1 files changed, 41 insertions, 0 deletions
diff --git a/cdap3vm/config/services-templates/utility-scripts.sh b/cdap3vm/config/services-templates/utility-scripts.sh
new file mode 100644
index 0000000..5bfbe86
--- /dev/null
+++ b/cdap3vm/config/services-templates/utility-scripts.sh
@@ -0,0 +1,41 @@
+#!/bin/bash
+
+# ============LICENSE_START==========================================
+# ===================================================================
+# Copyright © 2017 AT&T Intellectual Property. All rights reserved.
+# ===================================================================
+# 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============================================
+# ECOMP and OpenECOMP are trademarks and service marks of AT&T Intellectual Property.
+
+wait_for_remote_service() {
+  remote_host="$1"
+  remote_port="$2"
+  sleep_time=${3:-30} # default of 30 seconds between retries
+
+  # keep checking remote_host's remote_port every sleep_time seconds till we get a connection
+  while ( ! nc $remote_host $remote_port < /dev/null ); do sleep $sleep_time ; done
+}
+
+wait_for_namenode() {
+  # keep checking namenode's port 8020 till it is up -- do it every 30 seconds
+  wait_for_remote_service __HDP_NAMENODE__ 8020 30
+}
+
+wait_for_hbase_shell_OK() {
+  # run hbase shell and see if we connect to hbase... Better than waiting for ports
+  while ( echo list | hbase shell 2>&1 | grep ^ERROR > /dev/null ); do
+    sleep 30
+  done
+}
+