dlg99 commented on a change in pull request #10498:
URL: https://github.com/apache/pulsar/pull/10498#discussion_r632659889
##########
File path:
pulsar-functions/instance/src/main/java/org/apache/pulsar/functions/instance/ContextImpl.java
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@@ -706,4 +714,67 @@ public void close() {
logger.warn("Failed to close producers", e);
}
}
+
+ @Override
+ public void seek(String topic, int partition, MessageId messageId) throws
PulsarClientException {
+ Consumer<?> consumer = getConsumer(topic, partition);
+ consumer.seek(messageId);
+ }
+
+ @Override
+ public void pause(String topic, int partition) throws
PulsarClientException {
+ getConsumer(topic, partition).pause();
+ }
+
+ @Override
+ public void resume(String topic, int partition) throws
PulsarClientException {
+ getConsumer(topic, partition).resume();
+ }
+
+ public void setInputConsumers(List<Consumer<?>> inputConsumers) {
+ this.inputConsumers = inputConsumers;
+ inputConsumers.stream()
+ .flatMap(consumer ->
+ consumer instanceof MultiTopicsConsumerImpl
+ ? ((MultiTopicsConsumerImpl<?>)
consumer).getConsumers().stream()
+ : Stream.of(consumer))
+ .forEach(consumer ->
topicConsumers.putIfAbsent(TopicName.get(consumer.getTopic()), consumer));
+ }
+
+ @VisibleForTesting
+ Consumer<?> getConsumer(String topic, int partition) throws
PulsarClientException {
+ if (inputConsumers == null) {
+ throw new PulsarClientException("Getting consumer is not
supported");
+ }
+ for (int i = 0; i < 2; i++) {
Review comment:
Two attempts to get the consumer:
1. Try to get the consumer.
2. If not found, reprocess MultiTopicsConsumers in case new consumers
appeared (happens on repartition or a new topic that matches provided pattern
if the pattern is used),
3. give it another try.
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