1 files changed, 108 insertions, 0 deletions
diff --git a/appc-client/client-kit/src/main/java/org/onap/appc/client/lcm/impl/business/CoreResponseHandler.java b/appc-client/client-kit/src/main/java/org/onap/appc/client/lcm/impl/business/CoreResponseHandler.java
new file mode 100644
index 000000000..3d4786862
--- /dev/null
+++ b/appc-client/client-kit/src/main/java/org/onap/appc/client/lcm/impl/business/CoreResponseHandler.java
@@ -0,0 +1,108 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP : APPC
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * Copyright (C) 2017 Amdocs
+ * =============================================================================
+ * 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.
+ * 
+ * ECOMP is a trademark and service mark of AT&T Intellectual Property.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.appc.client.lcm.impl.business;
+
+import org.onap.appc.client.lcm.exceptions.AppcClientInternalException;
+
+import org.onap.appc.client.lcm.model.Status;
+import com.att.eelf.configuration.EELFLogger;
+import com.att.eelf.configuration.EELFManager;
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
+
+import java.io.IOException;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+
+class CoreResponseHandler<T> {
+    private final Class<T> rpcOutput;
+    private final ObjectMapper mapper;
+
+    private final EELFLogger LOG = EELFManager.getInstance().getLogger(CoreResponseHandler.class);
+
+    CoreResponseHandler(Class<T> rpcOutput, ObjectMapper mapper) {
+        this.rpcOutput = rpcOutput;
+        this.mapper = mapper;
+    }
+
+    T getResponse(String message, String type, Boolean[] isFinal) throws AppcClientInternalException {
+        if (type.equals("error")) {
+            try {
+                String correlationId = getCorrelationID(message);
+                LOG.error("Received response with error on correlation id: " + correlationId);
+            } catch (IOException e) {
+                LOG.error("Received response with error and couldn't extract correlationID");
+            }
+            throw new AppcClientInternalException(message);
+        }
+        T responseObject = jsonToResponseObject(message);
+        int code = getStatusCode(responseObject);
+
+        int family = code / 100;
+
+        switch (family) {
+            case 1:
+            case 5:
+                // not final
+                break;
+            case 2:
+            case 3:
+            case 4:
+                isFinal[0] = true;
+                // final
+                break;
+            default: // Should never happen
+                throw new AppcClientInternalException(new IllegalStateException("Unsupported status code " + code + ". message: " + message));
+        }
+        return responseObject;
+
+    }
+
+    private T jsonToResponseObject(String message) throws AppcClientInternalException {
+        try {
+            JsonNode jsonOutput = mapper.readTree(message).get("output");
+            return rpcOutput.cast(mapper.treeToValue(jsonOutput, rpcOutput));
+        } catch (IOException e) {
+            throw new AppcClientInternalException("failed to read message: " + message, e);
+        }
+    }
+
+    private int getStatusCode(Object response) throws AppcClientInternalException {
+        try {
+            Method method = response.getClass().getMethod("getStatus");
+            Status status = (Status) method.invoke(response);
+            return status.getCode();
+        } catch (NoSuchMethodException | IllegalAccessException | InvocationTargetException e) {
+            throw new AppcClientInternalException("failed to get status code from response: " + response, e);
+        }
+    }
+
+    private String getCorrelationID(String message) throws IOException {
+        JsonNode common = mapper.readTree(message).get("output").get("common-header");
+        String correlationId = common.get("request-id").asText() + "-" + common.get("sub-request-id").asText();
+        return correlationId;
+    }
+
+}