Fix start shell

hugegraph-dist/src/assembly/static/bin/hugegraph

@@ -37,24 +37,17 @@
 ### END INIT INFO
 
 # Variables
+# it requires user to set a fixed abs path manually
+INSTALL_DIR=
 SERVER_PORT=
 
-function abs_path() {
-    SOURCE="${BASH_SOURCE[0]}"
-    while [ -h "$SOURCE" ]; do
-        DIR="$( cd -P "$( dirname "$SOURCE" )" && pwd )"
-        SOURCE="$(readlink "$SOURCE")"
-        [[ $SOURCE != /* ]] && SOURCE="$DIR/$SOURCE"
-    done
-    echo "$( cd -P "$( dirname "$SOURCE" )" && pwd )"
-}
-
-BIN=`abs_path`
+BIN_DIR=$INSTALL_DIR/bin
 SERVER_URL="http://localhost:${SERVER_PORT}"
 DETECT_URL="$SERVER_URL/versions"
 
 # Start the HugeGraphServer
 start() {
+    check_variables
     echo "Starting HugeGraphServer..."
     # Verify if the service is running
     get_status
@@ -82,6 +75,7 @@ start() {
 
 # Stop the MATH
 stop() {
+    check_variables
     echo "Stopping HugeGraphServer..."
     # Verify if the service is running
     get_status
@@ -131,6 +125,18 @@ get_status() {
     fi
 }
 
+check_variables() {
+    if [ -z "$INSTALL_DIR" ]; then
+        echo "Please setting variables 'INSTALL_DIR'"
+        exit 1
+    fi
+
+    if [ -z "$SERVER_PORT" ]; then
+        echo "Please setting variables 'SERVER_PORT'"
+        exit 1
+    fi
+}
+
 # Main logic
 case "$1" in
     start)