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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/cache/src/lib.rs`."><title>lib.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-e56847b5.css"><meta name="rustdoc-vars" data-root-path="../../" data-static-root-path="../../static.files/" data-current-crate="cache" data-themes="" data-resource-suffix="" data-rustdoc-version="1.92.0-nightly (fa3155a64 2025-09-30)" data-channel="nightly" data-search-js="search-e256b49e.js" data-stringdex-js="stringdex-828709d0.js" data-settings-js="settings-c38705f0.js" ><script src="../../static.files/storage-e2aeef58.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-ce535bd0.js"></script><noscript><link rel="stylesheet" href="../../static.files/noscript-263c88ec.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"><!--[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"><div class="main-heading"><h1><div class="sub-heading">cache/</div>lib.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="kw">pub mod </span>error;
<a href=#16 id=16 data-nosnippet>16</a>
<a href=#17 id=17 data-nosnippet>17</a><span class="kw">use </span>std::hash::Hash;
<a href=#18 id=18 data-nosnippet>18</a><span class="kw">use </span>std::sync::Arc;
<a href=#19 id=19 data-nosnippet>19</a><span class="kw">use </span>std::time::Duration;
<a href=#20 id=20 data-nosnippet>20</a>
<a href=#21 id=21 data-nosnippet>21</a><span class="kw">use </span>catalog::kvbackend::new_table_cache;
<a href=#22 id=22 data-nosnippet>22</a><span class="kw">use </span>common_meta::cache::{
<a href=#23 id=23 data-nosnippet>23</a> CacheRegistry, CacheRegistryBuilder, LayeredCacheRegistryBuilder, new_schema_cache,
<a href=#24 id=24 data-nosnippet>24</a> new_table_flownode_set_cache, new_table_info_cache, new_table_name_cache,
<a href=#25 id=25 data-nosnippet>25</a> new_table_route_cache, new_table_schema_cache, new_view_info_cache,
<a href=#26 id=26 data-nosnippet>26</a>};
<a href=#27 id=27 data-nosnippet>27</a><span class="kw">use </span>common_meta::kv_backend::KvBackendRef;
<a href=#28 id=28 data-nosnippet>28</a><span class="kw">use </span>moka::future::{Cache, CacheBuilder};
<a href=#29 id=29 data-nosnippet>29</a><span class="kw">use </span>partition::cache::new_partition_info_cache;
<a href=#30 id=30 data-nosnippet>30</a><span class="kw">use </span>snafu::OptionExt;
<a href=#31 id=31 data-nosnippet>31</a>
<a href=#32 id=32 data-nosnippet>32</a><span class="kw">use </span><span class="kw">crate</span>::error::Result;
<a href=#33 id=33 data-nosnippet>33</a>
<a href=#34 id=34 data-nosnippet>34</a><span class="kw">const </span>DEFAULT_CACHE_MAX_CAPACITY: u64 = <span class="number">65536</span>;
<a href=#35 id=35 data-nosnippet>35</a><span class="kw">const </span>DEFAULT_CACHE_TTL: Duration = Duration::from_secs(<span class="number">10 </span>* <span class="number">60</span>);
<a href=#36 id=36 data-nosnippet>36</a><span class="kw">const </span>DEFAULT_CACHE_TTI: Duration = Duration::from_secs(<span class="number">5 </span>* <span class="number">60</span>);
<a href=#37 id=37 data-nosnippet>37</a>
<a href=#38 id=38 data-nosnippet>38</a><span class="kw">fn </span>default_cache&lt;K: Send + Sync + Hash + Eq + <span class="lifetime">'static</span>, V: Send + Sync + Clone + <span class="lifetime">'static</span>&gt;()
<a href=#39 id=39 data-nosnippet>39</a>-&gt; Cache&lt;K, V&gt; {
<a href=#40 id=40 data-nosnippet>40</a> CacheBuilder::new(DEFAULT_CACHE_MAX_CAPACITY)
<a href=#41 id=41 data-nosnippet>41</a> .time_to_live(DEFAULT_CACHE_TTL)
<a href=#42 id=42 data-nosnippet>42</a> .time_to_idle(DEFAULT_CACHE_TTI)
<a href=#43 id=43 data-nosnippet>43</a> .build()
<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="kw">pub const </span>TABLE_INFO_CACHE_NAME: <span class="kw-2">&amp;</span>str = <span class="string">"table_info_cache"</span>;
<a href=#47 id=47 data-nosnippet>47</a><span class="kw">pub const </span>VIEW_INFO_CACHE_NAME: <span class="kw-2">&amp;</span>str = <span class="string">"view_info_cache"</span>;
<a href=#48 id=48 data-nosnippet>48</a><span class="kw">pub const </span>TABLE_NAME_CACHE_NAME: <span class="kw-2">&amp;</span>str = <span class="string">"table_name_cache"</span>;
<a href=#49 id=49 data-nosnippet>49</a><span class="kw">pub const </span>TABLE_CACHE_NAME: <span class="kw-2">&amp;</span>str = <span class="string">"table_cache"</span>;
<a href=#50 id=50 data-nosnippet>50</a><span class="kw">pub const </span>SCHEMA_CACHE_NAME: <span class="kw-2">&amp;</span>str = <span class="string">"schema_cache"</span>;
<a href=#51 id=51 data-nosnippet>51</a><span class="kw">pub const </span>TABLE_SCHEMA_NAME_CACHE_NAME: <span class="kw-2">&amp;</span>str = <span class="string">"table_schema_name_cache"</span>;
<a href=#52 id=52 data-nosnippet>52</a><span class="kw">pub const </span>TABLE_FLOWNODE_SET_CACHE_NAME: <span class="kw-2">&amp;</span>str = <span class="string">"table_flownode_set_cache"</span>;
<a href=#53 id=53 data-nosnippet>53</a><span class="kw">pub const </span>TABLE_ROUTE_CACHE_NAME: <span class="kw-2">&amp;</span>str = <span class="string">"table_route_cache"</span>;
<a href=#54 id=54 data-nosnippet>54</a><span class="kw">pub const </span>PARTITION_INFO_CACHE_NAME: <span class="kw-2">&amp;</span>str = <span class="string">"partition_info_cache"</span>;
<a href=#55 id=55 data-nosnippet>55</a>
<a href=#56 id=56 data-nosnippet>56</a><span class="doccomment">/// Builds cache registry for datanode, including:
<a href=#57 id=57 data-nosnippet>57</a>/// - Schema cache.
<a href=#58 id=58 data-nosnippet>58</a>/// - Table id to schema name cache.
<a href=#59 id=59 data-nosnippet>59</a></span><span class="kw">pub fn </span>build_datanode_cache_registry(kv_backend: KvBackendRef) -&gt; CacheRegistry {
<a href=#60 id=60 data-nosnippet>60</a> <span class="comment">// Builds table id schema name cache that never expires.
<a href=#61 id=61 data-nosnippet>61</a> </span><span class="kw">let </span>cache = CacheBuilder::new(DEFAULT_CACHE_MAX_CAPACITY).build();
<a href=#62 id=62 data-nosnippet>62</a> <span class="kw">let </span>table_id_schema_cache = Arc::new(new_table_schema_cache(
<a href=#63 id=63 data-nosnippet>63</a> TABLE_SCHEMA_NAME_CACHE_NAME.to_string(),
<a href=#64 id=64 data-nosnippet>64</a> cache,
<a href=#65 id=65 data-nosnippet>65</a> kv_backend.clone(),
<a href=#66 id=66 data-nosnippet>66</a> ));
<a href=#67 id=67 data-nosnippet>67</a>
<a href=#68 id=68 data-nosnippet>68</a> <span class="comment">// Builds schema cache
<a href=#69 id=69 data-nosnippet>69</a> </span><span class="kw">let </span>cache = default_cache();
<a href=#70 id=70 data-nosnippet>70</a> <span class="kw">let </span>schema_cache = Arc::new(new_schema_cache(
<a href=#71 id=71 data-nosnippet>71</a> SCHEMA_CACHE_NAME.to_string(),
<a href=#72 id=72 data-nosnippet>72</a> cache,
<a href=#73 id=73 data-nosnippet>73</a> kv_backend.clone(),
<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> CacheRegistryBuilder::default()
<a href=#77 id=77 data-nosnippet>77</a> .add_cache(table_id_schema_cache)
<a href=#78 id=78 data-nosnippet>78</a> .add_cache(schema_cache)
<a href=#79 id=79 data-nosnippet>79</a> .build()
<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><span class="doccomment">/// Builds cache registry for frontend and datanode, including:
<a href=#83 id=83 data-nosnippet>83</a>/// - Table info cache
<a href=#84 id=84 data-nosnippet>84</a>/// - Table name cache
<a href=#85 id=85 data-nosnippet>85</a>/// - Table route cache
<a href=#86 id=86 data-nosnippet>86</a>/// - Table flow node cache
<a href=#87 id=87 data-nosnippet>87</a>/// - View cache
<a href=#88 id=88 data-nosnippet>88</a>/// - Schema cache
<a href=#89 id=89 data-nosnippet>89</a></span><span class="kw">pub fn </span>build_fundamental_cache_registry(kv_backend: KvBackendRef) -&gt; CacheRegistry {
<a href=#90 id=90 data-nosnippet>90</a> <span class="comment">// Builds table info cache
<a href=#91 id=91 data-nosnippet>91</a> </span><span class="kw">let </span>cache = default_cache();
<a href=#92 id=92 data-nosnippet>92</a> <span class="kw">let </span>table_info_cache = Arc::new(new_table_info_cache(
<a href=#93 id=93 data-nosnippet>93</a> TABLE_INFO_CACHE_NAME.to_string(),
<a href=#94 id=94 data-nosnippet>94</a> cache,
<a href=#95 id=95 data-nosnippet>95</a> kv_backend.clone(),
<a href=#96 id=96 data-nosnippet>96</a> ));
<a href=#97 id=97 data-nosnippet>97</a>
<a href=#98 id=98 data-nosnippet>98</a> <span class="comment">// Builds table name cache
<a href=#99 id=99 data-nosnippet>99</a> </span><span class="kw">let </span>cache = default_cache();
<a href=#100 id=100 data-nosnippet>100</a> <span class="kw">let </span>table_name_cache = Arc::new(new_table_name_cache(
<a href=#101 id=101 data-nosnippet>101</a> TABLE_NAME_CACHE_NAME.to_string(),
<a href=#102 id=102 data-nosnippet>102</a> cache,
<a href=#103 id=103 data-nosnippet>103</a> kv_backend.clone(),
<a href=#104 id=104 data-nosnippet>104</a> ));
<a href=#105 id=105 data-nosnippet>105</a>
<a href=#106 id=106 data-nosnippet>106</a> <span class="comment">// Builds table route cache
<a href=#107 id=107 data-nosnippet>107</a> </span><span class="kw">let </span>cache = default_cache();
<a href=#108 id=108 data-nosnippet>108</a> <span class="kw">let </span>table_route_cache = Arc::new(new_table_route_cache(
<a href=#109 id=109 data-nosnippet>109</a> TABLE_ROUTE_CACHE_NAME.to_string(),
<a href=#110 id=110 data-nosnippet>110</a> cache,
<a href=#111 id=111 data-nosnippet>111</a> kv_backend.clone(),
<a href=#112 id=112 data-nosnippet>112</a> ));
<a href=#113 id=113 data-nosnippet>113</a>
<a href=#114 id=114 data-nosnippet>114</a> <span class="comment">// Builds table flownode set cache
<a href=#115 id=115 data-nosnippet>115</a> </span><span class="kw">let </span>cache = default_cache();
<a href=#116 id=116 data-nosnippet>116</a> <span class="kw">let </span>table_flownode_set_cache = Arc::new(new_table_flownode_set_cache(
<a href=#117 id=117 data-nosnippet>117</a> TABLE_FLOWNODE_SET_CACHE_NAME.to_string(),
<a href=#118 id=118 data-nosnippet>118</a> cache,
<a href=#119 id=119 data-nosnippet>119</a> kv_backend.clone(),
<a href=#120 id=120 data-nosnippet>120</a> ));
<a href=#121 id=121 data-nosnippet>121</a> <span class="comment">// Builds the view info cache
<a href=#122 id=122 data-nosnippet>122</a> </span><span class="kw">let </span>cache = default_cache();
<a href=#123 id=123 data-nosnippet>123</a> <span class="kw">let </span>view_info_cache = Arc::new(new_view_info_cache(
<a href=#124 id=124 data-nosnippet>124</a> VIEW_INFO_CACHE_NAME.to_string(),
<a href=#125 id=125 data-nosnippet>125</a> cache,
<a href=#126 id=126 data-nosnippet>126</a> kv_backend.clone(),
<a href=#127 id=127 data-nosnippet>127</a> ));
<a href=#128 id=128 data-nosnippet>128</a>
<a href=#129 id=129 data-nosnippet>129</a> <span class="comment">// Builds schema cache
<a href=#130 id=130 data-nosnippet>130</a> </span><span class="kw">let </span>cache = default_cache();
<a href=#131 id=131 data-nosnippet>131</a> <span class="kw">let </span>schema_cache = Arc::new(new_schema_cache(
<a href=#132 id=132 data-nosnippet>132</a> SCHEMA_CACHE_NAME.to_string(),
<a href=#133 id=133 data-nosnippet>133</a> cache,
<a href=#134 id=134 data-nosnippet>134</a> kv_backend.clone(),
<a href=#135 id=135 data-nosnippet>135</a> ));
<a href=#136 id=136 data-nosnippet>136</a>
<a href=#137 id=137 data-nosnippet>137</a> <span class="kw">let </span>table_id_schema_cache = Arc::new(new_table_schema_cache(
<a href=#138 id=138 data-nosnippet>138</a> TABLE_SCHEMA_NAME_CACHE_NAME.to_string(),
<a href=#139 id=139 data-nosnippet>139</a> CacheBuilder::new(DEFAULT_CACHE_MAX_CAPACITY).build(),
<a href=#140 id=140 data-nosnippet>140</a> kv_backend,
<a href=#141 id=141 data-nosnippet>141</a> ));
<a href=#142 id=142 data-nosnippet>142</a> CacheRegistryBuilder::default()
<a href=#143 id=143 data-nosnippet>143</a> .add_cache(table_info_cache)
<a href=#144 id=144 data-nosnippet>144</a> .add_cache(table_name_cache)
<a href=#145 id=145 data-nosnippet>145</a> .add_cache(table_route_cache)
<a href=#146 id=146 data-nosnippet>146</a> .add_cache(view_info_cache)
<a href=#147 id=147 data-nosnippet>147</a> .add_cache(table_flownode_set_cache)
<a href=#148 id=148 data-nosnippet>148</a> .add_cache(schema_cache)
<a href=#149 id=149 data-nosnippet>149</a> .add_cache(table_id_schema_cache)
<a href=#150 id=150 data-nosnippet>150</a> .build()
<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><span class="comment">// TODO(weny): Make the cache configurable.
<a href=#154 id=154 data-nosnippet>154</a></span><span class="kw">pub fn </span>with_default_composite_cache_registry(
<a href=#155 id=155 data-nosnippet>155</a> builder: LayeredCacheRegistryBuilder,
<a href=#156 id=156 data-nosnippet>156</a>) -&gt; <span class="prelude-ty">Result</span>&lt;LayeredCacheRegistryBuilder&gt; {
<a href=#157 id=157 data-nosnippet>157</a> <span class="kw">let </span>table_info_cache = builder.get().context(error::CacheRequiredSnafu {
<a href=#158 id=158 data-nosnippet>158</a> name: TABLE_INFO_CACHE_NAME,
<a href=#159 id=159 data-nosnippet>159</a> })<span class="question-mark">?</span>;
<a href=#160 id=160 data-nosnippet>160</a> <span class="kw">let </span>table_name_cache = builder.get().context(error::CacheRequiredSnafu {
<a href=#161 id=161 data-nosnippet>161</a> name: TABLE_NAME_CACHE_NAME,
<a href=#162 id=162 data-nosnippet>162</a> })<span class="question-mark">?</span>;
<a href=#163 id=163 data-nosnippet>163</a> <span class="kw">let </span>table_route_cache = builder.get().context(error::CacheRequiredSnafu {
<a href=#164 id=164 data-nosnippet>164</a> name: TABLE_ROUTE_CACHE_NAME,
<a href=#165 id=165 data-nosnippet>165</a> })<span class="question-mark">?</span>;
<a href=#166 id=166 data-nosnippet>166</a>
<a href=#167 id=167 data-nosnippet>167</a> <span class="comment">// Builds table cache
<a href=#168 id=168 data-nosnippet>168</a> </span><span class="kw">let </span>cache = default_cache();
<a href=#169 id=169 data-nosnippet>169</a> <span class="kw">let </span>table_cache = Arc::new(new_table_cache(
<a href=#170 id=170 data-nosnippet>170</a> TABLE_CACHE_NAME.to_string(),
<a href=#171 id=171 data-nosnippet>171</a> cache,
<a href=#172 id=172 data-nosnippet>172</a> table_info_cache,
<a href=#173 id=173 data-nosnippet>173</a> table_name_cache,
<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">let </span>cache = default_cache();
<a href=#177 id=177 data-nosnippet>177</a> <span class="kw">let </span>partition_info_cache = Arc::new(new_partition_info_cache(
<a href=#178 id=178 data-nosnippet>178</a> PARTITION_INFO_CACHE_NAME.to_string(),
<a href=#179 id=179 data-nosnippet>179</a> cache,
<a href=#180 id=180 data-nosnippet>180</a> table_route_cache,
<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">let </span>registry = CacheRegistryBuilder::default()
<a href=#184 id=184 data-nosnippet>184</a> .add_cache(table_cache)
<a href=#185 id=185 data-nosnippet>185</a> .add_cache(partition_info_cache)
<a href=#186 id=186 data-nosnippet>186</a> .build();
<a href=#187 id=187 data-nosnippet>187</a>
<a href=#188 id=188 data-nosnippet>188</a> <span class="prelude-val">Ok</span>(builder.add_cache_registry(registry))
<a href=#189 id=189 data-nosnippet>189</a>}</code></pre></div></section></main></body></html>
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