feat(node): try to manage scale up and scale down

resources/node/files/scripts/common.sh

@@ -14,6 +14,31 @@ pingSentinel() {
     return ${ret}
 }
 
+getPrimaryInfo() {
+    valkey-cli --csv -h ${VALKEY_SERVICE} -p ${VALKEY_SENTINEL_PORT} sentinel get-primary-addr-by-name "mymaster"| \
+        awk -F ',' '{ gsub(/"/,"",$0); print $1 " " $2 }'
+    return ${?}
+}
+
+getSentinelMasterName() {
+    getPrimaryInfo | awk -F ' ' '{print $1}'
+}
+
+getFailOverStatus() {
+    # Check if the failover is finished
+    local failoverStatus
+    primaryInfo=$(getPrimaryInfo)
+    primaryHost=$(echo ${primaryInfo} | awk -F ' ' '{print $1}')
+    currentHost=$(hostname -f)
+    if [[ "${primaryHost}" != "${currentHost}" ]]; then
+        echo "Failover finished"
+        return 0
+    else
+        echo "Failover in progress"
+        return 1
+    fi
+}
+
 waitForSentinel() {
     tout=60
     while true; do
@@ -35,16 +60,6 @@ waitForSentinel() {
     sleep 10
 }
 
-getPrimaryInfo() {
-    valkey-cli --csv -h ${VALKEY_SERVICE} -p ${VALKEY_SENTINEL_PORT} sentinel get-primary-addr-by-name "mymaster"| \
-        awk -F ',' '{ gsub(/"/,"",$0); print $1 " " $2 }'
-    return ${?}
-}
-
-getSentinelMasterName() {
-    getPrimaryInfo | awk -F ' ' '{print $1}'
-}
-
 sentinelIsMaster() {
     # Check if the sentinel is master
     primaryInfo=$(getPrimaryInfo)
@@ -57,4 +72,10 @@ sentinelIsMaster() {
         echo "Sentinel is master"
         return 0
     fi
+}
+
+sentinelReset() {
+    # Reset the sentinel
+    valkey-cli -h ${VALKEY_SERVICE} -p ${VALKEY_SENTINEL_PORT} sentinel reset "${1}"
+    return $?
 }