1 files changed, 64 insertions, 12 deletions
diff --git a/glances/plugins/glances_alert.py b/glances/plugins/glances_alert.py
index 16a88b88..1bafda9e 100644
--- a/glances/plugins/glances_alert.py
+++ b/glances/plugins/glances_alert.py
@@ -22,8 +22,58 @@
 from datetime import datetime
 
 from glances.logs import glances_logs
+from glances.thresholds import glances_thresholds
+from glances.logger import logger
 from glances.plugins.glances_plugin import GlancesPlugin
 
+# Static decision tree for the global alert message
+# - msg: Message to be displayed (result of the decision tree)
+# - threasholds: a list of stats to take into account
+# - thresholds_min: minimal value of the threasholds sum
+tree = [{'msg': 'No warning or critical alert detected',
+         'thresholds': [],
+         'thresholds_min': 0},
+        {'msg': 'High CPU user mode',
+         'thresholds': ['cpu_user'],
+         'thresholds_min': 2},
+        {'msg': 'High CPU kernel usage',
+         'thresholds': ['cpu_system'],
+         'thresholds_min': 2},
+        {'msg': 'High CPU I/O waiting',
+         'thresholds': ['cpu_iowait'],
+         'thresholds_min': 2},
+        {'msg': 'Large CPU stolen time. System running the hypervisor is too busy.',
+         'thresholds': ['cpu_steal'],
+         'thresholds_min': 2},
+        {'msg': 'High CPU niced value',
+         'thresholds': ['cpu_niced'],
+         'thresholds_min': 2},
+        {'msg': 'System overloaded in the last 5 minutes',
+         'thresholds': ['load'],
+         'thresholds_min': 2},
+        {'msg': 'High swap (paging) usage',
+         'thresholds': ['memswap'],
+         'thresholds_min': 2},
+        {'msg': 'High memory consumption',
+         'thresholds': ['mem'],
+         'thresholds_min': 2},
+        ]
+
+
+def global_message():
+    """Parse the decision tree and return the message
+    corresponding to the current threasholds values"""
+    # Compute the weight for each item in the tree
+    current_thresholds = glances_thresholds.get()
+    for i in tree:
+        i['weight'] = sum([current_thresholds[t].value() for t in i['thresholds'] if t in current_thresholds])
+    themax = max(tree, key=lambda d: d['weight'])
+    if themax['weight'] >= themax['thresholds_min']:
+        # Check if the weight is > to the minimal threashold value
+        return themax['msg']
+    else:
+        return tree[0]['msg']
+
 
 class Plugin(GlancesPlugin):
 
@@ -53,6 +103,10 @@ class Plugin(GlancesPlugin):
         """Nothing to do here. Just return the global glances_log."""
         # Set the stats to the glances_logs
         self.stats = glances_logs.get()
+        # Define the global message thanks to the current thresholds
+        # and the decision tree
+        # !!! Call directly in the msg_curse function
+        # global_message()
 
     def msg_curse(self, args=None):
         """Return the dict to display in the curse interface."""
@@ -65,19 +119,17 @@ class Plugin(GlancesPlugin):
 
         # Build the string message
         # Header
-        if not self.stats:
-            msg = 'No warning or critical alert detected'
-            ret.append(self.curse_add_line(msg, "TITLE"))
-        else:
+        ret.append(self.curse_add_line(global_message(), "TITLE"))
+        if self.stats:
             # Header
-            msg = 'Warning or critical alerts'
-            ret.append(self.curse_add_line(msg, "TITLE"))
-            logs_len = glances_logs.len()
-            if logs_len > 1:
-                msg = ' (last {} entries)'.format(logs_len)
-            else:
-                msg = ' (one entry)'
-            ret.append(self.curse_add_line(msg, "TITLE"))
+            # msg = 'Warning or critical alerts'
+            # ret.append(self.curse_add_line(msg, "TITLE"))
+            # logs_len = glances_logs.len()
+            # if logs_len > 1:
+            #     msg = ' (last {} entries)'.format(logs_len)
+            # else:
+            #     msg = ' (one entry)'
+            # ret.append(self.curse_add_line(msg, "TITLE"))
             # Loop over alerts
             for alert in self.stats:
                 # New line