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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/catalog/src/kvbackend/client.rs`."><title>client.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="catalog" 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">catalog/kvbackend/</div>client.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::any::Any;
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<a href=#16 id=16 data-nosnippet>16</a><span class="kw">use </span>std::fmt::Debug;
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<a href=#17 id=17 data-nosnippet>17</a><span class="kw">use </span>std::sync::atomic::{AtomicUsize, Ordering};
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<a href=#18 id=18 data-nosnippet>18</a><span class="kw">use </span>std::sync::{Arc, Mutex};
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<a href=#19 id=19 data-nosnippet>19</a><span class="kw">use </span>std::time::Duration;
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<a href=#20 id=20 data-nosnippet>20</a>
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<a href=#21 id=21 data-nosnippet>21</a><span class="kw">use </span>common_error::ext::BoxedError;
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<a href=#22 id=22 data-nosnippet>22</a><span class="kw">use </span>common_meta::cache_invalidator::KvCacheInvalidator;
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<a href=#23 id=23 data-nosnippet>23</a><span class="kw">use </span>common_meta::error::Error::CacheNotGet;
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<a href=#24 id=24 data-nosnippet>24</a><span class="kw">use </span>common_meta::error::{
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<a href=#25 id=25 data-nosnippet>25</a> CacheNotGetSnafu, Error, ExternalSnafu, GetKvCacheSnafu, <span class="prelude-ty">Result</span>, UnsupportedSnafu,
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<a href=#26 id=26 data-nosnippet>26</a>};
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<a href=#27 id=27 data-nosnippet>27</a><span class="kw">use </span>common_meta::kv_backend::read_only::ReadOnlyKvBackend;
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<a href=#28 id=28 data-nosnippet>28</a><span class="kw">use </span>common_meta::kv_backend::txn::{Txn, TxnResponse};
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<a href=#29 id=29 data-nosnippet>29</a><span class="kw">use </span>common_meta::kv_backend::{KvBackend, KvBackendRef, TxnService};
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<a href=#30 id=30 data-nosnippet>30</a><span class="kw">use </span>common_meta::rpc::KeyValue;
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<a href=#31 id=31 data-nosnippet>31</a><span class="kw">use </span>common_meta::rpc::store::{
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<a href=#32 id=32 data-nosnippet>32</a> BatchDeleteRequest, BatchDeleteResponse, BatchGetRequest, BatchGetResponse, BatchPutRequest,
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<a href=#33 id=33 data-nosnippet>33</a> BatchPutResponse, CompareAndPutRequest, CompareAndPutResponse, DeleteRangeRequest,
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<a href=#34 id=34 data-nosnippet>34</a> DeleteRangeResponse, PutRequest, PutResponse, RangeRequest, RangeResponse,
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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="kw">use </span>common_telemetry::debug;
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<a href=#37 id=37 data-nosnippet>37</a><span class="kw">use </span>meta_client::client::MetaClient;
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<a href=#38 id=38 data-nosnippet>38</a><span class="kw">use </span>moka::future::{Cache, CacheBuilder};
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<a href=#39 id=39 data-nosnippet>39</a><span class="kw">use </span>snafu::{OptionExt, ResultExt};
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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><span class="kw">use </span><span class="kw">crate</span>::metrics::{
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<a href=#42 id=42 data-nosnippet>42</a> METRIC_CATALOG_KV_BATCH_GET, METRIC_CATALOG_KV_GET, METRIC_CATALOG_KV_REMOTE_GET,
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<a href=#43 id=43 data-nosnippet>43</a>};
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<a href=#44 id=44 data-nosnippet>44</a>
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<a href=#45 id=45 data-nosnippet>45</a><span class="kw">const </span>DEFAULT_CACHE_MAX_CAPACITY: u64 = <span class="number">10000</span>;
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<a href=#46 id=46 data-nosnippet>46</a><span class="kw">const </span>DEFAULT_CACHE_TTL: Duration = Duration::from_secs(<span class="number">10 </span>* <span class="number">60</span>);
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<a href=#47 id=47 data-nosnippet>47</a><span class="kw">const </span>DEFAULT_CACHE_TTI: Duration = Duration::from_secs(<span class="number">5 </span>* <span class="number">60</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><span class="kw">pub struct </span>CachedKvBackendBuilder {
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<a href=#50 id=50 data-nosnippet>50</a> cache_max_capacity: <span class="prelude-ty">Option</span><u64>,
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<a href=#51 id=51 data-nosnippet>51</a> cache_ttl: <span class="prelude-ty">Option</span><Duration>,
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<a href=#52 id=52 data-nosnippet>52</a> cache_tti: <span class="prelude-ty">Option</span><Duration>,
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<a href=#53 id=53 data-nosnippet>53</a> inner: KvBackendRef,
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<a href=#54 id=54 data-nosnippet>54</a>}
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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">impl </span>CachedKvBackendBuilder {
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<a href=#57 id=57 data-nosnippet>57</a> <span class="kw">pub fn </span>new(inner: KvBackendRef) -> <span class="self">Self </span>{
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<a href=#58 id=58 data-nosnippet>58</a> <span class="self">Self </span>{
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<a href=#59 id=59 data-nosnippet>59</a> cache_max_capacity: <span class="prelude-val">None</span>,
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<a href=#60 id=60 data-nosnippet>60</a> cache_ttl: <span class="prelude-val">None</span>,
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<a href=#61 id=61 data-nosnippet>61</a> cache_tti: <span class="prelude-val">None</span>,
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<a href=#62 id=62 data-nosnippet>62</a> inner,
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<a href=#63 id=63 data-nosnippet>63</a> }
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<a href=#64 id=64 data-nosnippet>64</a> }
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<a href=#65 id=65 data-nosnippet>65</a>
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<a href=#66 id=66 data-nosnippet>66</a> <span class="kw">pub fn </span>cache_max_capacity(<span class="kw-2">mut </span><span class="self">self</span>, cache_max_capacity: u64) -> <span class="self">Self </span>{
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<a href=#67 id=67 data-nosnippet>67</a> <span class="self">self</span>.cache_max_capacity.replace(cache_max_capacity);
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<a href=#68 id=68 data-nosnippet>68</a> <span class="self">self
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<a href=#69 id=69 data-nosnippet>69</a> </span>}
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<a href=#70 id=70 data-nosnippet>70</a>
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<a href=#71 id=71 data-nosnippet>71</a> <span class="kw">pub fn </span>cache_ttl(<span class="kw-2">mut </span><span class="self">self</span>, cache_ttl: Duration) -> <span class="self">Self </span>{
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<a href=#72 id=72 data-nosnippet>72</a> <span class="self">self</span>.cache_ttl.replace(cache_ttl);
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<a href=#73 id=73 data-nosnippet>73</a> <span class="self">self
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<a href=#74 id=74 data-nosnippet>74</a> </span>}
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<a href=#75 id=75 data-nosnippet>75</a>
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<a href=#76 id=76 data-nosnippet>76</a> <span class="kw">pub fn </span>cache_tti(<span class="kw-2">mut </span><span class="self">self</span>, cache_tti: Duration) -> <span class="self">Self </span>{
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<a href=#77 id=77 data-nosnippet>77</a> <span class="self">self</span>.cache_tti.replace(cache_tti);
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<a href=#78 id=78 data-nosnippet>78</a> <span class="self">self
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<a href=#79 id=79 data-nosnippet>79</a> </span>}
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<a href=#80 id=80 data-nosnippet>80</a>
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<a href=#81 id=81 data-nosnippet>81</a> <span class="kw">pub fn </span>build(<span class="self">self</span>) -> CachedKvBackend {
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<a href=#82 id=82 data-nosnippet>82</a> <span class="kw">let </span>cache_max_capacity = <span class="self">self
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<a href=#83 id=83 data-nosnippet>83</a> </span>.cache_max_capacity
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<a href=#84 id=84 data-nosnippet>84</a> .unwrap_or(DEFAULT_CACHE_MAX_CAPACITY);
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<a href=#85 id=85 data-nosnippet>85</a> <span class="kw">let </span>cache_ttl = <span class="self">self</span>.cache_ttl.unwrap_or(DEFAULT_CACHE_TTL);
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<a href=#86 id=86 data-nosnippet>86</a> <span class="kw">let </span>cache_tti = <span class="self">self</span>.cache_tti.unwrap_or(DEFAULT_CACHE_TTI);
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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">let </span>cache = CacheBuilder::new(cache_max_capacity)
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<a href=#89 id=89 data-nosnippet>89</a> .time_to_live(cache_ttl)
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<a href=#90 id=90 data-nosnippet>90</a> .time_to_idle(cache_tti)
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<a href=#91 id=91 data-nosnippet>91</a> .build();
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<a href=#92 id=92 data-nosnippet>92</a> <span class="kw">let </span>kv_backend = <span class="self">self</span>.inner;
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<a href=#93 id=93 data-nosnippet>93</a> <span class="kw">let </span>name = <span class="macro">format!</span>(<span class="string">"CachedKvBackend({})"</span>, kv_backend.name());
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<a href=#94 id=94 data-nosnippet>94</a> <span class="kw">let </span>version = AtomicUsize::new(<span class="number">0</span>);
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<a href=#95 id=95 data-nosnippet>95</a>
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<a href=#96 id=96 data-nosnippet>96</a> CachedKvBackend {
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<a href=#97 id=97 data-nosnippet>97</a> kv_backend,
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<a href=#98 id=98 data-nosnippet>98</a> cache,
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<a href=#99 id=99 data-nosnippet>99</a> name,
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<a href=#100 id=100 data-nosnippet>100</a> version,
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<a href=#101 id=101 data-nosnippet>101</a> }
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<a href=#102 id=102 data-nosnippet>102</a> }
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<a href=#103 id=103 data-nosnippet>103</a>}
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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><span class="kw">pub type </span>CacheBackend = Cache<Vec<u8>, KeyValue>;
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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><span class="doccomment">/// A wrapper of `MetaKvBackend` with cache support.
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<a href=#108 id=108 data-nosnippet>108</a>///
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<a href=#109 id=109 data-nosnippet>109</a>/// CachedMetaKvBackend is mainly used to read metadata information from Metasrv, and provides
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<a href=#110 id=110 data-nosnippet>110</a>/// cache for get and batch_get. One way to trigger cache invalidation of CachedMetaKvBackend:
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<a href=#111 id=111 data-nosnippet>111</a>/// when metadata information changes, Metasrv will broadcast a metadata invalidation request.
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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>/// Therefore, it is recommended to use CachedMetaKvBackend to only read metadata related
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<a href=#114 id=114 data-nosnippet>114</a>/// information. Note: If you read other information, you may read expired data, which depends on
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<a href=#115 id=115 data-nosnippet>115</a>/// TTL and TTI for cache.
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<a href=#116 id=116 data-nosnippet>116</a></span><span class="kw">pub struct </span>CachedKvBackend {
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<a href=#117 id=117 data-nosnippet>117</a> kv_backend: KvBackendRef,
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<a href=#118 id=118 data-nosnippet>118</a> cache: CacheBackend,
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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> version: AtomicUsize,
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<a href=#121 id=121 data-nosnippet>121</a>}
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<a href=#122 id=122 data-nosnippet>122</a>
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<a href=#123 id=123 data-nosnippet>123</a><span class="attr">#[async_trait::async_trait]
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<a href=#124 id=124 data-nosnippet>124</a></span><span class="kw">impl </span>TxnService <span class="kw">for </span>CachedKvBackend {
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<a href=#125 id=125 data-nosnippet>125</a> <span class="kw">type </span>Error = Error;
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<a href=#126 id=126 data-nosnippet>126</a>
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<a href=#127 id=127 data-nosnippet>127</a> <span class="kw">async fn </span>txn(<span class="kw-2">&</span><span class="self">self</span>, txn: Txn) -> std::result::Result<TxnResponse, <span class="self">Self</span>::Error> {
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<a href=#128 id=128 data-nosnippet>128</a> <span class="comment">// TODO(hl): txn of CachedKvBackend simply pass through to inner backend without invalidating caches.
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<a href=#129 id=129 data-nosnippet>129</a> </span><span class="self">self</span>.kv_backend.txn(txn).<span class="kw">await
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<a href=#130 id=130 data-nosnippet>130</a> </span>}
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<a href=#131 id=131 data-nosnippet>131</a>
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<a href=#132 id=132 data-nosnippet>132</a> <span class="kw">fn </span>max_txn_ops(<span class="kw-2">&</span><span class="self">self</span>) -> usize {
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<a href=#133 id=133 data-nosnippet>133</a> <span class="self">self</span>.kv_backend.max_txn_ops()
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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>
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<a href=#137 id=137 data-nosnippet>137</a><span class="attr">#[async_trait::async_trait]
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<a href=#138 id=138 data-nosnippet>138</a></span><span class="kw">impl </span>KvBackend <span class="kw">for </span>CachedKvBackend {
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<a href=#139 id=139 data-nosnippet>139</a> <span class="kw">fn </span>name(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw-2">&</span>str {
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<a href=#140 id=140 data-nosnippet>140</a> <span class="kw-2">&</span><span class="self">self</span>.name
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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>
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<a href=#143 id=143 data-nosnippet>143</a> <span class="kw">fn </span>as_any(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw-2">&</span><span class="kw">dyn </span>Any {
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<a href=#144 id=144 data-nosnippet>144</a> <span class="self">self
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<a href=#145 id=145 data-nosnippet>145</a> </span>}
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<a href=#146 id=146 data-nosnippet>146</a>
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<a href=#147 id=147 data-nosnippet>147</a> <span class="kw">async fn </span>range(<span class="kw-2">&</span><span class="self">self</span>, req: RangeRequest) -> <span class="prelude-ty">Result</span><RangeResponse> {
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<a href=#148 id=148 data-nosnippet>148</a> <span class="self">self</span>.kv_backend.range(req).<span class="kw">await
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<a href=#149 id=149 data-nosnippet>149</a> </span>}
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<a href=#150 id=150 data-nosnippet>150</a>
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<a href=#151 id=151 data-nosnippet>151</a> <span class="kw">async fn </span>put(<span class="kw-2">&</span><span class="self">self</span>, req: PutRequest) -> <span class="prelude-ty">Result</span><PutResponse> {
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<a href=#152 id=152 data-nosnippet>152</a> <span class="kw">let </span>key = <span class="kw-2">&</span>req.key.clone();
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<a href=#153 id=153 data-nosnippet>153</a>
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<a href=#154 id=154 data-nosnippet>154</a> <span class="kw">let </span>ret = <span class="self">self</span>.kv_backend.put(req).<span class="kw">await</span>;
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<a href=#155 id=155 data-nosnippet>155</a>
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<a href=#156 id=156 data-nosnippet>156</a> <span class="kw">if </span>ret.is_ok() {
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<a href=#157 id=157 data-nosnippet>157</a> <span class="self">self</span>.invalidate_key(key).<span class="kw">await</span>;
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<a href=#158 id=158 data-nosnippet>158</a> }
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<a href=#159 id=159 data-nosnippet>159</a>
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<a href=#160 id=160 data-nosnippet>160</a> ret
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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>
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<a href=#163 id=163 data-nosnippet>163</a> <span class="kw">async fn </span>batch_put(<span class="kw-2">&</span><span class="self">self</span>, req: BatchPutRequest) -> <span class="prelude-ty">Result</span><BatchPutResponse> {
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<a href=#164 id=164 data-nosnippet>164</a> <span class="kw">let </span>keys = req
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<a href=#165 id=165 data-nosnippet>165</a> .kvs
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<a href=#166 id=166 data-nosnippet>166</a> .iter()
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<a href=#167 id=167 data-nosnippet>167</a> .map(|kv| kv.key().to_vec())
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<a href=#168 id=168 data-nosnippet>168</a> .collect::<Vec<<span class="kw">_</span>>>();
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<a href=#169 id=169 data-nosnippet>169</a>
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<a href=#170 id=170 data-nosnippet>170</a> <span class="kw">let </span>resp = <span class="self">self</span>.kv_backend.batch_put(req).<span class="kw">await</span>;
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<a href=#171 id=171 data-nosnippet>171</a>
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<a href=#172 id=172 data-nosnippet>172</a> <span class="kw">if </span>resp.is_ok() {
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<a href=#173 id=173 data-nosnippet>173</a> <span class="kw">for </span>key <span class="kw">in </span>keys {
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<a href=#174 id=174 data-nosnippet>174</a> <span class="self">self</span>.invalidate_key(<span class="kw-2">&</span>key).<span class="kw">await</span>;
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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> resp
|
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<a href=#179 id=179 data-nosnippet>179</a> }
|
|
<a href=#180 id=180 data-nosnippet>180</a>
|
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<a href=#181 id=181 data-nosnippet>181</a> <span class="kw">async fn </span>batch_get(<span class="kw-2">&</span><span class="self">self</span>, req: BatchGetRequest) -> <span class="prelude-ty">Result</span><BatchGetResponse> {
|
|
<a href=#182 id=182 data-nosnippet>182</a> <span class="kw">let </span>_timer = METRIC_CATALOG_KV_BATCH_GET.start_timer();
|
|
<a href=#183 id=183 data-nosnippet>183</a>
|
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<a href=#184 id=184 data-nosnippet>184</a> <span class="kw">let </span><span class="kw-2">mut </span>kvs = Vec::with_capacity(req.keys.len());
|
|
<a href=#185 id=185 data-nosnippet>185</a> <span class="kw">let </span><span class="kw-2">mut </span>miss_keys = Vec::with_capacity(req.keys.len());
|
|
<a href=#186 id=186 data-nosnippet>186</a>
|
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<a href=#187 id=187 data-nosnippet>187</a> <span class="kw">for </span>key <span class="kw">in </span>req.keys {
|
|
<a href=#188 id=188 data-nosnippet>188</a> <span class="kw">if let </span><span class="prelude-val">Some</span>(val) = <span class="self">self</span>.cache.get(<span class="kw-2">&</span>key).<span class="kw">await </span>{
|
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<a href=#189 id=189 data-nosnippet>189</a> kvs.push(val);
|
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<a href=#190 id=190 data-nosnippet>190</a> } <span class="kw">else </span>{
|
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<a href=#191 id=191 data-nosnippet>191</a> miss_keys.push(key);
|
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<a href=#192 id=192 data-nosnippet>192</a> }
|
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<a href=#193 id=193 data-nosnippet>193</a> }
|
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<a href=#194 id=194 data-nosnippet>194</a>
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|
<a href=#195 id=195 data-nosnippet>195</a> <span class="kw">let </span>batch_get_req = BatchGetRequest::new().with_keys(miss_keys.clone());
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|
<a href=#196 id=196 data-nosnippet>196</a>
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<a href=#197 id=197 data-nosnippet>197</a> <span class="kw">let </span>pre_version = <span class="self">self</span>.version();
|
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<a href=#198 id=198 data-nosnippet>198</a>
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<a href=#199 id=199 data-nosnippet>199</a> <span class="kw">let </span>unhit_kvs = <span class="self">self</span>.kv_backend.batch_get(batch_get_req).<span class="kw">await</span><span class="question-mark">?</span>.kvs;
|
|
<a href=#200 id=200 data-nosnippet>200</a>
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<a href=#201 id=201 data-nosnippet>201</a> <span class="kw">for </span>kv <span class="kw">in </span>unhit_kvs.iter() {
|
|
<a href=#202 id=202 data-nosnippet>202</a> <span class="self">self</span>.cache.insert(kv.key().to_vec(), kv.clone()).<span class="kw">await</span>;
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<a href=#203 id=203 data-nosnippet>203</a> }
|
|
<a href=#204 id=204 data-nosnippet>204</a>
|
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<a href=#205 id=205 data-nosnippet>205</a> <span class="kw">if </span>!<span class="self">self</span>.validate_version(pre_version) {
|
|
<a href=#206 id=206 data-nosnippet>206</a> <span class="kw">for </span>key <span class="kw">in </span>miss_keys.iter() {
|
|
<a href=#207 id=207 data-nosnippet>207</a> <span class="self">self</span>.cache.invalidate(key).<span class="kw">await</span>;
|
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<a href=#208 id=208 data-nosnippet>208</a> }
|
|
<a href=#209 id=209 data-nosnippet>209</a> }
|
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<a href=#210 id=210 data-nosnippet>210</a>
|
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<a href=#211 id=211 data-nosnippet>211</a> kvs.extend(unhit_kvs);
|
|
<a href=#212 id=212 data-nosnippet>212</a>
|
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<a href=#213 id=213 data-nosnippet>213</a> <span class="prelude-val">Ok</span>(BatchGetResponse { kvs })
|
|
<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">async fn </span>compare_and_put(<span class="kw-2">&</span><span class="self">self</span>, req: CompareAndPutRequest) -> <span class="prelude-ty">Result</span><CompareAndPutResponse> {
|
|
<a href=#217 id=217 data-nosnippet>217</a> <span class="kw">let </span>key = <span class="kw-2">&</span>req.key.clone();
|
|
<a href=#218 id=218 data-nosnippet>218</a>
|
|
<a href=#219 id=219 data-nosnippet>219</a> <span class="kw">let </span>ret = <span class="self">self</span>.kv_backend.compare_and_put(req).<span class="kw">await</span>;
|
|
<a href=#220 id=220 data-nosnippet>220</a>
|
|
<a href=#221 id=221 data-nosnippet>221</a> <span class="kw">if </span>ret.is_ok() {
|
|
<a href=#222 id=222 data-nosnippet>222</a> <span class="self">self</span>.invalidate_key(key).<span class="kw">await</span>;
|
|
<a href=#223 id=223 data-nosnippet>223</a> }
|
|
<a href=#224 id=224 data-nosnippet>224</a>
|
|
<a href=#225 id=225 data-nosnippet>225</a> ret
|
|
<a href=#226 id=226 data-nosnippet>226</a> }
|
|
<a href=#227 id=227 data-nosnippet>227</a>
|
|
<a href=#228 id=228 data-nosnippet>228</a> <span class="kw">async fn </span>delete_range(<span class="kw-2">&</span><span class="self">self</span>, <span class="kw-2">mut </span>req: DeleteRangeRequest) -> <span class="prelude-ty">Result</span><DeleteRangeResponse> {
|
|
<a href=#229 id=229 data-nosnippet>229</a> <span class="kw">let </span>prev_kv = req.prev_kv;
|
|
<a href=#230 id=230 data-nosnippet>230</a>
|
|
<a href=#231 id=231 data-nosnippet>231</a> req.prev_kv = <span class="bool-val">true</span>;
|
|
<a href=#232 id=232 data-nosnippet>232</a> <span class="kw">let </span>resp = <span class="self">self</span>.kv_backend.delete_range(req).<span class="kw">await</span>;
|
|
<a href=#233 id=233 data-nosnippet>233</a> <span class="kw">match </span>resp {
|
|
<a href=#234 id=234 data-nosnippet>234</a> <span class="prelude-val">Ok</span>(<span class="kw-2">mut </span>resp) => {
|
|
<a href=#235 id=235 data-nosnippet>235</a> <span class="kw">for </span>prev_kv <span class="kw">in </span>resp.prev_kvs.iter() {
|
|
<a href=#236 id=236 data-nosnippet>236</a> <span class="self">self</span>.invalidate_key(prev_kv.key()).<span class="kw">await</span>;
|
|
<a href=#237 id=237 data-nosnippet>237</a> }
|
|
<a href=#238 id=238 data-nosnippet>238</a>
|
|
<a href=#239 id=239 data-nosnippet>239</a> <span class="kw">if </span>!prev_kv {
|
|
<a href=#240 id=240 data-nosnippet>240</a> resp.prev_kvs = <span class="macro">vec!</span>[];
|
|
<a href=#241 id=241 data-nosnippet>241</a> }
|
|
<a href=#242 id=242 data-nosnippet>242</a> <span class="prelude-val">Ok</span>(resp)
|
|
<a href=#243 id=243 data-nosnippet>243</a> }
|
|
<a href=#244 id=244 data-nosnippet>244</a> <span class="prelude-val">Err</span>(e) => <span class="prelude-val">Err</span>(e),
|
|
<a href=#245 id=245 data-nosnippet>245</a> }
|
|
<a href=#246 id=246 data-nosnippet>246</a> }
|
|
<a href=#247 id=247 data-nosnippet>247</a>
|
|
<a href=#248 id=248 data-nosnippet>248</a> <span class="kw">async fn </span>batch_delete(<span class="kw-2">&</span><span class="self">self</span>, <span class="kw-2">mut </span>req: BatchDeleteRequest) -> <span class="prelude-ty">Result</span><BatchDeleteResponse> {
|
|
<a href=#249 id=249 data-nosnippet>249</a> <span class="kw">let </span>prev_kv = req.prev_kv;
|
|
<a href=#250 id=250 data-nosnippet>250</a>
|
|
<a href=#251 id=251 data-nosnippet>251</a> req.prev_kv = <span class="bool-val">true</span>;
|
|
<a href=#252 id=252 data-nosnippet>252</a> <span class="kw">let </span>resp = <span class="self">self</span>.kv_backend.batch_delete(req).<span class="kw">await</span>;
|
|
<a href=#253 id=253 data-nosnippet>253</a> <span class="kw">match </span>resp {
|
|
<a href=#254 id=254 data-nosnippet>254</a> <span class="prelude-val">Ok</span>(<span class="kw-2">mut </span>resp) => {
|
|
<a href=#255 id=255 data-nosnippet>255</a> <span class="kw">for </span>prev_kv <span class="kw">in </span>resp.prev_kvs.iter() {
|
|
<a href=#256 id=256 data-nosnippet>256</a> <span class="self">self</span>.invalidate_key(prev_kv.key()).<span class="kw">await</span>;
|
|
<a href=#257 id=257 data-nosnippet>257</a> }
|
|
<a href=#258 id=258 data-nosnippet>258</a>
|
|
<a href=#259 id=259 data-nosnippet>259</a> <span class="kw">if </span>!prev_kv {
|
|
<a href=#260 id=260 data-nosnippet>260</a> resp.prev_kvs = <span class="macro">vec!</span>[];
|
|
<a href=#261 id=261 data-nosnippet>261</a> }
|
|
<a href=#262 id=262 data-nosnippet>262</a> <span class="prelude-val">Ok</span>(resp)
|
|
<a href=#263 id=263 data-nosnippet>263</a> }
|
|
<a href=#264 id=264 data-nosnippet>264</a> <span class="prelude-val">Err</span>(e) => <span class="prelude-val">Err</span>(e),
|
|
<a href=#265 id=265 data-nosnippet>265</a> }
|
|
<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> <span class="kw">async fn </span>get(<span class="kw-2">&</span><span class="self">self</span>, key: <span class="kw-2">&</span>[u8]) -> <span class="prelude-ty">Result</span><<span class="prelude-ty">Option</span><KeyValue>> {
|
|
<a href=#269 id=269 data-nosnippet>269</a> <span class="kw">let </span>_timer = METRIC_CATALOG_KV_GET.start_timer();
|
|
<a href=#270 id=270 data-nosnippet>270</a>
|
|
<a href=#271 id=271 data-nosnippet>271</a> <span class="kw">let </span>pre_version = Arc::new(Mutex::new(<span class="prelude-val">None</span>));
|
|
<a href=#272 id=272 data-nosnippet>272</a>
|
|
<a href=#273 id=273 data-nosnippet>273</a> <span class="kw">let </span>init = <span class="kw">async </span>{
|
|
<a href=#274 id=274 data-nosnippet>274</a> <span class="kw">let </span>version_clone = pre_version.clone();
|
|
<a href=#275 id=275 data-nosnippet>275</a> <span class="kw">let </span>_timer = METRIC_CATALOG_KV_REMOTE_GET.start_timer();
|
|
<a href=#276 id=276 data-nosnippet>276</a>
|
|
<a href=#277 id=277 data-nosnippet>277</a> version_clone.lock().unwrap().replace(<span class="self">self</span>.version());
|
|
<a href=#278 id=278 data-nosnippet>278</a>
|
|
<a href=#279 id=279 data-nosnippet>279</a> <span class="self">self</span>.kv_backend.get(key).<span class="kw">await</span>.map(|val| {
|
|
<a href=#280 id=280 data-nosnippet>280</a> val.with_context(|| CacheNotGetSnafu {
|
|
<a href=#281 id=281 data-nosnippet>281</a> key: String::from_utf8_lossy(key),
|
|
<a href=#282 id=282 data-nosnippet>282</a> })
|
|
<a href=#283 id=283 data-nosnippet>283</a> })<span class="question-mark">?
|
|
<a href=#284 id=284 data-nosnippet>284</a> </span>};
|
|
<a href=#285 id=285 data-nosnippet>285</a>
|
|
<a href=#286 id=286 data-nosnippet>286</a> <span class="comment">// currently moka doesn't have `optionally_try_get_with_by_ref`
|
|
<a href=#287 id=287 data-nosnippet>287</a> // TODO(fys): change to moka method when available
|
|
<a href=#288 id=288 data-nosnippet>288</a> // https://github.com/moka-rs/moka/issues/254
|
|
<a href=#289 id=289 data-nosnippet>289</a> </span><span class="kw">let </span>ret = <span class="kw">match </span><span class="self">self</span>.cache.try_get_with_by_ref(key, init).<span class="kw">await </span>{
|
|
<a href=#290 id=290 data-nosnippet>290</a> <span class="prelude-val">Ok</span>(val) => <span class="prelude-val">Ok</span>(<span class="prelude-val">Some</span>(val)),
|
|
<a href=#291 id=291 data-nosnippet>291</a> <span class="prelude-val">Err</span>(e) => <span class="kw">match </span>e.as_ref() {
|
|
<a href=#292 id=292 data-nosnippet>292</a> CacheNotGet { .. } => <span class="prelude-val">Ok</span>(<span class="prelude-val">None</span>),
|
|
<a href=#293 id=293 data-nosnippet>293</a> <span class="kw">_ </span>=> <span class="prelude-val">Err</span>(e),
|
|
<a href=#294 id=294 data-nosnippet>294</a> },
|
|
<a href=#295 id=295 data-nosnippet>295</a> }
|
|
<a href=#296 id=296 data-nosnippet>296</a> .map_err(|e| {
|
|
<a href=#297 id=297 data-nosnippet>297</a> GetKvCacheSnafu {
|
|
<a href=#298 id=298 data-nosnippet>298</a> err_msg: e.to_string(),
|
|
<a href=#299 id=299 data-nosnippet>299</a> }
|
|
<a href=#300 id=300 data-nosnippet>300</a> .build()
|
|
<a href=#301 id=301 data-nosnippet>301</a> });
|
|
<a href=#302 id=302 data-nosnippet>302</a>
|
|
<a href=#303 id=303 data-nosnippet>303</a> <span class="comment">// "cache.invalidate_key" and "cache.try_get_with_by_ref" are not mutually exclusive. So we need
|
|
<a href=#304 id=304 data-nosnippet>304</a> // to use the version mechanism to prevent expired data from being put into the cache.
|
|
<a href=#305 id=305 data-nosnippet>305</a> </span><span class="kw">if </span>pre_version
|
|
<a href=#306 id=306 data-nosnippet>306</a> .lock()
|
|
<a href=#307 id=307 data-nosnippet>307</a> .unwrap()
|
|
<a href=#308 id=308 data-nosnippet>308</a> .as_ref()
|
|
<a href=#309 id=309 data-nosnippet>309</a> .is_some_and(|v| !<span class="self">self</span>.validate_version(<span class="kw-2">*</span>v))
|
|
<a href=#310 id=310 data-nosnippet>310</a> {
|
|
<a href=#311 id=311 data-nosnippet>311</a> <span class="self">self</span>.cache.invalidate(key).<span class="kw">await</span>;
|
|
<a href=#312 id=312 data-nosnippet>312</a> }
|
|
<a href=#313 id=313 data-nosnippet>313</a>
|
|
<a href=#314 id=314 data-nosnippet>314</a> ret
|
|
<a href=#315 id=315 data-nosnippet>315</a> }
|
|
<a href=#316 id=316 data-nosnippet>316</a>}
|
|
<a href=#317 id=317 data-nosnippet>317</a>
|
|
<a href=#318 id=318 data-nosnippet>318</a><span class="attr">#[async_trait::async_trait]
|
|
<a href=#319 id=319 data-nosnippet>319</a></span><span class="kw">impl </span>KvCacheInvalidator <span class="kw">for </span>CachedKvBackend {
|
|
<a href=#320 id=320 data-nosnippet>320</a> <span class="kw">async fn </span>invalidate_key(<span class="kw-2">&</span><span class="self">self</span>, key: <span class="kw-2">&</span>[u8]) {
|
|
<a href=#321 id=321 data-nosnippet>321</a> <span class="self">self</span>.create_new_version();
|
|
<a href=#322 id=322 data-nosnippet>322</a> <span class="self">self</span>.cache.invalidate(key).<span class="kw">await</span>;
|
|
<a href=#323 id=323 data-nosnippet>323</a> <span class="macro">debug!</span>(<span class="string">"invalidated cache key: {}"</span>, String::from_utf8_lossy(key));
|
|
<a href=#324 id=324 data-nosnippet>324</a> }
|
|
<a href=#325 id=325 data-nosnippet>325</a>}
|
|
<a href=#326 id=326 data-nosnippet>326</a>
|
|
<a href=#327 id=327 data-nosnippet>327</a><span class="kw">impl </span>CachedKvBackend {
|
|
<a href=#328 id=328 data-nosnippet>328</a> <span class="comment">// only for test
|
|
<a href=#329 id=329 data-nosnippet>329</a> </span><span class="attr">#[cfg(test)]
|
|
<a href=#330 id=330 data-nosnippet>330</a> </span><span class="kw">fn </span>wrap(kv_backend: KvBackendRef) -> <span class="self">Self </span>{
|
|
<a href=#331 id=331 data-nosnippet>331</a> <span class="kw">let </span>cache = CacheBuilder::new(DEFAULT_CACHE_MAX_CAPACITY)
|
|
<a href=#332 id=332 data-nosnippet>332</a> .time_to_live(DEFAULT_CACHE_TTL)
|
|
<a href=#333 id=333 data-nosnippet>333</a> .time_to_idle(DEFAULT_CACHE_TTI)
|
|
<a href=#334 id=334 data-nosnippet>334</a> .build();
|
|
<a href=#335 id=335 data-nosnippet>335</a>
|
|
<a href=#336 id=336 data-nosnippet>336</a> <span class="kw">let </span>name = <span class="macro">format!</span>(<span class="string">"CachedKvBackend({})"</span>, kv_backend.name());
|
|
<a href=#337 id=337 data-nosnippet>337</a> <span class="self">Self </span>{
|
|
<a href=#338 id=338 data-nosnippet>338</a> kv_backend,
|
|
<a href=#339 id=339 data-nosnippet>339</a> cache,
|
|
<a href=#340 id=340 data-nosnippet>340</a> name,
|
|
<a href=#341 id=341 data-nosnippet>341</a> version: AtomicUsize::new(<span class="number">0</span>),
|
|
<a href=#342 id=342 data-nosnippet>342</a> }
|
|
<a href=#343 id=343 data-nosnippet>343</a> }
|
|
<a href=#344 id=344 data-nosnippet>344</a>
|
|
<a href=#345 id=345 data-nosnippet>345</a> <span class="kw">pub fn </span>cache(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw-2">&</span>CacheBackend {
|
|
<a href=#346 id=346 data-nosnippet>346</a> <span class="kw-2">&</span><span class="self">self</span>.cache
|
|
<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">fn </span>version(<span class="kw-2">&</span><span class="self">self</span>) -> usize {
|
|
<a href=#350 id=350 data-nosnippet>350</a> <span class="self">self</span>.version.load(Ordering::Relaxed)
|
|
<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> <span class="kw">fn </span>validate_version(<span class="kw-2">&</span><span class="self">self</span>, pre_version: usize) -> bool {
|
|
<a href=#354 id=354 data-nosnippet>354</a> <span class="self">self</span>.version() == pre_version
|
|
<a href=#355 id=355 data-nosnippet>355</a> }
|
|
<a href=#356 id=356 data-nosnippet>356</a>
|
|
<a href=#357 id=357 data-nosnippet>357</a> <span class="kw">fn </span>create_new_version(<span class="kw-2">&</span><span class="self">self</span>) -> usize {
|
|
<a href=#358 id=358 data-nosnippet>358</a> <span class="self">self</span>.version.fetch_add(<span class="number">1</span>, Ordering::Relaxed) + <span class="number">1
|
|
<a href=#359 id=359 data-nosnippet>359</a> </span>}
|
|
<a href=#360 id=360 data-nosnippet>360</a>}
|
|
<a href=#361 id=361 data-nosnippet>361</a>
|
|
<a href=#362 id=362 data-nosnippet>362</a><span class="attr">#[derive(Debug)]
|
|
<a href=#363 id=363 data-nosnippet>363</a></span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">struct </span>MetaKvBackend {
|
|
<a href=#364 id=364 data-nosnippet>364</a> client: Arc<MetaClient>,
|
|
<a href=#365 id=365 data-nosnippet>365</a>}
|
|
<a href=#366 id=366 data-nosnippet>366</a>
|
|
<a href=#367 id=367 data-nosnippet>367</a><span class="kw">impl </span>MetaKvBackend {
|
|
<a href=#368 id=368 data-nosnippet>368</a> <span class="doccomment">/// Constructs a [MetaKvBackend].
|
|
<a href=#369 id=369 data-nosnippet>369</a> </span><span class="kw">fn </span>new(client: Arc<MetaClient>) -> MetaKvBackend {
|
|
<a href=#370 id=370 data-nosnippet>370</a> MetaKvBackend { client }
|
|
<a href=#371 id=371 data-nosnippet>371</a> }
|
|
<a href=#372 id=372 data-nosnippet>372</a>}
|
|
<a href=#373 id=373 data-nosnippet>373</a>
|
|
<a href=#374 id=374 data-nosnippet>374</a><span class="kw">pub fn </span>new_read_only_meta_kv_backend(client: Arc<MetaClient>) -> KvBackendRef {
|
|
<a href=#375 id=375 data-nosnippet>375</a> Arc::new(ReadOnlyKvBackend::new(Arc::new(MetaKvBackend::new(client))))
|
|
<a href=#376 id=376 data-nosnippet>376</a>}
|
|
<a href=#377 id=377 data-nosnippet>377</a>
|
|
<a href=#378 id=378 data-nosnippet>378</a><span class="attr">#[async_trait::async_trait]
|
|
<a href=#379 id=379 data-nosnippet>379</a></span><span class="kw">impl </span>TxnService <span class="kw">for </span>MetaKvBackend {
|
|
<a href=#380 id=380 data-nosnippet>380</a> <span class="kw">type </span>Error = Error;
|
|
<a href=#381 id=381 data-nosnippet>381</a>
|
|
<a href=#382 id=382 data-nosnippet>382</a> <span class="kw">async fn </span>txn(<span class="kw-2">&</span><span class="self">self</span>, _txn: Txn) -> <span class="prelude-ty">Result</span><TxnResponse> {
|
|
<a href=#383 id=383 data-nosnippet>383</a> UnsupportedSnafu {
|
|
<a href=#384 id=384 data-nosnippet>384</a> operation: <span class="string">"MetaKvBackend txn"</span>,
|
|
<a href=#385 id=385 data-nosnippet>385</a> }
|
|
<a href=#386 id=386 data-nosnippet>386</a> .fail()
|
|
<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> <span class="kw">fn </span>max_txn_ops(<span class="kw-2">&</span><span class="self">self</span>) -> usize {
|
|
<a href=#390 id=390 data-nosnippet>390</a> usize::MAX
|
|
<a href=#391 id=391 data-nosnippet>391</a> }
|
|
<a href=#392 id=392 data-nosnippet>392</a>}
|
|
<a href=#393 id=393 data-nosnippet>393</a>
|
|
<a href=#394 id=394 data-nosnippet>394</a><span class="doccomment">/// Implement `KvBackend` trait for `MetaKvBackend` instead of opendal's `Accessor` since
|
|
<a href=#395 id=395 data-nosnippet>395</a>/// `MetaClient`'s range method can return both keys and values, which can reduce IO overhead
|
|
<a href=#396 id=396 data-nosnippet>396</a>/// comparing to `Accessor`'s list and get method.
|
|
<a href=#397 id=397 data-nosnippet>397</a></span><span class="attr">#[async_trait::async_trait]
|
|
<a href=#398 id=398 data-nosnippet>398</a></span><span class="kw">impl </span>KvBackend <span class="kw">for </span>MetaKvBackend {
|
|
<a href=#399 id=399 data-nosnippet>399</a> <span class="kw">fn </span>name(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw-2">&</span>str {
|
|
<a href=#400 id=400 data-nosnippet>400</a> <span class="string">"MetaKvBackend"
|
|
<a href=#401 id=401 data-nosnippet>401</a> </span>}
|
|
<a href=#402 id=402 data-nosnippet>402</a>
|
|
<a href=#403 id=403 data-nosnippet>403</a> <span class="kw">fn </span>as_any(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw-2">&</span><span class="kw">dyn </span>Any {
|
|
<a href=#404 id=404 data-nosnippet>404</a> <span class="self">self
|
|
<a href=#405 id=405 data-nosnippet>405</a> </span>}
|
|
<a href=#406 id=406 data-nosnippet>406</a>
|
|
<a href=#407 id=407 data-nosnippet>407</a> <span class="kw">async fn </span>range(<span class="kw-2">&</span><span class="self">self</span>, req: RangeRequest) -> <span class="prelude-ty">Result</span><RangeResponse> {
|
|
<a href=#408 id=408 data-nosnippet>408</a> <span class="self">self</span>.client
|
|
<a href=#409 id=409 data-nosnippet>409</a> .range(req)
|
|
<a href=#410 id=410 data-nosnippet>410</a> .<span class="kw">await
|
|
<a href=#411 id=411 data-nosnippet>411</a> </span>.map_err(BoxedError::new)
|
|
<a href=#412 id=412 data-nosnippet>412</a> .context(ExternalSnafu)
|
|
<a href=#413 id=413 data-nosnippet>413</a> }
|
|
<a href=#414 id=414 data-nosnippet>414</a>
|
|
<a href=#415 id=415 data-nosnippet>415</a> <span class="kw">async fn </span>put(<span class="kw-2">&</span><span class="self">self</span>, req: PutRequest) -> <span class="prelude-ty">Result</span><PutResponse> {
|
|
<a href=#416 id=416 data-nosnippet>416</a> <span class="self">self</span>.client
|
|
<a href=#417 id=417 data-nosnippet>417</a> .put(req)
|
|
<a href=#418 id=418 data-nosnippet>418</a> .<span class="kw">await
|
|
<a href=#419 id=419 data-nosnippet>419</a> </span>.map_err(BoxedError::new)
|
|
<a href=#420 id=420 data-nosnippet>420</a> .context(ExternalSnafu)
|
|
<a href=#421 id=421 data-nosnippet>421</a> }
|
|
<a href=#422 id=422 data-nosnippet>422</a>
|
|
<a href=#423 id=423 data-nosnippet>423</a> <span class="kw">async fn </span>batch_put(<span class="kw-2">&</span><span class="self">self</span>, req: BatchPutRequest) -> <span class="prelude-ty">Result</span><BatchPutResponse> {
|
|
<a href=#424 id=424 data-nosnippet>424</a> <span class="self">self</span>.client
|
|
<a href=#425 id=425 data-nosnippet>425</a> .batch_put(req)
|
|
<a href=#426 id=426 data-nosnippet>426</a> .<span class="kw">await
|
|
<a href=#427 id=427 data-nosnippet>427</a> </span>.map_err(BoxedError::new)
|
|
<a href=#428 id=428 data-nosnippet>428</a> .context(ExternalSnafu)
|
|
<a href=#429 id=429 data-nosnippet>429</a> }
|
|
<a href=#430 id=430 data-nosnippet>430</a>
|
|
<a href=#431 id=431 data-nosnippet>431</a> <span class="kw">async fn </span>batch_get(<span class="kw-2">&</span><span class="self">self</span>, req: BatchGetRequest) -> <span class="prelude-ty">Result</span><BatchGetResponse> {
|
|
<a href=#432 id=432 data-nosnippet>432</a> <span class="self">self</span>.client
|
|
<a href=#433 id=433 data-nosnippet>433</a> .batch_get(req)
|
|
<a href=#434 id=434 data-nosnippet>434</a> .<span class="kw">await
|
|
<a href=#435 id=435 data-nosnippet>435</a> </span>.map_err(BoxedError::new)
|
|
<a href=#436 id=436 data-nosnippet>436</a> .context(ExternalSnafu)
|
|
<a href=#437 id=437 data-nosnippet>437</a> }
|
|
<a href=#438 id=438 data-nosnippet>438</a>
|
|
<a href=#439 id=439 data-nosnippet>439</a> <span class="kw">async fn </span>compare_and_put(
|
|
<a href=#440 id=440 data-nosnippet>440</a> <span class="kw-2">&</span><span class="self">self</span>,
|
|
<a href=#441 id=441 data-nosnippet>441</a> request: CompareAndPutRequest,
|
|
<a href=#442 id=442 data-nosnippet>442</a> ) -> <span class="prelude-ty">Result</span><CompareAndPutResponse> {
|
|
<a href=#443 id=443 data-nosnippet>443</a> <span class="self">self</span>.client
|
|
<a href=#444 id=444 data-nosnippet>444</a> .compare_and_put(request)
|
|
<a href=#445 id=445 data-nosnippet>445</a> .<span class="kw">await
|
|
<a href=#446 id=446 data-nosnippet>446</a> </span>.map_err(BoxedError::new)
|
|
<a href=#447 id=447 data-nosnippet>447</a> .context(ExternalSnafu)
|
|
<a href=#448 id=448 data-nosnippet>448</a> }
|
|
<a href=#449 id=449 data-nosnippet>449</a>
|
|
<a href=#450 id=450 data-nosnippet>450</a> <span class="kw">async fn </span>delete_range(<span class="kw-2">&</span><span class="self">self</span>, req: DeleteRangeRequest) -> <span class="prelude-ty">Result</span><DeleteRangeResponse> {
|
|
<a href=#451 id=451 data-nosnippet>451</a> <span class="self">self</span>.client
|
|
<a href=#452 id=452 data-nosnippet>452</a> .delete_range(req)
|
|
<a href=#453 id=453 data-nosnippet>453</a> .<span class="kw">await
|
|
<a href=#454 id=454 data-nosnippet>454</a> </span>.map_err(BoxedError::new)
|
|
<a href=#455 id=455 data-nosnippet>455</a> .context(ExternalSnafu)
|
|
<a href=#456 id=456 data-nosnippet>456</a> }
|
|
<a href=#457 id=457 data-nosnippet>457</a>
|
|
<a href=#458 id=458 data-nosnippet>458</a> <span class="kw">async fn </span>batch_delete(<span class="kw-2">&</span><span class="self">self</span>, req: BatchDeleteRequest) -> <span class="prelude-ty">Result</span><BatchDeleteResponse> {
|
|
<a href=#459 id=459 data-nosnippet>459</a> <span class="self">self</span>.client
|
|
<a href=#460 id=460 data-nosnippet>460</a> .batch_delete(req)
|
|
<a href=#461 id=461 data-nosnippet>461</a> .<span class="kw">await
|
|
<a href=#462 id=462 data-nosnippet>462</a> </span>.map_err(BoxedError::new)
|
|
<a href=#463 id=463 data-nosnippet>463</a> .context(ExternalSnafu)
|
|
<a href=#464 id=464 data-nosnippet>464</a> }
|
|
<a href=#465 id=465 data-nosnippet>465</a>
|
|
<a href=#466 id=466 data-nosnippet>466</a> <span class="kw">async fn </span>get(<span class="kw-2">&</span><span class="self">self</span>, key: <span class="kw-2">&</span>[u8]) -> <span class="prelude-ty">Result</span><<span class="prelude-ty">Option</span><KeyValue>> {
|
|
<a href=#467 id=467 data-nosnippet>467</a> <span class="kw">let </span><span class="kw-2">mut </span>response = <span class="self">self
|
|
<a href=#468 id=468 data-nosnippet>468</a> </span>.client
|
|
<a href=#469 id=469 data-nosnippet>469</a> .range(RangeRequest::new().with_key(key))
|
|
<a href=#470 id=470 data-nosnippet>470</a> .<span class="kw">await
|
|
<a href=#471 id=471 data-nosnippet>471</a> </span>.map_err(BoxedError::new)
|
|
<a href=#472 id=472 data-nosnippet>472</a> .context(ExternalSnafu)<span class="question-mark">?</span>;
|
|
<a href=#473 id=473 data-nosnippet>473</a> <span class="prelude-val">Ok</span>(response.take_kvs().get_mut(<span class="number">0</span>).map(|kv| KeyValue {
|
|
<a href=#474 id=474 data-nosnippet>474</a> key: kv.take_key(),
|
|
<a href=#475 id=475 data-nosnippet>475</a> value: kv.take_value(),
|
|
<a href=#476 id=476 data-nosnippet>476</a> }))
|
|
<a href=#477 id=477 data-nosnippet>477</a> }
|
|
<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="attr">#[cfg(test)]
|
|
<a href=#481 id=481 data-nosnippet>481</a></span><span class="kw">mod </span>tests {
|
|
<a href=#482 id=482 data-nosnippet>482</a> <span class="kw">use </span>std::any::Any;
|
|
<a href=#483 id=483 data-nosnippet>483</a> <span class="kw">use </span>std::sync::Arc;
|
|
<a href=#484 id=484 data-nosnippet>484</a> <span class="kw">use </span>std::sync::atomic::{AtomicU32, Ordering};
|
|
<a href=#485 id=485 data-nosnippet>485</a>
|
|
<a href=#486 id=486 data-nosnippet>486</a> <span class="kw">use </span>async_trait::async_trait;
|
|
<a href=#487 id=487 data-nosnippet>487</a> <span class="kw">use </span>common_meta::kv_backend::memory::MemoryKvBackend;
|
|
<a href=#488 id=488 data-nosnippet>488</a> <span class="kw">use </span>common_meta::kv_backend::read_only::ReadOnlyKvBackend;
|
|
<a href=#489 id=489 data-nosnippet>489</a> <span class="kw">use </span>common_meta::kv_backend::txn::{Txn, TxnOp};
|
|
<a href=#490 id=490 data-nosnippet>490</a> <span class="kw">use </span>common_meta::kv_backend::{KvBackend, TxnService};
|
|
<a href=#491 id=491 data-nosnippet>491</a> <span class="kw">use </span>common_meta::rpc::KeyValue;
|
|
<a href=#492 id=492 data-nosnippet>492</a> <span class="kw">use </span>common_meta::rpc::store::{
|
|
<a href=#493 id=493 data-nosnippet>493</a> BatchDeleteRequest, BatchDeleteResponse, BatchGetRequest, BatchGetResponse,
|
|
<a href=#494 id=494 data-nosnippet>494</a> BatchPutRequest, BatchPutResponse, DeleteRangeRequest, DeleteRangeResponse, PutRequest,
|
|
<a href=#495 id=495 data-nosnippet>495</a> PutResponse, RangeRequest, RangeResponse,
|
|
<a href=#496 id=496 data-nosnippet>496</a> };
|
|
<a href=#497 id=497 data-nosnippet>497</a> <span class="kw">use </span>dashmap::DashMap;
|
|
<a href=#498 id=498 data-nosnippet>498</a> <span class="kw">use </span>meta_client::client::MetaClientBuilder;
|
|
<a href=#499 id=499 data-nosnippet>499</a>
|
|
<a href=#500 id=500 data-nosnippet>500</a> <span class="kw">use </span>super::{CachedKvBackend, new_read_only_meta_kv_backend};
|
|
<a href=#501 id=501 data-nosnippet>501</a>
|
|
<a href=#502 id=502 data-nosnippet>502</a> <span class="attr">#[derive(Default)]
|
|
<a href=#503 id=503 data-nosnippet>503</a> </span><span class="kw">pub struct </span>SimpleKvBackend {
|
|
<a href=#504 id=504 data-nosnippet>504</a> inner_map: DashMap<Vec<u8>, Vec<u8>>,
|
|
<a href=#505 id=505 data-nosnippet>505</a> get_execute_times: Arc<AtomicU32>,
|
|
<a href=#506 id=506 data-nosnippet>506</a> }
|
|
<a href=#507 id=507 data-nosnippet>507</a>
|
|
<a href=#508 id=508 data-nosnippet>508</a> <span class="kw">impl </span>TxnService <span class="kw">for </span>SimpleKvBackend {
|
|
<a href=#509 id=509 data-nosnippet>509</a> <span class="kw">type </span>Error = common_meta::error::Error;
|
|
<a href=#510 id=510 data-nosnippet>510</a> }
|
|
<a href=#511 id=511 data-nosnippet>511</a>
|
|
<a href=#512 id=512 data-nosnippet>512</a> <span class="attr">#[async_trait]
|
|
<a href=#513 id=513 data-nosnippet>513</a> </span><span class="kw">impl </span>KvBackend <span class="kw">for </span>SimpleKvBackend {
|
|
<a href=#514 id=514 data-nosnippet>514</a> <span class="kw">fn </span>name(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw-2">&</span>str {
|
|
<a href=#515 id=515 data-nosnippet>515</a> <span class="string">"SimpleKvBackend"
|
|
<a href=#516 id=516 data-nosnippet>516</a> </span>}
|
|
<a href=#517 id=517 data-nosnippet>517</a>
|
|
<a href=#518 id=518 data-nosnippet>518</a> <span class="kw">fn </span>as_any(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw-2">&</span><span class="kw">dyn </span>Any {
|
|
<a href=#519 id=519 data-nosnippet>519</a> <span class="self">self
|
|
<a href=#520 id=520 data-nosnippet>520</a> </span>}
|
|
<a href=#521 id=521 data-nosnippet>521</a>
|
|
<a href=#522 id=522 data-nosnippet>522</a> <span class="kw">async fn </span>batch_get(<span class="kw-2">&</span><span class="self">self</span>, req: BatchGetRequest) -> <span class="prelude-ty">Result</span><BatchGetResponse, <span class="self">Self</span>::Error> {
|
|
<a href=#523 id=523 data-nosnippet>523</a> <span class="kw">let </span><span class="kw-2">mut </span>kvs = Vec::with_capacity(req.keys.len());
|
|
<a href=#524 id=524 data-nosnippet>524</a> <span class="kw">for </span>key <span class="kw">in </span>req.keys.iter() {
|
|
<a href=#525 id=525 data-nosnippet>525</a> <span class="kw">if let </span><span class="prelude-val">Some</span>(kv) = <span class="self">self</span>.get(key).<span class="kw">await</span><span class="question-mark">? </span>{
|
|
<a href=#526 id=526 data-nosnippet>526</a> kvs.push(kv);
|
|
<a href=#527 id=527 data-nosnippet>527</a> }
|
|
<a href=#528 id=528 data-nosnippet>528</a> }
|
|
<a href=#529 id=529 data-nosnippet>529</a> <span class="prelude-val">Ok</span>(BatchGetResponse { kvs })
|
|
<a href=#530 id=530 data-nosnippet>530</a> }
|
|
<a href=#531 id=531 data-nosnippet>531</a>
|
|
<a href=#532 id=532 data-nosnippet>532</a> <span class="kw">async fn </span>put(<span class="kw-2">&</span><span class="self">self</span>, req: PutRequest) -> <span class="prelude-ty">Result</span><PutResponse, <span class="self">Self</span>::Error> {
|
|
<a href=#533 id=533 data-nosnippet>533</a> <span class="self">self</span>.inner_map.insert(req.key, req.value);
|
|
<a href=#534 id=534 data-nosnippet>534</a> <span class="comment">// always return None as prev_kv, since we don't use it in this test.
|
|
<a href=#535 id=535 data-nosnippet>535</a> </span><span class="prelude-val">Ok</span>(PutResponse { prev_kv: <span class="prelude-val">None </span>})
|
|
<a href=#536 id=536 data-nosnippet>536</a> }
|
|
<a href=#537 id=537 data-nosnippet>537</a>
|
|
<a href=#538 id=538 data-nosnippet>538</a> <span class="kw">async fn </span>get(<span class="kw-2">&</span><span class="self">self</span>, key: <span class="kw-2">&</span>[u8]) -> <span class="prelude-ty">Result</span><<span class="prelude-ty">Option</span><KeyValue>, <span class="self">Self</span>::Error> {
|
|
<a href=#539 id=539 data-nosnippet>539</a> <span class="self">self</span>.get_execute_times
|
|
<a href=#540 id=540 data-nosnippet>540</a> .fetch_add(<span class="number">1</span>, std::sync::atomic::Ordering::SeqCst);
|
|
<a href=#541 id=541 data-nosnippet>541</a> <span class="prelude-val">Ok</span>(<span class="self">self</span>.inner_map.get(key).map(|v| KeyValue {
|
|
<a href=#542 id=542 data-nosnippet>542</a> key: key.to_vec(),
|
|
<a href=#543 id=543 data-nosnippet>543</a> value: v.value().clone(),
|
|
<a href=#544 id=544 data-nosnippet>544</a> }))
|
|
<a href=#545 id=545 data-nosnippet>545</a> }
|
|
<a href=#546 id=546 data-nosnippet>546</a>
|
|
<a href=#547 id=547 data-nosnippet>547</a> <span class="kw">async fn </span>range(<span class="kw-2">&</span><span class="self">self</span>, _req: RangeRequest) -> <span class="prelude-ty">Result</span><RangeResponse, <span class="self">Self</span>::Error> {
|
|
<a href=#548 id=548 data-nosnippet>548</a> <span class="macro">unimplemented!</span>()
|
|
<a href=#549 id=549 data-nosnippet>549</a> }
|
|
<a href=#550 id=550 data-nosnippet>550</a>
|
|
<a href=#551 id=551 data-nosnippet>551</a> <span class="kw">async fn </span>batch_put(<span class="kw-2">&</span><span class="self">self</span>, _req: BatchPutRequest) -> <span class="prelude-ty">Result</span><BatchPutResponse, <span class="self">Self</span>::Error> {
|
|
<a href=#552 id=552 data-nosnippet>552</a> <span class="macro">unimplemented!</span>()
|
|
<a href=#553 id=553 data-nosnippet>553</a> }
|
|
<a href=#554 id=554 data-nosnippet>554</a>
|
|
<a href=#555 id=555 data-nosnippet>555</a> <span class="kw">async fn </span>delete_range(
|
|
<a href=#556 id=556 data-nosnippet>556</a> <span class="kw-2">&</span><span class="self">self</span>,
|
|
<a href=#557 id=557 data-nosnippet>557</a> _req: DeleteRangeRequest,
|
|
<a href=#558 id=558 data-nosnippet>558</a> ) -> <span class="prelude-ty">Result</span><DeleteRangeResponse, <span class="self">Self</span>::Error> {
|
|
<a href=#559 id=559 data-nosnippet>559</a> <span class="macro">unimplemented!</span>()
|
|
<a href=#560 id=560 data-nosnippet>560</a> }
|
|
<a href=#561 id=561 data-nosnippet>561</a>
|
|
<a href=#562 id=562 data-nosnippet>562</a> <span class="kw">async fn </span>batch_delete(
|
|
<a href=#563 id=563 data-nosnippet>563</a> <span class="kw-2">&</span><span class="self">self</span>,
|
|
<a href=#564 id=564 data-nosnippet>564</a> _req: BatchDeleteRequest,
|
|
<a href=#565 id=565 data-nosnippet>565</a> ) -> <span class="prelude-ty">Result</span><BatchDeleteResponse, <span class="self">Self</span>::Error> {
|
|
<a href=#566 id=566 data-nosnippet>566</a> <span class="macro">unimplemented!</span>()
|
|
<a href=#567 id=567 data-nosnippet>567</a> }
|
|
<a href=#568 id=568 data-nosnippet>568</a> }
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<a href=#569 id=569 data-nosnippet>569</a>
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<a href=#570 id=570 data-nosnippet>570</a> <span class="attr">#[tokio::test]
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<a href=#571 id=571 data-nosnippet>571</a> </span><span class="kw">async fn </span>test_cached_kv_backend() {
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<a href=#572 id=572 data-nosnippet>572</a> <span class="kw">let </span>simple_kv = Arc::new(SimpleKvBackend::default());
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<a href=#573 id=573 data-nosnippet>573</a> <span class="kw">let </span>get_execute_times = simple_kv.get_execute_times.clone();
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<a href=#574 id=574 data-nosnippet>574</a> <span class="kw">let </span>cached_kv = CachedKvBackend::wrap(simple_kv);
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<a href=#575 id=575 data-nosnippet>575</a>
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<a href=#576 id=576 data-nosnippet>576</a> add_some_vals(<span class="kw-2">&</span>cached_kv).<span class="kw">await</span>;
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<a href=#577 id=577 data-nosnippet>577</a>
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<a href=#578 id=578 data-nosnippet>578</a> <span class="kw">let </span>batch_get_req = BatchGetRequest {
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<a href=#579 id=579 data-nosnippet>579</a> keys: <span class="macro">vec!</span>[<span class="string">b"k1"</span>.to_vec(), <span class="string">b"k2"</span>.to_vec()],
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<a href=#580 id=580 data-nosnippet>580</a> };
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<a href=#581 id=581 data-nosnippet>581</a>
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<a href=#582 id=582 data-nosnippet>582</a> <span class="macro">assert_eq!</span>(get_execute_times.load(Ordering::SeqCst), <span class="number">0</span>);
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<a href=#583 id=583 data-nosnippet>583</a>
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<a href=#584 id=584 data-nosnippet>584</a> <span class="kw">for _ in </span><span class="number">0</span>..<span class="number">10 </span>{
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<a href=#585 id=585 data-nosnippet>585</a> <span class="kw">let </span>_batch_get_resp = cached_kv.batch_get(batch_get_req.clone()).<span class="kw">await</span>.unwrap();
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<a href=#586 id=586 data-nosnippet>586</a>
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<a href=#587 id=587 data-nosnippet>587</a> <span class="macro">assert_eq!</span>(get_execute_times.load(Ordering::SeqCst), <span class="number">2</span>);
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<a href=#588 id=588 data-nosnippet>588</a> }
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<a href=#589 id=589 data-nosnippet>589</a>
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<a href=#590 id=590 data-nosnippet>590</a> <span class="kw">let </span>batch_get_req = BatchGetRequest {
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<a href=#591 id=591 data-nosnippet>591</a> keys: <span class="macro">vec!</span>[<span class="string">b"k1"</span>.to_vec(), <span class="string">b"k2"</span>.to_vec(), <span class="string">b"k3"</span>.to_vec()],
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<a href=#592 id=592 data-nosnippet>592</a> };
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<a href=#593 id=593 data-nosnippet>593</a>
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<a href=#594 id=594 data-nosnippet>594</a> <span class="kw">let </span>_batch_get_resp = cached_kv.batch_get(batch_get_req.clone()).<span class="kw">await</span>.unwrap();
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<a href=#595 id=595 data-nosnippet>595</a>
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<a href=#596 id=596 data-nosnippet>596</a> <span class="macro">assert_eq!</span>(get_execute_times.load(Ordering::SeqCst), <span class="number">3</span>);
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<a href=#597 id=597 data-nosnippet>597</a>
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<a href=#598 id=598 data-nosnippet>598</a> <span class="kw">for _ in </span><span class="number">0</span>..<span class="number">10 </span>{
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<a href=#599 id=599 data-nosnippet>599</a> <span class="kw">let </span>_batch_get_resp = cached_kv.batch_get(batch_get_req.clone()).<span class="kw">await</span>.unwrap();
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<a href=#600 id=600 data-nosnippet>600</a>
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<a href=#601 id=601 data-nosnippet>601</a> <span class="macro">assert_eq!</span>(get_execute_times.load(Ordering::SeqCst), <span class="number">3</span>);
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<a href=#602 id=602 data-nosnippet>602</a> }
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<a href=#603 id=603 data-nosnippet>603</a> }
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<a href=#604 id=604 data-nosnippet>604</a>
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<a href=#605 id=605 data-nosnippet>605</a> <span class="attr">#[tokio::test]
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<a href=#606 id=606 data-nosnippet>606</a> </span><span class="kw">async fn </span>test_cached_kv_backend_rejects_writes_with_read_only_inner() {
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<a href=#607 id=607 data-nosnippet>607</a> <span class="kw">let </span>inner = Arc::new(MemoryKvBackend::<common_meta::error::Error>::new());
|
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<a href=#608 id=608 data-nosnippet>608</a> <span class="kw">let </span>cached_kv = CachedKvBackend::wrap(Arc::new(ReadOnlyKvBackend::new(inner)));
|
|
<a href=#609 id=609 data-nosnippet>609</a>
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<a href=#610 id=610 data-nosnippet>610</a> <span class="kw">let </span>err = cached_kv
|
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<a href=#611 id=611 data-nosnippet>611</a> .put(PutRequest {
|
|
<a href=#612 id=612 data-nosnippet>612</a> key: <span class="string">b"k1"</span>.to_vec(),
|
|
<a href=#613 id=613 data-nosnippet>613</a> value: <span class="string">b"v1"</span>.to_vec(),
|
|
<a href=#614 id=614 data-nosnippet>614</a> prev_kv: <span class="bool-val">false</span>,
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<a href=#615 id=615 data-nosnippet>615</a> })
|
|
<a href=#616 id=616 data-nosnippet>616</a> .<span class="kw">await
|
|
<a href=#617 id=617 data-nosnippet>617</a> </span>.unwrap_err();
|
|
<a href=#618 id=618 data-nosnippet>618</a>
|
|
<a href=#619 id=619 data-nosnippet>619</a> <span class="macro">assert!</span>(<span class="macro">matches!</span>(
|
|
<a href=#620 id=620 data-nosnippet>620</a> err,
|
|
<a href=#621 id=621 data-nosnippet>621</a> common_meta::error::Error::ReadOnlyKvBackend { .. }
|
|
<a href=#622 id=622 data-nosnippet>622</a> ));
|
|
<a href=#623 id=623 data-nosnippet>623</a> }
|
|
<a href=#624 id=624 data-nosnippet>624</a>
|
|
<a href=#625 id=625 data-nosnippet>625</a> <span class="attr">#[tokio::test]
|
|
<a href=#626 id=626 data-nosnippet>626</a> </span><span class="kw">async fn </span>test_read_only_meta_kv_backend_rejects_writes() {
|
|
<a href=#627 id=627 data-nosnippet>627</a> <span class="kw">let </span>meta_client = Arc::new(MetaClientBuilder::frontend_default_options().build());
|
|
<a href=#628 id=628 data-nosnippet>628</a> <span class="kw">let </span>backend = new_read_only_meta_kv_backend(meta_client);
|
|
<a href=#629 id=629 data-nosnippet>629</a>
|
|
<a href=#630 id=630 data-nosnippet>630</a> <span class="kw">let </span>err = backend
|
|
<a href=#631 id=631 data-nosnippet>631</a> .put(PutRequest {
|
|
<a href=#632 id=632 data-nosnippet>632</a> key: <span class="string">b"k1"</span>.to_vec(),
|
|
<a href=#633 id=633 data-nosnippet>633</a> value: <span class="string">b"v1"</span>.to_vec(),
|
|
<a href=#634 id=634 data-nosnippet>634</a> prev_kv: <span class="bool-val">false</span>,
|
|
<a href=#635 id=635 data-nosnippet>635</a> })
|
|
<a href=#636 id=636 data-nosnippet>636</a> .<span class="kw">await
|
|
<a href=#637 id=637 data-nosnippet>637</a> </span>.unwrap_err();
|
|
<a href=#638 id=638 data-nosnippet>638</a>
|
|
<a href=#639 id=639 data-nosnippet>639</a> <span class="macro">assert!</span>(<span class="macro">matches!</span>(
|
|
<a href=#640 id=640 data-nosnippet>640</a> err,
|
|
<a href=#641 id=641 data-nosnippet>641</a> common_meta::error::Error::ReadOnlyKvBackend { .. }
|
|
<a href=#642 id=642 data-nosnippet>642</a> ));
|
|
<a href=#643 id=643 data-nosnippet>643</a> }
|
|
<a href=#644 id=644 data-nosnippet>644</a>
|
|
<a href=#645 id=645 data-nosnippet>645</a> <span class="attr">#[tokio::test]
|
|
<a href=#646 id=646 data-nosnippet>646</a> </span><span class="kw">async fn </span>test_read_only_meta_kv_backend_does_not_emulate_txn() {
|
|
<a href=#647 id=647 data-nosnippet>647</a> <span class="kw">let </span>meta_client = Arc::new(MetaClientBuilder::frontend_default_options().build());
|
|
<a href=#648 id=648 data-nosnippet>648</a> <span class="kw">let </span>backend = new_read_only_meta_kv_backend(meta_client);
|
|
<a href=#649 id=649 data-nosnippet>649</a>
|
|
<a href=#650 id=650 data-nosnippet>650</a> <span class="kw">let </span>result = backend
|
|
<a href=#651 id=651 data-nosnippet>651</a> .txn(Txn::new().and_then(<span class="macro">vec!</span>[TxnOp::Get(<span class="string">b"k1"</span>.to_vec())]))
|
|
<a href=#652 id=652 data-nosnippet>652</a> .<span class="kw">await</span>;
|
|
<a href=#653 id=653 data-nosnippet>653</a> <span class="kw">let </span>err = <span class="kw">match </span>result {
|
|
<a href=#654 id=654 data-nosnippet>654</a> <span class="prelude-val">Ok</span>(<span class="kw">_</span>) => <span class="macro">panic!</span>(<span class="string">"expected unsupported txn error"</span>),
|
|
<a href=#655 id=655 data-nosnippet>655</a> <span class="prelude-val">Err</span>(err) => err,
|
|
<a href=#656 id=656 data-nosnippet>656</a> };
|
|
<a href=#657 id=657 data-nosnippet>657</a>
|
|
<a href=#658 id=658 data-nosnippet>658</a> <span class="macro">assert!</span>(<span class="macro">matches!</span>(err, common_meta::error::Error::Unsupported { .. }));
|
|
<a href=#659 id=659 data-nosnippet>659</a> }
|
|
<a href=#660 id=660 data-nosnippet>660</a>
|
|
<a href=#661 id=661 data-nosnippet>661</a> <span class="kw">async fn </span>add_some_vals(kv_backend: <span class="kw-2">&</span><span class="kw">impl </span>KvBackend) {
|
|
<a href=#662 id=662 data-nosnippet>662</a> kv_backend
|
|
<a href=#663 id=663 data-nosnippet>663</a> .put(PutRequest {
|
|
<a href=#664 id=664 data-nosnippet>664</a> key: <span class="string">b"k1"</span>.to_vec(),
|
|
<a href=#665 id=665 data-nosnippet>665</a> value: <span class="string">b"v1"</span>.to_vec(),
|
|
<a href=#666 id=666 data-nosnippet>666</a> prev_kv: <span class="bool-val">false</span>,
|
|
<a href=#667 id=667 data-nosnippet>667</a> })
|
|
<a href=#668 id=668 data-nosnippet>668</a> .<span class="kw">await
|
|
<a href=#669 id=669 data-nosnippet>669</a> </span>.unwrap();
|
|
<a href=#670 id=670 data-nosnippet>670</a>
|
|
<a href=#671 id=671 data-nosnippet>671</a> kv_backend
|
|
<a href=#672 id=672 data-nosnippet>672</a> .put(PutRequest {
|
|
<a href=#673 id=673 data-nosnippet>673</a> key: <span class="string">b"k2"</span>.to_vec(),
|
|
<a href=#674 id=674 data-nosnippet>674</a> value: <span class="string">b"v2"</span>.to_vec(),
|
|
<a href=#675 id=675 data-nosnippet>675</a> prev_kv: <span class="bool-val">false</span>,
|
|
<a href=#676 id=676 data-nosnippet>676</a> })
|
|
<a href=#677 id=677 data-nosnippet>677</a> .<span class="kw">await
|
|
<a href=#678 id=678 data-nosnippet>678</a> </span>.unwrap();
|
|
<a href=#679 id=679 data-nosnippet>679</a>
|
|
<a href=#680 id=680 data-nosnippet>680</a> kv_backend
|
|
<a href=#681 id=681 data-nosnippet>681</a> .put(PutRequest {
|
|
<a href=#682 id=682 data-nosnippet>682</a> key: <span class="string">b"k3"</span>.to_vec(),
|
|
<a href=#683 id=683 data-nosnippet>683</a> value: <span class="string">b"v3"</span>.to_vec(),
|
|
<a href=#684 id=684 data-nosnippet>684</a> prev_kv: <span class="bool-val">false</span>,
|
|
<a href=#685 id=685 data-nosnippet>685</a> })
|
|
<a href=#686 id=686 data-nosnippet>686</a> .<span class="kw">await
|
|
<a href=#687 id=687 data-nosnippet>687</a> </span>.unwrap();
|
|
<a href=#688 id=688 data-nosnippet>688</a> }
|
|
<a href=#689 id=689 data-nosnippet>689</a>}
|
|
</code></pre></div></section></main></body></html> |