Lockfile for analyse process.

analyse.py

@@ -4,10 +4,21 @@
 from subprocess import check_output
 import configparser
 import os
+import os.path
 import re
 import sys
 import MosDb
 
+LOCKFILE = "/tmp/n24-loudness-analyse-running.$$$"
+
+if os.path.isfile(LOCKFILE):
+    print("ERROR: Lockfile found! Previous process seems to be still running.", file=sys.stderr)
+    print("ERROR: If you are sure no other analyse.py is running, delete: {}".format(LOCKFILE), file=sys.stderr)
+    sys.exit(100)
+
+# Create lockfile
+open(LOCKFILE, "a").close()
+
 c = configparser.ConfigParser()
 c.read("config.ini")
 
@@ -33,6 +44,10 @@ for f in todo:
 
     objFile = objPath.replace(CLIP_PATH_TRANSFORM_FROM, CLIP_PATH_TRANSFORM_TO).replace("\\", "/")
 
+    if not os.path.isfile(objFile):
+        print("ERROR: File not found: {}".format(objFile), file=sys.stderr)
+        continue
+
     cmd = [LOUDNESS_SCANNER, "scan", "-l", objFile]
     output = check_output(cmd, stderr=devnull)
     output = output.decode('utf-8')
@@ -67,3 +82,4 @@ for f in todo:
 
 db.finish()
 
+os.remove(LOCKFILE)