/**
* Licensed to Cloudera, Inc. under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. Cloudera, Inc. 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 com.cloudera.flume.agent;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import com.cloudera.flume.conf.FlumeConfigData;
import com.cloudera.flume.handlers.endtoend.AckListener;
import com.cloudera.flume.handlers.endtoend.CollectorAckListener;
import com.cloudera.flume.master.FlumeMaster;
import com.cloudera.flume.reporter.ReportEvent;
import com.cloudera.util.NetUtils;
/**
* This is a MasterRPC interface that actually just hooks into a Master
* directly.
*
* TODO (jon) Replace MockMaster with this.
*/
public class DirectMasterRPC implements MasterRPC {
FlumeMaster master;
String physicalNode;
/**
* This constructor builds a direct connector to the master as if it was a
* physical node with name physicalName.
*/
public DirectMasterRPC(FlumeMaster master, String physicalName) {
this.master = master;
this.physicalNode = physicalName;
}
public DirectMasterRPC(FlumeMaster master) {
this(master, NetUtils.localhost());
}
@Override
public void acknowledge(String group) throws IOException {
master.getAckMan().acknowledge(group);
}
@Override
public boolean checkAck(String ackid) throws IOException {
return master.getAckMan().check(ackid);
}
public void open() throws IOException {
}
@Override
public void close() {
// Do nohting.
}
// TODO (jon) not sure this belongs here.
@Override
public AckListener createAckListener() {
return new CollectorAckListener(this);
}
@Override
public FlumeConfigData getConfig(String n) throws IOException {
return master.getSpecMan().getConfig(n);
}
@Override
public List<String> getLogicalNodes(String physNode) throws IOException {
return new ArrayList<String>(master.getSpecMan().getLogicalNode(physNode));
}
@Override
public boolean heartbeat(LogicalNode n) throws IOException {
// TODO (jon) this is copy and pasted from MasterClientServer. this should
// be refactored to share the code.
String logicalNode = n.getName();
long version = n.getConfigVersion();
// sanity check with physicalnode.
List<String> lns = master.getSpecMan().getLogicalNode(physicalNode);
if (lns == null || !lns.contains(logicalNode)) {
if (physicalNode.equals(logicalNode)) {
// auto add a default logical node if there are no logical nodes for a
// physical node.
master.getSpecMan().addLogicalNode(physicalNode, logicalNode);
}
// LOG.warn("Recieved heartbeat from node '" + physicalNode + "/"
// + logicalNode + "' that is not be set by master ");
}
boolean configChanged = master.getStatMan().updateHeartbeatStatus(
NetUtils.localhost(), n.getStatus().physicalNode, logicalNode,
n.getStatus().state, version);
FlumeConfigData cfg = master.getSpecMan().getConfig(logicalNode);
if (cfg == null || version < cfg.getTimestamp()) {
configChanged = true;
// version sent by node is older than current, return true to force
// config
// upgrade
}
return configChanged;
}
/**
* Creates a reportable for each ReportEvent and adds it to the global
* ReportManager
*/
@Override
public void putReports(Map<String, ReportEvent> reports) throws IOException {
// Don't do anything. This call is for moving reports from a FlumeNode to
// the master. But if they are using DirectMasterRPC then they're sharing
// the same ReportManager and you don't want to overwrite existing
// reportables.
}
@Override
public HashMap<String, Integer> getChokeMap(String physNode)
throws IOException {
return new HashMap<String, Integer>(master.getSpecMan().getChokeMap(
physNode));
}
}