Fix failing Kafka tests

All the Kafka components need something near 10 seconds to come up
completely. This review tweaks the timing to allow the test Kafka server
to come up and to allow the consumers to connect to it.

Issue-ID: POLICY-2106
Change-Id: I6dd8ace0848bdc2549e658ef8908b4d85d5ea789
Signed-off-by: liamfallon <liam.fallon@est.tech>

1 files changed, 24 insertions, 41 deletions

diff --git a/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-kafka/src/main/java/org/onap/policy/apex/plugins/event/carrier/kafka/ApexKafkaConsumer.java b/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-kafka/src/main/java/org/onap/policy/apex/plugins/event/carrier/kafka/ApexKafkaConsumer.java
index 947dd5466..591f83237 100644
--- a/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-kafka/src/main/java/org/onap/policy/apex/plugins/event/carrier/kafka/ApexKafkaConsumer.java
+++ b/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-kafka/src/main/java/org/onap/policy/apex/plugins/event/carrier/kafka/ApexKafkaConsumer.java
@@ -49,70 +49,53 @@ public class ApexKafkaConsumer extends ApexPluginsEventConsumer {
     // The event receiver that will receive events from this consumer
     private ApexEventReceiver eventReceiver;
 
-    // The Kafka consumer used to receive events using Kafka
-    private KafkaConsumer<String, String> kafkaConsumer;
-
     /**
      * {@inheritDoc}.
      */
     @Override
     public void init(final String consumerName, final EventHandlerParameters consumerParameters,
-                    final ApexEventReceiver incomingEventReceiver) throws ApexEventException {
+        final ApexEventReceiver incomingEventReceiver) throws ApexEventException {
         this.eventReceiver = incomingEventReceiver;
         this.name = consumerName;
 
         // Check and get the Kafka Properties
         if (!(consumerParameters.getCarrierTechnologyParameters() instanceof KafkaCarrierTechnologyParameters)) {
-            LOGGER.warn("specified consumer properties of type \""
-                            + consumerParameters.getCarrierTechnologyParameters().getClass().getName()
-                            + "\" are not applicable to a Kafka consumer");
             throw new ApexEventException("specified consumer properties of type \""
-                            + consumerParameters.getCarrierTechnologyParameters().getClass().getName()
-                            + "\" are not applicable to a Kafka consumer");
-        }
-        kafkaConsumerProperties = (KafkaCarrierTechnologyParameters) consumerParameters
-                        .getCarrierTechnologyParameters();
-
-        // Kick off the Kafka consumer
-        kafkaConsumer = new KafkaConsumer<>(kafkaConsumerProperties.getKafkaConsumerProperties());
-        kafkaConsumer.subscribe(kafkaConsumerProperties.getConsumerTopicListAsCollection());
-        if (LOGGER.isDebugEnabled()) {
-            LOGGER.debug("event receiver for " + this.getClass().getName() + ":" + this.name + " subscribed to topics: "
-                            + kafkaConsumerProperties.getConsumerTopicList());
+                + consumerParameters.getCarrierTechnologyParameters().getClass().getName()
+                + "\" are not applicable to a Kafka consumer");
         }
+        kafkaConsumerProperties =
+            (KafkaCarrierTechnologyParameters) consumerParameters.getCarrierTechnologyParameters();
     }
 
-
     /**
      * {@inheritDoc}.
      */
     @Override
     public void run() {
         // Kick off the Kafka consumer
-        kafkaConsumer = new KafkaConsumer<>(kafkaConsumerProperties.getKafkaConsumerProperties());
-        kafkaConsumer.subscribe(kafkaConsumerProperties.getConsumerTopicListAsCollection());
-        if (LOGGER.isDebugEnabled()) {
-            LOGGER.debug("event receiver for " + this.getClass().getName() + ":" + this.name + " subscribed to topics: "
-                            + kafkaConsumerProperties.getConsumerTopicList());
-        }
+        try (KafkaConsumer<String, String> kafkaConsumer =
+            new KafkaConsumer<>(kafkaConsumerProperties.getKafkaConsumerProperties())) {
+            kafkaConsumer.subscribe(kafkaConsumerProperties.getConsumerTopicListAsCollection());
+            if (LOGGER.isDebugEnabled()) {
+                LOGGER.debug("event receiver for {}:{} subscribed to topics: {}", this.getClass().getName(), this.name,
+                    kafkaConsumerProperties.getConsumerTopicList());
+            }
 
-        // The endless loop that receives events over Kafka
-        while (consumerThread.isAlive() && !stopOrderedFlag) {
-            try {
-                final ConsumerRecords<String, String> records = kafkaConsumer
-                                .poll(kafkaConsumerProperties.getConsumerPollDuration());
-                for (final ConsumerRecord<String, String> record : records) {
-                    traceIfTraceEnabled(record);
-                    eventReceiver.receiveEvent(new Properties(), record.value());
+            // The endless loop that receives events over Kafka
+            while (consumerThread.isAlive() && !stopOrderedFlag) {
+                try {
+                    final ConsumerRecords<String, String> records =
+                        kafkaConsumer.poll(kafkaConsumerProperties.getConsumerPollDuration());
+                    for (final ConsumerRecord<String, String> record : records) {
+                        traceIfTraceEnabled(record);
+                        eventReceiver.receiveEvent(new Properties(), record.value());
+                    }
+                } catch (final Exception e) {
+                    LOGGER.warn("error receiving events on thread {}", consumerThread.getName(), e);
                 }
-            } catch (final Exception e) {
-                LOGGER.warn("error receiving events on thread {}", consumerThread.getName(), e);
             }
         }
-
-        if (!consumerThread.isInterrupted()) {
-            kafkaConsumer.close();
-        }
     }
 
     /**
@@ -123,7 +106,7 @@ public class ApexKafkaConsumer extends ApexPluginsEventConsumer {
     private void traceIfTraceEnabled(final ConsumerRecord<String, String> record) {
         if (LOGGER.isTraceEnabled()) {
             LOGGER.trace("event received for {} for forwarding to Apex engine : {} {}",
-                            this.getClass().getName() + ":" + this.name, record.key(), record.value());
+                this.getClass().getName() + ":" + this.name, record.key(), record.value());
         }
     }