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<!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/cli/src/data/export_v2/extractor.rs`."><title>extractor.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-17e0aaed.css"><meta name="rustdoc-vars" data-root-path="../../../../" data-static-root-path="../../../../static.files/" data-current-crate="cli" data-themes="" data-resource-suffix="" data-rustdoc-version="1.96.1 (31fca3adb 2026-06-26)" data-channel="1.96.1" data-search-js="search-b5634cc7.js" data-stringdex-js="stringdex-2da4960a.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">cli/data/export_v2/</div>extractor.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="comment">// Copyright 2023 Greptime Team
<a href=#2 id=2 data-nosnippet>2</a>//
<a href=#3 id=3 data-nosnippet>3</a>// Licensed under the Apache License, Version 2.0 (the "License");
<a href=#4 id=4 data-nosnippet>4</a>// you may not use this file except in compliance with the License.
<a href=#5 id=5 data-nosnippet>5</a>// You may obtain a copy of the License at
<a href=#6 id=6 data-nosnippet>6</a>//
<a href=#7 id=7 data-nosnippet>7</a>// http://www.apache.org/licenses/LICENSE-2.0
<a href=#8 id=8 data-nosnippet>8</a>//
<a href=#9 id=9 data-nosnippet>9</a>// Unless required by applicable law or agreed to in writing, software
<a href=#10 id=10 data-nosnippet>10</a>// distributed under the License is distributed on an "AS IS" BASIS,
<a href=#11 id=11 data-nosnippet>11</a>// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
<a href=#12 id=12 data-nosnippet>12</a>// See the License for the specific language governing permissions and
<a href=#13 id=13 data-nosnippet>13</a>// limitations under the License.
<a href=#14 id=14 data-nosnippet>14</a>
<a href=#15 id=15 data-nosnippet>15</a></span><span class="doccomment">//! Schema extraction from information_schema.
<a href=#16 id=16 data-nosnippet>16</a>//!
<a href=#17 id=17 data-nosnippet>17</a>//! For V2 DDL-only snapshots, extractor only persists the schema index.
<a href=#18 id=18 data-nosnippet>18</a>
<a href=#19 id=19 data-nosnippet>19</a></span><span class="kw">use </span>std::collections::{HashMap, HashSet};
<a href=#20 id=20 data-nosnippet>20</a>
<a href=#21 id=21 data-nosnippet>21</a><span class="kw">use </span>serde_json::Value;
<a href=#22 id=22 data-nosnippet>22</a><span class="kw">use </span>snafu::ResultExt;
<a href=#23 id=23 data-nosnippet>23</a>
<a href=#24 id=24 data-nosnippet>24</a><span class="kw">use </span><span class="kw">crate</span>::data::export_v2::error::{
<a href=#25 id=25 data-nosnippet>25</a> DatabaseSnafu, EmptyResultSnafu, <span class="prelude-ty">Result</span>, SchemaNotFoundSnafu, UnexpectedValueTypeSnafu,
<a href=#26 id=26 data-nosnippet>26</a>};
<a href=#27 id=27 data-nosnippet>27</a><span class="kw">use </span><span class="kw">crate</span>::data::export_v2::schema::{SchemaDefinition, SchemaSnapshot};
<a href=#28 id=28 data-nosnippet>28</a><span class="kw">use </span><span class="kw">crate</span>::data::sql::escape_sql_literal;
<a href=#29 id=29 data-nosnippet>29</a><span class="kw">use </span><span class="kw">crate</span>::database::DatabaseClient;
<a href=#30 id=30 data-nosnippet>30</a>
<a href=#31 id=31 data-nosnippet>31</a><span class="doccomment">/// System schemas that should be excluded from export.
<a href=#32 id=32 data-nosnippet>32</a></span><span class="kw">const </span>SYSTEM_SCHEMAS: <span class="kw-2">&amp;</span>[<span class="kw-2">&amp;</span>str] = <span class="kw-2">&amp;</span>[<span class="string">"information_schema"</span>, <span class="string">"pg_catalog"</span>];
<a href=#33 id=33 data-nosnippet>33</a>
<a href=#34 id=34 data-nosnippet>34</a><span class="doccomment">/// Extracts schema definitions from information_schema.
<a href=#35 id=35 data-nosnippet>35</a></span><span class="kw">pub struct </span>SchemaExtractor&lt;<span class="lifetime">'a</span>&gt; {
<a href=#36 id=36 data-nosnippet>36</a> client: <span class="kw-2">&amp;</span><span class="lifetime">'a </span>DatabaseClient,
<a href=#37 id=37 data-nosnippet>37</a> catalog: <span class="kw-2">&amp;</span><span class="lifetime">'a </span>str,
<a href=#38 id=38 data-nosnippet>38</a>}
<a href=#39 id=39 data-nosnippet>39</a>
<a href=#40 id=40 data-nosnippet>40</a><span class="kw">impl</span>&lt;<span class="lifetime">'a</span>&gt; SchemaExtractor&lt;<span class="lifetime">'a</span>&gt; {
<a href=#41 id=41 data-nosnippet>41</a> <span class="doccomment">/// Creates a new schema extractor.
<a href=#42 id=42 data-nosnippet>42</a> </span><span class="kw">pub fn </span>new(client: <span class="kw-2">&amp;</span><span class="lifetime">'a </span>DatabaseClient, catalog: <span class="kw-2">&amp;</span><span class="lifetime">'a </span>str) -&gt; <span class="self">Self </span>{
<a href=#43 id=43 data-nosnippet>43</a> <span class="self">Self </span>{ client, catalog }
<a href=#44 id=44 data-nosnippet>44</a> }
<a href=#45 id=45 data-nosnippet>45</a>
<a href=#46 id=46 data-nosnippet>46</a> <span class="doccomment">/// Extracts the schema index for the given schemas.
<a href=#47 id=47 data-nosnippet>47</a> ///
<a href=#48 id=48 data-nosnippet>48</a> /// If `schemas` is None, extracts all non-system schemas.
<a href=#49 id=49 data-nosnippet>49</a> </span><span class="kw">pub async fn </span>extract(<span class="kw-2">&amp;</span><span class="self">self</span>, schemas: <span class="prelude-ty">Option</span>&lt;<span class="kw-2">&amp;</span>[String]&gt;) -&gt; <span class="prelude-ty">Result</span>&lt;SchemaSnapshot&gt; {
<a href=#50 id=50 data-nosnippet>50</a> <span class="kw">let </span><span class="kw-2">mut </span>snapshot = SchemaSnapshot::new();
<a href=#51 id=51 data-nosnippet>51</a>
<a href=#52 id=52 data-nosnippet>52</a> <span class="kw">let </span>schema_names = <span class="kw">match </span>schemas {
<a href=#53 id=53 data-nosnippet>53</a> <span class="prelude-val">Some</span>(names) =&gt; <span class="self">self</span>.validate_schemas(names).<span class="kw">await</span><span class="question-mark">?</span>,
<a href=#54 id=54 data-nosnippet>54</a> <span class="prelude-val">None </span>=&gt; <span class="self">self</span>.get_all_schemas().<span class="kw">await</span><span class="question-mark">?</span>,
<a href=#55 id=55 data-nosnippet>55</a> };
<a href=#56 id=56 data-nosnippet>56</a>
<a href=#57 id=57 data-nosnippet>57</a> <span class="kw">for </span>schema_name <span class="kw">in </span><span class="kw-2">&amp;</span>schema_names {
<a href=#58 id=58 data-nosnippet>58</a> <span class="kw">let </span>schema_def = <span class="self">self</span>.extract_schema_definition(schema_name).<span class="kw">await</span><span class="question-mark">?</span>;
<a href=#59 id=59 data-nosnippet>59</a> snapshot.add_schema(schema_def);
<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="prelude-val">Ok</span>(snapshot)
<a href=#63 id=63 data-nosnippet>63</a> }
<a href=#64 id=64 data-nosnippet>64</a>
<a href=#65 id=65 data-nosnippet>65</a> <span class="doccomment">/// Gets all non-system schemas in the catalog.
<a href=#66 id=66 data-nosnippet>66</a> </span><span class="kw">async fn </span>get_all_schemas(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="prelude-ty">Result</span>&lt;Vec&lt;String&gt;&gt; {
<a href=#67 id=67 data-nosnippet>67</a> <span class="kw">let </span>sql = <span class="macro">format!</span>(
<a href=#68 id=68 data-nosnippet>68</a> <span class="string">"SELECT schema_name FROM information_schema.schemata \
<a href=#69 id=69 data-nosnippet>69</a> WHERE catalog_name = '{}'"</span>,
<a href=#70 id=70 data-nosnippet>70</a> escape_sql_literal(<span class="self">self</span>.catalog)
<a href=#71 id=71 data-nosnippet>71</a> );
<a href=#72 id=72 data-nosnippet>72</a>
<a href=#73 id=73 data-nosnippet>73</a> <span class="kw">let </span>records = <span class="self">self</span>.query(<span class="kw-2">&amp;</span>sql).<span class="kw">await</span><span class="question-mark">?</span>;
<a href=#74 id=74 data-nosnippet>74</a> <span class="kw">let </span><span class="kw-2">mut </span>schemas = Vec::new();
<a href=#75 id=75 data-nosnippet>75</a>
<a href=#76 id=76 data-nosnippet>76</a> <span class="kw">for </span>row <span class="kw">in </span>records {
<a href=#77 id=77 data-nosnippet>77</a> <span class="kw">let </span>name = extract_string(<span class="kw-2">&amp;</span>row, <span class="number">0</span>)<span class="question-mark">?</span>;
<a href=#78 id=78 data-nosnippet>78</a> <span class="kw">if </span>!SYSTEM_SCHEMAS.contains(<span class="kw-2">&amp;</span>name.as_str()) {
<a href=#79 id=79 data-nosnippet>79</a> schemas.push(name);
<a href=#80 id=80 data-nosnippet>80</a> }
<a href=#81 id=81 data-nosnippet>81</a> }
<a href=#82 id=82 data-nosnippet>82</a>
<a href=#83 id=83 data-nosnippet>83</a> <span class="prelude-val">Ok</span>(schemas)
<a href=#84 id=84 data-nosnippet>84</a> }
<a href=#85 id=85 data-nosnippet>85</a>
<a href=#86 id=86 data-nosnippet>86</a> <span class="doccomment">/// Validates that all specified schemas exist.
<a href=#87 id=87 data-nosnippet>87</a> </span><span class="kw">async fn </span>validate_schemas(<span class="kw-2">&amp;</span><span class="self">self</span>, schemas: <span class="kw-2">&amp;</span>[String]) -&gt; <span class="prelude-ty">Result</span>&lt;Vec&lt;String&gt;&gt; {
<a href=#88 id=88 data-nosnippet>88</a> <span class="kw">let </span>all_schemas = <span class="self">self</span>.get_all_schemas().<span class="kw">await</span><span class="question-mark">?</span>;
<a href=#89 id=89 data-nosnippet>89</a> dedupe_canonicalized_schemas(schemas, <span class="kw-2">&amp;</span>all_schemas, <span class="self">self</span>.catalog)
<a href=#90 id=90 data-nosnippet>90</a> }
<a href=#91 id=91 data-nosnippet>91</a>
<a href=#92 id=92 data-nosnippet>92</a> <span class="doccomment">/// Extracts schema (database) definition.
<a href=#93 id=93 data-nosnippet>93</a> </span><span class="kw">async fn </span>extract_schema_definition(<span class="kw-2">&amp;</span><span class="self">self</span>, schema: <span class="kw-2">&amp;</span>str) -&gt; <span class="prelude-ty">Result</span>&lt;SchemaDefinition&gt; {
<a href=#94 id=94 data-nosnippet>94</a> <span class="kw">let </span>sql = <span class="macro">format!</span>(
<a href=#95 id=95 data-nosnippet>95</a> <span class="string">"SELECT schema_name, options FROM information_schema.schemata \
<a href=#96 id=96 data-nosnippet>96</a> WHERE catalog_name = '{}' AND schema_name = '{}'"</span>,
<a href=#97 id=97 data-nosnippet>97</a> escape_sql_literal(<span class="self">self</span>.catalog),
<a href=#98 id=98 data-nosnippet>98</a> escape_sql_literal(schema)
<a href=#99 id=99 data-nosnippet>99</a> );
<a href=#100 id=100 data-nosnippet>100</a>
<a href=#101 id=101 data-nosnippet>101</a> <span class="kw">let </span>records = <span class="self">self</span>.query(<span class="kw-2">&amp;</span>sql).<span class="kw">await</span><span class="question-mark">?</span>;
<a href=#102 id=102 data-nosnippet>102</a> <span class="kw">if </span>records.is_empty() {
<a href=#103 id=103 data-nosnippet>103</a> <span class="kw">return </span>SchemaNotFoundSnafu {
<a href=#104 id=104 data-nosnippet>104</a> catalog: <span class="self">self</span>.catalog,
<a href=#105 id=105 data-nosnippet>105</a> schema,
<a href=#106 id=106 data-nosnippet>106</a> }
<a href=#107 id=107 data-nosnippet>107</a> .fail();
<a href=#108 id=108 data-nosnippet>108</a> }
<a href=#109 id=109 data-nosnippet>109</a>
<a href=#110 id=110 data-nosnippet>110</a> <span class="kw">let </span>name = extract_string(<span class="kw-2">&amp;</span>records[<span class="number">0</span>], <span class="number">0</span>)<span class="question-mark">?</span>;
<a href=#111 id=111 data-nosnippet>111</a> <span class="kw">let </span>options = extract_optional_string(<span class="kw-2">&amp;</span>records[<span class="number">0</span>], <span class="number">1</span>)
<a href=#112 id=112 data-nosnippet>112</a> .map(|opts| parse_options(<span class="kw-2">&amp;</span>opts))
<a href=#113 id=113 data-nosnippet>113</a> .unwrap_or_default();
<a href=#114 id=114 data-nosnippet>114</a>
<a href=#115 id=115 data-nosnippet>115</a> <span class="prelude-val">Ok</span>(SchemaDefinition {
<a href=#116 id=116 data-nosnippet>116</a> catalog: <span class="self">self</span>.catalog.to_string(),
<a href=#117 id=117 data-nosnippet>117</a> name,
<a href=#118 id=118 data-nosnippet>118</a> options,
<a href=#119 id=119 data-nosnippet>119</a> })
<a href=#120 id=120 data-nosnippet>120</a> }
<a href=#121 id=121 data-nosnippet>121</a>
<a href=#122 id=122 data-nosnippet>122</a> <span class="doccomment">/// Executes a SQL query and returns the results.
<a href=#123 id=123 data-nosnippet>123</a> </span><span class="kw">async fn </span>query(<span class="kw-2">&amp;</span><span class="self">self</span>, sql: <span class="kw-2">&amp;</span>str) -&gt; <span class="prelude-ty">Result</span>&lt;Vec&lt;Vec&lt;Value&gt;&gt;&gt; {
<a href=#124 id=124 data-nosnippet>124</a> <span class="self">self</span>.client
<a href=#125 id=125 data-nosnippet>125</a> .sql_in_public(sql)
<a href=#126 id=126 data-nosnippet>126</a> .<span class="kw">await
<a href=#127 id=127 data-nosnippet>127</a> </span>.context(DatabaseSnafu)<span class="question-mark">?
<a href=#128 id=128 data-nosnippet>128</a> </span>.ok_or_else(|| EmptyResultSnafu.build())
<a href=#129 id=129 data-nosnippet>129</a> }
<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="doccomment">/// Extracts a string value from a row.
<a href=#133 id=133 data-nosnippet>133</a></span><span class="kw">fn </span>extract_string(row: <span class="kw-2">&amp;</span>[Value], index: usize) -&gt; <span class="prelude-ty">Result</span>&lt;String&gt; {
<a href=#134 id=134 data-nosnippet>134</a> <span class="kw">match </span>row.get(index) {
<a href=#135 id=135 data-nosnippet>135</a> <span class="prelude-val">Some</span>(Value::String(s)) =&gt; <span class="prelude-val">Ok</span>(s.clone()),
<a href=#136 id=136 data-nosnippet>136</a> <span class="prelude-val">Some</span>(Value::Null) =&gt; UnexpectedValueTypeSnafu.fail(),
<a href=#137 id=137 data-nosnippet>137</a> <span class="kw">_ </span>=&gt; UnexpectedValueTypeSnafu.fail(),
<a href=#138 id=138 data-nosnippet>138</a> }
<a href=#139 id=139 data-nosnippet>139</a>}
<a href=#140 id=140 data-nosnippet>140</a>
<a href=#141 id=141 data-nosnippet>141</a><span class="doccomment">/// Extracts an optional string value from a row.
<a href=#142 id=142 data-nosnippet>142</a></span><span class="kw">fn </span>extract_optional_string(row: <span class="kw-2">&amp;</span>[Value], index: usize) -&gt; <span class="prelude-ty">Option</span>&lt;String&gt; {
<a href=#143 id=143 data-nosnippet>143</a> <span class="kw">match </span>row.get(index) {
<a href=#144 id=144 data-nosnippet>144</a> <span class="prelude-val">Some</span>(Value::String(s)) <span class="kw">if </span>!s.is_empty() =&gt; <span class="prelude-val">Some</span>(s.clone()),
<a href=#145 id=145 data-nosnippet>145</a> <span class="kw">_ </span>=&gt; <span class="prelude-val">None</span>,
<a href=#146 id=146 data-nosnippet>146</a> }
<a href=#147 id=147 data-nosnippet>147</a>}
<a href=#148 id=148 data-nosnippet>148</a>
<a href=#149 id=149 data-nosnippet>149</a><span class="doccomment">/// Parses options string into a HashMap.
<a href=#150 id=150 data-nosnippet>150</a></span><span class="kw">fn </span>parse_options(options_str: <span class="kw-2">&amp;</span>str) -&gt; HashMap&lt;String, String&gt; {
<a href=#151 id=151 data-nosnippet>151</a> <span class="kw">if let </span><span class="prelude-val">Ok</span>(map) = serde_json::from_str::&lt;HashMap&lt;String, String&gt;&gt;(options_str) {
<a href=#152 id=152 data-nosnippet>152</a> <span class="kw">return </span>map;
<a href=#153 id=153 data-nosnippet>153</a> }
<a href=#154 id=154 data-nosnippet>154</a>
<a href=#155 id=155 data-nosnippet>155</a> <span class="kw">let </span><span class="kw-2">mut </span>options = HashMap::new();
<a href=#156 id=156 data-nosnippet>156</a> <span class="kw">for </span>line <span class="kw">in </span>options_str.lines() {
<a href=#157 id=157 data-nosnippet>157</a> <span class="kw">let </span>trimmed = line.trim();
<a href=#158 id=158 data-nosnippet>158</a> <span class="kw">if </span>trimmed.is_empty() {
<a href=#159 id=159 data-nosnippet>159</a> <span class="kw">continue</span>;
<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> <span class="kw">if let </span><span class="prelude-val">Some</span>((key, value)) = parse_quoted_option_line(trimmed) {
<a href=#163 id=163 data-nosnippet>163</a> options.insert(key, value);
<a href=#164 id=164 data-nosnippet>164</a> <span class="kw">continue</span>;
<a href=#165 id=165 data-nosnippet>165</a> }
<a href=#166 id=166 data-nosnippet>166</a>
<a href=#167 id=167 data-nosnippet>167</a> <span class="kw">for </span>part <span class="kw">in </span>trimmed.split_whitespace() {
<a href=#168 id=168 data-nosnippet>168</a> <span class="kw">if let </span><span class="prelude-val">Some</span>((key, value)) = part.split_once(<span class="string">'='</span>) {
<a href=#169 id=169 data-nosnippet>169</a> options.insert(key.to_string(), value.to_string());
<a href=#170 id=170 data-nosnippet>170</a> }
<a href=#171 id=171 data-nosnippet>171</a> }
<a href=#172 id=172 data-nosnippet>172</a> }
<a href=#173 id=173 data-nosnippet>173</a> options
<a href=#174 id=174 data-nosnippet>174</a>}
<a href=#175 id=175 data-nosnippet>175</a>
<a href=#176 id=176 data-nosnippet>176</a><span class="kw">fn </span>parse_quoted_option_line(line: <span class="kw-2">&amp;</span>str) -&gt; <span class="prelude-ty">Option</span>&lt;(String, String)&gt; {
<a href=#177 id=177 data-nosnippet>177</a> <span class="kw">let </span>key = line.strip_prefix(<span class="string">'\''</span>)<span class="question-mark">?</span>;
<a href=#178 id=178 data-nosnippet>178</a> <span class="kw">let </span>(key, rest) = key.split_once(<span class="string">"'='"</span>)<span class="question-mark">?</span>;
<a href=#179 id=179 data-nosnippet>179</a> <span class="kw">let </span>value = rest.strip_suffix(<span class="string">'\''</span>)<span class="question-mark">?</span>;
<a href=#180 id=180 data-nosnippet>180</a> <span class="prelude-val">Some</span>((key.to_string(), value.to_string()))
<a href=#181 id=181 data-nosnippet>181</a>}
<a href=#182 id=182 data-nosnippet>182</a>
<a href=#183 id=183 data-nosnippet>183</a><span class="kw">fn </span>dedupe_canonicalized_schemas(
<a href=#184 id=184 data-nosnippet>184</a> requested: <span class="kw-2">&amp;</span>[String],
<a href=#185 id=185 data-nosnippet>185</a> available: <span class="kw-2">&amp;</span>[String],
<a href=#186 id=186 data-nosnippet>186</a> catalog: <span class="kw-2">&amp;</span>str,
<a href=#187 id=187 data-nosnippet>187</a>) -&gt; <span class="prelude-ty">Result</span>&lt;Vec&lt;String&gt;&gt; {
<a href=#188 id=188 data-nosnippet>188</a> <span class="kw">let </span><span class="kw-2">mut </span>canonicalized = Vec::new();
<a href=#189 id=189 data-nosnippet>189</a> <span class="kw">let </span><span class="kw-2">mut </span>seen = HashSet::new();
<a href=#190 id=190 data-nosnippet>190</a>
<a href=#191 id=191 data-nosnippet>191</a> <span class="kw">for </span>schema <span class="kw">in </span>requested {
<a href=#192 id=192 data-nosnippet>192</a> <span class="kw">let </span><span class="prelude-val">Some</span>(canonical) = available.iter().find(|s| s.eq_ignore_ascii_case(schema)) <span class="kw">else </span>{
<a href=#193 id=193 data-nosnippet>193</a> <span class="kw">return </span>SchemaNotFoundSnafu { catalog, schema }.fail();
<a href=#194 id=194 data-nosnippet>194</a> };
<a href=#195 id=195 data-nosnippet>195</a>
<a href=#196 id=196 data-nosnippet>196</a> <span class="kw">if </span>seen.insert(canonical.to_ascii_lowercase()) {
<a href=#197 id=197 data-nosnippet>197</a> canonicalized.push(canonical.clone());
<a href=#198 id=198 data-nosnippet>198</a> }
<a href=#199 id=199 data-nosnippet>199</a> }
<a href=#200 id=200 data-nosnippet>200</a>
<a href=#201 id=201 data-nosnippet>201</a> <span class="prelude-val">Ok</span>(canonicalized)
<a href=#202 id=202 data-nosnippet>202</a>}
<a href=#203 id=203 data-nosnippet>203</a>
<a href=#204 id=204 data-nosnippet>204</a><span class="attr">#[cfg(test)]
<a href=#205 id=205 data-nosnippet>205</a></span><span class="kw">mod </span>tests {
<a href=#206 id=206 data-nosnippet>206</a> <span class="kw">use </span>serde_json::Value;
<a href=#207 id=207 data-nosnippet>207</a>
<a href=#208 id=208 data-nosnippet>208</a> <span class="kw">use </span>super::<span class="kw-2">*</span>;
<a href=#209 id=209 data-nosnippet>209</a>
<a href=#210 id=210 data-nosnippet>210</a> <span class="attr">#[test]
<a href=#211 id=211 data-nosnippet>211</a> </span><span class="kw">fn </span>test_parse_options_json() {
<a href=#212 id=212 data-nosnippet>212</a> <span class="kw">let </span>opts = <span class="string">r#"{"ttl": "30d", "custom": "value"}"#</span>;
<a href=#213 id=213 data-nosnippet>213</a> <span class="kw">let </span>parsed = parse_options(opts);
<a href=#214 id=214 data-nosnippet>214</a> <span class="macro">assert_eq!</span>(parsed.get(<span class="string">"ttl"</span>), <span class="prelude-val">Some</span>(<span class="kw-2">&amp;</span><span class="string">"30d"</span>.to_string()));
<a href=#215 id=215 data-nosnippet>215</a> <span class="macro">assert_eq!</span>(parsed.get(<span class="string">"custom"</span>), <span class="prelude-val">Some</span>(<span class="kw-2">&amp;</span><span class="string">"value"</span>.to_string()));
<a href=#216 id=216 data-nosnippet>216</a> }
<a href=#217 id=217 data-nosnippet>217</a>
<a href=#218 id=218 data-nosnippet>218</a> <span class="attr">#[test]
<a href=#219 id=219 data-nosnippet>219</a> </span><span class="kw">fn </span>test_parse_options_key_value() {
<a href=#220 id=220 data-nosnippet>220</a> <span class="kw">let </span>opts = <span class="string">"ttl=30d custom=value"</span>;
<a href=#221 id=221 data-nosnippet>221</a> <span class="kw">let </span>parsed = parse_options(opts);
<a href=#222 id=222 data-nosnippet>222</a> <span class="macro">assert_eq!</span>(parsed.get(<span class="string">"ttl"</span>), <span class="prelude-val">Some</span>(<span class="kw-2">&amp;</span><span class="string">"30d"</span>.to_string()));
<a href=#223 id=223 data-nosnippet>223</a> <span class="macro">assert_eq!</span>(parsed.get(<span class="string">"custom"</span>), <span class="prelude-val">Some</span>(<span class="kw-2">&amp;</span><span class="string">"value"</span>.to_string()));
<a href=#224 id=224 data-nosnippet>224</a> }
<a href=#225 id=225 data-nosnippet>225</a>
<a href=#226 id=226 data-nosnippet>226</a> <span class="attr">#[test]
<a href=#227 id=227 data-nosnippet>227</a> </span><span class="kw">fn </span>test_parse_options_schema_display_format() {
<a href=#228 id=228 data-nosnippet>228</a> <span class="kw">let </span>opts = <span class="string">"'ttl'='30d'\n'custom'='value with spaces'\n"</span>;
<a href=#229 id=229 data-nosnippet>229</a> <span class="kw">let </span>parsed = parse_options(opts);
<a href=#230 id=230 data-nosnippet>230</a> <span class="macro">assert_eq!</span>(parsed.get(<span class="string">"ttl"</span>), <span class="prelude-val">Some</span>(<span class="kw-2">&amp;</span><span class="string">"30d"</span>.to_string()));
<a href=#231 id=231 data-nosnippet>231</a> <span class="macro">assert_eq!</span>(parsed.get(<span class="string">"custom"</span>), <span class="prelude-val">Some</span>(<span class="kw-2">&amp;</span><span class="string">"value with spaces"</span>.to_string()));
<a href=#232 id=232 data-nosnippet>232</a> }
<a href=#233 id=233 data-nosnippet>233</a>
<a href=#234 id=234 data-nosnippet>234</a> <span class="attr">#[test]
<a href=#235 id=235 data-nosnippet>235</a> </span><span class="kw">fn </span>test_extract_string_rejects_null() {
<a href=#236 id=236 data-nosnippet>236</a> <span class="kw">let </span>row = <span class="macro">vec!</span>[Value::Null];
<a href=#237 id=237 data-nosnippet>237</a> <span class="macro">assert!</span>(extract_string(<span class="kw-2">&amp;</span>row, <span class="number">0</span>).is_err());
<a href=#238 id=238 data-nosnippet>238</a> }
<a href=#239 id=239 data-nosnippet>239</a>
<a href=#240 id=240 data-nosnippet>240</a> <span class="attr">#[test]
<a href=#241 id=241 data-nosnippet>241</a> </span><span class="kw">fn </span>test_dedupe_canonicalized_schemas() {
<a href=#242 id=242 data-nosnippet>242</a> <span class="kw">let </span>available = <span class="macro">vec!</span>[<span class="string">"public"</span>.to_string(), <span class="string">"test_db"</span>.to_string()];
<a href=#243 id=243 data-nosnippet>243</a> <span class="kw">let </span>requested = <span class="macro">vec!</span>[
<a href=#244 id=244 data-nosnippet>244</a> <span class="string">"PUBLIC"</span>.to_string(),
<a href=#245 id=245 data-nosnippet>245</a> <span class="string">"public"</span>.to_string(),
<a href=#246 id=246 data-nosnippet>246</a> <span class="string">"Test_Db"</span>.to_string(),
<a href=#247 id=247 data-nosnippet>247</a> ];
<a href=#248 id=248 data-nosnippet>248</a>
<a href=#249 id=249 data-nosnippet>249</a> <span class="kw">let </span>canonicalized = dedupe_canonicalized_schemas(<span class="kw-2">&amp;</span>requested, <span class="kw-2">&amp;</span>available, <span class="string">"greptime"</span>)
<a href=#250 id=250 data-nosnippet>250</a> .expect(<span class="string">"schemas should be canonicalized"</span>);
<a href=#251 id=251 data-nosnippet>251</a>
<a href=#252 id=252 data-nosnippet>252</a> <span class="macro">assert_eq!</span>(canonicalized, <span class="macro">vec!</span>[<span class="string">"public"</span>, <span class="string">"test_db"</span>]);
<a href=#253 id=253 data-nosnippet>253</a> }
<a href=#254 id=254 data-nosnippet>254</a>}
</code></pre></div></section></main></body></html>