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[BugFix] Fix client couldn't cancel forward query (#52185)
Signed-off-by: stdpain <drfeng08@gmail.com> (cherry picked from commit cc3a33c) # Conflicts: # fe/fe-core/src/main/java/com/starrocks/qe/ConnectContext.java # fe/fe-core/src/main/java/com/starrocks/qe/ConnectProcessor.java # fe/fe-core/src/main/java/com/starrocks/qe/LeaderOpExecutor.java # fe/fe-core/src/main/java/com/starrocks/qe/StmtExecutor.java # gensrc/thrift/FrontendService.thrift
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fe/fe-core/src/main/java/com/starrocks/qe/ProxyContextManager.java
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,91 @@ | ||
| // Copyright 2021-present StarRocks, Inc. All rights reserved. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // https://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
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| package com.starrocks.qe; | ||
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| import com.google.common.collect.Maps; | ||
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| import java.util.Map; | ||
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| // When a query is forwarded from the follower FE to the leader FE, this ConnectContext on the leader is | ||
| // not managed by the ConnectScheduler. These ConnectContexts are managed by the ProxyContextManager. | ||
| // We can find these ConnectContexts on the leader by hostname and connection id, and perform operations such as kill. | ||
| public class ProxyContextManager { | ||
| private final Map<String, Map<Integer, ConnectContext>> connectionMaps = Maps.newConcurrentMap(); | ||
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| static ProxyContextManager instance = new ProxyContextManager(); | ||
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| public static ProxyContextManager getInstance() { | ||
| return instance; | ||
| } | ||
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| public ScopeGuard guard(String hostName, int connectionId, ConnectContext context, boolean set) { | ||
| return new ScopeGuard(this, hostName, connectionId, context, set); | ||
| } | ||
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| public synchronized void addContext(String hostname, Integer connectionId, ConnectContext context) { | ||
| final Map<Integer, ConnectContext> contextMap = | ||
| connectionMaps.computeIfAbsent(hostname, (String host) -> Maps.newConcurrentMap()); | ||
| contextMap.put(connectionId, context); | ||
| contextMap.computeIfAbsent(connectionId, cid -> context); | ||
| } | ||
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| public ConnectContext getContext(String hostname, Integer connectionId) { | ||
| final Map<Integer, ConnectContext> contextMap = connectionMaps.get(hostname); | ||
| if (contextMap == null) { | ||
| return null; | ||
| } | ||
| return contextMap.get(connectionId); | ||
| } | ||
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| public ConnectContext getContextByQueryId(String queryId) { | ||
| return connectionMaps.values().stream().flatMap(item -> item.values().stream()).filter(ctx -> | ||
| ctx.getQueryId() != null && queryId.equals(ctx.getQueryId().toString())).findFirst().orElse(null); | ||
| } | ||
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| public synchronized void remove(String hostname, Integer connectionId) { | ||
| final Map<Integer, ConnectContext> contextMap = connectionMaps.get(hostname); | ||
| if (contextMap != null) { | ||
| contextMap.remove(connectionId); | ||
| if (contextMap.isEmpty()) { | ||
| connectionMaps.remove(hostname); | ||
| } | ||
| } | ||
| } | ||
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| public static class ScopeGuard implements AutoCloseable { | ||
| private ProxyContextManager manager; | ||
| private boolean set = false; | ||
| private String hostName; | ||
| private int connectionId; | ||
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| public ScopeGuard(ProxyContextManager manager, String hostName, int connectionId, ConnectContext context, | ||
| boolean set) { | ||
| if (set) { | ||
| this.manager = manager; | ||
| this.hostName = hostName; | ||
| this.connectionId = connectionId; | ||
| manager.addContext(hostName, connectionId, context); | ||
| } | ||
| this.set = set; | ||
| } | ||
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| @Override | ||
| public void close() throws Exception { | ||
| if (set) { | ||
| manager.remove(hostName, connectionId); | ||
| } | ||
| } | ||
| } | ||
| } |
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