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[tor-commits] [arm/master] Config option for log regex patterns



commit f773a8a72bcc470cb03e7af1fa1b79e895bbcd9a
Author: Damian Johnson <atagar@xxxxxxxxxxxxxx>
Date:   Sat Jun 18 17:36:03 2011 -0700

    Config option for log regex patterns
    
    Allowing the regular expression log filters to be preconfigured in the user's
    armrrc.
---
 armrc.sample        |    4 ++++
 src/cli/logPanel.py |   19 +++++++++++++++++--
 2 files changed, 21 insertions(+), 2 deletions(-)

diff --git a/armrc.sample b/armrc.sample
index a81c9d8..54e3f7b 100644
--- a/armrc.sample
+++ b/armrc.sample
@@ -76,6 +76,8 @@ features.confirmQuit true
 # maxRefreshRate
 #   rate limiting (in milliseconds) for drawing the log if updates are made
 #   rapidly (for instance, when at the DEBUG runlevel)
+# regex
+#   preconfigured regular expression pattern, up to five will be loaded
 
 features.log.showDateDividers true
 features.log.showDuplicateEntries false
@@ -84,6 +86,8 @@ features.log.maxLinesPerEntry 4
 features.log.prepopulate true
 features.log.prepopulateReadLimit 5000
 features.log.maxRefreshRate 300
+#features.log.regex My First Regex Pattern
+#features.log.regex ^My Second Regex Pattern$
 
 # Paremters for the config panel
 # ---------------------------
diff --git a/src/cli/logPanel.py b/src/cli/logPanel.py
index fc3bfc3..2561416 100644
--- a/src/cli/logPanel.py
+++ b/src/cli/logPanel.py
@@ -48,12 +48,14 @@ DEFAULT_CONFIG = {"features.logFile": "",
                   "features.log.prepopulate": True,
                   "features.log.prepopulateReadLimit": 5000,
                   "features.log.maxRefreshRate": 300,
+                  "features.log.regex": [],
                   "cache.logPanel.size": 1000,
                   "log.logPanel.prepopulateSuccess": log.INFO,
                   "log.logPanel.prepopulateFailed": log.WARN,
                   "log.logPanel.logFileOpened": log.NOTICE,
                   "log.logPanel.logFileWriteFailed": log.ERR,
-                  "log.logPanel.forceDoubleRedraw": log.DEBUG}
+                  "log.logPanel.forceDoubleRedraw": log.DEBUG,
+                  "log.configEntryTypeError": log.NOTICE}
 
 DUPLICATE_MSG = " [%i duplicate%s hidden]"
 
@@ -562,6 +564,9 @@ class LogPanel(panel.Panel, threading.Thread):
     # config options.
     loadLogMessages()
     
+    # regex filters the user has defined
+    self.filterOptions = []
+    
     self._config = dict(DEFAULT_CONFIG)
     
     if config:
@@ -570,6 +575,17 @@ class LogPanel(panel.Panel, threading.Thread):
         "features.log.prepopulateReadLimit": 0,
         "features.log.maxRefreshRate": 10,
         "cache.logPanel.size": 1000})
+      
+      for filter in self._config["features.log.regex"]:
+        # checks if we can't have more filters
+        if len(self.filterOptions) >= MAX_REGEX_FILTERS: break
+        
+        try:
+          re.compile(filter)
+          self.filterOptions.append(filter)
+        except re.error, exc:
+          msg = "Invalid regular expression pattern (%s): %s" % (exc, filter)
+          log.log(self._config["log.configEntryTypeError"], msg)
     
     # collapses duplicate log entries if false, showing only the most recent
     self.showDuplicates = self._config["features.log.showDuplicateEntries"]
@@ -582,7 +598,6 @@ class LogPanel(panel.Panel, threading.Thread):
     self.msgLog = []                    # log entries, sorted by the timestamp
     self.loggedEvents = loggedEvents    # events we're listening to
     self.regexFilter = None             # filter for presented log events (no filtering if None)
-    self.filterOptions = []             # filters the user has input
     self.lastContentHeight = 0          # height of the rendered content when last drawn
     self.logFile = None                 # file log messages are saved to (skipped if None)
     self.scroll = 0



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