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https://issues.apache.org/jira/browse/GOBBLIN-1444?focusedWorklogId=605377&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-605377
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ASF GitHub Bot logged work on GOBBLIN-1444:
-------------------------------------------
Author: ASF GitHub Bot
Created on: 02/Jun/21 17:25
Start Date: 02/Jun/21 17:25
Worklog Time Spent: 10m
Work Description: arjun4084346 commented on a change in pull request
#3281:
URL: https://github.com/apache/gobblin/pull/3281#discussion_r644174740
##########
File path:
gobblin-service/src/main/java/org/apache/gobblin/service/modules/core/GobblinServiceGuiceModule.java
##########
@@ -0,0 +1,253 @@
+/*
+ * 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.gobblin.service.modules.core;
+
+import java.util.Objects;
+
+import org.apache.helix.HelixManager;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import com.google.common.collect.Lists;
+import com.google.common.eventbus.EventBus;
+import com.google.inject.Binder;
+import com.google.inject.Inject;
+import com.google.inject.Injector;
+import com.google.inject.Module;
+import com.google.inject.Provider;
+import com.google.inject.multibindings.OptionalBinder;
+import com.google.inject.name.Names;
+import com.typesafe.config.Config;
+
+import javax.inject.Singleton;
+
+import org.apache.gobblin.restli.EmbeddedRestliServer;
+import org.apache.gobblin.runtime.api.GobblinInstanceEnvironment;
+import org.apache.gobblin.runtime.instance.StandardGobblinInstanceLauncher;
+import org.apache.gobblin.runtime.spec_catalog.FlowCatalog;
+import org.apache.gobblin.runtime.spec_catalog.TopologyCatalog;
+import org.apache.gobblin.scheduler.SchedulerService;
+import org.apache.gobblin.service.FlowConfigResourceLocalHandler;
+import org.apache.gobblin.service.FlowConfigV2ResourceLocalHandler;
+import org.apache.gobblin.service.FlowConfigsResource;
+import org.apache.gobblin.service.FlowConfigsResourceHandler;
+import org.apache.gobblin.service.FlowConfigsV2Resource;
+import org.apache.gobblin.service.FlowConfigsV2ResourceHandler;
+import org.apache.gobblin.service.FlowExecutionResource;
+import org.apache.gobblin.service.FlowExecutionResourceHandler;
+import org.apache.gobblin.service.FlowExecutionResourceLocalHandler;
+import org.apache.gobblin.service.FlowStatusResource;
+import org.apache.gobblin.service.GroupOwnershipService;
+import org.apache.gobblin.service.NoopRequesterService;
+import org.apache.gobblin.service.RequesterService;
+import org.apache.gobblin.service.ServiceConfigKeys;
+import org.apache.gobblin.service.modules.orchestration.DagManager;
+import org.apache.gobblin.service.modules.orchestration.Orchestrator;
+import
org.apache.gobblin.service.modules.restli.GobblinServiceFlowConfigResourceHandler;
+import
org.apache.gobblin.service.modules.restli.GobblinServiceFlowConfigV2ResourceHandler;
+import
org.apache.gobblin.service.modules.restli.GobblinServiceFlowExecutionResourceHandler;
+import org.apache.gobblin.service.modules.scheduler.GobblinServiceJobScheduler;
+import org.apache.gobblin.service.modules.topology.TopologySpecFactory;
+import org.apache.gobblin.service.modules.utils.HelixUtils;
+import org.apache.gobblin.service.modules.utils.InjectionNames;
+import org.apache.gobblin.service.monitoring.FlowStatusGenerator;
+import org.apache.gobblin.service.monitoring.FsJobStatusRetriever;
+import org.apache.gobblin.service.monitoring.JobStatusRetriever;
+import org.apache.gobblin.service.monitoring.KafkaJobStatusMonitor;
+import org.apache.gobblin.service.monitoring.KafkaJobStatusMonitorFactory;
+import org.apache.gobblin.util.ClassAliasResolver;
+import org.apache.gobblin.util.ConfigUtils;
+
+
+public class GobblinServiceGuiceModule implements Module {
+ private static final Logger LOGGER =
LoggerFactory.getLogger(GobblinServiceGuiceModule.class);
+ private static final String JOB_STATUS_RETRIEVER_CLASS_KEY =
"jobStatusRetriever.class";
+
+ GobblinServiceConfiguration serviceConfig;
+
+ public GobblinServiceGuiceModule(GobblinServiceConfiguration serviceConfig) {
+ this.serviceConfig = Objects.requireNonNull(serviceConfig);
+ }
+
+ @Override
+ public void configure(Binder binder) {
+ LOGGER.info("Configuring bindings for the following service settings: {}",
serviceConfig);
+
+ // In the current code base, we frequently inject classes instead of
interfaces
+ // As a result, even when the binding is missing, Guice will create an
instance of the
+ // the class and inject it. This interferes with disabling of different
services and
+ // components, because without explicit bindings they will get
instantiated anyway.
+ binder.requireExplicitBindings();
+
+ // Optional binder will find the existing binding for T and create
additional binding for Optional<T>.
+ // If none of the specific class binding exist, optional will be "absent".
+ OptionalBinder.newOptionalBinder(binder, Logger.class);
+
+
binder.bind(Logger.class).toInstance(LoggerFactory.getLogger(GobblinServiceManager.class));
+
+ binder.bind(Config.class).toInstance(serviceConfig.getInnerConfig());
+
+ binder.bind(GobblinServiceConfiguration.class).toInstance(serviceConfig);
+
+ // Used by TopologyCatalog and FlowCatalog
+ GobblinInstanceEnvironment gobblinInstanceEnvironment =
StandardGobblinInstanceLauncher.builder()
+ .withLog(LoggerFactory.getLogger(GobblinServiceManager.class))
+ .setInstrumentationEnabled(true)
+ .withSysConfig(serviceConfig.getInnerConfig())
+ .build();
+
+
binder.bind(GobblinInstanceEnvironment.class).toInstance(gobblinInstanceEnvironment);
+
+ binder.bind(EventBus.class)
+
.annotatedWith(Names.named(GobblinServiceManager.SERVICE_EVENT_BUS_NAME))
+ .toInstance(new EventBus(GobblinServiceManager.class.getSimpleName()));
+
+
binder.bindConstant().annotatedWith(Names.named(InjectionNames.SERVICE_NAME)).to(serviceConfig.getServiceName());
+
+ binder.bindConstant()
+ .annotatedWith(Names.named(InjectionNames.FORCE_LEADER))
+ .to(ConfigUtils.getBoolean(serviceConfig.getInnerConfig(),
ServiceConfigKeys.FORCE_LEADER,
+ ServiceConfigKeys.DEFAULT_FORCE_LEADER));
+
+ binder.bindConstant()
+ .annotatedWith(Names.named(InjectionNames.FLOW_CATALOG_LOCAL_COMMIT))
+ .to(serviceConfig.getServiceName());
+
+
binder.bind(FlowConfigsResourceHandler.class).to(GobblinServiceFlowConfigResourceHandler.class);
+
binder.bind(FlowConfigsV2ResourceHandler.class).to(GobblinServiceFlowConfigV2ResourceHandler.class);
+
binder.bind(FlowExecutionResourceHandler.class).to(GobblinServiceFlowExecutionResourceHandler.class);
+
+
+ binder.bind(FlowConfigsResource.class);
+ binder.bind(FlowConfigsV2Resource.class);
+ binder.bind(FlowStatusResource.class);
+ binder.bind(FlowExecutionResource.class);
+
+ binder.bind(FlowConfigResourceLocalHandler.class);
+ binder.bind(FlowConfigV2ResourceLocalHandler.class);
+ binder.bind(FlowExecutionResourceLocalHandler.class);
+
+
binder.bindConstant().annotatedWith(Names.named(FlowConfigsResource.INJECT_READY_TO_USE)).to(Boolean.TRUE);
+
binder.bindConstant().annotatedWith(Names.named(FlowConfigsV2Resource.INJECT_READY_TO_USE)).to(Boolean.TRUE);
+ binder.bind(RequesterService.class)
+ .to(NoopRequesterService.class);
+
+ OptionalBinder.newOptionalBinder(binder, TopologyCatalog.class);
+ if (serviceConfig.isTopologyCatalogEnabled()) {
+ binder.bind(TopologyCatalog.class);
+ }
+
+ if (serviceConfig.isTopologySpecFactoryEnabled()) {
+ binder.bind(TopologySpecFactory.class)
+ .to(getClassByNameOrAlias(TopologySpecFactory.class,
serviceConfig.getInnerConfig(),
+ ServiceConfigKeys.TOPOLOGYSPEC_FACTORY_KEY,
ServiceConfigKeys.DEFAULT_TOPOLOGY_SPEC_FACTORY));
+ }
+
+ OptionalBinder.newOptionalBinder(binder, DagManager.class);
+ if (serviceConfig.isDagManagerEnabled()) {
+ binder.bind(DagManager.class);
+ }
+
+ OptionalBinder.newOptionalBinder(binder, HelixManager.class);
+ if (serviceConfig.isHelixManagerEnabled()) {
+ binder.bind(HelixManager.class)
+ .toInstance(buildHelixManager(serviceConfig.getInnerConfig(),
+
serviceConfig.getInnerConfig().getString(ServiceConfigKeys.ZK_CONNECTION_STRING_KEY)));
+ } else {
+ LOGGER.info("No ZooKeeper connection string. Running in single instance
mode.");
+ }
+
+ OptionalBinder.newOptionalBinder(binder, FlowCatalog.class);
+ if (serviceConfig.isFlowCatalogEnabled()) {
+ binder.bind(FlowCatalog.class);
+ }
+
+ if (serviceConfig.isJobStatusMonitorEnabled()) {
+
binder.bind(KafkaJobStatusMonitor.class).toProvider(KafkaJobStatusMonitorFactory.class).in(Singleton.class);
+ }
+
+ binder.bind(FlowStatusGenerator.class);
+
+ if (serviceConfig.isSchedulerEnabled()) {
+ binder.bind(Orchestrator.class);
+ binder.bind(SchedulerService.class);
+ binder.bind(GobblinServiceJobScheduler.class);
+ }
+
+ if (serviceConfig.isGitConfigMonitorEnabled()) {
+ binder.bind(GitConfigMonitor.class);
+ }
+
+ binder.bind(GroupOwnershipService.class)
+ .to(getClassByNameOrAlias(GroupOwnershipService.class,
serviceConfig.getInnerConfig(),
+ ServiceConfigKeys.GROUP_OWNERSHIP_SERVICE_CLASS,
ServiceConfigKeys.DEFAULT_GROUP_OWNERSHIP_SERVICE));
+
+ binder.bind(JobStatusRetriever.class)
+ .to(getClassByNameOrAlias(JobStatusRetriever.class,
serviceConfig.getInnerConfig(),
+ JOB_STATUS_RETRIEVER_CLASS_KEY,
FsJobStatusRetriever.class.getName()));
+
+ if (serviceConfig.isRestLIServerEnabled()) {
+
binder.bind(EmbeddedRestliServer.class).toProvider(EmbeddedRestliServerProvider.class).in(Singleton.class);
+ }
+
+ binder.bind(GobblinServiceManager.class);
+
+ LOGGER.info("Bindings configured");
+ }
+
+ protected HelixManager buildHelixManager(Config config, String
zkConnectionString) {
+ String helixClusterName =
config.getString(ServiceConfigKeys.HELIX_CLUSTER_NAME_KEY);
+ String helixInstanceName = HelixUtils.buildHelixInstanceName(config,
GobblinServiceManager.class.getSimpleName());
+
+ LOGGER.info(
+ "Creating Helix cluster if not already present [overwrite = false]: "
+ zkConnectionString);
+ HelixUtils.createGobblinHelixCluster(zkConnectionString, helixClusterName,
false);
+
+ return HelixUtils.buildHelixManager(helixInstanceName, helixClusterName,
zkConnectionString);
+ }
+
+ protected static <T> Class<? extends T> getClassByNameOrAlias(Class<T>
baseClass, Config config,
Review comment:
Should this method be moved to GobblinConstructorUtils ?
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Issue Time Tracking
-------------------
Worklog Id: (was: 605377)
Time Spent: 3h 10m (was: 3h)
> Use Guice as DI framework in Gobblin service
> --------------------------------------------
>
> Key: GOBBLIN-1444
> URL: https://issues.apache.org/jira/browse/GOBBLIN-1444
> Project: Apache Gobblin
> Issue Type: Improvement
> Components: gobblin-service
> Reporter: Alex Prokofiev
> Assignee: Abhishek Tiwari
> Priority: Major
> Time Spent: 3h 10m
> Remaining Estimate: 0h
>
> Currently, to initialize Gobblin service, we used a mixture of dependency
> injection, direct class creation and config-based class creation. In this
> change, we unify the service initialization by moving towards using
> dependency injection(DI) with Guice everywhere.
> Using DI will help with (1) unit testing; (2) overriding classes in the
> middle of the dependency with company-specific implementations, and (3) will
> improve code readability, as dependencies between classes become visible from
> the outside and explicit.
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