X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/2185f76a9aeb9fbde23e189cda1db4dcc0949177..0eb72b526bf8bbb011551ecf019f604e17a534f1:/services/fuse/bin/arv-mount diff --git a/services/fuse/bin/arv-mount b/services/fuse/bin/arv-mount index 68cd09c1e8..2663e3def7 100755 --- a/services/fuse/bin/arv-mount +++ b/services/fuse/bin/arv-mount @@ -1,192 +1,10 @@ #!/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 * - -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('--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('--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") - - try: - # Create the request handler - operations = Operations(os.getuid(), os.getgid(), args.encoding) - api = SafeApi(arvados.config) - - 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: - # 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)) - dir_args[0] = e.inode - - e._entries['by_id'] = operations.inodes.add_entry(MagicDirectory(*dir_args)) - 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)] - - if args.exec_args: - # Initialize the fuse connection - llfuse.init(operations, args.mountpoint, opts) - - 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]) - - exit(rc) - else: - 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)) + args = arvados_fuse.command.ArgumentParser().parse_args() + arvados_fuse.command.Mount(args).run()