Add kafka docker container for policy CSITs

Replaced dmaap  with kafka in CLAMP docker tests.

Issue-ID: POLICY-4201
Signed-off-by: zrrmmua <ramesh.murugan.iyer@est.tech>
Change-Id: I4d05e24d3ececf2253ebc39785882be00bf9eaf4

5 files changed, 167 insertions, 0 deletions

diff --git a/csit/resources/scripts/kafka_consumer.py b/csit/resources/scripts/kafka_consumer.py
new file mode 100755
index 00000000..80b6167a
--- /dev/null
+++ b/csit/resources/scripts/kafka_consumer.py
@@ -0,0 +1,71 @@
+#!/usr/bin/env python3
+#
+# ============LICENSE_START====================================================
+#  Copyright (C) 2023 Nordix Foundation.
+# =============================================================================
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
+# ============LICENSE_END======================================================
+
+# Python utility to fetch kafka topic and look for required messages.
+# Accepts the arguments {topic_name} and {list of expected values} and {timeout} to verify the kafka topic.
+
+
+from confluent_kafka import Consumer, KafkaException
+import sys
+import time
+
+def consume_kafka_topic(topic, expected_values, timeout):
+    config = {
+            'bootstrap.servers': 'localhost:29092',
+            'group.id': 'testgrp',
+            'auto.offset.reset': 'earliest'
+    }
+    consumer = Consumer(config)
+    consumer.subscribe([topic])
+    try:
+        start_time = time.time()
+        while time.time() - start_time < timeout:
+                msg = consumer.poll(1.0)
+                if msg is None:
+                    continue
+                if msg.error():
+                    if msg.error().code() == KafkaException._PARTITION_EOF:
+                        sys.stderr.write(f"Reached end of topic {msg.topic()} / partition {msg.partition()}\n")
+                        print('ERROR')
+                        sys.exit(404)
+                    else:
+                        # Error
+                        raise KafkaException(msg.error())
+                else:
+                    # Message received
+                    message = msg.value().decode('utf-8')
+                    if verify_msg(expected_values, message):
+                        print(message)
+                        sys.exit(200)
+    finally:
+        consumer.close()
+
+def verify_msg(expected_values, message):
+    for item in expected_values:
+        if item not in message:
+            return False
+    return True
+
+
+if __name__ == '__main__':
+    topic_name = sys.argv[1]
+    timeout = sys.argv[2]  # timeout in seconds for verifying the kafka topic
+    expected_values = sys.argv[3:]
+    consume_kafka_topic(topic_name, expected_values, timeout)
diff --git a/csit/resources/scripts/kafka_producer.py b/csit/resources/scripts/kafka_producer.py
new file mode 100755
index 00000000..ff129872
--- /dev/null
+++ b/csit/resources/scripts/kafka_producer.py
@@ -0,0 +1,41 @@
+#!/usr/bin/env python3
+#
+# ============LICENSE_START====================================================
+#  Copyright (C) 2023 Nordix Foundation.
+# =============================================================================
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
+# ============LICENSE_END======================================================
+
+# Python utility to produce a message on a kafka topic
+# Accepts the arguments {topic_name} and {message}
+
+from confluent_kafka import Producer
+import sys
+
+def post_to_kafka(topic, message):
+    conf = {'bootstrap.servers': 'localhost:29092'}
+
+    producer = Producer(conf)
+    try:
+        producer.produce(topic, value=message.encode('utf-8'))
+        producer.flush()
+        print('Message posted to Kafka topic: {}'.format(topic))
+    except Exception as e:
+        print('Failed to post message: {}'.format(str(e)))
+    finally:
+        producer.flush()
+
+if __name__ == '__main__':
+    post_to_kafka(sys.argv[1], sys.argv[2])
diff --git a/csit/resources/scripts/make_topics.py b/csit/resources/scripts/make_topics.py
new file mode 100755
index 00000000..daee4341
--- /dev/null
+++ b/csit/resources/scripts/make_topics.py
@@ -0,0 +1,41 @@
+#!/usr/bin/env python3
+#
+# ============LICENSE_START====================================================
+#  Copyright (C) 2023 Nordix Foundation.
+# =============================================================================
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
+# ============LICENSE_END======================================================
+
+# Python utility to create a new kafka topic
+# Accepts the argument {topic_name}
+
+from confluent_kafka.admin import AdminClient, NewTopic
+import sys
+
+def create_topic(bootstrap_servers, topic_name, num_partitions=2, replication_factor=2):
+    admin_client = AdminClient({'bootstrap.servers': bootstrap_servers})
+
+    # Define the topic configuration
+    topic = NewTopic(topic_name, num_partitions=num_partitions, replication_factor=replication_factor)
+
+    # Create the topic
+    admin_client.create_topics([topic])
+
+
+if __name__ == '__main__':
+    topic_name = sys.argv[1]
+    bootstrap_servers = 'localhost:29092'
+
+    create_topic(bootstrap_servers, topic_name)
diff --git a/csit/resources/scripts/prepare-robot-env.sh b/csit/resources/scripts/prepare-robot-env.sh
index 2281d235..2b773802 100755
--- a/csit/resources/scripts/prepare-robot-env.sh
+++ b/csit/resources/scripts/prepare-robot-env.sh
@@ -44,6 +44,10 @@ mkdir -p "${ROBOT_VENV}"/src/onap
 rm -rf "${ROBOT_VENV}"/src/onap/testsuite
 python3 -m pip install -qq --upgrade --extra-index-url="https://nexus3.onap.org/repository/PyPi.staging/simple" 'robotframework-onap==0.6.0.*' --pre
 
+# install confluent-kafka
+echo "Installing python confluent-kafka library"
+python3 -m pip install -qq confluent-kafka
+
 echo "Uninstall docker-py and reinstall docker."
 python3 -m pip uninstall -y -qq docker
 python3 -m pip install -U -qq docker
diff --git a/csit/resources/tests/common-library.robot b/csit/resources/tests/common-library.robot
index 8c279176..f5db8e0e 100644
--- a/csit/resources/tests/common-library.robot
+++ b/csit/resources/tests/common-library.robot
@@ -147,3 +147,13 @@ CheckTopic
     Status Should Be    OK    ${resp}
     Should Contain    ${resp.text}    ${expected_status}
     [Return]    ${resp.text}
+
+CheckKafkaTopic
+    [Arguments]    ${topic}    ${expected_status}
+    ${resp}=    Run Process    ${CURDIR}/kafka_consumer.py    ${topic}    30    ${expected_status}
+    Log to console  Received response from kafka ${resp.stdout}
+    Should Contain    ${resp.text}    ${expected_status}
+
+GetKafkaTopic
+    [Arguments]    ${topic}
+    ${resp}=    Run Process    ${CURDIR}/make_topics.py    ${topic}
\ No newline at end of file