import os
import sys
import traceback
-import BaseHTTPServer
-import simplejson
+import SocketServer
import errno
import logging
+import signal
from optparse import OptionParser
-
from ganeti import backend
from ganeti import logger
from ganeti import constants
from ganeti import objects
from ganeti import errors
+from ganeti import jstore
from ganeti import ssconf
+from ganeti import http
from ganeti import utils
-_EXIT_GANETI_NODED = False
+queue_lock = None
+
+
+def _RequireJobQueueLock(fn):
+ """Decorator for job queue manipulating functions.
+
+ """
+ def wrapper(*args, **kwargs):
+ # Locking in exclusive, blocking mode because there could be several
+ # children running at the same time. Waiting up to 10 seconds.
+ queue_lock.Exclusive(blocking=True, timeout=10)
+ try:
+ return fn(*args, **kwargs)
+ finally:
+ queue_lock.Unlock()
+ return wrapper
-class ServerObject(BaseHTTPServer.BaseHTTPRequestHandler):
+
+class NodeDaemonRequestHandler(http.HTTPRequestHandler):
"""The server implementation.
This class holds all methods exposed over the RPC interface.
"""
- def do_PUT(self):
- """Handle a post request.
+ def HandleRequest(self):
+ """Handle a request.
"""
+ if self.command.upper() != "PUT":
+ raise http.HTTPBadRequest()
+
path = self.path
if path.startswith("/"):
path = path[1:]
- logging.debug("ServerObject: received call '%s'", path)
- mname = "perspective_%s" % path
- if not hasattr(self, mname):
- self.send_error(404)
- return False
- method = getattr(self, mname)
- try:
- body_length = int(self.headers.get('Content-Length', '0'))
- except ValueError:
- self.send_error(400, 'No Content-Length header or invalid format')
- return False
+ method = getattr(self, "perspective_%s" % path, None)
+ if method is None:
+ raise httperror.HTTPNotFound()
try:
- body = self.rfile.read(body_length)
- except socket.error, err:
- logger.Error("Socket error while reading: %s" % str(err))
- return
- try:
- params = simplejson.loads(body)
- logging.debug("ServerObject: method parameters: %s", params)
- result = method(params)
- payload = simplejson.dumps(result)
+ try:
+ return method(self.post_data)
+ except:
+ logging.exception("Error in RPC call")
+ raise
except errors.QuitGanetiException, err:
- global _EXIT_GANETI_NODED
- _EXIT_GANETI_NODED = True
- if isinstance(err.args, tuple) and len(err.args) == 2:
- if err.args[0]:
- self.send_error(500, "Error: %s" % str(err[1]))
- else:
- payload = simplejson.dumps(err.args[1])
- else:
- self.log_message('QuitGanetiException Usage Error')
- self.send_error(500, "Error: %s" % str(err))
- except Exception, err:
- self.send_error(500, "Error: %s" % str(err))
- return False
- self.send_response(200)
- self.send_header('Content-Length', str(len(payload)))
- self.end_headers()
- self.wfile.write(payload)
- return True
-
- def log_message(self, format, *args):
- """Log a request to the log.
-
- This is the same as the parent, we just log somewhere else.
-
- """
- msg = ("%s - - [%s] %s" %
- (self.address_string(),
- self.log_date_time_string(),
- format % args))
- logging.debug(msg)
+ # Tell parent to quit
+ os.kill(self.server.noded_pid, signal.SIGTERM)
# the new block devices --------------------------
"""Promote this node to master status.
"""
- return backend.StartMaster()
+ return backend.StartMaster(params[0])
@staticmethod
def perspective_node_stop_master(params):
"""Demote this node from master status.
"""
- return backend.StopMaster()
+ return backend.StopMaster(params[0])
@staticmethod
def perspective_node_leave_cluster(params):
"""
return backend.UploadFile(*params)
+ @staticmethod
+ def perspective_master_info(params):
+ """Query master information.
+
+ """
+ return backend.GetMasterInfo()
# os -----------------------
duration = params[0]
return utils.TestDelay(duration)
+ # file storage ---------------
+
@staticmethod
def perspective_file_storage_dir_create(params):
"""Create the file storage directory.
return backend.RenameFileStorageDir(old_file_storage_dir,
new_file_storage_dir)
+ # jobs ------------------------
+
+ @staticmethod
+ @_RequireJobQueueLock
+ def perspective_jobqueue_update(params):
+ """Update job queue.
+
+ """
+ (file_name, content) = params
+ return backend.JobQueueUpdate(file_name, content)
+
+ @staticmethod
+ @_RequireJobQueueLock
+ def perspective_jobqueue_purge(params):
+ """Purge job queue.
+
+ """
+ return backend.JobQueuePurge()
+
+ @staticmethod
+ @_RequireJobQueueLock
+ def perspective_jobqueue_rename(params):
+ """Rename a job queue file.
+
+ """
+ (old, new) = params
+
+ return backend.JobQueueRename(old, new)
+
+
+class NodeDaemonHttpServer(http.HTTPServer):
+ def __init__(self, server_address):
+ http.HTTPServer.__init__(self, server_address, NodeDaemonRequestHandler)
+ self.noded_pid = os.getpid()
+
+ def serve_forever(self):
+ """Handle requests until told to quit."""
+ sighandler = utils.SignalHandler([signal.SIGINT, signal.SIGTERM])
+ try:
+ while not sighandler.called:
+ self.handle_request()
+ # TODO: There could be children running at this point
+ finally:
+ sighandler.Reset()
+
+
+class ForkingHTTPServer(SocketServer.ForkingMixIn, NodeDaemonHttpServer):
+ """Forking HTTP Server.
+
+ This inherits from ForkingMixIn and HTTPServer in order to fork for each
+ request we handle. This allows more requests to be handled concurrently.
+
+ """
+
def ParseOptions():
"""Parse the command line options.
"""Main function for the node daemon.
"""
+ global queue_lock
+
options, args = ParseOptions()
utils.debug = options.debug
for fname in (constants.SSL_CERT_FILE,):
if options.fork:
utils.Daemonize(logfile=constants.LOG_NODESERVER)
- logger.SetupDaemon(logfile=constants.LOG_NODESERVER, debug=options.debug,
- stderr_logging=not options.fork)
+ utils.WritePidFile(constants.NODED_PID)
+
+ logger.SetupLogging(logfile=constants.LOG_NODESERVER, debug=options.debug,
+ stderr_logging=not options.fork)
logging.info("ganeti node daemon startup")
- global _EXIT_GANETI_NODED
+ # Prepare job queue
+ queue_lock = jstore.InitAndVerifyQueue(must_lock=False)
- httpd = BaseHTTPServer.HTTPServer(('', port), ServerObject)
- while (not _EXIT_GANETI_NODED):
- httpd.handle_request()
+ if options.fork:
+ server = ForkingHTTPServer(('', port))
+ else:
+ server = NodeDaemonHttpServer(('', port))
+
+ try:
+ server.serve_forever()
+ finally:
+ utils.RemovePidFile(constants.NODED_PID)
if __name__ == '__main__':
projects / ganeti-local / blobdiff