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-rw-r--r--src/lib/Server/Core.py4
-rw-r--r--src/lib/Server/FileMonitor.py179
2 files changed, 134 insertions, 49 deletions
diff --git a/src/lib/Server/Core.py b/src/lib/Server/Core.py
index 9201622c2..1360bdf23 100644
--- a/src/lib/Server/Core.py
+++ b/src/lib/Server/Core.py
@@ -45,6 +45,8 @@ class Core(Component):
try:
self.fam = Bcfg2.Server.FileMonitor.available[filemonitor]()
except IOError:
+ logger.error("Failed to instantiate fam driver %s" % filemonitor,
+ exc_info=1)
raise CoreInitError, "failed to instantiate fam driver (used %s)" % \
filemonitor
self.pubspace = {}
@@ -285,7 +287,7 @@ class Core(Component):
plugin.process_statistics(meta, statistics)
except:
logger.error("Plugin %s failed to process stats from %s" \
- % (plugin.name, mc.hostname),
+ % (plugin.name, meta.hostname),
exc_info=1)
logger.info("Client %s reported state %s" % (client_name,
diff --git a/src/lib/Server/FileMonitor.py b/src/lib/Server/FileMonitor.py
index 2ef0bcec9..c8d49f030 100644
--- a/src/lib/Server/FileMonitor.py
+++ b/src/lib/Server/FileMonitor.py
@@ -26,20 +26,7 @@ class Event(object):
'''return static code for event'''
return self.action
-
-class GaminEvent(Event):
- '''
- This class provides an event analogous to
- python-fam events based on gamin sources
- '''
- def __init__(self, request_id, filename, code):
- Event.__init__(self, request_id, filename, code)
- action_map = {GAMCreated: 'created', GAMExists: 'exists',
- GAMChanged: 'changed', GAMDeleted: 'deleted',
- GAMEndExist: 'endExist', GAMMoved: 'moved'}
- if code in action_map:
- self.action = action_map[code]
-
+available = {}
class FileMonitor(object):
'''File Monitor baseclass'''
def __init__(self, debug=False):
@@ -47,6 +34,12 @@ class FileMonitor(object):
self.debug = debug
self.handles = dict()
+ def get_event(self):
+ return None
+
+ def pending(self):
+ return False
+
def fileno(self):
return 0
@@ -94,19 +87,30 @@ class FileMonitor(object):
else:
sleep(0.5)
-class Fam(FileMonitor):
- '''
- The fam object is a set of callbacks for
- file alteration events (FAM support)
- '''
+
+class FamFam(object):
+ '''The fam object is a set of callbacks for file alteration events (FAM support)'''
- def __init__(self, debug=False):
- FileMonitor.__init__(self, debug)
+ def __init__(self):
+ object.__init__(self)
self.fm = _fam.open()
+ self.users = {}
+ self.handles = {}
+ self.debug = False
def fileno(self):
+ '''return fam file handle number'''
return self.fm.fileno()
+ def handle_event_set(self, _):
+ self.Service()
+
+ def handle_events_in_interval(self, interval):
+ now = time()
+ while (time() - now) < interval:
+ if self.Service():
+ now = time()
+
def AddMonitor(self, path, obj):
'''add a monitor to path, installing a callback to obj.HandleEvent'''
mode = os.stat(path)[stat.ST_MODE]
@@ -114,52 +118,80 @@ class Fam(FileMonitor):
handle = self.fm.monitorDirectory(path, None)
else:
handle = self.fm.monitorFile(path, None)
+ self.handles[handle.requestID()] = handle
if obj != None:
- self.handles[handle.requestID()] = obj
+ self.users[handle.requestID()] = obj
return handle.requestID()
- def pending(self):
- return self.fm.pending()
+ def Service(self, interval=0.50):
+ '''Handle all fam work'''
+ count = 0
+ collapsed = 0
+ rawevents = []
+ start = time()
+ now = time()
+ while (time() - now) < interval:
+ if self.fm.pending():
+ while self.fm.pending():
+ count += 1
+ rawevents.append(self.fm.nextEvent())
+ now = time()
+ unique = []
+ bookkeeping = []
+ for event in rawevents:
+ if ShouldIgnore(event):
+ continue
+ if event.code2str() != 'changed':
+ # process all non-change events
+ unique.append(event)
+ else:
+ if (event.filename, event.requestID) not in bookkeeping:
+ bookkeeping.append((event.filename, event.requestID))
+ unique.append(event)
+ else:
+ collapsed += 1
+ for event in unique:
+ if event.requestID in self.users:
+ try:
+ self.users[event.requestID].HandleEvent(event)
+ except:
+ logger.error("handling event for file %s" % (event.filename), exc_info=1)
+ end = time()
+ logger.info("Processed %s fam events in %03.03f seconds. %s coalesced" %
+ (count, (end - start), collapsed))
+ return count
- def get_event(self):
- return self.fm.nextEvent()
-class Gamin(FileMonitor):
+
+class Fam(FileMonitor):
'''
The fam object is a set of callbacks for
- file alteration events (Gamin support)
+ file alteration events (FAM support)
'''
+
def __init__(self, debug=False):
FileMonitor.__init__(self, debug)
- self.mon = WatchMonitor()
- self.counter = 0
- self.events = []
+ self.fm = _fam.open()
def fileno(self):
- return self.mon.get_fd()
-
- def queue(self, path, action, request_id):
- '''queue up the event for later handling'''
- self.events.append(GaminEvent(request_id, path, action))
+ return self.fm.fileno()
def AddMonitor(self, path, obj):
'''add a monitor to path, installing a callback to obj.HandleEvent'''
- handle = self.counter
- self.counter += 1
mode = os.stat(path)[stat.ST_MODE]
if stat.S_ISDIR(mode):
- self.mon.watch_directory(path, self.queue, handle)
+ handle = self.fm.monitorDirectory(path, None)
else:
- self.mon.watch_file(path, self.queue, handle)
- self.handles[handle] = obj
- return handle
+ handle = self.fm.monitorFile(path, None)
+ if obj != None:
+ self.handles[handle.requestID()] = obj
+ return handle.requestID()
def pending(self):
- return self.mon.event_pending()
+ return self.fm.pending()
def get_event(self):
- self.mon.handle_one_event()
- return self.events.pop()
+ return self.fm.nextEvent()
class Pseudo(FileMonitor):
'''
@@ -181,7 +213,7 @@ class Pseudo(FileMonitor):
'''add a monitor to path, installing a callback to obj.HandleEvent'''
handleID = len(self.handles.keys())
mode = os.stat(path)[stat.ST_MODE]
- handle = GaminEvent(handleID, path, 'exists')
+ handle = Event(handleID, path, 'exists')
if stat.S_ISDIR(mode):
dirList = os.listdir(path)
self.pending_events.append(handle)
@@ -195,16 +227,67 @@ class Pseudo(FileMonitor):
return handleID
-available = {}
try:
from gamin import WatchMonitor, GAMCreated, GAMExists, GAMEndExist, GAMChanged, GAMDeleted, GAMMoved
+
+ class GaminEvent(Event):
+ '''
+ This class provides an event analogous to
+ python-fam events based on gamin sources
+ '''
+ def __init__(self, request_id, filename, code):
+ Event.__init__(self, request_id, filename, code)
+ action_map = {GAMCreated: 'created', GAMExists: 'exists',
+ GAMChanged: 'changed', GAMDeleted: 'deleted',
+ GAMEndExist: 'endExist', GAMMoved: 'moved'}
+ if code in action_map:
+ self.action = action_map[code]
+
+ class Gamin(FileMonitor):
+ '''
+ The fam object is a set of callbacks for
+ file alteration events (Gamin support)
+ '''
+ def __init__(self, debug=False):
+ FileMonitor.__init__(self, debug)
+ self.mon = WatchMonitor()
+ self.counter = 0
+ self.events = []
+
+ def fileno(self):
+ return self.mon.get_fd()
+
+ def queue(self, path, action, request_id):
+ '''queue up the event for later handling'''
+ self.events.append(GaminEvent(request_id, path, action))
+
+ def AddMonitor(self, path, obj):
+ '''add a monitor to path, installing a callback to obj.HandleEvent'''
+ handle = self.counter
+ self.counter += 1
+ mode = os.stat(path)[stat.ST_MODE]
+ if stat.S_ISDIR(mode):
+ self.mon.watch_directory(path, self.queue, handle)
+ else:
+ self.mon.watch_file(path, self.queue, handle)
+ self.handles[handle] = obj
+ return handle
+
+ def pending(self):
+ return self.mon.event_pending()
+
+ def get_event(self):
+ self.mon.handle_one_event()
+ return self.events.pop()
+
available['gamin'] = Gamin
except ImportError:
# fall back to _fam
pass
+
try:
import _fam
- available['fam'] = Fam
+ available['fam'] = FamFam
except ImportError:
pass
available['pseudo'] = Pseudo
generated by cgit v1.2.3-1-g7c22 (git 2.25.1) at 2024-07-05 19:34:30 +0000