| /** |
| * 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.ambari.server.agent; |
| |
| import com.google.inject.Singleton; |
| import org.apache.commons.lang.StringUtils; |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| |
| /** |
| * Captures various agent requests that it sends as part of requests |
| */ |
| |
| @Singleton |
| public class AgentRequests { |
| private static Log LOG = LogFactory.getLog(HeartbeatMonitor.class); |
| private final Map<String, Map<String, Boolean>> requiresExecCmdDetails = new HashMap<String, Map<String, Boolean>>(); |
| private final Object _lock = new Object(); |
| |
| /** |
| * Creates a holder for agent requests |
| */ |
| public AgentRequests() { |
| } |
| |
| public void setExecutionDetailsRequest(String host, String component, String requestExecutionCmd) { |
| if (StringUtils.isNotBlank(requestExecutionCmd)) { |
| LOG.debug("Setting need for exec command to " + requestExecutionCmd + " for " + component); |
| Map<String, Boolean> perHostRequiresExecCmdDetails = getPerHostRequiresExecCmdDetails(host); |
| if (Boolean.TRUE.toString().toUpperCase().equals(requestExecutionCmd.toUpperCase())) { |
| perHostRequiresExecCmdDetails.put(component, Boolean.TRUE); |
| } else { |
| perHostRequiresExecCmdDetails.put(component, Boolean.FALSE); |
| } |
| } |
| } |
| |
| public Boolean shouldSendExecutionDetails(String host, String component) { |
| |
| Map<String, Boolean> perHostRequiresExecCmdDetails = getPerHostRequiresExecCmdDetails(host); |
| if (perHostRequiresExecCmdDetails != null && perHostRequiresExecCmdDetails.containsKey(component)) { |
| LOG.debug("Sending exec command details for " + component); |
| return perHostRequiresExecCmdDetails.get(component); |
| } |
| |
| return Boolean.FALSE; |
| } |
| |
| private Map<String, Boolean> getPerHostRequiresExecCmdDetails(String host) { |
| if (!requiresExecCmdDetails.containsKey(host)) { |
| synchronized (_lock) { |
| if (!requiresExecCmdDetails.containsKey(host)) { |
| requiresExecCmdDetails.put(host, new HashMap<String, Boolean>()); |
| } |
| } |
| } |
| |
| return requiresExecCmdDetails.get(host); |
| } |
| |
| @Override |
| public String toString() { |
| return new StringBuilder().append("requiresExecCmdDetails: ").append(requiresExecCmdDetails.toString()).toString(); |
| } |
| } |