Create health check module

Create ves-hv-collector-health-check module with dummy api server and connect it with ves-hv-collector-main
This is a preparation for health check mechanism implementation

Change-Id: I2f668ab7337b1ed7e2afea6c56f34880de3ef1b5
Issue-ID: DCAEGEN2-659
Signed-off-by: Jakub Dudycz <jakub.dudycz@nokia.com>

2 files changed, 106 insertions, 0 deletions

diff --git a/hv-collector-health-check/pom.xml b/hv-collector-health-check/pom.xml
new file mode 100644
index 00000000..4072ec24
--- /dev/null
+++ b/hv-collector-health-check/pom.xml
@@ -0,0 +1,57 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+
+    <modelVersion>4.0.0</modelVersion>
+
+    <licenses>
+        <license>
+            <name>The Apache Software License, Version 2.0</name>
+            <url>http://www.apache.org/licenses/LICENSE-2.0.txt</url>
+        </license>
+    </licenses>
+
+    <properties>
+        <skipAnalysis>false</skipAnalysis>
+        <failIfMissingUnitTests>false</failIfMissingUnitTests>
+    </properties>
+
+    <parent>
+        <groupId>org.onap.dcaegen2.collectors.veshv</groupId>
+        <artifactId>ves-hv-collector</artifactId>
+        <version>1.0.0-SNAPSHOT</version>
+        <relativePath>..</relativePath>
+    </parent>
+
+    <artifactId>hv-collector-health-check</artifactId>
+    <description>VES HighVolume Collector :: Health check</description>
+
+    <build>
+        <plugins>
+            <plugin>
+                <artifactId>kotlin-maven-plugin</artifactId>
+                <groupId>org.jetbrains.kotlin</groupId>
+            </plugin>
+            <plugin>
+                <artifactId>maven-surefire-plugin</artifactId>
+                <groupId>org.apache.maven.plugins</groupId>
+            </plugin>
+        </plugins>
+    </build>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.jetbrains.kotlin</groupId>
+            <artifactId>kotlin-stdlib-jdk8</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.ratpack</groupId>
+            <artifactId>ratpack-core</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.arrow-kt</groupId>
+            <artifactId>arrow-effects</artifactId>
+        </dependency>
+    </dependencies>
+</project>
\ No newline at end of file
diff --git a/hv-collector-health-check/src/main/kotlin/org/onap/dcae/collectors/veshv/healthcheck/http/HealthCheckApiServer.kt b/hv-collector-health-check/src/main/kotlin/org/onap/dcae/collectors/veshv/healthcheck/http/HealthCheckApiServer.kt
new file mode 100644
index 00000000..9cab031a
--- /dev/null
+++ b/hv-collector-health-check/src/main/kotlin/org/onap/dcae/collectors/veshv/healthcheck/http/HealthCheckApiServer.kt
@@ -0,0 +1,49 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * 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.dcae.collectors.veshv.healthcheck.http
+
+import arrow.effects.IO
+import ratpack.handling.Chain
+import ratpack.http.Status
+import ratpack.server.RatpackServer
+import ratpack.server.ServerConfig
+
+/**
+ * @author Jakub Dudycz <jakub.dudycz@nokia.com>
+ * @since August 2018
+ */
+class HealthCheckApiServer {
+
+    fun start(port: Int): IO<RatpackServer> = IO {
+        RatpackServer
+                .start {
+                    it
+                            .serverConfig(ServerConfig.embedded().port(port).development(false))
+                            .handlers(this::configureHandlers)
+                }
+    }
+
+    private fun configureHandlers(chain: Chain) {
+        chain
+                .get("healthcheck") { ctx ->
+                    ctx.response.status(Status.OK).send()
+                }
+    }
+}
\ No newline at end of file