Handle sigterm signal

Change-Id: If6f431bfdc42f8d53497078b18813147cad1bad0
Issue-ID: DCAEGEN2-1065
Signed-off-by: Piotr Jaszczyk <piotr.jaszczyk@nokia.com>

2 files changed, 22 insertions, 5 deletions

diff --git a/sources/hv-collector-main/src/main/kotlin/org/onap/dcae/collectors/veshv/main/main.kt b/sources/hv-collector-main/src/main/kotlin/org/onap/dcae/collectors/veshv/main/main.kt
index c29c5d16..16da3721 100644
--- a/sources/hv-collector-main/src/main/kotlin/org/onap/dcae/collectors/veshv/main/main.kt
+++ b/sources/hv-collector-main/src/main/kotlin/org/onap/dcae/collectors/veshv/main/main.kt
@@ -30,6 +30,7 @@ import org.onap.dcae.collectors.veshv.utils.arrow.ExitFailure
 import org.onap.dcae.collectors.veshv.utils.arrow.unsafeRunEitherSync
 import org.onap.dcae.collectors.veshv.utils.commandline.handleWrongArgumentErrorCurried
 import org.onap.dcae.collectors.veshv.utils.logging.Logger
+import org.onap.dcae.collectors.veshv.utils.registerShutdownHook
 
 private const val VESHV_PACKAGE = "org.onap.dcae.collectors.veshv"
 private val logger = Logger("$VESHV_PACKAGE.main")
@@ -44,7 +45,7 @@ fun main(args: Array<String>) =
                 logger.withError { log("Failed to start a server", ex) }
                 ExitFailure(1)
             },
-            { logger.info { "Gentle shutdown" } }
+            { logger.info { "Finished" } }
         )
 
 private fun startAndAwaitServers(config: ServerConfiguration) =
@@ -52,7 +53,8 @@ private fun startAndAwaitServers(config: ServerConfiguration) =
         Logger.setLogLevel(VESHV_PACKAGE, config.logLevel)
         logger.info { "Using configuration: $config" }
         HealthCheckServer.start(config).bind()
-        VesServer.start(config).bind()
-            .await().bind()
+        VesServer.start(config).bind().run {
+            registerShutdownHook(shutdown()).bind()
+            await().bind()
+        }
     }.fix()
-
diff --git a/sources/hv-collector-main/src/main/scripts/entry.sh b/sources/hv-collector-main/src/main/scripts/entry.sh
index 2e8cb0c5..a612e393 100755
--- a/sources/hv-collector-main/src/main/scripts/entry.sh
+++ b/sources/hv-collector-main/src/main/scripts/entry.sh
@@ -2,4 +2,19 @@
 
 set -euo pipefail
 
-java ${JAVA_OPTS:-''} -cp '*:' org.onap.dcae.collectors.veshv.main.MainKt $@
+pid=-1
+
+function handle_sigterm() {
+  if [[ ${pid} -ge 0 ]]; then
+    echo "Caught SIGTERM signal. Redirecting to process with pid=${pid}"
+    kill -TERM "${pid}"
+    wait ${pid}
+  fi
+  exit 143 # 128 + 15 -- SIGTERM
+}
+trap "handle_sigterm" SIGTERM
+
+java ${JAVA_OPTS:-} -cp '*:' org.onap.dcae.collectors.veshv.main.MainKt $@ &
+pid=$!
+echo "Service started with pid=${pid}"
+wait ${pid}