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130
gateway-ha/src/main/java/io/trino/gateway/ha/router/BackendStateMBeanExporter.java
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|---|---|---|
| @@ -0,0 +1,130 @@ | ||
| /* | ||
| * 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 | ||
| * | ||
| * http://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. | ||
| */ | ||
| package io.trino.gateway.ha.router; | ||
|
|
||
| import com.google.common.collect.ImmutableMap; | ||
| import com.google.errorprone.annotations.concurrent.GuardedBy; | ||
| import com.google.inject.Inject; | ||
| import io.trino.gateway.ha.clustermonitor.ClusterStats; | ||
| import jakarta.annotation.PostConstruct; | ||
| import jakarta.annotation.PreDestroy; | ||
| import org.weakref.jmx.MBeanExport; | ||
| import org.weakref.jmx.MBeanExporter; | ||
| import org.weakref.jmx.Managed; | ||
|
|
||
| import java.util.ArrayList; | ||
| import java.util.HashMap; | ||
| import java.util.List; | ||
| import java.util.Map; | ||
|
|
||
| import static java.util.Objects.requireNonNull; | ||
|
|
||
| public class BackendStateMBeanExporter | ||
| { | ||
| @GuardedBy("this") | ||
| private final List<MBeanExport> mbeanExports = new ArrayList<>(); | ||
|
|
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| private final MBeanExporter exporter; | ||
| private final BackendStateManager backendStateManager; | ||
| private final Map<String, ClusterStatsJMX> backendStates = new HashMap<>(); | ||
|
|
||
| @Inject | ||
| public BackendStateMBeanExporter(MBeanExporter exporter, BackendStateManager backendStateManager) | ||
| { | ||
| this.exporter = requireNonNull(exporter, "exporter is null"); | ||
| this.backendStateManager = requireNonNull(backendStateManager, "backendStateManager is null"); | ||
| } | ||
|
|
||
| @PostConstruct | ||
| public synchronized void updateExport() | ||
| { | ||
| for (ClusterStats clusterStats : backendStateManager.getAllBackendStates().values()) { | ||
| String clusterId = clusterStats.clusterId(); | ||
|
|
||
| if (backendStates.containsKey(clusterId)) { | ||
| ClusterStatsJMX clusterStatsJMX = backendStates.get(clusterId); | ||
| clusterStatsJMX.setFrom(clusterStats); | ||
| } | ||
| else { | ||
| ClusterStatsJMX clusterStatsJMX = new ClusterStatsJMX(); | ||
| clusterStatsJMX.setFrom(clusterStats); | ||
| mbeanExports.add(exporter.exportWithGeneratedName( | ||
| clusterStatsJMX, | ||
| ClusterStatsJMX.class, | ||
| ImmutableMap.<String, String>builder() | ||
| .put("name", "ClusterStats") | ||
| .put("backend", clusterId) | ||
| .build())); | ||
| backendStates.put(clusterId, clusterStatsJMX); | ||
| } | ||
| } | ||
| } | ||
|
|
||
| @PreDestroy | ||
| public synchronized void unexport() | ||
| { | ||
| for (MBeanExport mbeanExport : mbeanExports) { | ||
| mbeanExport.unexport(); | ||
| } | ||
| mbeanExports.clear(); | ||
| } | ||
|
|
||
| public static class ClusterStatsJMX | ||
| { | ||
| private int numWorkerNodes; | ||
| private boolean healthy; | ||
| private String proxyTo; | ||
| private String externalUrl; | ||
| private String routingGroup; | ||
|
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| public void setFrom(ClusterStats clusterStats) | ||
| { | ||
| numWorkerNodes = clusterStats.numWorkerNodes(); | ||
| healthy = clusterStats.healthy(); | ||
| proxyTo = clusterStats.proxyTo(); | ||
| externalUrl = clusterStats.externalUrl(); | ||
| routingGroup = clusterStats.routingGroup(); | ||
| } | ||
|
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| @Managed | ||
| public int getNumWorkerNodes() | ||
| { | ||
| return numWorkerNodes; | ||
| } | ||
|
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| @Managed | ||
| public boolean isHealthy() | ||
| { | ||
| return healthy; | ||
| } | ||
|
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| @Managed | ||
| public String getProxyTo() | ||
| { | ||
| return proxyTo; | ||
| } | ||
|
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| @Managed | ||
| public String getExternalUrl() | ||
| { | ||
| return externalUrl; | ||
| } | ||
|
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| @Managed | ||
| public String getRoutingGroup() | ||
| { | ||
| return routingGroup; | ||
| } | ||
| } | ||
| } |
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