Add a configuration key to set the gaph ouput folder --output-history - issue #428

glances/core/glances_main.py

@@ -22,6 +22,8 @@
 # Import system libs
 import argparse
 import sys
+import os
+import tempfile
 
 # Import Glances libs
 from glances.core.glances_config import Config
@@ -34,6 +36,7 @@ class GlancesMain(object):
 
     # Default stats' refresh time is 3 seconds
     refresh_time = 3
+
     # Set the default cache lifetime to 1 second (only for server)
     # !!! Todo: configuration from the command line
     cached_time = 1
@@ -61,10 +64,6 @@ class GlancesMain(object):
         parser.add_argument('-C', '--config', dest='conf_file',
                             help=_('path to the configuration file'))
         # Enable or disable option on startup
-        parser.add_argument('--enable-history', action='store_true', default=False,
-                            dest='enable_history', help=_('enable the history mode'))
-        parser.add_argument('--disable-bold', action='store_false', default=True,
-                            dest='disable_bold', help=_('disable bold mode in the terminal'))
         parser.add_argument('--disable-network', action='store_true', default=False,
                             dest='disable_network', help=_('disable network module'))
         parser.add_argument('--disable-diskio', action='store_true', default=False,
@@ -81,6 +80,12 @@ class GlancesMain(object):
                             dest='disable_process_extended', help=_('disable extended stats on top process'))
         parser.add_argument('--disable-log', action='store_true', default=False,
                             dest='disable_log', help=_('disable log module'))
+        parser.add_argument('--disable-bold', action='store_false', default=True,
+                            dest='disable_bold', help=_('disable bold mode in the terminal'))
+        parser.add_argument('--enable-history', action='store_true', default=False,
+                            dest='enable_history', help=_('enable the history mode'))
+        parser.add_argument('--path-history', default=tempfile.gettempdir(),
+                            dest='path_history', help=_('Set the export path for graph history'))
         # CSV output feature
         parser.add_argument('--output-csv', default=None,
                             dest='output_csv', help=_('export stats to a CSV file'))
@@ -187,6 +192,13 @@ class GlancesMain(object):
             logger.critical(_("Process filter is only available in standalone mode"))
             sys.exit(2)
 
+        # Check graph output path
+        if args.enable_history and args.path_history is not None:
+            if not os.access(args.path_history, os.W_OK):
+                logger.critical(_("History output path (%s) do not exist or is not writable") % args.path_history)
+                sys.exit(2)
+            logger.info(_("History output path is %s") % args.path_history)
+
         return args
 
     def __hash_password(self, plain_password):

glances/outputs/glances_curses.py

@@ -184,12 +184,12 @@ class GlancesCurses(object):
         self.reset_history_tag = False
         self.history_tag = False
         if args.enable_history:
-            logger.info('Stats history enabled')
+            logger.info('Stats history enabled with output path %s' % args.path_history)
             from glances.outputs.glances_history import GlancesHistory
-            self.glances_history = GlancesHistory()
+            self.glances_history = GlancesHistory(args.path_history)
             if not self.glances_history.graph_enabled():
                 args.enable_history = False
-                logger.error('Stats history disabled because graph lib is not available')
+                logger.error('Stats history disabled because MatPlotLib is not installed')
 
     def set_cursor(self, value):
         """Configure the cursor 

glances/outputs/glances_history.py

@@ -21,7 +21,6 @@
 
 # Import system lib
 import os
-import tempfile
 
 # Import Glances lib
 from glances.core.glances_globals import logger
@@ -43,12 +42,7 @@ class GlancesHistory(object):
 
     """This class define the object to manage stats history"""
 
-    def __init__(self, output_folder=tempfile.gettempdir()):
-        # !!! MINUS: matplotlib footprint (mem/cpu) => Fork process ?
-        # !!! MINUS: Mem used to store history
-        # !!! TODO: sampling before graph => Usefull ?
-        # !!! TODO: do not display first two point (glances is running)
-        # !!! TODO: replace /tmp by a cross platform way to get /tmp folder
+    def __init__(self, output_folder):
         self.output_folder = output_folder
 
     def get_output_folder(self):
@@ -87,21 +81,21 @@ class GlancesHistory(object):
 
                 # Label
                 plt.title("%s stats" % p)
-                
+
                 handles = []
                 for i in stats.get_plugin(p).get_items_history_list():
                     handles.append(plt.Rectangle((0, 0), 1, 1, fc=i['color'], ec=i['color'], linewidth=1))
                 labels = [i['name'] for i in stats.get_plugin(p).get_items_history_list()]
-                plt.legend(handles, labels, loc=1, prop={'size':9})
+                plt.legend(handles, labels, loc=1, prop={'size': 9})
                 formatter = dates.DateFormatter('%H:%M:%S')
                 ax.xaxis.set_major_formatter(formatter)
                 # ax.set_ylabel('%')
 
                 # Draw the stats
                 for i in stats.get_plugin(p).get_items_history_list():
-                    ax.plot_date(h['date'], h[i['name']], 
-                                 i['color'], 
-                                 label='%s' % i['name'], 
+                    ax.plot_date(h['date'], h[i['name']],
+                                 i['color'],
+                                 label='%s' % i['name'],
                                  xdate=True, ydate=False)
 
                 # Save and display