lang/java/reef-bridge-java/src/main/java/org/apache/reef/javabridge/ClosedContextBridge.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.reef.javabridge;

import org.apache.reef.annotations.audience.Interop;
import org.apache.reef.annotations.audience.Private;
import org.apache.reef.driver.context.ActiveContext;
import org.apache.reef.driver.context.ClosedContext;
import org.apache.reef.driver.evaluator.EvaluatorDescriptor;
import org.apache.reef.util.Optional;

import java.util.logging.Level;
import java.util.logging.Logger;

/**
 * The Java-CLR bridge object for {@link org.apache.reef.driver.context.ClosedContext}.
 */
@Private
@Interop(
    CppFiles = { "Clr2JavaImpl.h", "ClosedContextClr2Java.cpp" },
    CsFiles = { "IClosedContextClr2Java.cs", "ClosedContext.cs" })
public final class ClosedContextBridge extends NativeBridge implements ClosedContext {

  private static final Logger LOG = Logger.getLogger(ClosedContextBridge.class.getName());

  private final ClosedContext jcloseContext;
  private final ActiveContextBridge parentContext;
  private final String contextId;
  private final String evaluatorId;
  private final EvaluatorDescriptor evaluatorDescriptor;

  public ClosedContextBridge(final ClosedContext closedContext,
                             final ActiveContextBridgeFactory activeContextBridgeFactory) {
    jcloseContext = closedContext;
    if (closedContext.getParentContext() != null) {
      parentContext = activeContextBridgeFactory.getActiveContextBridge(closedContext.getParentContext());
    } else {
      parentContext = null;
    }

    contextId = closedContext.getId();
    evaluatorId = closedContext.getEvaluatorId();
    evaluatorDescriptor = closedContext.getEvaluatorDescriptor();
  }

  @Override
  public String getId() {
    return contextId;
  }

  @Override
  public String getEvaluatorId() {
    return evaluatorId;
  }

  @Override
  public Optional<String> getParentId() {
    return Optional.of(parentContext.getId());
  }

  @Override
  public EvaluatorDescriptor getEvaluatorDescriptor() {
    return evaluatorDescriptor;
  }

  @Override
  public void close() throws Exception {
  }

  public String getEvaluatorDescriptorString() {
    final String descriptorString = Utilities.getEvaluatorDescriptorString(evaluatorDescriptor);
    LOG.log(Level.INFO, "Closed Context - serialized evaluator descriptor: " + descriptorString);
    return descriptorString;
  }

  public ActiveContextBridge getParentContextBridge() {
    return parentContext;
  }

  @Override
  public ActiveContext getParentContext() {
    return jcloseContext.getParentContext();
  }
}