Adding DistributeTraffic LCM API

This commit contains code modifications for APPC to support DistributeTraffic LCM API. Tests has been implemented for new service.

Change-Id: I853120eced93928268074cf89dd62fb89fea9ff8
Issue-ID: APPC-1169
Signed-off-by: Tomek Osinski <tomasz.osinski2@orange.com>

2 files changed, 126 insertions, 0 deletions

diff --git a/appc-provider/appc-provider-bundle/src/main/java/org/onap/appc/provider/AppcProviderLcm.java b/appc-provider/appc-provider-bundle/src/main/java/org/onap/appc/provider/AppcProviderLcm.java
index 410a9ea1c..ff1195127 100644
--- a/appc-provider/appc-provider-bundle/src/main/java/org/onap/appc/provider/AppcProviderLcm.java
+++ b/appc-provider/appc-provider-bundle/src/main/java/org/onap/appc/provider/AppcProviderLcm.java
@@ -5,6 +5,8 @@
  * Copyright (C) 2017-2018 AT&T Intellectual Property. All rights reserved.
  * ================================================================================
  * Copyright (C) 2017 Amdocs
+ * ================================================================================
+ * Modifications Copyright (C) 2018 Orange
  * =============================================================================
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -43,6 +45,7 @@ import org.onap.appc.provider.lcm.service.ResumeTrafficService;
 import org.onap.appc.provider.lcm.service.UpgradeService;
 import org.onap.appc.provider.lcm.service.VolumeService;
 import org.onap.appc.provider.lcm.service.ConfigScaleOutService;
+import org.onap.appc.provider.lcm.service.DistributeTrafficService;
 import org.onap.appc.provider.lcm.util.RequestInputBuilder;
 import org.onap.appc.provider.lcm.util.ValidationService;
 import org.onap.appc.requesthandler.objects.RequestHandlerInput;
@@ -488,6 +491,15 @@ public class AppcProviderLcm extends AbstractBaseUtils implements AutoCloseable,
     }
 
     @Override
+    public Future<RpcResult<DistributeTrafficOutput>> distributeTraffic(DistributeTrafficInput input) {
+        logger.debug(String.format("LCM DistributeTraffic, received input: %s", input.toString()));
+        DistributeTrafficOutputBuilder outputBuilder = new DistributeTrafficService().process(input);
+        RpcResult<DistributeTrafficOutput> result =
+                RpcResultBuilder.<DistributeTrafficOutput>status(true).withResult(outputBuilder.build()).build();
+        return Futures.immediateFuture(result);
+    }
+
+    @Override
     public Future<RpcResult<UpgradePreCheckOutput>> upgradePreCheck(UpgradePreCheckInput input) {
         logger.debug(String.format("LCM upgradeprecheck received input: %s", input.toString()));
         UpgradePreCheckOutputBuilder outputBuilder = new UpgradeService("upgradePre").upgradePreCheck(input);
diff --git a/appc-provider/appc-provider-bundle/src/main/java/org/onap/appc/provider/lcm/service/DistributeTrafficService.java b/appc-provider/appc-provider-bundle/src/main/java/org/onap/appc/provider/lcm/service/DistributeTrafficService.java
new file mode 100644
index 000000000..367135265
--- /dev/null
+++ b/appc-provider/appc-provider-bundle/src/main/java/org/onap/appc/provider/lcm/service/DistributeTrafficService.java
@@ -0,0 +1,114 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP : APPC
+ * ================================================================================
+ * Copyright (C) 2018 Orange
+ * =============================================================================
+ * 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.appc.provider.lcm.service;
+
+
+import org.onap.appc.executor.objects.LCMCommandStatus;
+import org.onap.appc.requesthandler.objects.RequestHandlerInput;
+import org.onap.appc.util.JsonUtil;
+import org.opendaylight.yang.gen.v1.org.onap.appc.lcm.rev160108.Action;
+import org.opendaylight.yang.gen.v1.org.onap.appc.lcm.rev160108.DistributeTrafficInput;
+import org.opendaylight.yang.gen.v1.org.onap.appc.lcm.rev160108.DistributeTrafficOutputBuilder;
+
+import java.io.IOException;
+import java.util.Map;
+
+/**
+ * Provide LCM command service for Distribute Traffic between VNFs.
+ */
+public class DistributeTrafficService extends AbstractBaseService {
+
+
+    private static final String CONFIG_FILE_NAME_PARAMETER = "ConfigFileName";
+    private static final String PAYLOAD = "payload";
+
+    /**
+     * Constructor
+     */
+    public DistributeTrafficService() {
+        super(Action.DistributeTraffic);
+        logger.debug("DistributeTrafficService starts");
+    }
+
+    /**
+     * Process a DistributeTraffic request
+     * @param input of DistributeTrafficInput from the REST API input
+     * @return DistributeTrafficOutputBuilder which has the process results
+     */
+    public DistributeTrafficOutputBuilder process(DistributeTrafficInput input) {
+
+        validate(input);
+        if (status == null) {
+            proceedAction(input);
+        }
+
+        DistributeTrafficOutputBuilder outputBuilder = new DistributeTrafficOutputBuilder();
+        outputBuilder.setStatus(status);
+        outputBuilder.setCommonHeader(input.getCommonHeader());
+        return outputBuilder;
+    }
+
+    /**
+     * Validate input.
+     * Set Status if any error detected.
+     *
+     * @param input of DistributeTrafficInput from the REST API input
+     */
+    void validate(DistributeTrafficInput input) {
+        status = validateVnfId(input.getCommonHeader(), input.getAction(), input.getActionIdentifiers());
+        if (status != null) {
+            return;
+        }
+
+        if (input.getPayload() == null) {
+            status = buildStatusForParamName(LCMCommandStatus.MISSING_MANDATORY_PARAMETER, PAYLOAD);
+            return;
+        }
+        String payloadString = input.getPayload().getValue();
+        status = validateMustHaveParamValue(payloadString == null ? payloadString : payloadString.trim(), PAYLOAD);
+        if (status != null) {
+            return;
+        }
+
+        try {
+            Map<String, String> payloadMap = JsonUtil.convertJsonStringToFlatMap(payloadString);
+            // ConfigFileName validation
+            final String configFileName = payloadMap.get(CONFIG_FILE_NAME_PARAMETER);
+            if (configFileName == null) {
+                status = buildStatusForParamName(LCMCommandStatus.MISSING_MANDATORY_PARAMETER, CONFIG_FILE_NAME_PARAMETER);
+            }
+
+        } catch(IOException e) {
+            logger.error(String.format("DistributeTrafficService (%s) got IOException when converting payload", rpcName), e);
+            status = buildStatusForErrorMsg(LCMCommandStatus.UNEXPECTED_ERROR, e.getMessage());
+        }
+    }
+
+    void proceedAction(DistributeTrafficInput input) {
+        RequestHandlerInput requestHandlerInput = getRequestHandlerInput(
+                input.getCommonHeader(), input.getActionIdentifiers(), input.getPayload(), this.getClass().getName());
+        if (requestHandlerInput != null) {
+            executeAction(requestHandlerInput);
+        }
+    }
+
+}