elasticSearch6源码分析ActionModule
Posted davidwang456
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1.ActionModule概述
/** * Builds and binds the generic action map, all {@link TransportAction}s, and {@link ActionFilters}. */
1.1 创建TransportAction
static Map<String, ActionHandler<?, ?>> setupActions(List<ActionPlugin> actionPlugins) { // Subclass NamedRegistry for easy registration class ActionRegistry extends NamedRegistry<ActionHandler<?, ?>> { ActionRegistry() { super("action"); } public void register(ActionHandler<?, ?> handler) { register(handler.getAction().name(), handler); } public <Request extends ActionRequest, Response extends ActionResponse> void register( Action<Response> action, Class<? extends TransportAction<Request, Response>> transportAction, Class<?>... supportTransportActions) { register(new ActionHandler<>(action, transportAction, supportTransportActions)); } } ActionRegistry actions = new ActionRegistry(); actions.register(MainAction.INSTANCE, TransportMainAction.class); actions.register(NodesInfoAction.INSTANCE, TransportNodesInfoAction.class); actions.register(RemoteInfoAction.INSTANCE, TransportRemoteInfoAction.class); actions.register(NodesStatsAction.INSTANCE, TransportNodesStatsAction.class); actions.register(NodesUsageAction.INSTANCE, TransportNodesUsageAction.class); actions.register(NodesHotThreadsAction.INSTANCE, TransportNodesHotThreadsAction.class); actions.register(ListTasksAction.INSTANCE, TransportListTasksAction.class); actions.register(GetTaskAction.INSTANCE, TransportGetTaskAction.class); actions.register(CancelTasksAction.INSTANCE, TransportCancelTasksAction.class); actions.register(ClusterAllocationExplainAction.INSTANCE, TransportClusterAllocationExplainAction.class); actions.register(ClusterStatsAction.INSTANCE, TransportClusterStatsAction.class); actions.register(ClusterStateAction.INSTANCE, TransportClusterStateAction.class); actions.register(ClusterHealthAction.INSTANCE, TransportClusterHealthAction.class); actions.register(ClusterUpdateSettingsAction.INSTANCE, TransportClusterUpdateSettingsAction.class); actions.register(ClusterRerouteAction.INSTANCE, TransportClusterRerouteAction.class); actions.register(ClusterSearchShardsAction.INSTANCE, TransportClusterSearchShardsAction.class); actions.register(PendingClusterTasksAction.INSTANCE, TransportPendingClusterTasksAction.class); actions.register(PutRepositoryAction.INSTANCE, TransportPutRepositoryAction.class); actions.register(GetRepositoriesAction.INSTANCE, TransportGetRepositoriesAction.class); actions.register(DeleteRepositoryAction.INSTANCE, TransportDeleteRepositoryAction.class); actions.register(VerifyRepositoryAction.INSTANCE, TransportVerifyRepositoryAction.class); actions.register(GetSnapshotsAction.INSTANCE, TransportGetSnapshotsAction.class); actions.register(DeleteSnapshotAction.INSTANCE, TransportDeleteSnapshotAction.class); actions.register(CreateSnapshotAction.INSTANCE, TransportCreateSnapshotAction.class); actions.register(RestoreSnapshotAction.INSTANCE, TransportRestoreSnapshotAction.class); actions.register(SnapshotsStatusAction.INSTANCE, TransportSnapshotsStatusAction.class); actions.register(IndicesStatsAction.INSTANCE, TransportIndicesStatsAction.class); actions.register(IndicesSegmentsAction.INSTANCE, TransportIndicesSegmentsAction.class); actions.register(IndicesShardStoresAction.INSTANCE, TransportIndicesShardStoresAction.class); actions.register(CreateIndexAction.INSTANCE, TransportCreateIndexAction.class); actions.register(ResizeAction.INSTANCE, TransportResizeAction.class); actions.register(RolloverAction.INSTANCE, TransportRolloverAction.class); actions.register(DeleteIndexAction.INSTANCE, TransportDeleteIndexAction.class); actions.register(GetIndexAction.INSTANCE, TransportGetIndexAction.class); actions.register(OpenIndexAction.INSTANCE, TransportOpenIndexAction.class); actions.register(CloseIndexAction.INSTANCE, TransportCloseIndexAction.class); actions.register(IndicesExistsAction.INSTANCE, TransportIndicesExistsAction.class); actions.register(TypesExistsAction.INSTANCE, TransportTypesExistsAction.class); actions.register(GetMappingsAction.INSTANCE, TransportGetMappingsAction.class); actions.register(GetFieldMappingsAction.INSTANCE, TransportGetFieldMappingsAction.class, TransportGetFieldMappingsIndexAction.class); actions.register(PutMappingAction.INSTANCE, TransportPutMappingAction.class); actions.register(IndicesAliasesAction.INSTANCE, TransportIndicesAliasesAction.class); actions.register(UpdateSettingsAction.INSTANCE, TransportUpdateSettingsAction.class); actions.register(AnalyzeAction.INSTANCE, TransportAnalyzeAction.class); actions.register(PutIndexTemplateAction.INSTANCE, TransportPutIndexTemplateAction.class); actions.register(GetIndexTemplatesAction.INSTANCE, TransportGetIndexTemplatesAction.class); actions.register(DeleteIndexTemplateAction.INSTANCE, TransportDeleteIndexTemplateAction.class); actions.register(ValidateQueryAction.INSTANCE, TransportValidateQueryAction.class); actions.register(RefreshAction.INSTANCE, TransportRefreshAction.class); actions.register(FlushAction.INSTANCE, TransportFlushAction.class); actions.register(SyncedFlushAction.INSTANCE, TransportSyncedFlushAction.class); actions.register(ForceMergeAction.INSTANCE, TransportForceMergeAction.class); actions.register(UpgradeAction.INSTANCE, TransportUpgradeAction.class); actions.register(UpgradeStatusAction.INSTANCE, TransportUpgradeStatusAction.class); actions.register(UpgradeSettingsAction.INSTANCE, TransportUpgradeSettingsAction.class); actions.register(ClearIndicesCacheAction.INSTANCE, TransportClearIndicesCacheAction.class); actions.register(GetAliasesAction.INSTANCE, TransportGetAliasesAction.class); actions.register(AliasesExistAction.INSTANCE, TransportAliasesExistAction.class); actions.register(GetSettingsAction.INSTANCE, TransportGetSettingsAction.class); actions.register(IndexAction.INSTANCE, TransportIndexAction.class); actions.register(GetAction.INSTANCE, TransportGetAction.class); actions.register(TermVectorsAction.INSTANCE, TransportTermVectorsAction.class); actions.register(MultiTermVectorsAction.INSTANCE, TransportMultiTermVectorsAction.class, TransportShardMultiTermsVectorAction.class); actions.register(DeleteAction.INSTANCE, TransportDeleteAction.class); actions.register(UpdateAction.INSTANCE, TransportUpdateAction.class); actions.register(MultiGetAction.INSTANCE, TransportMultiGetAction.class, TransportShardMultiGetAction.class); actions.register(BulkAction.INSTANCE, TransportBulkAction.class, TransportShardBulkAction.class); actions.register(SearchAction.INSTANCE, TransportSearchAction.class); actions.register(SearchScrollAction.INSTANCE, TransportSearchScrollAction.class); actions.register(MultiSearchAction.INSTANCE, TransportMultiSearchAction.class); actions.register(ExplainAction.INSTANCE, TransportExplainAction.class); actions.register(ClearScrollAction.INSTANCE, TransportClearScrollAction.class); actions.register(RecoveryAction.INSTANCE, TransportRecoveryAction.class); actions.register(NodesReloadSecureSettingsAction.INSTANCE, TransportNodesReloadSecureSettingsAction.class); //Indexed scripts actions.register(PutStoredScriptAction.INSTANCE, TransportPutStoredScriptAction.class); actions.register(GetStoredScriptAction.INSTANCE, TransportGetStoredScriptAction.class); actions.register(DeleteStoredScriptAction.INSTANCE, TransportDeleteStoredScriptAction.class); actions.register(FieldCapabilitiesAction.INSTANCE, TransportFieldCapabilitiesAction.class, TransportFieldCapabilitiesIndexAction.class); actions.register(PutPipelineAction.INSTANCE, PutPipelineTransportAction.class); actions.register(GetPipelineAction.INSTANCE, GetPipelineTransportAction.class); actions.register(DeletePipelineAction.INSTANCE, DeletePipelineTransportAction.class); actions.register(SimulatePipelineAction.INSTANCE, SimulatePipelineTransportAction.class); actionPlugins.stream().flatMap(p -> p.getActions().stream()).forEach(actions::register); // Persistent tasks: actions.register(StartPersistentTaskAction.INSTANCE, StartPersistentTaskAction.TransportAction.class); actions.register(UpdatePersistentTaskStatusAction.INSTANCE, UpdatePersistentTaskStatusAction.TransportAction.class); actions.register(CompletionPersistentTaskAction.INSTANCE, CompletionPersistentTaskAction.TransportAction.class); actions.register(RemovePersistentTaskAction.INSTANCE, RemovePersistentTaskAction.TransportAction.class); return unmodifiableMap(actions.getRegistry()); }
其类层次结构如下
1.2 创建ActionFilter
private ActionFilters setupActionFilters(List<ActionPlugin> actionPlugins) { return new ActionFilters( Collections.unmodifiableSet(actionPlugins.stream().flatMap(p -> p.getActionFilters().stream()).collect(Collectors.toSet()))); }
2.ActionModule使用
ActionModule actionModule = new ActionModule(false, settings, clusterModule.getIndexNameExpressionResolver(), settingsModule.getIndexScopedSettings(), settingsModule.getClusterSettings(), settingsModule.getSettingsFilter(), threadPool, pluginsService.filterPlugins(ActionPlugin.class), client, circuitBreakerService, usageService); modules.add(actionModule); final RestController restController = actionModule.getRestController(); actionModule.initRestHandlers(() -> clusterService.state().nodes());
增加了rest服务的处理handler
public void initRestHandlers(Supplier<DiscoveryNodes> nodesInCluster) { List<AbstractCatAction> catActions = new ArrayList<>(); Consumer<RestHandler> registerHandler = a -> { if (a instanceof AbstractCatAction) { catActions.add((AbstractCatAction) a); } }; registerHandler.accept(new RestMainAction(settings, restController)); registerHandler.accept(new RestNodesInfoAction(settings, restController, settingsFilter)); registerHandler.accept(new RestRemoteClusterInfoAction(settings, restController)); registerHandler.accept(new RestNodesStatsAction(settings, restController)); registerHandler.accept(new RestNodesUsageAction(settings, restController)); registerHandler.accept(new RestNodesHotThreadsAction(settings, restController)); registerHandler.accept(new RestClusterAllocationExplainAction(settings, restController)); registerHandler.accept(new RestClusterStatsAction(settings, restController)); registerHandler.accept(new RestClusterStateAction(settings, restController, settingsFilter)); registerHandler.accept(new RestClusterHealthAction(settings, restController)); registerHandler.accept(new RestClusterUpdateSettingsAction(settings, restController)); registerHandler.accept(new RestClusterGetSettingsAction(settings, restController, clusterSettings, settingsFilter)); registerHandler.accept(new RestClusterRerouteAction(settings, restController, settingsFilter)); registerHandler.accept(new RestClusterSearchShardsAction(settings, restController)); registerHandler.accept(new RestPendingClusterTasksAction(settings, restController)); registerHandler.accept(new RestPutRepositoryAction(settings, restController)); registerHandler.accept(new RestGetRepositoriesAction(settings, restController, settingsFilter)); registerHandler.accept(new RestDeleteRepositoryAction(settings, restController)); registerHandler.accept(new RestVerifyRepositoryAction(settings, restController)); registerHandler.accept(new RestGetSnapshotsAction(settings, restController)); registerHandler.accept(new RestCreateSnapshotAction(settings, restController)); registerHandler.accept(new RestRestoreSnapshotAction(settings, restController)); registerHandler.accept(new RestDeleteSnapshotAction(settings, restController)); registerHandler.accept(new RestSnapshotsStatusAction(settings, restController)); registerHandler.accept(new RestGetIndicesAction(settings, restController)); registerHandler.accept(new RestIndicesStatsAction(settings, restController)); registerHandler.accept(new RestIndicesSegmentsAction(settings, restController)); registerHandler.accept(new RestIndicesShardStoresAction(settings, restController)); registerHandler.accept(new RestGetAliasesAction(settings, restController)); registerHandler.accept(new RestIndexDeleteAliasesAction(settings, restController)); registerHandler.accept(new RestIndexPutAliasAction(settings, restController)); registerHandler.accept(new RestIndicesAliasesAction(settings, restController)); registerHandler.accept(new RestCreateIndexAction(settings, restController)); registerHandler.accept(new RestResizeHandler.RestShrinkIndexAction(settings, restController)); registerHandler.accept(new RestResizeHandler.RestSplitIndexAction(settings, restController)); registerHandler.accept(new RestRolloverIndexAction(settings, restController)); registerHandler.accept(new RestDeleteIndexAction(settings, restController)); registerHandler.accept(new RestCloseIndexAction(settings, restController)); registerHandler.accept(new RestOpenIndexAction(settings, restController)); registerHandler.accept(new RestUpdateSettingsAction(settings, restController)); registerHandler.accept(new RestGetSettingsAction(settings, restController)); registerHandler.accept(new RestAnalyzeAction(settings, restController)); registerHandler.accept(new RestGetIndexTemplateAction(settings, restController)); registerHandler.accept(new RestPutIndexTemplateAction(settings, restController)); registerHandler.accept(new RestDeleteIndexTemplateAction(settings, restController)); registerHandler.accept(new RestPutMappingAction(settings, restController)); registerHandler.accept(new RestGetMappingAction(settings, restController)); registerHandler.accept(new RestGetFieldMappingAction(settings, restController)); registerHandler.accept(new RestRefreshAction(settings, restController)); registerHandler.accept(new RestFlushAction(settings, restController)); registerHandler.accept(new RestSyncedFlushAction(settings, restController)); registerHandler.accept(new RestForceMergeAction(settings, restController)); registerHandler.accept(new RestUpgradeAction(settings, restController)); registerHandler.accept(new RestUpgradeStatusAction(settings, restController)); registerHandler.accept(new RestClearIndicesCacheAction(settings, restController)); registerHandler.accept(new RestIndexAction(settings, restController)); registerHandler.accept(new RestGetAction(settings, restController)); registerHandler.accept(new RestGetSourceAction(settings, restController)); registerHandler.accept(new RestMultiGetAction(settings, restController)); registerHandler.accept(new RestDeleteAction(settings, restController)); registerHandler.accept(new org.elasticsearch.rest.action.document.RestCountAction(settings, restController)); registerHandler.accept(new RestTermVectorsAction(settings, restController)); registerHandler.accept(new RestMultiTermVectorsAction(settings, restController)); registerHandler.accept(new RestBulkAction(settings, restController)); registerHandler.accept(new RestUpdateAction(settings, restController)); registerHandler.accept(new RestSearchAction(settings, restController)); registerHandler.accept(new RestSearchScrollAction(settings, restController)); registerHandler.accept(new RestClearScrollAction(settings, restController)); registerHandler.accept(new RestMultiSearchAction(settings, restController)); registerHandler.accept(new RestValidateQueryAction(settings, restController)); registerHandler.accept(new RestExplainAction(settings, restController)); registerHandler.accept(new RestRecoveryAction(settings, restController)); registerHandler.accept(new RestReloadSecureSettingsAction(settings, restController)); // Scripts API registerHandler.accept(new RestGetStoredScriptAction(settings, restController)); registerHandler.accept(new RestPutStoredScriptAction(settings, restController)); registerHandler.accept(new RestDeleteStoredScriptAction(settings, restController)); registerHandler.accept(new RestFieldCapabilitiesAction(settings, restController)); // Tasks API registerHandler.accept(new RestListTasksAction(settings, restController, nodesInCluster)); registerHandler.accept(new RestGetTaskAction(settings, restController)); registerHandler.accept(new RestCancelTasksAction(settings, restController, nodesInCluster)); // Ingest API registerHandler.accept(new RestPutPipelineAction(settings, restController)); registerHandler.accept(new RestGetPipelineAction(settings, restController)); registerHandler.accept(new RestDeletePipelineAction(settings, restController)); registerHandler.accept(new RestSimulatePipelineAction(settings, restController)); // CAT API registerHandler.accept(new RestAllocationAction(settings, restController)); registerHandler.accept(new RestShardsAction(settings, restController)); registerHandler.accept(new RestMasterAction(settings, restController)); registerHandler.accept(new RestNodesAction(settings, restController)); registerHandler.accept(new RestTasksAction(settings, restController, nodesInCluster)); registerHandler.accept(new RestIndicesAction(settings, restController, indexNameExpressionResolver)); registerHandler.accept(new RestSegmentsAction(settings, restController)); // Fully qualified to prevent interference with rest.action.count.RestCountAction registerHandler.accept(new org.elasticsearch.rest.action.cat.RestCountAction(settings, restController)); // Fully qualified to prevent interference with rest.action.indices.RestRecoveryAction registerHandler.accept(new org.elasticsearch.rest.action.cat.RestRecoveryAction(settings, restController)); registerHandler.accept(new RestHealthAction(settings, restController)); registerHandler.accept(new org.elasticsearch.rest.action.cat.RestPendingClusterTasksAction(settings, restController)); registerHandler.accept(new RestAliasAction(settings, restController)); registerHandler.accept(new RestThreadPoolAction(settings, restController)); registerHandler.accept(new RestPluginsAction(settings, restController)); registerHandler.accept(new RestFielddataAction(settings, restController)); registerHandler.accept(new RestNodeAttrsAction(settings, restController)); registerHandler.accept(new RestRepositoriesAction(settings, restController)); registerHandler.accept(new RestSnapshotAction(settings, restController)); registerHandler.accept(new RestTemplatesAction(settings, restController)); for (ActionPlugin plugin : actionPlugins) { for (RestHandler handler : plugin.getRestHandlers(settings, restController, clusterSettings, indexScopedSettings, settingsFilter, indexNameExpressionResolver, nodesInCluster)) { registerHandler.accept(handler); } } registerHandler.accept(new RestCatAction(settings, restController, catActions)); }
类层次关系如下：
3.小结
actionModule定义了处理tcp和http服务的handler。
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