public static LayerPageLink create(String name, String id, LayerInfoModels models) {
if (name.equals(WORKSPACE.getName())) {
return new WorkspaceLink(id, models);
} else if (name.equals(STORE.getName())) {
return new StoreLink(id, models);
} else if (name.equals(NAME.getName())) {
return new LayerLink(id, models);
}
throw new IllegalArgumentException("Don't know a property named " + name);
}
private void emitAttributeValueWrittenNotification(
OperationContext context,
PathAddress address,
String attributeName,
ModelNode oldValue,
ModelNode newValue) {
// only emit a notification if the value has been successfully changed
if (oldValue.equals(newValue)) {
return;
}
ModelNode data = new ModelNode();
data.get(NAME.getName()).set(attributeName);
data.get(GlobalNotifications.OLD_VALUE).set(oldValue);
data.get(GlobalNotifications.NEW_VALUE).set(newValue);
Notification notification =
new Notification(
ATTRIBUTE_VALUE_WRITTEN_NOTIFICATION,
address,
ControllerLogger.ROOT_LOGGER.attributeValueWritten(attributeName, oldValue, newValue),
data);
context.emit(notification);
}
@Override
public void execute(OperationContext context, ModelNode operation)
throws OperationFailedException {
NAME.validateOperation(operation);
final ModelNode nameModel =
GlobalOperationAttributes.NAME.resolveModelAttribute(context, operation);
final PathAddress address = context.getCurrentAddress();
final ImmutableManagementResourceRegistration registry = context.getResourceRegistration();
if (registry == null) {
throw new OperationFailedException(ControllerLogger.ROOT_LOGGER.noSuchResourceType(address));
}
final boolean useEnhancedSyntax = containsEnhancedSyntax(nameModel.asString(), registry);
final String attributeName;
final String attributeExpression;
if (useEnhancedSyntax) {
attributeExpression = nameModel.asString();
attributeName = extractAttributeName(nameModel.asString());
} else {
attributeName = nameModel.asString();
attributeExpression = attributeName;
}
final AttributeAccess attributeAccess =
registry.getAttributeAccess(PathAddress.EMPTY_ADDRESS, attributeName);
if (attributeAccess == null) {
throw new OperationFailedException(
ControllerLogger.ROOT_LOGGER.unknownAttribute(attributeName));
} else if (attributeAccess.getAccessType() != AttributeAccess.AccessType.READ_WRITE) {
throw new OperationFailedException(
ControllerLogger.ROOT_LOGGER.attributeNotWritable(attributeName));
} else {
// Authorize
ModelNode currentValue;
if (attributeAccess.getStorageType() == AttributeAccess.Storage.CONFIGURATION) {
ModelNode model = context.readResourceForUpdate(PathAddress.EMPTY_ADDRESS).getModel();
currentValue = model.has(attributeName) ? model.get(attributeName) : new ModelNode();
} else {
currentValue = new ModelNode();
}
AuthorizationResult authorizationResult =
context.authorize(operation, attributeName, currentValue);
if (authorizationResult.getDecision() == AuthorizationResult.Decision.DENY) {
throw ControllerLogger.ROOT_LOGGER.unauthorized(
operation.require(OP).asString(), address, authorizationResult.getExplanation());
}
if (attributeAccess.getStorageType() == AttributeAccess.Storage.CONFIGURATION
&& !registry.isRuntimeOnly()) {
// if the attribute is stored in the configuration, we can read its
// old and new value from the resource's model before and after executing its write handler
final ModelNode oldValue = currentValue.clone();
doExecuteInternal(
context,
operation,
attributeAccess,
attributeName,
currentValue,
useEnhancedSyntax,
attributeExpression);
ModelNode model = context.readResource(PathAddress.EMPTY_ADDRESS).getModel();
ModelNode newValue = model.has(attributeName) ? model.get(attributeName) : new ModelNode();
emitAttributeValueWrittenNotification(context, address, attributeName, oldValue, newValue);
} else {
assert attributeAccess.getStorageType() == AttributeAccess.Storage.RUNTIME;
// if the attribute is a runtime attribute, its old and new values must
// be read using the attribute's read handler and the write operation
// must be sandwiched between the 2 calls to the read handler.
// Each call to the read handlers will have their own results while
// the call to the write handler will use this OSH context result.
OperationContext.Stage currentStage = context.getCurrentStage();
final ModelNode readAttributeOperation =
Util.createOperation(READ_ATTRIBUTE_OPERATION, address);
readAttributeOperation.get(NAME.getName()).set(attributeName);
ReadAttributeHandler readAttributeHandler = new ReadAttributeHandler(null, null, false);
// create 2 model nodes to store the result of the read-attribute operations
// before and after writing the value
final ModelNode oldValue = new ModelNode();
final ModelNode newValue = new ModelNode();
// We're going to add a bunch of steps, but we want them to execute right away
// so we use the 'addFirst=true' param to addStep. That means we add them
// in reverse order of how they will execute
// 4th OSH is to emit the notification
context.addStep(
new OperationStepHandler() {
@Override
public void execute(OperationContext context, ModelNode operation)
throws OperationFailedException {
// aggregate data from the 2 read-attribute operations
emitAttributeValueWrittenNotification(
context, address, attributeName, oldValue.get(RESULT), newValue.get(RESULT));
}
},
currentStage,
true);
// 3rd OSH is to read the new value
context.addStep(newValue, readAttributeOperation, readAttributeHandler, currentStage, true);
// 2nd OSH is to write the value
context.addStep(
new OperationStepHandler() {
@Override
public void execute(OperationContext context, ModelNode operation)
throws OperationFailedException {
doExecuteInternal(
context,
operation,
attributeAccess,
attributeName,
oldValue.get(RESULT),
useEnhancedSyntax,
attributeExpression);
}
},
currentStage,
true);
// 1st OSH is to read the old value
context.addStep(oldValue, readAttributeOperation, readAttributeHandler, currentStage, true);
}
}
}
