Examples with ClusterPlugin org.opensearch.plugins.ClusterPlugin used on opensource projects

Example 1 with ClusterPlugin

use of org.opensearch.plugins.ClusterPlugin in project OpenSearch by opensearch-project.

the class ClusterModule method createAllocationDeciders.

// TODO: this is public so allocation benchmark can access the default deciders...can we do that in another way?
/**
 * Return a new {@link AllocationDecider} instance with builtin deciders as well as those from plugins.
 */
public static Collection<AllocationDecider> createAllocationDeciders(Settings settings, ClusterSettings clusterSettings, List<ClusterPlugin> clusterPlugins) {
    // collect deciders by class so that we can detect duplicates
    Map<Class, AllocationDecider> deciders = new LinkedHashMap<>();
    addAllocationDecider(deciders, new MaxRetryAllocationDecider());
    addAllocationDecider(deciders, new ResizeAllocationDecider());
    addAllocationDecider(deciders, new ReplicaAfterPrimaryActiveAllocationDecider());
    addAllocationDecider(deciders, new RebalanceOnlyWhenActiveAllocationDecider());
    addAllocationDecider(deciders, new ClusterRebalanceAllocationDecider(settings, clusterSettings));
    addAllocationDecider(deciders, new ConcurrentRebalanceAllocationDecider(settings, clusterSettings));
    addAllocationDecider(deciders, new ConcurrentRecoveriesAllocationDecider(settings, clusterSettings));
    addAllocationDecider(deciders, new EnableAllocationDecider(settings, clusterSettings));
    addAllocationDecider(deciders, new NodeVersionAllocationDecider());
    addAllocationDecider(deciders, new SnapshotInProgressAllocationDecider());
    addAllocationDecider(deciders, new RestoreInProgressAllocationDecider());
    addAllocationDecider(deciders, new FilterAllocationDecider(settings, clusterSettings));
    addAllocationDecider(deciders, new SameShardAllocationDecider(settings, clusterSettings));
    addAllocationDecider(deciders, new DiskThresholdDecider(settings, clusterSettings));
    addAllocationDecider(deciders, new ThrottlingAllocationDecider(settings, clusterSettings));
    addAllocationDecider(deciders, new ShardsLimitAllocationDecider(settings, clusterSettings));
    addAllocationDecider(deciders, new AwarenessAllocationDecider(settings, clusterSettings));
    addAllocationDecider(deciders, new NodeLoadAwareAllocationDecider(settings, clusterSettings));
    clusterPlugins.stream().flatMap(p -> p.createAllocationDeciders(settings, clusterSettings).stream()).forEach(d -> addAllocationDecider(deciders, d));
    return deciders.values();
}

Example 2 with ClusterPlugin

use of org.opensearch.plugins.ClusterPlugin in project OpenSearch by opensearch-project.

the class ClusterModuleTests method testRegisterAllocationDeciderDuplicate.

public void testRegisterAllocationDeciderDuplicate() {
    IllegalArgumentException e = expectThrows(IllegalArgumentException.class, () -> new ClusterModule(Settings.EMPTY, clusterService, Collections.<ClusterPlugin>singletonList(new ClusterPlugin() {

        @Override
        public Collection<AllocationDecider> createAllocationDeciders(Settings settings, ClusterSettings clusterSettings) {
            return Collections.singletonList(new EnableAllocationDecider(settings, clusterSettings));
        }
    }), clusterInfoService, null, threadContext));
    assertEquals(e.getMessage(), "Cannot specify allocation decider [" + EnableAllocationDecider.class.getName() + "] twice");
}

Example 3 with ClusterPlugin

use of org.opensearch.plugins.ClusterPlugin in project OpenSearch by opensearch-project.

the class Node method start.

/**
 * Start the node. If the node is already started, this method is no-op.
 */
public Node start() throws NodeValidationException {
    if (!lifecycle.moveToStarted()) {
        return this;
    }
    logger.info("starting ...");
    pluginLifecycleComponents.forEach(LifecycleComponent::start);
    injector.getInstance(MappingUpdatedAction.class).setClient(client);
    injector.getInstance(IndicesService.class).start();
    injector.getInstance(IndicesClusterStateService.class).start();
    injector.getInstance(SnapshotsService.class).start();
    injector.getInstance(SnapshotShardsService.class).start();
    injector.getInstance(RepositoriesService.class).start();
    injector.getInstance(SearchService.class).start();
    injector.getInstance(FsHealthService.class).start();
    nodeService.getMonitorService().start();
    final ClusterService clusterService = injector.getInstance(ClusterService.class);
    final NodeConnectionsService nodeConnectionsService = injector.getInstance(NodeConnectionsService.class);
    nodeConnectionsService.start();
    clusterService.setNodeConnectionsService(nodeConnectionsService);
    injector.getInstance(GatewayService.class).start();
    Discovery discovery = injector.getInstance(Discovery.class);
    clusterService.getMasterService().setClusterStatePublisher(discovery::publish);
    // Start the transport service now so the publish address will be added to the local disco node in ClusterService
    TransportService transportService = injector.getInstance(TransportService.class);
    transportService.getTaskManager().setTaskResultsService(injector.getInstance(TaskResultsService.class));
    transportService.getTaskManager().setTaskCancellationService(new TaskCancellationService(transportService));
    transportService.start();
    assert localNodeFactory.getNode() != null;
    assert transportService.getLocalNode().equals(localNodeFactory.getNode()) : "transportService has a different local node than the factory provided";
    injector.getInstance(PeerRecoverySourceService.class).start();
    // Load (and maybe upgrade) the metadata stored on disk
    final GatewayMetaState gatewayMetaState = injector.getInstance(GatewayMetaState.class);
    gatewayMetaState.start(settings(), transportService, clusterService, injector.getInstance(MetaStateService.class), injector.getInstance(MetadataIndexUpgradeService.class), injector.getInstance(MetadataUpgrader.class), injector.getInstance(PersistedClusterStateService.class));
    if (Assertions.ENABLED) {
        try {
            assert injector.getInstance(MetaStateService.class).loadFullState().v1().isEmpty();
            final NodeMetadata nodeMetadata = NodeMetadata.FORMAT.loadLatestState(logger, NamedXContentRegistry.EMPTY, nodeEnvironment.nodeDataPaths());
            assert nodeMetadata != null;
            assert nodeMetadata.nodeVersion().equals(Version.CURRENT);
            assert nodeMetadata.nodeId().equals(localNodeFactory.getNode().getId());
        } catch (IOException e) {
            assert false : e;
        }
    }
    // we load the global state here (the persistent part of the cluster state stored on disk) to
    // pass it to the bootstrap checks to allow plugins to enforce certain preconditions based on the recovered state.
    final Metadata onDiskMetadata = gatewayMetaState.getPersistedState().getLastAcceptedState().metadata();
    // this is never null
    assert onDiskMetadata != null : "metadata is null but shouldn't";
    validateNodeBeforeAcceptingRequests(new BootstrapContext(environment, onDiskMetadata), transportService.boundAddress(), pluginsService.filterPlugins(Plugin.class).stream().flatMap(p -> p.getBootstrapChecks().stream()).collect(Collectors.toList()));
    clusterService.addStateApplier(transportService.getTaskManager());
    // start after transport service so the local disco is known
    // start before cluster service so that it can set initial state on ClusterApplierService
    discovery.start();
    clusterService.start();
    assert clusterService.localNode().equals(localNodeFactory.getNode()) : "clusterService has a different local node than the factory provided";
    transportService.acceptIncomingRequests();
    discovery.startInitialJoin();
    final TimeValue initialStateTimeout = DiscoverySettings.INITIAL_STATE_TIMEOUT_SETTING.get(settings());
    configureNodeAndClusterIdStateListener(clusterService);
    if (initialStateTimeout.millis() > 0) {
        final ThreadPool thread = injector.getInstance(ThreadPool.class);
        ClusterState clusterState = clusterService.state();
        ClusterStateObserver observer = new ClusterStateObserver(clusterState, clusterService, null, logger, thread.getThreadContext());
        if (clusterState.nodes().getMasterNodeId() == null) {
            logger.debug("waiting to join the cluster. timeout [{}]", initialStateTimeout);
            final CountDownLatch latch = new CountDownLatch(1);
            observer.waitForNextChange(new ClusterStateObserver.Listener() {

                @Override
                public void onNewClusterState(ClusterState state) {
                    latch.countDown();
                }

                @Override
                public void onClusterServiceClose() {
                    latch.countDown();
                }

                @Override
                public void onTimeout(TimeValue timeout) {
                    logger.warn("timed out while waiting for initial discovery state - timeout: {}", initialStateTimeout);
                    latch.countDown();
                }
            }, state -> state.nodes().getMasterNodeId() != null, initialStateTimeout);
            try {
                latch.await();
            } catch (InterruptedException e) {
                throw new OpenSearchTimeoutException("Interrupted while waiting for initial discovery state");
            }
        }
    }
    injector.getInstance(HttpServerTransport.class).start();
    if (WRITE_PORTS_FILE_SETTING.get(settings())) {
        TransportService transport = injector.getInstance(TransportService.class);
        writePortsFile("transport", transport.boundAddress());
        HttpServerTransport http = injector.getInstance(HttpServerTransport.class);
        writePortsFile("http", http.boundAddress());
    }
    logger.info("started");
    pluginsService.filterPlugins(ClusterPlugin.class).forEach(ClusterPlugin::onNodeStarted);
    return this;
}

Example 4 with ClusterPlugin

use of org.opensearch.plugins.ClusterPlugin in project OpenSearch by opensearch-project.

the class ClusterModule method createShardsAllocator.

private static ShardsAllocator createShardsAllocator(Settings settings, ClusterSettings clusterSettings, List<ClusterPlugin> clusterPlugins) {
    Map<String, Supplier<ShardsAllocator>> allocators = new HashMap<>();
    allocators.put(BALANCED_ALLOCATOR, () -> new BalancedShardsAllocator(settings, clusterSettings));
    for (ClusterPlugin plugin : clusterPlugins) {
        plugin.getShardsAllocators(settings, clusterSettings).forEach((k, v) -> {
            if (allocators.put(k, v) != null) {
                throw new IllegalArgumentException("ShardsAllocator [" + k + "] already defined");
            }
        });
    }
    String allocatorName = SHARDS_ALLOCATOR_TYPE_SETTING.get(settings);
    Supplier<ShardsAllocator> allocatorSupplier = allocators.get(allocatorName);
    if (allocatorSupplier == null) {
        throw new IllegalArgumentException("Unknown ShardsAllocator [" + allocatorName + "]");
    }
    return Objects.requireNonNull(allocatorSupplier.get(), "ShardsAllocator factory for [" + allocatorName + "] returned null");
}

Example 5 with ClusterPlugin

use of org.opensearch.plugins.ClusterPlugin in project OpenSearch by opensearch-project.

the class ClusterModule method setExistingShardsAllocators.

public void setExistingShardsAllocators(GatewayAllocator gatewayAllocator) {
    final Map<String, ExistingShardsAllocator> existingShardsAllocators = new HashMap<>();
    existingShardsAllocators.put(GatewayAllocator.ALLOCATOR_NAME, gatewayAllocator);
    for (ClusterPlugin clusterPlugin : clusterPlugins) {
        for (Map.Entry<String, ExistingShardsAllocator> existingShardsAllocatorEntry : clusterPlugin.getExistingShardsAllocators().entrySet()) {
            final String allocatorName = existingShardsAllocatorEntry.getKey();
            if (existingShardsAllocators.put(allocatorName, existingShardsAllocatorEntry.getValue()) != null) {
                throw new IllegalArgumentException("ExistingShardsAllocator [" + allocatorName + "] from [" + clusterPlugin.getClass().getName() + "] was already defined");
            }
        }
    }
    allocationService.setExistingShardsAllocators(existingShardsAllocators);
}