1 <!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Source of the Rust file `src/blockchain/esplora.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>esplora.rs - source</title><link rel="stylesheet" type="text/css" href="../../../normalize.css"><link rel="stylesheet" type="text/css" href="../../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../../../light.css" id="themeStyle"><link rel="stylesheet" type="text/css" href="../../../dark.css" disabled ><link rel="stylesheet" type="text/css" href="../../../ayu.css" disabled ><script id="default-settings"></script><script src="../../../storage.js"></script><noscript><link rel="stylesheet" href="../../../noscript.css"></noscript><link rel="icon" type="image/svg+xml" href="../../../favicon.svg">
2 <link rel="alternate icon" type="image/png" href="../../../favicon-16x16.png">
3 <link rel="alternate icon" type="image/png" href="../../../favicon-32x32.png"><style type="text/css">#crate-search{background-image:url("../../../down-arrow.svg");}</style></head><body class="rustdoc source"><!--[if lte IE 8]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="sidebar-menu">☰</div><a href='../../../bdk/index.html'><div class='logo-container rust-logo'><img src='../../../rust-logo.png' alt='logo'></div></a></nav><div class="theme-picker"><button id="theme-picker" aria-label="Pick another theme!" aria-haspopup="menu"><img src="../../../brush.svg" width="18" alt="Pick another theme!"></button><div id="theme-choices" role="menu"></div></div><script src="../../../theme.js"></script><nav class="sub"><form class="search-form"><div class="search-container"><div><select id="crate-search"><option value="All crates">All crates</option></select><input class="search-input" name="search" disabled autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"></div><button type="button" class="help-button">?</button>
4 <a id="settings-menu" href="../../../settings.html"><img src="../../../wheel.svg" width="18" alt="Change settings"></a></div></form></nav><section id="main" class="content"><pre class="line-numbers"><span id="1"> 1</span>
10 <span id="7"> 7</span>
11 <span id="8"> 8</span>
12 <span id="9"> 9</span>
13 <span id="10"> 10</span>
14 <span id="11"> 11</span>
15 <span id="12"> 12</span>
16 <span id="13"> 13</span>
17 <span id="14"> 14</span>
18 <span id="15"> 15</span>
19 <span id="16"> 16</span>
20 <span id="17"> 17</span>
21 <span id="18"> 18</span>
22 <span id="19"> 19</span>
23 <span id="20"> 20</span>
24 <span id="21"> 21</span>
25 <span id="22"> 22</span>
26 <span id="23"> 23</span>
27 <span id="24"> 24</span>
28 <span id="25"> 25</span>
29 <span id="26"> 26</span>
30 <span id="27"> 27</span>
31 <span id="28"> 28</span>
32 <span id="29"> 29</span>
33 <span id="30"> 30</span>
34 <span id="31"> 31</span>
35 <span id="32"> 32</span>
36 <span id="33"> 33</span>
37 <span id="34"> 34</span>
38 <span id="35"> 35</span>
39 <span id="36"> 36</span>
40 <span id="37"> 37</span>
41 <span id="38"> 38</span>
42 <span id="39"> 39</span>
43 <span id="40"> 40</span>
44 <span id="41"> 41</span>
45 <span id="42"> 42</span>
46 <span id="43"> 43</span>
47 <span id="44"> 44</span>
48 <span id="45"> 45</span>
49 <span id="46"> 46</span>
50 <span id="47"> 47</span>
51 <span id="48"> 48</span>
52 <span id="49"> 49</span>
53 <span id="50"> 50</span>
54 <span id="51"> 51</span>
55 <span id="52"> 52</span>
56 <span id="53"> 53</span>
57 <span id="54"> 54</span>
58 <span id="55"> 55</span>
59 <span id="56"> 56</span>
60 <span id="57"> 57</span>
61 <span id="58"> 58</span>
62 <span id="59"> 59</span>
63 <span id="60"> 60</span>
64 <span id="61"> 61</span>
65 <span id="62"> 62</span>
66 <span id="63"> 63</span>
67 <span id="64"> 64</span>
68 <span id="65"> 65</span>
69 <span id="66"> 66</span>
70 <span id="67"> 67</span>
71 <span id="68"> 68</span>
72 <span id="69"> 69</span>
73 <span id="70"> 70</span>
74 <span id="71"> 71</span>
75 <span id="72"> 72</span>
76 <span id="73"> 73</span>
77 <span id="74"> 74</span>
78 <span id="75"> 75</span>
79 <span id="76"> 76</span>
80 <span id="77"> 77</span>
81 <span id="78"> 78</span>
82 <span id="79"> 79</span>
83 <span id="80"> 80</span>
84 <span id="81"> 81</span>
85 <span id="82"> 82</span>
86 <span id="83"> 83</span>
87 <span id="84"> 84</span>
88 <span id="85"> 85</span>
89 <span id="86"> 86</span>
90 <span id="87"> 87</span>
91 <span id="88"> 88</span>
92 <span id="89"> 89</span>
93 <span id="90"> 90</span>
94 <span id="91"> 91</span>
95 <span id="92"> 92</span>
96 <span id="93"> 93</span>
97 <span id="94"> 94</span>
98 <span id="95"> 95</span>
99 <span id="96"> 96</span>
100 <span id="97"> 97</span>
101 <span id="98"> 98</span>
102 <span id="99"> 99</span>
103 <span id="100">100</span>
104 <span id="101">101</span>
105 <span id="102">102</span>
106 <span id="103">103</span>
107 <span id="104">104</span>
108 <span id="105">105</span>
109 <span id="106">106</span>
110 <span id="107">107</span>
111 <span id="108">108</span>
112 <span id="109">109</span>
113 <span id="110">110</span>
114 <span id="111">111</span>
115 <span id="112">112</span>
116 <span id="113">113</span>
117 <span id="114">114</span>
118 <span id="115">115</span>
119 <span id="116">116</span>
120 <span id="117">117</span>
121 <span id="118">118</span>
122 <span id="119">119</span>
123 <span id="120">120</span>
124 <span id="121">121</span>
125 <span id="122">122</span>
126 <span id="123">123</span>
127 <span id="124">124</span>
128 <span id="125">125</span>
129 <span id="126">126</span>
130 <span id="127">127</span>
131 <span id="128">128</span>
132 <span id="129">129</span>
133 <span id="130">130</span>
134 <span id="131">131</span>
135 <span id="132">132</span>
136 <span id="133">133</span>
137 <span id="134">134</span>
138 <span id="135">135</span>
139 <span id="136">136</span>
140 <span id="137">137</span>
141 <span id="138">138</span>
142 <span id="139">139</span>
143 <span id="140">140</span>
144 <span id="141">141</span>
145 <span id="142">142</span>
146 <span id="143">143</span>
147 <span id="144">144</span>
148 <span id="145">145</span>
149 <span id="146">146</span>
150 <span id="147">147</span>
151 <span id="148">148</span>
152 <span id="149">149</span>
153 <span id="150">150</span>
154 <span id="151">151</span>
155 <span id="152">152</span>
156 <span id="153">153</span>
157 <span id="154">154</span>
158 <span id="155">155</span>
159 <span id="156">156</span>
160 <span id="157">157</span>
161 <span id="158">158</span>
162 <span id="159">159</span>
163 <span id="160">160</span>
164 <span id="161">161</span>
165 <span id="162">162</span>
166 <span id="163">163</span>
167 <span id="164">164</span>
168 <span id="165">165</span>
169 <span id="166">166</span>
170 <span id="167">167</span>
171 <span id="168">168</span>
172 <span id="169">169</span>
173 <span id="170">170</span>
174 <span id="171">171</span>
175 <span id="172">172</span>
176 <span id="173">173</span>
177 <span id="174">174</span>
178 <span id="175">175</span>
179 <span id="176">176</span>
180 <span id="177">177</span>
181 <span id="178">178</span>
182 <span id="179">179</span>
183 <span id="180">180</span>
184 <span id="181">181</span>
185 <span id="182">182</span>
186 <span id="183">183</span>
187 <span id="184">184</span>
188 <span id="185">185</span>
189 <span id="186">186</span>
190 <span id="187">187</span>
191 <span id="188">188</span>
192 <span id="189">189</span>
193 <span id="190">190</span>
194 <span id="191">191</span>
195 <span id="192">192</span>
196 <span id="193">193</span>
197 <span id="194">194</span>
198 <span id="195">195</span>
199 <span id="196">196</span>
200 <span id="197">197</span>
201 <span id="198">198</span>
202 <span id="199">199</span>
203 <span id="200">200</span>
204 <span id="201">201</span>
205 <span id="202">202</span>
206 <span id="203">203</span>
207 <span id="204">204</span>
208 <span id="205">205</span>
209 <span id="206">206</span>
210 <span id="207">207</span>
211 <span id="208">208</span>
212 <span id="209">209</span>
213 <span id="210">210</span>
214 <span id="211">211</span>
215 <span id="212">212</span>
216 <span id="213">213</span>
217 <span id="214">214</span>
218 <span id="215">215</span>
219 <span id="216">216</span>
220 <span id="217">217</span>
221 <span id="218">218</span>
222 <span id="219">219</span>
223 <span id="220">220</span>
224 <span id="221">221</span>
225 <span id="222">222</span>
226 <span id="223">223</span>
227 <span id="224">224</span>
228 <span id="225">225</span>
229 <span id="226">226</span>
230 <span id="227">227</span>
231 <span id="228">228</span>
232 <span id="229">229</span>
233 <span id="230">230</span>
234 <span id="231">231</span>
235 <span id="232">232</span>
236 <span id="233">233</span>
237 <span id="234">234</span>
238 <span id="235">235</span>
239 <span id="236">236</span>
240 <span id="237">237</span>
241 <span id="238">238</span>
242 <span id="239">239</span>
243 <span id="240">240</span>
244 <span id="241">241</span>
245 <span id="242">242</span>
246 <span id="243">243</span>
247 <span id="244">244</span>
248 <span id="245">245</span>
249 <span id="246">246</span>
250 <span id="247">247</span>
251 <span id="248">248</span>
252 <span id="249">249</span>
253 <span id="250">250</span>
254 <span id="251">251</span>
255 <span id="252">252</span>
256 <span id="253">253</span>
257 <span id="254">254</span>
258 <span id="255">255</span>
259 <span id="256">256</span>
260 <span id="257">257</span>
261 <span id="258">258</span>
262 <span id="259">259</span>
263 <span id="260">260</span>
264 <span id="261">261</span>
265 <span id="262">262</span>
266 <span id="263">263</span>
267 <span id="264">264</span>
268 <span id="265">265</span>
269 <span id="266">266</span>
270 <span id="267">267</span>
271 <span id="268">268</span>
272 <span id="269">269</span>
273 <span id="270">270</span>
274 <span id="271">271</span>
275 <span id="272">272</span>
276 <span id="273">273</span>
277 <span id="274">274</span>
278 <span id="275">275</span>
279 <span id="276">276</span>
280 <span id="277">277</span>
281 <span id="278">278</span>
282 <span id="279">279</span>
283 <span id="280">280</span>
284 <span id="281">281</span>
285 <span id="282">282</span>
286 <span id="283">283</span>
287 <span id="284">284</span>
288 <span id="285">285</span>
289 <span id="286">286</span>
290 <span id="287">287</span>
291 <span id="288">288</span>
292 <span id="289">289</span>
293 <span id="290">290</span>
294 <span id="291">291</span>
295 <span id="292">292</span>
296 <span id="293">293</span>
297 <span id="294">294</span>
298 <span id="295">295</span>
299 <span id="296">296</span>
300 <span id="297">297</span>
301 <span id="298">298</span>
302 <span id="299">299</span>
303 <span id="300">300</span>
304 <span id="301">301</span>
305 <span id="302">302</span>
306 <span id="303">303</span>
307 <span id="304">304</span>
308 <span id="305">305</span>
309 <span id="306">306</span>
310 <span id="307">307</span>
311 <span id="308">308</span>
312 <span id="309">309</span>
313 <span id="310">310</span>
314 <span id="311">311</span>
315 <span id="312">312</span>
316 <span id="313">313</span>
317 <span id="314">314</span>
318 <span id="315">315</span>
319 <span id="316">316</span>
320 <span id="317">317</span>
321 <span id="318">318</span>
322 <span id="319">319</span>
323 <span id="320">320</span>
324 <span id="321">321</span>
325 <span id="322">322</span>
326 <span id="323">323</span>
327 <span id="324">324</span>
328 <span id="325">325</span>
329 <span id="326">326</span>
330 <span id="327">327</span>
331 <span id="328">328</span>
332 <span id="329">329</span>
333 <span id="330">330</span>
334 <span id="331">331</span>
335 <span id="332">332</span>
336 <span id="333">333</span>
337 <span id="334">334</span>
338 <span id="335">335</span>
339 <span id="336">336</span>
340 <span id="337">337</span>
341 <span id="338">338</span>
342 <span id="339">339</span>
343 <span id="340">340</span>
344 <span id="341">341</span>
345 <span id="342">342</span>
346 <span id="343">343</span>
347 <span id="344">344</span>
348 <span id="345">345</span>
349 <span id="346">346</span>
350 <span id="347">347</span>
351 <span id="348">348</span>
352 <span id="349">349</span>
353 <span id="350">350</span>
354 <span id="351">351</span>
355 <span id="352">352</span>
356 <span id="353">353</span>
357 <span id="354">354</span>
358 <span id="355">355</span>
359 <span id="356">356</span>
360 <span id="357">357</span>
361 <span id="358">358</span>
362 <span id="359">359</span>
363 <span id="360">360</span>
364 <span id="361">361</span>
365 <span id="362">362</span>
366 <span id="363">363</span>
367 <span id="364">364</span>
368 <span id="365">365</span>
369 <span id="366">366</span>
370 <span id="367">367</span>
371 <span id="368">368</span>
372 <span id="369">369</span>
373 <span id="370">370</span>
374 <span id="371">371</span>
375 <span id="372">372</span>
376 <span id="373">373</span>
377 <span id="374">374</span>
378 <span id="375">375</span>
379 <span id="376">376</span>
380 <span id="377">377</span>
381 <span id="378">378</span>
382 <span id="379">379</span>
383 <span id="380">380</span>
384 <span id="381">381</span>
385 <span id="382">382</span>
386 <span id="383">383</span>
387 <span id="384">384</span>
388 <span id="385">385</span>
389 <span id="386">386</span>
390 <span id="387">387</span>
391 <span id="388">388</span>
392 <span id="389">389</span>
393 <span id="390">390</span>
394 <span id="391">391</span>
395 <span id="392">392</span>
396 <span id="393">393</span>
397 <span id="394">394</span>
398 <span id="395">395</span>
399 <span id="396">396</span>
400 <span id="397">397</span>
401 <span id="398">398</span>
402 <span id="399">399</span>
403 <span id="400">400</span>
404 <span id="401">401</span>
405 <span id="402">402</span>
406 <span id="403">403</span>
407 <span id="404">404</span>
408 <span id="405">405</span>
409 <span id="406">406</span>
410 <span id="407">407</span>
411 <span id="408">408</span>
412 <span id="409">409</span>
413 <span id="410">410</span>
414 <span id="411">411</span>
415 <span id="412">412</span>
416 <span id="413">413</span>
417 <span id="414">414</span>
418 <span id="415">415</span>
419 <span id="416">416</span>
420 <span id="417">417</span>
421 <span id="418">418</span>
422 <span id="419">419</span>
423 <span id="420">420</span>
424 <span id="421">421</span>
425 <span id="422">422</span>
426 <span id="423">423</span>
427 <span id="424">424</span>
428 <span id="425">425</span>
429 <span id="426">426</span>
430 <span id="427">427</span>
431 <span id="428">428</span>
432 <span id="429">429</span>
433 </pre><div class="example-wrap"><pre class="rust ">
434 <span class="comment">// Magical Bitcoin Library</span>
435 <span class="comment">// Written in 2020 by</span>
436 <span class="comment">// Alekos Filini <alekos.filini@gmail.com></span>
437 <span class="comment">//</span>
438 <span class="comment">// Copyright (c) 2020 Magical Bitcoin</span>
439 <span class="comment">//</span>
440 <span class="comment">// Permission is hereby granted, free of charge, to any person obtaining a copy</span>
441 <span class="comment">// of this software and associated documentation files (the "Software"), to deal</span>
442 <span class="comment">// in the Software without restriction, including without limitation the rights</span>
443 <span class="comment">// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell</span>
444 <span class="comment">// copies of the Software, and to permit persons to whom the Software is</span>
445 <span class="comment">// furnished to do so, subject to the following conditions:</span>
446 <span class="comment">//</span>
447 <span class="comment">// The above copyright notice and this permission notice shall be included in all</span>
448 <span class="comment">// copies or substantial portions of the Software.</span>
449 <span class="comment">//</span>
450 <span class="comment">// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR</span>
451 <span class="comment">// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,</span>
452 <span class="comment">// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE</span>
453 <span class="comment">// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER</span>
454 <span class="comment">// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,</span>
455 <span class="comment">// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE</span>
456 <span class="comment">// SOFTWARE.</span>
458 <span class="doccomment">//! Esplora</span>
459 <span class="doccomment">//!</span>
460 <span class="doccomment">//! This module defines a [`Blockchain`] struct that can query an Esplora backend</span>
461 <span class="doccomment">//! populate the wallet's [database](crate::database::Database) by</span>
462 <span class="doccomment">//!</span>
463 <span class="doccomment">//! ## Example</span>
464 <span class="doccomment">//!</span>
465 <span class="doccomment">//! ```no_run</span>
466 <span class="doccomment">//! # use bdk::blockchain::esplora::EsploraBlockchain;</span>
467 <span class="doccomment">//! let blockchain = EsploraBlockchain::new("https://blockstream.info/testnet/api", None);</span>
468 <span class="doccomment">//! # Ok::<(), bdk::Error>(())</span>
469 <span class="doccomment">//! ```</span>
471 <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">collections</span>::{<span class="ident">HashMap</span>, <span class="ident">HashSet</span>};
472 <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">fmt</span>;
474 <span class="kw">use</span> <span class="ident">futures</span>::<span class="ident">stream</span>::{<span class="self">self</span>, <span class="ident">FuturesOrdered</span>, <span class="ident">StreamExt</span>, <span class="ident">TryStreamExt</span>};
476 <span class="attribute">#[<span class="ident">allow</span>(<span class="ident">unused_imports</span>)]</span>
477 <span class="kw">use</span> <span class="ident">log</span>::{<span class="ident">debug</span>, <span class="ident">error</span>, <span class="ident">info</span>, <span class="ident">trace</span>};
479 <span class="kw">use</span> <span class="ident">serde</span>::<span class="ident">Deserialize</span>;
481 <span class="kw">use</span> <span class="ident">reqwest</span>::{<span class="ident">Client</span>, <span class="ident">StatusCode</span>};
483 <span class="kw">use</span> <span class="ident">bitcoin</span>::<span class="ident">consensus</span>::{<span class="self">self</span>, <span class="ident">deserialize</span>, <span class="ident">serialize</span>};
484 <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>, <span class="ident">ToHex</span>};
485 <span class="kw">use</span> <span class="ident">bitcoin</span>::<span class="ident">hashes</span>::{<span class="ident">sha256</span>, <span class="ident">Hash</span>};
486 <span class="kw">use</span> <span class="ident">bitcoin</span>::{<span class="ident">BlockHash</span>, <span class="ident">BlockHeader</span>, <span class="ident">Script</span>, <span class="ident">Transaction</span>, <span class="ident">Txid</span>};
488 <span class="kw">use</span> <span class="self">self</span>::<span class="ident">utils</span>::{<span class="ident">ELSGetHistoryRes</span>, <span class="ident">ElectrumLikeSync</span>};
489 <span class="kw">use</span> <span class="kw">super</span>::<span class="kw-2">*</span>;
490 <span class="kw">use</span> <span class="kw">crate</span>::<span class="ident">database</span>::<span class="ident">BatchDatabase</span>;
491 <span class="kw">use</span> <span class="kw">crate</span>::<span class="ident">error</span>::<span class="ident">Error</span>;
492 <span class="kw">use</span> <span class="kw">crate</span>::<span class="ident">wallet</span>::<span class="ident">utils</span>::<span class="ident">ChunksIterator</span>;
493 <span class="kw">use</span> <span class="kw">crate</span>::<span class="ident">FeeRate</span>;
495 <span class="kw">const</span> <span class="ident">DEFAULT_CONCURRENT_REQUESTS</span>: <span class="ident">u8</span> <span class="op">=</span> <span class="number">4</span>;
497 <span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Debug</span>)]</span>
498 <span class="kw">struct</span> <span class="ident">UrlClient</span> {
499 <span class="ident">url</span>: <span class="ident">String</span>,
500 <span class="comment">// We use the async client instead of the blocking one because it automatically uses `fetch`</span>
501 <span class="comment">// when the target platform is wasm32.</span>
502 <span class="ident">client</span>: <span class="ident">Client</span>,
503 <span class="ident">concurrency</span>: <span class="ident">u8</span>,
506 <span class="doccomment">/// Structure that implements the logic to sync with Esplora</span>
507 <span class="doccomment">///</span>
508 <span class="doccomment">/// ## Example</span>
509 <span class="doccomment">/// See the [`blockchain::esplora`](crate::blockchain::esplora) module for a usage example.</span>
510 <span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Debug</span>)]</span>
511 <span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">EsploraBlockchain</span>(<span class="ident">UrlClient</span>);
513 <span class="kw">impl</span> <span class="ident">std</span>::<span class="ident">convert</span>::<span class="ident">From</span><span class="op"><</span><span class="ident">UrlClient</span><span class="op">></span> <span class="kw">for</span> <span class="ident">EsploraBlockchain</span> {
514 <span class="kw">fn</span> <span class="ident">from</span>(<span class="ident">url_client</span>: <span class="ident">UrlClient</span>) <span class="op">-</span><span class="op">></span> <span class="self">Self</span> {
515 <span class="ident">EsploraBlockchain</span>(<span class="ident">url_client</span>)
519 <span class="kw">impl</span> <span class="ident">EsploraBlockchain</span> {
520 <span class="doccomment">/// Create a new instance of the client from a base URL</span>
521 <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">new</span>(<span class="ident">base_url</span>: <span class="kw-2">&</span><span class="ident">str</span>, <span class="ident">concurrency</span>: <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">u8</span><span class="op">></span>) <span class="op">-</span><span class="op">></span> <span class="self">Self</span> {
522 <span class="ident">EsploraBlockchain</span>(<span class="ident">UrlClient</span> {
523 <span class="ident">url</span>: <span class="ident">base_url</span>.<span class="ident">to_string</span>(),
524 <span class="ident">client</span>: <span class="ident">Client</span>::<span class="ident">new</span>(),
525 <span class="ident">concurrency</span>: <span class="ident">concurrency</span>.<span class="ident">unwrap_or</span>(<span class="ident">DEFAULT_CONCURRENT_REQUESTS</span>),
530 <span class="attribute">#[<span class="ident">maybe_async</span>]</span>
531 <span class="kw">impl</span> <span class="ident">Blockchain</span> <span class="kw">for</span> <span class="ident">EsploraBlockchain</span> {
532 <span class="kw">fn</span> <span class="ident">get_capabilities</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="ident">HashSet</span><span class="op"><</span><span class="ident">Capability</span><span class="op">></span> {
533 <span class="macro">vec</span><span class="macro">!</span>[
534 <span class="ident">Capability</span>::<span class="ident">FullHistory</span>,
535 <span class="ident">Capability</span>::<span class="ident">GetAnyTx</span>,
536 <span class="ident">Capability</span>::<span class="ident">AccurateFees</span>,
538 .<span class="ident">into_iter</span>()
539 .<span class="ident">collect</span>()
542 <span class="kw">fn</span> <span class="ident">setup</span><span class="op"><</span><span class="ident">D</span>: <span class="ident">BatchDatabase</span>, <span class="ident">P</span>: <span class="ident">Progress</span><span class="op">></span>(
543 <span class="kw-2">&</span><span class="self">self</span>,
544 <span class="ident">stop_gap</span>: <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">usize</span><span class="op">></span>,
545 <span class="ident">database</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">D</span>,
546 <span class="ident">progress_update</span>: <span class="ident">P</span>,
547 ) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Result</span><span class="op"><</span>(), <span class="ident">Error</span><span class="op">></span> {
548 <span class="macro">maybe_await</span><span class="macro">!</span>(<span class="self">self</span>
549 .<span class="number">0</span>
550 .<span class="ident">electrum_like_setup</span>(<span class="ident">stop_gap</span>, <span class="ident">database</span>, <span class="ident">progress_update</span>))
553 <span class="kw">fn</span> <span class="ident">get_tx</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">txid</span>: <span class="kw-2">&</span><span class="ident">Txid</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">Transaction</span><span class="op">></span>, <span class="ident">Error</span><span class="op">></span> {
554 <span class="prelude-val">Ok</span>(<span class="macro">await_or_block</span><span class="macro">!</span>(<span class="self">self</span>.<span class="number">0</span>.<span class="ident">_get_tx</span>(<span class="ident">txid</span>))<span class="question-mark">?</span>)
557 <span class="kw">fn</span> <span class="ident">broadcast</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">tx</span>: <span class="kw-2">&</span><span class="ident">Transaction</span>) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Result</span><span class="op"><</span>(), <span class="ident">Error</span><span class="op">></span> {
558 <span class="prelude-val">Ok</span>(<span class="macro">await_or_block</span><span class="macro">!</span>(<span class="self">self</span>.<span class="number">0</span>.<span class="ident">_broadcast</span>(<span class="ident">tx</span>))<span class="question-mark">?</span>)
561 <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">u32</span>, <span class="ident">Error</span><span class="op">></span> {
562 <span class="prelude-val">Ok</span>(<span class="macro">await_or_block</span><span class="macro">!</span>(<span class="self">self</span>.<span class="number">0</span>.<span class="ident">_get_height</span>())<span class="question-mark">?</span>)
565 <span class="kw">fn</span> <span class="ident">estimate_fee</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">target</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">FeeRate</span>, <span class="ident">Error</span><span class="op">></span> {
566 <span class="kw">let</span> <span class="ident">estimates</span> <span class="op">=</span> <span class="macro">await_or_block</span><span class="macro">!</span>(<span class="self">self</span>.<span class="number">0</span>.<span class="ident">_get_fee_estimates</span>())<span class="question-mark">?</span>;
568 <span class="kw">let</span> <span class="ident">fee_val</span> <span class="op">=</span> <span class="ident">estimates</span>
569 .<span class="ident">into_iter</span>()
570 .<span class="ident">map</span>(<span class="op">|</span>(<span class="ident">k</span>, <span class="ident">v</span>)<span class="op">|</span> <span class="prelude-val">Ok</span>::<span class="op"><</span><span class="kw">_</span>, <span class="ident">std</span>::<span class="ident">num</span>::<span class="ident">ParseIntError</span><span class="op">></span>((<span class="ident">k</span>.<span class="ident">parse</span>::<span class="op"><</span><span class="ident">usize</span><span class="op">></span>()<span class="question-mark">?</span>, <span class="ident">v</span>)))
571 .<span class="ident">collect</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="kw">_</span><span class="op">></span>, <span class="kw">_</span><span class="op">></span><span class="op">></span>()
572 .<span class="ident">map_err</span>(<span class="op">|</span><span class="ident">e</span><span class="op">|</span> <span class="ident">Error</span>::<span class="ident">Generic</span>(<span class="ident">e</span>.<span class="ident">to_string</span>()))<span class="question-mark">?</span>
573 .<span class="ident">into_iter</span>()
574 .<span class="ident">take_while</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="op"><</span><span class="op">=</span> <span class="kw-2">&</span><span class="ident">target</span>)
575 .<span class="ident">map</span>(<span class="op">|</span>(<span class="kw">_</span>, <span class="ident">v</span>)<span class="op">|</span> <span class="ident">v</span>)
576 .<span class="ident">last</span>()
577 .<span class="ident">unwrap_or</span>(<span class="number">1.0</span>);
579 <span class="prelude-val">Ok</span>(<span class="ident">FeeRate</span>::<span class="ident">from_sat_per_vb</span>(<span class="ident">fee_val</span> <span class="kw">as</span> <span class="ident">f32</span>))
583 <span class="kw">impl</span> <span class="ident">UrlClient</span> {
584 <span class="kw">fn</span> <span class="ident">script_to_scripthash</span>(<span class="ident">script</span>: <span class="kw-2">&</span><span class="ident">Script</span>) <span class="op">-</span><span class="op">></span> <span class="ident">String</span> {
585 <span class="ident">sha256</span>::<span class="ident">Hash</span>::<span class="ident">hash</span>(<span class="ident">script</span>.<span class="ident">as_bytes</span>()).<span class="ident">into_inner</span>().<span class="ident">to_hex</span>()
588 <span class="ident">async</span> <span class="kw">fn</span> <span class="ident">_get_tx</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">txid</span>: <span class="kw-2">&</span><span class="ident">Txid</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">Transaction</span><span class="op">></span>, <span class="ident">EsploraError</span><span class="op">></span> {
589 <span class="kw">let</span> <span class="ident">resp</span> <span class="op">=</span> <span class="self">self</span>
590 .<span class="ident">client</span>
591 .<span class="ident">get</span>(<span class="kw-2">&</span><span class="macro">format</span><span class="macro">!</span>(<span class="string">"{}/tx/{}/raw"</span>, <span class="self">self</span>.<span class="ident">url</span>, <span class="ident">txid</span>))
592 .<span class="ident">send</span>()
593 .<span class="ident">await</span><span class="question-mark">?</span>;
595 <span class="kw">if</span> <span class="kw">let</span> <span class="ident">StatusCode</span>::<span class="ident">NOT_FOUND</span> <span class="op">=</span> <span class="ident">resp</span>.<span class="ident">status</span>() {
596 <span class="kw">return</span> <span class="prelude-val">Ok</span>(<span class="prelude-val">None</span>);
599 <span class="prelude-val">Ok</span>(<span class="prelude-val">Some</span>(<span class="ident">deserialize</span>(<span class="kw-2">&</span><span class="ident">resp</span>.<span class="ident">error_for_status</span>()<span class="question-mark">?</span>.<span class="ident">bytes</span>().<span class="ident">await</span><span class="question-mark">?</span>)<span class="question-mark">?</span>))
602 <span class="ident">async</span> <span class="kw">fn</span> <span class="ident">_get_tx_no_opt</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">txid</span>: <span class="kw-2">&</span><span class="ident">Txid</span>) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">Transaction</span>, <span class="ident">EsploraError</span><span class="op">></span> {
603 <span class="kw">match</span> <span class="self">self</span>.<span class="ident">_get_tx</span>(<span class="ident">txid</span>).<span class="ident">await</span> {
604 <span class="prelude-val">Ok</span>(<span class="prelude-val">Some</span>(<span class="ident">tx</span>)) <span class="op">=</span><span class="op">></span> <span class="prelude-val">Ok</span>(<span class="ident">tx</span>),
605 <span class="prelude-val">Ok</span>(<span class="prelude-val">None</span>) <span class="op">=</span><span class="op">></span> <span class="prelude-val">Err</span>(<span class="ident">EsploraError</span>::<span class="ident">TransactionNotFound</span>(<span class="kw-2">*</span><span class="ident">txid</span>)),
606 <span class="prelude-val">Err</span>(<span class="ident">e</span>) <span class="op">=</span><span class="op">></span> <span class="prelude-val">Err</span>(<span class="ident">e</span>),
610 <span class="ident">async</span> <span class="kw">fn</span> <span class="ident">_get_header</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">block_height</span>: <span class="ident">u32</span>) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">BlockHeader</span>, <span class="ident">EsploraError</span><span class="op">></span> {
611 <span class="kw">let</span> <span class="ident">resp</span> <span class="op">=</span> <span class="self">self</span>
612 .<span class="ident">client</span>
613 .<span class="ident">get</span>(<span class="kw-2">&</span><span class="macro">format</span><span class="macro">!</span>(<span class="string">"{}/block-height/{}"</span>, <span class="self">self</span>.<span class="ident">url</span>, <span class="ident">block_height</span>))
614 .<span class="ident">send</span>()
615 .<span class="ident">await</span><span class="question-mark">?</span>;
617 <span class="kw">if</span> <span class="kw">let</span> <span class="ident">StatusCode</span>::<span class="ident">NOT_FOUND</span> <span class="op">=</span> <span class="ident">resp</span>.<span class="ident">status</span>() {
618 <span class="kw">return</span> <span class="prelude-val">Err</span>(<span class="ident">EsploraError</span>::<span class="ident">HeaderHeightNotFound</span>(<span class="ident">block_height</span>));
620 <span class="kw">let</span> <span class="ident">bytes</span> <span class="op">=</span> <span class="ident">resp</span>.<span class="ident">bytes</span>().<span class="ident">await</span><span class="question-mark">?</span>;
621 <span class="kw">let</span> <span class="ident">hash</span> <span class="op">=</span> <span class="ident">std</span>::<span class="ident">str</span>::<span class="ident">from_utf8</span>(<span class="kw-2">&</span><span class="ident">bytes</span>)
622 .<span class="ident">map_err</span>(<span class="op">|</span><span class="kw">_</span><span class="op">|</span> <span class="ident">EsploraError</span>::<span class="ident">HeaderHeightNotFound</span>(<span class="ident">block_height</span>))<span class="question-mark">?</span>;
624 <span class="kw">let</span> <span class="ident">resp</span> <span class="op">=</span> <span class="self">self</span>
625 .<span class="ident">client</span>
626 .<span class="ident">get</span>(<span class="kw-2">&</span><span class="macro">format</span><span class="macro">!</span>(<span class="string">"{}/block/{}/header"</span>, <span class="self">self</span>.<span class="ident">url</span>, <span class="ident">hash</span>))
627 .<span class="ident">send</span>()
628 .<span class="ident">await</span><span class="question-mark">?</span>;
630 <span class="kw">let</span> <span class="ident">header</span> <span class="op">=</span> <span class="ident">deserialize</span>(<span class="kw-2">&</span><span class="ident">Vec</span>::<span class="ident">from_hex</span>(<span class="kw-2">&</span><span class="ident">resp</span>.<span class="ident">text</span>().<span class="ident">await</span><span class="question-mark">?</span>)<span class="question-mark">?</span>)<span class="question-mark">?</span>;
632 <span class="prelude-val">Ok</span>(<span class="ident">header</span>)
635 <span class="ident">async</span> <span class="kw">fn</span> <span class="ident">_broadcast</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">transaction</span>: <span class="kw-2">&</span><span class="ident">Transaction</span>) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Result</span><span class="op"><</span>(), <span class="ident">EsploraError</span><span class="op">></span> {
636 <span class="self">self</span>.<span class="ident">client</span>
637 .<span class="ident">post</span>(<span class="kw-2">&</span><span class="macro">format</span><span class="macro">!</span>(<span class="string">"{}/tx"</span>, <span class="self">self</span>.<span class="ident">url</span>))
638 .<span class="ident">body</span>(<span class="ident">serialize</span>(<span class="ident">transaction</span>).<span class="ident">to_hex</span>())
639 .<span class="ident">send</span>()
640 .<span class="ident">await</span><span class="question-mark">?</span>
641 .<span class="ident">error_for_status</span>()<span class="question-mark">?</span>;
643 <span class="prelude-val">Ok</span>(())
646 <span class="ident">async</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">u32</span>, <span class="ident">EsploraError</span><span class="op">></span> {
647 <span class="kw">let</span> <span class="ident">req</span> <span class="op">=</span> <span class="self">self</span>
648 .<span class="ident">client</span>
649 .<span class="ident">get</span>(<span class="kw-2">&</span><span class="macro">format</span><span class="macro">!</span>(<span class="string">"{}/blocks/tip/height"</span>, <span class="self">self</span>.<span class="ident">url</span>))
650 .<span class="ident">send</span>()
651 .<span class="ident">await</span><span class="question-mark">?</span>;
653 <span class="prelude-val">Ok</span>(<span class="ident">req</span>.<span class="ident">error_for_status</span>()<span class="question-mark">?</span>.<span class="ident">text</span>().<span class="ident">await</span><span class="question-mark">?</span>.<span class="ident">parse</span>()<span class="question-mark">?</span>)
656 <span class="ident">async</span> <span class="kw">fn</span> <span class="ident">_script_get_history</span>(
657 <span class="kw-2">&</span><span class="self">self</span>,
658 <span class="ident">script</span>: <span class="kw-2">&</span><span class="ident">Script</span>,
659 ) <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">ELSGetHistoryRes</span><span class="op">></span>, <span class="ident">EsploraError</span><span class="op">></span> {
660 <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">result</span> <span class="op">=</span> <span class="ident">Vec</span>::<span class="ident">new</span>();
661 <span class="kw">let</span> <span class="ident">scripthash</span> <span class="op">=</span> <span class="self">Self</span>::<span class="ident">script_to_scripthash</span>(<span class="ident">script</span>);
663 <span class="comment">// Add the unconfirmed transactions first</span>
664 <span class="ident">result</span>.<span class="ident">extend</span>(
665 <span class="self">self</span>.<span class="ident">client</span>
666 .<span class="ident">get</span>(<span class="kw-2">&</span><span class="macro">format</span><span class="macro">!</span>(
667 <span class="string">"{}/scripthash/{}/txs/mempool"</span>,
668 <span class="self">self</span>.<span class="ident">url</span>, <span class="ident">scripthash</span>
670 .<span class="ident">send</span>()
671 .<span class="ident">await</span><span class="question-mark">?</span>
672 .<span class="ident">error_for_status</span>()<span class="question-mark">?</span>
673 .<span class="ident">json</span>::<span class="op"><</span><span class="ident">Vec</span><span class="op"><</span><span class="ident">EsploraGetHistory</span><span class="op">></span><span class="op">></span>()
674 .<span class="ident">await</span><span class="question-mark">?</span>
675 .<span class="ident">into_iter</span>()
676 .<span class="ident">map</span>(<span class="op">|</span><span class="ident">x</span><span class="op">|</span> <span class="ident">ELSGetHistoryRes</span> {
677 <span class="ident">tx_hash</span>: <span class="ident">x</span>.<span class="ident">txid</span>,
678 <span class="ident">height</span>: <span class="ident">x</span>.<span class="ident">status</span>.<span class="ident">block_height</span>.<span class="ident">unwrap_or</span>(<span class="number">0</span>) <span class="kw">as</span> <span class="ident">i32</span>,
682 <span class="macro">debug</span><span class="macro">!</span>(
683 <span class="string">"Found {} mempool txs for {} - {:?}"</span>,
684 <span class="ident">result</span>.<span class="ident">len</span>(),
685 <span class="ident">scripthash</span>,
686 <span class="ident">script</span>
689 <span class="comment">// Then go through all the pages of confirmed transactions</span>
690 <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">last_txid</span> <span class="op">=</span> <span class="ident">String</span>::<span class="ident">new</span>();
691 <span class="kw">loop</span> {
692 <span class="kw">let</span> <span class="ident">response</span> <span class="op">=</span> <span class="self">self</span>
693 .<span class="ident">client</span>
694 .<span class="ident">get</span>(<span class="kw-2">&</span><span class="macro">format</span><span class="macro">!</span>(
695 <span class="string">"{}/scripthash/{}/txs/chain/{}"</span>,
696 <span class="self">self</span>.<span class="ident">url</span>, <span class="ident">scripthash</span>, <span class="ident">last_txid</span>
698 .<span class="ident">send</span>()
699 .<span class="ident">await</span><span class="question-mark">?</span>
700 .<span class="ident">error_for_status</span>()<span class="question-mark">?</span>
701 .<span class="ident">json</span>::<span class="op"><</span><span class="ident">Vec</span><span class="op"><</span><span class="ident">EsploraGetHistory</span><span class="op">></span><span class="op">></span>()
702 .<span class="ident">await</span><span class="question-mark">?</span>;
703 <span class="kw">let</span> <span class="ident">len</span> <span class="op">=</span> <span class="ident">response</span>.<span class="ident">len</span>();
704 <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">elem</span>) <span class="op">=</span> <span class="ident">response</span>.<span class="ident">last</span>() {
705 <span class="ident">last_txid</span> <span class="op">=</span> <span class="ident">elem</span>.<span class="ident">txid</span>.<span class="ident">to_hex</span>();
708 <span class="macro">debug</span><span class="macro">!</span>(<span class="string">"... adding {} confirmed transactions"</span>, <span class="ident">len</span>);
710 <span class="ident">result</span>.<span class="ident">extend</span>(<span class="ident">response</span>.<span class="ident">into_iter</span>().<span class="ident">map</span>(<span class="op">|</span><span class="ident">x</span><span class="op">|</span> <span class="ident">ELSGetHistoryRes</span> {
711 <span class="ident">tx_hash</span>: <span class="ident">x</span>.<span class="ident">txid</span>,
712 <span class="ident">height</span>: <span class="ident">x</span>.<span class="ident">status</span>.<span class="ident">block_height</span>.<span class="ident">unwrap_or</span>(<span class="number">0</span>) <span class="kw">as</span> <span class="ident">i32</span>,
715 <span class="kw">if</span> <span class="ident">len</span> <span class="op"><</span> <span class="number">25</span> {
716 <span class="kw">break</span>;
720 <span class="prelude-val">Ok</span>(<span class="ident">result</span>)
723 <span class="ident">async</span> <span class="kw">fn</span> <span class="ident">_get_fee_estimates</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">HashMap</span><span class="op"><</span><span class="ident">String</span>, <span class="ident">f64</span><span class="op">></span>, <span class="ident">EsploraError</span><span class="op">></span> {
724 <span class="prelude-val">Ok</span>(<span class="self">self</span>
725 .<span class="ident">client</span>
726 .<span class="ident">get</span>(<span class="kw-2">&</span><span class="macro">format</span><span class="macro">!</span>(<span class="string">"{}/fee-estimates"</span>, <span class="self">self</span>.<span class="ident">url</span>,))
727 .<span class="ident">send</span>()
728 .<span class="ident">await</span><span class="question-mark">?</span>
729 .<span class="ident">error_for_status</span>()<span class="question-mark">?</span>
730 .<span class="ident">json</span>::<span class="op"><</span><span class="ident">HashMap</span><span class="op"><</span><span class="ident">String</span>, <span class="ident">f64</span><span class="op">></span><span class="op">></span>()
731 .<span class="ident">await</span><span class="question-mark">?</span>)
735 <span class="attribute">#[<span class="ident">maybe_async</span>]</span>
736 <span class="kw">impl</span> <span class="ident">ElectrumLikeSync</span> <span class="kw">for</span> <span class="ident">UrlClient</span> {
737 <span class="kw">fn</span> <span class="ident">els_batch_script_get_history</span><span class="op"><</span><span class="lifetime">'s</span>, <span class="ident">I</span>: <span class="ident">IntoIterator</span><span class="op"><</span><span class="ident">Item</span> <span class="op">=</span> <span class="kw-2">&</span><span class="lifetime">'s</span> <span class="ident">Script</span><span class="op">></span><span class="op">></span>(
738 <span class="kw-2">&</span><span class="self">self</span>,
739 <span class="ident">scripts</span>: <span class="ident">I</span>,
740 ) <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">Vec</span><span class="op"><</span><span class="ident">ELSGetHistoryRes</span><span class="op">></span><span class="op">></span>, <span class="ident">Error</span><span class="op">></span> {
741 <span class="kw">let</span> <span class="ident">future</span> <span class="op">=</span> <span class="ident">async</span> {
742 <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">results</span> <span class="op">=</span> <span class="macro">vec</span><span class="macro">!</span>[];
743 <span class="kw">for</span> <span class="ident">chunk</span> <span class="kw">in</span> <span class="ident">ChunksIterator</span>::<span class="ident">new</span>(<span class="ident">scripts</span>.<span class="ident">into_iter</span>(), <span class="self">self</span>.<span class="ident">concurrency</span> <span class="kw">as</span> <span class="ident">usize</span>) {
744 <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">futs</span> <span class="op">=</span> <span class="ident">FuturesOrdered</span>::<span class="ident">new</span>();
745 <span class="kw">for</span> <span class="ident">script</span> <span class="kw">in</span> <span class="ident">chunk</span> {
746 <span class="ident">futs</span>.<span class="ident">push</span>(<span class="self">self</span>.<span class="ident">_script_get_history</span>(<span class="kw-2">&</span><span class="ident">script</span>));
748 <span class="kw">let</span> <span class="ident">partial_results</span>: <span class="ident">Vec</span><span class="op"><</span><span class="ident">Vec</span><span class="op"><</span><span class="ident">ELSGetHistoryRes</span><span class="op">></span><span class="op">></span> <span class="op">=</span> <span class="ident">futs</span>.<span class="ident">try_collect</span>().<span class="ident">await</span><span class="question-mark">?</span>;
749 <span class="ident">results</span>.<span class="ident">extend</span>(<span class="ident">partial_results</span>);
751 <span class="prelude-val">Ok</span>(<span class="ident">stream</span>::<span class="ident">iter</span>(<span class="ident">results</span>).<span class="ident">collect</span>().<span class="ident">await</span>)
754 <span class="macro">await_or_block</span><span class="macro">!</span>(<span class="ident">future</span>)
757 <span class="kw">fn</span> <span class="ident">els_batch_transaction_get</span><span class="op"><</span><span class="lifetime">'s</span>, <span class="ident">I</span>: <span class="ident">IntoIterator</span><span class="op"><</span><span class="ident">Item</span> <span class="op">=</span> <span class="kw-2">&</span><span class="lifetime">'s</span> <span class="ident">Txid</span><span class="op">></span><span class="op">></span>(
758 <span class="kw-2">&</span><span class="self">self</span>,
759 <span class="ident">txids</span>: <span class="ident">I</span>,
760 ) <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">Transaction</span><span class="op">></span>, <span class="ident">Error</span><span class="op">></span> {
761 <span class="kw">let</span> <span class="ident">future</span> <span class="op">=</span> <span class="ident">async</span> {
762 <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">results</span> <span class="op">=</span> <span class="macro">vec</span><span class="macro">!</span>[];
763 <span class="kw">for</span> <span class="ident">chunk</span> <span class="kw">in</span> <span class="ident">ChunksIterator</span>::<span class="ident">new</span>(<span class="ident">txids</span>.<span class="ident">into_iter</span>(), <span class="self">self</span>.<span class="ident">concurrency</span> <span class="kw">as</span> <span class="ident">usize</span>) {
764 <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">futs</span> <span class="op">=</span> <span class="ident">FuturesOrdered</span>::<span class="ident">new</span>();
765 <span class="kw">for</span> <span class="ident">txid</span> <span class="kw">in</span> <span class="ident">chunk</span> {
766 <span class="ident">futs</span>.<span class="ident">push</span>(<span class="self">self</span>.<span class="ident">_get_tx_no_opt</span>(<span class="kw-2">&</span><span class="ident">txid</span>));
768 <span class="kw">let</span> <span class="ident">partial_results</span>: <span class="ident">Vec</span><span class="op"><</span><span class="ident">Transaction</span><span class="op">></span> <span class="op">=</span> <span class="ident">futs</span>.<span class="ident">try_collect</span>().<span class="ident">await</span><span class="question-mark">?</span>;
769 <span class="ident">results</span>.<span class="ident">extend</span>(<span class="ident">partial_results</span>);
771 <span class="prelude-val">Ok</span>(<span class="ident">stream</span>::<span class="ident">iter</span>(<span class="ident">results</span>).<span class="ident">collect</span>().<span class="ident">await</span>)
774 <span class="macro">await_or_block</span><span class="macro">!</span>(<span class="ident">future</span>)
777 <span class="kw">fn</span> <span class="ident">els_batch_block_header</span><span class="op"><</span><span class="ident">I</span>: <span class="ident">IntoIterator</span><span class="op"><</span><span class="ident">Item</span> <span class="op">=</span> <span class="ident">u32</span><span class="op">></span><span class="op">></span>(
778 <span class="kw-2">&</span><span class="self">self</span>,
779 <span class="ident">heights</span>: <span class="ident">I</span>,
780 ) <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">BlockHeader</span><span class="op">></span>, <span class="ident">Error</span><span class="op">></span> {
781 <span class="kw">let</span> <span class="ident">future</span> <span class="op">=</span> <span class="ident">async</span> {
782 <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">results</span> <span class="op">=</span> <span class="macro">vec</span><span class="macro">!</span>[];
783 <span class="kw">for</span> <span class="ident">chunk</span> <span class="kw">in</span> <span class="ident">ChunksIterator</span>::<span class="ident">new</span>(<span class="ident">heights</span>.<span class="ident">into_iter</span>(), <span class="self">self</span>.<span class="ident">concurrency</span> <span class="kw">as</span> <span class="ident">usize</span>) {
784 <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">futs</span> <span class="op">=</span> <span class="ident">FuturesOrdered</span>::<span class="ident">new</span>();
785 <span class="kw">for</span> <span class="ident">height</span> <span class="kw">in</span> <span class="ident">chunk</span> {
786 <span class="ident">futs</span>.<span class="ident">push</span>(<span class="self">self</span>.<span class="ident">_get_header</span>(<span class="ident">height</span>));
788 <span class="kw">let</span> <span class="ident">partial_results</span>: <span class="ident">Vec</span><span class="op"><</span><span class="ident">BlockHeader</span><span class="op">></span> <span class="op">=</span> <span class="ident">futs</span>.<span class="ident">try_collect</span>().<span class="ident">await</span><span class="question-mark">?</span>;
789 <span class="ident">results</span>.<span class="ident">extend</span>(<span class="ident">partial_results</span>);
791 <span class="prelude-val">Ok</span>(<span class="ident">stream</span>::<span class="ident">iter</span>(<span class="ident">results</span>).<span class="ident">collect</span>().<span class="ident">await</span>)
794 <span class="macro">await_or_block</span><span class="macro">!</span>(<span class="ident">future</span>)
798 <span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Deserialize</span>)]</span>
799 <span class="kw">struct</span> <span class="ident">EsploraGetHistoryStatus</span> {
800 <span class="ident">block_height</span>: <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">usize</span><span class="op">></span>,
803 <span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Deserialize</span>)]</span>
804 <span class="kw">struct</span> <span class="ident">EsploraGetHistory</span> {
805 <span class="ident">txid</span>: <span class="ident">Txid</span>,
806 <span class="ident">status</span>: <span class="ident">EsploraGetHistoryStatus</span>,
809 <span class="doccomment">/// Configuration for an [`EsploraBlockchain`]</span>
810 <span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Debug</span>, <span class="ident">serde</span>::<span class="ident">Deserialize</span>, <span class="ident">serde</span>::<span class="ident">Serialize</span>)]</span>
811 <span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">EsploraBlockchainConfig</span> {
812 <span class="doccomment">/// Base URL of the esplora service</span>
813 <span class="doccomment">///</span>
814 <span class="doccomment">/// eg. `https://blockstream.info/api/`</span>
815 <span class="kw">pub</span> <span class="ident">base_url</span>: <span class="ident">String</span>,
816 <span class="doccomment">/// Number of parallel requests sent to the esplora service (default: 4)</span>
817 <span class="kw">pub</span> <span class="ident">concurrency</span>: <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">u8</span><span class="op">></span>,
820 <span class="kw">impl</span> <span class="ident">ConfigurableBlockchain</span> <span class="kw">for</span> <span class="ident">EsploraBlockchain</span> {
821 <span class="kw">type</span> <span class="ident">Config</span> <span class="op">=</span> <span class="ident">EsploraBlockchainConfig</span>;
823 <span class="kw">fn</span> <span class="ident">from_config</span>(<span class="ident">config</span>: <span class="kw-2">&</span><span class="self">Self</span>::<span class="ident">Config</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">Error</span><span class="op">></span> {
824 <span class="prelude-val">Ok</span>(<span class="ident">EsploraBlockchain</span>::<span class="ident">new</span>(
825 <span class="ident">config</span>.<span class="ident">base_url</span>.<span class="ident">as_str</span>(),
826 <span class="ident">config</span>.<span class="ident">concurrency</span>,
831 <span class="doccomment">/// Errors that can happen during a sync with [`EsploraBlockchain`]</span>
832 <span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Debug</span>)]</span>
833 <span class="kw">pub</span> <span class="kw">enum</span> <span class="ident">EsploraError</span> {
834 <span class="doccomment">/// Error with the HTTP call</span>
835 <span class="ident">Reqwest</span>(<span class="ident">reqwest</span>::<span class="ident">Error</span>),
836 <span class="doccomment">/// Invalid number returned</span>
837 <span class="ident">Parsing</span>(<span class="ident">std</span>::<span class="ident">num</span>::<span class="ident">ParseIntError</span>),
838 <span class="doccomment">/// Invalid Bitcoin data returned</span>
839 <span class="ident">BitcoinEncoding</span>(<span class="ident">bitcoin</span>::<span class="ident">consensus</span>::<span class="ident">encode</span>::<span class="ident">Error</span>),
840 <span class="doccomment">/// Invalid Hex data returned</span>
841 <span class="ident">Hex</span>(<span class="ident">bitcoin</span>::<span class="ident">hashes</span>::<span class="ident">hex</span>::<span class="ident">Error</span>),
843 <span class="doccomment">/// Transaction not found</span>
844 <span class="ident">TransactionNotFound</span>(<span class="ident">Txid</span>),
845 <span class="doccomment">/// Header height not found</span>
846 <span class="ident">HeaderHeightNotFound</span>(<span class="ident">u32</span>),
847 <span class="doccomment">/// Header hash not found</span>
848 <span class="ident">HeaderHashNotFound</span>(<span class="ident">BlockHash</span>),
851 <span class="kw">impl</span> <span class="ident">fmt</span>::<span class="ident">Display</span> <span class="kw">for</span> <span class="ident">EsploraError</span> {
852 <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> {
853 <span class="macro">write</span><span class="macro">!</span>(<span class="ident">f</span>, <span class="string">"{:?}"</span>, <span class="self">self</span>)
857 <span class="kw">impl</span> <span class="ident">std</span>::<span class="ident">error</span>::<span class="ident">Error</span> <span class="kw">for</span> <span class="ident">EsploraError</span> {}
859 <span class="macro">impl_error</span><span class="macro">!</span>(<span class="ident">reqwest</span>::<span class="ident">Error</span>, <span class="ident">Reqwest</span>, <span class="ident">EsploraError</span>);
860 <span class="macro">impl_error</span><span class="macro">!</span>(<span class="ident">std</span>::<span class="ident">num</span>::<span class="ident">ParseIntError</span>, <span class="ident">Parsing</span>, <span class="ident">EsploraError</span>);
861 <span class="macro">impl_error</span><span class="macro">!</span>(<span class="ident">consensus</span>::<span class="ident">encode</span>::<span class="ident">Error</span>, <span class="ident">BitcoinEncoding</span>, <span class="ident">EsploraError</span>);
862 <span class="macro">impl_error</span><span class="macro">!</span>(<span class="ident">bitcoin</span>::<span class="ident">hashes</span>::<span class="ident">hex</span>::<span class="ident">Error</span>, <span class="ident">Hex</span>, <span class="ident">EsploraError</span>);
864 </section><section id="search" class="content hidden"></section><section class="footer"></section><script>window.rootPath = "../../../";window.currentCrate = "bdk";</script><script src="../../../main.js"></script><script src="../../../source-script.js"></script><script src="../../../source-files.js"></script><script defer src="../../../search-index.js"></script></body></html>
projects / bitcoindevkit.org / blob