ActiveMQResourceAdapter xref

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    1   /***
    2    *
    3    * Copyright 2004 Hiram Chirino
    4    *
    5    * Licensed under the Apache License, Version 2.0 (the "License");
    6    * you may not use this file except in compliance with the License.
    7    * You may obtain a copy of the License at
    8    *
    9    * http://www.apache.org/licenses/LICENSE-2.0
    10   *
    11   * Unless required by applicable law or agreed to in writing, software
    12   * distributed under the License is distributed on an "AS IS" BASIS,
    13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    14   * See the License for the specific language governing permissions and
    15   * limitations under the License.
    16   *
    17   **/
    18  package org.codehaus.activemq.ra;
    19
    20  import java.util.HashMap;
    21
    22  import javax.jms.Connection;
    23  import javax.jms.ConnectionFactory;
    24  import javax.jms.JMSException;
    25  import javax.jms.XAConnection;
    26  import javax.jms.XASession;
    27  import javax.resource.NotSupportedException;
    28  import javax.resource.ResourceException;
    29  import javax.resource.spi.ActivationSpec;
    30  import javax.resource.spi.BootstrapContext;
    31  import javax.resource.spi.ResourceAdapter;
    32  import javax.resource.spi.ResourceAdapterInternalException;
    33  import javax.resource.spi.endpoint.MessageEndpointFactory;
    34  import javax.transaction.xa.XAResource;
    35
    36  import org.apache.commons.logging.Log;
    37  import org.apache.commons.logging.LogFactory;
    38  import org.codehaus.activemq.ActiveMQXAConnectionFactory;
    39
    40
    41  /***
    42   * Knows how to connect to one ActiveMQ server.  It can then activate endpoints and deliver
    43   * messages to those enpoints using the connection configure in the resource adapter.
    44   *
    45   * @version $Revision: 1.11 $
    46   */
    47  public class ActiveMQResourceAdapter implements ResourceAdapter {
    48      private static final Log log = LogFactory.getLog(ActiveMQResourceAdapter.class);
    49
    50      private static final String ASF_ENDPOINT_WORKER_TYPE="asf";
    51      private static final String POLLING_ENDPOINT_WORKER_TYPE="polling";
    52
    53      private BootstrapContext bootstrapContext;
    54      private HashMap endpointWorkers = new HashMap();
    55      final private ActiveMQConnectionRequestInfo info = new ActiveMQConnectionRequestInfo();
    56      private String endpointWorkerType=POLLING_ENDPOINT_WORKER_TYPE;
    57      private Connection physicalConnection;
    58      private ConnectionFactory connectionFactory;
    59
    60      public ActiveMQResourceAdapter() {
    61          this(null);
    62      }
    63
    64      public ActiveMQResourceAdapter(ConnectionFactory connectionFactory) {
    65          this.connectionFactory = connectionFactory;
    66      }
    67
    68      /***
    69       * @see javax.resource.spi.ResourceAdapter#start(javax.resource.spi.BootstrapContext)
    70       */
    71      public void start(BootstrapContext bootstrapContext)
    72              throws ResourceAdapterInternalException {
    73          this.bootstrapContext = bootstrapContext;
    74
    75          try {
    76              physicalConnection = makeConnection(connectionFactory, info);
    77              physicalConnection.start();
    78          }
    79          catch (JMSException e) {
    80              throw new ResourceAdapterInternalException("Could not establish a connection to the server.", e);
    81          }
    82
    83      }
    84
    85      /***
    86       * A helper method to create a new JMS connection from the connection request info.
    87       * If no specific connection factory instance is passed in then the default ActiveMQ
    88       * implementation is used
    89       *
    90       * @param connectionFactory an optional connection factory to use or null to use the default
    91       * @param info              the connection request info
    92       * @return a newly created connection
    93       * @throws JMSException
    94       */
    95      public static Connection makeConnection(ConnectionFactory connectionFactory, ActiveMQConnectionRequestInfo info) throws JMSException {
    96          if (connectionFactory == null) {
    97              if (info.isXa()) {
    98                  connectionFactory = new ActiveMQXAConnectionFactory(info.getServerUrl());
    99              }
    100             else {
    101                 connectionFactory = new org.codehaus.activemq.ActiveMQConnectionFactory(info.getServerUrl());
    102             }
    103         }
    104         Connection physicalConnection = connectionFactory.createConnection(info.getUserName(), info.getPassword());
    105         if (info.getClientid() != null) {
    106             physicalConnection.setClientID(info.getClientid());
    107         }
    108         return physicalConnection;
    109     }
    110
    111     /***
    112      * @return Returns the physicalConnection.
    113      */
    114     public Connection getPhysicalConnection() {
    115         return physicalConnection;
    116     }
    117
    118     /***
    119      * @see javax.resource.spi.ResourceAdapter#stop()
    120      */
    121     public void stop() {
    122         this.bootstrapContext = null;
    123         if (physicalConnection != null) {
    124             try {
    125                 physicalConnection.close();
    126                 physicalConnection = null;
    127             }
    128             catch (JMSException e) {
    129                 log.debug("Error occured during ResourceAdapter stop: ", e);
    130             }
    131         }
    132     }
    133
    134     /***
    135      * @return
    136      */
    137     public BootstrapContext getBootstrapContext() {
    138         return bootstrapContext;
    139     }
    140
    141     /***
    142      * @see javax.resource.spi.ResourceAdapter#endpointActivation(javax.resource.spi.endpoint.MessageEndpointFactory,
    143             *      javax.resource.spi.ActivationSpec)
    144      */
    145     public void endpointActivation(MessageEndpointFactory endpointFactory,
    146                                    ActivationSpec activationSpec) throws ResourceException {
    147
    148         //spec section 5.3.3
    149         if (activationSpec.getResourceAdapter() != this) {
    150             throw new ResourceException("Activation spec not initialized with this ResourceAdapter instance");
    151         }
    152
    153         if (activationSpec.getClass().equals(ActiveMQActivationSpec.class)) {
    154
    155             ActiveMQEndpointActivationKey key = new ActiveMQEndpointActivationKey(endpointFactory, (ActiveMQActivationSpec) activationSpec);
    156             // This is weird.. the same endpoint activated twice.. must be a container error.
    157             if (endpointWorkers.containsKey(key)) {
    158                 throw new IllegalStateException("Endpoint previously activated");
    159             }
    160
    161             ActiveMQBaseEndpointWorker worker;
    162             if( POLLING_ENDPOINT_WORKER_TYPE.equals(getEndpointWorkerType())) {
    163             	worker = new ActiveMQPollingEndpointWorker(this, key);
    164             } else if( ASF_ENDPOINT_WORKER_TYPE.equals(getEndpointWorkerType())) {
    165             	worker = new ActiveMQAsfEndpointWorker(this, key);
    166             } else {
    167                 throw new NotSupportedException("That type of EndpointWorkerType is not supported: " + getEndpointWorkerType());
    168             }
    169
    170             endpointWorkers.put(key, worker);
    171             worker.start();
    172
    173         }
    174         else {
    175             throw new NotSupportedException("That type of ActicationSpec not supported: " + activationSpec.getClass());
    176         }
    177
    178     }
    179
    180     /***
    181      * @see javax.resource.spi.ResourceAdapter#endpointDeactivation(javax.resource.spi.endpoint.MessageEndpointFactory,
    182             *      javax.resource.spi.ActivationSpec)
    183      */
    184     public void endpointDeactivation(MessageEndpointFactory endpointFactory,
    185                                      ActivationSpec activationSpec) {
    186
    187         if (activationSpec.getClass().equals(ActiveMQActivationSpec.class)) {
    188             ActiveMQEndpointActivationKey key = new ActiveMQEndpointActivationKey(endpointFactory, (ActiveMQActivationSpec) activationSpec);
    189             ActiveMQBaseEndpointWorker worker = (ActiveMQBaseEndpointWorker) endpointWorkers.get(key);
    190             if (worker == null) {
    191                 // This is weird.. that endpoint was not activated..  oh well.. this method
    192                 // does not throw exceptions so just return.
    193                 return;
    194             }
    195             try {
    196                 worker.stop();
    197             }
    198             catch (InterruptedException e) {
    199                 // We interrupted.. we won't throw an exception but will stop waiting for the worker
    200                 // to stop..  we tried our best.  Keep trying to interrupt the thread.
    201                 Thread.currentThread().interrupt();
    202             }
    203
    204         }
    205
    206     }
    207
    208     /***
    209      * We only connect to one resource manager per ResourceAdapter instance, so any ActivationSpec
    210      * will return the same XAResource.
    211      * @see javax.resource.spi.ResourceAdapter#getXAResources(javax.resource.spi.ActivationSpec[])
    212      */
    213     public XAResource[] getXAResources(ActivationSpec[] activationSpecs) throws ResourceException {
    214         try {
    215             Connection connection = getPhysicalConnection();
    216             if (connection instanceof XAConnection) {
    217                 XASession session = ((XAConnection)connection).createXASession();
    218                 XAResource xaResource = session.getXAResource();
    219                 return new XAResource[] {xaResource};
    220             } else {
    221                 return new XAResource[] {};
    222             }
    223         } catch (JMSException e) {
    224             throw new ResourceException(e);
    225         }
    226     }
    227
    228     /////////////////////////////////////////////////////////////////////////
    229     //
    230     // Java Bean getters and setters for this ResourceAdapter class.
    231     //
    232     /////////////////////////////////////////////////////////////////////////
    233
    234     /***
    235      * @return
    236      */
    237     public String getClientid() {
    238         return info.getClientid();
    239     }
    240
    241     /***
    242      * @return
    243      */
    244     public String getPassword() {
    245         return info.getPassword();
    246     }
    247
    248     /***
    249      * @return
    250      */
    251     public String getServerUrl() {
    252         return info.getServerUrl();
    253     }
    254
    255     /***
    256      * @return
    257      */
    258     public String getUserName() {
    259         return info.getUserName();
    260     }
    261
    262     /***
    263      * @param clientid
    264      */
    265     public void setClientid(String clientid) {
    266         info.setClientid(clientid);
    267     }
    268
    269     /***
    270      * @param password
    271      */
    272     public void setPassword(String password) {
    273         info.setPassword(password);
    274     }
    275
    276     /***
    277      * @param url
    278      */
    279     public void setServerUrl(String url) {
    280         info.setServerUrl(url);
    281     }
    282
    283     /***
    284      * @param userid
    285      */
    286     public void setUserName(String userid) {
    287         info.setUserName(userid);
    288     }
    289
    290     public Boolean isXA() {
    291         return Boolean.valueOf(info.isXa());
    292     }
    293
    294     public void setXA(Boolean xa) {
    295         info.setXa(xa.booleanValue());
    296     }
    297
    298 	/***
    299 	 * @return Returns the endpointWorkerType.
    300 	 */
    301 	public String getEndpointWorkerType() {
    302 		return endpointWorkerType;
    303 	}
    304 	/***
    305 	 * @param endpointWorkerType The endpointWorkerType to set.
    306 	 */
    307 	public void setEndpointWorkerType(String endpointWorkerType) {
    308 		this.endpointWorkerType = endpointWorkerType;
    309 	}
    310
    311 	/***
    312 	 * @return Returns the info.
    313 	 */
    314 	public ActiveMQConnectionRequestInfo getInfo() {
    315 		return info;
    316 	}
    317 }