1 files changed, 59 insertions, 0 deletions
diff --git a/laas-fog/source/listen.py b/laas-fog/source/listen.py
new file mode 100755
index 0000000..ed714c9
--- /dev/null
+++ b/laas-fog/source/listen.py
@@ -0,0 +1,59 @@
+#!/usr/bin/python
+"""
+#############################################################################
+#Copyright 2017 Parker Berberian and others                                 #
+#                                                                           #
+#Licensed under the Apache License, Version 2.0 (the "License");            #
+#you may not use this file except in compliance with the License.           #
+#You may obtain a copy of the License at                                    #
+#                                                                           #
+#    http://www.apache.org/licenses/LICENSE-2.0                             #
+#                                                                           #
+#Unless required by applicable law or agreed to in writing, software        #
+#distributed under the License is distributed on an "AS IS" BASIS,          #
+#WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.   #
+#See the License for the specific language governing permissions and        #
+#limitations under the License.                                             #
+#############################################################################
+"""
+import subprocess
+import sys
+import os
+import yaml
+
+"""
+This is the file that the user will execute to start the whole process.
+This file will start the pharos api listener in a new process and then exit.
+"""
+
+
+def checkArgs():
+    """
+    error checks the cmd line args and gets the path
+    of the config file
+    """
+    usage = "./listen.py --config <path_to_pharos_config>"
+    if "--help" in sys.argv:
+        print usage
+        sys.exit(0)
+
+    if "--config" not in sys.argv:
+        print usage
+        sys.exit(1)
+
+    try:
+        i = sys.argv.index("--config")
+        config_file = sys.argv[i+1]
+        # verifies that the file exists, is readable, and formatted correctly
+        yaml.safe_load(open(config_file))
+        return config_file
+    except Exception:
+        print "Bad config file"
+        sys.exit(1)
+
+
+# reads args and starts the pharos listener in the background
+config = checkArgs()
+source_dir = os.path.dirname(os.path.realpath(__file__))
+pharos_path = os.path.join(source_dir, "pharos.py")
+subprocess.Popen(['/usr/bin/python', pharos_path, '--config', config])