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584 <span id="581">581</span>
585 <span id="582">582</span>
586 <span id="583">583</span>
587 <span id="584">584</span>
588 <span id="585">585</span>
589 <span id="586">586</span>
590 <span id="587">587</span>
591 <span id="588">588</span>
592 <span id="589">589</span>
593 <span id="590">590</span>
594 <span id="591">591</span>
595 <span id="592">592</span>
596 <span id="593">593</span>
597 <span id="594">594</span>
598 <span id="595">595</span>
599 <span id="596">596</span>
600 <span id="597">597</span>
601 <span id="598">598</span>
602 <span id="599">599</span>
603 <span id="600">600</span>
604 <span id="601">601</span>
605 <span id="602">602</span>
606 <span id="603">603</span>
607 <span id="604">604</span>
608 <span id="605">605</span>
609 <span id="606">606</span>
610 <span id="607">607</span>
611 <span id="608">608</span>
612 <span id="609">609</span>
613 <span id="610">610</span>
614 <span id="611">611</span>
615 <span id="612">612</span>
616 <span id="613">613</span>
617 <span id="614">614</span>
618 <span id="615">615</span>
619 <span id="616">616</span>
620 <span id="617">617</span>
621 <span id="618">618</span>
622 <span id="619">619</span>
623 <span id="620">620</span>
624 <span id="621">621</span>
625 <span id="622">622</span>
626 <span id="623">623</span>
627 <span id="624">624</span>
628 <span id="625">625</span>
629 <span id="626">626</span>
630 <span id="627">627</span>
631 <span id="628">628</span>
632 <span id="629">629</span>
633 <span id="630">630</span>
634 <span id="631">631</span>
635 <span id="632">632</span>
636 <span id="633">633</span>
637 <span id="634">634</span>
638 <span id="635">635</span>
639 <span id="636">636</span>
640 <span id="637">637</span>
641 <span id="638">638</span>
642 <span id="639">639</span>
643 <span id="640">640</span>
644 <span id="641">641</span>
645 <span id="642">642</span>
646 <span id="643">643</span>
647 <span id="644">644</span>
648 <span id="645">645</span>
649 <span id="646">646</span>
650 <span id="647">647</span>
651 <span id="648">648</span>
652 <span id="649">649</span>
653 <span id="650">650</span>
654 <span id="651">651</span>
655 <span id="652">652</span>
656 <span id="653">653</span>
657 <span id="654">654</span>
658 <span id="655">655</span>
659 <span id="656">656</span>
660 <span id="657">657</span>
661 <span id="658">658</span>
662 <span id="659">659</span>
663 <span id="660">660</span>
664 <span id="661">661</span>
665 <span id="662">662</span>
666 <span id="663">663</span>
667 <span id="664">664</span>
668 <span id="665">665</span>
669 <span id="666">666</span>
670 <span id="667">667</span>
671 <span id="668">668</span>
672 <span id="669">669</span>
673 <span id="670">670</span>
674 <span id="671">671</span>
675 <span id="672">672</span>
676 <span id="673">673</span>
677 <span id="674">674</span>
678 <span id="675">675</span>
679 <span id="676">676</span>
680 <span id="677">677</span>
681 <span id="678">678</span>
682 <span id="679">679</span>
683 <span id="680">680</span>
684 <span id="681">681</span>
685 <span id="682">682</span>
686 <span id="683">683</span>
687 <span id="684">684</span>
688 <span id="685">685</span>
689 <span id="686">686</span>
690 <span id="687">687</span>
691 <span id="688">688</span>
692 <span id="689">689</span>
693 <span id="690">690</span>
694 <span id="691">691</span>
695 <span id="692">692</span>
696 <span id="693">693</span>
697 <span id="694">694</span>
698 <span id="695">695</span>
699 <span id="696">696</span>
700 <span id="697">697</span>
701 <span id="698">698</span>
702 <span id="699">699</span>
703 <span id="700">700</span>
704 <span id="701">701</span>
705 <span id="702">702</span>
706 <span id="703">703</span>
707 <span id="704">704</span>
708 <span id="705">705</span>
709 <span id="706">706</span>
710 <span id="707">707</span>
711 <span id="708">708</span>
712 <span id="709">709</span>
713 <span id="710">710</span>
714 <span id="711">711</span>
715 <span id="712">712</span>
716 <span id="713">713</span>
717 <span id="714">714</span>
718 <span id="715">715</span>
719 <span id="716">716</span>
720 <span id="717">717</span>
721 <span id="718">718</span>
722 <span id="719">719</span>
723 <span id="720">720</span>
724 <span id="721">721</span>
725 <span id="722">722</span>
726 <span id="723">723</span>
727 <span id="724">724</span>
728 <span id="725">725</span>
729 <span id="726">726</span>
730 <span id="727">727</span>
731 <span id="728">728</span>
732 <span id="729">729</span>
733 <span id="730">730</span>
734 <span id="731">731</span>
735 <span id="732">732</span>
736 <span id="733">733</span>
737 <span id="734">734</span>
738 <span id="735">735</span>
739 <span id="736">736</span>
740 <span id="737">737</span>
741 <span id="738">738</span>
742 <span id="739">739</span>
743 <span id="740">740</span>
744 <span id="741">741</span>
745 <span id="742">742</span>
746 <span id="743">743</span>
747 <span id="744">744</span>
748 <span id="745">745</span>
749 <span id="746">746</span>
750 <span id="747">747</span>
751 <span id="748">748</span>
752 <span id="749">749</span>
753 <span id="750">750</span>
754 <span id="751">751</span>
755 <span id="752">752</span>
756 <span id="753">753</span>
757 <span id="754">754</span>
758 <span id="755">755</span>
759 <span id="756">756</span>
760 <span id="757">757</span>
761 <span id="758">758</span>
762 <span id="759">759</span>
763 <span id="760">760</span>
764 <span id="761">761</span>
765 <span id="762">762</span>
766 <span id="763">763</span>
767 <span id="764">764</span>
768 <span id="765">765</span>
769 <span id="766">766</span>
770 <span id="767">767</span>
771 <span id="768">768</span>
772 <span id="769">769</span>
773 <span id="770">770</span>
774 <span id="771">771</span>
775 <span id="772">772</span>
776 <span id="773">773</span>
777 <span id="774">774</span>
778 <span id="775">775</span>
779 <span id="776">776</span>
780 <span id="777">777</span>
781 <span id="778">778</span>
782 <span id="779">779</span>
783 <span id="780">780</span>
784 <span id="781">781</span>
785 <span id="782">782</span>
786 <span id="783">783</span>
787 <span id="784">784</span>
788 <span id="785">785</span>
789 <span id="786">786</span>
790 <span id="787">787</span>
791 <span id="788">788</span>
792 <span id="789">789</span>
793 <span id="790">790</span>
794 <span id="791">791</span>
795 <span id="792">792</span>
796 <span id="793">793</span>
797 <span id="794">794</span>
798 <span id="795">795</span>
799 <span id="796">796</span>
800 <span id="797">797</span>
801 <span id="798">798</span>
802 <span id="799">799</span>
803 <span id="800">800</span>
804 <span id="801">801</span>
805 <span id="802">802</span>
806 <span id="803">803</span>
807 <span id="804">804</span>
808 <span id="805">805</span>
809 <span id="806">806</span>
810 <span id="807">807</span>
811 <span id="808">808</span>
812 <span id="809">809</span>
813 <span id="810">810</span>
814 <span id="811">811</span>
815 <span id="812">812</span>
816 <span id="813">813</span>
817 <span id="814">814</span>
818 <span id="815">815</span>
819 <span id="816">816</span>
820 <span id="817">817</span>
821 <span id="818">818</span>
822 <span id="819">819</span>
823 <span id="820">820</span>
824 <span id="821">821</span>
825 <span id="822">822</span>
826 <span id="823">823</span>
827 <span id="824">824</span>
828 <span id="825">825</span>
829 <span id="826">826</span>
830 <span id="827">827</span>
831 <span id="828">828</span>
832 <span id="829">829</span>
833 <span id="830">830</span>
834 <span id="831">831</span>
835 <span id="832">832</span>
836 <span id="833">833</span>
837 <span id="834">834</span>
838 <span id="835">835</span>
839 <span id="836">836</span>
840 <span id="837">837</span>
841 <span id="838">838</span>
842 <span id="839">839</span>
843 <span id="840">840</span>
844 <span id="841">841</span>
845 <span id="842">842</span>
846 <span id="843">843</span>
847 <span id="844">844</span>
848 <span id="845">845</span>
849 <span id="846">846</span>
850 <span id="847">847</span>
851 <span id="848">848</span>
852 <span id="849">849</span>
853 <span id="850">850</span>
854 <span id="851">851</span>
855 <span id="852">852</span>
856 <span id="853">853</span>
857 <span id="854">854</span>
858 <span id="855">855</span>
859 <span id="856">856</span>
860 <span id="857">857</span>
861 <span id="858">858</span>
862 <span id="859">859</span>
863 <span id="860">860</span>
864 <span id="861">861</span>
865 <span id="862">862</span>
866 <span id="863">863</span>
867 <span id="864">864</span>
868 <span id="865">865</span>
869 <span id="866">866</span>
870 <span id="867">867</span>
871 <span id="868">868</span>
872 <span id="869">869</span>
873 <span id="870">870</span>
874 <span id="871">871</span>
875 <span id="872">872</span>
876 <span id="873">873</span>
877 <span id="874">874</span>
878 <span id="875">875</span>
879 <span id="876">876</span>
880 <span id="877">877</span>
881 <span id="878">878</span>
882 <span id="879">879</span>
883 <span id="880">880</span>
884 <span id="881">881</span>
885 <span id="882">882</span>
886 <span id="883">883</span>
887 <span id="884">884</span>
888 <span id="885">885</span>
889 <span id="886">886</span>
890 <span id="887">887</span>
891 <span id="888">888</span>
892 <span id="889">889</span>
893 <span id="890">890</span>
894 <span id="891">891</span>
895 <span id="892">892</span>
896 <span id="893">893</span>
897 <span id="894">894</span>
898 <span id="895">895</span>
899 <span id="896">896</span>
900 <span id="897">897</span>
901 <span id="898">898</span>
902 <span id="899">899</span>
903 <span id="900">900</span>
904 <span id="901">901</span>
905 <span id="902">902</span>
906 <span id="903">903</span>
907 <span id="904">904</span>
908 </pre><div class="example-wrap"><pre class="rust ">
909 <span class="comment">// Magical Bitcoin Library</span>
910 <span class="comment">// Written in 2020 by</span>
911 <span class="comment">// Alekos Filini <alekos.filini@gmail.com></span>
912 <span class="comment">//</span>
913 <span class="comment">// Copyright (c) 2020 Magical Bitcoin</span>
914 <span class="comment">//</span>
915 <span class="comment">// Permission is hereby granted, free of charge, to any person obtaining a copy</span>
916 <span class="comment">// of this software and associated documentation files (the "Software"), to deal</span>
917 <span class="comment">// in the Software without restriction, including without limitation the rights</span>
918 <span class="comment">// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell</span>
919 <span class="comment">// copies of the Software, and to permit persons to whom the Software is</span>
920 <span class="comment">// furnished to do so, subject to the following conditions:</span>
921 <span class="comment">//</span>
922 <span class="comment">// The above copyright notice and this permission notice shall be included in all</span>
923 <span class="comment">// copies or substantial portions of the Software.</span>
924 <span class="comment">//</span>
925 <span class="comment">// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR</span>
926 <span class="comment">// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,</span>
927 <span class="comment">// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE</span>
928 <span class="comment">// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER</span>
929 <span class="comment">// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,</span>
930 <span class="comment">// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE</span>
931 <span class="comment">// SOFTWARE.</span>
933 <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">convert</span>::<span class="ident">TryInto</span>;
934 <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">fmt</span>;
935 <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">io</span>::{<span class="ident">Read</span>, <span class="ident">Write</span>};
936 <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">marker</span>::<span class="ident">PhantomData</span>;
937 <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">ops</span>::<span class="ident">Deref</span>;
938 <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">sync</span>::<span class="ident">Arc</span>;
939 <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">sync</span>::<span class="ident">RwLock</span>;
941 <span class="kw">use</span> <span class="ident">rand</span>::<span class="ident">distributions</span>::<span class="ident">Alphanumeric</span>;
942 <span class="kw">use</span> <span class="ident">rand</span>::{<span class="ident">thread_rng</span>, <span class="ident">Rng</span>};
944 <span class="kw">use</span> <span class="ident">rocksdb</span>::{<span class="ident">Direction</span>, <span class="ident">IteratorMode</span>, <span class="ident">ReadOptions</span>, <span class="ident">WriteBatch</span>, <span class="ident">DB</span>};
946 <span class="kw">use</span> <span class="ident">bitcoin</span>::<span class="ident">consensus</span>::{<span class="ident">deserialize</span>, <span class="ident">encode</span>::<span class="ident">VarInt</span>, <span class="ident">serialize</span>, <span class="ident">Decodable</span>, <span class="ident">Encodable</span>};
947 <span class="kw">use</span> <span class="ident">bitcoin</span>::<span class="ident">hash_types</span>::<span class="ident">FilterHash</span>;
948 <span class="kw">use</span> <span class="ident">bitcoin</span>::<span class="ident">hashes</span>::<span class="ident">hex</span>::<span class="ident">FromHex</span>;
949 <span class="kw">use</span> <span class="ident">bitcoin</span>::<span class="ident">hashes</span>::{<span class="ident">sha256d</span>, <span class="ident">Hash</span>};
950 <span class="kw">use</span> <span class="ident">bitcoin</span>::<span class="ident">util</span>::<span class="ident">bip158</span>::<span class="ident">BlockFilter</span>;
951 <span class="kw">use</span> <span class="ident">bitcoin</span>::<span class="ident">util</span>::<span class="ident">uint</span>::<span class="ident">Uint256</span>;
952 <span class="kw">use</span> <span class="ident">bitcoin</span>::<span class="ident">Block</span>;
953 <span class="kw">use</span> <span class="ident">bitcoin</span>::<span class="ident">BlockHash</span>;
954 <span class="kw">use</span> <span class="ident">bitcoin</span>::<span class="ident">BlockHeader</span>;
955 <span class="kw">use</span> <span class="ident">bitcoin</span>::<span class="ident">Network</span>;
957 <span class="kw">use</span> <span class="kw">super</span>::<span class="ident">CompactFiltersError</span>;
959 <span class="macro">lazy_static</span><span class="macro">!</span> {
960 <span class="kw">static</span> <span class="kw-2">ref</span> <span class="ident">MAINNET_GENESIS</span>: <span class="ident">Block</span> <span class="op">=</span> <span class="ident">deserialize</span>(<span class="kw-2">&</span><span class="ident">Vec</span>::<span class="op"><</span><span class="ident">u8</span><span class="op">></span>::<span class="ident">from_hex</span>(<span class="string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span>).<span class="ident">unwrap</span>()).<span class="ident">unwrap</span>();
961 <span class="kw">static</span> <span class="kw-2">ref</span> <span class="ident">TESTNET_GENESIS</span>: <span class="ident">Block</span> <span class="op">=</span> <span class="ident">deserialize</span>(<span class="kw-2">&</span><span class="ident">Vec</span>::<span class="op"><</span><span class="ident">u8</span><span class="op">></span>::<span class="ident">from_hex</span>(<span class="string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span>).<span class="ident">unwrap</span>()).<span class="ident">unwrap</span>();
962 <span class="kw">static</span> <span class="kw-2">ref</span> <span class="ident">REGTEST_GENESIS</span>: <span class="ident">Block</span> <span class="op">=</span> <span class="ident">deserialize</span>(<span class="kw-2">&</span><span class="ident">Vec</span>::<span class="op"><</span><span class="ident">u8</span><span class="op">></span>::<span class="ident">from_hex</span>(<span class="string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span>).<span class="ident">unwrap</span>()).<span class="ident">unwrap</span>();
965 <span class="kw">pub</span> <span class="kw">trait</span> <span class="ident">StoreType</span>: <span class="ident">Default</span> <span class="op">+</span> <span class="ident">fmt</span>::<span class="ident">Debug</span> {}
967 <span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Default</span>, <span class="ident">Debug</span>)]</span>
968 <span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">Full</span>;
969 <span class="kw">impl</span> <span class="ident">StoreType</span> <span class="kw">for</span> <span class="ident">Full</span> {}
970 <span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Default</span>, <span class="ident">Debug</span>)]</span>
971 <span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">Snapshot</span>;
972 <span class="kw">impl</span> <span class="ident">StoreType</span> <span class="kw">for</span> <span class="ident">Snapshot</span> {}
974 <span class="kw">pub</span> <span class="kw">enum</span> <span class="ident">StoreEntry</span> {
975 <span class="ident">BlockHeader</span>(<span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">usize</span><span class="op">></span>),
976 <span class="ident">Block</span>(<span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">usize</span><span class="op">></span>),
977 <span class="ident">BlockHeaderIndex</span>(<span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">BlockHash</span><span class="op">></span>),
978 <span class="ident">CFilterTable</span>((<span class="ident">u8</span>, <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">usize</span><span class="op">></span>)),
981 <span class="kw">impl</span> <span class="ident">StoreEntry</span> {
982 <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_prefix</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="ident">Vec</span><span class="op"><</span><span class="ident">u8</span><span class="op">></span> {
983 <span class="kw">match</span> <span class="self">self</span> {
984 <span class="ident">StoreEntry</span>::<span class="ident">BlockHeader</span>(<span class="kw">_</span>) <span class="op">=</span><span class="op">></span> <span class="string">b"z"</span>,
985 <span class="ident">StoreEntry</span>::<span class="ident">Block</span>(<span class="kw">_</span>) <span class="op">=</span><span class="op">></span> <span class="string">b"x"</span>,
986 <span class="ident">StoreEntry</span>::<span class="ident">BlockHeaderIndex</span>(<span class="kw">_</span>) <span class="op">=</span><span class="op">></span> <span class="string">b"i"</span>,
987 <span class="ident">StoreEntry</span>::<span class="ident">CFilterTable</span>(<span class="kw">_</span>) <span class="op">=</span><span class="op">></span> <span class="string">b"t"</span>,
989 .<span class="ident">to_vec</span>()
992 <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_key</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="ident">Vec</span><span class="op"><</span><span class="ident">u8</span><span class="op">></span> {
993 <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">prefix</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">get_prefix</span>();
994 <span class="kw">match</span> <span class="self">self</span> {
995 <span class="ident">StoreEntry</span>::<span class="ident">BlockHeader</span>(<span class="prelude-val">Some</span>(<span class="ident">height</span>)) <span class="op">=</span><span class="op">></span> {
996 <span class="ident">prefix</span>.<span class="ident">extend_from_slice</span>(<span class="kw-2">&</span><span class="ident">height</span>.<span class="ident">to_be_bytes</span>())
998 <span class="ident">StoreEntry</span>::<span class="ident">Block</span>(<span class="prelude-val">Some</span>(<span class="ident">height</span>)) <span class="op">=</span><span class="op">></span> <span class="ident">prefix</span>.<span class="ident">extend_from_slice</span>(<span class="kw-2">&</span><span class="ident">height</span>.<span class="ident">to_be_bytes</span>()),
999 <span class="ident">StoreEntry</span>::<span class="ident">BlockHeaderIndex</span>(<span class="prelude-val">Some</span>(<span class="ident">hash</span>)) <span class="op">=</span><span class="op">></span> {
1000 <span class="ident">prefix</span>.<span class="ident">extend_from_slice</span>(<span class="kw-2">&</span><span class="ident">hash</span>.<span class="ident">into_inner</span>())
1002 <span class="ident">StoreEntry</span>::<span class="ident">CFilterTable</span>((<span class="ident">filter_type</span>, <span class="ident">bundle_index</span>)) <span class="op">=</span><span class="op">></span> {
1003 <span class="ident">prefix</span>.<span class="ident">push</span>(<span class="kw-2">*</span><span class="ident">filter_type</span>);
1004 <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">bundle_index</span>) <span class="op">=</span> <span class="ident">bundle_index</span> {
1005 <span class="ident">prefix</span>.<span class="ident">extend_from_slice</span>(<span class="kw-2">&</span><span class="ident">bundle_index</span>.<span class="ident">to_be_bytes</span>());
1008 <span class="kw">_</span> <span class="op">=</span><span class="op">></span> {}
1011 <span class="ident">prefix</span>
1015 <span class="kw">pub</span> <span class="kw">trait</span> <span class="ident">SerializeDb</span>: <span class="ident">Sized</span> {
1016 <span class="kw">fn</span> <span class="ident">serialize</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="ident">Vec</span><span class="op"><</span><span class="ident">u8</span><span class="op">></span>;
1017 <span class="kw">fn</span> <span class="ident">deserialize</span>(<span class="ident">data</span>: <span class="kw-2">&</span>[<span class="ident">u8</span>]) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="self">Self</span>, <span class="ident">CompactFiltersError</span><span class="op">></span>;
1020 <span class="kw">impl</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> <span class="ident">SerializeDb</span> <span class="kw">for</span> <span class="ident">T</span>
1021 <span class="kw">where</span>
1022 <span class="ident">T</span>: <span class="ident">Encodable</span> <span class="op">+</span> <span class="ident">Decodable</span>,
1024 <span class="kw">fn</span> <span class="ident">serialize</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="ident">Vec</span><span class="op"><</span><span class="ident">u8</span><span class="op">></span> {
1025 <span class="ident">serialize</span>(<span class="self">self</span>)
1028 <span class="kw">fn</span> <span class="ident">deserialize</span>(<span class="ident">data</span>: <span class="kw-2">&</span>[<span class="ident">u8</span>]) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="self">Self</span>, <span class="ident">CompactFiltersError</span><span class="op">></span> {
1029 <span class="prelude-val">Ok</span>(<span class="ident">deserialize</span>(<span class="ident">data</span>).<span class="ident">map_err</span>(<span class="op">|</span><span class="kw">_</span><span class="op">|</span> <span class="ident">CompactFiltersError</span>::<span class="ident">DataCorruption</span>)<span class="question-mark">?</span>)
1033 <span class="kw">impl</span> <span class="ident">Encodable</span> <span class="kw">for</span> <span class="ident">FilterHeader</span> {
1034 <span class="kw">fn</span> <span class="ident">consensus_encode</span><span class="op"><</span><span class="ident">W</span>: <span class="ident">Write</span><span class="op">></span>(
1035 <span class="kw-2">&</span><span class="self">self</span>,
1036 <span class="kw-2">mut</span> <span class="ident">e</span>: <span class="ident">W</span>,
1037 ) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">usize</span>, <span class="ident">bitcoin</span>::<span class="ident">consensus</span>::<span class="ident">encode</span>::<span class="ident">Error</span><span class="op">></span> {
1038 <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">written</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">prev_header_hash</span>.<span class="ident">consensus_encode</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">e</span>)<span class="question-mark">?</span>;
1039 <span class="ident">written</span> <span class="op">+</span><span class="op">=</span> <span class="self">self</span>.<span class="ident">filter_hash</span>.<span class="ident">consensus_encode</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">e</span>)<span class="question-mark">?</span>;
1040 <span class="prelude-val">Ok</span>(<span class="ident">written</span>)
1044 <span class="kw">impl</span> <span class="ident">Decodable</span> <span class="kw">for</span> <span class="ident">FilterHeader</span> {
1045 <span class="kw">fn</span> <span class="ident">consensus_decode</span><span class="op"><</span><span class="ident">D</span>: <span class="ident">Read</span><span class="op">></span>(<span class="kw-2">mut</span> <span class="ident">d</span>: <span class="ident">D</span>) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="self">Self</span>, <span class="ident">bitcoin</span>::<span class="ident">consensus</span>::<span class="ident">encode</span>::<span class="ident">Error</span><span class="op">></span> {
1046 <span class="kw">let</span> <span class="ident">prev_header_hash</span> <span class="op">=</span> <span class="ident">FilterHeaderHash</span>::<span class="ident">consensus_decode</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">d</span>)<span class="question-mark">?</span>;
1047 <span class="kw">let</span> <span class="ident">filter_hash</span> <span class="op">=</span> <span class="ident">FilterHash</span>::<span class="ident">consensus_decode</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">d</span>)<span class="question-mark">?</span>;
1049 <span class="prelude-val">Ok</span>(<span class="ident">FilterHeader</span> {
1050 <span class="ident">prev_header_hash</span>,
1051 <span class="ident">filter_hash</span>,
1056 <span class="kw">impl</span> <span class="ident">Encodable</span> <span class="kw">for</span> <span class="ident">BundleStatus</span> {
1057 <span class="kw">fn</span> <span class="ident">consensus_encode</span><span class="op"><</span><span class="ident">W</span>: <span class="ident">Write</span><span class="op">></span>(
1058 <span class="kw-2">&</span><span class="self">self</span>,
1059 <span class="kw-2">mut</span> <span class="ident">e</span>: <span class="ident">W</span>,
1060 ) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">usize</span>, <span class="ident">bitcoin</span>::<span class="ident">consensus</span>::<span class="ident">encode</span>::<span class="ident">Error</span><span class="op">></span> {
1061 <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">written</span> <span class="op">=</span> <span class="number">0</span>;
1063 <span class="kw">match</span> <span class="self">self</span> {
1064 <span class="ident">BundleStatus</span>::<span class="ident">Init</span> <span class="op">=</span><span class="op">></span> {
1065 <span class="ident">written</span> <span class="op">+</span><span class="op">=</span> <span class="number">0x00u8</span>.<span class="ident">consensus_encode</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">e</span>)<span class="question-mark">?</span>;
1067 <span class="ident">BundleStatus</span>::<span class="ident">CFHeaders</span> { <span class="ident">cf_headers</span> } <span class="op">=</span><span class="op">></span> {
1068 <span class="ident">written</span> <span class="op">+</span><span class="op">=</span> <span class="number">0x01u8</span>.<span class="ident">consensus_encode</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">e</span>)<span class="question-mark">?</span>;
1069 <span class="ident">written</span> <span class="op">+</span><span class="op">=</span> <span class="ident">VarInt</span>(<span class="ident">cf_headers</span>.<span class="ident">len</span>() <span class="kw">as</span> <span class="ident">u64</span>).<span class="ident">consensus_encode</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">e</span>)<span class="question-mark">?</span>;
1070 <span class="kw">for</span> <span class="ident">header</span> <span class="kw">in</span> <span class="ident">cf_headers</span> {
1071 <span class="ident">written</span> <span class="op">+</span><span class="op">=</span> <span class="ident">header</span>.<span class="ident">consensus_encode</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">e</span>)<span class="question-mark">?</span>;
1074 <span class="ident">BundleStatus</span>::<span class="ident">CFilters</span> { <span class="ident">cf_filters</span> } <span class="op">=</span><span class="op">></span> {
1075 <span class="ident">written</span> <span class="op">+</span><span class="op">=</span> <span class="number">0x02u8</span>.<span class="ident">consensus_encode</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">e</span>)<span class="question-mark">?</span>;
1076 <span class="ident">written</span> <span class="op">+</span><span class="op">=</span> <span class="ident">VarInt</span>(<span class="ident">cf_filters</span>.<span class="ident">len</span>() <span class="kw">as</span> <span class="ident">u64</span>).<span class="ident">consensus_encode</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">e</span>)<span class="question-mark">?</span>;
1077 <span class="kw">for</span> <span class="ident">filter</span> <span class="kw">in</span> <span class="ident">cf_filters</span> {
1078 <span class="ident">written</span> <span class="op">+</span><span class="op">=</span> <span class="ident">filter</span>.<span class="ident">consensus_encode</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">e</span>)<span class="question-mark">?</span>;
1081 <span class="ident">BundleStatus</span>::<span class="ident">Processed</span> { <span class="ident">cf_filters</span> } <span class="op">=</span><span class="op">></span> {
1082 <span class="ident">written</span> <span class="op">+</span><span class="op">=</span> <span class="number">0x03u8</span>.<span class="ident">consensus_encode</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">e</span>)<span class="question-mark">?</span>;
1083 <span class="ident">written</span> <span class="op">+</span><span class="op">=</span> <span class="ident">VarInt</span>(<span class="ident">cf_filters</span>.<span class="ident">len</span>() <span class="kw">as</span> <span class="ident">u64</span>).<span class="ident">consensus_encode</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">e</span>)<span class="question-mark">?</span>;
1084 <span class="kw">for</span> <span class="ident">filter</span> <span class="kw">in</span> <span class="ident">cf_filters</span> {
1085 <span class="ident">written</span> <span class="op">+</span><span class="op">=</span> <span class="ident">filter</span>.<span class="ident">consensus_encode</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">e</span>)<span class="question-mark">?</span>;
1088 <span class="ident">BundleStatus</span>::<span class="ident">Pruned</span> <span class="op">=</span><span class="op">></span> {
1089 <span class="ident">written</span> <span class="op">+</span><span class="op">=</span> <span class="number">0x04u8</span>.<span class="ident">consensus_encode</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">e</span>)<span class="question-mark">?</span>;
1091 <span class="ident">BundleStatus</span>::<span class="ident">Tip</span> { <span class="ident">cf_filters</span> } <span class="op">=</span><span class="op">></span> {
1092 <span class="ident">written</span> <span class="op">+</span><span class="op">=</span> <span class="number">0x05u8</span>.<span class="ident">consensus_encode</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">e</span>)<span class="question-mark">?</span>;
1093 <span class="ident">written</span> <span class="op">+</span><span class="op">=</span> <span class="ident">VarInt</span>(<span class="ident">cf_filters</span>.<span class="ident">len</span>() <span class="kw">as</span> <span class="ident">u64</span>).<span class="ident">consensus_encode</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">e</span>)<span class="question-mark">?</span>;
1094 <span class="kw">for</span> <span class="ident">filter</span> <span class="kw">in</span> <span class="ident">cf_filters</span> {
1095 <span class="ident">written</span> <span class="op">+</span><span class="op">=</span> <span class="ident">filter</span>.<span class="ident">consensus_encode</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">e</span>)<span class="question-mark">?</span>;
1100 <span class="prelude-val">Ok</span>(<span class="ident">written</span>)
1104 <span class="kw">impl</span> <span class="ident">Decodable</span> <span class="kw">for</span> <span class="ident">BundleStatus</span> {
1105 <span class="kw">fn</span> <span class="ident">consensus_decode</span><span class="op"><</span><span class="ident">D</span>: <span class="ident">Read</span><span class="op">></span>(<span class="kw-2">mut</span> <span class="ident">d</span>: <span class="ident">D</span>) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="self">Self</span>, <span class="ident">bitcoin</span>::<span class="ident">consensus</span>::<span class="ident">encode</span>::<span class="ident">Error</span><span class="op">></span> {
1106 <span class="kw">let</span> <span class="ident">byte_type</span> <span class="op">=</span> <span class="ident">u8</span>::<span class="ident">consensus_decode</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">d</span>)<span class="question-mark">?</span>;
1107 <span class="kw">match</span> <span class="ident">byte_type</span> {
1108 <span class="number">0x00</span> <span class="op">=</span><span class="op">></span> <span class="prelude-val">Ok</span>(<span class="ident">BundleStatus</span>::<span class="ident">Init</span>),
1109 <span class="number">0x01</span> <span class="op">=</span><span class="op">></span> {
1110 <span class="kw">let</span> <span class="ident">num</span> <span class="op">=</span> <span class="ident">VarInt</span>::<span class="ident">consensus_decode</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">d</span>)<span class="question-mark">?</span>;
1111 <span class="kw">let</span> <span class="ident">num</span> <span class="op">=</span> <span class="ident">num</span>.<span class="number">0</span> <span class="kw">as</span> <span class="ident">usize</span>;
1113 <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">cf_headers</span> <span class="op">=</span> <span class="ident">Vec</span>::<span class="ident">with_capacity</span>(<span class="ident">num</span>);
1114 <span class="kw">for</span> <span class="kw">_</span> <span class="kw">in</span> <span class="number">0</span>..<span class="ident">num</span> {
1115 <span class="ident">cf_headers</span>.<span class="ident">push</span>(<span class="ident">FilterHeader</span>::<span class="ident">consensus_decode</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">d</span>)<span class="question-mark">?</span>);
1118 <span class="prelude-val">Ok</span>(<span class="ident">BundleStatus</span>::<span class="ident">CFHeaders</span> { <span class="ident">cf_headers</span> })
1120 <span class="number">0x02</span> <span class="op">=</span><span class="op">></span> {
1121 <span class="kw">let</span> <span class="ident">num</span> <span class="op">=</span> <span class="ident">VarInt</span>::<span class="ident">consensus_decode</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">d</span>)<span class="question-mark">?</span>;
1122 <span class="kw">let</span> <span class="ident">num</span> <span class="op">=</span> <span class="ident">num</span>.<span class="number">0</span> <span class="kw">as</span> <span class="ident">usize</span>;
1124 <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">cf_filters</span> <span class="op">=</span> <span class="ident">Vec</span>::<span class="ident">with_capacity</span>(<span class="ident">num</span>);
1125 <span class="kw">for</span> <span class="kw">_</span> <span class="kw">in</span> <span class="number">0</span>..<span class="ident">num</span> {
1126 <span class="ident">cf_filters</span>.<span class="ident">push</span>(<span class="ident">Vec</span>::<span class="op"><</span><span class="ident">u8</span><span class="op">></span>::<span class="ident">consensus_decode</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">d</span>)<span class="question-mark">?</span>);
1129 <span class="prelude-val">Ok</span>(<span class="ident">BundleStatus</span>::<span class="ident">CFilters</span> { <span class="ident">cf_filters</span> })
1131 <span class="number">0x03</span> <span class="op">=</span><span class="op">></span> {
1132 <span class="kw">let</span> <span class="ident">num</span> <span class="op">=</span> <span class="ident">VarInt</span>::<span class="ident">consensus_decode</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">d</span>)<span class="question-mark">?</span>;
1133 <span class="kw">let</span> <span class="ident">num</span> <span class="op">=</span> <span class="ident">num</span>.<span class="number">0</span> <span class="kw">as</span> <span class="ident">usize</span>;
1135 <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">cf_filters</span> <span class="op">=</span> <span class="ident">Vec</span>::<span class="ident">with_capacity</span>(<span class="ident">num</span>);
1136 <span class="kw">for</span> <span class="kw">_</span> <span class="kw">in</span> <span class="number">0</span>..<span class="ident">num</span> {
1137 <span class="ident">cf_filters</span>.<span class="ident">push</span>(<span class="ident">Vec</span>::<span class="op"><</span><span class="ident">u8</span><span class="op">></span>::<span class="ident">consensus_decode</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">d</span>)<span class="question-mark">?</span>);
1140 <span class="prelude-val">Ok</span>(<span class="ident">BundleStatus</span>::<span class="ident">Processed</span> { <span class="ident">cf_filters</span> })
1142 <span class="number">0x04</span> <span class="op">=</span><span class="op">></span> <span class="prelude-val">Ok</span>(<span class="ident">BundleStatus</span>::<span class="ident">Pruned</span>),
1143 <span class="number">0x05</span> <span class="op">=</span><span class="op">></span> {
1144 <span class="kw">let</span> <span class="ident">num</span> <span class="op">=</span> <span class="ident">VarInt</span>::<span class="ident">consensus_decode</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">d</span>)<span class="question-mark">?</span>;
1145 <span class="kw">let</span> <span class="ident">num</span> <span class="op">=</span> <span class="ident">num</span>.<span class="number">0</span> <span class="kw">as</span> <span class="ident">usize</span>;
1147 <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">cf_filters</span> <span class="op">=</span> <span class="ident">Vec</span>::<span class="ident">with_capacity</span>(<span class="ident">num</span>);
1148 <span class="kw">for</span> <span class="kw">_</span> <span class="kw">in</span> <span class="number">0</span>..<span class="ident">num</span> {
1149 <span class="ident">cf_filters</span>.<span class="ident">push</span>(<span class="ident">Vec</span>::<span class="op"><</span><span class="ident">u8</span><span class="op">></span>::<span class="ident">consensus_decode</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">d</span>)<span class="question-mark">?</span>);
1152 <span class="prelude-val">Ok</span>(<span class="ident">BundleStatus</span>::<span class="ident">Tip</span> { <span class="ident">cf_filters</span> })
1154 <span class="kw">_</span> <span class="op">=</span><span class="op">></span> <span class="prelude-val">Err</span>(<span class="ident">bitcoin</span>::<span class="ident">consensus</span>::<span class="ident">encode</span>::<span class="ident">Error</span>::<span class="ident">ParseFailed</span>(
1155 <span class="string">"Invalid byte type"</span>,
1161 <span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">ChainStore</span><span class="op"><</span><span class="ident">T</span>: <span class="ident">StoreType</span><span class="op">></span> {
1162 <span class="ident">store</span>: <span class="ident">Arc</span><span class="op"><</span><span class="ident">RwLock</span><span class="op"><</span><span class="ident">DB</span><span class="op">></span><span class="op">></span>,
1163 <span class="ident">cf_name</span>: <span class="ident">String</span>,
1164 <span class="ident">min_height</span>: <span class="ident">usize</span>,
1165 <span class="ident">network</span>: <span class="ident">Network</span>,
1166 <span class="ident">phantom</span>: <span class="ident">PhantomData</span><span class="op"><</span><span class="ident">T</span><span class="op">></span>,
1169 <span class="kw">impl</span> <span class="ident">ChainStore</span><span class="op"><</span><span class="ident">Full</span><span class="op">></span> {
1170 <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">new</span>(<span class="ident">store</span>: <span class="ident">DB</span>, <span class="ident">network</span>: <span class="ident">Network</span>) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="self">Self</span>, <span class="ident">CompactFiltersError</span><span class="op">></span> {
1171 <span class="kw">let</span> <span class="ident">genesis</span> <span class="op">=</span> <span class="kw">match</span> <span class="ident">network</span> {
1172 <span class="ident">Network</span>::<span class="ident">Bitcoin</span> <span class="op">=</span><span class="op">></span> <span class="ident">MAINNET_GENESIS</span>.<span class="ident">deref</span>(),
1173 <span class="ident">Network</span>::<span class="ident">Testnet</span> <span class="op">=</span><span class="op">></span> <span class="ident">TESTNET_GENESIS</span>.<span class="ident">deref</span>(),
1174 <span class="ident">Network</span>::<span class="ident">Regtest</span> <span class="op">=</span><span class="op">></span> <span class="ident">REGTEST_GENESIS</span>.<span class="ident">deref</span>(),
1177 <span class="kw">let</span> <span class="ident">cf_name</span> <span class="op">=</span> <span class="string">"default"</span>.<span class="ident">to_string</span>();
1178 <span class="kw">let</span> <span class="ident">cf_handle</span> <span class="op">=</span> <span class="ident">store</span>.<span class="ident">cf_handle</span>(<span class="kw-2">&</span><span class="ident">cf_name</span>).<span class="ident">unwrap</span>();
1180 <span class="kw">let</span> <span class="ident">genesis_key</span> <span class="op">=</span> <span class="ident">StoreEntry</span>::<span class="ident">BlockHeader</span>(<span class="prelude-val">Some</span>(<span class="number">0</span>)).<span class="ident">get_key</span>();
1182 <span class="kw">if</span> <span class="ident">store</span>.<span class="ident">get_pinned_cf</span>(<span class="ident">cf_handle</span>, <span class="kw-2">&</span><span class="ident">genesis_key</span>)<span class="question-mark">?</span>.<span class="ident">is_none</span>() {
1183 <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">batch</span> <span class="op">=</span> <span class="ident">WriteBatch</span>::<span class="ident">default</span>();
1184 <span class="ident">batch</span>.<span class="ident">put_cf</span>(
1185 <span class="ident">cf_handle</span>,
1186 <span class="ident">genesis_key</span>,
1187 (<span class="ident">genesis</span>.<span class="ident">header</span>, <span class="ident">genesis</span>.<span class="ident">header</span>.<span class="ident">work</span>()).<span class="ident">serialize</span>(),
1189 <span class="ident">batch</span>.<span class="ident">put_cf</span>(
1190 <span class="ident">cf_handle</span>,
1191 <span class="ident">StoreEntry</span>::<span class="ident">BlockHeaderIndex</span>(<span class="prelude-val">Some</span>(<span class="ident">genesis</span>.<span class="ident">block_hash</span>())).<span class="ident">get_key</span>(),
1192 <span class="kw-2">&</span><span class="number">0usize</span>.<span class="ident">to_be_bytes</span>(),
1194 <span class="ident">store</span>.<span class="ident">write</span>(<span class="ident">batch</span>)<span class="question-mark">?</span>;
1197 <span class="prelude-val">Ok</span>(<span class="ident">ChainStore</span> {
1198 <span class="ident">store</span>: <span class="ident">Arc</span>::<span class="ident">new</span>(<span class="ident">RwLock</span>::<span class="ident">new</span>(<span class="ident">store</span>)),
1199 <span class="ident">cf_name</span>,
1200 <span class="ident">min_height</span>: <span class="number">0</span>,
1201 <span class="ident">network</span>,
1202 <span class="ident">phantom</span>: <span class="ident">PhantomData</span>,
1206 <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_locators</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">Vec</span><span class="op"><</span>(<span class="ident">BlockHash</span>, <span class="ident">usize</span>)<span class="op">></span>, <span class="ident">CompactFiltersError</span><span class="op">></span> {
1207 <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">step</span> <span class="op">=</span> <span class="number">1</span>;
1208 <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">index</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">get_height</span>()<span class="question-mark">?</span>;
1209 <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">answer</span> <span class="op">=</span> <span class="ident">Vec</span>::<span class="ident">new</span>();
1211 <span class="kw">let</span> <span class="ident">store_read</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">store</span>.<span class="ident">read</span>().<span class="ident">unwrap</span>();
1212 <span class="kw">let</span> <span class="ident">cf_handle</span> <span class="op">=</span> <span class="ident">store_read</span>.<span class="ident">cf_handle</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">cf_name</span>).<span class="ident">unwrap</span>();
1214 <span class="kw">loop</span> {
1215 <span class="kw">if</span> <span class="ident">answer</span>.<span class="ident">len</span>() <span class="op">></span> <span class="number">10</span> {
1216 <span class="ident">step</span> <span class="kw-2">*</span><span class="op">=</span> <span class="number">2</span>;
1219 <span class="kw">let</span> (<span class="ident">header</span>, <span class="kw">_</span>): (<span class="ident">BlockHeader</span>, <span class="ident">Uint256</span>) <span class="op">=</span> <span class="ident">SerializeDb</span>::<span class="ident">deserialize</span>(
1220 <span class="kw-2">&</span><span class="ident">store_read</span>
1221 .<span class="ident">get_pinned_cf</span>(<span class="ident">cf_handle</span>, <span class="ident">StoreEntry</span>::<span class="ident">BlockHeader</span>(<span class="prelude-val">Some</span>(<span class="ident">index</span>)).<span class="ident">get_key</span>())<span class="question-mark">?</span>
1222 .<span class="ident">unwrap</span>(),
1223 )<span class="question-mark">?</span>;
1224 <span class="ident">answer</span>.<span class="ident">push</span>((<span class="ident">header</span>.<span class="ident">block_hash</span>(), <span class="ident">index</span>));
1226 <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">new_index</span>) <span class="op">=</span> <span class="ident">index</span>.<span class="ident">checked_sub</span>(<span class="ident">step</span>) {
1227 <span class="ident">index</span> <span class="op">=</span> <span class="ident">new_index</span>;
1228 } <span class="kw">else</span> {
1229 <span class="kw">break</span>;
1233 <span class="prelude-val">Ok</span>(<span class="ident">answer</span>)
1236 <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">start_snapshot</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">from</span>: <span class="ident">usize</span>) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">ChainStore</span><span class="op"><</span><span class="ident">Snapshot</span><span class="op">></span>, <span class="ident">CompactFiltersError</span><span class="op">></span> {
1237 <span class="kw">let</span> <span class="ident">new_cf_name</span>: <span class="ident">String</span> <span class="op">=</span> <span class="ident">thread_rng</span>().<span class="ident">sample_iter</span>(<span class="kw-2">&</span><span class="ident">Alphanumeric</span>).<span class="ident">take</span>(<span class="number">16</span>).<span class="ident">collect</span>();
1238 <span class="kw">let</span> <span class="ident">new_cf_name</span> <span class="op">=</span> <span class="macro">format</span><span class="macro">!</span>(<span class="string">"_headers:{}"</span>, <span class="ident">new_cf_name</span>);
1240 <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">write_store</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">store</span>.<span class="ident">write</span>().<span class="ident">unwrap</span>();
1242 <span class="ident">write_store</span>.<span class="ident">create_cf</span>(<span class="kw-2">&</span><span class="ident">new_cf_name</span>, <span class="kw-2">&</span><span class="ident">Default</span>::<span class="ident">default</span>())<span class="question-mark">?</span>;
1244 <span class="kw">let</span> <span class="ident">cf_handle</span> <span class="op">=</span> <span class="ident">write_store</span>.<span class="ident">cf_handle</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">cf_name</span>).<span class="ident">unwrap</span>();
1245 <span class="kw">let</span> <span class="ident">new_cf_handle</span> <span class="op">=</span> <span class="ident">write_store</span>.<span class="ident">cf_handle</span>(<span class="kw-2">&</span><span class="ident">new_cf_name</span>).<span class="ident">unwrap</span>();
1247 <span class="kw">let</span> (<span class="ident">header</span>, <span class="ident">work</span>): (<span class="ident">BlockHeader</span>, <span class="ident">Uint256</span>) <span class="op">=</span> <span class="ident">SerializeDb</span>::<span class="ident">deserialize</span>(
1248 <span class="kw-2">&</span><span class="ident">write_store</span>
1249 .<span class="ident">get_pinned_cf</span>(<span class="ident">cf_handle</span>, <span class="ident">StoreEntry</span>::<span class="ident">BlockHeader</span>(<span class="prelude-val">Some</span>(<span class="ident">from</span>)).<span class="ident">get_key</span>())<span class="question-mark">?</span>
1250 .<span class="ident">ok_or</span>(<span class="ident">CompactFiltersError</span>::<span class="ident">DataCorruption</span>)<span class="question-mark">?</span>,
1251 )<span class="question-mark">?</span>;
1253 <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">batch</span> <span class="op">=</span> <span class="ident">WriteBatch</span>::<span class="ident">default</span>();
1254 <span class="ident">batch</span>.<span class="ident">put_cf</span>(
1255 <span class="ident">new_cf_handle</span>,
1256 <span class="ident">StoreEntry</span>::<span class="ident">BlockHeaderIndex</span>(<span class="prelude-val">Some</span>(<span class="ident">header</span>.<span class="ident">block_hash</span>())).<span class="ident">get_key</span>(),
1257 <span class="kw-2">&</span><span class="ident">from</span>.<span class="ident">to_be_bytes</span>(),
1259 <span class="ident">batch</span>.<span class="ident">put_cf</span>(
1260 <span class="ident">new_cf_handle</span>,
1261 <span class="ident">StoreEntry</span>::<span class="ident">BlockHeader</span>(<span class="prelude-val">Some</span>(<span class="ident">from</span>)).<span class="ident">get_key</span>(),
1262 (<span class="ident">header</span>, <span class="ident">work</span>).<span class="ident">serialize</span>(),
1264 <span class="ident">write_store</span>.<span class="ident">write</span>(<span class="ident">batch</span>)<span class="question-mark">?</span>;
1266 <span class="kw">let</span> <span class="ident">store</span> <span class="op">=</span> <span class="ident">Arc</span>::<span class="ident">clone</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">store</span>);
1267 <span class="prelude-val">Ok</span>(<span class="ident">ChainStore</span> {
1268 <span class="ident">store</span>,
1269 <span class="ident">cf_name</span>: <span class="ident">new_cf_name</span>,
1270 <span class="ident">min_height</span>: <span class="ident">from</span>,
1271 <span class="ident">network</span>: <span class="self">self</span>.<span class="ident">network</span>,
1272 <span class="ident">phantom</span>: <span class="ident">PhantomData</span>,
1276 <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">recover_snapshot</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">cf_name</span>: <span class="kw-2">&</span><span class="ident">str</span>) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Result</span><span class="op"><</span>(), <span class="ident">CompactFiltersError</span><span class="op">></span> {
1277 <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">write_store</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">store</span>.<span class="ident">write</span>().<span class="ident">unwrap</span>();
1278 <span class="kw">let</span> <span class="ident">snapshot_cf_handle</span> <span class="op">=</span> <span class="ident">write_store</span>.<span class="ident">cf_handle</span>(<span class="ident">cf_name</span>).<span class="ident">unwrap</span>();
1280 <span class="kw">let</span> <span class="ident">prefix</span> <span class="op">=</span> <span class="ident">StoreEntry</span>::<span class="ident">BlockHeader</span>(<span class="prelude-val">None</span>).<span class="ident">get_key</span>();
1281 <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">iterator</span> <span class="op">=</span> <span class="ident">write_store</span>.<span class="ident">prefix_iterator_cf</span>(<span class="ident">snapshot_cf_handle</span>, <span class="ident">prefix</span>);
1283 <span class="kw">let</span> <span class="ident">min_height</span> <span class="op">=</span> <span class="kw">match</span> <span class="ident">iterator</span>
1284 .<span class="ident">next</span>()
1285 .<span class="ident">and_then</span>(<span class="op">|</span>(<span class="ident">k</span>, <span class="kw">_</span>)<span class="op">|</span> <span class="ident">k</span>[<span class="number">1</span>..].<span class="ident">try_into</span>().<span class="ident">ok</span>())
1286 .<span class="ident">map</span>(<span class="op">|</span><span class="ident">bytes</span><span class="op">|</span> <span class="ident">usize</span>::<span class="ident">from_be_bytes</span>(<span class="ident">bytes</span>))
1288 <span class="prelude-val">None</span> <span class="op">=</span><span class="op">></span> {
1289 <span class="ident">std</span>::<span class="ident">mem</span>::<span class="ident">drop</span>(<span class="ident">iterator</span>);
1290 <span class="ident">write_store</span>.<span class="ident">drop_cf</span>(<span class="ident">cf_name</span>).<span class="ident">ok</span>();
1292 <span class="kw">return</span> <span class="prelude-val">Ok</span>(());
1294 <span class="prelude-val">Some</span>(<span class="ident">x</span>) <span class="op">=</span><span class="op">></span> <span class="ident">x</span>,
1296 <span class="ident">std</span>::<span class="ident">mem</span>::<span class="ident">drop</span>(<span class="ident">iterator</span>);
1297 <span class="ident">std</span>::<span class="ident">mem</span>::<span class="ident">drop</span>(<span class="ident">write_store</span>);
1299 <span class="kw">let</span> <span class="ident">snapshot</span> <span class="op">=</span> <span class="ident">ChainStore</span> {
1300 <span class="ident">store</span>: <span class="ident">Arc</span>::<span class="ident">clone</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">store</span>),
1301 <span class="ident">cf_name</span>: <span class="ident">cf_name</span>.<span class="ident">into</span>(),
1302 <span class="ident">min_height</span>,
1303 <span class="ident">network</span>: <span class="self">self</span>.<span class="ident">network</span>,
1304 <span class="ident">phantom</span>: <span class="ident">PhantomData</span>,
1306 <span class="kw">if</span> <span class="ident">snapshot</span>.<span class="ident">work</span>()<span class="question-mark">?</span> <span class="op">></span> <span class="self">self</span>.<span class="ident">work</span>()<span class="question-mark">?</span> {
1307 <span class="self">self</span>.<span class="ident">apply_snapshot</span>(<span class="ident">snapshot</span>)<span class="question-mark">?</span>;
1310 <span class="prelude-val">Ok</span>(())
1313 <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">apply_snapshot</span>(
1314 <span class="kw-2">&</span><span class="self">self</span>,
1315 <span class="ident">snaphost</span>: <span class="ident">ChainStore</span><span class="op"><</span><span class="ident">Snapshot</span><span class="op">></span>,
1316 ) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Result</span><span class="op"><</span>(), <span class="ident">CompactFiltersError</span><span class="op">></span> {
1317 <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">batch</span> <span class="op">=</span> <span class="ident">WriteBatch</span>::<span class="ident">default</span>();
1319 <span class="kw">let</span> <span class="ident">read_store</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">store</span>.<span class="ident">read</span>().<span class="ident">unwrap</span>();
1320 <span class="kw">let</span> <span class="ident">cf_handle</span> <span class="op">=</span> <span class="ident">read_store</span>.<span class="ident">cf_handle</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">cf_name</span>).<span class="ident">unwrap</span>();
1321 <span class="kw">let</span> <span class="ident">snapshot_cf_handle</span> <span class="op">=</span> <span class="ident">read_store</span>.<span class="ident">cf_handle</span>(<span class="kw-2">&</span><span class="ident">snaphost</span>.<span class="ident">cf_name</span>).<span class="ident">unwrap</span>();
1323 <span class="kw">let</span> <span class="ident">from_key</span> <span class="op">=</span> <span class="ident">StoreEntry</span>::<span class="ident">BlockHeader</span>(<span class="prelude-val">Some</span>(<span class="ident">snaphost</span>.<span class="ident">min_height</span>)).<span class="ident">get_key</span>();
1324 <span class="kw">let</span> <span class="ident">to_key</span> <span class="op">=</span> <span class="ident">StoreEntry</span>::<span class="ident">BlockHeader</span>(<span class="prelude-val">Some</span>(<span class="ident">usize</span>::<span class="ident">MAX</span>)).<span class="ident">get_key</span>();
1326 <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">opts</span> <span class="op">=</span> <span class="ident">ReadOptions</span>::<span class="ident">default</span>();
1327 <span class="ident">opts</span>.<span class="ident">set_iterate_upper_bound</span>(<span class="ident">to_key</span>.<span class="ident">clone</span>());
1329 <span class="ident">log</span>::<span class="macro">debug</span><span class="macro">!</span>(<span class="string">"Removing items"</span>);
1330 <span class="ident">batch</span>.<span class="ident">delete_range_cf</span>(<span class="ident">cf_handle</span>, <span class="kw-2">&</span><span class="ident">from_key</span>, <span class="kw-2">&</span><span class="ident">to_key</span>);
1331 <span class="kw">for</span> (<span class="kw">_</span>, <span class="ident">v</span>) <span class="kw">in</span> <span class="ident">read_store</span>.<span class="ident">iterator_cf_opt</span>(
1332 <span class="ident">cf_handle</span>,
1333 <span class="ident">opts</span>,
1334 <span class="ident">IteratorMode</span>::<span class="ident">From</span>(<span class="kw-2">&</span><span class="ident">from_key</span>, <span class="ident">Direction</span>::<span class="ident">Forward</span>),
1336 <span class="kw">let</span> (<span class="ident">header</span>, <span class="kw">_</span>): (<span class="ident">BlockHeader</span>, <span class="ident">Uint256</span>) <span class="op">=</span> <span class="ident">SerializeDb</span>::<span class="ident">deserialize</span>(<span class="kw-2">&</span><span class="ident">v</span>)<span class="question-mark">?</span>;
1338 <span class="ident">batch</span>.<span class="ident">delete_cf</span>(
1339 <span class="ident">cf_handle</span>,
1340 <span class="ident">StoreEntry</span>::<span class="ident">BlockHeaderIndex</span>(<span class="prelude-val">Some</span>(<span class="ident">header</span>.<span class="ident">block_hash</span>())).<span class="ident">get_key</span>(),
1344 <span class="comment">// Delete full blocks overriden by snapshot</span>
1345 <span class="kw">let</span> <span class="ident">from_key</span> <span class="op">=</span> <span class="ident">StoreEntry</span>::<span class="ident">Block</span>(<span class="prelude-val">Some</span>(<span class="ident">snaphost</span>.<span class="ident">min_height</span>)).<span class="ident">get_key</span>();
1346 <span class="kw">let</span> <span class="ident">to_key</span> <span class="op">=</span> <span class="ident">StoreEntry</span>::<span class="ident">Block</span>(<span class="prelude-val">Some</span>(<span class="ident">usize</span>::<span class="ident">MAX</span>)).<span class="ident">get_key</span>();
1347 <span class="ident">batch</span>.<span class="ident">delete_range</span>(<span class="kw-2">&</span><span class="ident">from_key</span>, <span class="kw-2">&</span><span class="ident">to_key</span>);
1349 <span class="ident">log</span>::<span class="macro">debug</span><span class="macro">!</span>(<span class="string">"Copying over new items"</span>);
1350 <span class="kw">for</span> (<span class="ident">k</span>, <span class="ident">v</span>) <span class="kw">in</span> <span class="ident">read_store</span>.<span class="ident">iterator_cf</span>(<span class="ident">snapshot_cf_handle</span>, <span class="ident">IteratorMode</span>::<span class="ident">Start</span>) {
1351 <span class="ident">batch</span>.<span class="ident">put_cf</span>(<span class="ident">cf_handle</span>, <span class="ident">k</span>, <span class="ident">v</span>);
1354 <span class="ident">read_store</span>.<span class="ident">write</span>(<span class="ident">batch</span>)<span class="question-mark">?</span>;
1356 <span class="ident">std</span>::<span class="ident">mem</span>::<span class="ident">drop</span>(<span class="ident">snapshot_cf_handle</span>);
1357 <span class="ident">std</span>::<span class="ident">mem</span>::<span class="ident">drop</span>(<span class="ident">cf_handle</span>);
1358 <span class="ident">std</span>::<span class="ident">mem</span>::<span class="ident">drop</span>(<span class="ident">read_store</span>);
1360 <span class="self">self</span>.<span class="ident">store</span>.<span class="ident">write</span>().<span class="ident">unwrap</span>().<span class="ident">drop_cf</span>(<span class="kw-2">&</span><span class="ident">snaphost</span>.<span class="ident">cf_name</span>)<span class="question-mark">?</span>;
1362 <span class="prelude-val">Ok</span>(())
1365 <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_height_for</span>(
1366 <span class="kw-2">&</span><span class="self">self</span>,
1367 <span class="ident">block_hash</span>: <span class="kw-2">&</span><span class="ident">BlockHash</span>,
1368 ) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">usize</span><span class="op">></span>, <span class="ident">CompactFiltersError</span><span class="op">></span> {
1369 <span class="kw">let</span> <span class="ident">read_store</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">store</span>.<span class="ident">read</span>().<span class="ident">unwrap</span>();
1370 <span class="kw">let</span> <span class="ident">cf_handle</span> <span class="op">=</span> <span class="ident">read_store</span>.<span class="ident">cf_handle</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">cf_name</span>).<span class="ident">unwrap</span>();
1372 <span class="kw">let</span> <span class="ident">key</span> <span class="op">=</span> <span class="ident">StoreEntry</span>::<span class="ident">BlockHeaderIndex</span>(<span class="prelude-val">Some</span>(<span class="ident">block_hash</span>.<span class="ident">clone</span>())).<span class="ident">get_key</span>();
1373 <span class="kw">let</span> <span class="ident">data</span> <span class="op">=</span> <span class="ident">read_store</span>.<span class="ident">get_pinned_cf</span>(<span class="ident">cf_handle</span>, <span class="ident">key</span>)<span class="question-mark">?</span>;
1374 <span class="prelude-val">Ok</span>(<span class="ident">data</span>
1375 .<span class="ident">map</span>(<span class="op">|</span><span class="ident">data</span><span class="op">|</span> {
1376 <span class="prelude-val">Ok</span>::<span class="op"><</span><span class="kw">_</span>, <span class="ident">CompactFiltersError</span><span class="op">></span>(<span class="ident">usize</span>::<span class="ident">from_be_bytes</span>(
1377 <span class="ident">data</span>.<span class="ident">as_ref</span>()
1378 .<span class="ident">try_into</span>()
1379 .<span class="ident">map_err</span>(<span class="op">|</span><span class="kw">_</span><span class="op">|</span> <span class="ident">CompactFiltersError</span>::<span class="ident">DataCorruption</span>)<span class="question-mark">?</span>,
1382 .<span class="ident">transpose</span>()<span class="question-mark">?</span>)
1385 <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_block_hash</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">height</span>: <span class="ident">usize</span>) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">BlockHash</span><span class="op">></span>, <span class="ident">CompactFiltersError</span><span class="op">></span> {
1386 <span class="kw">let</span> <span class="ident">read_store</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">store</span>.<span class="ident">read</span>().<span class="ident">unwrap</span>();
1387 <span class="kw">let</span> <span class="ident">cf_handle</span> <span class="op">=</span> <span class="ident">read_store</span>.<span class="ident">cf_handle</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">cf_name</span>).<span class="ident">unwrap</span>();
1389 <span class="kw">let</span> <span class="ident">key</span> <span class="op">=</span> <span class="ident">StoreEntry</span>::<span class="ident">BlockHeader</span>(<span class="prelude-val">Some</span>(<span class="ident">height</span>)).<span class="ident">get_key</span>();
1390 <span class="kw">let</span> <span class="ident">data</span> <span class="op">=</span> <span class="ident">read_store</span>.<span class="ident">get_pinned_cf</span>(<span class="ident">cf_handle</span>, <span class="ident">key</span>)<span class="question-mark">?</span>;
1391 <span class="prelude-val">Ok</span>(<span class="ident">data</span>
1392 .<span class="ident">map</span>(<span class="op">|</span><span class="ident">data</span><span class="op">|</span> {
1393 <span class="kw">let</span> (<span class="ident">header</span>, <span class="kw">_</span>): (<span class="ident">BlockHeader</span>, <span class="ident">Uint256</span>) <span class="op">=</span>
1394 <span class="ident">deserialize</span>(<span class="kw-2">&</span><span class="ident">data</span>).<span class="ident">map_err</span>(<span class="op">|</span><span class="kw">_</span><span class="op">|</span> <span class="ident">CompactFiltersError</span>::<span class="ident">DataCorruption</span>)<span class="question-mark">?</span>;
1395 <span class="prelude-val">Ok</span>::<span class="op"><</span><span class="kw">_</span>, <span class="ident">CompactFiltersError</span><span class="op">></span>(<span class="ident">header</span>.<span class="ident">block_hash</span>())
1397 .<span class="ident">transpose</span>()<span class="question-mark">?</span>)
1400 <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">save_full_block</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">block</span>: <span class="kw-2">&</span><span class="ident">Block</span>, <span class="ident">height</span>: <span class="ident">usize</span>) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Result</span><span class="op"><</span>(), <span class="ident">CompactFiltersError</span><span class="op">></span> {
1401 <span class="kw">let</span> <span class="ident">key</span> <span class="op">=</span> <span class="ident">StoreEntry</span>::<span class="ident">Block</span>(<span class="prelude-val">Some</span>(<span class="ident">height</span>)).<span class="ident">get_key</span>();
1402 <span class="self">self</span>.<span class="ident">store</span>.<span class="ident">read</span>().<span class="ident">unwrap</span>().<span class="ident">put</span>(<span class="ident">key</span>, <span class="ident">block</span>.<span class="ident">serialize</span>())<span class="question-mark">?</span>;
1404 <span class="prelude-val">Ok</span>(())
1407 <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_full_block</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">height</span>: <span class="ident">usize</span>) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">Block</span><span class="op">></span>, <span class="ident">CompactFiltersError</span><span class="op">></span> {
1408 <span class="kw">let</span> <span class="ident">read_store</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">store</span>.<span class="ident">read</span>().<span class="ident">unwrap</span>();
1410 <span class="kw">let</span> <span class="ident">key</span> <span class="op">=</span> <span class="ident">StoreEntry</span>::<span class="ident">Block</span>(<span class="prelude-val">Some</span>(<span class="ident">height</span>)).<span class="ident">get_key</span>();
1411 <span class="kw">let</span> <span class="ident">opt_block</span> <span class="op">=</span> <span class="ident">read_store</span>.<span class="ident">get_pinned</span>(<span class="ident">key</span>)<span class="question-mark">?</span>;
1413 <span class="prelude-val">Ok</span>(<span class="ident">opt_block</span>
1414 .<span class="ident">map</span>(<span class="op">|</span><span class="ident">data</span><span class="op">|</span> <span class="ident">deserialize</span>(<span class="kw-2">&</span><span class="ident">data</span>))
1415 .<span class="ident">transpose</span>()
1416 .<span class="ident">map_err</span>(<span class="op">|</span><span class="kw">_</span><span class="op">|</span> <span class="ident">CompactFiltersError</span>::<span class="ident">DataCorruption</span>)<span class="question-mark">?</span>)
1419 <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">delete_blocks_until</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">height</span>: <span class="ident">usize</span>) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Result</span><span class="op"><</span>(), <span class="ident">CompactFiltersError</span><span class="op">></span> {
1420 <span class="kw">let</span> <span class="ident">from_key</span> <span class="op">=</span> <span class="ident">StoreEntry</span>::<span class="ident">Block</span>(<span class="prelude-val">Some</span>(<span class="number">0</span>)).<span class="ident">get_key</span>();
1421 <span class="kw">let</span> <span class="ident">to_key</span> <span class="op">=</span> <span class="ident">StoreEntry</span>::<span class="ident">Block</span>(<span class="prelude-val">Some</span>(<span class="ident">height</span>)).<span class="ident">get_key</span>();
1423 <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">batch</span> <span class="op">=</span> <span class="ident">WriteBatch</span>::<span class="ident">default</span>();
1424 <span class="ident">batch</span>.<span class="ident">delete_range</span>(<span class="kw-2">&</span><span class="ident">from_key</span>, <span class="kw-2">&</span><span class="ident">to_key</span>);
1426 <span class="self">self</span>.<span class="ident">store</span>.<span class="ident">read</span>().<span class="ident">unwrap</span>().<span class="ident">write</span>(<span class="ident">batch</span>)<span class="question-mark">?</span>;
1428 <span class="prelude-val">Ok</span>(())
1431 <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">iter_full_blocks</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">Vec</span><span class="op"><</span>(<span class="ident">usize</span>, <span class="ident">Block</span>)<span class="op">></span>, <span class="ident">CompactFiltersError</span><span class="op">></span> {
1432 <span class="kw">let</span> <span class="ident">read_store</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">store</span>.<span class="ident">read</span>().<span class="ident">unwrap</span>();
1434 <span class="kw">let</span> <span class="ident">prefix</span> <span class="op">=</span> <span class="ident">StoreEntry</span>::<span class="ident">Block</span>(<span class="prelude-val">None</span>).<span class="ident">get_key</span>();
1436 <span class="kw">let</span> <span class="ident">iterator</span> <span class="op">=</span> <span class="ident">read_store</span>.<span class="ident">prefix_iterator</span>(<span class="kw-2">&</span><span class="ident">prefix</span>);
1437 <span class="comment">// FIXME: we have to filter manually because rocksdb sometimes returns stuff that doesn't</span>
1438 <span class="comment">// have the right prefix</span>
1439 <span class="ident">iterator</span>
1440 .<span class="ident">filter</span>(<span class="op">|</span>(<span class="ident">k</span>, <span class="kw">_</span>)<span class="op">|</span> <span class="ident">k</span>.<span class="ident">starts_with</span>(<span class="kw-2">&</span><span class="ident">prefix</span>))
1441 .<span class="ident">map</span>(<span class="op">|</span>(<span class="ident">k</span>, <span class="ident">v</span>)<span class="op">|</span> {
1442 <span class="kw">let</span> <span class="ident">height</span>: <span class="ident">usize</span> <span class="op">=</span> <span class="ident">usize</span>::<span class="ident">from_be_bytes</span>(
1443 <span class="ident">k</span>[<span class="number">1</span>..]
1444 .<span class="ident">try_into</span>()
1445 .<span class="ident">map_err</span>(<span class="op">|</span><span class="kw">_</span><span class="op">|</span> <span class="ident">CompactFiltersError</span>::<span class="ident">DataCorruption</span>)<span class="question-mark">?</span>,
1447 <span class="kw">let</span> <span class="ident">block</span> <span class="op">=</span> <span class="ident">SerializeDb</span>::<span class="ident">deserialize</span>(<span class="kw-2">&</span><span class="ident">v</span>)<span class="question-mark">?</span>;
1449 <span class="prelude-val">Ok</span>((<span class="ident">height</span>, <span class="ident">block</span>))
1451 .<span class="ident">collect</span>::<span class="op"><</span><span class="prelude-ty">Result</span><span class="op"><</span><span class="kw">_</span>, <span class="kw">_</span><span class="op">></span><span class="op">></span>()
1455 <span class="kw">impl</span><span class="op"><</span><span class="ident">T</span>: <span class="ident">StoreType</span><span class="op">></span> <span class="ident">ChainStore</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> {
1456 <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">work</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">Uint256</span>, <span class="ident">CompactFiltersError</span><span class="op">></span> {
1457 <span class="kw">let</span> <span class="ident">read_store</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">store</span>.<span class="ident">read</span>().<span class="ident">unwrap</span>();
1458 <span class="kw">let</span> <span class="ident">cf_handle</span> <span class="op">=</span> <span class="ident">read_store</span>.<span class="ident">cf_handle</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">cf_name</span>).<span class="ident">unwrap</span>();
1460 <span class="kw">let</span> <span class="ident">prefix</span> <span class="op">=</span> <span class="ident">StoreEntry</span>::<span class="ident">BlockHeader</span>(<span class="prelude-val">None</span>).<span class="ident">get_key</span>();
1461 <span class="kw">let</span> <span class="ident">iterator</span> <span class="op">=</span> <span class="ident">read_store</span>.<span class="ident">prefix_iterator_cf</span>(<span class="ident">cf_handle</span>, <span class="ident">prefix</span>);
1463 <span class="prelude-val">Ok</span>(<span class="ident">iterator</span>
1464 .<span class="ident">last</span>()
1465 .<span class="ident">map</span>(<span class="op">|</span>(<span class="kw">_</span>, <span class="ident">v</span>)<span class="op">|</span> <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="kw">_</span>, <span class="ident">CompactFiltersError</span><span class="op">></span> {
1466 <span class="kw">let</span> (<span class="kw">_</span>, <span class="ident">work</span>): (<span class="ident">BlockHeader</span>, <span class="ident">Uint256</span>) <span class="op">=</span> <span class="ident">SerializeDb</span>::<span class="ident">deserialize</span>(<span class="kw-2">&</span><span class="ident">v</span>)<span class="question-mark">?</span>;
1468 <span class="prelude-val">Ok</span>(<span class="ident">work</span>)
1470 .<span class="ident">transpose</span>()<span class="question-mark">?</span>
1471 .<span class="ident">unwrap_or_default</span>())
1474 <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_height</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">usize</span>, <span class="ident">CompactFiltersError</span><span class="op">></span> {
1475 <span class="kw">let</span> <span class="ident">read_store</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">store</span>.<span class="ident">read</span>().<span class="ident">unwrap</span>();
1476 <span class="kw">let</span> <span class="ident">cf_handle</span> <span class="op">=</span> <span class="ident">read_store</span>.<span class="ident">cf_handle</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">cf_name</span>).<span class="ident">unwrap</span>();
1478 <span class="kw">let</span> <span class="ident">prefix</span> <span class="op">=</span> <span class="ident">StoreEntry</span>::<span class="ident">BlockHeader</span>(<span class="prelude-val">None</span>).<span class="ident">get_key</span>();
1479 <span class="kw">let</span> <span class="ident">iterator</span> <span class="op">=</span> <span class="ident">read_store</span>.<span class="ident">prefix_iterator_cf</span>(<span class="ident">cf_handle</span>, <span class="ident">prefix</span>);
1481 <span class="prelude-val">Ok</span>(<span class="ident">iterator</span>
1482 .<span class="ident">last</span>()
1483 .<span class="ident">map</span>(<span class="op">|</span>(<span class="ident">k</span>, <span class="kw">_</span>)<span class="op">|</span> <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="kw">_</span>, <span class="ident">CompactFiltersError</span><span class="op">></span> {
1484 <span class="kw">let</span> <span class="ident">height</span> <span class="op">=</span> <span class="ident">usize</span>::<span class="ident">from_be_bytes</span>(
1485 <span class="ident">k</span>[<span class="number">1</span>..]
1486 .<span class="ident">try_into</span>()
1487 .<span class="ident">map_err</span>(<span class="op">|</span><span class="kw">_</span><span class="op">|</span> <span class="ident">CompactFiltersError</span>::<span class="ident">DataCorruption</span>)<span class="question-mark">?</span>,
1490 <span class="prelude-val">Ok</span>(<span class="ident">height</span>)
1492 .<span class="ident">transpose</span>()<span class="question-mark">?</span>
1493 .<span class="ident">unwrap_or_default</span>())
1496 <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_tip_hash</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">BlockHash</span><span class="op">></span>, <span class="ident">CompactFiltersError</span><span class="op">></span> {
1497 <span class="kw">let</span> <span class="ident">read_store</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">store</span>.<span class="ident">read</span>().<span class="ident">unwrap</span>();
1498 <span class="kw">let</span> <span class="ident">cf_handle</span> <span class="op">=</span> <span class="ident">read_store</span>.<span class="ident">cf_handle</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">cf_name</span>).<span class="ident">unwrap</span>();
1500 <span class="kw">let</span> <span class="ident">prefix</span> <span class="op">=</span> <span class="ident">StoreEntry</span>::<span class="ident">BlockHeader</span>(<span class="prelude-val">None</span>).<span class="ident">get_key</span>();
1501 <span class="kw">let</span> <span class="ident">iterator</span> <span class="op">=</span> <span class="ident">read_store</span>.<span class="ident">prefix_iterator_cf</span>(<span class="ident">cf_handle</span>, <span class="ident">prefix</span>);
1503 <span class="prelude-val">Ok</span>(<span class="ident">iterator</span>
1504 .<span class="ident">last</span>()
1505 .<span class="ident">map</span>(<span class="op">|</span>(<span class="kw">_</span>, <span class="ident">v</span>)<span class="op">|</span> <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="kw">_</span>, <span class="ident">CompactFiltersError</span><span class="op">></span> {
1506 <span class="kw">let</span> (<span class="ident">header</span>, <span class="kw">_</span>): (<span class="ident">BlockHeader</span>, <span class="ident">Uint256</span>) <span class="op">=</span> <span class="ident">SerializeDb</span>::<span class="ident">deserialize</span>(<span class="kw-2">&</span><span class="ident">v</span>)<span class="question-mark">?</span>;
1508 <span class="prelude-val">Ok</span>(<span class="ident">header</span>.<span class="ident">block_hash</span>())
1510 .<span class="ident">transpose</span>()<span class="question-mark">?</span>)
1513 <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">apply</span>(
1514 <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>,
1515 <span class="ident">from</span>: <span class="ident">usize</span>,
1516 <span class="ident">headers</span>: <span class="ident">Vec</span><span class="op"><</span><span class="ident">BlockHeader</span><span class="op">></span>,
1517 ) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">BlockHash</span>, <span class="ident">CompactFiltersError</span><span class="op">></span> {
1518 <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">batch</span> <span class="op">=</span> <span class="ident">WriteBatch</span>::<span class="ident">default</span>();
1520 <span class="kw">let</span> <span class="ident">read_store</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">store</span>.<span class="ident">read</span>().<span class="ident">unwrap</span>();
1521 <span class="kw">let</span> <span class="ident">cf_handle</span> <span class="op">=</span> <span class="ident">read_store</span>.<span class="ident">cf_handle</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">cf_name</span>).<span class="ident">unwrap</span>();
1523 <span class="kw">let</span> (<span class="kw-2">mut</span> <span class="ident">last_hash</span>, <span class="kw-2">mut</span> <span class="ident">accumulated_work</span>) <span class="op">=</span> <span class="ident">read_store</span>
1524 .<span class="ident">get_pinned_cf</span>(<span class="ident">cf_handle</span>, <span class="ident">StoreEntry</span>::<span class="ident">BlockHeader</span>(<span class="prelude-val">Some</span>(<span class="ident">from</span>)).<span class="ident">get_key</span>())<span class="question-mark">?</span>
1525 .<span class="ident">map</span>(<span class="op">|</span><span class="ident">result</span><span class="op">|</span> {
1526 <span class="kw">let</span> (<span class="ident">header</span>, <span class="ident">work</span>): (<span class="ident">BlockHeader</span>, <span class="ident">Uint256</span>) <span class="op">=</span> <span class="ident">SerializeDb</span>::<span class="ident">deserialize</span>(<span class="kw-2">&</span><span class="ident">result</span>)<span class="question-mark">?</span>;
1527 <span class="prelude-val">Ok</span>::<span class="op"><</span><span class="kw">_</span>, <span class="ident">CompactFiltersError</span><span class="op">></span>((<span class="ident">header</span>.<span class="ident">block_hash</span>(), <span class="ident">work</span>))
1529 .<span class="ident">transpose</span>()<span class="question-mark">?</span>
1530 .<span class="ident">ok_or</span>(<span class="ident">CompactFiltersError</span>::<span class="ident">DataCorruption</span>)<span class="question-mark">?</span>;
1532 <span class="kw">for</span> (<span class="ident">index</span>, <span class="ident">header</span>) <span class="kw">in</span> <span class="ident">headers</span>.<span class="ident">into_iter</span>().<span class="ident">enumerate</span>() {
1533 <span class="kw">if</span> <span class="ident">header</span>.<span class="ident">prev_blockhash</span> <span class="op">!</span><span class="op">=</span> <span class="ident">last_hash</span> {
1534 <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="ident">CompactFiltersError</span>::<span class="ident">InvalidHeaders</span>);
1537 <span class="ident">last_hash</span> <span class="op">=</span> <span class="ident">header</span>.<span class="ident">block_hash</span>();
1538 <span class="ident">accumulated_work</span> <span class="op">=</span> <span class="ident">accumulated_work</span> <span class="op">+</span> <span class="ident">header</span>.<span class="ident">work</span>();
1540 <span class="kw">let</span> <span class="ident">height</span> <span class="op">=</span> <span class="ident">from</span> <span class="op">+</span> <span class="ident">index</span> <span class="op">+</span> <span class="number">1</span>;
1541 <span class="ident">batch</span>.<span class="ident">put_cf</span>(
1542 <span class="ident">cf_handle</span>,
1543 <span class="ident">StoreEntry</span>::<span class="ident">BlockHeaderIndex</span>(<span class="prelude-val">Some</span>(<span class="ident">header</span>.<span class="ident">block_hash</span>())).<span class="ident">get_key</span>(),
1544 <span class="kw-2">&</span>(<span class="ident">height</span>).<span class="ident">to_be_bytes</span>(),
1546 <span class="ident">batch</span>.<span class="ident">put_cf</span>(
1547 <span class="ident">cf_handle</span>,
1548 <span class="ident">StoreEntry</span>::<span class="ident">BlockHeader</span>(<span class="prelude-val">Some</span>(<span class="ident">height</span>)).<span class="ident">get_key</span>(),
1549 (<span class="ident">header</span>, <span class="ident">accumulated_work</span>).<span class="ident">serialize</span>(),
1553 <span class="ident">std</span>::<span class="ident">mem</span>::<span class="ident">drop</span>(<span class="ident">cf_handle</span>);
1554 <span class="ident">std</span>::<span class="ident">mem</span>::<span class="ident">drop</span>(<span class="ident">read_store</span>);
1556 <span class="self">self</span>.<span class="ident">store</span>.<span class="ident">write</span>().<span class="ident">unwrap</span>().<span class="ident">write</span>(<span class="ident">batch</span>)<span class="question-mark">?</span>;
1557 <span class="prelude-val">Ok</span>(<span class="ident">last_hash</span>)
1561 <span class="kw">impl</span><span class="op"><</span><span class="ident">T</span>: <span class="ident">StoreType</span><span class="op">></span> <span class="ident">fmt</span>::<span class="ident">Debug</span> <span class="kw">for</span> <span class="ident">ChainStore</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> {
1562 <span class="kw">fn</span> <span class="ident">fmt</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">f</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">fmt</span>::<span class="ident">Formatter</span><span class="op"><</span><span class="lifetime">'_</span><span class="op">></span>) <span class="op">-</span><span class="op">></span> <span class="ident">fmt</span>::<span class="prelude-ty">Result</span> {
1563 <span class="ident">f</span>.<span class="ident">debug_struct</span>(<span class="kw-2">&</span><span class="macro">format</span><span class="macro">!</span>(<span class="string">"ChainStore<{:?}>"</span>, <span class="ident">T</span>::<span class="ident">default</span>()))
1564 .<span class="ident">field</span>(<span class="string">"cf_name"</span>, <span class="kw-2">&</span><span class="self">self</span>.<span class="ident">cf_name</span>)
1565 .<span class="ident">field</span>(<span class="string">"min_height"</span>, <span class="kw-2">&</span><span class="self">self</span>.<span class="ident">min_height</span>)
1566 .<span class="ident">field</span>(<span class="string">"network"</span>, <span class="kw-2">&</span><span class="self">self</span>.<span class="ident">network</span>)
1567 .<span class="ident">field</span>(<span class="string">"headers_height"</span>, <span class="kw-2">&</span><span class="self">self</span>.<span class="ident">get_height</span>())
1568 .<span class="ident">field</span>(<span class="string">"tip_hash"</span>, <span class="kw-2">&</span><span class="self">self</span>.<span class="ident">get_tip_hash</span>())
1569 .<span class="ident">finish</span>()
1573 <span class="kw">pub</span> <span class="kw">type</span> <span class="ident">FilterHeaderHash</span> <span class="op">=</span> <span class="ident">FilterHash</span>;
1575 <span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Debug</span>, <span class="ident">Clone</span>)]</span>
1576 <span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">FilterHeader</span> {
1577 <span class="ident">prev_header_hash</span>: <span class="ident">FilterHeaderHash</span>,
1578 <span class="ident">filter_hash</span>: <span class="ident">FilterHash</span>,
1581 <span class="kw">impl</span> <span class="ident">FilterHeader</span> {
1582 <span class="kw">fn</span> <span class="ident">header_hash</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="ident">FilterHeaderHash</span> {
1583 <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">hash_data</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">filter_hash</span>.<span class="ident">into_inner</span>().<span class="ident">to_vec</span>();
1584 <span class="ident">hash_data</span>.<span class="ident">extend_from_slice</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">prev_header_hash</span>);
1585 <span class="ident">sha256d</span>::<span class="ident">Hash</span>::<span class="ident">hash</span>(<span class="kw-2">&</span><span class="ident">hash_data</span>).<span class="ident">into</span>()
1589 <span class="kw">pub</span> <span class="kw">enum</span> <span class="ident">BundleStatus</span> {
1590 <span class="ident">Init</span>,
1591 <span class="ident">CFHeaders</span> { <span class="ident">cf_headers</span>: <span class="ident">Vec</span><span class="op"><</span><span class="ident">FilterHeader</span><span class="op">></span> },
1592 <span class="ident">CFilters</span> { <span class="ident">cf_filters</span>: <span class="ident">Vec</span><span class="op"><</span><span class="ident">Vec</span><span class="op"><</span><span class="ident">u8</span><span class="op">></span><span class="op">></span> },
1593 <span class="ident">Processed</span> { <span class="ident">cf_filters</span>: <span class="ident">Vec</span><span class="op"><</span><span class="ident">Vec</span><span class="op"><</span><span class="ident">u8</span><span class="op">></span><span class="op">></span> },
1594 <span class="ident">Tip</span> { <span class="ident">cf_filters</span>: <span class="ident">Vec</span><span class="op"><</span><span class="ident">Vec</span><span class="op"><</span><span class="ident">u8</span><span class="op">></span><span class="op">></span> },
1595 <span class="ident">Pruned</span>,
1598 <span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">CFStore</span> {
1599 <span class="ident">store</span>: <span class="ident">Arc</span><span class="op"><</span><span class="ident">RwLock</span><span class="op"><</span><span class="ident">DB</span><span class="op">></span><span class="op">></span>,
1600 <span class="ident">filter_type</span>: <span class="ident">u8</span>,
1603 <span class="kw">type</span> <span class="ident">BundleEntry</span> <span class="op">=</span> (<span class="ident">BundleStatus</span>, <span class="ident">FilterHeaderHash</span>);
1605 <span class="kw">impl</span> <span class="ident">CFStore</span> {
1606 <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">new</span>(
1607 <span class="ident">headers_store</span>: <span class="kw-2">&</span><span class="ident">ChainStore</span><span class="op"><</span><span class="ident">Full</span><span class="op">></span>,
1608 <span class="ident">filter_type</span>: <span class="ident">u8</span>,
1609 ) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="self">Self</span>, <span class="ident">CompactFiltersError</span><span class="op">></span> {
1610 <span class="kw">let</span> <span class="ident">cf_store</span> <span class="op">=</span> <span class="ident">CFStore</span> {
1611 <span class="ident">store</span>: <span class="ident">Arc</span>::<span class="ident">clone</span>(<span class="kw-2">&</span><span class="ident">headers_store</span>.<span class="ident">store</span>),
1612 <span class="ident">filter_type</span>,
1615 <span class="kw">let</span> <span class="ident">genesis</span> <span class="op">=</span> <span class="kw">match</span> <span class="ident">headers_store</span>.<span class="ident">network</span> {
1616 <span class="ident">Network</span>::<span class="ident">Bitcoin</span> <span class="op">=</span><span class="op">></span> <span class="ident">MAINNET_GENESIS</span>.<span class="ident">deref</span>(),
1617 <span class="ident">Network</span>::<span class="ident">Testnet</span> <span class="op">=</span><span class="op">></span> <span class="ident">TESTNET_GENESIS</span>.<span class="ident">deref</span>(),
1618 <span class="ident">Network</span>::<span class="ident">Regtest</span> <span class="op">=</span><span class="op">></span> <span class="ident">REGTEST_GENESIS</span>.<span class="ident">deref</span>(),
1621 <span class="kw">let</span> <span class="ident">filter</span> <span class="op">=</span> <span class="ident">BlockFilter</span>::<span class="ident">new_script_filter</span>(<span class="ident">genesis</span>, <span class="op">|</span><span class="ident">utxo</span><span class="op">|</span> {
1622 <span class="prelude-val">Err</span>(<span class="ident">bitcoin</span>::<span class="ident">util</span>::<span class="ident">bip158</span>::<span class="ident">Error</span>::<span class="ident">UtxoMissing</span>(<span class="kw-2">*</span><span class="ident">utxo</span>))
1623 })<span class="question-mark">?</span>;
1624 <span class="kw">let</span> <span class="ident">first_key</span> <span class="op">=</span> <span class="ident">StoreEntry</span>::<span class="ident">CFilterTable</span>((<span class="ident">filter_type</span>, <span class="prelude-val">Some</span>(<span class="number">0</span>))).<span class="ident">get_key</span>();
1626 <span class="comment">// Add the genesis' filter</span>
1628 <span class="kw">let</span> <span class="ident">read_store</span> <span class="op">=</span> <span class="ident">cf_store</span>.<span class="ident">store</span>.<span class="ident">read</span>().<span class="ident">unwrap</span>();
1629 <span class="kw">if</span> <span class="ident">read_store</span>.<span class="ident">get_pinned</span>(<span class="kw-2">&</span><span class="ident">first_key</span>)<span class="question-mark">?</span>.<span class="ident">is_none</span>() {
1630 <span class="ident">read_store</span>.<span class="ident">put</span>(
1631 <span class="kw-2">&</span><span class="ident">first_key</span>,
1632 (<span class="ident">BundleStatus</span>::<span class="ident">Init</span>, <span class="ident">filter</span>.<span class="ident">filter_id</span>(<span class="kw-2">&</span><span class="ident">FilterHash</span>::<span class="ident">default</span>())).<span class="ident">serialize</span>(),
1633 )<span class="question-mark">?</span>;
1637 <span class="prelude-val">Ok</span>(<span class="ident">cf_store</span>)
1640 <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_filter_type</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="ident">u8</span> {
1641 <span class="self">self</span>.<span class="ident">filter_type</span>
1644 <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_bundles</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">Vec</span><span class="op"><</span><span class="ident">BundleEntry</span><span class="op">></span>, <span class="ident">CompactFiltersError</span><span class="op">></span> {
1645 <span class="kw">let</span> <span class="ident">read_store</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">store</span>.<span class="ident">read</span>().<span class="ident">unwrap</span>();
1647 <span class="kw">let</span> <span class="ident">prefix</span> <span class="op">=</span> <span class="ident">StoreEntry</span>::<span class="ident">CFilterTable</span>((<span class="self">self</span>.<span class="ident">filter_type</span>, <span class="prelude-val">None</span>)).<span class="ident">get_key</span>();
1648 <span class="kw">let</span> <span class="ident">iterator</span> <span class="op">=</span> <span class="ident">read_store</span>.<span class="ident">prefix_iterator</span>(<span class="kw-2">&</span><span class="ident">prefix</span>);
1650 <span class="comment">// FIXME: we have to filter manually because rocksdb sometimes returns stuff that doesn't</span>
1651 <span class="comment">// have the right prefix</span>
1652 <span class="ident">iterator</span>
1653 .<span class="ident">filter</span>(<span class="op">|</span>(<span class="ident">k</span>, <span class="kw">_</span>)<span class="op">|</span> <span class="ident">k</span>.<span class="ident">starts_with</span>(<span class="kw-2">&</span><span class="ident">prefix</span>))
1654 .<span class="ident">map</span>(<span class="op">|</span>(<span class="kw">_</span>, <span class="ident">data</span>)<span class="op">|</span> <span class="ident">BundleEntry</span>::<span class="ident">deserialize</span>(<span class="kw-2">&</span><span class="ident">data</span>))
1655 .<span class="ident">collect</span>::<span class="op"><</span><span class="prelude-ty">Result</span><span class="op"><</span><span class="kw">_</span>, <span class="kw">_</span><span class="op">></span><span class="op">></span>()
1658 <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_checkpoints</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">Vec</span><span class="op"><</span><span class="ident">FilterHash</span><span class="op">></span>, <span class="ident">CompactFiltersError</span><span class="op">></span> {
1659 <span class="kw">let</span> <span class="ident">read_store</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">store</span>.<span class="ident">read</span>().<span class="ident">unwrap</span>();
1661 <span class="kw">let</span> <span class="ident">prefix</span> <span class="op">=</span> <span class="ident">StoreEntry</span>::<span class="ident">CFilterTable</span>((<span class="self">self</span>.<span class="ident">filter_type</span>, <span class="prelude-val">None</span>)).<span class="ident">get_key</span>();
1662 <span class="kw">let</span> <span class="ident">iterator</span> <span class="op">=</span> <span class="ident">read_store</span>.<span class="ident">prefix_iterator</span>(<span class="kw-2">&</span><span class="ident">prefix</span>);
1664 <span class="comment">// FIXME: we have to filter manually because rocksdb sometimes returns stuff that doesn't</span>
1665 <span class="comment">// have the right prefix</span>
1666 <span class="prelude-val">Ok</span>(<span class="ident">iterator</span>
1667 .<span class="ident">filter</span>(<span class="op">|</span>(<span class="ident">k</span>, <span class="kw">_</span>)<span class="op">|</span> <span class="ident">k</span>.<span class="ident">starts_with</span>(<span class="kw-2">&</span><span class="ident">prefix</span>))
1668 .<span class="ident">skip</span>(<span class="number">1</span>)
1669 .<span class="ident">map</span>(<span class="op">|</span>(<span class="kw">_</span>, <span class="ident">data</span>)<span class="op">|</span> <span class="prelude-val">Ok</span>::<span class="op"><</span><span class="kw">_</span>, <span class="ident">CompactFiltersError</span><span class="op">></span>(<span class="ident">BundleEntry</span>::<span class="ident">deserialize</span>(<span class="kw-2">&</span><span class="ident">data</span>)<span class="question-mark">?</span>.<span class="number">1</span>))
1670 .<span class="ident">collect</span>::<span class="op"><</span><span class="prelude-ty">Result</span><span class="op"><</span><span class="kw">_</span>, <span class="kw">_</span><span class="op">></span><span class="op">></span>()<span class="question-mark">?</span>)
1673 <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">replace_checkpoints</span>(
1674 <span class="kw-2">&</span><span class="self">self</span>,
1675 <span class="ident">checkpoints</span>: <span class="ident">Vec</span><span class="op"><</span><span class="ident">FilterHash</span><span class="op">></span>,
1676 ) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Result</span><span class="op"><</span>(), <span class="ident">CompactFiltersError</span><span class="op">></span> {
1677 <span class="kw">let</span> <span class="ident">current_checkpoints</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">get_checkpoints</span>()<span class="question-mark">?</span>;
1679 <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">equal_bundles</span> <span class="op">=</span> <span class="number">0</span>;
1680 <span class="kw">for</span> (<span class="ident">index</span>, (<span class="ident">our</span>, <span class="ident">their</span>)) <span class="kw">in</span> <span class="ident">current_checkpoints</span>
1681 .<span class="ident">iter</span>()
1682 .<span class="ident">zip</span>(<span class="ident">checkpoints</span>.<span class="ident">iter</span>())
1683 .<span class="ident">enumerate</span>()
1685 <span class="ident">equal_bundles</span> <span class="op">=</span> <span class="ident">index</span>;
1687 <span class="kw">if</span> <span class="ident">our</span> <span class="op">!</span><span class="op">=</span> <span class="ident">their</span> {
1688 <span class="kw">break</span>;
1692 <span class="kw">let</span> <span class="ident">read_store</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">store</span>.<span class="ident">read</span>().<span class="ident">unwrap</span>();
1693 <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">batch</span> <span class="op">=</span> <span class="ident">WriteBatch</span>::<span class="ident">default</span>();
1695 <span class="kw">for</span> (<span class="ident">index</span>, <span class="ident">filter_hash</span>) <span class="kw">in</span> <span class="ident">checkpoints</span>.<span class="ident">iter</span>().<span class="ident">enumerate</span>().<span class="ident">skip</span>(<span class="ident">equal_bundles</span>) {
1696 <span class="kw">let</span> <span class="ident">key</span> <span class="op">=</span> <span class="ident">StoreEntry</span>::<span class="ident">CFilterTable</span>((<span class="self">self</span>.<span class="ident">filter_type</span>, <span class="prelude-val">Some</span>(<span class="ident">index</span> <span class="op">+</span> <span class="number">1</span>))).<span class="ident">get_key</span>(); <span class="comment">// +1 to skip the genesis' filter</span>
1698 <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>((<span class="ident">BundleStatus</span>::<span class="ident">Tip</span> { .. }, <span class="kw">_</span>)) <span class="op">=</span> <span class="ident">read_store</span>
1699 .<span class="ident">get_pinned</span>(<span class="kw-2">&</span><span class="ident">key</span>)<span class="question-mark">?</span>
1700 .<span class="ident">map</span>(<span class="op">|</span><span class="ident">data</span><span class="op">|</span> <span class="ident">BundleEntry</span>::<span class="ident">deserialize</span>(<span class="kw-2">&</span><span class="ident">data</span>))
1701 .<span class="ident">transpose</span>()<span class="question-mark">?</span>
1703 <span class="macro">println</span><span class="macro">!</span>(<span class="string">"Keeping bundle #{} as Tip"</span>, <span class="ident">index</span>);
1704 } <span class="kw">else</span> {
1705 <span class="ident">batch</span>.<span class="ident">put</span>(<span class="kw-2">&</span><span class="ident">key</span>, (<span class="ident">BundleStatus</span>::<span class="ident">Init</span>, <span class="kw-2">*</span><span class="ident">filter_hash</span>).<span class="ident">serialize</span>());
1709 <span class="ident">read_store</span>.<span class="ident">write</span>(<span class="ident">batch</span>)<span class="question-mark">?</span>;
1711 <span class="prelude-val">Ok</span>(())
1714 <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">advance_to_cf_headers</span>(
1715 <span class="kw-2">&</span><span class="self">self</span>,
1716 <span class="ident">bundle</span>: <span class="ident">usize</span>,
1717 <span class="ident">checkpoint_hash</span>: <span class="ident">FilterHeaderHash</span>,
1718 <span class="ident">filter_headers</span>: <span class="ident">Vec</span><span class="op"><</span><span class="ident">FilterHash</span><span class="op">></span>,
1719 ) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">BundleStatus</span>, <span class="ident">CompactFiltersError</span><span class="op">></span> {
1720 <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">last_hash</span> <span class="op">=</span> <span class="ident">checkpoint_hash</span>;
1721 <span class="kw">let</span> <span class="ident">cf_headers</span> <span class="op">=</span> <span class="ident">filter_headers</span>
1722 .<span class="ident">into_iter</span>()
1723 .<span class="ident">map</span>(<span class="op">|</span><span class="ident">filter_hash</span><span class="op">|</span> {
1724 <span class="kw">let</span> <span class="ident">filter_header</span> <span class="op">=</span> <span class="ident">FilterHeader</span> {
1725 <span class="ident">prev_header_hash</span>: <span class="ident">last_hash</span>,
1726 <span class="ident">filter_hash</span>,
1728 <span class="ident">last_hash</span> <span class="op">=</span> <span class="ident">filter_header</span>.<span class="ident">header_hash</span>();
1730 <span class="ident">filter_header</span>
1732 .<span class="ident">collect</span>();
1734 <span class="kw">let</span> <span class="ident">read_store</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">store</span>.<span class="ident">read</span>().<span class="ident">unwrap</span>();
1736 <span class="kw">let</span> <span class="ident">next_key</span> <span class="op">=</span> <span class="ident">StoreEntry</span>::<span class="ident">CFilterTable</span>((<span class="self">self</span>.<span class="ident">filter_type</span>, <span class="prelude-val">Some</span>(<span class="ident">bundle</span> <span class="op">+</span> <span class="number">1</span>))).<span class="ident">get_key</span>(); <span class="comment">// +1 to skip the genesis' filter</span>
1737 <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>((<span class="kw">_</span>, <span class="ident">next_checkpoint</span>)) <span class="op">=</span> <span class="ident">read_store</span>
1738 .<span class="ident">get_pinned</span>(<span class="kw-2">&</span><span class="ident">next_key</span>)<span class="question-mark">?</span>
1739 .<span class="ident">map</span>(<span class="op">|</span><span class="ident">data</span><span class="op">|</span> <span class="ident">BundleEntry</span>::<span class="ident">deserialize</span>(<span class="kw-2">&</span><span class="ident">data</span>))
1740 .<span class="ident">transpose</span>()<span class="question-mark">?</span>
1742 <span class="comment">// check connection with the next bundle if present</span>
1743 <span class="kw">if</span> <span class="ident">last_hash</span> <span class="op">!</span><span class="op">=</span> <span class="ident">next_checkpoint</span> {
1744 <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="ident">CompactFiltersError</span>::<span class="ident">InvalidFilterHeader</span>);
1748 <span class="kw">let</span> <span class="ident">key</span> <span class="op">=</span> <span class="ident">StoreEntry</span>::<span class="ident">CFilterTable</span>((<span class="self">self</span>.<span class="ident">filter_type</span>, <span class="prelude-val">Some</span>(<span class="ident">bundle</span>))).<span class="ident">get_key</span>();
1749 <span class="kw">let</span> <span class="ident">value</span> <span class="op">=</span> (<span class="ident">BundleStatus</span>::<span class="ident">CFHeaders</span> { <span class="ident">cf_headers</span> }, <span class="ident">checkpoint_hash</span>);
1751 <span class="ident">read_store</span>.<span class="ident">put</span>(<span class="ident">key</span>, <span class="ident">value</span>.<span class="ident">serialize</span>())<span class="question-mark">?</span>;
1753 <span class="prelude-val">Ok</span>(<span class="ident">value</span>.<span class="number">0</span>)
1756 <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">advance_to_cf_filters</span>(
1757 <span class="kw-2">&</span><span class="self">self</span>,
1758 <span class="ident">bundle</span>: <span class="ident">usize</span>,
1759 <span class="ident">checkpoint_hash</span>: <span class="ident">FilterHeaderHash</span>,
1760 <span class="ident">headers</span>: <span class="ident">Vec</span><span class="op"><</span><span class="ident">FilterHeader</span><span class="op">></span>,
1761 <span class="ident">filters</span>: <span class="ident">Vec</span><span class="op"><</span>(<span class="ident">usize</span>, <span class="ident">Vec</span><span class="op"><</span><span class="ident">u8</span><span class="op">></span>)<span class="op">></span>,
1762 ) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">BundleStatus</span>, <span class="ident">CompactFiltersError</span><span class="op">></span> {
1763 <span class="kw">let</span> <span class="ident">cf_filters</span> <span class="op">=</span> <span class="ident">filters</span>
1764 .<span class="ident">into_iter</span>()
1765 .<span class="ident">zip</span>(<span class="ident">headers</span>.<span class="ident">iter</span>())
1766 .<span class="ident">map</span>(<span class="op">|</span>((<span class="kw">_</span>, <span class="ident">filter_content</span>), <span class="ident">header</span>)<span class="op">|</span> {
1767 <span class="kw">if</span> <span class="ident">header</span>.<span class="ident">filter_hash</span> <span class="op">!</span><span class="op">=</span> <span class="ident">sha256d</span>::<span class="ident">Hash</span>::<span class="ident">hash</span>(<span class="kw-2">&</span><span class="ident">filter_content</span>).<span class="ident">into</span>() {
1768 <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="ident">CompactFiltersError</span>::<span class="ident">InvalidFilter</span>);
1771 <span class="prelude-val">Ok</span>::<span class="op"><</span><span class="kw">_</span>, <span class="ident">CompactFiltersError</span><span class="op">></span>(<span class="ident">filter_content</span>)
1773 .<span class="ident">collect</span>::<span class="op"><</span><span class="prelude-ty">Result</span><span class="op"><</span><span class="kw">_</span>, <span class="kw">_</span><span class="op">></span><span class="op">></span>()<span class="question-mark">?</span>;
1775 <span class="kw">let</span> <span class="ident">key</span> <span class="op">=</span> <span class="ident">StoreEntry</span>::<span class="ident">CFilterTable</span>((<span class="self">self</span>.<span class="ident">filter_type</span>, <span class="prelude-val">Some</span>(<span class="ident">bundle</span>))).<span class="ident">get_key</span>();
1776 <span class="kw">let</span> <span class="ident">value</span> <span class="op">=</span> (<span class="ident">BundleStatus</span>::<span class="ident">CFilters</span> { <span class="ident">cf_filters</span> }, <span class="ident">checkpoint_hash</span>);
1778 <span class="kw">let</span> <span class="ident">read_store</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">store</span>.<span class="ident">read</span>().<span class="ident">unwrap</span>();
1779 <span class="ident">read_store</span>.<span class="ident">put</span>(<span class="ident">key</span>, <span class="ident">value</span>.<span class="ident">serialize</span>())<span class="question-mark">?</span>;
1781 <span class="prelude-val">Ok</span>(<span class="ident">value</span>.<span class="number">0</span>)
1784 <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">prune_filters</span>(
1785 <span class="kw-2">&</span><span class="self">self</span>,
1786 <span class="ident">bundle</span>: <span class="ident">usize</span>,
1787 <span class="ident">checkpoint_hash</span>: <span class="ident">FilterHeaderHash</span>,
1788 ) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">BundleStatus</span>, <span class="ident">CompactFiltersError</span><span class="op">></span> {
1789 <span class="kw">let</span> <span class="ident">key</span> <span class="op">=</span> <span class="ident">StoreEntry</span>::<span class="ident">CFilterTable</span>((<span class="self">self</span>.<span class="ident">filter_type</span>, <span class="prelude-val">Some</span>(<span class="ident">bundle</span>))).<span class="ident">get_key</span>();
1790 <span class="kw">let</span> <span class="ident">value</span> <span class="op">=</span> (<span class="ident">BundleStatus</span>::<span class="ident">Pruned</span>, <span class="ident">checkpoint_hash</span>);
1792 <span class="kw">let</span> <span class="ident">read_store</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">store</span>.<span class="ident">read</span>().<span class="ident">unwrap</span>();
1793 <span class="ident">read_store</span>.<span class="ident">put</span>(<span class="ident">key</span>, <span class="ident">value</span>.<span class="ident">serialize</span>())<span class="question-mark">?</span>;
1795 <span class="prelude-val">Ok</span>(<span class="ident">value</span>.<span class="number">0</span>)
1798 <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">mark_as_tip</span>(
1799 <span class="kw-2">&</span><span class="self">self</span>,
1800 <span class="ident">bundle</span>: <span class="ident">usize</span>,
1801 <span class="ident">cf_filters</span>: <span class="ident">Vec</span><span class="op"><</span><span class="ident">Vec</span><span class="op"><</span><span class="ident">u8</span><span class="op">></span><span class="op">></span>,
1802 <span class="ident">checkpoint_hash</span>: <span class="ident">FilterHeaderHash</span>,
1803 ) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">BundleStatus</span>, <span class="ident">CompactFiltersError</span><span class="op">></span> {
1804 <span class="kw">let</span> <span class="ident">key</span> <span class="op">=</span> <span class="ident">StoreEntry</span>::<span class="ident">CFilterTable</span>((<span class="self">self</span>.<span class="ident">filter_type</span>, <span class="prelude-val">Some</span>(<span class="ident">bundle</span>))).<span class="ident">get_key</span>();
1805 <span class="kw">let</span> <span class="ident">value</span> <span class="op">=</span> (<span class="ident">BundleStatus</span>::<span class="ident">Tip</span> { <span class="ident">cf_filters</span> }, <span class="ident">checkpoint_hash</span>);
1807 <span class="kw">let</span> <span class="ident">read_store</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">store</span>.<span class="ident">read</span>().<span class="ident">unwrap</span>();
1808 <span class="ident">read_store</span>.<span class="ident">put</span>(<span class="ident">key</span>, <span class="ident">value</span>.<span class="ident">serialize</span>())<span class="question-mark">?</span>;
1810 <span class="prelude-val">Ok</span>(<span class="ident">value</span>.<span class="number">0</span>)
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