-#!/usr/bin/env python
+#!/usr/bin/env python3
+# Copyright (C) The Arvados Authors. All rights reserved.
+#
+# SPDX-License-Identifier: Apache-2.0
-import argparse
-import hashlib
-import os
-import re
-import string
import sys
-import logging
-import arvados
-import arvados.commands._util as arv_cmd
+from arvados.commands.get import main
-logger = logging.getLogger('arvados.arv-get')
-
-def abort(msg, code=1):
- print >>sys.stderr, "arv-get:", msg
- exit(code)
-
-parser = argparse.ArgumentParser(
- description='Copy data from Keep to a local file or pipe.',
- parents=[arv_cmd.retry_opt])
-parser.add_argument('locator', type=str,
- help="""
-Collection locator, optionally with a file path or prefix.
-""")
-parser.add_argument('destination', type=str, nargs='?', default='-',
- help="""
-Local file or directory where the data is to be written. Default: stdout.
-""")
-group = parser.add_mutually_exclusive_group()
-group.add_argument('--progress', action='store_true',
- help="""
-Display human-readable progress on stderr (bytes and, if possible,
-percentage of total data size). This is the default behavior when it
-is not expected to interfere with the output: specifically, stderr is
-a tty _and_ either stdout is not a tty, or output is being written to
-named files rather than stdout.
-""")
-group.add_argument('--no-progress', action='store_true',
- help="""
-Do not display human-readable progress on stderr.
-""")
-group.add_argument('--batch-progress', action='store_true',
- help="""
-Display machine-readable progress on stderr (bytes and, if known,
-total data size).
-""")
-group = parser.add_mutually_exclusive_group()
-group.add_argument('--hash',
- help="""
-Display the hash of each file as it is read from Keep, using the given
-hash algorithm. Supported algorithms include md5, sha1, sha224,
-sha256, sha384, and sha512.
-""")
-group.add_argument('--md5sum', action='store_const',
- dest='hash', const='md5',
- help="""
-Display the MD5 hash of each file as it is read from Keep.
-""")
-parser.add_argument('-n', action='store_true',
- help="""
-Do not write any data -- just read from Keep, and report md5sums if
-requested.
-""")
-parser.add_argument('-r', action='store_true',
- help="""
-Retrieve all files in the specified collection/prefix. This is the
-default behavior if the "locator" argument ends with a forward slash.
-""")
-group = parser.add_mutually_exclusive_group()
-group.add_argument('-f', action='store_true',
- help="""
-Overwrite existing files while writing. The default behavior is to
-refuse to write *anything* if any of the output files already
-exist. As a special case, -f is not needed to write to stdout.
-""")
-group.add_argument('--skip-existing', action='store_true',
- help="""
-Skip files that already exist. The default behavior is to refuse to
-write *anything* if any files exist that would have to be
-overwritten. This option causes even devices, sockets, and fifos to be
-skipped.
-""")
-
-args = parser.parse_args()
-
-if args.locator[-1] == os.sep:
- args.r = True
-if (args.r and
- not args.n and
- not (args.destination and
- os.path.isdir(args.destination))):
- parser.error('Destination is not a directory.')
-if not args.r and (os.path.isdir(args.destination) or
- args.destination[-1] == os.path.sep):
- args.destination = os.path.join(args.destination,
- os.path.basename(args.locator))
- logger.debug("Appended source file name to destination directory: %s",
- args.destination)
-
-if args.destination == '/dev/stdout':
- args.destination = "-"
-
-if args.destination == '-':
- # Normally you have to use -f to write to a file (or device) that
- # already exists, but "-" and "/dev/stdout" are common enough to
- # merit a special exception.
- args.f = True
-else:
- args.destination = args.destination.rstrip(os.sep)
-
-# Turn on --progress by default if stderr is a tty and output is
-# either going to a named file, or going (via stdout) to something
-# that isn't a tty.
-if (not (args.batch_progress or args.no_progress)
- and sys.stderr.isatty()
- and (args.destination != '-'
- or not sys.stdout.isatty())):
- args.progress = True
-
-
-r = re.search(r'^(.*?)(/.*)?$', args.locator)
-collection = r.group(1)
-get_prefix = r.group(2)
-if args.r and not get_prefix:
- get_prefix = os.sep
-api_client = arvados.api('v1')
-reader = arvados.CollectionReader(collection, num_retries=args.retries)
-
-if not get_prefix:
- if not args.n:
- open_flags = os.O_CREAT | os.O_WRONLY
- if not args.f:
- open_flags |= os.O_EXCL
- try:
- if args.destination == "-":
- sys.stdout.write(reader.manifest_text())
- else:
- out_fd = os.open(args.destination, open_flags)
- with os.fdopen(out_fd, 'wb') as out_file:
- out_file.write(reader.manifest_text())
- except (IOError, OSError) as error:
- abort("can't write to '{}': {}".format(args.destination, error))
- except (arvados.errors.ApiError, arvados.errors.KeepReadError) as error:
- abort("failed to download '{}': {}".format(collection, error))
- sys.exit(0)
-
-reader.normalize()
-
-# Scan the collection. Make an array of (stream, file, local
-# destination filename) tuples, and add up total size to extract.
-todo = []
-todo_bytes = 0
-try:
- for s in reader.all_streams():
- for f in s.all_files():
- if get_prefix and get_prefix[-1] == os.sep:
- if 0 != string.find(os.path.join(s.name(), f.name()),
- '.' + get_prefix):
- continue
- if args.destination == "-":
- dest_path = "-"
- else:
- dest_path = os.path.join(
- args.destination,
- os.path.join(s.name(), f.name())[len(get_prefix)+1:])
- if (not (args.n or args.f or args.skip_existing) and
- os.path.exists(dest_path)):
- abort('Local file %s already exists.' % (dest_path,))
- else:
- if os.path.join(s.name(), f.name()) != '.' + get_prefix:
- continue
- dest_path = args.destination
- todo += [(s, f, dest_path)]
- todo_bytes += f.size()
-except arvados.errors.NotFoundError as e:
- abort(e)
-
-# Read data, and (if not -n) write to local file(s) or pipe.
-
-out_bytes = 0
-for s,f,outfilename in todo:
- outfile = None
- digestor = None
- if not args.n:
- if outfilename == "-":
- outfile = sys.stdout
- else:
- if args.skip_existing and os.path.exists(outfilename):
- logger.debug('Local file %s exists. Skipping.', outfilename)
- continue
- elif not args.f and (os.path.isfile(outfilename) or
- os.path.isdir(outfilename)):
- # Good thing we looked again: apparently this file wasn't
- # here yet when we checked earlier.
- abort('Local file %s already exists.' % (outfilename,))
- if args.r:
- arvados.util.mkdir_dash_p(os.path.dirname(outfilename))
- try:
- outfile = open(outfilename, 'wb')
- except Exception as error:
- abort('Open(%s) failed: %s' % (outfilename, error))
- if args.hash:
- digestor = hashlib.new(args.hash)
- try:
- for data in f.readall():
- if outfile:
- outfile.write(data)
- if digestor:
- digestor.update(data)
- out_bytes += len(data)
- if args.progress:
- sys.stderr.write('\r%d MiB / %d MiB %.1f%%' %
- (out_bytes >> 20,
- todo_bytes >> 20,
- (100
- if todo_bytes==0
- else 100.0*out_bytes/todo_bytes)))
- elif args.batch_progress:
- sys.stderr.write('%s %d read %d total\n' %
- (sys.argv[0], os.getpid(),
- out_bytes, todo_bytes))
- if digestor:
- sys.stderr.write("%s %s/%s\n"
- % (digestor.hexdigest(), s.name(), f.name()))
- except KeyboardInterrupt:
- if outfile and (outfile.fileno() > 2) and not outfile.closed:
- os.unlink(outfile.name)
- break
-
-if args.progress:
- sys.stderr.write('\n')
+sys.exit(main(sys.argv[1:]))
projects / arvados.git / blobdiff