public void initialize(OperatorContext context) throws Exception {
super.initialize(context);
String propFile = getPropertiesFile();
if (propFile != null) {
finalProperties.load(new FileReader(propFile));
}
finalProperties.putAll(properties);
if (finalProperties == null || finalProperties.isEmpty())
throw new Exception("Kafka connection properties must be specified.");
}
/**
* 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.
}
/**
* Process an incoming punctuation that arrived on the specified port.
*
* @param stream Port the punctuation is arriving on.
* @param mark The punctuation mark
* @throws Exception Operator failure, will cause the enclosing PE to terminate.
*/
@Override
public void processPunctuation(StreamingInput<Tuple> stream, Punctuation mark) throws Exception {
// For window markers, punctuate all output ports
super.processPunctuation(stream, mark);
}