/**
* Notification that initialization is complete and all input and output ports are connected and
* ready to receive and submit tuples.
*
* @throws Exception Operator failure, will cause the enclosing PE to terminate.
*/
@Override
public synchronized void allPortsReady() throws Exception {
// This method is commonly used by source operators.
// Operators that process incoming tuples generally do not need this notification.
OperatorContext context = getOperatorContext();
Logger.getLogger(this.getClass())
.trace(
"Operator "
+ context.getName()
+ " all ports are ready in PE: "
+ context.getPE().getPEId()
+ " in Job: "
+ context.getPE().getJobId());
}
/**
* Shutdown this operator.
*
* @throws Exception Operator failure, will cause the enclosing PE to terminate.
*/
public synchronized void shutdown() throws Exception {
OperatorContext context = getOperatorContext();
Logger.getLogger(this.getClass())
.trace(
"Operator "
+ context.getName()
+ " shutting down in PE: "
+ context.getPE().getPEId()
+ " in Job: "
+ context.getPE().getJobId());
// TODO: If needed, close connections or release resources related to any external system or
// data store.
// Must call super.shutdown()
super.shutdown();
}
@Override
public void shutdown() throws Exception {
if (client != null) client.shutdown();
if (simpleClient != null) simpleClient.shutdown();
OperatorContext context = getOperatorContext();
trace.log(
TraceLevel.ALL,
"Operator "
+ context.getName()
+ " shutting down in PE: "
+ context.getPE().getPEId()
+ " in Job: "
+ context.getPE().getJobId());
// Must call super.shutdown()
super.shutdown();
}
/**
* Initialize this operator. Called once before any tuples are processed.
*
* @param context OperatorContext for this operator.
* @throws Exception Operator failure, will cause the enclosing PE to terminate.
*/
@Override
public synchronized void initialize(OperatorContext context) throws Exception {
// Must call super.initialize(context) to correctly setup an operator.
super.initialize(context);
Logger.getLogger(this.getClass())
.trace(
"Operator "
+ context.getName()
+ " initializing in PE: "
+ context.getPE().getPEId()
+ " in Job: "
+ context.getPE().getJobId());
// TODO:
// If needed, insert code to establish connections or resources to communicate an external
// system or data store.
// The configuration information for this may come from parameters supplied to the operator
// invocation,
// or external configuration files or a combination of the two.
}
public void initSchema(StreamSchema ss) throws Exception {
trace.log(TraceLevel.INFO, "Connection properties: " + finalProperties);
Set<MetaType> supportedTypes = new HashSet<MetaType>();
supportedTypes.add(MetaType.RSTRING);
supportedTypes.add(MetaType.USTRING);
supportedTypes.add(MetaType.BLOB);
keyAH.initialize(ss, false, supportedTypes);
messageAH.initialize(ss, true, supportedTypes);
// blobs are not supported for topics
supportedTypes.remove(MetaType.BLOB);
topicAH.initialize(ss, false, supportedTypes);
OperatorContext operContext = getOperatorContext();
if (operContext.getParameterNames().contains("partition") == false) {
// we don't need to create this client if using simpleConsumerClient
trace.log(TraceLevel.INFO, "Creating client");
client = new KafkaClient(topicAH, keyAH, messageAH, finalProperties);
}
}
