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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/partition/src/cache.rs`."><title>cache.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="partition" data-themes="" data-resource-suffix="" data-rustdoc-version="1.96.0-nightly (ac7f9ec7d 2026-03-20)" data-channel="nightly" data-search-js="search-63369b7b.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">partition/</div>cache.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
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<a href=#2 id=2 data-nosnippet>2</a>//
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<a href=#3 id=3 data-nosnippet>3</a>// Licensed under the Apache License, Version 2.0 (the "License");
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<a href=#4 id=4 data-nosnippet>4</a>// you may not use this file except in compliance with the License.
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<a href=#5 id=5 data-nosnippet>5</a>// You may obtain a copy of the License at
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<a href=#6 id=6 data-nosnippet>6</a>//
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<a href=#7 id=7 data-nosnippet>7</a>// http://www.apache.org/licenses/LICENSE-2.0
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<a href=#8 id=8 data-nosnippet>8</a>//
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<a href=#9 id=9 data-nosnippet>9</a>// Unless required by applicable law or agreed to in writing, software
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<a href=#10 id=10 data-nosnippet>10</a>// distributed under the License is distributed on an "AS IS" BASIS,
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<a href=#11 id=11 data-nosnippet>11</a>// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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<a href=#12 id=12 data-nosnippet>12</a>// See the License for the specific language governing permissions and
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<a href=#13 id=13 data-nosnippet>13</a>// limitations under the License.
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<a href=#14 id=14 data-nosnippet>14</a>
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<a href=#15 id=15 data-nosnippet>15</a></span><span class="kw">use </span>std::sync::Arc;
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<a href=#16 id=16 data-nosnippet>16</a>
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<a href=#17 id=17 data-nosnippet>17</a><span class="kw">use </span>common_base::hash::partition_expr_version;
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<a href=#18 id=18 data-nosnippet>18</a><span class="kw">use </span>common_error::ext::BoxedError;
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<a href=#19 id=19 data-nosnippet>19</a><span class="kw">use </span>common_meta::cache::{
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<a href=#20 id=20 data-nosnippet>20</a> CacheContainer, InitStrategy, Initializer, TableRoute, TableRouteCacheRef,
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<a href=#21 id=21 data-nosnippet>21</a>};
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<a href=#22 id=22 data-nosnippet>22</a><span class="kw">use </span>common_meta::instruction::CacheIdent;
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<a href=#23 id=23 data-nosnippet>23</a><span class="kw">use </span>common_meta::rpc::router::RegionRoute;
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<a href=#24 id=24 data-nosnippet>24</a><span class="kw">use </span>moka::future::Cache;
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<a href=#25 id=25 data-nosnippet>25</a><span class="kw">use </span>snafu::ResultExt;
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<a href=#26 id=26 data-nosnippet>26</a><span class="kw">use </span>store_api::storage::{RegionId, TableId};
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<a href=#27 id=27 data-nosnippet>27</a>
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<a href=#28 id=28 data-nosnippet>28</a><span class="kw">use </span><span class="kw">crate</span>::expr::PartitionExpr;
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<a href=#29 id=29 data-nosnippet>29</a><span class="kw">use </span><span class="kw">crate</span>::manager::PartitionInfoWithVersion;
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<a href=#30 id=30 data-nosnippet>30</a>
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<a href=#31 id=31 data-nosnippet>31</a><span class="attr">#[derive(Debug, Clone)]
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<a href=#32 id=32 data-nosnippet>32</a></span><span class="kw">pub struct </span>PhysicalPartitionInfo {
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<a href=#33 id=33 data-nosnippet>33</a> <span class="kw">pub </span>partitions: Vec<PartitionInfoWithVersion>,
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<a href=#34 id=34 data-nosnippet>34</a>}
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<a href=#35 id=35 data-nosnippet>35</a>
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<a href=#36 id=36 data-nosnippet>36</a><span class="attr">#[derive(Debug, Clone)]
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<a href=#37 id=37 data-nosnippet>37</a></span><span class="kw">pub enum </span>CachedPartitionInfo {
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<a href=#38 id=38 data-nosnippet>38</a> Physical(Arc<PhysicalPartitionInfo>),
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<a href=#39 id=39 data-nosnippet>39</a> Logical(TableId),
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<a href=#40 id=40 data-nosnippet>40</a>}
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<a href=#41 id=41 data-nosnippet>41</a>
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<a href=#42 id=42 data-nosnippet>42</a><span class="kw">impl </span>CachedPartitionInfo {
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<a href=#43 id=43 data-nosnippet>43</a> <span class="doccomment">/// Returns the physical partitions if the cached partition info is physical.
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<a href=#44 id=44 data-nosnippet>44</a> </span><span class="kw">pub fn </span>into_physical(<span class="self">self</span>) -> <span class="prelude-ty">Option</span><Arc<PhysicalPartitionInfo>> {
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<a href=#45 id=45 data-nosnippet>45</a> <span class="kw">match </span><span class="self">self </span>{
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<a href=#46 id=46 data-nosnippet>46</a> CachedPartitionInfo::Physical(partitions) => <span class="prelude-val">Some</span>(partitions),
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<a href=#47 id=47 data-nosnippet>47</a> CachedPartitionInfo::Logical(<span class="kw">_</span>) => <span class="prelude-val">None</span>,
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<a href=#48 id=48 data-nosnippet>48</a> }
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<a href=#49 id=49 data-nosnippet>49</a> }
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<a href=#50 id=50 data-nosnippet>50</a>}
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<a href=#51 id=51 data-nosnippet>51</a>
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<a href=#52 id=52 data-nosnippet>52</a><span class="kw">pub type </span>PartitionInfoCache = CacheContainer<TableId, CachedPartitionInfo, CacheIdent>;
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<a href=#53 id=53 data-nosnippet>53</a>
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<a href=#54 id=54 data-nosnippet>54</a><span class="kw">pub type </span>PartitionInfoCacheRef = Arc<PartitionInfoCache>;
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<a href=#55 id=55 data-nosnippet>55</a>
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<a href=#56 id=56 data-nosnippet>56</a><span class="kw">pub fn </span>create_partitions_with_version_from_region_routes(
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<a href=#57 id=57 data-nosnippet>57</a> table_id: TableId,
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<a href=#58 id=58 data-nosnippet>58</a> region_routes: <span class="kw-2">&</span>[RegionRoute],
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<a href=#59 id=59 data-nosnippet>59</a>) -> common_meta::error::Result<Vec<PartitionInfoWithVersion>> {
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<a href=#60 id=60 data-nosnippet>60</a> <span class="kw">let </span><span class="kw-2">mut </span>partitions = Vec::with_capacity(region_routes.len());
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<a href=#61 id=61 data-nosnippet>61</a> <span class="kw">for </span>r <span class="kw">in </span>region_routes {
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<a href=#62 id=62 data-nosnippet>62</a> <span class="comment">// Ignore regions marked as reject-all-writes; they should not participate
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<a href=#63 id=63 data-nosnippet>63</a> // in writable partition-cache construction.
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<a href=#64 id=64 data-nosnippet>64</a> </span><span class="kw">if </span>r.is_ignore_all_writes() {
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<a href=#65 id=65 data-nosnippet>65</a> <span class="kw">continue</span>;
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<a href=#66 id=66 data-nosnippet>66</a> }
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<a href=#67 id=67 data-nosnippet>67</a>
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<a href=#68 id=68 data-nosnippet>68</a> <span class="kw">let </span>expr_json = r.region.partition_expr();
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<a href=#69 id=69 data-nosnippet>69</a> <span class="kw">let </span>partition_expr_version = <span class="kw">if </span>expr_json.is_empty() {
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<a href=#70 id=70 data-nosnippet>70</a> <span class="prelude-val">None
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<a href=#71 id=71 data-nosnippet>71</a> </span>} <span class="kw">else </span>{
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<a href=#72 id=72 data-nosnippet>72</a> <span class="prelude-val">Some</span>(partition_expr_version(<span class="prelude-val">Some</span>(expr_json.as_str())))
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<a href=#73 id=73 data-nosnippet>73</a> };
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<a href=#74 id=74 data-nosnippet>74</a> <span class="kw">let </span>partition_expr = PartitionExpr::from_json_str(expr_json.as_str())
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<a href=#75 id=75 data-nosnippet>75</a> .map_err(BoxedError::new)
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<a href=#76 id=76 data-nosnippet>76</a> .context(common_meta::error::ExternalSnafu)<span class="question-mark">?</span>;
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<a href=#77 id=77 data-nosnippet>77</a> <span class="kw">let </span>id = RegionId::new(table_id, r.region.id.region_number());
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<a href=#78 id=78 data-nosnippet>78</a> partitions.push(PartitionInfoWithVersion {
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<a href=#79 id=79 data-nosnippet>79</a> id,
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<a href=#80 id=80 data-nosnippet>80</a> partition_expr,
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<a href=#81 id=81 data-nosnippet>81</a> partition_expr_version,
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<a href=#82 id=82 data-nosnippet>82</a> });
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<a href=#83 id=83 data-nosnippet>83</a> }
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<a href=#84 id=84 data-nosnippet>84</a>
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<a href=#85 id=85 data-nosnippet>85</a> <span class="prelude-val">Ok</span>(partitions)
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<a href=#86 id=86 data-nosnippet>86</a>}
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<a href=#87 id=87 data-nosnippet>87</a>
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<a href=#88 id=88 data-nosnippet>88</a><span class="kw">fn </span>init_factory(
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<a href=#89 id=89 data-nosnippet>89</a> table_route_cache: TableRouteCacheRef,
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<a href=#90 id=90 data-nosnippet>90</a>) -> Initializer<TableId, CachedPartitionInfo> {
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<a href=#91 id=91 data-nosnippet>91</a> Arc::new(<span class="kw">move </span>|table_id: <span class="kw-2">&</span>TableId| {
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<a href=#92 id=92 data-nosnippet>92</a> <span class="kw">let </span>table_route_cache = table_route_cache.clone();
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<a href=#93 id=93 data-nosnippet>93</a> Box::pin(<span class="kw">async move </span>{
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<a href=#94 id=94 data-nosnippet>94</a> <span class="kw">let </span><span class="prelude-val">Some</span>(table_route) = table_route_cache.get(<span class="kw-2">*</span>table_id).<span class="kw">await</span><span class="question-mark">? </span><span class="kw">else </span>{
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<a href=#95 id=95 data-nosnippet>95</a> <span class="kw">return </span><span class="prelude-val">Ok</span>(<span class="prelude-val">None</span>);
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<a href=#96 id=96 data-nosnippet>96</a> };
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<a href=#97 id=97 data-nosnippet>97</a>
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<a href=#98 id=98 data-nosnippet>98</a> <span class="kw">let </span>cached = <span class="kw">match </span>table_route.as_ref() {
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<a href=#99 id=99 data-nosnippet>99</a> TableRoute::Physical(physical) => {
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<a href=#100 id=100 data-nosnippet>100</a> <span class="kw">let </span>partitions = create_partitions_with_version_from_region_routes(
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<a href=#101 id=101 data-nosnippet>101</a> <span class="kw-2">*</span>table_id,
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<a href=#102 id=102 data-nosnippet>102</a> <span class="kw-2">&</span>physical.region_routes,
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<a href=#103 id=103 data-nosnippet>103</a> )<span class="question-mark">?</span>;
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<a href=#104 id=104 data-nosnippet>104</a>
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<a href=#105 id=105 data-nosnippet>105</a> CachedPartitionInfo::Physical(Arc::new(PhysicalPartitionInfo { partitions }))
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<a href=#106 id=106 data-nosnippet>106</a> }
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<a href=#107 id=107 data-nosnippet>107</a> TableRoute::Logical(logical) => {
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<a href=#108 id=108 data-nosnippet>108</a> <span class="kw">let </span>table_id = logical.physical_table_id();
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<a href=#109 id=109 data-nosnippet>109</a> CachedPartitionInfo::Logical(table_id)
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<a href=#110 id=110 data-nosnippet>110</a> }
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<a href=#111 id=111 data-nosnippet>111</a> };
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<a href=#112 id=112 data-nosnippet>112</a>
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<a href=#113 id=113 data-nosnippet>113</a> <span class="prelude-val">Ok</span>(<span class="prelude-val">Some</span>(cached))
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<a href=#114 id=114 data-nosnippet>114</a> })
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<a href=#115 id=115 data-nosnippet>115</a> })
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<a href=#116 id=116 data-nosnippet>116</a>}
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<a href=#117 id=117 data-nosnippet>117</a>
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<a href=#118 id=118 data-nosnippet>118</a><span class="kw">pub fn </span>new_partition_info_cache(
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<a href=#119 id=119 data-nosnippet>119</a> name: String,
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<a href=#120 id=120 data-nosnippet>120</a> cache: Cache<TableId, CachedPartitionInfo>,
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<a href=#121 id=121 data-nosnippet>121</a> table_route_cache: TableRouteCacheRef,
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<a href=#122 id=122 data-nosnippet>122</a>) -> PartitionInfoCache {
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<a href=#123 id=123 data-nosnippet>123</a> CacheContainer::with_strategy(
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<a href=#124 id=124 data-nosnippet>124</a> name,
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<a href=#125 id=125 data-nosnippet>125</a> cache,
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<a href=#126 id=126 data-nosnippet>126</a> Box::new(|cache, idents| {
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<a href=#127 id=127 data-nosnippet>127</a> Box::pin(<span class="kw">async move </span>{
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<a href=#128 id=128 data-nosnippet>128</a> <span class="kw">for </span>ident <span class="kw">in </span>idents {
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<a href=#129 id=129 data-nosnippet>129</a> <span class="kw">if let </span>CacheIdent::TableId(table_id) = ident {
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<a href=#130 id=130 data-nosnippet>130</a> cache.invalidate(table_id).<span class="kw">await
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<a href=#131 id=131 data-nosnippet>131</a> </span>}
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<a href=#132 id=132 data-nosnippet>132</a> }
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<a href=#133 id=133 data-nosnippet>133</a> <span class="prelude-val">Ok</span>(())
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<a href=#134 id=134 data-nosnippet>134</a> })
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<a href=#135 id=135 data-nosnippet>135</a> }),
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<a href=#136 id=136 data-nosnippet>136</a> init_factory(table_route_cache),
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<a href=#137 id=137 data-nosnippet>137</a> |ident| <span class="macro">matches!</span>(ident, CacheIdent::TableId(<span class="kw">_</span>)),
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<a href=#138 id=138 data-nosnippet>138</a> InitStrategy::VersionChecked,
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<a href=#139 id=139 data-nosnippet>139</a> )
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<a href=#140 id=140 data-nosnippet>140</a>}
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<a href=#141 id=141 data-nosnippet>141</a>
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<a href=#142 id=142 data-nosnippet>142</a><span class="attr">#[cfg(test)]
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<a href=#143 id=143 data-nosnippet>143</a></span><span class="kw">mod </span>tests {
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<a href=#144 id=144 data-nosnippet>144</a> <span class="kw">use </span>common_base::hash::partition_expr_version;
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<a href=#145 id=145 data-nosnippet>145</a> <span class="kw">use </span>common_meta::rpc::router::{Region, RegionRoute, WriteRoutePolicy};
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<a href=#146 id=146 data-nosnippet>146</a> <span class="kw">use </span>store_api::storage::RegionId;
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<a href=#147 id=147 data-nosnippet>147</a>
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<a href=#148 id=148 data-nosnippet>148</a> <span class="kw">use </span><span class="kw">super</span>::create_partitions_with_version_from_region_routes;
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<a href=#149 id=149 data-nosnippet>149</a>
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<a href=#150 id=150 data-nosnippet>150</a> <span class="attr">#[test]
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<a href=#151 id=151 data-nosnippet>151</a> </span><span class="kw">fn </span>test_create_partitions_with_version_excludes_reject_all_writes() {
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<a href=#152 id=152 data-nosnippet>152</a> <span class="kw">let </span>table_id = <span class="number">1024</span>;
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<a href=#153 id=153 data-nosnippet>153</a> <span class="kw">let </span>expr_json =
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<a href=#154 id=154 data-nosnippet>154</a> <span class="string">r#"{"Expr":{"lhs":{"Column":"a"},"op":"GtEq","rhs":{"Value":{"UInt32":10}}}}"#</span>;
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<a href=#155 id=155 data-nosnippet>155</a> <span class="kw">let </span>region_routes = <span class="macro">vec!</span>[
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<a href=#156 id=156 data-nosnippet>156</a> RegionRoute {
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<a href=#157 id=157 data-nosnippet>157</a> region: Region {
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<a href=#158 id=158 data-nosnippet>158</a> id: RegionId::new(table_id, <span class="number">1</span>),
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<a href=#159 id=159 data-nosnippet>159</a> partition_expr: expr_json.to_string(),
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<a href=#160 id=160 data-nosnippet>160</a> ..Default::default()
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<a href=#161 id=161 data-nosnippet>161</a> },
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<a href=#162 id=162 data-nosnippet>162</a> leader_peer: <span class="prelude-val">None</span>,
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<a href=#163 id=163 data-nosnippet>163</a> follower_peers: <span class="macro">vec!</span>[],
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<a href=#164 id=164 data-nosnippet>164</a> leader_state: <span class="prelude-val">None</span>,
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<a href=#165 id=165 data-nosnippet>165</a> leader_down_since: <span class="prelude-val">None</span>,
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<a href=#166 id=166 data-nosnippet>166</a> write_route_policy: <span class="prelude-val">Some</span>(WriteRoutePolicy::IgnoreAllWrites),
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<a href=#167 id=167 data-nosnippet>167</a> },
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<a href=#168 id=168 data-nosnippet>168</a> RegionRoute {
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<a href=#169 id=169 data-nosnippet>169</a> region: Region {
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<a href=#170 id=170 data-nosnippet>170</a> id: RegionId::new(table_id, <span class="number">2</span>),
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<a href=#171 id=171 data-nosnippet>171</a> partition_expr: expr_json.to_string(),
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<a href=#172 id=172 data-nosnippet>172</a> ..Default::default()
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<a href=#173 id=173 data-nosnippet>173</a> },
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<a href=#174 id=174 data-nosnippet>174</a> ..Default::default()
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<a href=#175 id=175 data-nosnippet>175</a> },
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<a href=#176 id=176 data-nosnippet>176</a> ];
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<a href=#177 id=177 data-nosnippet>177</a>
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<a href=#178 id=178 data-nosnippet>178</a> <span class="kw">let </span>partitions =
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<a href=#179 id=179 data-nosnippet>179</a> create_partitions_with_version_from_region_routes(table_id, <span class="kw-2">&</span>region_routes).unwrap();
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<a href=#180 id=180 data-nosnippet>180</a> <span class="macro">assert_eq!</span>(<span class="number">1</span>, partitions.len());
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<a href=#181 id=181 data-nosnippet>181</a> <span class="macro">assert_eq!</span>(RegionId::new(table_id, <span class="number">2</span>), partitions[<span class="number">0</span>].id);
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<a href=#182 id=182 data-nosnippet>182</a> <span class="macro">assert_eq!</span>(
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<a href=#183 id=183 data-nosnippet>183</a> <span class="prelude-val">Some</span>(partition_expr_version(<span class="prelude-val">Some</span>(expr_json))),
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<a href=#184 id=184 data-nosnippet>184</a> partitions[<span class="number">0</span>].partition_expr_version
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<a href=#185 id=185 data-nosnippet>185</a> );
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<a href=#186 id=186 data-nosnippet>186</a> }
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<a href=#187 id=187 data-nosnippet>187</a>}
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</code></pre></div></section></main></body></html> |