public ServiceResponse<KieScannerResource> getScannerInfo(String id) {
try {
KieContainerInstance kci = (KieContainerInstance) context.getContainer(id);
if (kci != null && kci.getKieContainer() != null) {
InternalKieScanner scanner = kci.getScanner();
KieScannerResource info = null;
if (scanner != null) {
info = new KieScannerResource(mapStatus(scanner.getStatus()));
} else {
info = new KieScannerResource(KieScannerStatus.DISPOSED);
}
return new ServiceResponse<KieScannerResource>(
ServiceResponse.ResponseType.SUCCESS, "Scanner info successfully retrieved", info);
} else {
return new ServiceResponse<KieScannerResource>(
ServiceResponse.ResponseType.FAILURE, "Unknown container " + id + ".");
}
} catch (Exception e) {
logger.error("Error retrieving scanner info for container '" + id + "'.", e);
return new ServiceResponse<KieScannerResource>(
ServiceResponse.ResponseType.FAILURE,
"Error retrieving scanner info for container '"
+ id
+ "': "
+ e.getClass().getName()
+ ": "
+ e.getMessage());
}
}
public ServiceResponse<Void> disposeContainer(String containerId) {
try {
KieContainerInstance kci = (KieContainerInstance) context.removeContainer(containerId);
if (kci != null) {
synchronized (kci) {
kci.setStatus(KieContainerStatus.DISPOSING); // just in case
if (kci.getKieContainer() != null) {
InternalKieContainer kieContainer = kci.getKieContainer();
kci.setKieContainer(null); // helps reduce concurrent access issues
try {
// this may fail, but we already removed the container from the registry
kieContainer.dispose();
} catch (Exception e) {
logger.warn(
"Container '"
+ containerId
+ "' disposed, but an unnexpected exception was raised",
e);
return new ServiceResponse<Void>(
ServiceResponse.ResponseType.SUCCESS,
"Container "
+ containerId
+ " disposed, but exception was raised: "
+ e.getClass().getName()
+ ": "
+ e.getMessage());
}
return new ServiceResponse<Void>(
ServiceResponse.ResponseType.SUCCESS,
"Container " + containerId + " successfully disposed.");
} else {
return new ServiceResponse<Void>(
ServiceResponse.ResponseType.SUCCESS,
"Container " + containerId + " was not instantiated.");
}
}
} else {
return new ServiceResponse<Void>(
ServiceResponse.ResponseType.SUCCESS,
"Container " + containerId + " was not instantiated.");
}
} catch (Exception e) {
logger.error("Error disposing Container '" + containerId + "'", e);
return new ServiceResponse<Void>(
ServiceResponse.ResponseType.FAILURE,
"Error disposing container "
+ containerId
+ ": "
+ e.getClass().getName()
+ ": "
+ e.getMessage());
}
}
public ServiceResponse<KieScannerResource> updateScanner(String id, KieScannerResource resource) {
if (resource == null || resource.getStatus() == null) {
logger.error("Error updating scanner for container " + id + ". Status is null: " + resource);
return new ServiceResponse<KieScannerResource>(
ServiceResponse.ResponseType.FAILURE,
"Error updating scanner for container " + id + ". Status is null: " + resource);
}
KieScannerStatus status = resource.getStatus();
try {
KieContainerInstance kci = (KieContainerInstance) context.getContainer(id);
if (kci != null && kci.getKieContainer() != null) {
switch (status) {
case CREATED:
// create the scanner
return createScanner(id, kci);
case STARTED:
// start the scanner
return startScanner(id, resource, kci);
case STOPPED:
// stop the scanner
return stopScanner(id, resource, kci);
case SCANNING:
// scan now
return scanNow(id, resource, kci);
case DISPOSED:
// dispose
return disposeScanner(id, resource, kci);
default:
// error
return new ServiceResponse<KieScannerResource>(
ServiceResponse.ResponseType.FAILURE,
"Unknown status '" + status + "' for scanner on container " + id + ".");
}
} else {
return new ServiceResponse<KieScannerResource>(
ServiceResponse.ResponseType.FAILURE, "Unknown container " + id + ".");
}
} catch (Exception e) {
logger.error("Error updating scanner for container '" + id + "': " + resource, e);
return new ServiceResponse<KieScannerResource>(
ServiceResponse.ResponseType.FAILURE,
"Error updating scanner for container '"
+ id
+ "': "
+ resource
+ ": "
+ e.getClass().getName()
+ ": "
+ e.getMessage());
}
}
public ServiceResponse<ReleaseId> updateContainerReleaseId(String id, ReleaseId releaseId) {
if (releaseId == null) {
logger.error("Error updating releaseId for container '" + id + "'. ReleaseId is null.");
return new ServiceResponse<ReleaseId>(
ServiceResponse.ResponseType.FAILURE,
"Error updating releaseId for container " + id + ". ReleaseId is null. ");
}
try {
KieContainerInstance kci = (KieContainerInstance) context.getContainer(id);
// the following code is subject to a concurrent call to dispose(), but the cost of
// synchronizing it
// would likely not be worth it. At this point a decision was made to fail the execution if a
// concurrent
// call do dispose() is executed.
if (kci != null && kci.getKieContainer() != null) {
Results results = kci.getKieContainer().updateToVersion(releaseId);
if (results.hasMessages(Level.ERROR)) {
logger.error(
"Error updating releaseId for container "
+ id
+ " to version "
+ releaseId
+ "\nMessages: "
+ results.getMessages());
return new ServiceResponse<ReleaseId>(
ServiceResponse.ResponseType.FAILURE,
"Error updating release id on container " + id + " to " + releaseId,
kci.getResource().getReleaseId());
} else {
return new ServiceResponse<ReleaseId>(
ServiceResponse.ResponseType.SUCCESS,
"Release id successfuly updated.",
kci.getResource().getReleaseId());
}
} else {
return new ServiceResponse<ReleaseId>(
ServiceResponse.ResponseType.FAILURE, "Container " + id + " is not instantiated.");
}
} catch (Exception e) {
logger.error("Error updating releaseId for container '" + id + "'", e);
return new ServiceResponse<ReleaseId>(
ServiceResponse.ResponseType.FAILURE,
"Error updating releaseId for container "
+ id
+ ": "
+ e.getClass().getName()
+ ": "
+ e.getMessage());
}
}
public ServiceResponse<KieContainerResource> getContainerInfo(String id) {
try {
KieContainerInstance ci = context.getContainer(id);
if (ci != null) {
return new ServiceResponse<KieContainerResource>(
ServiceResponse.ResponseType.SUCCESS, "Info for container " + id, ci.getResource());
}
return new ServiceResponse<KieContainerResource>(
ServiceResponse.ResponseType.FAILURE, "Container " + id + " is not instantiated.");
} catch (Exception e) {
logger.error("Error retrieving info for container '" + id + "'", e);
return new ServiceResponse<KieContainerResource>(
ServiceResponse.ResponseType.FAILURE,
"Error retrieving container info: " + e.getClass().getName() + ": " + e.getMessage());
}
}
public ServiceResponse<KieContainerResourceList> listContainers() {
try {
List<KieContainerResource> containers = new ArrayList<KieContainerResource>();
for (KieContainerInstance instance : context.getContainers()) {
containers.add(instance.getResource());
}
KieContainerResourceList cil = new KieContainerResourceList(containers);
return new ServiceResponse<KieContainerResourceList>(
ServiceResponse.ResponseType.SUCCESS, "List of created containers", cil);
} catch (Exception e) {
logger.error("Error retrieving list of containers", e);
return new ServiceResponse<KieContainerResourceList>(
ServiceResponse.ResponseType.FAILURE,
"Error listing containers: " + e.getClass().getName() + ": " + e.getMessage());
}
}
public ServiceResponse<String> callContainer(String containerId, String payload) {
if (payload == null) {
return new ServiceResponse<String>(
ServiceResponse.ResponseType.FAILURE,
"Error calling container " + containerId + ". Empty payload. ");
}
try {
KieContainerInstance kci = (KieContainerInstance) context.getContainer(containerId);
// the following code is subject to a concurrent call to dispose(), but the cost of
// synchronizing it
// would likely not be worth it. At this point a decision was made to fail the execution if a
// concurrent
// call do dispose() is executed.
if (kci != null && kci.getKieContainer() != null) {
String sessionId = null;
// this is a weak way of finding the lookup, but it is the same used in kie-camel. Will keep
// it for now.
Matcher m = LOOKUP.matcher(payload);
if (m.find()) {
sessionId = m.group(1);
}
KieSession ks = null;
if (sessionId != null) {
ks = kci.getKieContainer().getKieSession(sessionId);
} else {
ks = kci.getKieContainer().getKieSession();
}
if (ks != null) {
ClassLoader moduleClassLoader = kci.getKieContainer().getClassLoader();
XStream xs = XStreamXml.newXStreamMarshaller(moduleClassLoader);
Command<?> cmd = (Command<?>) xs.fromXML(payload);
if (cmd == null) {
return new ServiceResponse<String>(
ServiceResponse.ResponseType.FAILURE,
"Body of in message not of the expected type '" + Command.class.getName() + "'");
}
if (!(cmd instanceof BatchExecutionCommandImpl)) {
cmd =
new BatchExecutionCommandImpl(
Arrays.asList(new GenericCommand<?>[] {(GenericCommand<?>) cmd}));
}
ExecutionResults results = ks.execute((BatchExecutionCommandImpl) cmd);
String result = xs.toXML(results);
return new ServiceResponse<String>(
ServiceResponse.ResponseType.SUCCESS,
"Container " + containerId + " successfully called.",
result);
} else {
return new ServiceResponse<String>(
ServiceResponse.ResponseType.FAILURE,
"Session '" + sessionId + "' not found on container '" + containerId + "'.");
}
} else {
return new ServiceResponse<String>(
ServiceResponse.ResponseType.FAILURE,
"Container " + containerId + " is not instantiated.");
}
} catch (Exception e) {
logger.error("Error calling container '" + containerId + "'", e);
return new ServiceResponse<String>(
ServiceResponse.ResponseType.FAILURE,
"Error calling container "
+ containerId
+ ": "
+ e.getClass().getName()
+ ": "
+ e.getMessage());
}
}
public ServiceResponse<KieContainerResource> createContainer(
String containerId, KieContainerResource container) {
if (container == null || container.getReleaseId() == null) {
logger.error("Error creating container. Release Id is null: " + container);
return new ServiceResponse<KieContainerResource>(
ServiceResponse.ResponseType.FAILURE,
"Failed to create container " + containerId + ". Release Id is null: " + container + ".");
}
ReleaseId releaseId = container.getReleaseId();
try {
KieContainerInstance ci = new KieContainerInstance(containerId, KieContainerStatus.CREATING);
KieContainerInstance previous = null;
// have to synchronize on the ci or a concurrent call to dispose may create inconsistencies
synchronized (ci) {
if ((previous = context.addIfDoesntExist(containerId, ci)) == null) {
try {
KieServices ks = KieServices.Factory.get();
InternalKieContainer kieContainer =
(InternalKieContainer) ks.newKieContainer(releaseId);
if (kieContainer != null) {
ci.setKieContainer(kieContainer);
ci.getResource().setStatus(KieContainerStatus.STARTED);
return new ServiceResponse<KieContainerResource>(
ServiceResponse.ResponseType.SUCCESS,
"Container "
+ containerId
+ " successfully deployed with module "
+ releaseId
+ ".",
ci.getResource());
} else {
ci.getResource().setStatus(KieContainerStatus.FAILED);
return new ServiceResponse<KieContainerResource>(
ServiceResponse.ResponseType.FAILURE,
"Failed to create container " + containerId + " with module " + releaseId + ".");
}
} catch (Exception e) {
logger.error(
"Error creating container '" + containerId + "' for module '" + releaseId + "'", e);
ci.getResource().setStatus(KieContainerStatus.FAILED);
return new ServiceResponse<KieContainerResource>(
ServiceResponse.ResponseType.FAILURE,
"Failed to create container "
+ containerId
+ " with module "
+ releaseId
+ ": "
+ e.getClass().getName()
+ ": "
+ e.getMessage());
} finally {
persistContainer(ci);
}
} else {
return new ServiceResponse<KieContainerResource>(
ServiceResponse.ResponseType.FAILURE,
"Container " + containerId + " already exists.",
previous.getResource());
}
}
} catch (Exception e) {
logger.error(
"Error creating container '" + containerId + "' for module '" + releaseId + "'", e);
return new ServiceResponse<KieContainerResource>(
ServiceResponse.ResponseType.FAILURE,
"Error creating container "
+ containerId
+ " with module "
+ releaseId
+ ": "
+ e.getClass().getName()
+ ": "
+ e.getMessage());
}
}