Add sample tests that runs DMaap MR in container

Testcontainers framework can be used to test integration with Dmaap MR

Change-Id: I5ef7b792226da09eb7cc0ea441f528e236e41053
Issue-ID: DCAEGEN2-1512
Signed-off-by: Izabela Zawadzka <izabela.zawadzka@nokia.com>

2 files changed, 218 insertions, 0 deletions

diff --git a/rest-services/dmaap-client/src/test/java/org/onap/dcaegen2/services/sdk/rest/services/dmaap/client/api/DockerComposeNotFoundException.java b/rest-services/dmaap-client/src/test/java/org/onap/dcaegen2/services/sdk/rest/services/dmaap/client/api/DockerComposeNotFoundException.java
new file mode 100644
index 00000000..727f17ac
--- /dev/null
+++ b/rest-services/dmaap-client/src/test/java/org/onap/dcaegen2/services/sdk/rest/services/dmaap/client/api/DockerComposeNotFoundException.java
@@ -0,0 +1,27 @@
+/*
+ * ============LICENSE_START====================================
+ * DCAEGEN2-SERVICES-SDK
+ * =========================================================
+ * Copyright (C) 2019 Nokia. All rights reserved.
+ * =========================================================
+ * 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=====================================
+ */
+
+package org.onap.dcaegen2.services.sdk.rest.services.dmaap.client.api;
+
+class DockerComposeNotFoundException extends RuntimeException{
+    DockerComposeNotFoundException(String s){
+        super(s);
+    }
+}
diff --git a/rest-services/dmaap-client/src/test/java/org/onap/dcaegen2/services/sdk/rest/services/dmaap/client/api/MessageRouterSubscriberCIT.java b/rest-services/dmaap-client/src/test/java/org/onap/dcaegen2/services/sdk/rest/services/dmaap/client/api/MessageRouterSubscriberCIT.java
new file mode 100644
index 00000000..5b113503
--- /dev/null
+++ b/rest-services/dmaap-client/src/test/java/org/onap/dcaegen2/services/sdk/rest/services/dmaap/client/api/MessageRouterSubscriberCIT.java
@@ -0,0 +1,191 @@
+/*
+ * ============LICENSE_START====================================
+ * DCAEGEN2-SERVICES-SDK
+ * =========================================================
+ * Copyright (C) 2019 Nokia. All rights reserved.
+ * =========================================================
+ * 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=====================================
+ */
+
+package org.onap.dcaegen2.services.sdk.rest.services.dmaap.client.api;
+
+import com.google.gson.Gson;
+import com.google.gson.JsonArray;
+import com.google.gson.JsonParser;
+import com.google.gson.JsonPrimitive;
+import java.io.File;
+import java.net.URL;
+import java.time.Duration;
+import java.util.Arrays;
+import java.util.List;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+import org.onap.dcaegen2.services.sdk.model.streams.dmaap.ImmutableMessageRouterSink;
+import org.onap.dcaegen2.services.sdk.model.streams.dmaap.ImmutableMessageRouterSource;
+import org.onap.dcaegen2.services.sdk.model.streams.dmaap.MessageRouterSink;
+import org.onap.dcaegen2.services.sdk.rest.services.dmaap.client.model.ImmutableMessageRouterPublishRequest;
+import org.onap.dcaegen2.services.sdk.rest.services.dmaap.client.model.ImmutableMessageRouterSubscribeRequest;
+import org.onap.dcaegen2.services.sdk.rest.services.dmaap.client.model.ImmutableMessageRouterSubscribeResponse;
+import org.onap.dcaegen2.services.sdk.rest.services.dmaap.client.model.MessageRouterPublishRequest;
+import org.onap.dcaegen2.services.sdk.rest.services.dmaap.client.model.MessageRouterSubscribeRequest;
+import org.onap.dcaegen2.services.sdk.rest.services.dmaap.client.model.MessageRouterSubscribeResponse;
+import org.onap.dcaegen2.services.sdk.rest.services.dmaap.client.model.config.MessageRouterPublisherConfig;
+import org.onap.dcaegen2.services.sdk.rest.services.dmaap.client.model.config.MessageRouterSubscriberConfig;
+import org.testcontainers.containers.DockerComposeContainer;
+import org.testcontainers.junit.jupiter.Container;
+import org.testcontainers.junit.jupiter.Testcontainers;
+import reactor.core.publisher.Flux;
+import reactor.core.publisher.Mono;
+import reactor.test.StepVerifier;
+
+@Disabled("Disabled until fix messages formatting in MessageRouterPublisher::put ")
+@Testcontainers
+class MessageRouterSubscriberCIT {
+    private static final Gson gson = new Gson();
+    private static final Duration TIMEOUT = Duration.ofSeconds(10);
+    private static final int DMAAP_SERVICE_EXPOSED_PORT = 3904;
+    private static final List<String> messageBatchItems = Arrays.asList("I", "like", "pizza");
+    private static final Flux<JsonPrimitive> messageBatch = Flux.fromIterable(messageBatchItems)
+            .map(JsonPrimitive::new);
+    private static final String CONSUMER_GROUP = "group1";
+    private static final String CONSUMER_ID = "consumer200";
+    private static final String DMAAP_SERVICE_NAME = "dmaap";
+    private static final String MR_COMPOSE_RESOURCE_NAME = "dmaap-msg-router/message-router-compose.yml";
+    private static final String DOCKER_COMPOSE_FILE_PATH = getDockerComposeFilePath(
+            MR_COMPOSE_RESOURCE_NAME);
+    private static final String DMAAP_404_ERROR_RESPONSE_FORMAT = "404 Not Found\n" +
+            "{" +
+            "\"mrstatus\":3001," +
+            "\"helpURL\":\"http://onap.readthedocs.io\"," +
+            "\"message\":\"No such topic exists.-[%s]\"," +
+            "\"status\":404" +
+            "}";
+
+    @Container
+    private static final DockerComposeContainer CONTAINER = new DockerComposeContainer(
+            new File(DOCKER_COMPOSE_FILE_PATH))
+            .withExposedService(DMAAP_SERVICE_NAME, DMAAP_SERVICE_EXPOSED_PORT);
+
+    private static String EVENTS_PATH;
+
+    private MessageRouterPublisher publisher = DmaapClientFactory
+            .createMessageRouterPublisher(MessageRouterPublisherConfig.createDefault());
+    private MessageRouterSubscriber sut = DmaapClientFactory
+            .createMessageRouterSubscriber(MessageRouterSubscriberConfig.createDefault());
+
+
+    @BeforeAll
+    static void setUp() {
+        EVENTS_PATH = String.format("http://%s:%d/events",
+                CONTAINER.getServiceHost(DMAAP_SERVICE_NAME, DMAAP_SERVICE_EXPOSED_PORT),
+                CONTAINER.getServicePort(DMAAP_SERVICE_NAME, DMAAP_SERVICE_EXPOSED_PORT));
+    }
+
+    @Test
+    void subscriber_shouldHandleNoSuchTopicException() {
+        //given
+        final String topic = "newTopic";
+        final MessageRouterSubscribeRequest mrSubscribeRequest = createMRSubscribeRequest(topic);
+        final String expectedFailReason = String.format(DMAAP_404_ERROR_RESPONSE_FORMAT, topic);
+        final MessageRouterSubscribeResponse expectedResponse = ImmutableMessageRouterSubscribeResponse
+                .builder()
+                .failReason(expectedFailReason)
+                .build();
+
+        //when
+        Mono<MessageRouterSubscribeResponse> response = sut
+                .get(mrSubscribeRequest);
+
+        //then
+        StepVerifier.create(response)
+                .expectNext(expectedResponse)
+                .expectComplete()
+                .verify(TIMEOUT);
+    }
+
+    @Test
+    void subscriber_shouldGetCorrectResponse() {
+        //given
+        final String topic = "TOPIC";
+        final MessageRouterPublishRequest publishRequest = createMRPublishRequest(topic, "text/plain");
+        final MessageRouterSubscribeRequest subscribeRequest = createMRSubscribeRequest(topic);
+        final JsonArray expectedItems = getAsJsonArray(messageBatchItems);
+        final ImmutableMessageRouterSubscribeResponse expectedResponse = ImmutableMessageRouterSubscribeResponse
+                .builder()
+                .items(expectedItems)
+                .build();
+
+        //when
+        registerTopic(publishRequest, subscribeRequest);
+        Mono<MessageRouterSubscribeResponse> response = publisher
+                .put(publishRequest, messageBatch)
+                .then(sut.get(subscribeRequest));
+
+        //then
+        StepVerifier.create(response)
+                .expectNext(expectedResponse)
+                .expectComplete()
+                .verify();
+    }
+
+    private static String getDockerComposeFilePath(String resourceName){
+        URL resource = MessageRouterSubscriberCIT.class.getClassLoader()
+                .getResource(resourceName);
+
+        if(resource != null) return resource.getFile();
+        else throw new DockerComposeNotFoundException(String
+                .format("File %s does not exist", resourceName));
+    }
+
+    private static MessageRouterPublishRequest createMRPublishRequest(String topic,
+            String contentType) {
+        MessageRouterSink sinkDefinition = ImmutableMessageRouterSink.builder()
+                .name("the topic")
+                .topicUrl(String.format("%s/%s", EVENTS_PATH, topic))
+                .build();
+
+        return ImmutableMessageRouterPublishRequest.builder()
+                .sinkDefinition(sinkDefinition)
+                .contentType(contentType)
+                .build();
+    }
+
+    private MessageRouterSubscribeRequest createMRSubscribeRequest(String topic) {
+        ImmutableMessageRouterSource sourceDefinition = ImmutableMessageRouterSource.builder()
+                .name("the topic")
+                .topicUrl(String.format("%s/%s", EVENTS_PATH, topic))
+                .build();
+
+        return ImmutableMessageRouterSubscribeRequest
+                .builder()
+                .sourceDefinition(sourceDefinition)
+                .consumerGroup(CONSUMER_GROUP)
+                .consumerId(CONSUMER_ID)
+                .build();
+    }
+
+    private void registerTopic(MessageRouterPublishRequest publishRequest,
+            MessageRouterSubscribeRequest subscribeRequest) {
+        Flux<JsonPrimitive> sampleMessage = Flux.just("sample message").map(JsonPrimitive::new);
+
+        publisher.put(publishRequest, sampleMessage).blockLast();
+        sut.get(subscribeRequest).block();
+    }
+
+    private JsonArray getAsJsonArray(List<String> list) {
+        String listsJsonString = gson.toJson(list);
+        return new JsonParser().parse(listsJsonString).getAsJsonArray();
+    }
+}