sample watchdog using db data, add socat to image for testing scenarios

.dockerignore

@@ -1,6 +1,7 @@
 chart
 dev
 examples
+contrib
 node_modules
 Dockerfile*
 TODO.md

Dockerfile

@@ -62,7 +62,7 @@ COPY --from=build /usr/local/lib/nodejs /usr/local/lib/nodejs
 # netbase is required by rpcbind/rpcinfo to work properly
 # /etc/{services,rpc} are required
 RUN apt-get update && \
-        apt-get install -y netbase e2fsprogs xfsprogs fatresize dosfstools nfs-common cifs-utils sudo && \
+        apt-get install -y netbase socat e2fsprogs xfsprogs fatresize dosfstools nfs-common cifs-utils sudo && \
         rm -rf /var/lib/apt/lists/*
 
 # controller requirements

contrib/ctld-config-watchdog-db.sh

@@ -0,0 +1,54 @@
+#!/bin/bash
+
+WAIT_TIME_SECS=30
+USERNAME="root"
+PASSWORD="secret"
+BASE_URL="http://localhost"
+LIMIT=1000
+
+while [ 1 ]; do
+  sleep "${WAIT_TIME_SECS}"
+
+  # ctl extents
+  CTL_EXTENT_COUNT=$(ctladm devlist | tail -n +2 | wc -l | sed 's/^[ \t]*//;s/[ \t]*$//')
+  echo "ctl extent count: ${CTL_EXTENT_COUNT}"
+
+  # ctl luns
+  CTL_LUN_COUNT=$(ctladm lunlist | wc -l | sed 's/^[ \t]*//;s/[ \t]*$//')
+  echo "ctl lun count: ${CTL_LUN_COUNT}"
+
+  # db targets
+  DB_TARGET_COUNT=$(curl --user "${USERNAME}:${PASSWORD}" "${BASE_URL}/api/v2.0/iscsi/target?limit=${LIMIT}" 2>/dev/null | jq length)
+  echo "DB target count: ${DB_TARGET_COUNT}"
+
+  # db extents
+  DB_EXTENT_COUNT=$(curl --user "${USERNAME}:${PASSWORD}" "${BASE_URL}/api/v2.0/iscsi/extent?limit=${LIMIT}" 2>/dev/null | jq length)
+  echo "DB extent count: ${DB_EXTENT_COUNT}"
+
+  # db luns
+  DB_LUN_COUNT=$(curl --user "${USERNAME}:${PASSWORD}" "${BASE_URL}/api/v2.0/iscsi/targetextent?limit=${LIMIT}" 2>/dev/null | jq length)
+  echo "DB lun count: ${DB_LUN_COUNT}"
+
+  REGEN=0
+
+  if [[ ${CTL_TARGET_COUNT} -ne ${DB_TARGET_COUNT} ]]; then
+    REGEN=1
+  fi
+
+  if [[ ${CTL_EXTENT_COUNT} -ne ${DB_EXTENT_COUNT} ]]; then
+    REGEN=1
+  fi
+
+  if [[ ${CTL_LUN_COUNT} -ne ${DB_LUN_COUNT} ]]; then
+    REGEN=1
+  fi
+
+  if [[ ${REGEN} -eq 1 ]]; then
+    echo "regen ctld config"
+    midclt call etc.generate ctld &>/dev/null
+
+    echo "reload ctld service"
+    /etc/rc.d/ctld reload &>/dev/null
+  fi
+
+done