#!/usr/bin/env python
+# Copyright (C) The Arvados Authors. All rights reserved.
+#
+# SPDX-License-Identifier: AGPL-3.0
-import argparse
-import arvados
-import daemon
-import logging
-import os
-import signal
-import subprocess
-import time
-
-import arvados.commands._util as arv_cmd
-from arvados_fuse import *
-from arvados.safeapi import ThreadSafeApiCache
-import arvados.keep
-
-logger = logging.getLogger('arvados.arv-mount')
+import arvados_fuse.command
if __name__ == '__main__':
- # Handle command line parameters
- parser = argparse.ArgumentParser(
- parents=[arv_cmd.retry_opt],
- description='''Mount Keep data under the local filesystem. Default mode is --home''',
- epilog="""
-Note: When using the --exec feature, you must either specify the
-mountpoint before --exec, or mark the end of your --exec arguments
-with "--".
-""")
- parser.add_argument('mountpoint', type=str, help="""Mount point.""")
- parser.add_argument('--allow-other', action='store_true',
- help="""Let other users read the mount""")
-
- mount_mode = parser.add_mutually_exclusive_group()
-
- mount_mode.add_argument('--all', action='store_true', help="""Mount a subdirectory for each mode: home, shared, by_tag, by_id (default).""")
- mount_mode.add_argument('--home', action='store_true', help="""Mount only the user's home project.""")
- mount_mode.add_argument('--shared', action='store_true', help="""Mount only list of projects shared with the user.""")
- mount_mode.add_argument('--by-tag', action='store_true',
- help="""Mount subdirectories listed by tag.""")
- mount_mode.add_argument('--by-id', action='store_true',
- help="""Mount subdirectories listed by portable data hash or uuid.""")
- mount_mode.add_argument('--by-pdh', action='store_true',
- help="""Mount subdirectories listed by portable data hash.""")
- mount_mode.add_argument('--project', type=str, help="""Mount a specific project.""")
- mount_mode.add_argument('--collection', type=str, help="""Mount only the specified collection.""")
-
- 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('--encoding', type=str, help="Character encoding to use for filesystem, default is utf-8 (see Python codec registry for list of available encodings)", default="utf-8")
-
- parser.add_argument('--file-cache', type=int, help="File data cache size, in bytes (default 256MiB)", default=256*1024*1024)
- parser.add_argument('--directory-cache', type=int, help="Directory data cache size, in bytes (default 128MiB)", default=128*1024*1024)
-
- parser.add_argument('--read-only', action='store_false', help="Mount will be read only (default)", dest="enable_write", default=False)
- parser.add_argument('--read-write', action='store_true', help="Mount will be read-write", dest="enable_write", 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 log handler based on command-line switches.
- if args.logfile:
- log_handler = logging.FileHandler(args.logfile)
- elif daemon_ctx:
- log_handler = logging.NullHandler()
- else:
- log_handler = None
-
- if log_handler is not None:
- arvados.logger.removeHandler(arvados.log_handler)
- arvados.logger.addHandler(log_handler)
-
- if args.debug:
- arvados.logger.setLevel(logging.DEBUG)
- logger.debug("arv-mount debugging enabled")
-
- logger.info("enable write is %s", args.enable_write)
-
- try:
- # Create the request handler
- operations = Operations(os.getuid(),
- os.getgid(),
- encoding=args.encoding,
- inode_cache=InodeCache(cap=args.directory_cache),
- enable_write=args.enable_write)
- api = ThreadSafeApiCache(apiconfig=arvados.config.settings(),
- keep_params={"block_cache": arvados.keep.KeepBlockCache(args.file_cache)})
-
- usr = api.users().current().execute(num_retries=args.retries)
- now = time.time()
- dir_class = None
- dir_args = [llfuse.ROOT_INODE, operations.inodes, api, args.retries]
- if args.by_id or args.by_pdh:
- # Set up the request handler with the 'magic directory' at the root
- dir_class = MagicDirectory
- elif args.by_tag:
- dir_class = TagsDirectory
- elif args.shared:
- dir_class = SharedDirectory
- dir_args.append(usr)
- elif args.home:
- dir_class = ProjectDirectory
- dir_args.append(usr)
- dir_args.append(True)
- elif args.collection is not None:
- # Set up the request handler with the collection at the root
- dir_class = CollectionDirectory
- dir_args.append(args.collection)
- elif args.project is not None:
- dir_class = ProjectDirectory
- dir_args.append(api.groups().get(uuid=args.project).execute(
- num_retries=args.retries))
-
- if dir_class is not None:
- operations.inodes.add_entry(dir_class(*dir_args))
- else:
- e = operations.inodes.add_entry(Directory(llfuse.ROOT_INODE, operations.inodes))
- dir_args[0] = e.inode
-
- e._entries['by_id'] = operations.inodes.add_entry(MagicDirectory(*dir_args, pdh_only=True if args.by_pdh else False))
-
- e._entries['by_tag'] = operations.inodes.add_entry(TagsDirectory(*dir_args))
-
- dir_args.append(usr)
- dir_args.append(True)
- e._entries['home'] = operations.inodes.add_entry(ProjectDirectory(*dir_args))
- e._entries['shared'] = operations.inodes.add_entry(SharedDirectory(*dir_args))
-
- text = '''
-Welcome to Arvados! This directory provides file system access to files and objects
-available on the Arvados installation located at '{}'
-using credentials for user '{}'.
-
-From here, the following directories are available:
-
- by_id/ Access to Keep collections by uuid or portable data hash (see by_id/README for details).
- by_tag/ Access to Keep collections organized by tag.
- home/ The contents of your home project.
- shared/ Projects shared with you.
-'''.format(arvados.config.get('ARVADOS_API_HOST'), usr['email'])
-
- e._entries["README"] = operations.inodes.add_entry(StringFile(e.inode, text, now))
-
-
- 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']
- if getattr(args, optname)]
-
- # Increase default read/write size from 4KiB to 128KiB
- opts += ["big_writes", "max_read=131072"]
-
- if args.exec_args:
- # Initialize the fuse connection
- llfuse.init(operations, args.mountpoint, opts)
-
- # Subscribe to change events from API server
- if not args.by_pdh:
- operations.listen_for_events(api)
-
- t = threading.Thread(None, lambda: llfuse.main())
- t.start()
-
- # wait until the driver is finished initializing
- operations.initlock.wait()
-
- rc = 255
- try:
- sp = subprocess.Popen(args.exec_args, shell=False)
-
- # forward signals to the process.
- signal.signal(signal.SIGINT, lambda signum, frame: sp.send_signal(signum))
- signal.signal(signal.SIGTERM, lambda signum, frame: sp.send_signal(signum))
- signal.signal(signal.SIGQUIT, lambda signum, frame: sp.send_signal(signum))
-
- # wait for process to complete.
- rc = sp.wait()
-
- # restore default signal handlers.
- signal.signal(signal.SIGINT, signal.SIG_DFL)
- signal.signal(signal.SIGTERM, signal.SIG_DFL)
- signal.signal(signal.SIGQUIT, signal.SIG_DFL)
- except Exception as 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])
- operations.destroy()
-
- exit(rc)
- else:
- try:
- llfuse.init(operations, args.mountpoint, opts)
-
- # Subscribe to change events from API server
- operations.listen_for_events(api)
-
- llfuse.main()
- except Exception as e:
- logger.exception('arv-mount: exception during mount')
- exit(getattr(e, 'errno', 1))
- finally:
- operations.destroy()
+ args = arvados_fuse.command.ArgumentParser().parse_args()
+ arvados_fuse.command.Mount(args).run()
projects / arvados.git / blobdiff