fixing post-restore script to work for long restore names. (#794)

Co-authored-by: Scott Seago <sseago@redhat.com>

Author: openshift-cherrypick-robot

docs/scripts/dc-restic-post-restore.sh

@@ -1,28 +1,40 @@
 #!/bin/bash
 set -e
 
+label_name () {
+    if [ "${#1}" -le "63" ]; then
+	echo $1
+	return
+    fi
+    sha=$(echo -n $1|sha256sum)
+    echo "${1:0:57}${sha:0:6}"
+}
+
 OADP_NAMESPACE=${OADP_NAMESPACE:=openshift-adp}
 
 if [[ $# -ne 1 ]]; then
-  echo "usage: ${BASH_SOURCE} restore-name"
-  exit 1
+    echo "usage: ${BASH_SOURCE} restore-name"
+    exit 1
 fi
 
 echo using OADP Namespace $OADP_NAMESPACE
-echo restore $1
+echo restore: $1
+
+label=$(label_name $1)
+echo label: $label
 
 echo Deleting disconnected restore pods
-oc delete pods -l oadp.openshift.io/disconnected-from-dc=$1
+oc delete pods -l oadp.openshift.io/disconnected-from-dc=$label
 
-for dc in $(oc get dc --all-namespaces -l oadp.openshift.io/replicas-modified=$1 -o jsonpath='{range .items[*]}{.metadata.namespace}{","}{.metadata.name}{","}{.metadata.annotations.oadp\.openshift\.io/original-replicas}{","}{.metadata.annotations.oadp\.openshift\.io/original-paused}{"\n"}')
+for dc in $(oc get dc --all-namespaces -l oadp.openshift.io/replicas-modified=$label -o jsonpath='{range .items[*]}{.metadata.namespace}{","}{.metadata.name}{","}{.metadata.annotations.oadp\.openshift\.io/original-replicas}{","}{.metadata.annotations.oadp\.openshift\.io/original-paused}{"\n"}')
 do
     IFS=',' read -ra dc_arr <<< "$dc"
-    echo Found deployment ${dc_arr[0]}/${dc_arr[1]}, setting replicas: ${dc_arr[2]}, paused: ${dc_arr[3]}
-
-    cat <<EOF | oc patch dc  -n ${dc_arr[0]} ${dc_arr[1]} --patch-file /dev/stdin
+    if [ ${#dc_arr[0]} -gt 0 ]; then
+	echo Found deployment ${dc_arr[0]}/${dc_arr[1]}, setting replicas: ${dc_arr[2]}, paused: ${dc_arr[3]}
+	cat <<EOF | oc patch dc  -n ${dc_arr[0]} ${dc_arr[1]} --patch-file /dev/stdin
 spec:
   replicas: ${dc_arr[2]}
   paused: ${dc_arr[3]}
 EOF
-
+    fi
 done