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Default implementation of deployment for federated topologies
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/*
* Fabric3
* Copyright (c) 2009-2013 Metaform Systems
*
* Fabric3 is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version, with the
* following exception:
*
* Linking this software statically or dynamically with other
* modules is making a combined work based on this software.
* Thus, the terms and conditions of the GNU General Public
* License cover the whole combination.
*
* As a special exception, the copyright holders of this software
* give you permission to link this software with independent
* modules to produce an executable, regardless of the license
* terms of these independent modules, and to copy and distribute
* the resulting executable under terms of your choice, provided
* that you also meet, for each linked independent module, the
* terms and conditions of the license of that module. An
* independent module is a module which is not derived from or
* based on this software. If you modify this software, you may
* extend this exception to your version of the software, but
* you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version.
*
* Fabric3 is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details.
*
* You should have received a copy of the
* GNU General Public License along with Fabric3.
* If not, see listeners;
private long timeout = 60000;
public FederatedDeployer(@Reference DomainTopologyService topologyService,
@Reference SerializationService serializationService,
@Monitor DeployerMonitor monitor) {
this.topologyService = topologyService;
this.serializationService = serializationService;
this.monitor = monitor;
this.listeners = new ArrayList();
}
@Reference(required = false)
public void setListeners(List listeners) {
this.listeners = listeners;
}
@Property(required = false)
public void setTimeout(long timeout) {
this.timeout = timeout;
}
@SuppressWarnings({"ThrowableResultOfMethodCallIgnored"})
public synchronized void deploy(DeploymentPackage deploymentPackage) throws DeploymentException {
Deployment currentDeployment = deploymentPackage.getCurrentDeployment();
Deployment fullDeployment = deploymentPackage.getFullDeployment();
// tracks deployment responses by zone
List completed = new ArrayList();
for (String zoneName : currentDeployment.getZones()) {
monitor.deploy(zoneName);
DeploymentCommand command;
try {
command = createCommand(zoneName, currentDeployment, fullDeployment);
} catch (IOException e) {
throw new DeploymentException(e);
}
notifyDeploy(command);
Zone zone = new Zone(zoneName, Collections.emptyList());
if (!topologyService.getZones().contains(zone)) {
// no participants available, proceed with deployment but do not attempt to send to the zone
monitor.participantNotAvailable(zoneName);
} else {
List responses;
try {
// send deployments in a fail-fast manner
responses = topologyService.sendSynchronousToZone(zoneName, command, true, timeout);
} catch (MessageException e) {
// rollback(zone, currentDeployment, completed, zoneResponses);
throw new DeploymentException(e);
}
if (responses.isEmpty()) {
throw new DeploymentException("Deployment responses not received");
}
Response last = responses.get(responses.size() - 1);
String runtimeName = last.getRuntimeName();
if (last instanceof ErrorResponse) {
ErrorResponse response = (ErrorResponse) last;
monitor.deploymentError(runtimeName, response.getException());
// rollback(zone, currentDeployment, completed, zoneResponses);
throw new DeploymentException("Deployment errors encountered and logged");
}
}
completed.add(command);
}
for (DeploymentCommand command : completed) {
// TODO a commit needs to be refactored to a separate coordinator
notifyCompletion(command);
}
}
private DeploymentCommand createCommand(String zone, Deployment currentDeployment, Deployment fullDeployment) throws IOException {
DeploymentUnit currentDeploymentUnit = currentDeployment.getDeploymentUnit(zone);
SerializedDeploymentUnit currentSerializedUnit = createSerializedUnit(currentDeploymentUnit);
DeploymentUnit fullDeploymentUnit = fullDeployment.getDeploymentUnit(zone);
SerializedDeploymentUnit fullSerializedUnit = createSerializedUnit(fullDeploymentUnit);
return new DeploymentCommand(zone, currentSerializedUnit, fullSerializedUnit);
}
private SerializedDeploymentUnit createSerializedUnit(DeploymentUnit deploymentUnit) throws IOException {
List provisionCommands = deploymentUnit.getProvisionCommands();
byte[] serializedProvisionCommands = serializationService.serialize((Serializable) provisionCommands);
List extensionCommands = deploymentUnit.getExtensionCommands();
byte[] serializedExtensionCommands = serializationService.serialize((Serializable) extensionCommands);
List commands = deploymentUnit.getCommands();
byte[] serializedCommands = serializationService.serialize((Serializable) commands);
return new SerializedDeploymentUnit(serializedProvisionCommands, serializedExtensionCommands, serializedCommands);
}
private void notifyDeploy(DeploymentCommand command) throws DeploymentException {
for (FederatedDeployerListener listener : listeners) {
listener.onDeploy(command);
}
}
private void notifyCompletion(DeploymentCommand command) {
for (FederatedDeployerListener listener : listeners) {
listener.onCompletion(command);
}
}
}
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