/*
* 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.synapse.deployers;
import org.apache.axiom.om.OMElement;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.synapse.Mediator;
import org.apache.synapse.SynapseConstants;
import org.apache.synapse.config.xml.MediatorFactoryFinder;
import org.apache.synapse.config.xml.MediatorSerializerFinder;
import org.apache.synapse.config.xml.MultiXMLConfigurationBuilder;
import org.apache.synapse.mediators.base.SequenceMediator;
import java.io.File;
import java.util.Properties;
/**
* Handles the <code>Sequence</code> deployment and undeployment tasks
*
* @see org.apache.synapse.deployers.AbstractSynapseArtifactDeployer
*/
public class SequenceDeployer extends AbstractSynapseArtifactDeployer {
private static Log log = LogFactory.getLog(SequenceDeployer.class);
@Override
public String deploySynapseArtifact(OMElement artifactConfig, String fileName,
Properties properties) {
if (log.isDebugEnabled()) {
log.debug("Sequence Deployment from file : " + fileName + " : Started");
}
try {
Mediator m = MediatorFactoryFinder.getInstance().getMediator(
artifactConfig, properties);
if (m instanceof SequenceMediator) {
SequenceMediator seq = (SequenceMediator) m;
seq.setFileName((new File(fileName)).getName());
if (log.isDebugEnabled()) {
log.debug("Sequence named '" + seq.getName()
+ "' has been built from the file " + fileName);
}
seq.init(getSynapseEnvironment());
if (log.isDebugEnabled()) {
log.debug("Initialized the sequence : " + seq.getName());
}
getSynapseConfiguration().addSequence(seq.getName(), seq);
if (log.isDebugEnabled()) {
log.debug("Sequence Deployment from file : " + fileName + " : Completed");
}
log.info("Sequence named '" + seq.getName()
+ "' has been deployed from file : " + fileName);
return seq.getName();
} else {
handleSynapseArtifactDeploymentError("Sequence Deployment Failed. " +
"The artifact described in the file " + fileName + " is not a Sequence");
}
} catch (Exception e) {
handleSynapseArtifactDeploymentError(
"Sequence Deployment from the file : " + fileName + " : Failed.", e);
}
return null;
}
@Override
public String updateSynapseArtifact(OMElement artifactConfig, String fileName,
String existingArtifactName, Properties properties) {
if (log.isDebugEnabled()) {
log.debug("Sequence Update from file : " + fileName + " : Started");
}
try {
Mediator m = MediatorFactoryFinder.getInstance().getMediator(
artifactConfig, properties);
if (m instanceof SequenceMediator) {
SequenceMediator seq = (SequenceMediator) m;
if ((SynapseConstants.MAIN_SEQUENCE_KEY.equals(existingArtifactName)
|| SynapseConstants.FAULT_SEQUENCE_KEY.equals(existingArtifactName))
&& !existingArtifactName.equals(seq.getName())) {
handleSynapseArtifactDeploymentError(
existingArtifactName + " sequence cannot be renamed");
}
seq.setFileName((new File(fileName)).getName());
if (log.isDebugEnabled()) {
log.debug("Sequence named '" + seq.getName()
+ "' has been built from the file " + fileName);
}
seq.init(getSynapseEnvironment());
if (log.isDebugEnabled()) {
log.debug("Initialized the sequence : " + seq.getName());
}
SequenceMediator existingSeq =
getSynapseConfiguration().getDefinedSequences().get(existingArtifactName);
getSynapseConfiguration().removeSequence(existingArtifactName);
if (!existingArtifactName.equals(seq.getName())) {
log.info("Sequence named '" + existingArtifactName + "' has been Undeployed");
}
getSynapseConfiguration().addSequence(seq.getName(), seq);
existingSeq.destroy();
if (log.isDebugEnabled()) {
log.debug("Sequence " + (existingArtifactName.equals(seq.getName()) ?
"update" : "deployment") + " from file : " + fileName + " : Completed");
}
log.info("Sequence named '" + seq.getName()
+ "' has been " + (existingArtifactName.equals(seq.getName()) ?
"update" : "deployed") + " from file : " + fileName);
return seq.getName();
} else {
handleSynapseArtifactDeploymentError("Sequence Update Failed. " +
"The artifact described in the file " + fileName + " is not a Sequence");
}
} catch (Exception e) {
handleSynapseArtifactDeploymentError(
"Sequence Update from the file : " + fileName + " : Failed.", e);
}
return null;
}
@Override
public void undeploySynapseArtifact(String artifactName) {
if (log.isDebugEnabled()) {
log.debug("Sequence Undeployment of the sequence named : "
+ artifactName + " : Started");
}
try {
SequenceMediator seq
= getSynapseConfiguration().getDefinedSequences().get(artifactName);
if (seq != null) {
if (SynapseConstants.MAIN_SEQUENCE_KEY.equals(seq.getName())
|| SynapseConstants.FAULT_SEQUENCE_KEY.equals(seq.getName())) {
handleSynapseArtifactDeploymentError(
"Cannot Undeploy the " + seq.getName() + " sequence");
}
getSynapseConfiguration().removeSequence(artifactName);
if (log.isDebugEnabled()) {
log.debug("Destroying the sequence named : " + artifactName);
}
seq.destroy();
if (log.isDebugEnabled()) {
log.debug("Sequence Undeployment of the sequence named : "
+ artifactName + " : Completed");
}
log.info("Sequence named '" + seq.getName() + "' has been undeployed");
} else if (log.isDebugEnabled()) {
log.debug("Sequence " + artifactName + " has already been undeployed");
}
} catch (Exception e) {
handleSynapseArtifactDeploymentError(
"Sequence Undeployement of sequence named : " + artifactName + " : Failed", e);
}
}
@Override
public void restoreSynapseArtifact(String artifactName) {
if (log.isDebugEnabled()) {
log.debug("Restoring the Sequence with name : " + artifactName + " : Started");
}
try {
SequenceMediator seq
= getSynapseConfiguration().getDefinedSequences().get(artifactName);
OMElement seqElem = MediatorSerializerFinder.getInstance().getSerializer(seq).
serializeMediator(null, seq);
if (seq.getFileName() != null) {
String fileName = getServerConfigurationInformation().getSynapseXMLLocation()
+ File.separator + MultiXMLConfigurationBuilder.SEQUENCES_DIR
+ File.separator + seq.getFileName();
writeToFile(seqElem, fileName);
if (log.isDebugEnabled()) {
log.debug("Restoring the Sequence with name : " + artifactName + " : Completed");
}
log.info("Sequence named '" + artifactName + "' has been restored");
} else {
handleSynapseArtifactDeploymentError("Couldn't restore the sequence named '"
+ artifactName + "', filename cannot be found");
}
} catch (Exception e) {
handleSynapseArtifactDeploymentError(
"Restoring of the sequence named '" + artifactName + "' has failed", e);
}
}
}