SDN-C Multi-site High-availability - Auto-failover

Change-Id: I4e028b31ce7a60154d2c04c63431c5ea996de8f8
Signed-off-by: Mohammadreza Pasandideh <mohammadreza.pasandideh@amdocs.com>
Issue-ID: SDNC-213

1 files changed, 58 insertions, 0 deletions

diff --git a/kubernetes/consul/resources/config/consul-agent-config/scripts/sdnc-cluster-health.sh b/kubernetes/consul/resources/config/consul-agent-config/scripts/sdnc-cluster-health.sh
new file mode 100644
index 0000000000..3b186547ce
--- /dev/null
+++ b/kubernetes/consul/resources/config/consul-agent-config/scripts/sdnc-cluster-health.sh
@@ -0,0 +1,58 @@
+#!/bin/sh
+
+# Copyright © 2018 Amdocs
+#
+# 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.
+
+# query ODL cluster state
+USERNAME="{{.Values.odl.jolokia.username}}"
+PASSWORD="{{.Values.odl.jolokia.password}}"
+
+count=${SDNC_ODL_COUNT:-1}
+siteId=0
+if [ "$SDNC_IS_PRIMARY_CLUSTER" = "false" ];then
+  siteId=1
+fi
+
+for instance in $(seq $count);do
+  shard=member-$(( $siteId*$count + $instance ))-shard-default-config
+  mbean=Category=Shards,name=$shard,type=DistributedConfigDatastore
+  url=http://{{.Release.Name}}-sdnc-$(( $instance-1 )).sdnc-cluster.{{.Release.Namespace}}:8181/jolokia/read/org.opendaylight.controller:$mbean
+
+  response=$( curl -s -u $USERNAME:$PASSWORD $url )
+  rc=$?
+  if [ $rc -ne 0 ];then
+    # failed to contact SDN-C instance - try another
+    echo "Unable to connect to $shard [rc=$?]"
+    continue
+  fi
+
+  status=$( echo "$response" | jq -r ".status" )
+  if [ "$status" != "200" ];then
+    # query failed, try another instance
+    echo "$shard query failed [http-status=$status]"
+    continue
+  fi
+
+  raftState=$( echo "$response" | jq -r ".value.RaftState" )
+  if [ "$raftState" = "Leader" -o "$raftState" = "Follower" ];then
+    # cluster has a leader and is healthy
+    echo "$shard is healthy [RaftState=$raftState]"
+    exit 0
+  else
+    echo "$shard is not healthy [RaftState=$raftState]"
+  fi
+done
+
+# ODL cluster is not healthy
+exit 2