org.apache.myriad.MyriadTestModule.java Source code

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Here is the source code for org.apache.myriad.MyriadTestModule.java

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/**
 * 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
 * <p/>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p/>
 * 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.myriad;

import java.io.IOException;
import java.util.Map;

import org.apache.myriad.configuration.MyriadConfiguration;
import org.apache.myriad.configuration.NodeManagerConfiguration;
import org.apache.myriad.configuration.ServiceConfiguration;
import org.apache.myriad.scheduler.ExecutorCommandLineGenerator;
import org.apache.myriad.scheduler.NMExecutorCommandLineGenerator;
import org.apache.myriad.scheduler.NMTaskFactory;
import org.apache.myriad.scheduler.ServiceTaskFactory;
import org.apache.myriad.scheduler.TaskFactory;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.dataformat.yaml.YAMLFactory;
import com.google.inject.AbstractModule;
import com.google.inject.Provides;
import com.google.inject.Scopes;
import com.google.inject.Singleton;
import com.google.inject.multibindings.MapBinder;

/**
 * AbstractModule extension for UnitTests
 */
public class MyriadTestModule extends AbstractModule {

    private static final Logger LOGGER = LoggerFactory.getLogger(MyriadTestModule.class);

    private MyriadConfiguration cfg;

    @SuppressWarnings("unchecked")
    @Override
    protected void configure() {

        ObjectMapper mapper = new ObjectMapper(new YAMLFactory());
        try {
            cfg = mapper.readValue(
                    Thread.currentThread().getContextClassLoader().getResource("myriad-config-test-default.yml"),
                    MyriadConfiguration.class);
        } catch (IOException e1) {
            LOGGER.error("IOException", e1);
            return;
        }

        if (cfg == null) {
            return;
        }

        bind(MyriadConfiguration.class).toInstance(cfg);

        MapBinder<String, TaskFactory> mapBinder = MapBinder.newMapBinder(binder(), String.class,
                TaskFactory.class);
        mapBinder.addBinding(NodeManagerConfiguration.DEFAULT_NM_TASK_PREFIX).to(NMTaskFactory.class)
                .in(Scopes.SINGLETON);
        Map<String, ServiceConfiguration> auxServicesConfigs = cfg.getServiceConfigurations();
        for (Map.Entry<String, ServiceConfiguration> entry : auxServicesConfigs.entrySet()) {
            String taskFactoryClass = entry.getValue().getTaskFactoryImplName().orNull();
            if (taskFactoryClass != null) {
                try {
                    Class<? extends TaskFactory> implClass = (Class<? extends TaskFactory>) Class
                            .forName(taskFactoryClass);
                    mapBinder.addBinding(entry.getKey()).to(implClass).in(Scopes.SINGLETON);
                } catch (ClassNotFoundException e) {
                    e.printStackTrace();
                }
            } else {
                mapBinder.addBinding(entry.getKey()).to(ServiceTaskFactory.class).in(Scopes.SINGLETON);
            }
        }
    }

    @Provides
    @Singleton
    ExecutorCommandLineGenerator providesCLIGenerator(MyriadConfiguration cfg) {
        return new NMExecutorCommandLineGenerator(cfg);
    }

}