runtime/org.argeo.slc.core/src/main/java/org/argeo/slc/core/runtime/DefaultAgent.java

   1 /*
   2  * Copyright (C) 2010 Mathieu Baudier <mbaudier@argeo.org>
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *         http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 package org.argeo.slc.core.runtime;
  18
  19 import java.net.InetAddress;
  20 import java.net.UnknownHostException;
  21 import java.util.List;
  22 import java.util.UUID;
  23
  24 import org.argeo.slc.SlcException;
  25 import org.argeo.slc.execution.ExecutionModuleDescriptor;
  26 import org.argeo.slc.execution.ExecutionModulesManager;
  27 import org.argeo.slc.process.SlcExecution;
  28 import org.argeo.slc.runtime.SlcAgent;
  29 import org.argeo.slc.runtime.SlcAgentDescriptor;
  30
  31 /** Implements the base methods of an SLC agent. */
  32 public class DefaultAgent implements SlcAgent {
  33         private SlcAgentDescriptor agentDescriptor;
  34         private ExecutionModulesManager modulesManager;
  35
  36         /*
  37          * LIFECYCLE
  38          */
  39         public void init() {
  40                 try {
  41                         agentDescriptor = new SlcAgentDescriptor();
  42                         agentDescriptor.setUuid(initAgentUuid());
  43                         agentDescriptor.setHost(InetAddress.getLocalHost().getHostName());
  44                 } catch (UnknownHostException e) {
  45                         throw new SlcException("Unable to create agent descriptor.", e);
  46                 }
  47         }
  48
  49         public void dispose() {
  50
  51         }
  52
  53         /**
  54          * Called during initialization in order to determines the agent UUID. To be
  55          * overridden. By default creates a new one per instance.
  56          */
  57         protected String initAgentUuid() {
  58                 return UUID.randomUUID().toString();
  59         }
  60
  61         /*
  62          * SLC AGENT
  63          */
  64         public void runSlcExecution(final SlcExecution slcExecution) {
  65                 modulesManager.process(slcExecution);
  66         }
  67
  68         public ExecutionModuleDescriptor getExecutionModuleDescriptor(
  69                         String moduleName, String version) {
  70                 return modulesManager.getExecutionModuleDescriptor(moduleName, version);
  71         }
  72
  73         public List<ExecutionModuleDescriptor> listExecutionModuleDescriptors() {
  74                 return modulesManager.listExecutionModules();
  75         }
  76
  77         public boolean ping() {
  78                 return true;
  79         }
  80
  81         /*
  82          * BEAN
  83          */
  84         public void setModulesManager(ExecutionModulesManager modulesManager) {
  85                 this.modulesManager = modulesManager;
  86         }
  87
  88         protected SlcAgentDescriptor getAgentDescriptor() {
  89                 return agentDescriptor;
  90         }
  91
  92         public String getAgentUuid() {
  93                 return agentDescriptor.getUuid();
  94         }
  95
  96         @Override
  97         public String toString() {
  98                 return agentDescriptor.toString();
  99         }
 100 }