Integret scheduled mode for periodic backups

src/docker/Dockerfile

@@ -16,7 +16,8 @@ ENV VERSION="1.0"
 
 RUN apt-get update -qq
 RUN apt-get install build-essential libcurl4-openssl-dev libxml2-dev mime-support -y
-RUN apt install s3fs mysql-client -y
+RUN apt install s3fs mysql-client supervisor cron -y
+
 # Clear cache
 RUN apt-get clean && rm -rf /var/lib/apt/lists/*
 
@@ -28,6 +29,8 @@ RUN chmod 777 /tmp/s3cache
 COPY src/mysql_bkup.sh /usr/local/bin/
 RUN chmod +x /usr/local/bin/mysql_bkup.sh
 
+ADD src/supervisord.conf /etc/supervisor/supervisord.conf
+
 RUN ln -s /usr/local/bin/mysql_bkup.sh /usr/local/bin/mysql_bkup
 RUN ln -s /usr/local/bin/mysql_bkup.sh /usr/local/bin/bkup
 

src/mysql_bkup.sh

@@ -1,5 +1,4 @@
 #!/usr/bin/env bash 
-
 set -e
 TIME=$(date +%Y%m%d_%H%M%S)
 MY_SQL_DUMP=/usr/bin/mysqldump
@@ -10,6 +9,8 @@ export STORAGE=local
 export STORAGE_PATH=/backup
 export S3_PATH=/mysql-bkup
 export TIMEOUT=60
+export EXECUTION_MODE="default"
+export SCHEDULE_PERIOD="*/30 * * * *"
 export FILE_COMPRESION=true
 usage_info()
 {
@@ -92,6 +93,16 @@ flags()
             [ $# = 0 ] && error "No database name specified"
             export DB_PORT="$1"
             shift;;
+        (-m|--mode)
+            shift
+            [ $# = 0 ] && error "No Scheduled mode specified"
+            export EXECUTION_MODE="$1"
+            shift;;
+        (--period)
+            shift
+            [ $# = 0 ] && error "No Scheduled period entered"
+            export SCHEDULE_PERIOD="$1"
+            shift;;
         (-t|--timeout)
             shift
             [ $# = 0 ] && error "No timeout specified"
@@ -177,8 +188,58 @@ else
 export STORAGE_PATH=/s3mnt$S3_PATH
 fi
 }
+create_crontab_script()
+{
+TASK=/usr/local/bin/backup_cron.sh
+touch $TASK
+if [ $STORAGE == 's3' ]
+then
+cat > "$TASK" <<EOF
+#!/usr/bin/env bash 
+set -e
+bkup --operation backup --dbname $DB_NAME --port $DB_PORT --storage s3 --path $S3_PATH 
+EOF
+else
+cat > "$TASK" <<EOF
+#!/usr/bin/env bash 
+set -e
+bkup --operation backup --dbname $DB_NAME --port $DB_PORT
+EOF
+fi
+
+chmod +x /usr/local/bin/backup_cron.sh
+ln -s /usr/local/bin/backup_cron.sh /usr/local/bin/backup_cron
+## Create crontab job
+CRON_JOB=/etc/cron.d/backup_cron
+touch $CRON_JOB
+cat > "$CRON_JOB" <<EOF
+$SCHEDULE_PERIOD root exec /bin/bash -c ". /run/supervisord.env; /usr/local/bin/backup_cron.sh >> /var/log/backup_cron.log"
+EOF
+chmod 0644 /etc/cron.d/*
+crontab /etc/cron.d/backup_cron
+}
+scheduled_mode()
+{
+  if [  $OPERATION == 'backup' ]
+  then
+     create_crontab_script
+     echo ""
+     echo "**********************************"
+     echo "     Starting MySQL Bkup...       "
+     echo "***********************************"
+     echo "Running in Scheduled mode"
+     echo "Execution period $SCHEDULE_PERIOD"
+    supervisord -c /etc/supervisor/supervisord.conf
+  else
+    echo "Scheduled mode supports only backup operation"
+    exit 1
+  fi
+}
+
 flags "$@"
 # ?
+if [  $EXECUTION_MODE == 'default' ]
+then
   if [  $OPERATION != 'backup' ]
   then
      if [ $STORAGE != 's3' ]
@@ -198,4 +259,11 @@ flags "$@"
          echo "Backup to s3 storage"
          s3_backup
       fi
-   fi
+   fi
+elif [  $EXECUTION_MODE == 'scheduled' ]
+then
+  scheduled_mode
+else
+echo "Error, unknow execution mode!"
+exit 1
+fi

src/supervisord.conf

@@ -0,0 +1,13 @@
+[supervisord]
+nodaemon=true
+user=root
+logfile=/var/log/supervisor/supervisord.log
+pidfile=/var/run/supervisord.pid
+
+[program:cron]
+command = /bin/bash -c "declare -p | grep -Ev '^declare -[[:alpha:]]*r' > /run/supervisord.env && /usr/sbin/cron -f -L 15"
+autostart=true
+autorestart=true
+user = root
+stderr_logfile=/var/log/cron.err.log
+stdout_logfile=/var/log/cron.out.log