Add kafka listener for data updated events

See "Running via Docker Compose" section from README.md file to have an
example of event processing

Issue-ID: CPS-371
Signed-off-by: Bruno Sakoto <bruno.sakoto@bell.ca>
Change-Id: Id3abfa32fb04e07102a5f28e6e43a9b533391188

3 files changed, 96 insertions, 6 deletions

diff --git a/src/main/resources/application-sasl-ssl-kafka.yml b/src/main/resources/application-sasl-ssl-kafka.yml
new file mode 100644
index 0000000..fdc6458
--- /dev/null
+++ b/src/main/resources/application-sasl-ssl-kafka.yml
@@ -0,0 +1,31 @@
+# ============LICENSE_START=======================================================
+# Copyright (c) 2021 Bell Canada.
+# ================================================================================
+# 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.
+# ============LICENSE_END=========================================================
+
+# Spring profile configuration for sasl ssl Kafka
+
+spring:
+    kafka:
+        bootstrap-servers: ${KAFKA_BOOTSTRAP_SERVER}
+        security:
+            protocol: SASL_SSL
+        ssl:
+            trust-store-type: JKS
+            trust-store-location: ${KAFKA_SSL_TRUST_STORE_LOCATION}
+            trust-store-password: ${KAFKA_SSL_TRUST_STORE_PASSWORD}
+        properties:
+            sasl.mechanism: SCRAM-SHA-512
+            sasl.jaas.config: ${KAFKA_SASL_JAAS_CONFIG}
+            ssl.endpoint.identification.algorithm:
diff --git a/src/main/resources/application.yml b/src/main/resources/application.yml
index d4c799c..5fe30b0 100755
--- a/src/main/resources/application.yml
+++ b/src/main/resources/application.yml
@@ -27,10 +27,26 @@ spring:
         change-log: classpath:/db/changelog/changelog-master.xml
     jpa:
         properties:
-            hibernate:
-                dialect: org.hibernate.dialect.PostgreSQLDialect
+            hibernate.dialect: org.hibernate.dialect.PostgreSQLDialect
+            hibernate.format_sql: true
+            hibernate.generate_statistics: false
+    kafka:
+        bootstrap-servers: ${KAFKA_BOOTSTRAP_SERVER}
+        security:
+            protocol: PLAINTEXT
+        consumer:
+            group-id: ${KAFKA_CONSUMER_GROUP_ID:cps-temporal-group}
+            # Configures the Spring Kafka ErrorHandlingDeserializer that delegates to the 'real' deserializers
+            # See https://docs.spring.io/spring-kafka/docs/2.5.11.RELEASE/reference/html/#error-handling-deserializer
+            # and https://www.confluent.io/blog/spring-kafka-can-your-kafka-consumers-handle-a-poison-pill/
+            key-deserializer: org.springframework.kafka.support.serializer.ErrorHandlingDeserializer
+            value-deserializer: org.springframework.kafka.support.serializer.ErrorHandlingDeserializer
+            properties:
+                spring.deserializer.key.delegate.class: org.apache.kafka.common.serialization.StringDeserializer
+                spring.deserializer.value.delegate.class: org.springframework.kafka.support.serializer.JsonDeserializer
+                spring.json.value.default.type: org.onap.cps.event.model.CpsDataUpdatedEvent
 
-logging:
-    level:
-        org:
-            springframework: INFO
+app:
+    listener:
+        data-updated:
+            topic: ${CPS_CHANGE_EVENT_TOPIC:cps.cfg-state-events}
diff --git a/src/main/resources/logback.xml b/src/main/resources/logback.xml
new file mode 100644
index 0000000..a75b7aa
--- /dev/null
+++ b/src/main/resources/logback.xml
@@ -0,0 +1,43 @@
+<!--
+  ============LICENSE_START=======================================================
+  Copyright (c) 2021 Bell Canada.
+  ================================================================================
+  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.
+  ============LICENSE_END=========================================================
+-->
+
+<configuration>
+
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d - %highlight(%-5level) [%-20.20thread] %cyan(%logger{36}) - %msg%n</pattern>
+        </encoder>
+    </appender>
+
+    <!-- Logger for cps classes -->
+    <logger name="org.onap.cps" level="info"/>
+
+    <!-- Logger for sql statements. Set to info to disable, debug to enable -->
+    <logger name="org.hibernate.SQL" level="info"/>
+
+    <!-- Logger for sql bindings. Set to info to disable, to trace to enable -->
+    <logger name="org.hibernate.type.descriptor.sql.BasicBinder" level="info"/>
+
+    <!-- Logger for hibernate statistics. Set to warn to disable, to info to enable -->
+    <logger name="org.hibernate.engine.internal.StatisticalLoggingSessionEventListener" level="warn"/>
+
+    <root level="info">
+        <appender-ref ref="STDOUT" />
+    </root>
+
+</configuration>