Add healthcheck functionality

Change-Id: Ic4bf69047cc4c7737cd93e217e407c684bbc4027
Issue-ID: DCAEGEN2-1149
Signed-off-by: dfarrelly <david.farrelly@est.tech>

2 files changed, 43 insertions, 1 deletions

diff --git a/src/main/java/org/onap/dcaegen2/services/pmmapper/App.java b/src/main/java/org/onap/dcaegen2/services/pmmapper/App.java
index 1c837e4..784e0f1 100644
--- a/src/main/java/org/onap/dcaegen2/services/pmmapper/App.java
+++ b/src/main/java/org/onap/dcaegen2/services/pmmapper/App.java
@@ -34,6 +34,7 @@ import org.onap.dcaegen2.services.pmmapper.exceptions.MapperConfigException;
 import org.onap.dcaegen2.services.pmmapper.exceptions.TooManyTriesException;
 import org.onap.dcaegen2.services.pmmapper.model.BusControllerConfig;
 import org.onap.dcaegen2.services.pmmapper.model.MapperConfig;
+import org.onap.dcaegen2.services.pmmapper.healthcheck.HealthCheckHandler;
 
 import java.net.MalformedURLException;
 import java.net.URL;
@@ -41,6 +42,7 @@ import java.net.URL;
 public class App {
 
     public static void main(String[] args) throws MalformedURLException, InterruptedException, TooManyTriesException, CBSConfigException, ConsulServerError, EnvironmentConfigException, CBSServerError, MapperConfigException {
+        HealthCheckHandler healthCheckHandler = new HealthCheckHandler();
         DataRouterSubscriber dataRouterSubscriber = new DataRouterSubscriber(event -> {
             event.getHttpServerExchange().unDispatch();
             event.getHttpServerExchange().getResponseSender().send(StatusCodes.OK_STRING);
@@ -53,7 +55,8 @@ public class App {
 
         Undertow.builder()
                 .addHttpListener(8081, "0.0.0.0")
-                .setHandler(Handlers.routing().add("put", "/sub", dataRouterSubscriber))
+                .setHandler(Handlers.routing().add("put", "/sub", dataRouterSubscriber)
+                .add("get", "/healthcheck", healthCheckHandler))
                 .build().start();
     }
 }
diff --git a/src/main/java/org/onap/dcaegen2/services/pmmapper/healthcheck/HealthCheckHandler.java b/src/main/java/org/onap/dcaegen2/services/pmmapper/healthcheck/HealthCheckHandler.java
new file mode 100644
index 0000000..2c788b0
--- /dev/null
+++ b/src/main/java/org/onap/dcaegen2/services/pmmapper/healthcheck/HealthCheckHandler.java
@@ -0,0 +1,39 @@
+/*
+ * -
+ *  * ============LICENSE_START=======================================================
+ *  *  Copyright (C) 2019 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.dcaegen2.services.pmmapper.healthcheck;
+
+import io.undertow.server.HttpHandler;
+import io.undertow.server.HttpServerExchange;
+import io.undertow.util.StatusCodes;
+
+public class HealthCheckHandler implements HttpHandler {
+
+    @Override
+    public void handleRequest(HttpServerExchange exchange) {
+
+        exchange.setStatusCode(StatusCodes.OK)
+                .getResponseSender()
+                .send(StatusCodes.OK_STRING);
+    }
+
+}