import argparse
import arvados
import daemon
+import logging
import os
import signal
import subprocess
from arvados_fuse import *
+logger = logging.getLogger('arvados.arv-mount')
+
if __name__ == '__main__':
# Handle command line parameters
parser = argparse.ArgumentParser(
collections on the server.""")
parser.add_argument('--groups', action='store_true', help="""Mount as a virtual directory consisting of subdirectories representing groups on the server.""")
parser.add_argument('--debug', action='store_true', help="""Debug mode""")
+ parser.add_argument('--logfile', help="""Write debug logs and errors to the specified file (default stderr).""")
parser.add_argument('--foreground', action='store_true', help="""Run in foreground (default is to daemonize unless --exec specified)""", default=False)
parser.add_argument('--exec', type=str, nargs=argparse.REMAINDER,
dest="exec_args", metavar=('command', 'args', '...', '--'),
help="""Mount, run a command, then unmount and exit""")
args = parser.parse_args()
+ args.mountpoint = os.path.realpath(args.mountpoint)
+ if args.logfile:
+ args.logfile = os.path.realpath(args.logfile)
+
+ # Daemonize as early as possible, so we don't accidentally close
+ # file descriptors we're using.
+ if not (args.exec_args or args.foreground):
+ os.chdir(args.mountpoint)
+ daemon_ctx = daemon.DaemonContext(working_directory='.')
+ daemon_ctx.open()
+ else:
+ daemon_ctx = None
+
+ # Configure a logger based on command-line switches.
+ # If we're using a contemporary Python SDK (mid-August 2014),
+ # configure the arvados hierarchy logger.
+ # Otherwise, configure the program root logger.
+ base_logger = getattr(arvados, 'logger', None)
+
+ if args.logfile:
+ log_handler = logging.FileHandler(args.logfile)
+ elif daemon_ctx:
+ log_handler = logging.NullHandler()
+ elif base_logger:
+ log_handler = arvados.log_handler
+ else:
+ log_handler = logging.StreamHandler()
- # Create the request handler
- operations = Operations(os.getuid(), os.getgid(), args.debug)
+ if base_logger is None:
+ base_logger = logging.getLogger()
+ else:
+ base_logger.removeHandler(arvados.log_handler)
+ base_logger.addHandler(log_handler)
if args.debug:
- arvados.config.settings()['ARVADOS_DEBUG'] = 'true'
+ base_logger.setLevel(logging.DEBUG)
+ logger.debug("arv-mount debugging enabled")
- if args.groups:
+ try:
+ # Create the request handler
+ operations = Operations(os.getuid(), os.getgid())
api = arvados.api('v1')
- e = operations.inodes.add_entry(GroupsDirectory(llfuse.ROOT_INODE, operations.inodes, api))
- elif args.tags:
- api = arvados.api('v1')
- e = operations.inodes.add_entry(TagsDirectory(llfuse.ROOT_INODE, operations.inodes, api))
- elif args.collection != None:
- # Set up the request handler with the collection at the root
- e = operations.inodes.add_entry(CollectionDirectory(llfuse.ROOT_INODE, operations.inodes, args.collection))
- else:
- # Set up the request handler with the 'magic directory' at the root
- operations.inodes.add_entry(MagicDirectory(llfuse.ROOT_INODE, operations.inodes))
+
+ if args.groups:
+ e = operations.inodes.add_entry(GroupsDirectory(llfuse.ROOT_INODE, operations.inodes, api))
+ elif args.tags:
+ e = operations.inodes.add_entry(TagsDirectory(llfuse.ROOT_INODE, operations.inodes, api))
+ elif args.collection != None:
+ # Set up the request handler with the collection at the root
+ e = operations.inodes.add_entry(CollectionDirectory(llfuse.ROOT_INODE, operations.inodes, args.collection))
+ else:
+ # Set up the request handler with the 'magic directory' at the root
+ operations.inodes.add_entry(MagicDirectory(llfuse.ROOT_INODE, operations.inodes))
+ except Exception:
+ logger.exception("arv-mount: exception during API setup")
+ exit(1)
# FUSE options, see mount.fuse(8)
opts = [optname for optname in ['allow_other', 'debug']
signal.signal(signal.SIGINT, signal.SIG_DFL)
signal.signal(signal.SIGTERM, signal.SIG_DFL)
signal.signal(signal.SIGQUIT, signal.SIG_DFL)
- except OSError as e:
- sys.stderr.write('arv-mount: %s -- exec %s\n' % (str(e), args.exec_args))
- rc = e.errno
except Exception as e:
- sys.stderr.write('arv-mount: %s\n' % str(e))
+ logger.exception('arv-mount: exception during exec %s',
+ args.exec_args)
+ try:
+ rc = e.errno
+ except AttributeError:
+ pass
finally:
subprocess.call(["fusermount", "-u", "-z", args.mountpoint])
exit(rc)
else:
- os.chdir(args.mountpoint)
- if not args.foreground:
- daemon_ctx = daemon.DaemonContext(working_directory='.')
- daemon_ctx.open()
- llfuse.init(operations, '.', opts)
- llfuse.main()
+ try:
+ llfuse.init(operations, args.mountpoint, opts)
+ llfuse.main()
+ except Exception as e:
+ logger.exception('arv-mount: exception during mount')
+ exit(getattr(e, 'errno', 1))