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1. A1 SIM has to be cloned from this link: https://gerrit.o-ran-sc.org/r/admin/repos/sim/a1-interface,general

2. Go to the directory: "a1-interface/near-rt-ric-simulator/test/STD_2.0.0" and edit the file called "build_and_start_with_kafka.sh"
   On the line 98, change Kafka Cluster address and port: MSG_BROKER_URL=localhost:9092
   Also, you can set request_topic and response_topic for per policy type. However, for the Step 5, you have to configure your topics named kafkatopicreq2 and kafkatopicres2.
   To do so, go to the directory "a1-interface/near-rt-ric-simulator/test/KAFKA_DISPATCHER/resources" and edit the file named "policytype_to_topicmap.json"
   After Kafka Cluster is being created, please validate

   existance

   existence of your topics using a command like the below:
   P.S: Please don't forget to change the path for kafka-topics.sh in accordance with your Kafka Cluster installation.

   Code Block
   language bash
   $ /opt/kafka/bin/kafka-topics.sh --list --bootstrap-server localhost:9092 kafkatopicreq2 kafkatopicres2

   
   

3. In order to build & start A1 SIM with Kafka Cluster Communicator module, fire this command: "./build_and_start_with_kafka.sh duplicate-check kafka-srv publish-resp"

4. Check to see both containers are available and running.$ docker ps
   

   Code Block
   language bash
   $ docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES dd966210ce86 a1test "/bin/sh -c 'src/sta…" About a minute ago Up About a minute a1StdSimulator 1ac17bac7ffa kafka_dispatcher "/bin/sh -c src/star…" About a minute ago Up About a minute kafkamessagedispatcher

   
   

5. Finally, run unit test cases:
   $ ./basic_test.sh nonsecure duplicate-check ignore-ext-srv
   
   When the test cases run successfully, you will see a message like the below:
   ********************
   *** All tests ok ***
   ********************

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