Added new plugin checkspace #438

Checks if it's enough space in disk, if not, error status is set.

conf-dist.ini

@@ -107,6 +107,10 @@ lockscreen = False
 appearance = False
 cameracontrol = False
 muteinputs = False
+checkspace = False
+
+[checkspace]
+minfreespace = 10 ;In GB
 
 [cameracontrol]
 path = /dev/ttyUSB0

galicaster/plugins/checkspace.py

@@ -0,0 +1,43 @@
+# -*- coding:utf-8 -*-
+# Galicaster, Multistream Recorder and Player
+#
+#       galicaster/plugins/checkspace
+#
+# Copyright (c) 2016, Teltek Video Research <galicaster@teltek.es>
+#
+# This work is licensed under the Creative Commons Attribution-
+# NonCommercial-ShareAlike 3.0 Unported License. To view a copy of
+# this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/
+# or send a letter to Creative Commons, 171 Second Street, Suite 300,
+# San Francisco, California, 94105, USA.
+
+"""
+
+"""
+
+from galicaster.core import context
+from galicaster.recorder.service import PREVIEW_STATUS
+
+conf = None
+logger = None
+repo = None
+dispatcher = None
+
+def init():
+    global conf, logger, repo, dispatcher, minfreespace, freespace
+    conf = context.get_conf()
+    dispatcher = context.get_dispatcher()
+    logger = context.get_logger()
+    repo = context.get_repository()
+
+    minfreespace = conf.get_int('checkspace','minfreespace')
+    if not minfreespace:
+        raise Exception("Parameter minfreespace not configured")
+
+    logger.info("Parameter 'minfreespace' set to {} GB".format(minfreespace))
+    dispatcher.connect("recorder-ready", check_space)
+
+def check_space(sender):
+    freespace = repo.get_free_space() /(1024*1024*1024)
+    if freespace < minfreespace:
+        dispatcher.emit("recorder-error", "Low repository space: repo has {} GB free space available". format(freespace))

galicaster/recorder/service.py

@@ -87,6 +87,7 @@ def preview(self):
             self.__prepare()
             self.recorder.preview()
             self.__set_status(PREVIEW_STATUS)
+            self.dispatcher.emit("recorder-ready")
             return True
 
         except Exception as exc:
@@ -109,7 +110,6 @@ def __prepare(self):
 
 
         self.recorder = self.__recorderklass(bins)
-        self.dispatcher.emit("recorder-ready")
 
         self.mute_preview(self.mute)
         if self.__create_drawing_areas_func: