3 # arv-copy [--recursive] [--no-recursive] object-uuid src dst
5 # Copies an object from Arvados instance src to instance dst.
7 # By default, arv-copy recursively copies any dependent objects
8 # necessary to make the object functional in the new instance
9 # (e.g. for a pipeline instance, arv-copy copies the pipeline
10 # template, input collection, docker images, git repositories). If
11 # --no-recursive is given, arv-copy copies only the single record
12 # identified by object-uuid.
14 # The user must have files $HOME/.config/arvados/{src}.conf and
15 # $HOME/.config/arvados/{dst}.conf with valid login credentials for
16 # instances src and dst. If either of these files is not found,
17 # arv-copy will issue an error.
32 import arvados.commands._util as arv_cmd
33 import arvados.commands.keepdocker
35 logger = logging.getLogger('arvados.arv-copy')
37 # local_repo_dir records which git repositories from the Arvados source
38 # instance have been checked out locally during this run, and to which
40 # e.g. if repository 'twp' from src_arv has been cloned into
41 # /tmp/gitfHkV9lu44A then local_repo_dir['twp'] = '/tmp/gitfHkV9lu44A'
45 # List of collections that have been copied in this session, and their
46 # destination collection UUIDs.
47 collections_copied = {}
50 copy_opts = argparse.ArgumentParser(add_help=False)
52 copy_opts.add_argument(
53 '-v', '--verbose', dest='verbose', action='store_true',
54 help='Verbose output.')
55 copy_opts.add_argument(
56 '--progress', dest='progress', action='store_true',
57 help='Report progress on copying collections. (default)')
58 copy_opts.add_argument(
59 '--no-progress', dest='progress', action='store_false',
60 help='Do not report progress on copying collections.')
61 copy_opts.add_argument(
62 '-f', '--force', dest='force', action='store_true',
63 help='Perform copy even if the object appears to exist at the remote destination.')
64 copy_opts.add_argument(
65 '--src', dest='source_arvados', required=True,
66 help='The name of the source Arvados instance (required). May be either a pathname to a config file, or the basename of a file in $HOME/.config/arvados/instance_name.conf.')
67 copy_opts.add_argument(
68 '--dst', dest='destination_arvados', required=True,
69 help='The name of the destination Arvados instance (required). May be either a pathname to a config file, or the basename of a file in $HOME/.config/arvados/instance_name.conf.')
70 copy_opts.add_argument(
71 '--recursive', dest='recursive', action='store_true',
72 help='Recursively copy any dependencies for this object. (default)')
73 copy_opts.add_argument(
74 '--no-recursive', dest='recursive', action='store_false',
75 help='Do not copy any dependencies. NOTE: if this option is given, the copied object will need to be updated manually in order to be functional.')
76 copy_opts.add_argument(
77 '--dst-git-repo', dest='dst_git_repo',
78 help='The name of the destination git repository. Required when copying a pipeline recursively.')
79 copy_opts.add_argument(
80 '--project-uuid', dest='project_uuid',
81 help='The UUID of the project at the destination to which the pipeline should be copied.')
82 copy_opts.add_argument(
84 help='The UUID of the object to be copied.')
85 copy_opts.set_defaults(progress=True)
86 copy_opts.set_defaults(recursive=True)
88 parser = argparse.ArgumentParser(
89 description='Copy a pipeline instance, template or collection from one Arvados instance to another.',
90 parents=[copy_opts, arv_cmd.retry_opt])
91 args = parser.parse_args()
94 logger.setLevel(logging.DEBUG)
96 logger.setLevel(logging.INFO)
98 # Create API clients for the source and destination instances
99 src_arv = api_for_instance(args.source_arvados)
100 dst_arv = api_for_instance(args.destination_arvados)
102 # Identify the kind of object we have been given, and begin copying.
103 t = uuid_type(src_arv, args.object_uuid)
104 if t == 'Collection':
105 result = copy_collection(args.object_uuid,
108 elif t == 'PipelineInstance':
109 result = copy_pipeline_instance(args.object_uuid,
112 elif t == 'PipelineTemplate':
113 result = copy_pipeline_template(args.object_uuid,
114 src_arv, dst_arv, args)
116 abort("cannot copy object {} of type {}".format(args.object_uuid, t))
118 # Clean up any outstanding temp git repositories.
119 for d in local_repo_dir.values():
120 shutil.rmtree(d, ignore_errors=True)
122 # If no exception was thrown and the response does not have an
123 # error_token field, presume success
124 if 'error_token' in result or 'uuid' not in result:
125 logger.error("API server returned an error result: {}".format(result))
129 logger.info("Success: created copy with uuid {}".format(result['uuid']))
132 # api_for_instance(instance_name)
134 # Creates an API client for the Arvados instance identified by
137 # If instance_name contains a slash, it is presumed to be a path
138 # (either local or absolute) to a file with Arvados configuration
141 # Otherwise, it is presumed to be the name of a file in
142 # $HOME/.config/arvados/instance_name.conf
144 def api_for_instance(instance_name):
145 if '/' in instance_name:
146 config_file = instance_name
148 config_file = os.path.join(os.environ['HOME'], '.config', 'arvados', "{}.conf".format(instance_name))
151 cfg = arvados.config.load(config_file)
152 except (IOError, OSError) as e:
153 abort(("Could not open config file {}: {}\n" +
154 "You must make sure that your configuration tokens\n" +
155 "for Arvados instance {} are in {} and that this\n" +
156 "file is readable.").format(
157 config_file, e, instance_name, config_file))
159 if 'ARVADOS_API_HOST' in cfg and 'ARVADOS_API_TOKEN' in cfg:
161 cfg.get('ARVADOS_API_HOST_INSECURE', '').lower() in set(
162 ['1', 't', 'true', 'y', 'yes']))
163 client = arvados.api('v1',
164 host=cfg['ARVADOS_API_HOST'],
165 token=cfg['ARVADOS_API_TOKEN'],
166 insecure=api_is_insecure)
168 abort('need ARVADOS_API_HOST and ARVADOS_API_TOKEN for {}'.format(instance_name))
171 # copy_pipeline_instance(pi_uuid, src, dst, args)
173 # Copies a pipeline instance identified by pi_uuid from src to dst.
175 # If the args.recursive option is set:
176 # 1. Copies all input collections
177 # * For each component in the pipeline, include all collections
178 # listed as job dependencies for that component)
179 # 2. Copy docker images
180 # 3. Copy git repositories
181 # 4. Copy the pipeline template
183 # The only changes made to the copied pipeline instance are:
184 # 1. The original pipeline instance UUID is preserved in
185 # the 'properties' hash as 'copied_from_pipeline_instance_uuid'.
186 # 2. The pipeline_template_uuid is changed to the new template uuid.
187 # 3. The owner_uuid of the instance is changed to the user who
190 def copy_pipeline_instance(pi_uuid, src, dst, args):
191 # Fetch the pipeline instance record.
192 pi = src.pipeline_instances().get(uuid=pi_uuid).execute()
195 if not args.dst_git_repo:
196 abort('--dst-git-repo is required when copying a pipeline recursively.')
197 # Copy the pipeline template and save the copied template.
198 if pi.get('pipeline_template_uuid', None):
199 pt = copy_pipeline_template(pi['pipeline_template_uuid'],
202 # Copy input collections, docker images and git repos.
203 pi = copy_collections(pi, src, dst, args)
204 copy_git_repos(pi, src, dst, args.dst_git_repo)
205 copy_docker_images(pi, src, dst, args)
207 # Update the fields of the pipeline instance with the copied
209 if pi.get('pipeline_template_uuid', None):
210 pi['pipeline_template_uuid'] = pt['uuid']
214 logger.info("Copying only pipeline instance %s.", pi_uuid)
215 logger.info("You are responsible for making sure all pipeline dependencies have been updated.")
217 # Update the pipeline instance properties, and create the new
219 pi['properties']['copied_from_pipeline_instance_uuid'] = pi_uuid
220 pi['description'] = "Pipeline copied from {}\n\n{}".format(
222 pi['description'] if pi.get('description', None) else '')
223 if args.project_uuid:
224 pi['owner_uuid'] = args.project_uuid
229 new_pi = dst.pipeline_instances().create(body=pi, ensure_unique_name=True).execute()
232 # copy_pipeline_template(pt_uuid, src, dst, args)
234 # Copies a pipeline template identified by pt_uuid from src to dst.
236 # If args.recursive is True, also copy any collections, docker
237 # images and git repositories that this template references.
239 # The owner_uuid of the new template is changed to that of the user
240 # who copied the template.
242 # Returns the copied pipeline template object.
244 def copy_pipeline_template(pt_uuid, src, dst, args):
245 # fetch the pipeline template from the source instance
246 pt = src.pipeline_templates().get(uuid=pt_uuid).execute()
249 if not args.dst_git_repo:
250 abort('--dst-git-repo is required when copying a pipeline recursively.')
251 # Copy input collections, docker images and git repos.
252 pt = copy_collections(pt, src, dst, args)
253 copy_git_repos(pt, src, dst, args.dst_git_repo)
254 copy_docker_images(pt, src, dst, args)
256 pt['description'] = "Pipeline template copied from {}\n\n{}".format(
258 pt['description'] if pt.get('description', None) else '')
259 pt['name'] = "{} copied from {}".format(pt.get('name', ''), pt_uuid)
263 return dst.pipeline_templates().create(body=pt, ensure_unique_name=True).execute()
265 # copy_collections(obj, src, dst, args)
267 # Recursively copies all collections referenced by 'obj' from src
268 # to dst. obj may be a dict or a list, in which case we run
269 # copy_collections on every value it contains. If it is a string,
270 # search it for any substring that matches a collection hash or uuid
271 # (this will find hidden references to collections like
272 # "input0": "$(file 3229739b505d2b878b62aed09895a55a+142/HWI-ST1027_129_D0THKACXX.1_1.fastq)")
274 # Returns a copy of obj with any old collection uuids replaced by
277 def copy_collections(obj, src, dst, args):
279 def copy_collection_fn(collection_match):
280 """Helper function for regex substitution: copies a single collection,
281 identified by the collection_match MatchObject, to the
282 destination. Returns the destination collection uuid (or the
283 portable data hash if that's what src_id is).
286 src_id = collection_match.group(0)
287 if src_id not in collections_copied:
288 dst_col = copy_collection(src_id, src, dst, args)
289 if src_id in [dst_col['uuid'], dst_col['portable_data_hash']]:
290 collections_copied[src_id] = src_id
292 collections_copied[src_id] = dst_col['uuid']
293 return collections_copied[src_id]
295 if isinstance(obj, basestring):
296 # Copy any collections identified in this string to dst, replacing
297 # them with the dst uuids as necessary.
298 obj = arvados.util.portable_data_hash_pattern.sub(copy_collection_fn, obj)
299 obj = arvados.util.collection_uuid_pattern.sub(copy_collection_fn, obj)
301 elif type(obj) == dict:
302 return {v: copy_collections(obj[v], src, dst, args) for v in obj}
303 elif type(obj) == list:
304 return [copy_collections(v, src, dst, args) for v in obj]
307 # copy_git_repos(p, src, dst, dst_repo)
309 # Copies all git repositories referenced by pipeline instance or
310 # template 'p' from src to dst.
312 # For each component c in the pipeline:
313 # * Copy git repositories named in c['repository'] and c['job']['repository'] if present
314 # * Rename script versions:
315 # * c['script_version']
316 # * c['job']['script_version']
317 # * c['job']['supplied_script_version']
318 # to the commit hashes they resolve to, since any symbolic
319 # names (tags, branches) are not preserved in the destination repo.
321 # The pipeline object is updated in place with the new repository
322 # names. The return value is undefined.
324 def copy_git_repos(p, src, dst, dst_repo):
326 for c in p['components']:
327 component = p['components'][c]
328 if 'repository' in component:
329 repo = component['repository']
330 script_version = component.get('script_version', None)
331 if repo not in copied:
332 copy_git_repo(repo, src, dst, dst_repo, script_version)
334 component['repository'] = dst_repo
336 repo_dir = local_repo_dir[repo]
337 component['script_version'] = git_rev_parse(script_version, repo_dir)
338 if 'job' in component:
340 if 'repository' in j:
341 repo = j['repository']
342 script_version = j.get('script_version', None)
343 if repo not in copied:
344 copy_git_repo(repo, src, dst, dst_repo, script_version)
346 j['repository'] = dst_repo
347 repo_dir = local_repo_dir[repo]
349 j['script_version'] = git_rev_parse(script_version, repo_dir)
350 if 'supplied_script_version' in j:
351 j['supplied_script_version'] = git_rev_parse(j['supplied_script_version'], repo_dir)
353 def total_collection_size(manifest_text):
354 """Return the total number of bytes in this collection (excluding
355 duplicate blocks)."""
359 for line in manifest_text.splitlines():
361 for word in words[1:]:
363 loc = arvados.KeepLocator(word)
365 continue # this word isn't a locator, skip it
366 if loc.md5sum not in locators_seen:
367 locators_seen[loc.md5sum] = True
368 total_bytes += loc.size
372 # copy_collection(obj_uuid, src, dst, args)
374 # Copies the collection identified by obj_uuid from src to dst.
375 # Returns the collection object created at dst.
377 # If args.progress is True, produce a human-friendly progress
380 # If a collection with the desired portable_data_hash already
381 # exists at dst, and args.force is False, copy_collection returns
382 # the existing collection without copying any blocks. Otherwise
383 # (if no collection exists or if args.force is True)
384 # copy_collection copies all of the collection data blocks from src
387 # For this application, it is critical to preserve the
388 # collection's manifest hash, which is not guaranteed with the
389 # arvados.CollectionReader and arvados.CollectionWriter classes.
390 # Copying each block in the collection manually, followed by
391 # the manifest block, ensures that the collection's manifest
392 # hash will not change.
394 def copy_collection(obj_uuid, src, dst, args):
395 c = src.collections().get(uuid=obj_uuid).execute()
397 # If a collection with this hash already exists at the
398 # destination, and 'force' is not true, just return that
401 if 'portable_data_hash' in c:
402 colhash = c['portable_data_hash']
405 dstcol = dst.collections().list(
406 filters=[['portable_data_hash', '=', colhash]]
408 if dstcol['items_available'] > 0:
409 logger.debug("Skipping collection %s (already at dst)", obj_uuid)
410 return dstcol['items'][0]
412 # Fetch the collection's manifest.
413 manifest = c['manifest_text']
414 logger.debug("Copying collection %s with manifest: <%s>", obj_uuid, manifest)
416 # Copy each block from src_keep to dst_keep.
417 # Use the newly signed locators returned from dst_keep to build
418 # a new manifest as we go.
419 src_keep = arvados.keep.KeepClient(api_client=src, num_retries=args.retries)
420 dst_keep = arvados.keep.KeepClient(api_client=dst, num_retries=args.retries)
424 bytes_expected = total_collection_size(manifest)
426 progress_writer = ProgressWriter(human_progress)
428 progress_writer = None
430 for line in manifest.splitlines(True):
432 dst_manifest_line = words[0]
433 for word in words[1:]:
435 loc = arvados.KeepLocator(word)
436 blockhash = loc.md5sum
437 # copy this block if we haven't seen it before
438 # (otherwise, just reuse the existing dst_locator)
439 if blockhash not in dst_locators:
440 logger.debug("Copying block %s (%s bytes)", blockhash, loc.size)
442 progress_writer.report(obj_uuid, bytes_written, bytes_expected)
443 data = src_keep.get(word)
444 dst_locator = dst_keep.put(data)
445 dst_locators[blockhash] = dst_locator
446 bytes_written += loc.size
447 dst_manifest_line += ' ' + dst_locators[blockhash]
449 # If 'word' can't be parsed as a locator,
450 # presume it's a filename.
451 dst_manifest_line += ' ' + word
452 dst_manifest += dst_manifest_line
453 if line.endswith("\n"):
457 progress_writer.report(obj_uuid, bytes_written, bytes_expected)
458 progress_writer.finish()
460 # Copy the manifest and save the collection.
461 logger.debug('saving %s with manifest: <%s>', obj_uuid, dst_manifest)
462 dst_keep.put(dst_manifest)
466 if 'owner_uuid' in c:
468 c['manifest_text'] = dst_manifest
469 return dst.collections().create(body=c, ensure_unique_name=True).execute()
471 # copy_git_repo(src_git_repo, src, dst, dst_git_repo, script_version)
473 # Copies commits from git repository 'src_git_repo' on Arvados
474 # instance 'src' to 'dst_git_repo' on 'dst'. Both src_git_repo
475 # and dst_git_repo are repository names, not UUIDs (i.e. "arvados"
478 # All commits will be copied to a destination branch named for the
479 # source repository URL.
481 # Because users cannot create their own repositories, the
482 # destination repository must already exist.
484 # The user running this command must be authenticated
485 # to both repositories.
487 def copy_git_repo(src_git_repo, src, dst, dst_git_repo, script_version):
488 # Identify the fetch and push URLs for the git repositories.
489 r = src.repositories().list(
490 filters=[['name', '=', src_git_repo]]).execute()
491 if r['items_available'] != 1:
492 raise Exception('cannot identify source repo {}; {} repos found'
493 .format(src_git_repo, r['items_available']))
494 src_git_url = r['items'][0]['fetch_url']
495 logger.debug('src_git_url: {}'.format(src_git_url))
497 r = dst.repositories().list(
498 filters=[['name', '=', dst_git_repo]]).execute()
499 if r['items_available'] != 1:
500 raise Exception('cannot identify destination repo {}; {} repos found'
501 .format(dst_git_repo, r['items_available']))
502 dst_git_push_url = r['items'][0]['push_url']
503 logger.debug('dst_git_push_url: {}'.format(dst_git_push_url))
505 # script_version is the "script_version" parameter from the source
506 # component or job. It is used here to tie the destination branch
507 # to the commit that was used on the source. If no script_version
508 # was supplied in the component or job, it is a mistake in the pipeline,
509 # but for the purposes of copying the repository, default to "master".
511 if not script_version:
512 script_version = "master"
514 dst_branch = re.sub(r'\W+', '_', "{}_{}".format(src_git_url, script_version))
516 # Copy git commits from src repo to dst repo (but only if
517 # we have not already copied this repo in this session).
519 if src_git_repo in local_repo_dir:
520 logger.debug('already copied src repo %s, skipping', src_git_repo)
522 tmprepo = tempfile.mkdtemp()
523 local_repo_dir[src_git_repo] = tmprepo
524 arvados.util.run_command(
525 ["git", "clone", "--bare", src_git_url, tmprepo],
526 cwd=os.path.dirname(tmprepo))
527 arvados.util.run_command(
528 ["git", "branch", dst_branch, script_version],
530 arvados.util.run_command(["git", "remote", "add", "dst", dst_git_push_url], cwd=tmprepo)
531 arvados.util.run_command(["git", "push", "dst", dst_branch], cwd=tmprepo)
534 def copy_docker_images(pipeline, src, dst, args):
535 """Copy any docker images named in the pipeline components'
536 runtime_constraints field from src to dst."""
538 logger.debug('copy_docker_images: {}'.format(pipeline['uuid']))
539 for c_name, c_info in pipeline['components'].iteritems():
540 if ('runtime_constraints' in c_info and
541 'docker_image' in c_info['runtime_constraints']):
543 c_info['runtime_constraints']['docker_image'],
544 c_info['runtime_constraints'].get('docker_image_tag', 'latest'),
548 def copy_docker_image(docker_image, docker_image_tag, src, dst, args):
549 """Copy the docker image identified by docker_image and
550 docker_image_tag from src to dst. Create appropriate
551 docker_image_repo+tag and docker_image_hash links at dst.
555 logger.debug('copying docker image {}:{}'.format(docker_image, docker_image_tag))
557 # Find the link identifying this docker image.
558 docker_image_list = arvados.commands.keepdocker.list_images_in_arv(
559 src, args.retries, docker_image, docker_image_tag)
560 image_uuid, image_info = docker_image_list[0]
561 logger.debug('copying collection {} {}'.format(image_uuid, image_info))
563 # Copy the collection it refers to.
564 dst_image_col = copy_collection(image_uuid, src, dst, args)
566 # Create docker_image_repo+tag and docker_image_hash links
567 # at the destination.
568 lk = dst.links().create(
570 'head_uuid': dst_image_col['uuid'],
571 'link_class': 'docker_image_repo+tag',
572 'name': "{}:{}".format(docker_image, docker_image_tag),
574 ).execute(num_retries=args.retries)
575 logger.debug('created dst link {}'.format(lk))
577 lk = dst.links().create(
579 'head_uuid': dst_image_col['uuid'],
580 'link_class': 'docker_image_hash',
581 'name': dst_image_col['portable_data_hash'],
583 ).execute(num_retries=args.retries)
584 logger.debug('created dst link {}'.format(lk))
587 # git_rev_parse(rev, repo)
589 # Returns the 40-character commit hash corresponding to 'rev' in
590 # git repository 'repo' (which must be the path of a local git
593 def git_rev_parse(rev, repo):
594 gitout, giterr = arvados.util.run_command(
595 ['git', 'rev-parse', rev], cwd=repo)
596 return gitout.strip()
598 # uuid_type(api, object_uuid)
600 # Returns the name of the class that object_uuid belongs to, based on
601 # the second field of the uuid. This function consults the api's
602 # schema to identify the object class.
604 # It returns a string such as 'Collection', 'PipelineInstance', etc.
606 # Special case: if handed a Keep locator hash, return 'Collection'.
608 def uuid_type(api, object_uuid):
609 if re.match(r'^[a-f0-9]{32}\+[0-9]+(\+[A-Za-z0-9+-]+)?$', object_uuid):
611 p = object_uuid.split('-')
614 for k in api._schema.schemas:
615 obj_class = api._schema.schemas[k].get('uuidPrefix', None)
616 if type_prefix == obj_class:
620 def abort(msg, code=1):
621 logger.info("arv-copy: %s", msg)
625 # Code for reporting on the progress of a collection upload.
626 # Stolen from arvados.commands.put.ArvPutCollectionWriter
627 # TODO(twp): figure out how to refactor into a shared library
628 # (may involve refactoring some arvados.commands.arv_copy.copy_collection
631 def machine_progress(obj_uuid, bytes_written, bytes_expected):
632 return "{} {}: {} {} written {} total\n".format(
637 -1 if (bytes_expected is None) else bytes_expected)
639 def human_progress(obj_uuid, bytes_written, bytes_expected):
641 return "\r{}: {}M / {}M {:.1%} ".format(
643 bytes_written >> 20, bytes_expected >> 20,
644 float(bytes_written) / bytes_expected)
646 return "\r{}: {} ".format(obj_uuid, bytes_written)
648 class ProgressWriter(object):
649 _progress_func = None
652 def __init__(self, progress_func):
653 self._progress_func = progress_func
655 def report(self, obj_uuid, bytes_written, bytes_expected):
656 if self._progress_func is not None:
658 self._progress_func(obj_uuid, bytes_written, bytes_expected))
661 self.outfile.write("\n")
663 if __name__ == '__main__':