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>

4 files changed, 43 insertions, 9 deletions

diff --git a/hv-collector-main/pom.xml b/hv-collector-main/pom.xml
index e594aeff..0e956288 100644
--- a/hv-collector-main/pom.xml
+++ b/hv-collector-main/pom.xml
@@ -89,11 +89,19 @@
         </dependency>
         <dependency>
             <groupId>${project.parent.groupId}</groupId>
+            <artifactId>hv-collector-health-check</artifactId>
+            <version>${project.parent.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>${project.parent.groupId}</groupId>
             <artifactId>hv-collector-test-utils</artifactId>
             <version>${project.parent.version}</version>
             <scope>test</scope>
         </dependency>
-
+        <dependency>
+            <groupId>io.ratpack</groupId>
+            <artifactId>ratpack-core</artifactId>
+        </dependency>
         <dependency>
             <groupId>io.arrow-kt</groupId>
             <artifactId>arrow-core</artifactId>
diff --git a/hv-collector-main/src/main/kotlin/org/onap/dcae/collectors/veshv/main/ArgVesHvConfiguration.kt b/hv-collector-main/src/main/kotlin/org/onap/dcae/collectors/veshv/main/ArgVesHvConfiguration.kt
index 7c958b97..26230cd3 100644
--- a/hv-collector-main/src/main/kotlin/org/onap/dcae/collectors/veshv/main/ArgVesHvConfiguration.kt
+++ b/hv-collector-main/src/main/kotlin/org/onap/dcae/collectors/veshv/main/ArgVesHvConfiguration.kt
@@ -35,6 +35,7 @@ import org.onap.dcae.collectors.veshv.utils.commandline.CommandLineOption.CONSUL
 import org.onap.dcae.collectors.veshv.utils.commandline.CommandLineOption.CONSUL_FIRST_REQUEST_DELAY
 import org.onap.dcae.collectors.veshv.utils.commandline.CommandLineOption.CONSUL_REQUEST_INTERVAL
 import org.onap.dcae.collectors.veshv.utils.commandline.CommandLineOption.DUMMY_MODE
+import org.onap.dcae.collectors.veshv.utils.commandline.CommandLineOption.HEALTH_CHECK_API_PORT
 import org.onap.dcae.collectors.veshv.utils.commandline.CommandLineOption.IDLE_TIMEOUT_SEC
 import org.onap.dcae.collectors.veshv.utils.commandline.CommandLineOption.LISTEN_PORT
 import org.onap.dcae.collectors.veshv.utils.commandline.CommandLineOption.PRIVATE_KEY_FILE
@@ -44,6 +45,7 @@ import java.time.Duration
 
 internal class ArgVesHvConfiguration : ArgBasedConfiguration<ServerConfiguration>(DefaultParser()) {
     override val cmdLineOptionsList = listOf(
+            HEALTH_CHECK_API_PORT,
             LISTEN_PORT,
             CONSUL_CONFIG_URL,
             CONSUL_FIRST_REQUEST_DELAY,
@@ -59,12 +61,17 @@ internal class ArgVesHvConfiguration : ArgBasedConfiguration<ServerConfiguration
     override fun getConfiguration(cmdLine: CommandLine): Option<ServerConfiguration> =
             ForOption extensions {
                 binding {
+                    val healthCheckApiPort = cmdLine.intValue(
+                            HEALTH_CHECK_API_PORT,
+                            DefaultValues.HEALTH_CHECK_API_PORT
+                    )
                     val listenPort = cmdLine.intValue(LISTEN_PORT).bind()
                     val idleTimeoutSec = cmdLine.longValue(IDLE_TIMEOUT_SEC, DefaultValues.IDLE_TIMEOUT_SEC)
                     val dummyMode = cmdLine.hasOption(DUMMY_MODE)
                     val security = createSecurityConfiguration(cmdLine)
                     val configurationProviderParams = createConfigurationProviderParams(cmdLine).bind()
                     ServerConfiguration(
+                            healthCheckApiPort = healthCheckApiPort,
                             listenPort = listenPort,
                             configurationProviderParams = configurationProviderParams,
                             securityConfiguration = security,
@@ -77,9 +84,14 @@ internal class ArgVesHvConfiguration : ArgBasedConfiguration<ServerConfiguration
             ForOption extensions {
                 binding {
                     val configUrl = cmdLine.stringValue(CONSUL_CONFIG_URL).bind()
-                    val firstRequestDelay = cmdLine.longValue(CONSUL_FIRST_REQUEST_DELAY, DefaultValues.CONSUL_FIRST_REQUEST_DELAY)
-                    val requestInterval = cmdLine.longValue(CONSUL_REQUEST_INTERVAL, DefaultValues.CONSUL_REQUEST_INTERVAL)
-
+                    val firstRequestDelay = cmdLine.longValue(
+                            CONSUL_FIRST_REQUEST_DELAY,
+                            DefaultValues.CONSUL_FIRST_REQUEST_DELAY
+                    )
+                    val requestInterval = cmdLine.longValue(
+                            CONSUL_REQUEST_INTERVAL,
+                            DefaultValues.CONSUL_REQUEST_INTERVAL
+                    )
                     ConfigurationProviderParams(
                             configUrl,
                             Duration.ofSeconds(firstRequestDelay),
@@ -103,6 +115,7 @@ internal class ArgVesHvConfiguration : ArgBasedConfiguration<ServerConfiguration
     }
 
     internal object DefaultValues {
+        const val HEALTH_CHECK_API_PORT = 6060
         const val CONSUL_FIRST_REQUEST_DELAY = 10L
         const val CONSUL_REQUEST_INTERVAL = 5L
         const val PRIVATE_KEY_FILE = "/etc/ves-hv/server.key"
diff --git a/hv-collector-main/src/main/kotlin/org/onap/dcae/collectors/veshv/main/main.kt b/hv-collector-main/src/main/kotlin/org/onap/dcae/collectors/veshv/main/main.kt
index 44d09d45..23d7d2e2 100644
--- a/hv-collector-main/src/main/kotlin/org/onap/dcae/collectors/veshv/main/main.kt
+++ b/hv-collector-main/src/main/kotlin/org/onap/dcae/collectors/veshv/main/main.kt
@@ -23,6 +23,7 @@ import org.onap.dcae.collectors.veshv.boundary.Server
 import org.onap.dcae.collectors.veshv.boundary.ServerHandle
 import org.onap.dcae.collectors.veshv.factory.CollectorFactory
 import org.onap.dcae.collectors.veshv.factory.ServerFactory
+import org.onap.dcae.collectors.veshv.healthcheck.http.HealthCheckApiServer
 import org.onap.dcae.collectors.veshv.impl.adapters.AdapterFactory
 import org.onap.dcae.collectors.veshv.model.ServerConfiguration
 import org.onap.dcae.collectors.veshv.utils.arrow.ExitFailure
@@ -36,6 +37,7 @@ private const val PROGRAM_NAME = "java org.onap.dcae.collectors.veshv.main.MainK
 fun main(args: Array<String>) =
         ArgVesHvConfiguration().parse(args)
                 .mapLeft(handleWrongArgumentErrorCurried(PROGRAM_NAME))
+                .map(::startHealthCheckApiServer)
                 .map(::createServer)
                 .map {
                     it.start()
@@ -50,7 +52,6 @@ fun main(args: Array<String>) =
                         { logger.info("Gentle shutdown") }
                 )
 
-
 private fun createServer(config: ServerConfiguration): Server {
     val sink = if (config.dummyMode) AdapterFactory.loggingSink() else AdapterFactory.kafkaSink()
     val collectorProvider = CollectorFactory(
@@ -62,7 +63,13 @@ private fun createServer(config: ServerConfiguration): Server {
     return ServerFactory.createNettyTcpServer(config, collectorProvider)
 }
 
-private fun logServerStarted(handle: ServerHandle): ServerHandle {
-    logger.info("HighVolume VES Collector is up and listening on ${handle.host}:${handle.port}")
-    return handle
+private fun logServerStarted(handle: ServerHandle): ServerHandle = handle.also {
+    logger.info("HighVolume VES Collector is up and listening on ${it.host}:${it.port}")
+}
+
+private fun startHealthCheckApiServer(config: ServerConfiguration): ServerConfiguration = config.apply {
+    HealthCheckApiServer()
+            .start(healthCheckApiPort)
+            .unsafeRunSync()
+            .also { logger.info("Health check api server started on port ${it.bindPort}") }
 }
diff --git a/hv-collector-main/src/test/kotlin/org/onap/dcae/collectors/veshv/main/ArgVesHvConfigurationTest.kt b/hv-collector-main/src/test/kotlin/org/onap/dcae/collectors/veshv/main/ArgVesHvConfigurationTest.kt
index 14f9be0b..26507197 100644
--- a/hv-collector-main/src/test/kotlin/org/onap/dcae/collectors/veshv/main/ArgVesHvConfigurationTest.kt
+++ b/hv-collector-main/src/test/kotlin/org/onap/dcae/collectors/veshv/main/ArgVesHvConfigurationTest.kt
@@ -40,6 +40,7 @@ import java.time.Duration
  */
 object ArgVesHvConfigurationTest : Spek({
     lateinit var cut: ArgVesHvConfiguration
+    val healthCheckApiPort = "6070"
     val configurationUrl = "http://test-address/test"
     val firstRequestDelay = "10"
     val requestInterval = "5"
@@ -58,6 +59,7 @@ object ArgVesHvConfigurationTest : Spek({
 
             beforeEachTest {
                 result = cut.parseExpectingSuccess("--ssl-disable",
+                        "--health-check-api-port", healthCheckApiPort,
                         "--listen-port", listenPort,
                         "--config-url", configurationUrl,
                         "--first-request-delay", firstRequestDelay,
@@ -67,7 +69,11 @@ object ArgVesHvConfigurationTest : Spek({
                         "--trust-cert-file", trustCert.toFile().absolutePath)
             }
 
-            it("should set proper port") {
+            it("should set proper health check api port") {
+                assertThat(result.healthCheckApiPort).isEqualTo(healthCheckApiPort.toInt())
+            }
+
+            it("should set proper listen port") {
                 assertThat(result.listenPort).isEqualTo(listenPort.toInt())
             }