CoreModuleProvider.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 org.apache.skywalking.oap.server.core;

import java.io.IOException;
import org.apache.skywalking.oap.server.configuration.api.ConfigurationModule;
import org.apache.skywalking.oap.server.core.analysis.*;
import org.apache.skywalking.oap.server.core.analysis.worker.MetricsStreamProcessor;
import org.apache.skywalking.oap.server.core.annotation.AnnotationScan;
import org.apache.skywalking.oap.server.core.cache.*;
import org.apache.skywalking.oap.server.core.cluster.*;
import org.apache.skywalking.oap.server.core.config.*;
import org.apache.skywalking.oap.server.core.oal.rt.*;
import org.apache.skywalking.oap.server.core.query.*;
import org.apache.skywalking.oap.server.core.register.service.*;
import org.apache.skywalking.oap.server.core.remote.*;
import org.apache.skywalking.oap.server.core.remote.client.*;
import org.apache.skywalking.oap.server.core.remote.health.HealthCheckServiceHandler;
import org.apache.skywalking.oap.server.core.server.*;
import org.apache.skywalking.oap.server.core.source.*;
import org.apache.skywalking.oap.server.core.storage.PersistenceTimer;
import org.apache.skywalking.oap.server.core.storage.model.*;
import org.apache.skywalking.oap.server.core.storage.ttl.DataTTLKeeperTimer;
import org.apache.skywalking.oap.server.core.worker.*;
import org.apache.skywalking.oap.server.library.module.*;
import org.apache.skywalking.oap.server.library.server.ServerException;
import org.apache.skywalking.oap.server.library.server.grpc.GRPCServer;
import org.apache.skywalking.oap.server.library.server.jetty.JettyServer;
import org.apache.skywalking.oap.server.telemetry.TelemetryModule;

/**
 * @author peng-yongsheng
 */
public class CoreModuleProvider extends ModuleProvider {

    private final CoreModuleConfig moduleConfig;
    private GRPCServer grpcServer;
    private JettyServer jettyServer;
    private RemoteClientManager remoteClientManager;
    private final AnnotationScan annotationScan;
    private final StorageModels storageModels;
    private final SourceReceiverImpl receiver;
    private OALEngine oalEngine;

    public CoreModuleProvider() {
        super();
        this.moduleConfig = new CoreModuleConfig();
        this.annotationScan = new AnnotationScan();
        this.storageModels = new StorageModels();
        this.receiver = new SourceReceiverImpl();
    }

    @Override public String name() {
        return "default";
    }

    @Override public Class<? extends ModuleDefine> module() {
        return CoreModule.class;
    }

    @Override public ModuleConfig createConfigBeanIfAbsent() {
        return moduleConfig;
    }

    @Override public void prepare() throws ServiceNotProvidedException, ModuleStartException {
        StreamAnnotationListener streamAnnotationListener = new StreamAnnotationListener(getManager());

        AnnotationScan scopeScan = new AnnotationScan();
        scopeScan.registerListener(new DefaultScopeDefine.Listener());
        try {
            scopeScan.scan();

            oalEngine = OALEngineLoader.get();
            oalEngine.setStreamListener(streamAnnotationListener);
            oalEngine.setDispatcherListener(receiver.getDispatcherManager());
            oalEngine.start(getClass().getClassLoader());
        } catch (Exception e) {
            throw new ModuleStartException(e.getMessage(), e);
        }

        AnnotationScan oalDisable = new AnnotationScan();
        oalDisable.registerListener(DisableRegister.INSTANCE);
        oalDisable.registerListener(new DisableRegister.SingleDisableScanListener());
        try {
            oalDisable.scan();
        } catch (IOException e) {
            throw new ModuleStartException(e.getMessage(), e);
        }

        grpcServer = new GRPCServer(moduleConfig.getGRPCHost(), moduleConfig.getGRPCPort());
        if (moduleConfig.getMaxConcurrentCallsPerConnection() > 0) {
            grpcServer.setMaxConcurrentCallsPerConnection(moduleConfig.getMaxConcurrentCallsPerConnection());
        }
        if (moduleConfig.getMaxMessageSize() > 0) {
            grpcServer.setMaxMessageSize(moduleConfig.getMaxMessageSize());
        }
        grpcServer.initialize();

        jettyServer = new JettyServer(moduleConfig.getRestHost(), moduleConfig.getRestPort(), moduleConfig.getRestContextPath(), moduleConfig.getJettySelectors());
        jettyServer.initialize();

        this.registerServiceImplementation(ConfigService.class, new ConfigService(moduleConfig));
        this.registerServiceImplementation(DownsamplingConfigService.class, new DownsamplingConfigService(moduleConfig.getDownsampling()));

        this.registerServiceImplementation(GRPCHandlerRegister.class, new GRPCHandlerRegisterImpl(grpcServer));
        this.registerServiceImplementation(JettyHandlerRegister.class, new JettyHandlerRegisterImpl(jettyServer));

        this.registerServiceImplementation(IComponentLibraryCatalogService.class, new ComponentLibraryCatalogService());

        this.registerServiceImplementation(SourceReceiver.class, receiver);

        WorkerInstancesService instancesService = new WorkerInstancesService();
        this.registerServiceImplementation(IWorkerInstanceGetter.class, instancesService);
        this.registerServiceImplementation(IWorkerInstanceSetter.class, instancesService);

        this.registerServiceImplementation(RemoteSenderService.class, new RemoteSenderService(getManager()));
        this.registerServiceImplementation(IModelSetter.class, storageModels);
        this.registerServiceImplementation(IModelGetter.class, storageModels);
        this.registerServiceImplementation(IModelOverride.class, storageModels);

        this.registerServiceImplementation(ServiceInventoryCache.class, new ServiceInventoryCache(getManager()));
        this.registerServiceImplementation(IServiceInventoryRegister.class, new ServiceInventoryRegister(getManager()));

        this.registerServiceImplementation(ServiceInstanceInventoryCache.class, new ServiceInstanceInventoryCache(getManager()));
        this.registerServiceImplementation(IServiceInstanceInventoryRegister.class, new ServiceInstanceInventoryRegister(getManager()));

        this.registerServiceImplementation(EndpointInventoryCache.class, new EndpointInventoryCache(getManager()));
        this.registerServiceImplementation(IEndpointInventoryRegister.class, new EndpointInventoryRegister(getManager()));

        this.registerServiceImplementation(NetworkAddressInventoryCache.class, new NetworkAddressInventoryCache(getManager()));
        this.registerServiceImplementation(INetworkAddressInventoryRegister.class, new NetworkAddressInventoryRegister(getManager()));

        this.registerServiceImplementation(TopologyQueryService.class, new TopologyQueryService(getManager()));
        this.registerServiceImplementation(MetricQueryService.class, new MetricQueryService(getManager()));
        this.registerServiceImplementation(TraceQueryService.class, new TraceQueryService(getManager()));
        this.registerServiceImplementation(LogQueryService.class, new LogQueryService(getManager()));
        this.registerServiceImplementation(MetadataQueryService.class, new MetadataQueryService(getManager()));
        this.registerServiceImplementation(AggregationQueryService.class, new AggregationQueryService(getManager()));
        this.registerServiceImplementation(AlarmQueryService.class, new AlarmQueryService(getManager()));
        this.registerServiceImplementation(TopNRecordsQueryService.class, new TopNRecordsQueryService(getManager()));

        annotationScan.registerListener(streamAnnotationListener);

        this.remoteClientManager = new RemoteClientManager(getManager());
        this.registerServiceImplementation(RemoteClientManager.class, remoteClientManager);

        MetricsStreamProcessor.getInstance().setEnableDatabaseSession(moduleConfig.isEnableDatabaseSession());
    }

    @Override public void start() throws ModuleStartException {
        grpcServer.addHandler(new RemoteServiceHandler(getManager()));
        grpcServer.addHandler(new HealthCheckServiceHandler());
        remoteClientManager.start();

        try {
            receiver.scan();
            annotationScan.scan();

            oalEngine.notifyAllListeners();
        } catch (IOException | IllegalAccessException | InstantiationException e) {
            throw new ModuleStartException(e.getMessage(), e);
        }
    }

    @Override public void notifyAfterCompleted() throws ModuleStartException {
        try {
            grpcServer.start();
            jettyServer.start();
        } catch (ServerException e) {
            throw new ModuleStartException(e.getMessage(), e);
        }

        if (CoreModuleConfig.Role.Mixed.name().equalsIgnoreCase(moduleConfig.getRole()) || CoreModuleConfig.Role.Aggregator.name().equalsIgnoreCase(moduleConfig.getRole())) {
            RemoteInstance gRPCServerInstance = new RemoteInstance(new Address(moduleConfig.getGRPCHost(), moduleConfig.getGRPCPort(), true));
            this.getManager().find(ClusterModule.NAME).provider().getService(ClusterRegister.class).registerRemote(gRPCServerInstance);
        }

        PersistenceTimer.INSTANCE.start(getManager(), moduleConfig);

        if (moduleConfig.isEnableDataKeeperExecutor()) {
            DataTTLKeeperTimer.INSTANCE.start(getManager());
        }

        CacheUpdateTimer.INSTANCE.start(getManager());
    }

    @Override
    public String[] requiredModules() {
        return new String[] {TelemetryModule.NAME, ConfigurationModule.NAME};
    }
}