X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/ec5ec8c10756217482930b0ad763ff174b7843fd..c3d4f8a585202ec58df5506934b698039c200b68:/sdk/python/arvados/commands/put.py diff --git a/sdk/python/arvados/commands/put.py b/sdk/python/arvados/commands/put.py index 95964687b4..5b46ba75b7 100644 --- a/sdk/python/arvados/commands/put.py +++ b/sdk/python/arvados/commands/put.py @@ -24,6 +24,7 @@ import tempfile import threading import time from apiclient import errors as apiclient_errors +from arvados._version import __version__ import arvados.commands._util as arv_cmd @@ -32,6 +33,9 @@ api_client = None upload_opts = argparse.ArgumentParser(add_help=False) +upload_opts.add_argument('--version', action='version', + version="%s %s" % (sys.argv[0], __version__), + help='Print version and exit.') upload_opts.add_argument('paths', metavar='path', type=str, nargs='*', help=""" Local file or directory. Default: read from standard input. @@ -40,13 +44,7 @@ Local file or directory. Default: read from standard input. _group = upload_opts.add_mutually_exclusive_group() _group.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. -""") + default=-1, help=argparse.SUPPRESS) _group.add_argument('--normalize', action='store_true', help=""" @@ -54,6 +52,12 @@ Normalize the manifest by re-ordering files and streams after writing data. """) +_group.add_argument('--dry-run', action='store_true', default=False, + help=""" +Don't actually upload files, but only check if any file should be +uploaded. Exit with code=2 when files are pending for upload. +""") + _group = upload_opts.add_mutually_exclusive_group() _group.add_argument('--as-stream', action='store_true', dest='stream', @@ -97,8 +101,8 @@ separated by commas, with a trailing newline. Do not store a manifest. """) -_group.add_argument('--update-collection', type=str, default=None, - dest='update_collection', metavar="UUID", help=""" +upload_opts.add_argument('--update-collection', type=str, default=None, + dest='update_collection', metavar="UUID", help=""" Update an existing collection identified by the given Arvados collection UUID. All new local files will be uploaded. """) @@ -129,6 +133,15 @@ physical storage devices (e.g., disks) should have a copy of each data block. Default is to use the server-provided default (if any) or 2. """) +upload_opts.add_argument('--threads', type=int, metavar='N', default=None, + help=""" +Set the number of upload threads to be used. Take into account that +using lots of threads will increase the RAM requirements. Default is +to use 2 threads. +On high latency installations, using a greater number will improve +overall throughput. +""") + run_opts = argparse.ArgumentParser(add_help=False) run_opts.add_argument('--project-uuid', metavar='UUID', help=""" @@ -170,6 +183,16 @@ _group.add_argument('--no-resume', action='store_false', dest='resume', Do not continue interrupted uploads from cached state. """) +_group = run_opts.add_mutually_exclusive_group() +_group.add_argument('--cache', action='store_true', dest='use_cache', default=True, + help=""" +Save upload state in a cache file for resuming (default). +""") +_group.add_argument('--no-cache', action='store_false', dest='use_cache', + help=""" +Do not save upload state in a cache file for resuming. +""") + arg_parser = argparse.ArgumentParser( description='Copy data from the local filesystem to Keep.', parents=[upload_opts, run_opts, arv_cmd.retry_opt]) @@ -194,12 +217,17 @@ def parse_arguments(arguments): and os.isatty(sys.stderr.fileno())): args.progress = True + # Turn off --resume (default) if --no-cache is used. + if not args.use_cache: + args.resume = False + if args.paths == ['-']: if args.update_collection: arg_parser.error(""" --update-collection cannot be used when reading from stdin. """) args.resume = False + args.use_cache = False if not args.filename: args.filename = 'stdin' @@ -210,14 +238,33 @@ class CollectionUpdateError(Exception): pass -class ResumeCacheInvalid(Exception): +class ResumeCacheConflict(Exception): + pass + + +class ArvPutArgumentConflict(Exception): pass -class ResumeCacheConflict(Exception): +class ArvPutUploadIsPending(Exception): + pass + + +class ArvPutUploadNotPending(Exception): pass +class FileUploadList(list): + def __init__(self, dry_run=False): + list.__init__(self) + self.dry_run = dry_run + + def append(self, other): + if self.dry_run: + raise ArvPutUploadIsPending() + super(FileUploadList, self).append(other) + + class ResumeCache(object): CACHE_DIR = '.cache/arvados/arv-put' @@ -233,7 +280,7 @@ class ResumeCache(object): realpaths = sorted(os.path.realpath(path) for path in args.paths) md5.update('\0'.join(realpaths)) if any(os.path.isdir(path) for path in realpaths): - md5.update(str(max(args.max_manifest_depth, -1))) + md5.update("-1") elif args.filename: md5.update(args.filename) return os.path.join( @@ -307,12 +354,15 @@ class ArvPutUploadJob(object): 'files' : {} # Previous run file list: {path : {size, mtime}} } - def __init__(self, paths, resume=True, reporter=None, bytes_expected=None, - name=None, owner_uuid=None, ensure_unique_name=False, - num_retries=None, replication_desired=None, - filename=None, update_time=1.0, update_collection=None): + def __init__(self, paths, resume=True, use_cache=True, reporter=None, + bytes_expected=None, name=None, owner_uuid=None, + ensure_unique_name=False, num_retries=None, + put_threads=None, replication_desired=None, + filename=None, update_time=60.0, update_collection=None, + logger=logging.getLogger('arvados.arv_put'), dry_run=False): self.paths = paths self.resume = resume + self.use_cache = use_cache self.update = False self.reporter = reporter self.bytes_expected = bytes_expected @@ -323,101 +373,114 @@ class ArvPutUploadJob(object): self.ensure_unique_name = ensure_unique_name self.num_retries = num_retries self.replication_desired = replication_desired + self.put_threads = put_threads self.filename = filename self._state_lock = threading.Lock() self._state = None # Previous run state (file list & manifest) self._current_files = [] # Current run file list self._cache_file = None - self._collection = None self._collection_lock = threading.Lock() - self._local_collection = None # Previous run collection manifest + self._remote_collection = None # Collection being updated (if asked) + self._local_collection = None # Collection from previous run manifest self._file_paths = [] # Files to be updated in remote collection self._stop_checkpointer = threading.Event() self._checkpointer = threading.Thread(target=self._update_task) + self._checkpointer.daemon = True self._update_task_time = update_time # How many seconds wait between update runs - self.logger = logging.getLogger('arvados.arv_put') + self._files_to_upload = FileUploadList(dry_run=dry_run) + self.logger = logger + self.dry_run = dry_run - # Load an already existing collection for update - if update_collection and re.match(arvados.util.collection_uuid_pattern, - update_collection): - try: - self._collection = arvados.collection.Collection(update_collection) - except arvados.errors.ApiError as error: - raise CollectionUpdateError("Cannot read collection {} ({})".format(update_collection, error)) - else: - self.update = True - elif update_collection: - # Collection locator provided, but unknown format - raise CollectionUpdateError("Collection locator unknown: '{}'".format(update_collection)) - else: - # No collection asked for update, set up an empty one. - self._collection = arvados.collection.Collection(replication_desired=self.replication_desired) + if not self.use_cache and self.resume: + raise ArvPutArgumentConflict('resume cannot be True when use_cache is False') + + # Check for obvious dry-run responses + if self.dry_run and (not self.use_cache or not self.resume): + raise ArvPutUploadIsPending() # Load cached data if any and if needed - self._setup_state() + self._setup_state(update_collection) def start(self, save_collection): """ Start supporting thread & file uploading """ - self._checkpointer.daemon = True - self._checkpointer.start() + if not self.dry_run: + self._checkpointer.start() try: for path in self.paths: # Test for stdin first, in case some file named '-' exist if path == '-': + if self.dry_run: + raise ArvPutUploadIsPending() self._write_stdin(self.filename or 'stdin') elif os.path.isdir(path): - if path == '.' or path == './' or os.path.dirname(path) == '': - dirname = '' - else: - dirname = os.path.dirname(path) + '/' + # Use absolute paths on cache index so CWD doesn't interfere + # with the caching logic. + prefixdir = path = os.path.abspath(path) + if prefixdir != '/': + prefixdir += '/' for root, dirs, files in os.walk(path): # Make os.walk()'s dir traversing order deterministic dirs.sort() files.sort() for f in files: - self._write_file(os.path.join(root, f), - os.path.join(root[len(dirname):], f)) + self._check_file(os.path.join(root, f), + os.path.join(root[len(prefixdir):], f)) else: - self._write_file(path, self.filename or os.path.basename(path)) - finally: - # Stop the thread before doing anything else - self._stop_checkpointer.set() - self._checkpointer.join() - # Commit all & one last _update() - self.manifest_text() - if save_collection: - self.save_collection() + self._check_file(os.path.abspath(path), + self.filename or os.path.basename(path)) + # If dry-mode is on, and got up to this point, then we should notify that + # there aren't any file to upload. + if self.dry_run: + raise ArvPutUploadNotPending() + # Remove local_collection's files that don't exist locally anymore, so the + # bytes_written count is correct. + for f in self.collection_file_paths(self._local_collection, + path_prefix=""): + if f != 'stdin' and f != self.filename and not f in self._file_paths: + self._local_collection.remove(f) + # Update bytes_written from current local collection and + # report initial progress. self._update() - self._cache_file.close() - # Correct the final written bytes count - self.bytes_written -= self.bytes_skipped + # Actual file upload + self._upload_files() + finally: + if not self.dry_run: + # Stop the thread before doing anything else + self._stop_checkpointer.set() + self._checkpointer.join() + # Commit all pending blocks & one last _update() + self._local_collection.manifest_text() + self._update(final=True) + if save_collection: + self.save_collection() + if self.use_cache: + self._cache_file.close() def save_collection(self): - with self._collection_lock: - if self.update: - # Check if files should be updated on the remote collection. - for fp in self._file_paths: - remote_file = self._collection.find(fp) - if not remote_file: - # File don't exist on remote collection, copy it. - self._collection.copy(fp, fp, self._local_collection) - elif remote_file != self._local_collection.find(fp): - # A different file exist on remote collection, overwrite it. - self._collection.copy(fp, fp, self._local_collection, overwrite=True) - else: - # The file already exist on remote collection, skip it. - pass - self._collection.save(num_retries=self.num_retries) - else: - self._my_collection().save_new( - name=self.name, owner_uuid=self.owner_uuid, - ensure_unique_name=self.ensure_unique_name, - num_retries=self.num_retries) + if self.update: + # Check if files should be updated on the remote collection. + for fp in self._file_paths: + remote_file = self._remote_collection.find(fp) + if not remote_file: + # File don't exist on remote collection, copy it. + self._remote_collection.copy(fp, fp, self._local_collection) + elif remote_file != self._local_collection.find(fp): + # A different file exist on remote collection, overwrite it. + self._remote_collection.copy(fp, fp, self._local_collection, overwrite=True) + else: + # The file already exist on remote collection, skip it. + pass + self._remote_collection.save(num_retries=self.num_retries) + else: + self._local_collection.save_new( + name=self.name, owner_uuid=self.owner_uuid, + ensure_unique_name=self.ensure_unique_name, + num_retries=self.num_retries) def destroy_cache(self): - if self.resume: + if self.use_cache: try: os.unlink(self._cache_filename) except OSError as error: @@ -446,16 +509,24 @@ class ArvPutUploadJob(object): while not self._stop_checkpointer.wait(self._update_task_time): self._update() - def _update(self): + def _update(self, final=False): """ Update cached manifest text and report progress. """ with self._collection_lock: self.bytes_written = self._collection_size(self._local_collection) - # Update cache, if resume enabled - with self._state_lock: - # Get the manifest text without comitting pending blocks - self._state['manifest'] = self._local_collection._get_manifest_text(".", strip=False, normalize=False, only_committed=True) + if self.use_cache: + if final: + manifest = self._local_collection.manifest_text() + else: + # Get the manifest text without comitting pending blocks + manifest = self._local_collection.manifest_text(strip=False, + normalize=False, + only_committed=True) + # Update cache + with self._state_lock: + self._state['manifest'] = manifest + if self.use_cache: self._save_state() # Call the reporter, if any self.report_progress() @@ -465,16 +536,15 @@ class ArvPutUploadJob(object): self.reporter(self.bytes_written, self.bytes_expected) def _write_stdin(self, filename): - with self._collection_lock: - output = self._local_collection.open(filename, 'w') + output = self._local_collection.open(filename, 'w') self._write(sys.stdin, output) output.close() - def _write_file(self, source, filename): + def _check_file(self, source, filename): + """Check if this file needs to be uploaded""" resume_offset = 0 should_upload = False new_file_in_cache = False - # Record file path for updating the remote collection before exiting self._file_paths.append(filename) @@ -490,8 +560,7 @@ class ArvPutUploadJob(object): cached_file_data = self._state['files'][source] # Check if file was already uploaded (at least partially) - with self._collection_lock: - file_in_local_collection = self._local_collection.find(filename) + file_in_local_collection = self._local_collection.find(filename) # If not resuming, upload the full file. if not self.resume: @@ -504,85 +573,123 @@ class ArvPutUploadJob(object): if not file_in_local_collection: # File not uploaded yet, upload it completely should_upload = True + elif file_in_local_collection.permission_expired(): + # Permission token expired, re-upload file. This will change whenever + # we have a API for refreshing tokens. + should_upload = True + self._local_collection.remove(filename) elif cached_file_data['size'] == file_in_local_collection.size(): # File already there, skip it. self.bytes_skipped += cached_file_data['size'] elif cached_file_data['size'] > file_in_local_collection.size(): # File partially uploaded, resume! resume_offset = file_in_local_collection.size() + self.bytes_skipped += resume_offset should_upload = True else: # Inconsistent cache, re-upload the file should_upload = True + self._local_collection.remove(filename) self.logger.warning("Uploaded version of file '{}' is bigger than local version, will re-upload it from scratch.".format(source)) # Local file differs from cached data, re-upload it. else: + if file_in_local_collection: + self._local_collection.remove(filename) should_upload = True if should_upload: + self._files_to_upload.append((source, resume_offset, filename)) + + def _upload_files(self): + for source, resume_offset, filename in self._files_to_upload: with open(source, 'r') as source_fd: with self._state_lock: self._state['files'][source]['mtime'] = os.path.getmtime(source) self._state['files'][source]['size'] = os.path.getsize(source) if resume_offset > 0: # Start upload where we left off - with self._collection_lock: - output = self._local_collection.open(filename, 'a') + output = self._local_collection.open(filename, 'a') source_fd.seek(resume_offset) - self.bytes_skipped += resume_offset else: # Start from scratch - with self._collection_lock: - output = self._local_collection.open(filename, 'w') + output = self._local_collection.open(filename, 'w') self._write(source_fd, output) output.close(flush=False) def _write(self, source_fd, output): - first_read = True while True: data = source_fd.read(arvados.config.KEEP_BLOCK_SIZE) - # Allow an empty file to be written - if not data and not first_read: + if not data: break - if first_read: - first_read = False output.write(data) def _my_collection(self): - return self._local_collection + return self._remote_collection if self.update else self._local_collection - def _setup_state(self): + def _setup_state(self, update_collection): """ Create a new cache file or load a previously existing one. """ - md5 = hashlib.md5() - md5.update(arvados.config.get('ARVADOS_API_HOST', '!nohost')) - realpaths = sorted(os.path.realpath(path) for path in self.paths) - md5.update('\0'.join(realpaths)) - if self.filename: - md5.update(self.filename) - cache_filename = md5.hexdigest() - self._cache_file = open(os.path.join( - arv_cmd.make_home_conf_dir(self.CACHE_DIR, 0o700, 'raise'), - cache_filename), 'a+') - self._cache_filename = self._cache_file.name - self._lock_file(self._cache_file) - self._cache_file.seek(0) - with self._state_lock: + # Load an already existing collection for update + if update_collection and re.match(arvados.util.collection_uuid_pattern, + update_collection): try: - self._state = json.load(self._cache_file) - if not set(['manifest', 'files']).issubset(set(self._state.keys())): - # Cache at least partially incomplete, set up new cache + self._remote_collection = arvados.collection.Collection(update_collection) + except arvados.errors.ApiError as error: + raise CollectionUpdateError("Cannot read collection {} ({})".format(update_collection, error)) + else: + self.update = True + elif update_collection: + # Collection locator provided, but unknown format + raise CollectionUpdateError("Collection locator unknown: '{}'".format(update_collection)) + + if self.use_cache: + # Set up cache file name from input paths. + md5 = hashlib.md5() + md5.update(arvados.config.get('ARVADOS_API_HOST', '!nohost')) + realpaths = sorted(os.path.realpath(path) for path in self.paths) + md5.update('\0'.join(realpaths)) + if self.filename: + md5.update(self.filename) + cache_filename = md5.hexdigest() + cache_filepath = os.path.join( + arv_cmd.make_home_conf_dir(self.CACHE_DIR, 0o700, 'raise'), + cache_filename) + if self.resume: + self._cache_file = open(cache_filepath, 'a+') + else: + # --no-resume means start with a empty cache file. + self._cache_file = open(cache_filepath, 'w+') + self._cache_filename = self._cache_file.name + self._lock_file(self._cache_file) + self._cache_file.seek(0) + + with self._state_lock: + if self.use_cache: + try: + self._state = json.load(self._cache_file) + if not set(['manifest', 'files']).issubset(set(self._state.keys())): + # Cache at least partially incomplete, set up new cache + self._state = copy.deepcopy(self.EMPTY_STATE) + except ValueError: + # Cache file empty, set up new cache self._state = copy.deepcopy(self.EMPTY_STATE) - except ValueError: - # Cache file empty, set up new cache + else: + # No cache file, set empty state self._state = copy.deepcopy(self.EMPTY_STATE) - # Load the previous manifest so we can check if files were modified remotely. - self._local_collection = arvados.collection.Collection(self._state['manifest'], replication_desired=self.replication_desired) - # Load how many bytes were uploaded on previous run - with self._collection_lock: - self.bytes_written = self._collection_size(self._my_collection()) + self._local_collection = arvados.collection.Collection(self._state['manifest'], replication_desired=self.replication_desired, put_threads=self.put_threads) + + def collection_file_paths(self, col, path_prefix='.'): + """Return a list of file paths by recursively go through the entire collection `col`""" + file_paths = [] + for name, item in col.items(): + if isinstance(item, arvados.arvfile.ArvadosFile): + file_paths.append(os.path.join(path_prefix, name)) + elif isinstance(item, arvados.collection.Subcollection): + new_prefix = os.path.join(path_prefix, name) + file_paths += self.collection_file_paths(item, path_prefix=new_prefix) + return file_paths def _lock_file(self, fileobj): try: @@ -596,7 +703,7 @@ class ArvPutUploadJob(object): """ try: with self._state_lock: - state = self._state + state = copy.deepcopy(self._state) new_cache_fd, new_cache_name = tempfile.mkstemp( dir=os.path.dirname(self._cache_filename)) self._lock_file(new_cache_fd) @@ -616,24 +723,16 @@ class ArvPutUploadJob(object): self._cache_file = new_cache def collection_name(self): - with self._collection_lock: - name = self._my_collection().api_response()['name'] if self._my_collection().api_response() else None - return name + return self._my_collection().api_response()['name'] if self._my_collection().api_response() else None def manifest_locator(self): - with self._collection_lock: - locator = self._my_collection().manifest_locator() - return locator + return self._my_collection().manifest_locator() def portable_data_hash(self): - with self._collection_lock: - datahash = self._my_collection().portable_data_hash() - return datahash + return self._my_collection().portable_data_hash() def manifest_text(self, stream_name=".", strip=False, normalize=False): - with self._collection_lock: - manifest = self._my_collection().manifest_text(stream_name, strip, normalize) - return manifest + return self._my_collection().manifest_text(stream_name, strip, normalize) def _datablocks_on_item(self, item): """ @@ -716,6 +815,7 @@ def desired_project_uuid(api_client, project_uuid, num_retries): def main(arguments=None, stdout=sys.stdout, stderr=sys.stderr): global api_client + logger = logging.getLogger('arvados.arv_put') args = parse_arguments(arguments) status = 0 if api_client is None: @@ -724,7 +824,10 @@ def main(arguments=None, stdout=sys.stdout, stderr=sys.stderr): # Determine the name to use if args.name: if args.stream or args.raw: - print >>stderr, "Cannot use --name with --stream or --raw" + logger.error("Cannot use --name with --stream or --raw") + sys.exit(1) + elif args.update_collection: + logger.error("Cannot use --name with --update-collection") sys.exit(1) collection_name = args.name else: @@ -734,7 +837,7 @@ def main(arguments=None, stdout=sys.stdout, stderr=sys.stderr): socket.gethostname()) if args.project_uuid and (args.stream or args.raw): - print >>stderr, "Cannot use --project-uuid with --stream or --raw" + logger.error("Cannot use --project-uuid with --stream or --raw") sys.exit(1) # Determine the parent project @@ -742,7 +845,7 @@ def main(arguments=None, stdout=sys.stdout, stderr=sys.stderr): project_uuid = desired_project_uuid(api_client, args.project_uuid, args.retries) except (apiclient_errors.Error, ValueError) as error: - print >>stderr, error + logger.error(error) sys.exit(1) if args.progress: @@ -757,52 +860,63 @@ def main(arguments=None, stdout=sys.stdout, stderr=sys.stderr): try: writer = ArvPutUploadJob(paths = args.paths, resume = args.resume, + use_cache = args.use_cache, filename = args.filename, reporter = reporter, bytes_expected = bytes_expected, num_retries = args.retries, replication_desired = args.replication, + put_threads = args.threads, name = collection_name, owner_uuid = project_uuid, ensure_unique_name = True, - update_collection = args.update_collection) + update_collection = args.update_collection, + logger=logger, + dry_run=args.dry_run) except ResumeCacheConflict: - print >>stderr, "\n".join([ + logger.error("\n".join([ "arv-put: Another process is already uploading this data.", - " Use --no-resume if this is really what you want."]) - sys.exit(1) - except ResumeCacheInvalid as error: - print >>stderr, "\n".join([ - "arv-put: %s" % str(error), - " Use --no-resume or delete/move the cache file to upload to a new collection.", - " Use --update-collection otherwise."]) + " Use --no-cache if this is really what you want."])) sys.exit(1) except CollectionUpdateError as error: - print >>stderr, "\n".join([ - "arv-put: %s" % str(error)]) + logger.error("\n".join([ + "arv-put: %s" % str(error)])) sys.exit(1) + except ArvPutUploadIsPending: + # Dry run check successful, return proper exit code. + sys.exit(2) + except ArvPutUploadNotPending: + # No files pending for upload + sys.exit(0) # 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 not args.update_collection and args.resume and writer.bytes_written > 0: - print >>stderr, "\n".join([ - "arv-put: Resuming previous upload from last checkpoint.", - " Use the --no-resume option to start over."]) + if not args.dry_run and not args.update_collection and args.resume and writer.bytes_written > 0: + logger.warning("\n".join([ + "arv-put: Resuming previous upload from last checkpoint.", + " Use the --no-resume option to start over."])) - writer.report_progress() + if not args.dry_run: + writer.report_progress() output = None try: writer.start(save_collection=not(args.stream or args.raw)) except arvados.errors.ApiError as error: - print >>stderr, "\n".join([ - "arv-put: %s" % str(error)]) + logger.error("\n".join([ + "arv-put: %s" % str(error)])) sys.exit(1) + except ArvPutUploadIsPending: + # Dry run check successful, return proper exit code. + sys.exit(2) + except ArvPutUploadNotPending: + # No files pending for upload + sys.exit(0) if args.progress: # Print newline to split stderr from stdout for humans. - print >>stderr + logger.info("\n") if args.stream: if args.normalize: @@ -814,15 +928,15 @@ def main(arguments=None, stdout=sys.stdout, stderr=sys.stderr): else: try: if args.update_collection: - print >>stderr, "Collection updated: '{}'".format(writer.collection_name()) + logger.info("Collection updated: '{}'".format(writer.collection_name())) else: - print >>stderr, "Collection saved as '{}'".format(writer.collection_name()) + logger.info("Collection saved as '{}'".format(writer.collection_name())) if args.portable_data_hash: output = writer.portable_data_hash() else: output = writer.manifest_locator() except apiclient_errors.Error as error: - print >>stderr, ( + logger.error( "arv-put: Error creating Collection on project: {}.".format( error)) status = 1