3036: Fix arv-put to write name/owner of collections object directly when
[arvados.git] / sdk / python / arvados / commands / put.py
index 496110db7a4bd0ea12754475d31b75e0ef841b24..71e31b24184079a00ccfc69ecccdd75b83e97350 100644 (file)
 # TODO:
 # --md5sum - display md5 of each file as read from disk
 
+import apiclient.errors
 import argparse
 import arvados
 import base64
+import datetime
 import errno
 import fcntl
 import hashlib
 import json
 import os
+import pwd
+import signal
+import socket
 import sys
 import tempfile
 
-def parse_arguments(arguments):
-    parser = argparse.ArgumentParser(
-        description='Copy data from the local filesystem to Keep.')
-
-    parser.add_argument('paths', metavar='path', type=str, nargs='*',
-                        help="""
-    Local file or directory. Default: read from standard input.
-    """)
-
-    parser.add_argument('--max-manifest-depth', type=int, metavar='N',
-                        default=-1, help="""
-    Maximum depth of directory tree to represent in the manifest
-    structure. A directory structure deeper than this will be represented
-    as a single stream in the manifest. If N=0, the manifest will contain
-    a single stream. Default: -1 (unlimited), i.e., exactly one manifest
-    stream per filesystem directory that contains files.
-    """)
-
-    group = parser.add_mutually_exclusive_group()
-
-    group.add_argument('--as-stream', action='store_true', dest='stream',
-                       help="""
-    Synonym for --stream.
-    """)
-
-    group.add_argument('--stream', action='store_true',
-                       help="""
-    Store the file content and display the resulting manifest on
-    stdout. Do not write the manifest to Keep or save a Collection object
-    in Arvados.
-    """)
-
-    group.add_argument('--as-manifest', action='store_true', dest='manifest',
-                       help="""
-    Synonym for --manifest.
-    """)
-
-    group.add_argument('--in-manifest', action='store_true', dest='manifest',
-                       help="""
-    Synonym for --manifest.
-    """)
-
-    group.add_argument('--manifest', action='store_true',
-                       help="""
-    Store the file data and resulting manifest in Keep, save a Collection
-    object in Arvados, and display the manifest locator (Collection uuid)
-    on stdout. This is the default behavior.
-    """)
-
-    group.add_argument('--as-raw', action='store_true', dest='raw',
-                       help="""
-    Synonym for --raw.
-    """)
-
-    group.add_argument('--raw', action='store_true',
-                       help="""
-    Store the file content and display the data block locators on stdout,
-    separated by commas, with a trailing newline. Do not store a
-    manifest.
-    """)
-
-    parser.add_argument('--use-filename', type=str, default=None,
-                        dest='filename', help="""
-    Synonym for --filename.
-    """)
-
-    parser.add_argument('--filename', type=str, default=None,
-                        help="""
-    Use the given filename in the manifest, instead of the name of the
-    local file. This is useful when "-" or "/dev/stdin" is given as an
-    input file. It can be used only if there is exactly one path given and
-    it is not a directory. Implies --manifest.
-    """)
-
-    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
-    stderr is a tty.
-    """)
+import arvados.commands._util as arv_cmd
+
+CAUGHT_SIGNALS = [signal.SIGINT, signal.SIGQUIT, signal.SIGTERM]
+
+upload_opts = argparse.ArgumentParser(add_help=False)
+
+upload_opts.add_argument('paths', metavar='path', type=str, nargs='*',
+                    help="""
+Local file or directory. Default: read from standard input.
+""")
+
+upload_opts.add_argument('--max-manifest-depth', type=int, metavar='N',
+                    default=-1, help="""
+Maximum depth of directory tree to represent in the manifest
+structure. A directory structure deeper than this will be represented
+as a single stream in the manifest. If N=0, the manifest will contain
+a single stream. Default: -1 (unlimited), i.e., exactly one manifest
+stream per filesystem directory that contains files.
+""")
+
+upload_opts.add_argument('--project-uuid', metavar='UUID', help="""
+Store the collection in the specified project, instead of your Home
+project.
+""")
+
+upload_opts.add_argument('--name', help="""
+Save the collection with the specified name, rather than the default
+generic name "Saved at {time} by {username}@{host}".
+""")
+
+_group = upload_opts.add_mutually_exclusive_group()
+
+_group.add_argument('--as-stream', action='store_true', dest='stream',
+                   help="""
+Synonym for --stream.
+""")
+
+_group.add_argument('--stream', action='store_true',
+                   help="""
+Store the file content and display the resulting manifest on
+stdout. Do not write the manifest to Keep or save a Collection object
+in Arvados.
+""")
+
+_group.add_argument('--as-manifest', action='store_true', dest='manifest',
+                   help="""
+Synonym for --manifest.
+""")
+
+_group.add_argument('--in-manifest', action='store_true', dest='manifest',
+                   help="""
+Synonym for --manifest.
+""")
+
+_group.add_argument('--manifest', action='store_true',
+                   help="""
+Store the file data and resulting manifest in Keep, save a Collection
+object in Arvados, and display the manifest locator (Collection uuid)
+on stdout. This is the default behavior.
+""")
+
+_group.add_argument('--as-raw', action='store_true', dest='raw',
+                   help="""
+Synonym for --raw.
+""")
+
+_group.add_argument('--raw', action='store_true',
+                   help="""
+Store the file content and display the data block locators on stdout,
+separated by commas, with a trailing newline. Do not store a
+manifest.
+""")
+
+upload_opts.add_argument('--use-filename', type=str, default=None,
+                    dest='filename', help="""
+Synonym for --filename.
+""")
+
+upload_opts.add_argument('--filename', type=str, default=None,
+                    help="""
+Use the given filename in the manifest, instead of the name of the
+local file. This is useful when "-" or "/dev/stdin" is given as an
+input file. It can be used only if there is exactly one path given and
+it is not a directory. Implies --manifest.
+""")
+
+run_opts = argparse.ArgumentParser(add_help=False)
+_group = run_opts.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
+stderr is a tty.
+""")
+
+_group.add_argument('--no-progress', action='store_true',
+                   help="""
+Do not display human-readable progress on stderr, even if stderr is a
+tty.
+""")
+
+_group.add_argument('--batch-progress', action='store_true',
+                   help="""
+Display machine-readable progress on stderr (bytes and, if known,
+total data size).
+""")
+
+_group = run_opts.add_mutually_exclusive_group()
+_group.add_argument('--resume', action='store_true', default=True,
+                   help="""
+Continue interrupted uploads from cached state (default).
+""")
+_group.add_argument('--no-resume', action='store_false', dest='resume',
+                   help="""
+Do not continue interrupted uploads from cached state.
+""")
+
+arg_parser = argparse.ArgumentParser(
+    description='Copy data from the local filesystem to Keep.',
+    parents=[upload_opts, run_opts])
 
-    group.add_argument('--no-progress', action='store_true',
-                       help="""
-    Do not display human-readable progress on stderr, even if stderr is a
-    tty.
-    """)
-
-    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('--resume', action='store_true', default=True,
-                       help="""
-    Continue interrupted uploads from cached state (default).
-    """)
-    group.add_argument('--no-resume', action='store_false', dest='resume',
-                       help="""
-    Do not continue interrupted uploads from cached state.
-    """)
-
-    args = parser.parse_args(arguments)
+def parse_arguments(arguments):
+    args = arg_parser.parse_args(arguments)
 
     if len(args.paths) == 0:
         args.paths += ['/dev/stdin']
 
     if len(args.paths) != 1 or os.path.isdir(args.paths[0]):
         if args.filename:
-            parser.error("""
+            arg_parser.error("""
     --filename argument cannot be used when storing a directory or
     multiple files.
     """)
@@ -147,24 +170,10 @@ class ResumeCacheConflict(Exception):
 
 
 class ResumeCache(object):
-    CACHE_DIR = os.path.expanduser('~/.cache/arvados/arv-put')
-
-    @classmethod
-    def setup_user_cache(cls):
-        try:
-            os.makedirs(cls.CACHE_DIR)
-        except OSError as error:
-            if error.errno != errno.EEXIST:
-                raise
-        else:
-            os.chmod(cls.CACHE_DIR, 0o700)
+    CACHE_DIR = '.cache/arvados/arv-put'
 
     def __init__(self, file_spec):
-        try:
-            self.cache_file = open(file_spec, 'a+')
-        except TypeError:
-            file_spec = self.make_path(file_spec)
-            self.cache_file = open(file_spec, 'a+')
+        self.cache_file = open(file_spec, 'a+')
         self._lock_file(self.cache_file)
         self.filename = self.cache_file.name
 
@@ -173,12 +182,14 @@ class ResumeCache(object):
         md5 = hashlib.md5()
         md5.update(arvados.config.get('ARVADOS_API_HOST', '!nohost'))
         realpaths = sorted(os.path.realpath(path) for path in args.paths)
-        md5.update(''.join(realpaths))
+        md5.update('\0'.join(realpaths))
         if any(os.path.isdir(path) for path in realpaths):
             md5.update(str(max(args.max_manifest_depth, -1)))
         elif args.filename:
             md5.update(args.filename)
-        return os.path.join(cls.CACHE_DIR, md5.hexdigest())
+        return os.path.join(
+            arv_cmd.make_home_conf_dir(cls.CACHE_DIR, 0o700, 'raise'),
+            md5.hexdigest())
 
     def _lock_file(self, fileobj):
         try:
@@ -225,12 +236,13 @@ class ResumeCache(object):
 
 class ArvPutCollectionWriter(arvados.ResumableCollectionWriter):
     STATE_PROPS = (arvados.ResumableCollectionWriter.STATE_PROPS +
-                   ['bytes_written'])
+                   ['bytes_written', '_seen_inputs'])
 
     def __init__(self, cache=None, reporter=None, bytes_expected=None):
         self.bytes_written = 0
+        self._seen_inputs = []
         self.cache = cache
-        self.report_func = reporter
+        self.reporter = reporter
         self.bytes_expected = bytes_expected
         super(ArvPutCollectionWriter, self).__init__()
 
@@ -246,7 +258,7 @@ class ArvPutCollectionWriter(arvados.ResumableCollectionWriter):
         else:
             return writer
 
-    def checkpoint_state(self):
+    def cache_state(self):
         if self.cache is None:
             return
         state = self.dump_state()
@@ -258,12 +270,38 @@ class ArvPutCollectionWriter(arvados.ResumableCollectionWriter):
                 state[attr] = list(value)
         self.cache.save(state)
 
+    def report_progress(self):
+        if self.reporter is not None:
+            self.reporter(self.bytes_written, self.bytes_expected)
+
     def flush_data(self):
-        bytes_buffered = self._data_buffer_len
+        start_buffer_len = self._data_buffer_len
+        start_block_count = self.bytes_written / self.KEEP_BLOCK_SIZE
         super(ArvPutCollectionWriter, self).flush_data()
-        self.bytes_written += (bytes_buffered - self._data_buffer_len)
-        if self.report_func is not None:
-            self.report_func(self.bytes_written, self.bytes_expected)
+        if self._data_buffer_len < start_buffer_len:  # We actually PUT data.
+            self.bytes_written += (start_buffer_len - self._data_buffer_len)
+            self.report_progress()
+            if (self.bytes_written / self.KEEP_BLOCK_SIZE) > start_block_count:
+                self.cache_state()
+
+    def _record_new_input(self, input_type, source_name, dest_name):
+        # The key needs to be a list because that's what we'll get back
+        # from JSON deserialization.
+        key = [input_type, source_name, dest_name]
+        if key in self._seen_inputs:
+            return False
+        self._seen_inputs.append(key)
+        return True
+
+    def write_file(self, source, filename=None):
+        if self._record_new_input('file', source, filename):
+            super(ArvPutCollectionWriter, self).write_file(source, filename)
+
+    def write_directory_tree(self,
+                             path, stream_name='.', max_manifest_depth=-1):
+        if self._record_new_input('directory', path, stream_name):
+            super(ArvPutCollectionWriter, self).write_directory_tree(
+                path, stream_name, max_manifest_depth)
 
 
 def expected_bytes_for(pathlist):
@@ -299,9 +337,57 @@ def progress_writer(progress_func, outfile=sys.stderr):
         outfile.write(progress_func(bytes_written, bytes_expected))
     return write_progress
 
-def main(arguments=None):
-    ResumeCache.setup_user_cache()
+def exit_signal_handler(sigcode, frame):
+    sys.exit(-sigcode)
+
+def check_project_exists(project_uuid):
+    try:
+        arvados.api('v1').groups().get(uuid=project_uuid).execute()
+    except (apiclient.errors.Error, arvados.errors.NotFoundError) as error:
+        raise ValueError("Project {} not found ({})".format(project_uuid,
+                                                            error))
+    else:
+        return True
+
+def prep_project_link(args, stderr, project_exists=check_project_exists):
+    # Given the user's command line arguments, return a dictionary with data
+    # to create the desired project link for this Collection, or None.
+    # Raises ValueError if the arguments request something impossible.
+    making_collection = not (args.raw or args.stream)
+    if not making_collection:
+        if args.name or args.project_uuid:
+            raise ValueError("Requested a Link without creating a Collection")
+        return None
+    link = {'tail_uuid': args.project_uuid,
+            'link_class': 'name',
+            'name': args.name}
+    if not link['tail_uuid']:
+        link['tail_uuid'] = arvados.api('v1').users().current().execute()['uuid']
+    elif not project_exists(link['tail_uuid']):
+        raise ValueError("Project {} not found".format(args.project_uuid))
+    if not link['name']:
+        link['name'] = "Saved at {} by {}@{}".format(
+            datetime.datetime.utcnow().strftime("%Y-%m-%d %H:%M:%S UTC"),
+            pwd.getpwuid(os.getuid()).pw_name,
+            socket.gethostname())
+        stderr.write(
+            "arv-put: No --name specified. Saving as \"%s\"\n" % link['name'])
+    link['owner_uuid'] = link['tail_uuid']
+    return link
+
+def create_project_link(locator, link):
+    link['head_uuid'] = locator
+    return arvados.api('v1').links().create(body=link).execute()
+
+def main(arguments=None, stdout=sys.stdout, stderr=sys.stderr):
+    status = 0
+
     args = parse_arguments(arguments)
+    try:
+        project_link = prep_project_link(args, stderr)
+    except ValueError as error:
+        print >>stderr, "arv-put: {}.".format(error)
+        sys.exit(2)
 
     if args.progress:
         reporter = progress_writer(human_progress)
@@ -309,44 +395,92 @@ def main(arguments=None):
         reporter = progress_writer(machine_progress)
     else:
         reporter = None
+    bytes_expected = expected_bytes_for(args.paths)
 
-    try:
-        resume_cache = ResumeCache(args)
-        if not args.resume:
-            resume_cache.restart()
-    except ResumeCacheConflict:
-        print "arv-put: Another process is already uploading this data."
-        sys.exit(1)
-
-    writer = ArvPutCollectionWriter.from_cache(
-        resume_cache, reporter, expected_bytes_for(args.paths))
-
-    # Copy file data to Keep.
-    for path in args.paths:
+    resume_cache = None
+    if args.resume:
+        try:
+            resume_cache = ResumeCache(ResumeCache.make_path(args))
+        except (IOError, OSError, ValueError):
+            pass  # Couldn't open cache directory/file.  Continue without it.
+        except ResumeCacheConflict:
+            print >>stderr, "\n".join([
+                "arv-put: Another process is already uploading this data.",
+                "         Use --no-resume if this is really what you want."])
+            sys.exit(1)
+
+    if resume_cache is None:
+        writer = ArvPutCollectionWriter(resume_cache, reporter, bytes_expected)
+    else:
+        writer = ArvPutCollectionWriter.from_cache(
+            resume_cache, reporter, bytes_expected)
+
+    # Install our signal handler for each code in CAUGHT_SIGNALS, and save
+    # the originals.
+    orig_signal_handlers = {sigcode: signal.signal(sigcode, exit_signal_handler)
+                            for sigcode in CAUGHT_SIGNALS}
+
+    if writer.bytes_written > 0:  # We're resuming a previous upload.
+        print >>stderr, "\n".join([
+                "arv-put: Resuming previous upload from last checkpoint.",
+                "         Use the --no-resume option to start over."])
+
+    writer.report_progress()
+    writer.do_queued_work()  # Do work resumed from cache.
+    for path in args.paths:  # Copy file data to Keep.
         if os.path.isdir(path):
             writer.write_directory_tree(
                 path, max_manifest_depth=args.max_manifest_depth)
         else:
             writer.start_new_stream()
             writer.write_file(path, args.filename or os.path.basename(path))
+    writer.finish_current_stream()
+
+    if args.progress:  # Print newline to split stderr from stdout for humans.
+        print >>stderr
 
     if args.stream:
-        print writer.manifest_text(),
+        output = writer.manifest_text()
     elif args.raw:
-        writer.finish_current_stream()
-        print ','.join(writer.data_locators())
+        output = ','.join(writer.data_locators())
     else:
         # Register the resulting collection in Arvados.
-        arvados.api().collections().create(
+        collection = arvados.api().collections().create(
             body={
-                'uuid': writer.finish(),
                 'manifest_text': writer.manifest_text(),
                 },
             ).execute()
 
         # Print the locator (uuid) of the new collection.
-        print writer.finish()
-    resume_cache.destroy()
+        output = collection['uuid']
+        if project_link is not None:
+            try:
+                if 'name' in collection:
+                    arvados.api().collections().update(uuid=output,
+                                                       body={"owner_uuid": project_link["tail_uuid"],
+                                                             "name": project_link["name"]}).execute()
+                else:
+                    create_project_link(output, project_link)
+            except apiclient.errors.Error as error:
+                print >>stderr, (
+                    "arv-put: Error adding Collection to project: {}.".format(
+                        error))
+                status = 1
+
+    stdout.write(output)
+    if not output.endswith('\n'):
+        stdout.write('\n')
+
+    for sigcode, orig_handler in orig_signal_handlers.items():
+        signal.signal(sigcode, orig_handler)
+
+    if status != 0:
+        sys.exit(status)
+
+    if resume_cache is not None:
+        resume_cache.destroy()
+
+    return output
 
 if __name__ == '__main__':
     main()