[Improve] When starting, check whether the environment variable "SEAT…

…UNNEL_HOME" exists or not. (#134)

seatunnel-server/seatunnel-app/src/main/bin/seatunnel-backend-daemon.sh

@@ -22,10 +22,23 @@ set -
 
 WORKDIR=$(cd "$(dirname "$0")" || exit; pwd)
 
+# check
+check() {
+  # check whether the SEATUNNEL_HOME exists or not.
+  if [ "${SEATUNNEL_HOME}" ];then
+  	echo "Load connectors from ${SEATUNNEL_HOME}"
+  else
+  	echo "SEATUNNEL_HOME is not be set. Please check it."
+  	exit 1
+  fi
+}
+
 # start
 start() {
   echo "starting seatunnel..."
 
+  check
+
   JAVA_OPTS="${JAVA_OPTS} -server -Xms1g -Xmx1g -Xmn512m -XX:+PrintGCDetails -Xloggc:gc.log -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=dump.hprof"
   SPRING_OPTS="${SPRING_OPTS} -Dspring.config.name=application.yml -Dspring.config.location=classpath:application.yml"
   JAVA_OPTS="${JAVA_OPTS} -Dseatunnel-web.logs.path=${WORKDIR}/../logs"
@@ -78,4 +91,4 @@ case "$1" in
 *)
   echo "Usage: seatunnel-daemon.sh {start|stop|status}"
   exit 1
-esac
+esac