Source code

001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *   http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing,
013 * software distributed under the License is distributed on an
014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015 * KIND, either express or implied.  See the License for the
016 * specific language governing permissions and limitations
017 * under the License.
018 */
019package org.apache.reef.javabridge;
020
021import org.apache.reef.annotations.audience.Interop;
022import org.apache.reef.annotations.audience.Private;
023import org.apache.reef.driver.evaluator.EvaluatorDescriptor;
024import org.apache.reef.tang.ClassHierarchy;
025import org.apache.reef.tang.implementation.protobuf.ProtocolBufferClassHierarchy;
026import org.apache.reef.tang.proto.ClassHierarchyProto;
027
028import java.io.FileInputStream;
029import java.io.IOException;
030import java.io.InputStream;
031import java.net.InetSocketAddress;
032import java.nio.file.Files;
033import java.nio.file.Path;
034import java.nio.file.Paths;
035
036/**
037 * CLR/Java bridge utilities.
038 */
039@Private
040@Interop
041public final class Utilities {
042  public static ClassHierarchy loadClassHierarchy(final String classHierarchyFile) {
043    // TODO[JIRA REEF-400] The file should be created via AvroClassHierarchySerializer
044    Path p = Paths.get(classHierarchyFile);
045    if (!Files.exists(p)) {
046      p = Paths.get(System.getProperty("user.dir") + "/reef/global/" + classHierarchyFile);
047    }
048    if (!Files.exists(p)) {
049      throw new RuntimeException("cannot find file " + p.toAbsolutePath());
050    }
051    // TODO[JIRA REEF-400] Use the AvroClassHierarchySerializer in place of protobuf
052    try (final InputStream chin = new FileInputStream(p.toAbsolutePath().toString())) {
053      final ClassHierarchyProto.Node root = ClassHierarchyProto.Node.parseFrom(chin);
054      final ClassHierarchy ch = new ProtocolBufferClassHierarchy(root);
055      return ch;
056    } catch (final IOException e) {
057      final String message = "Unable to load class hierarchy from " + classHierarchyFile;
058      throw new RuntimeException(message, e);
059    }
060  }
061
062  public static String getEvaluatorDescriptorString(final EvaluatorDescriptor evaluatorDescriptor) {
063    final InetSocketAddress socketAddress = evaluatorDescriptor.getNodeDescriptor().getInetSocketAddress();
064    return "IP=" + socketAddress.getAddress() + ", Port=" + socketAddress.getPort() + ", HostName=" +
065        socketAddress.getHostName() + ", Memory=" + evaluatorDescriptor.getMemory() + ", Core=" +
066        evaluatorDescriptor.getNumberOfCores() + ", RuntimeName=" + evaluatorDescriptor.getRuntimeName();
067  }
068
069  /**
070   * Empty private constructor to prohibit instantiation of utility class.
071   */
072  private Utilities() {
073  }
074}