<!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/batch.rs`."><title>batch.rs - source</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-6b053e98.ttf.woff2,FiraSans-Italic-81dc35de.woff2,FiraSans-Regular-0fe48ade.woff2,FiraSans-MediumItalic-ccf7e434.woff2,FiraSans-Medium-e1aa3f0a.woff2,SourceCodePro-Regular-8badfe75.ttf.woff2,SourceCodePro-Semibold-aa29a496.ttf.woff2".split(",").map(f=>`<link rel="preload" as="font" type="font/woff2"href="../../static.files/${f}">`).join(""))</script><link rel="stylesheet" href="../../static.files/normalize-9960930a.css"><link rel="stylesheet" href="../../static.files/rustdoc-b7b9f40b.css"><meta name="rustdoc-vars" data-root-path="../../" data-static-root-path="../../static.files/" data-current-crate="scrapfly_sdk" data-themes="" data-resource-suffix="" data-rustdoc-version="1.95.0 (59807616e 2026-04-14)" data-channel="1.95.0" data-search-js="search-63369b7b.js" data-stringdex-js="stringdex-b897f86f.js" data-settings-js="settings-170eb4bf.js" ><script src="../../static.files/storage-41dd4d93.js"></script><script defer src="../../static.files/src-script-813739b1.js"></script><script defer src="../../src-files.js"></script><script defer src="../../static.files/main-5013f961.js"></script><noscript><link rel="stylesheet" href="../../static.files/noscript-f7c3ffd8.css"></noscript><link rel="alternate icon" type="image/png" href="../../static.files/favicon-32x32-eab170b8.png"><link rel="icon" type="image/svg+xml" href="../../static.files/favicon-044be391.svg"></head><body class="rustdoc src"><a class="skip-main-content" href="#main-content">Skip to main content</a><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="src-sidebar-title"><h2>Files</h2></div></nav><div class="sidebar-resizer" title="Drag to resize sidebar"></div><main><section id="main-content" class="content" tabindex="-1"><div class="main-heading"><h1><div class="sub-heading">scrapfly_sdk/</div>batch.rs</h1><rustdoc-toolbar></rustdoc-toolbar></div><div class="example-wrap digits-3"><pre class="rust"><code><a href=#1 id=1 data-nosnippet>1</a><span class="doccomment">//! Streaming multipart/mixed parser for POST /scrape/batch.
<a href=#2 id=2 data-nosnippet>2</a>//!
<a href=#3 id=3 data-nosnippet>3</a>//! The API emits one part per scrape as each completes. This module
<a href=#4 id=4 data-nosnippet>4</a>//! reads the response body as a stream of `Bytes` chunks and yields
<a href=#5 id=5 data-nosnippet>5</a>//! `(headers, body)` per part as they arrive.
<a href=#6 id=6 data-nosnippet>6</a>//!
<a href=#7 id=7 data-nosnippet>7</a>//! Zero new dependencies — only `reqwest`, `bytes`, and `futures-util`
<a href=#8 id=8 data-nosnippet>8</a>//! that are already in `Cargo.toml`.
<a href=#9 id=9 data-nosnippet>9</a>
<a href=#10 id=10 data-nosnippet>10</a></span><span class="kw">use </span>std::collections::HashMap;
<a href=#11 id=11 data-nosnippet>11</a><span class="kw">use </span>std::pin::Pin;
<a href=#12 id=12 data-nosnippet>12</a><span class="kw">use </span>std::task::{Context, Poll};
<a href=#13 id=13 data-nosnippet>13</a>
<a href=#14 id=14 data-nosnippet>14</a><span class="kw">use </span>bytes::{Bytes, BytesMut};
<a href=#15 id=15 data-nosnippet>15</a><span class="kw">use </span>futures_util::stream::Stream;
<a href=#16 id=16 data-nosnippet>16</a>
<a href=#17 id=17 data-nosnippet>17</a><span class="kw">use </span><span class="kw">crate</span>::error::ScrapflyError;
<a href=#18 id=18 data-nosnippet>18</a><span class="kw">use </span><span class="kw">crate</span>::result::scrape::ScrapeResult;
<a href=#19 id=19 data-nosnippet>19</a>
<a href=#20 id=20 data-nosnippet>20</a><span class="kw">const </span>CRLF: <span class="kw-2">&</span>[u8] = <span class="string">b"\r\n"</span>;
<a href=#21 id=21 data-nosnippet>21</a><span class="kw">const </span>DOUBLE_CRLF: <span class="kw-2">&</span>[u8] = <span class="string">b"\r\n\r\n"</span>;
<a href=#22 id=22 data-nosnippet>22</a>
<a href=#23 id=23 data-nosnippet>23</a><span class="doccomment">/// One multipart part: header map (lowercased keys) plus body bytes.
<a href=#24 id=24 data-nosnippet>24</a></span><span class="attr">#[derive(Debug)]
<a href=#25 id=25 data-nosnippet>25</a></span><span class="kw">pub struct </span>BatchPart {
<a href=#26 id=26 data-nosnippet>26</a> <span class="doccomment">/// Per-part headers, lowercased. `content-type` is always set;
<a href=#27 id=27 data-nosnippet>27</a> /// `x-scrapfly-correlation-id` and `x-scrapfly-scrape-status`
<a href=#28 id=28 data-nosnippet>28</a> /// are set by the server.
<a href=#29 id=29 data-nosnippet>29</a> </span><span class="kw">pub </span>headers: HashMap<String, String>,
<a href=#30 id=30 data-nosnippet>30</a>
<a href=#31 id=31 data-nosnippet>31</a> <span class="doccomment">/// Part body bytes (not decoded).
<a href=#32 id=32 data-nosnippet>32</a> </span><span class="kw">pub </span>body: Bytes,
<a href=#33 id=33 data-nosnippet>33</a>}
<a href=#34 id=34 data-nosnippet>34</a>
<a href=#35 id=35 data-nosnippet>35</a><span class="doccomment">/// A proxified batch part surfaced as a native Response-like value.
<a href=#36 id=36 data-nosnippet>36</a>/// The part body is the raw upstream response (HTML, JSON, binary,
<a href=#37 id=37 data-nosnippet>37</a>/// etc.) — not a JSON envelope. `reqwest::Response` is tied to a
<a href=#38 id=38 data-nosnippet>38</a>/// live connection so we cannot re-synthesize one from bytes; this
<a href=#39 id=39 data-nosnippet>39</a>/// struct carries the same fields a caller needs.
<a href=#40 id=40 data-nosnippet>40</a></span><span class="attr">#[derive(Debug)]
<a href=#41 id=41 data-nosnippet>41</a></span><span class="kw">pub struct </span>BatchProxifiedResponse {
<a href=#42 id=42 data-nosnippet>42</a> <span class="doccomment">/// Upstream HTTP status code restored from X-Scrapfly-Scrape-Status.
<a href=#43 id=43 data-nosnippet>43</a> </span><span class="kw">pub </span>status: u16,
<a href=#44 id=44 data-nosnippet>44</a>
<a href=#45 id=45 data-nosnippet>45</a> <span class="doccomment">/// Response headers: upstream headers (originally prefixed with
<a href=#46 id=46 data-nosnippet>46</a> /// X-Scrapfly-Upstream- on the wire, stripped here) PLUS
<a href=#47 id=47 data-nosnippet>47</a> /// Scrapfly metadata (X-Scrapfly-Log, X-Scrapfly-Content-Format,
<a href=#48 id=48 data-nosnippet>48</a> /// X-Scrapfly-Log-Uuid). `Content-Type` is the upstream's
<a href=#49 id=49 data-nosnippet>49</a> /// content-type.
<a href=#50 id=50 data-nosnippet>50</a> </span><span class="kw">pub </span>headers: HashMap<String, String>,
<a href=#51 id=51 data-nosnippet>51</a>
<a href=#52 id=52 data-nosnippet>52</a> <span class="doccomment">/// Raw upstream body bytes.
<a href=#53 id=53 data-nosnippet>53</a> </span><span class="kw">pub </span>body: Bytes,
<a href=#54 id=54 data-nosnippet>54</a>}
<a href=#55 id=55 data-nosnippet>55</a>
<a href=#56 id=56 data-nosnippet>56</a><span class="kw">impl </span>BatchProxifiedResponse {
<a href=#57 id=57 data-nosnippet>57</a> <span class="doccomment">/// Decode the body as UTF-8 text (mirrors reqwest::Response::text()).
<a href=#58 id=58 data-nosnippet>58</a> </span><span class="kw">pub fn </span>text(<span class="kw-2">&</span><span class="self">self</span>) -> String {
<a href=#59 id=59 data-nosnippet>59</a> String::from_utf8_lossy(<span class="kw-2">&</span><span class="self">self</span>.body).into_owned()
<a href=#60 id=60 data-nosnippet>60</a> }
<a href=#61 id=61 data-nosnippet>61</a>
<a href=#62 id=62 data-nosnippet>62</a> <span class="doccomment">/// Convenience accessor for the response content-type.
<a href=#63 id=63 data-nosnippet>63</a> </span><span class="kw">pub fn </span>content_type(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><<span class="kw-2">&</span>str> {
<a href=#64 id=64 data-nosnippet>64</a> <span class="self">self</span>.headers.get(<span class="string">"content-type"</span>).map(String::as_str)
<a href=#65 id=65 data-nosnippet>65</a> }
<a href=#66 id=66 data-nosnippet>66</a>
<a href=#67 id=67 data-nosnippet>67</a> <span class="doccomment">/// Scrapfly log UUID (X-Scrapfly-Log if present, else X-Scrapfly-Log-Uuid).
<a href=#68 id=68 data-nosnippet>68</a> </span><span class="kw">pub fn </span>scrapfly_log(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><<span class="kw-2">&</span>str> {
<a href=#69 id=69 data-nosnippet>69</a> <span class="self">self</span>.headers
<a href=#70 id=70 data-nosnippet>70</a> .get(<span class="string">"x-scrapfly-log"</span>)
<a href=#71 id=71 data-nosnippet>71</a> .or_else(|| <span class="self">self</span>.headers.get(<span class="string">"x-scrapfly-log-uuid"</span>))
<a href=#72 id=72 data-nosnippet>72</a> .map(String::as_str)
<a href=#73 id=73 data-nosnippet>73</a> }
<a href=#74 id=74 data-nosnippet>74</a>}
<a href=#75 id=75 data-nosnippet>75</a>
<a href=#76 id=76 data-nosnippet>76</a><span class="doccomment">/// Wire format for the per-part body. JSON is the default;
<a href=#77 id=77 data-nosnippet>77</a>/// Msgpack matches the Scrapfly API's msgpack negotiation.
<a href=#78 id=78 data-nosnippet>78</a></span><span class="attr">#[derive(Debug, Clone, Copy, PartialEq, Eq, Default)]
<a href=#79 id=79 data-nosnippet>79</a></span><span class="kw">pub enum </span>BatchFormat {
<a href=#80 id=80 data-nosnippet>80</a> <span class="doccomment">/// application/json (default).
<a href=#81 id=81 data-nosnippet>81</a> </span><span class="attr">#[default]
<a href=#82 id=82 data-nosnippet>82</a> </span>Json,
<a href=#83 id=83 data-nosnippet>83</a> <span class="doccomment">/// application/msgpack — smaller wire payload.
<a href=#84 id=84 data-nosnippet>84</a> </span>Msgpack,
<a href=#85 id=85 data-nosnippet>85</a>}
<a href=#86 id=86 data-nosnippet>86</a>
<a href=#87 id=87 data-nosnippet>87</a><span class="kw">impl </span>BatchFormat {
<a href=#88 id=88 data-nosnippet>88</a> <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>accept_header(<span class="self">self</span>) -> <span class="kw-2">&</span><span class="lifetime">'static </span>str {
<a href=#89 id=89 data-nosnippet>89</a> <span class="kw">match </span><span class="self">self </span>{
<a href=#90 id=90 data-nosnippet>90</a> BatchFormat::Json => <span class="string">"application/json"</span>,
<a href=#91 id=91 data-nosnippet>91</a> BatchFormat::Msgpack => <span class="string">"application/msgpack"</span>,
<a href=#92 id=92 data-nosnippet>92</a> }
<a href=#93 id=93 data-nosnippet>93</a> }
<a href=#94 id=94 data-nosnippet>94</a>}
<a href=#95 id=95 data-nosnippet>95</a>
<a href=#96 id=96 data-nosnippet>96</a><span class="doccomment">/// Options for `Client::scrape_batch_with_options`.
<a href=#97 id=97 data-nosnippet>97</a></span><span class="attr">#[derive(Debug, Clone, Default)]
<a href=#98 id=98 data-nosnippet>98</a></span><span class="kw">pub struct </span>BatchOptions {
<a href=#99 id=99 data-nosnippet>99</a> <span class="doccomment">/// Wire format for per-part bodies. Defaults to JSON.
<a href=#100 id=100 data-nosnippet>100</a> </span><span class="kw">pub </span>format: BatchFormat,
<a href=#101 id=101 data-nosnippet>101</a>}
<a href=#102 id=102 data-nosnippet>102</a>
<a href=#103 id=103 data-nosnippet>103</a><span class="doccomment">/// Per-part outcome yielded by `Client::scrape_batch`.
<a href=#104 id=104 data-nosnippet>104</a>///
<a href=#105 id=105 data-nosnippet>105</a>/// NOTE on `clippy::large_enum_variant`: the `Scrape(ScrapeResult)` variant is
<a href=#106 id=106 data-nosnippet>106</a>/// ~528 bytes vs. ~120 bytes for the others. Boxing to shrink it would be a
<a href=#107 id=107 data-nosnippet>107</a>/// breaking change to v0.2.x consumers pattern-matching on `BatchOutcome::Scrape`.
<a href=#108 id=108 data-nosnippet>108</a>/// We accept the unbalanced size — each enum instance is ephemeral (yielded
<a href=#109 id=109 data-nosnippet>109</a>/// once per batch part via a stream) and count tops out at the batch size.
<a href=#110 id=110 data-nosnippet>110</a></span><span class="attr">#[allow(clippy::large_enum_variant)]
<a href=#111 id=111 data-nosnippet>111</a>#[derive(Debug)]
<a href=#112 id=112 data-nosnippet>112</a></span><span class="kw">pub enum </span>BatchOutcome {
<a href=#113 id=113 data-nosnippet>113</a> <span class="doccomment">/// Standard per-part scrape result (JSON envelope decoded).
<a href=#114 id=114 data-nosnippet>114</a> </span>Scrape(ScrapeResult),
<a href=#115 id=115 data-nosnippet>115</a>
<a href=#116 id=116 data-nosnippet>116</a> <span class="doccomment">/// Proxified part: the upstream's raw response, with status +
<a href=#117 id=117 data-nosnippet>117</a> /// headers + body restored from the multipart part metadata.
<a href=#118 id=118 data-nosnippet>118</a> /// Surfaces when the originating `ScrapeConfig.proxified_response
<a href=#119 id=119 data-nosnippet>119</a> /// == true`. Matches the single-scrape `scrape_proxified()`
<a href=#120 id=120 data-nosnippet>120</a> /// return shape as closely as we can without a live connection.
<a href=#121 id=121 data-nosnippet>121</a> </span>Proxified(BatchProxifiedResponse),
<a href=#122 id=122 data-nosnippet>122</a>
<a href=#123 id=123 data-nosnippet>123</a> <span class="doccomment">/// Per-part error (decode failure, per-scrape upstream error, etc.).
<a href=#124 id=124 data-nosnippet>124</a> </span><span class="prelude-val">Err</span>(ScrapflyError),
<a href=#125 id=125 data-nosnippet>125</a>}
<a href=#126 id=126 data-nosnippet>126</a>
<a href=#127 id=127 data-nosnippet>127</a><span class="kw">fn </span>find_subslice(buf: <span class="kw-2">&</span>[u8], needle: <span class="kw-2">&</span>[u8]) -> <span class="prelude-ty">Option</span><usize> {
<a href=#128 id=128 data-nosnippet>128</a> <span class="kw">if </span>needle.is_empty() {
<a href=#129 id=129 data-nosnippet>129</a> <span class="kw">return </span><span class="prelude-val">Some</span>(<span class="number">0</span>);
<a href=#130 id=130 data-nosnippet>130</a> }
<a href=#131 id=131 data-nosnippet>131</a>
<a href=#132 id=132 data-nosnippet>132</a> <span class="kw">if </span>buf.len() < needle.len() {
<a href=#133 id=133 data-nosnippet>133</a> <span class="kw">return </span><span class="prelude-val">None</span>;
<a href=#134 id=134 data-nosnippet>134</a> }
<a href=#135 id=135 data-nosnippet>135</a>
<a href=#136 id=136 data-nosnippet>136</a> (<span class="number">0</span>..=buf.len() - needle.len()).find(|<span class="kw-2">&</span>i| <span class="kw-2">&</span>buf[i..i + needle.len()] == needle)
<a href=#137 id=137 data-nosnippet>137</a>}
<a href=#138 id=138 data-nosnippet>138</a>
<a href=#139 id=139 data-nosnippet>139</a><span class="kw">fn </span>parse_content_type(value: <span class="kw-2">&</span>str) -> (String, HashMap<String, String>) {
<a href=#140 id=140 data-nosnippet>140</a> <span class="kw">if let </span><span class="prelude-val">Some</span>(idx) = value.find(<span class="string">';'</span>) {
<a href=#141 id=141 data-nosnippet>141</a> <span class="kw">let </span>mime = value[..idx].trim().to_lowercase();
<a href=#142 id=142 data-nosnippet>142</a> <span class="kw">let </span><span class="kw-2">mut </span>params = HashMap::new();
<a href=#143 id=143 data-nosnippet>143</a>
<a href=#144 id=144 data-nosnippet>144</a> <span class="kw">for </span>piece <span class="kw">in </span>value[idx + <span class="number">1</span>..].split(<span class="string">';'</span>) {
<a href=#145 id=145 data-nosnippet>145</a> <span class="kw">if let </span><span class="prelude-val">Some</span>(eq) = piece.find(<span class="string">'='</span>) {
<a href=#146 id=146 data-nosnippet>146</a> <span class="kw">let </span>k = piece[..eq].trim().to_lowercase();
<a href=#147 id=147 data-nosnippet>147</a> <span class="kw">let </span><span class="kw-2">mut </span>v = piece[eq + <span class="number">1</span>..].trim().to_string();
<a href=#148 id=148 data-nosnippet>148</a>
<a href=#149 id=149 data-nosnippet>149</a> <span class="kw">if </span>v.starts_with(<span class="string">'"'</span>) && v.ends_with(<span class="string">'"'</span>) && v.len() >= <span class="number">2 </span>{
<a href=#150 id=150 data-nosnippet>150</a> v = v[<span class="number">1</span>..v.len() - <span class="number">1</span>].to_string();
<a href=#151 id=151 data-nosnippet>151</a> }
<a href=#152 id=152 data-nosnippet>152</a>
<a href=#153 id=153 data-nosnippet>153</a> params.insert(k, v);
<a href=#154 id=154 data-nosnippet>154</a> }
<a href=#155 id=155 data-nosnippet>155</a> }
<a href=#156 id=156 data-nosnippet>156</a>
<a href=#157 id=157 data-nosnippet>157</a> (mime, params)
<a href=#158 id=158 data-nosnippet>158</a> } <span class="kw">else </span>{
<a href=#159 id=159 data-nosnippet>159</a> (value.trim().to_lowercase(), HashMap::new())
<a href=#160 id=160 data-nosnippet>160</a> }
<a href=#161 id=161 data-nosnippet>161</a>}
<a href=#162 id=162 data-nosnippet>162</a>
<a href=#163 id=163 data-nosnippet>163</a><span class="doccomment">/// Stream adapter: wraps a reqwest bytes stream and yields one
<a href=#164 id=164 data-nosnippet>164</a>/// `BatchPart` per multipart section as the body arrives.
<a href=#165 id=165 data-nosnippet>165</a></span><span class="kw">pub struct </span>BatchPartStream<S> {
<a href=#166 id=166 data-nosnippet>166</a> inner: S,
<a href=#167 id=167 data-nosnippet>167</a> boundary_line: Vec<u8>,
<a href=#168 id=168 data-nosnippet>168</a> boundary_sep: Vec<u8>,
<a href=#169 id=169 data-nosnippet>169</a> buf: BytesMut,
<a href=#170 id=170 data-nosnippet>170</a> state: State,
<a href=#171 id=171 data-nosnippet>171</a> done: bool,
<a href=#172 id=172 data-nosnippet>172</a>}
<a href=#173 id=173 data-nosnippet>173</a>
<a href=#174 id=174 data-nosnippet>174</a><span class="kw">enum </span>State {
<a href=#175 id=175 data-nosnippet>175</a> <span class="doccomment">/// Haven't found the first --boundary yet; discard anything before it.
<a href=#176 id=176 data-nosnippet>176</a> </span>FindFirstBoundary,
<a href=#177 id=177 data-nosnippet>177</a> <span class="doccomment">/// Just consumed a --boundary; next is either CRLF or "--" (terminator).
<a href=#178 id=178 data-nosnippet>178</a> </span>BoundarySuffix,
<a href=#179 id=179 data-nosnippet>179</a> <span class="doccomment">/// Reading part headers up to CRLF CRLF.
<a href=#180 id=180 data-nosnippet>180</a> </span>Headers,
<a href=#181 id=181 data-nosnippet>181</a> <span class="doccomment">/// Reading part body either by Content-Length or up to next boundary.
<a href=#182 id=182 data-nosnippet>182</a> </span>Body {
<a href=#183 id=183 data-nosnippet>183</a> headers: HashMap<String, String>,
<a href=#184 id=184 data-nosnippet>184</a> content_length: <span class="prelude-ty">Option</span><usize>,
<a href=#185 id=185 data-nosnippet>185</a> },
<a href=#186 id=186 data-nosnippet>186</a> <span class="doccomment">/// Body already yielded; scan for the trailing "\r\n--<boundary>"
<a href=#187 id=187 data-nosnippet>187</a> /// and discard it before transitioning to BoundarySuffix. This
<a href=#188 id=188 data-nosnippet>188</a> /// lets Content-Length framing yield a part the instant its body
<a href=#189 id=189 data-nosnippet>189</a> /// bytes arrive, without waiting for the next part's boundary.
<a href=#190 id=190 data-nosnippet>190</a> </span>ConsumeSeparator,
<a href=#191 id=191 data-nosnippet>191</a> <span class="doccomment">/// Stream is done; no more parts.
<a href=#192 id=192 data-nosnippet>192</a> </span>Done,
<a href=#193 id=193 data-nosnippet>193</a>}
<a href=#194 id=194 data-nosnippet>194</a>
<a href=#195 id=195 data-nosnippet>195</a><span class="kw">impl</span><S> BatchPartStream<S>
<a href=#196 id=196 data-nosnippet>196</a><span class="kw">where
<a href=#197 id=197 data-nosnippet>197</a> </span>S: Stream<Item = <span class="prelude-ty">Result</span><Bytes, reqwest::Error>> + Unpin,
<a href=#198 id=198 data-nosnippet>198</a>{
<a href=#199 id=199 data-nosnippet>199</a> <span class="doccomment">/// Construct a part stream wrapping `stream` with the given
<a href=#200 id=200 data-nosnippet>200</a> /// `boundary` (without the leading `--`).
<a href=#201 id=201 data-nosnippet>201</a> </span><span class="kw">pub fn </span>new(stream: S, boundary: <span class="kw-2">&</span>str) -> <span class="self">Self </span>{
<a href=#202 id=202 data-nosnippet>202</a> <span class="kw">let </span>boundary_line = <span class="macro">format!</span>(<span class="string">"--{}"</span>, boundary).into_bytes();
<a href=#203 id=203 data-nosnippet>203</a> <span class="kw">let </span>boundary_sep = <span class="macro">format!</span>(<span class="string">"\r\n--{}"</span>, boundary).into_bytes();
<a href=#204 id=204 data-nosnippet>204</a>
<a href=#205 id=205 data-nosnippet>205</a> <span class="self">Self </span>{
<a href=#206 id=206 data-nosnippet>206</a> inner: stream,
<a href=#207 id=207 data-nosnippet>207</a> boundary_line,
<a href=#208 id=208 data-nosnippet>208</a> boundary_sep,
<a href=#209 id=209 data-nosnippet>209</a> buf: BytesMut::new(),
<a href=#210 id=210 data-nosnippet>210</a> state: State::FindFirstBoundary,
<a href=#211 id=211 data-nosnippet>211</a> done: <span class="bool-val">false</span>,
<a href=#212 id=212 data-nosnippet>212</a> }
<a href=#213 id=213 data-nosnippet>213</a> }
<a href=#214 id=214 data-nosnippet>214</a>}
<a href=#215 id=215 data-nosnippet>215</a>
<a href=#216 id=216 data-nosnippet>216</a><span class="kw">impl</span><S> Stream <span class="kw">for </span>BatchPartStream<S>
<a href=#217 id=217 data-nosnippet>217</a><span class="kw">where
<a href=#218 id=218 data-nosnippet>218</a> </span>S: Stream<Item = <span class="prelude-ty">Result</span><Bytes, reqwest::Error>> + Unpin,
<a href=#219 id=219 data-nosnippet>219</a>{
<a href=#220 id=220 data-nosnippet>220</a> <span class="kw">type </span>Item = <span class="prelude-ty">Result</span><BatchPart, ScrapflyError>;
<a href=#221 id=221 data-nosnippet>221</a>
<a href=#222 id=222 data-nosnippet>222</a> <span class="kw">fn </span>poll_next(<span class="kw-2">mut </span><span class="self">self</span>: Pin<<span class="kw-2">&mut </span><span class="self">Self</span>>, cx: <span class="kw-2">&mut </span>Context<<span class="lifetime">'_</span>>) -> Poll<<span class="prelude-ty">Option</span><<span class="self">Self</span>::Item>> {
<a href=#223 id=223 data-nosnippet>223</a> <span class="kw">loop </span>{
<a href=#224 id=224 data-nosnippet>224</a> <span class="comment">// Run the state machine on the current buffer.
<a href=#225 id=225 data-nosnippet>225</a> </span><span class="kw">let </span>this = <span class="kw-2">&mut *</span><span class="self">self</span>;
<a href=#226 id=226 data-nosnippet>226</a>
<a href=#227 id=227 data-nosnippet>227</a> <span class="kw">match </span><span class="kw-2">&mut </span>this.state {
<a href=#228 id=228 data-nosnippet>228</a> State::Done => <span class="kw">return </span>Poll::Ready(<span class="prelude-val">None</span>),
<a href=#229 id=229 data-nosnippet>229</a>
<a href=#230 id=230 data-nosnippet>230</a> State::FindFirstBoundary => {
<a href=#231 id=231 data-nosnippet>231</a> <span class="kw">if let </span><span class="prelude-val">Some</span>(idx) = find_subslice(<span class="kw-2">&</span>this.buf, <span class="kw-2">&</span>this.boundary_line) {
<a href=#232 id=232 data-nosnippet>232</a> <span class="kw">let _ </span>= this.buf.split_to(idx + this.boundary_line.len());
<a href=#233 id=233 data-nosnippet>233</a> this.state = State::BoundarySuffix;
<a href=#234 id=234 data-nosnippet>234</a> <span class="kw">continue</span>;
<a href=#235 id=235 data-nosnippet>235</a> }
<a href=#236 id=236 data-nosnippet>236</a> }
<a href=#237 id=237 data-nosnippet>237</a>
<a href=#238 id=238 data-nosnippet>238</a> State::BoundarySuffix => {
<a href=#239 id=239 data-nosnippet>239</a> <span class="kw">if </span>this.buf.len() < <span class="number">2 </span>{
<a href=#240 id=240 data-nosnippet>240</a> <span class="comment">// need more
<a href=#241 id=241 data-nosnippet>241</a> </span>} <span class="kw">else </span>{
<a href=#242 id=242 data-nosnippet>242</a> <span class="kw">let </span>head = <span class="kw-2">&</span>this.buf[..<span class="number">2</span>];
<a href=#243 id=243 data-nosnippet>243</a>
<a href=#244 id=244 data-nosnippet>244</a> <span class="kw">if </span>head == <span class="string">b"--" </span>{
<a href=#245 id=245 data-nosnippet>245</a> this.state = State::Done;
<a href=#246 id=246 data-nosnippet>246</a>
<a href=#247 id=247 data-nosnippet>247</a> <span class="kw">return </span>Poll::Ready(<span class="prelude-val">None</span>);
<a href=#248 id=248 data-nosnippet>248</a> }
<a href=#249 id=249 data-nosnippet>249</a>
<a href=#250 id=250 data-nosnippet>250</a> <span class="kw">if </span>head == CRLF {
<a href=#251 id=251 data-nosnippet>251</a> <span class="kw">let _ </span>= this.buf.split_to(<span class="number">2</span>);
<a href=#252 id=252 data-nosnippet>252</a> this.state = State::Headers;
<a href=#253 id=253 data-nosnippet>253</a> <span class="kw">continue</span>;
<a href=#254 id=254 data-nosnippet>254</a> }
<a href=#255 id=255 data-nosnippet>255</a>
<a href=#256 id=256 data-nosnippet>256</a> <span class="comment">// Tolerate LF-only.
<a href=#257 id=257 data-nosnippet>257</a> </span><span class="kw">if </span>this.buf[<span class="number">0</span>] == <span class="string">b'\n' </span>{
<a href=#258 id=258 data-nosnippet>258</a> <span class="kw">let _ </span>= this.buf.split_to(<span class="number">1</span>);
<a href=#259 id=259 data-nosnippet>259</a> this.state = State::Headers;
<a href=#260 id=260 data-nosnippet>260</a> <span class="kw">continue</span>;
<a href=#261 id=261 data-nosnippet>261</a> }
<a href=#262 id=262 data-nosnippet>262</a>
<a href=#263 id=263 data-nosnippet>263</a> this.state = State::Done;
<a href=#264 id=264 data-nosnippet>264</a>
<a href=#265 id=265 data-nosnippet>265</a> <span class="kw">return </span>Poll::Ready(<span class="prelude-val">None</span>);
<a href=#266 id=266 data-nosnippet>266</a> }
<a href=#267 id=267 data-nosnippet>267</a> }
<a href=#268 id=268 data-nosnippet>268</a>
<a href=#269 id=269 data-nosnippet>269</a> State::Headers => {
<a href=#270 id=270 data-nosnippet>270</a> <span class="kw">if let </span><span class="prelude-val">Some</span>(idx) = find_subslice(<span class="kw-2">&</span>this.buf, DOUBLE_CRLF) {
<a href=#271 id=271 data-nosnippet>271</a> <span class="kw">let </span>header_block = this.buf.split_to(idx).freeze();
<a href=#272 id=272 data-nosnippet>272</a> <span class="kw">let _ </span>= this.buf.split_to(DOUBLE_CRLF.len());
<a href=#273 id=273 data-nosnippet>273</a>
<a href=#274 id=274 data-nosnippet>274</a> <span class="kw">let </span><span class="kw-2">mut </span>headers: HashMap<String, String> = HashMap::new();
<a href=#275 id=275 data-nosnippet>275</a>
<a href=#276 id=276 data-nosnippet>276</a> <span class="kw">let </span>bytes_ref: <span class="kw-2">&</span>[u8] = header_block.as_ref();
<a href=#277 id=277 data-nosnippet>277</a>
<a href=#278 id=278 data-nosnippet>278</a> <span class="kw">for </span>line <span class="kw">in </span>bytes_ref.split(|b: <span class="kw-2">&</span>u8| <span class="kw-2">*</span>b == <span class="string">b'\n'</span>) {
<a href=#279 id=279 data-nosnippet>279</a> <span class="kw">let </span>line: <span class="kw-2">&</span>[u8] = <span class="kw">if let </span><span class="prelude-val">Some</span>(l) = line.strip_suffix(<span class="kw-2">&</span>[<span class="string">b'\r'</span>][..]) {
<a href=#280 id=280 data-nosnippet>280</a> l
<a href=#281 id=281 data-nosnippet>281</a> } <span class="kw">else </span>{
<a href=#282 id=282 data-nosnippet>282</a> line
<a href=#283 id=283 data-nosnippet>283</a> };
<a href=#284 id=284 data-nosnippet>284</a>
<a href=#285 id=285 data-nosnippet>285</a> <span class="kw">if </span>line.is_empty() {
<a href=#286 id=286 data-nosnippet>286</a> <span class="kw">continue</span>;
<a href=#287 id=287 data-nosnippet>287</a> }
<a href=#288 id=288 data-nosnippet>288</a>
<a href=#289 id=289 data-nosnippet>289</a> <span class="kw">let </span>s = <span class="kw">match </span>std::str::from_utf8(line) {
<a href=#290 id=290 data-nosnippet>290</a> <span class="prelude-val">Ok</span>(s) => s,
<a href=#291 id=291 data-nosnippet>291</a> <span class="prelude-val">Err</span>(<span class="kw">_</span>) => <span class="kw">continue</span>,
<a href=#292 id=292 data-nosnippet>292</a> };
<a href=#293 id=293 data-nosnippet>293</a>
<a href=#294 id=294 data-nosnippet>294</a> <span class="kw">if let </span><span class="prelude-val">Some</span>(colon) = s.find(<span class="string">':'</span>) {
<a href=#295 id=295 data-nosnippet>295</a> <span class="kw">let </span>k = s[..colon].trim().to_lowercase();
<a href=#296 id=296 data-nosnippet>296</a> <span class="kw">let </span>v = s[colon + <span class="number">1</span>..].trim().to_string();
<a href=#297 id=297 data-nosnippet>297</a> headers.insert(k, v);
<a href=#298 id=298 data-nosnippet>298</a> }
<a href=#299 id=299 data-nosnippet>299</a> }
<a href=#300 id=300 data-nosnippet>300</a>
<a href=#301 id=301 data-nosnippet>301</a> <span class="kw">let </span>content_length = headers
<a href=#302 id=302 data-nosnippet>302</a> .get(<span class="string">"content-length"</span>)
<a href=#303 id=303 data-nosnippet>303</a> .and_then(|v| v.parse::<usize>().ok());
<a href=#304 id=304 data-nosnippet>304</a>
<a href=#305 id=305 data-nosnippet>305</a> this.state = State::Body {
<a href=#306 id=306 data-nosnippet>306</a> headers,
<a href=#307 id=307 data-nosnippet>307</a> content_length,
<a href=#308 id=308 data-nosnippet>308</a> };
<a href=#309 id=309 data-nosnippet>309</a> <span class="kw">continue</span>;
<a href=#310 id=310 data-nosnippet>310</a> }
<a href=#311 id=311 data-nosnippet>311</a> }
<a href=#312 id=312 data-nosnippet>312</a>
<a href=#313 id=313 data-nosnippet>313</a> State::Body {
<a href=#314 id=314 data-nosnippet>314</a> headers,
<a href=#315 id=315 data-nosnippet>315</a> content_length,
<a href=#316 id=316 data-nosnippet>316</a> } => {
<a href=#317 id=317 data-nosnippet>317</a> <span class="comment">// With Content-Length, yield the part the instant
<a href=#318 id=318 data-nosnippet>318</a> // its body bytes arrive. Consuming the trailing
<a href=#319 id=319 data-nosnippet>319</a> // "\r\n--<boundary>" separator is deferred to the
<a href=#320 id=320 data-nosnippet>320</a> // next poll via State::ConsumeSeparator — that
<a href=#321 id=321 data-nosnippet>321</a> // way the caller observes streaming order even
<a href=#322 id=322 data-nosnippet>322</a> // when the next part is slow to land on the wire.
<a href=#323 id=323 data-nosnippet>323</a> //
<a href=#324 id=324 data-nosnippet>324</a> // Without Content-Length we have no choice but to
<a href=#325 id=325 data-nosnippet>325</a> // scan for the separator (it's how the body ends).
<a href=#326 id=326 data-nosnippet>326</a> </span><span class="kw">let </span>(body_end, consume_sep_after_yield) = <span class="kw">match </span><span class="kw-2">*</span>content_length {
<a href=#327 id=327 data-nosnippet>327</a> <span class="prelude-val">Some</span>(cl) <span class="kw">if </span>this.buf.len() >= cl => (<span class="prelude-val">Some</span>(cl), <span class="bool-val">true</span>),
<a href=#328 id=328 data-nosnippet>328</a> <span class="prelude-val">Some</span>(<span class="kw">_</span>) => (<span class="prelude-val">None</span>, <span class="bool-val">false</span>),
<a href=#329 id=329 data-nosnippet>329</a> <span class="prelude-val">None </span>=> (find_subslice(<span class="kw-2">&</span>this.buf, <span class="kw-2">&</span>this.boundary_sep), <span class="bool-val">false</span>),
<a href=#330 id=330 data-nosnippet>330</a> };
<a href=#331 id=331 data-nosnippet>331</a>
<a href=#332 id=332 data-nosnippet>332</a> <span class="kw">if let </span><span class="prelude-val">Some</span>(end) = body_end {
<a href=#333 id=333 data-nosnippet>333</a> <span class="kw">let </span>body = this.buf.split_to(end).freeze();
<a href=#334 id=334 data-nosnippet>334</a>
<a href=#335 id=335 data-nosnippet>335</a> <span class="kw">let </span>part = BatchPart {
<a href=#336 id=336 data-nosnippet>336</a> headers: std::mem::take(headers),
<a href=#337 id=337 data-nosnippet>337</a> body,
<a href=#338 id=338 data-nosnippet>338</a> };
<a href=#339 id=339 data-nosnippet>339</a>
<a href=#340 id=340 data-nosnippet>340</a> <span class="kw">if </span>consume_sep_after_yield {
<a href=#341 id=341 data-nosnippet>341</a> this.state = State::ConsumeSeparator;
<a href=#342 id=342 data-nosnippet>342</a> } <span class="kw">else </span>{
<a href=#343 id=343 data-nosnippet>343</a> <span class="comment">// Separator was part of the body_end scan;
<a href=#344 id=344 data-nosnippet>344</a> // drop its bytes and go back to the suffix.
<a href=#345 id=345 data-nosnippet>345</a> </span><span class="kw">let _ </span>= this.buf.split_to(this.boundary_sep.len());
<a href=#346 id=346 data-nosnippet>346</a> this.state = State::BoundarySuffix;
<a href=#347 id=347 data-nosnippet>347</a> }
<a href=#348 id=348 data-nosnippet>348</a>
<a href=#349 id=349 data-nosnippet>349</a> <span class="kw">return </span>Poll::Ready(<span class="prelude-val">Some</span>(<span class="prelude-val">Ok</span>(part)));
<a href=#350 id=350 data-nosnippet>350</a> }
<a href=#351 id=351 data-nosnippet>351</a> }
<a href=#352 id=352 data-nosnippet>352</a>
<a href=#353 id=353 data-nosnippet>353</a> State::ConsumeSeparator => {
<a href=#354 id=354 data-nosnippet>354</a> <span class="kw">if let </span><span class="prelude-val">Some</span>(idx) = find_subslice(<span class="kw-2">&</span>this.buf, <span class="kw-2">&</span>this.boundary_sep) {
<a href=#355 id=355 data-nosnippet>355</a> <span class="kw">let _ </span>= this.buf.split_to(idx + this.boundary_sep.len());
<a href=#356 id=356 data-nosnippet>356</a> this.state = State::BoundarySuffix;
<a href=#357 id=357 data-nosnippet>357</a> <span class="kw">continue</span>;
<a href=#358 id=358 data-nosnippet>358</a> }
<a href=#359 id=359 data-nosnippet>359</a> <span class="comment">// Need more bytes; fall through to the pump block.
<a href=#360 id=360 data-nosnippet>360</a> </span>}
<a href=#361 id=361 data-nosnippet>361</a> }
<a href=#362 id=362 data-nosnippet>362</a>
<a href=#363 id=363 data-nosnippet>363</a> <span class="comment">// Need more bytes from the underlying stream.
<a href=#364 id=364 data-nosnippet>364</a> </span><span class="kw">if </span>this.done {
<a href=#365 id=365 data-nosnippet>365</a> <span class="kw">return </span>Poll::Ready(<span class="prelude-val">None</span>);
<a href=#366 id=366 data-nosnippet>366</a> }
<a href=#367 id=367 data-nosnippet>367</a>
<a href=#368 id=368 data-nosnippet>368</a> <span class="kw">match </span>Pin::new(<span class="kw-2">&mut </span>this.inner).poll_next(cx) {
<a href=#369 id=369 data-nosnippet>369</a> Poll::Pending => <span class="kw">return </span>Poll::Pending,
<a href=#370 id=370 data-nosnippet>370</a> Poll::Ready(<span class="prelude-val">None</span>) => {
<a href=#371 id=371 data-nosnippet>371</a> this.done = <span class="bool-val">true</span>;
<a href=#372 id=372 data-nosnippet>372</a> <span class="comment">// Let the state machine see EOF on next iteration —
<a href=#373 id=373 data-nosnippet>373</a> // usually it'll go to Done.
<a href=#374 id=374 data-nosnippet>374</a> </span><span class="kw">continue</span>;
<a href=#375 id=375 data-nosnippet>375</a> }
<a href=#376 id=376 data-nosnippet>376</a> Poll::Ready(<span class="prelude-val">Some</span>(<span class="prelude-val">Err</span>(e))) => {
<a href=#377 id=377 data-nosnippet>377</a> <span class="kw">return </span>Poll::Ready(<span class="prelude-val">Some</span>(<span class="prelude-val">Err</span>(ScrapflyError::Config(<span class="macro">format!</span>(
<a href=#378 id=378 data-nosnippet>378</a> <span class="string">"batch stream error: {}"</span>,
<a href=#379 id=379 data-nosnippet>379</a> e
<a href=#380 id=380 data-nosnippet>380</a> )))));
<a href=#381 id=381 data-nosnippet>381</a> }
<a href=#382 id=382 data-nosnippet>382</a> Poll::Ready(<span class="prelude-val">Some</span>(<span class="prelude-val">Ok</span>(bytes))) => {
<a href=#383 id=383 data-nosnippet>383</a> this.buf.extend_from_slice(<span class="kw-2">&</span>bytes);
<a href=#384 id=384 data-nosnippet>384</a> <span class="kw">continue</span>;
<a href=#385 id=385 data-nosnippet>385</a> }
<a href=#386 id=386 data-nosnippet>386</a> }
<a href=#387 id=387 data-nosnippet>387</a> }
<a href=#388 id=388 data-nosnippet>388</a> }
<a href=#389 id=389 data-nosnippet>389</a>}
<a href=#390 id=390 data-nosnippet>390</a>
<a href=#391 id=391 data-nosnippet>391</a><span class="doccomment">/// Convenience: take a reqwest `Response` whose Content-Type is
<a href=#392 id=392 data-nosnippet>392</a>/// multipart/mixed and return a typed `Stream<Item=BatchPart>`.
<a href=#393 id=393 data-nosnippet>393</a></span><span class="kw">pub fn </span>parts_from_response(
<a href=#394 id=394 data-nosnippet>394</a> resp: reqwest::Response,
<a href=#395 id=395 data-nosnippet>395</a>) -> <span class="prelude-ty">Result</span><BatchPartStream<<span class="kw">impl </span>Stream<Item = <span class="prelude-ty">Result</span><Bytes, reqwest::Error>>>, ScrapflyError> {
<a href=#396 id=396 data-nosnippet>396</a> <span class="kw">let </span>ct = resp
<a href=#397 id=397 data-nosnippet>397</a> .headers()
<a href=#398 id=398 data-nosnippet>398</a> .get(<span class="string">"content-type"</span>)
<a href=#399 id=399 data-nosnippet>399</a> .and_then(|v| v.to_str().ok())
<a href=#400 id=400 data-nosnippet>400</a> .unwrap_or(<span class="string">""</span>)
<a href=#401 id=401 data-nosnippet>401</a> .to_string();
<a href=#402 id=402 data-nosnippet>402</a>
<a href=#403 id=403 data-nosnippet>403</a> <span class="kw">let </span>(mime, params) = parse_content_type(<span class="kw-2">&</span>ct);
<a href=#404 id=404 data-nosnippet>404</a>
<a href=#405 id=405 data-nosnippet>405</a> <span class="kw">if </span>mime != <span class="string">"multipart/mixed" </span>{
<a href=#406 id=406 data-nosnippet>406</a> <span class="kw">return </span><span class="prelude-val">Err</span>(ScrapflyError::Config(<span class="macro">format!</span>(
<a href=#407 id=407 data-nosnippet>407</a> <span class="string">"scrape_batch: expected Content-Type multipart/mixed, got {:?}"</span>,
<a href=#408 id=408 data-nosnippet>408</a> ct
<a href=#409 id=409 data-nosnippet>409</a> )));
<a href=#410 id=410 data-nosnippet>410</a> }
<a href=#411 id=411 data-nosnippet>411</a>
<a href=#412 id=412 data-nosnippet>412</a> <span class="kw">let </span>boundary = params.get(<span class="string">"boundary"</span>).cloned().ok_or_else(|| {
<a href=#413 id=413 data-nosnippet>413</a> ScrapflyError::Config(<span class="macro">format!</span>(
<a href=#414 id=414 data-nosnippet>414</a> <span class="string">"scrape_batch: Content-Type multipart/mixed missing boundary: {:?}"</span>,
<a href=#415 id=415 data-nosnippet>415</a> ct
<a href=#416 id=416 data-nosnippet>416</a> ))
<a href=#417 id=417 data-nosnippet>417</a> })<span class="question-mark">?</span>;
<a href=#418 id=418 data-nosnippet>418</a>
<a href=#419 id=419 data-nosnippet>419</a> <span class="prelude-val">Ok</span>(BatchPartStream::new(resp.bytes_stream(), <span class="kw-2">&</span>boundary))
<a href=#420 id=420 data-nosnippet>420</a>}
<a href=#421 id=421 data-nosnippet>421</a>
<a href=#422 id=422 data-nosnippet>422</a><span class="doccomment">/// Header prefix used by the server to forward upstream response
<a href=#423 id=423 data-nosnippet>423</a>/// headers on proxified batch parts.
<a href=#424 id=424 data-nosnippet>424</a></span><span class="kw">const </span>UPSTREAM_PREFIX: <span class="kw-2">&</span>str = <span class="string">"x-scrapfly-upstream-"</span>;
<a href=#425 id=425 data-nosnippet>425</a>
<a href=#426 id=426 data-nosnippet>426</a><span class="doccomment">/// Synthesize a `BatchProxifiedResponse` from a proxified batch part.
<a href=#427 id=427 data-nosnippet>427</a>/// Restores the upstream HTTP status from `X-Scrapfly-Scrape-Status`,
<a href=#428 id=428 data-nosnippet>428</a>/// merges upstream headers (after stripping the `X-Scrapfly-Upstream-`
<a href=#429 id=429 data-nosnippet>429</a>/// prefix) with Scrapfly metadata headers, and exposes the raw body.
<a href=#430 id=430 data-nosnippet>430</a></span><span class="kw">pub fn </span>build_proxified_response(part: BatchPart) -> BatchProxifiedResponse {
<a href=#431 id=431 data-nosnippet>431</a> <span class="kw">let </span>status: u16 = part
<a href=#432 id=432 data-nosnippet>432</a> .headers
<a href=#433 id=433 data-nosnippet>433</a> .get(<span class="string">"x-scrapfly-scrape-status"</span>)
<a href=#434 id=434 data-nosnippet>434</a> .and_then(|s| s.parse().ok())
<a href=#435 id=435 data-nosnippet>435</a> .unwrap_or(<span class="number">200</span>);
<a href=#436 id=436 data-nosnippet>436</a>
<a href=#437 id=437 data-nosnippet>437</a> <span class="kw">let </span><span class="kw-2">mut </span>out_headers: HashMap<String, String> = HashMap::new();
<a href=#438 id=438 data-nosnippet>438</a>
<a href=#439 id=439 data-nosnippet>439</a> <span class="kw">for </span>(key, value) <span class="kw">in </span><span class="kw-2">&</span>part.headers {
<a href=#440 id=440 data-nosnippet>440</a> <span class="kw">if </span>key == <span class="string">"content-type" </span>{
<a href=#441 id=441 data-nosnippet>441</a> out_headers.insert(<span class="string">"content-type"</span>.into(), value.clone());
<a href=#442 id=442 data-nosnippet>442</a> } <span class="kw">else if let </span><span class="prelude-val">Some</span>(stripped) = key.strip_prefix(UPSTREAM_PREFIX) {
<a href=#443 id=443 data-nosnippet>443</a> out_headers.insert(stripped.to_string(), value.clone());
<a href=#444 id=444 data-nosnippet>444</a> } <span class="kw">else if </span>key.starts_with(<span class="string">"x-scrapfly-"</span>) {
<a href=#445 id=445 data-nosnippet>445</a> out_headers.insert(key.clone(), value.clone());
<a href=#446 id=446 data-nosnippet>446</a> }
<a href=#447 id=447 data-nosnippet>447</a> }
<a href=#448 id=448 data-nosnippet>448</a>
<a href=#449 id=449 data-nosnippet>449</a> <span class="comment">// Normalize X-Scrapfly-Log-Uuid → X-Scrapfly-Log for parity with
<a href=#450 id=450 data-nosnippet>450</a> // the single-scrape proxified response.
<a href=#451 id=451 data-nosnippet>451</a> </span><span class="kw">if </span>!out_headers.contains_key(<span class="string">"x-scrapfly-log"</span>) {
<a href=#452 id=452 data-nosnippet>452</a> <span class="kw">if let </span><span class="prelude-val">Some</span>(log_uuid) = out_headers.get(<span class="string">"x-scrapfly-log-uuid"</span>).cloned() {
<a href=#453 id=453 data-nosnippet>453</a> out_headers.insert(<span class="string">"x-scrapfly-log"</span>.into(), log_uuid);
<a href=#454 id=454 data-nosnippet>454</a> }
<a href=#455 id=455 data-nosnippet>455</a> }
<a href=#456 id=456 data-nosnippet>456</a>
<a href=#457 id=457 data-nosnippet>457</a> BatchProxifiedResponse {
<a href=#458 id=458 data-nosnippet>458</a> status,
<a href=#459 id=459 data-nosnippet>459</a> headers: out_headers,
<a href=#460 id=460 data-nosnippet>460</a> body: part.body,
<a href=#461 id=461 data-nosnippet>461</a> }
<a href=#462 id=462 data-nosnippet>462</a>}
<a href=#463 id=463 data-nosnippet>463</a>
<a href=#464 id=464 data-nosnippet>464</a><span class="doccomment">/// Decode a part body according to its Content-Type. Supports
<a href=#465 id=465 data-nosnippet>465</a>/// `application/json` (default) and `application/msgpack`.
<a href=#466 id=466 data-nosnippet>466</a></span><span class="kw">pub fn </span>decode_part_body<T: serde::de::DeserializeOwned>(
<a href=#467 id=467 data-nosnippet>467</a> part: <span class="kw-2">&</span>BatchPart,
<a href=#468 id=468 data-nosnippet>468</a>) -> <span class="prelude-ty">Result</span><T, ScrapflyError> {
<a href=#469 id=469 data-nosnippet>469</a> <span class="kw">let </span>ct = part
<a href=#470 id=470 data-nosnippet>470</a> .headers
<a href=#471 id=471 data-nosnippet>471</a> .get(<span class="string">"content-type"</span>)
<a href=#472 id=472 data-nosnippet>472</a> .cloned()
<a href=#473 id=473 data-nosnippet>473</a> .unwrap_or_else(|| <span class="string">"application/json"</span>.to_string());
<a href=#474 id=474 data-nosnippet>474</a>
<a href=#475 id=475 data-nosnippet>475</a> <span class="kw">if </span>ct.starts_with(<span class="string">"application/json"</span>) {
<a href=#476 id=476 data-nosnippet>476</a> <span class="kw">return </span>serde_json::from_slice::<T>(<span class="kw-2">&</span>part.body)
<a href=#477 id=477 data-nosnippet>477</a> .map_err(|e| ScrapflyError::Config(<span class="macro">format!</span>(<span class="string">"scrape_batch: decode JSON part: {}"</span>, e)));
<a href=#478 id=478 data-nosnippet>478</a> }
<a href=#479 id=479 data-nosnippet>479</a>
<a href=#480 id=480 data-nosnippet>480</a> <span class="kw">if </span>ct.starts_with(<span class="string">"application/msgpack"</span>) || ct.starts_with(<span class="string">"application/x-msgpack"</span>) {
<a href=#481 id=481 data-nosnippet>481</a> <span class="kw">return </span>rmp_serde::from_slice::<T>(<span class="kw-2">&</span>part.body).map_err(|e| {
<a href=#482 id=482 data-nosnippet>482</a> ScrapflyError::Config(<span class="macro">format!</span>(<span class="string">"scrape_batch: decode msgpack part: {}"</span>, e))
<a href=#483 id=483 data-nosnippet>483</a> });
<a href=#484 id=484 data-nosnippet>484</a> }
<a href=#485 id=485 data-nosnippet>485</a>
<a href=#486 id=486 data-nosnippet>486</a> <span class="prelude-val">Err</span>(ScrapflyError::Config(<span class="macro">format!</span>(
<a href=#487 id=487 data-nosnippet>487</a> <span class="string">"scrape_batch: unsupported part Content-Type: {:?}"</span>,
<a href=#488 id=488 data-nosnippet>488</a> ct
<a href=#489 id=489 data-nosnippet>489</a> )))
<a href=#490 id=490 data-nosnippet>490</a>}
</code></pre></div></section></main></body></html>