NCMP : Handle non-existing and non-ready cm handles

- Modified data operation schema to contains cm handle as steing and
  response content field name as result.
- Added a new common cloud event builder for NCMP to create an event.
- Added data operation event creater that uses cloud event builder to
  create a cloud event.
- Introduced a new method onto json object mapper to convert json object
  to bytes.
- Modified EventDateTimeFormatter and added a new method to convert date timestamp into offsetdateTime.
- Added a new code into ResourceRequestUtil to identify non-ready cm
  handle and non-existing cm handle and later publish it as cloud event
  to tha client given topic.
- Introduced CpsApplicationContext to get spring mannaged bean into non
  spring managed java object.

Issue-ID: CPS-1583, CPS-1614

Signed-off-by: sourabh_sourabh <sourabh.sourabh@est.tech>
Change-Id: I24a39d2cb2c54dea25cd2f17e7748e21cd83a088
Signed-off-by: sourabh_sourabh <sourabh.sourabh@est.tech>

7 files changed, 183 insertions, 28 deletions

diff --git a/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/async/NcmpAsyncDataOperationEventConsumerSpec.groovy b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/async/NcmpAsyncDataOperationEventConsumerSpec.groovy
index 7f8469aafc..6353288713 100644
--- a/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/async/NcmpAsyncDataOperationEventConsumerSpec.groovy
+++ b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/async/NcmpAsyncDataOperationEventConsumerSpec.groovy
@@ -92,7 +92,7 @@ class NcmpAsyncDataOperationEventConsumerSpec extends MessagingBaseSpec {
             response.operationId == 'some-operation-id'
             response.statusCode == 'any-success-status-code'
             response.statusMessage == 'Successfully applied changes'
-            response.responseContent as String == '[some-key:some-value]'
+            response.result as String == '[some-key:some-value]'
     }
 
     def 'Filter an event with type #eventType'() {
@@ -110,7 +110,7 @@ class NcmpAsyncDataOperationEventConsumerSpec extends MessagingBaseSpec {
 
     def createConsumerRecord(eventTypeAsString) {
         def jsonData = TestUtils.getResourceFileContent('dataOperationEvent.json')
-        def testEventSentAsBytes = objectMapper.writeValueAsBytes(jsonObjectMapper.convertJsonString(jsonData, DataOperationEvent.class))
+        def testEventSentAsBytes = jsonObjectMapper.asJsonBytes(jsonObjectMapper.convertJsonString(jsonData, DataOperationEvent.class))
 
         CloudEvent cloudEvent = getCloudEvent(eventTypeAsString, testEventSentAsBytes)
 
diff --git a/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/events/EventPublisherSpec.groovy b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/events/EventPublisherSpec.groovy
new file mode 100644
index 0000000000..59a43caf9e
--- /dev/null
+++ b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/events/EventPublisherSpec.groovy
@@ -0,0 +1,86 @@
+/*
+ * ============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=========================================================
+ */
+
+package org.onap.cps.ncmp.api.impl.events
+
+import ch.qos.logback.classic.Level
+import ch.qos.logback.classic.Logger
+import ch.qos.logback.core.read.ListAppender
+import org.apache.kafka.clients.producer.ProducerRecord
+import org.apache.kafka.clients.producer.RecordMetadata
+import org.apache.kafka.common.TopicPartition
+import org.onap.cps.ncmp.init.SubscriptionModelLoader
+import org.slf4j.LoggerFactory
+import org.springframework.kafka.support.SendResult
+import spock.lang.Specification
+
+class EventPublisherSpec extends Specification {
+
+    def objectUnderTest = new EventsPublisher(null, null)
+    def logger = (Logger) LoggerFactory.getLogger(objectUnderTest.getClass())
+    def loggingListAppender
+
+    void setup() {
+        logger.setLevel(Level.DEBUG)
+        loggingListAppender = new ListAppender()
+        logger.addAppender(loggingListAppender)
+        loggingListAppender.start()
+    }
+
+    void cleanup() {
+        ((Logger) LoggerFactory.getLogger(SubscriptionModelLoader.class)).detachAndStopAllAppenders()
+    }
+
+    def 'Callback handling on success.'() {
+        given: 'a send result'
+            def producerRecord = new ProducerRecord('topic-1', 'my value')
+            def topicPartition = new TopicPartition('topic-2', 0)
+            def recordMetadata = new RecordMetadata(topicPartition, 0, 0, 0, 0, 0)
+            def sendResult = new SendResult(producerRecord, recordMetadata)
+        when: 'the callback handler processes success'
+            def callbackHandler = objectUnderTest.handleCallback('topic-3')
+            callbackHandler.onSuccess(sendResult)
+        then: 'an event is logged with level DEBUG'
+            def loggingEvent = getLoggingEvent()
+            loggingEvent.level == Level.DEBUG
+        and: 'it contains the topic (from the record metadata) and the "value" (from the producer record)'
+            loggingEvent.formattedMessage.contains('topic-2')
+            loggingEvent.formattedMessage.contains('my value')
+    }
+
+
+    def 'Callback handling on failure.'() {
+        when: 'the callback handler processes a failure'
+            def callbackHandler = objectUnderTest.handleCallback('my topic')
+            callbackHandler.onFailure(new Exception('my exception'))
+        then: 'an event is logged with level ERROR'
+            def loggingEvent = getLoggingEvent()
+            loggingEvent.level == Level.ERROR
+        and: 'it contains the topic and exception message'
+            loggingEvent.formattedMessage.contains('my topic')
+            loggingEvent.formattedMessage.contains('my exception')
+    }
+
+    def getLoggingEvent() {
+        return loggingListAppender.list[0]
+    }
+
+
+}
diff --git a/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/events/avc/AvcEventConsumerSpec.groovy b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/events/avc/AvcEventConsumerSpec.groovy
index 5cc70e2809..22852bea43 100644
--- a/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/events/avc/AvcEventConsumerSpec.groovy
+++ b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/events/avc/AvcEventConsumerSpec.groovy
@@ -55,9 +55,6 @@ class AvcEventConsumerSpec extends MessagingBaseSpec {
     @Autowired
     JsonObjectMapper jsonObjectMapper
 
-    @Autowired
-    ObjectMapper objectMapper
-
     def cloudEventKafkaConsumer = new KafkaConsumer<>(eventConsumerConfigProperties('ncmp-group', CloudEventDeserializer))
 
     def 'Consume and forward valid message'() {
@@ -69,7 +66,7 @@ class AvcEventConsumerSpec extends MessagingBaseSpec {
             def jsonData = TestUtils.getResourceFileContent('sampleAvcInputEvent.json')
             def testEventSent = jsonObjectMapper.convertJsonString(jsonData, AvcEvent.class)
             def testCloudEventSent = CloudEventBuilder.v1()
-                .withData(objectMapper.writeValueAsBytes(testEventSent))
+                .withData(jsonObjectMapper.asJsonBytes(testEventSent))
                 .withId('sample-eventid')
                 .withType('sample-test-type')
                 .withSource(URI.create('sample-test-source'))
diff --git a/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/operations/DmiDataOperationsSpec.groovy b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/operations/DmiDataOperationsSpec.groovy
index c7ee4e0745..59e62e34d0 100644
--- a/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/operations/DmiDataOperationsSpec.groovy
+++ b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/operations/DmiDataOperationsSpec.groovy
@@ -23,8 +23,11 @@ package org.onap.cps.ncmp.api.impl.operations
 
 import com.fasterxml.jackson.databind.ObjectMapper
 import org.onap.cps.ncmp.api.impl.config.NcmpConfiguration
+import org.onap.cps.ncmp.api.impl.events.EventsPublisher
 import org.onap.cps.ncmp.api.impl.utils.DmiServiceUrlBuilder
+import org.onap.cps.ncmp.api.impl.utils.context.CpsApplicationContext
 import org.onap.cps.ncmp.api.models.DataOperationRequest
+import org.onap.cps.ncmp.event.model.NcmpAsyncRequestResponseEvent
 import org.onap.cps.ncmp.utils.TestUtils
 import org.onap.cps.utils.JsonObjectMapper
 import org.spockframework.spring.SpringBean
@@ -42,7 +45,7 @@ import static org.onap.cps.ncmp.api.impl.operations.OperationType.READ
 import static org.onap.cps.ncmp.api.impl.operations.OperationType.UPDATE
 
 @SpringBootTest
-@ContextConfiguration(classes = [NcmpConfiguration.DmiProperties, DmiDataOperations])
+@ContextConfiguration(classes = [EventsPublisher, CpsApplicationContext, NcmpConfiguration.DmiProperties, DmiDataOperations])
 class DmiDataOperationsSpec extends DmiOperationsBaseSpec {
 
     @SpringBean
@@ -59,6 +62,9 @@ class DmiDataOperationsSpec extends DmiOperationsBaseSpec {
     @Autowired
     DmiDataOperations objectUnderTest
 
+    @SpringBean
+    EventsPublisher eventsPublisher = Stub()
+
     def 'call get resource data for #expectedDatastoreInUrl from DMI without topic #scenario.'() {
         given: 'a cm handle for #cmHandleId'
             mockYangModelCmHandleRetrieval(dmiProperties)
diff --git a/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/utils/context/CpsApplicationContextSpec.groovy b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/utils/context/CpsApplicationContextSpec.groovy
new file mode 100644
index 0000000000..b7fa449251
--- /dev/null
+++ b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/utils/context/CpsApplicationContextSpec.groovy
@@ -0,0 +1,19 @@
+package org.onap.cps.ncmp.api.impl.utils.context
+
+import com.fasterxml.jackson.databind.ObjectMapper
+import org.onap.cps.utils.JsonObjectMapper
+import org.springframework.boot.test.context.SpringBootTest
+import org.springframework.test.context.ContextConfiguration
+import spock.lang.Specification;
+
+@SpringBootTest(classes = [ObjectMapper, JsonObjectMapper])
+@ContextConfiguration(classes = [CpsApplicationContext.class])
+class CpsApplicationContextSpec extends Specification {
+
+    def 'Verify if cps application context contains a requested bean.'() {
+        when: 'cps bean is requested from application context'
+            def jsonObjectMapper = CpsApplicationContext.getCpsBean(JsonObjectMapper.class)
+        then: 'requested bean of JsonObjectMapper is not null'
+            assert jsonObjectMapper != null
+    }
+}
diff --git a/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/utils/DataOperationRequestUtilsSpec.groovy b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/utils/data/operation/ResourceDataOperationRequestUtilsSpec.groovy
index 334b455ef7..401254f546 100644
--- a/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/utils/DataOperationRequestUtilsSpec.groovy
+++ b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/api/impl/utils/data/operation/ResourceDataOperationRequestUtilsSpec.groovy
@@ -18,23 +18,46 @@
  *  ============LICENSE_END=========================================================
  */
 
-package org.onap.cps.ncmp.api.impl.utils
+package org.onap.cps.ncmp.api.impl.utils.data.operation
 
 import com.fasterxml.jackson.databind.ObjectMapper
+import io.cloudevents.CloudEvent
+import io.cloudevents.core.CloudEventUtils
+import io.cloudevents.jackson.PojoCloudEventDataMapper
+import io.cloudevents.kafka.CloudEventDeserializer
+import io.cloudevents.kafka.impl.KafkaHeaders
+import org.apache.kafka.clients.consumer.KafkaConsumer
+import org.onap.cps.ncmp.api.impl.events.EventsPublisher
+import org.onap.cps.ncmp.api.impl.utils.context.CpsApplicationContext
 import org.onap.cps.ncmp.api.impl.yangmodels.YangModelCmHandle
 import org.onap.cps.ncmp.api.inventory.CmHandleState
 import org.onap.cps.ncmp.api.inventory.CompositeStateBuilder
+import org.onap.cps.ncmp.api.kafka.MessagingBaseSpec
 import org.onap.cps.ncmp.api.models.DataOperationRequest
+import org.onap.cps.ncmp.events.async1_0_0.DataOperationEvent
 import org.onap.cps.ncmp.utils.TestUtils
 import org.onap.cps.utils.JsonObjectMapper
 import org.spockframework.spring.SpringBean
-import spock.lang.Specification
+import org.springframework.beans.factory.annotation.Autowired
+import org.springframework.test.context.ContextConfiguration
+import java.time.Duration
 
-class DataOperationRequestUtilsSpec extends Specification {
+@ContextConfiguration(classes = [EventsPublisher, CpsApplicationContext, ObjectMapper])
+class ResourceDataOperationRequestUtilsSpec extends MessagingBaseSpec {
+
+    def cloudEventKafkaConsumer = new KafkaConsumer<>(eventConsumerConfigProperties('test', CloudEventDeserializer))
+    def static clientTopic = 'my-topic-name'
+    def static dataOperationType = 'org.onap.cps.ncmp.events.async1_0_0.DataOperationEvent'
 
     @SpringBean
     JsonObjectMapper jsonObjectMapper = new JsonObjectMapper(new ObjectMapper())
 
+    @SpringBean
+    EventsPublisher eventPublisher = new EventsPublisher<CloudEvent>(legacyEventKafkaTemplate, cloudEventKafkaTemplate)
+
+    @Autowired
+    ObjectMapper objectMapper
+
     def 'Process per data operation request with #serviceName.'() {
         given: 'data operation request with 3 operations'
             def dataOperationRequestJsonData = TestUtils.getResourceFileContent('dataOperationRequest.json')
@@ -42,7 +65,7 @@ class DataOperationRequestUtilsSpec extends Specification {
         and: '4 known cm handles: ch1-dmi1, ch2-dmi1, ch3-dmi2, ch4-dmi2'
             def yangModelCmHandles = getYangModelCmHandles()
         when: 'data operation request is processed'
-            def operationsOutPerDmiServiceName = ResourceDataOperationRequestUtils.processPerDefinitionInDataOperationsRequest(dataOperationRequest, yangModelCmHandles)
+            def operationsOutPerDmiServiceName = ResourceDataOperationRequestUtils.processPerDefinitionInDataOperationsRequest(clientTopic,'request-id', dataOperationRequest, yangModelCmHandles)
         and: 'converted to a json node'
             def dmiDataOperationRequestBody = jsonObjectMapper.asJsonString(operationsOutPerDmiServiceName.get(serviceName))
             def dmiDataOperationRequestBodyAsJsonNode = jsonObjectMapper.convertToJsonNode(dmiDataOperationRequestBody).get(operationIndex)
@@ -65,9 +88,37 @@ class DataOperationRequestUtilsSpec extends Specification {
             'dmi2'      | 2              || 'operational-15'    | 'ncmp-datastore:passthrough-operational' | ['ch4-dmi2']
     }
 
+    def 'Process per data operation request with non-ready, non-existing cm handle and publish event to client specified topic'() {
+        given: 'consumer subscribing to client topic'
+            cloudEventKafkaConsumer.subscribe([clientTopic])
+        and: 'data operation request having non-ready and non-existing cm handle ids'
+            def dataOperationRequestJsonData = TestUtils.getResourceFileContent('dataOperationRequest.json')
+            def dataOperationRequest = jsonObjectMapper.convertJsonString(dataOperationRequestJsonData, DataOperationRequest.class)
+        when: 'data operation request is processed'
+            ResourceDataOperationRequestUtils.processPerDefinitionInDataOperationsRequest(clientTopic, 'request-id', dataOperationRequest, yangModelCmHandles)
+        and: 'subscribed client specified topic is polled and first record is selected'
+            def consumerRecordOut = cloudEventKafkaConsumer.poll(Duration.ofMillis(1500))[0]
+        then: 'verify cloud compliant headers'
+            def consumerRecordOutHeaders = consumerRecordOut.headers()
+            assert KafkaHeaders.getParsedKafkaHeader(consumerRecordOutHeaders, 'ce_id') != null
+            assert KafkaHeaders.getParsedKafkaHeader(consumerRecordOutHeaders, 'ce_type') == dataOperationType
+        and: 'verify that extension is included into header'
+            assert KafkaHeaders.getParsedKafkaHeader(consumerRecordOutHeaders, 'ce_correlationid') == 'request-id'
+            assert KafkaHeaders.getParsedKafkaHeader(consumerRecordOutHeaders, 'ce_destination') == clientTopic
+        and: 'map consumer record to expected event type'
+            def dataOperationResponseEvent = CloudEventUtils.mapData(consumerRecordOut.value(),
+                    PojoCloudEventDataMapper.from(objectMapper, DataOperationEvent.class)).getValue()
+        and: 'data operation response event response size is 3'
+            dataOperationResponseEvent.data.responses.size() == 3
+        and: 'verify published response data as json string'
+            jsonObjectMapper.asJsonString(dataOperationResponseEvent.data.responses)
+                    == '[{"operationId":"operational-14","ids":["unknown-cm-handle"],"statusCode":"100","statusMessage":"cm handle id(s) not found"},{"operationId":"operational-14","ids":["non-ready-cm handle"],"statusCode":"101","statusMessage":"cm handle(s) not ready"},{"operationId":"running-12","ids":["non-ready-cm handle"],"statusCode":"101","statusMessage":"cm handle(s) not ready"}]'
+    }
+
     static def getYangModelCmHandles() {
         def dmiProperties = [new YangModelCmHandle.Property('prop', 'some DMI property')]
         def readyState = new CompositeStateBuilder().withCmHandleState(CmHandleState.READY).withLastUpdatedTimeNow().build()
+        def advisedState = new CompositeStateBuilder().withCmHandleState(CmHandleState.ADVISED).withLastUpdatedTimeNow().build()
         return [new YangModelCmHandle(id: 'ch1-dmi1', dmiServiceName: 'dmi1', dmiProperties: dmiProperties, compositeState: readyState),
                 new YangModelCmHandle(id: 'ch2-dmi1', dmiServiceName: 'dmi1', dmiProperties: dmiProperties, compositeState: readyState),
                 new YangModelCmHandle(id: 'ch6-dmi1', dmiServiceName: 'dmi1', dmiProperties: dmiProperties, compositeState: readyState),
@@ -75,6 +126,7 @@ class DataOperationRequestUtilsSpec extends Specification {
                 new YangModelCmHandle(id: 'ch3-dmi2', dmiServiceName: 'dmi2', dmiProperties: dmiProperties, compositeState: readyState),
                 new YangModelCmHandle(id: 'ch4-dmi2', dmiServiceName: 'dmi2', dmiProperties: dmiProperties, compositeState: readyState),
                 new YangModelCmHandle(id: 'ch7-dmi2', dmiServiceName: 'dmi2', dmiProperties: dmiProperties, compositeState: readyState),
+                new YangModelCmHandle(id: 'non-ready-cm handle', dmiServiceName: 'dmi2', dmiProperties: dmiProperties, compositeState: advisedState)
         ]
     }
 }
diff --git a/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/init/SubscriptionModelLoaderSpec.groovy b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/init/SubscriptionModelLoaderSpec.groovy
index a14a0f286c..b4e7813db9 100644
--- a/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/init/SubscriptionModelLoaderSpec.groovy
+++ b/cps-ncmp-service/src/test/groovy/org/onap/cps/ncmp/init/SubscriptionModelLoaderSpec.groovy
@@ -23,8 +23,6 @@ package org.onap.cps.ncmp.init
 import ch.qos.logback.classic.Level
 import ch.qos.logback.classic.Logger
 import ch.qos.logback.core.read.ListAppender
-import org.junit.jupiter.api.AfterEach
-import org.junit.jupiter.api.BeforeEach
 import org.onap.cps.api.CpsAdminService
 import org.onap.cps.api.CpsDataService
 import org.onap.cps.api.CpsModuleService
@@ -53,22 +51,19 @@ class SubscriptionModelLoaderSpec extends Specification {
     def applicationReadyEvent = new ApplicationReadyEvent(new SpringApplication(), null, applicationContext, null)
 
     def yangResourceToContentMap
-    def logger
-    def appender
+    def logger = (Logger) LoggerFactory.getLogger(objectUnderTest.getClass())
+    def loggingListAppender
 
-    @BeforeEach
     void setup() {
         yangResourceToContentMap = objectUnderTest.createYangResourceToContentMap()
-        logger = (Logger) LoggerFactory.getLogger(objectUnderTest.getClass())
-        appender = new ListAppender()
         logger.setLevel(Level.DEBUG)
-        appender.start()
-        logger.addAppender(appender)
+        loggingListAppender = new ListAppender()
+        logger.addAppender(loggingListAppender)
+        loggingListAppender.start()
         applicationContext.refresh()
     }
 
-    @AfterEach
-    void teardown() {
+    void cleanup() {
         ((Logger) LoggerFactory.getLogger(SubscriptionModelLoader.class)).detachAndStopAllAppenders()
         applicationContext.close()
     }
@@ -123,7 +118,7 @@ class SubscriptionModelLoaderSpec extends Specification {
         and: 'the data service to create a top level datanode was not called'
             0 * mockCpsDataService.saveData(*_)
         and: 'the log message contains the correct exception message'
-            def logs = appender.list.toString()
+            def logs = loggingListAppender.list.toString()
             assert logs.contains("Retrieval of NCMP dataspace fails")
     }
 
@@ -168,7 +163,7 @@ class SubscriptionModelLoaderSpec extends Specification {
         when: 'the method to onboard model is called'
             objectUnderTest.onboardSubscriptionModel(yangResourceToContentMap)
         then: 'the log message contains the correct exception message'
-            def debugMessage = appender.list[0].toString()
+            def debugMessage = loggingListAppender.list[0].toString()
             assert debugMessage.contains("Creating schema set failed")
         and: 'exception is thrown'
             thrown(NcmpStartUpException)
@@ -183,7 +178,7 @@ class SubscriptionModelLoaderSpec extends Specification {
         then: 'no exception thrown'
             noExceptionThrown()
         and: 'the log message contains the correct exception message'
-            def infoMessage = appender.list[0].toString()
+            def infoMessage = loggingListAppender.list[0].toString()
             assert infoMessage.contains("already exists")
     }
 
@@ -194,7 +189,7 @@ class SubscriptionModelLoaderSpec extends Specification {
         when: 'the method to onboard model is called'
             objectUnderTest.onboardSubscriptionModel(yangResourceToContentMap)
         then: 'the log message contains the correct exception message'
-            def debugMessage = appender.list[0].toString()
+            def debugMessage = loggingListAppender.list[0].toString()
             assert debugMessage.contains("Schema Set not found")
         and: 'exception is thrown'
             thrown(NcmpStartUpException)
@@ -209,7 +204,7 @@ class SubscriptionModelLoaderSpec extends Specification {
         then: 'no exception thrown'
             noExceptionThrown()
         and: 'the log message contains the correct exception message'
-            def infoMessage = appender.list[0].toString()
+            def infoMessage = loggingListAppender.list[0].toString()
             assert infoMessage.contains("already exists")
     }
 
@@ -220,7 +215,7 @@ class SubscriptionModelLoaderSpec extends Specification {
         when: 'the method to onboard model is called'
             objectUnderTest.onboardSubscriptionModel(yangResourceToContentMap)
         then: 'the log message contains the correct exception message'
-            def debugMessage = appender.list[0].toString()
+            def debugMessage = loggingListAppender.list[0].toString()
             assert debugMessage.contains("Creating data node for subscription model failed: Invalid JSON")
         and: 'exception is thrown'
             thrown(NcmpStartUpException)