Recreate client when config is changed

Author: jiangpengcheng

common/scala/src/main/scala/org/apache/openwhisk/core/database/mongodb/MongoDBArtifactStoreProvider.scala

@@ -37,13 +37,16 @@ case class MongoDBConfig(uri: String, database: String) {
 }
 
 object MongoDBClient {
-  private var _client: Option[MongoClient] = None
+  private var _clientWithConfig: Option[(MongoClient, MongoDBConfig)] = None
 
   def client(config: MongoDBConfig): MongoClient = {
-    _client.getOrElse {
-      val client = MongoClient(config.uri)
-      _client = Some(client)
-      client
+    _clientWithConfig match {
+      case Some((client, oldConfig)) if oldConfig == config =>
+        client
+      case _ =>
+        val client = MongoClient(config.uri)
+        _clientWithConfig = Some(client, config)
+        client
     }
   }
 }

tools/travis/runUnitTests.sh

@@ -23,7 +23,7 @@ SCRIPTDIR=$(cd $(dirname "$0") && pwd)
 ROOTDIR="$SCRIPTDIR/../.."
 
 cd $ROOTDIR/tools/travis
-# export TESTCONTAINERS_RYUK_DISABLED="true"
+export TESTCONTAINERS_RYUK_DISABLED="true"
 export ORG_GRADLE_PROJECT_testSetName="REQUIRE_ONLY_DB"
 
 ./setupPrereq.sh