/*
 * Copyright 2013 The Regents of The University California
 * 
 * Licensed 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 edu.berkeley.sparrow.daemon.util;

import java.net.InetSocketAddress;
import java.util.HashSet;
import java.util.Set;

import org.apache.commons.configuration.Configuration;
import org.apache.log4j.Logger;

import com.google.common.base.Optional;

import edu.berkeley.sparrow.daemon.SparrowConf;
import edu.berkeley.sparrow.thrift.TResourceVector;

/**
 * Utilities to aid the configuration file-based scheduler and node monitor.
 */
public class ConfigUtil {
  private final static Logger LOG = Logger.getLogger(ConfigUtil.class);

  /**
   * Parses the list of backends from a {@link Configuration}.
   *
   * Returns a map of address of backends to a {@link TResourceVector} describing the
   * total resource capacity for that backend.
   */
  public static Set<InetSocketAddress> parseBackends(
      Configuration conf) {
    if (!conf.containsKey(SparrowConf.STATIC_NODE_MONITORS)) {
      throw new RuntimeException("Missing configuration node monitor list");
    }

    Set<InetSocketAddress> backends = new HashSet<InetSocketAddress>();

    for (String node: conf.getStringArray(SparrowConf.STATIC_NODE_MONITORS)) {
      Optional<InetSocketAddress> addr = Serialization.strToSocket(node);
      if (!addr.isPresent()) {
        LOG.warn("Bad backend address: " + node);
        continue;
      }
      backends.add(addr.get());
    }

    return backends;
  }
}

@@ -1750,24 +1750,71 @@
 ONITORS)) %7B%0A
+      System.out.println(%22%5BWDM%5D node: %22+node);%0A
       Option
@@ -1982,16 +1982,81 @@
       %7D%0A
+      System.out.println(%22%5BWDM%5D after conversion: %22+addr.get());%0A
       ba

check backend address