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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/operator/src/flow.rs`."><title>flow.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-1ed95124.css"><meta name="rustdoc-vars" data-root-path="../../" data-static-root-path="../../static.files/" data-current-crate="operator" data-themes="" data-resource-suffix="" data-rustdoc-version="1.98.1 (48a229cea 2026-09-01)" data-channel="1.98.1" data-search-js="search-9944d736.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-417ebf0a.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">operator/</div>flow.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>api::v1::flow::FlowRequestHeader;
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<a href=#16 id=16 data-nosnippet>16</a><span class="kw">use </span>async_trait::async_trait;
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<a href=#17 id=17 data-nosnippet>17</a><span class="kw">use </span>common_error::ext::BoxedError;
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<a href=#18 id=18 data-nosnippet>18</a><span class="kw">use </span>common_function::handlers::FlowServiceHandler;
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<a href=#19 id=19 data-nosnippet>19</a><span class="kw">use </span>common_meta::key::flow::FlowMetadataManagerRef;
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<a href=#20 id=20 data-nosnippet>20</a><span class="kw">use </span>common_meta::node_manager::NodeManagerRef;
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<a href=#21 id=21 data-nosnippet>21</a><span class="kw">use </span>common_query::error::Result;
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<a href=#22 id=22 data-nosnippet>22</a><span class="kw">use </span>common_telemetry::tracing_context::TracingContext;
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<a href=#23 id=23 data-nosnippet>23</a><span class="kw">use </span>futures::StreamExt;
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<a href=#24 id=24 data-nosnippet>24</a><span class="kw">use </span>futures::stream::FuturesUnordered;
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<a href=#25 id=25 data-nosnippet>25</a><span class="kw">use </span>session::context::QueryContextRef;
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<a href=#26 id=26 data-nosnippet>26</a><span class="kw">use </span>snafu::{OptionExt, ResultExt};
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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>::utils::to_meta_query_context;
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<a href=#29 id=29 data-nosnippet>29</a>
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<a href=#30 id=30 data-nosnippet>30</a><span class="doccomment">/// The operator for flow service which implements [`FlowServiceHandler`].
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<a href=#31 id=31 data-nosnippet>31</a></span><span class="kw">pub struct </span>FlowServiceOperator {
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<a href=#32 id=32 data-nosnippet>32</a> flow_metadata_manager: FlowMetadataManagerRef,
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<a href=#33 id=33 data-nosnippet>33</a> node_manager: NodeManagerRef,
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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="kw">impl </span>FlowServiceOperator {
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<a href=#37 id=37 data-nosnippet>37</a> <span class="kw">pub fn </span>new(
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<a href=#38 id=38 data-nosnippet>38</a> flow_metadata_manager: FlowMetadataManagerRef,
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<a href=#39 id=39 data-nosnippet>39</a> node_manager: NodeManagerRef,
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<a href=#40 id=40 data-nosnippet>40</a> ) -> <span class="self">Self </span>{
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<a href=#41 id=41 data-nosnippet>41</a> <span class="self">Self </span>{
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<a href=#42 id=42 data-nosnippet>42</a> flow_metadata_manager,
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<a href=#43 id=43 data-nosnippet>43</a> node_manager,
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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> }
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<a href=#46 id=46 data-nosnippet>46</a>
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<a href=#47 id=47 data-nosnippet>47</a> <span class="kw">pub fn </span>flow_metadata_manager(<span class="kw-2">&</span><span class="self">self</span>) -> FlowMetadataManagerRef {
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<a href=#48 id=48 data-nosnippet>48</a> <span class="self">self</span>.flow_metadata_manager.clone()
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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="attr">#[async_trait]
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<a href=#53 id=53 data-nosnippet>53</a></span><span class="kw">impl </span>FlowServiceHandler <span class="kw">for </span>FlowServiceOperator {
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<a href=#54 id=54 data-nosnippet>54</a> <span class="kw">async fn </span>flush(
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<a href=#55 id=55 data-nosnippet>55</a> <span class="kw-2">&</span><span class="self">self</span>,
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<a href=#56 id=56 data-nosnippet>56</a> catalog: <span class="kw-2">&</span>str,
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<a href=#57 id=57 data-nosnippet>57</a> flow: <span class="kw-2">&</span>str,
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<a href=#58 id=58 data-nosnippet>58</a> ctx: QueryContextRef,
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<a href=#59 id=59 data-nosnippet>59</a> ) -> <span class="prelude-ty">Result</span><api::v1::flow::FlowResponse> {
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<a href=#60 id=60 data-nosnippet>60</a> <span class="self">self</span>.flush_inner(catalog, flow, ctx).<span class="kw">await
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<a href=#61 id=61 data-nosnippet>61</a> </span>}
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<a href=#62 id=62 data-nosnippet>62</a>}
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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><span class="kw">impl </span>FlowServiceOperator {
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<a href=#65 id=65 data-nosnippet>65</a> <span class="doccomment">/// Flush the flownodes according to the flow id.
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<a href=#66 id=66 data-nosnippet>66</a> </span><span class="kw">async fn </span>flush_inner(
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<a href=#67 id=67 data-nosnippet>67</a> <span class="kw-2">&</span><span class="self">self</span>,
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<a href=#68 id=68 data-nosnippet>68</a> catalog: <span class="kw-2">&</span>str,
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<a href=#69 id=69 data-nosnippet>69</a> flow: <span class="kw-2">&</span>str,
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<a href=#70 id=70 data-nosnippet>70</a> ctx: QueryContextRef,
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<a href=#71 id=71 data-nosnippet>71</a> ) -> <span class="prelude-ty">Result</span><api::v1::flow::FlowResponse> {
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<a href=#72 id=72 data-nosnippet>72</a> <span class="kw">let </span>id = <span class="self">self
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<a href=#73 id=73 data-nosnippet>73</a> </span>.flow_metadata_manager
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<a href=#74 id=74 data-nosnippet>74</a> .flow_name_manager()
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<a href=#75 id=75 data-nosnippet>75</a> .get(catalog, flow)
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<a href=#76 id=76 data-nosnippet>76</a> .<span class="kw">await
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<a href=#77 id=77 data-nosnippet>77</a> </span>.map_err(BoxedError::new)
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<a href=#78 id=78 data-nosnippet>78</a> .context(common_query::error::ExecuteSnafu)<span class="question-mark">?
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<a href=#79 id=79 data-nosnippet>79</a> </span>.context(common_meta::error::FlowNotFoundSnafu {
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<a href=#80 id=80 data-nosnippet>80</a> flow_name: <span class="macro">format!</span>(<span class="string">"{}.{}"</span>, catalog, flow),
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<a href=#81 id=81 data-nosnippet>81</a> })
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<a href=#82 id=82 data-nosnippet>82</a> .map_err(BoxedError::new)
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<a href=#83 id=83 data-nosnippet>83</a> .context(common_query::error::ExecuteSnafu)<span class="question-mark">?
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<a href=#84 id=84 data-nosnippet>84</a> </span>.flow_id();
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<a href=#85 id=85 data-nosnippet>85</a>
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<a href=#86 id=86 data-nosnippet>86</a> <span class="kw">let </span>all_flownode_peers = <span class="self">self
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<a href=#87 id=87 data-nosnippet>87</a> </span>.flow_metadata_manager
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<a href=#88 id=88 data-nosnippet>88</a> .flow_route_manager()
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<a href=#89 id=89 data-nosnippet>89</a> .routes(id)
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<a href=#90 id=90 data-nosnippet>90</a> .<span class="kw">await
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<a href=#91 id=91 data-nosnippet>91</a> </span>.map_err(BoxedError::new)
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<a href=#92 id=92 data-nosnippet>92</a> .context(common_query::error::ExecuteSnafu)<span class="question-mark">?</span>;
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<a href=#93 id=93 data-nosnippet>93</a>
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<a href=#94 id=94 data-nosnippet>94</a> <span class="comment">// order of flownodes doesn't matter here
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<a href=#95 id=95 data-nosnippet>95</a> </span><span class="kw">let </span>all_flow_nodes = FuturesUnordered::from_iter(
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<a href=#96 id=96 data-nosnippet>96</a> all_flownode_peers
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<a href=#97 id=97 data-nosnippet>97</a> .iter()
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<a href=#98 id=98 data-nosnippet>98</a> .map(|(_key, peer)| <span class="self">self</span>.node_manager.flownode(peer.peer())),
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<a href=#99 id=99 data-nosnippet>99</a> )
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<a href=#100 id=100 data-nosnippet>100</a> .collect::<Vec<<span class="kw">_</span>>>()
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<a href=#101 id=101 data-nosnippet>101</a> .<span class="kw">await</span>;
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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> <span class="kw">let </span><span class="kw-2">mut </span>final_result: <span class="prelude-ty">Option</span><api::v1::flow::FlowResponse> = <span class="prelude-val">None</span>;
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<a href=#104 id=104 data-nosnippet>104</a> <span class="kw">for </span>node <span class="kw">in </span>all_flow_nodes {
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<a href=#105 id=105 data-nosnippet>105</a> <span class="kw">let </span>res = {
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<a href=#106 id=106 data-nosnippet>106</a> <span class="kw">use </span>api::v1::flow::{FlowRequest, FlushFlow, flow_request};
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<a href=#107 id=107 data-nosnippet>107</a> <span class="kw">let </span>flush_req = FlowRequest {
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<a href=#108 id=108 data-nosnippet>108</a> header: <span class="prelude-val">Some</span>(FlowRequestHeader {
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<a href=#109 id=109 data-nosnippet>109</a> tracing_context: TracingContext::from_current_span().to_w3c(),
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<a href=#110 id=110 data-nosnippet>110</a> query_context: <span class="prelude-val">Some</span>(to_meta_query_context(ctx.clone()).into()),
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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> body: <span class="prelude-val">Some</span>(flow_request::Body::Flush(FlushFlow {
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<a href=#113 id=113 data-nosnippet>113</a> flow_id: <span class="prelude-val">Some</span>(api::v1::FlowId { id }),
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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> node.handle(flush_req)
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<a href=#117 id=117 data-nosnippet>117</a> .<span class="kw">await
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<a href=#118 id=118 data-nosnippet>118</a> </span>.map_err(BoxedError::new)
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<a href=#119 id=119 data-nosnippet>119</a> .context(common_query::error::ExecuteSnafu)<span class="question-mark">?
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<a href=#120 id=120 data-nosnippet>120</a> </span>};
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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> <span class="kw">if let </span><span class="prelude-val">Some</span>(prev) = <span class="kw-2">&mut </span>final_result {
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<a href=#123 id=123 data-nosnippet>123</a> prev.affected_rows = res.affected_rows;
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<a href=#124 id=124 data-nosnippet>124</a> prev.affected_flows.extend(res.affected_flows);
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<a href=#125 id=125 data-nosnippet>125</a> prev.extensions.extend(res.extensions);
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<a href=#126 id=126 data-nosnippet>126</a> } <span class="kw">else </span>{
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<a href=#127 id=127 data-nosnippet>127</a> final_result = <span class="prelude-val">Some</span>(res);
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<a href=#128 id=128 data-nosnippet>128</a> }
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<a href=#129 id=129 data-nosnippet>129</a> }
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<a href=#130 id=130 data-nosnippet>130</a>
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<a href=#131 id=131 data-nosnippet>131</a> final_result.context(common_query::error::FlownodeNotFoundSnafu)
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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>}
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</code></pre></div></section></main></body></html> |