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 logger = logging.getLogger('arvados.arv-copy')
35 logger.setLevel(logging.DEBUG)
37 parser = argparse.ArgumentParser(
38 description='Copy a pipeline instance from one Arvados instance to another.')
41 '--src', dest='source_arvados', required=True,
42 help='The name of the source Arvados instance. May be either a pathname to a config file, or the basename of a file in $HOME/.config/arvados/instance_name.conf.')
44 '--dst', dest='destination_arvados', required=True,
45 help='The name of the destination Arvados instance (interpreted as in --src)')
47 '--recursive', dest='recursive', action='store_true',
48 help='Recursively copy any dependencies for this object. (default)')
50 '--no-recursive', dest='recursive', action='store_false',
51 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.')
53 '--dst-git-repo', dest='dst_git_repo',
54 help='The name of the destination git repository. Required when copying a pipeline recursively.')
56 '--project_uuid', dest='project_uuid',
57 help='The UUID of the project at the destination to which the pipeline should be copied.')
60 help='The UUID of the object to be copied.')
61 parser.set_defaults(recursive=True)
63 args = parser.parse_args()
65 # Create API clients for the source and destination instances
66 src_arv = api_for_instance(args.source_arvados)
67 dst_arv = api_for_instance(args.destination_arvados)
69 # Identify the kind of object we have been given, and begin copying.
70 t = uuid_type(src_arv, args.object_uuid)
72 result = copy_collection(args.object_uuid, src=src_arv, dst=dst_arv)
73 elif t == 'PipelineInstance':
74 result = copy_pipeline_instance(args.object_uuid,
77 dst_project=args.project_uuid,
78 recursive=args.recursive)
79 elif t == 'PipelineTemplate':
80 result = copy_pipeline_template(args.object_uuid,
83 recursive=args.recursive)
85 abort("cannot copy object {} of type {}".format(args.object_uuid, t))
87 # If no exception was thrown and the response does not have an
88 # error_token field, presume success
89 if 'error_token' in result or 'uuid' not in result:
90 logger.error("API server returned an error result: {}".format(result))
94 logger.info("Success: created copy with uuid {}".format(result['uuid']))
97 # api_for_instance(instance_name)
99 # Creates an API client for the Arvados instance identified by
102 # If instance_name contains a slash, it is presumed to be a path
103 # (either local or absolute) to a file with Arvados configuration
106 # Otherwise, it is presumed to be the name of a file in
107 # $HOME/.config/arvados/instance_name.conf
109 def api_for_instance(instance_name):
110 if '/' in instance_name:
111 config_file = instance_name
113 config_file = os.path.join(os.environ['HOME'], '.config', 'arvados', "{}.conf".format(instance_name))
116 cfg = arvados.config.load(config_file)
117 except (IOError, OSError) as e:
118 abort(("Could not open config file {}: {}\n" +
119 "You must make sure that your configuration tokens\n" +
120 "for Arvados instance {} are in {} and that this\n" +
121 "file is readable.").format(
122 config_file, e, instance_name, config_file))
124 if 'ARVADOS_API_HOST' in cfg and 'ARVADOS_API_TOKEN' in cfg:
126 cfg.get('ARVADOS_API_HOST_INSECURE', '').lower() in set(
127 ['1', 't', 'true', 'y', 'yes']))
128 client = arvados.api('v1',
129 host=cfg['ARVADOS_API_HOST'],
130 token=cfg['ARVADOS_API_TOKEN'],
131 insecure=api_is_insecure,
134 abort('need ARVADOS_API_HOST and ARVADOS_API_TOKEN for {}'.format(instance_name))
137 # copy_pipeline_instance(pi_uuid, dst_git_repo, dst_project, recursive, src, dst)
139 # Copies a pipeline instance identified by pi_uuid from src to dst.
141 # If the 'recursive' option evaluates to True:
142 # 1. Copies all input collections
143 # * For each component in the pipeline, include all collections
144 # listed as job dependencies for that component)
145 # 2. Copy docker images
146 # 3. Copy git repositories
147 # 4. Copy the pipeline template
149 # The only changes made to the copied pipeline instance are:
150 # 1. The original pipeline instance UUID is preserved in
151 # the 'properties' hash as 'copied_from_pipeline_instance_uuid'.
152 # 2. The pipeline_template_uuid is changed to the new template uuid.
153 # 3. The owner_uuid of the instance is changed to the user who
156 def copy_pipeline_instance(pi_uuid, src, dst, dst_git_repo, dst_project=None, recursive=True):
157 # Fetch the pipeline instance record.
158 pi = src.pipeline_instances().get(uuid=pi_uuid).execute()
162 abort('--dst-git-repo is required when copying a pipeline recursively.')
163 # Copy the pipeline template and save the copied template.
164 if pi.get('pipeline_template_uuid', None):
165 pt = copy_pipeline_template(pi['pipeline_template_uuid'],
170 # Copy input collections, docker images and git repos.
171 pi = copy_collections(pi, src, dst)
172 copy_git_repos(pi, src, dst, dst_git_repo)
174 # Update the fields of the pipeline instance with the copied
176 if pi.get('pipeline_template_uuid', None):
177 pi['pipeline_template_uuid'] = pt['uuid']
181 print >>sys.stderr, "Copying only pipeline instance {}.".format(pi_uuid)
182 print >>sys.stderr, "You are responsible for making sure all pipeline dependencies have been updated."
184 # Update the pipeline instance properties, and create the new
186 pi['properties']['copied_from_pipeline_instance_uuid'] = pi_uuid
188 pi['owner_uuid'] = dst_project
192 pi['ensure_unique_name'] = True
194 new_pi = dst.pipeline_instances().create(body=pi).execute()
197 # copy_pipeline_template(pt_uuid, src, dst, dst_git_repo, recursive)
199 # Copies a pipeline template identified by pt_uuid from src to dst.
201 # If the 'recursive' option evaluates to true, also copy any collections,
202 # docker images and git repositories that this template references.
204 # The owner_uuid of the new template is changed to that of the user
205 # who copied the template.
207 # Returns the copied pipeline template object.
209 def copy_pipeline_template(pt_uuid, src, dst, dst_git_repo, recursive=True):
210 # fetch the pipeline template from the source instance
211 pt = src.pipeline_templates().get(uuid=pt_uuid).execute()
215 abort('--dst-git-repo is required when copying a pipeline recursively.')
216 # Copy input collections, docker images and git repos.
217 pt = copy_collections(pt, src, dst)
218 copy_git_repos(pt, src, dst, dst_git_repo)
220 pt['name'] = pt['name'] + ' copy'
221 pt['ensure_unique_name'] = True
225 return dst.pipeline_templates().create(body=pt).execute()
227 # copy_collections(obj, src, dst)
229 # Recursively copies all collections referenced by 'obj' from src
232 # Returns a copy of obj with any old collection uuids replaced by
235 def copy_collections(obj, src, dst):
236 if type(obj) in [str, unicode]:
237 if uuid_type(src, obj) == 'Collection':
238 newc = copy_collection(obj, src, dst)
239 if obj != newc['uuid'] and obj != newc['portable_data_hash']:
242 elif type(obj) == dict:
243 return {v: copy_collections(obj[v], src, dst) for v in obj}
244 elif type(obj) == list:
245 return [copy_collections(v, src, dst) for v in obj]
248 # copy_git_repos(p, src, dst, dst_repo)
250 # Copies all git repositories referenced by pipeline instance or
251 # template 'p' from src to dst.
253 # Git repository dependencies are identified by:
254 # * p['components'][c]['repository']
255 # * p['components'][c]['job']['repository']
256 # for each component c in the pipeline.
258 # The pipeline object is updated in place with the new repository
259 # names. The return value is undefined.
261 def copy_git_repos(p, src, dst, dst_repo):
263 for c in p['components']:
264 component = p['components'][c]
265 if 'repository' in component:
266 repo = component['repository']
267 if repo not in copied:
268 copy_git_repo(repo, src, dst, dst_repo)
270 component['repository'] = dst_repo
271 if 'job' in component and 'repository' in component['job']:
272 repo = component['job']['repository']
273 if repo not in copied:
274 copy_git_repo(repo, src, dst, dst_repo)
276 component['job']['repository'] = dst_repo
278 # copy_collection(obj_uuid, src, dst)
280 # Copies the collection identified by obj_uuid from src to dst.
281 # Returns the collection object created at dst.
283 # For this application, it is critical to preserve the
284 # collection's manifest hash, which is not guaranteed with the
285 # arvados.CollectionReader and arvados.CollectionWriter classes.
286 # Copying each block in the collection manually, followed by
287 # the manifest block, ensures that the collection's manifest
288 # hash will not change.
290 def copy_collection(obj_uuid, src, dst):
291 c = src.collections().get(uuid=obj_uuid).execute()
293 # Check whether a collection with this hash already exists
294 # at the destination. If so, just return that collection.
295 if 'portable_data_hash' in c:
296 colhash = c['portable_data_hash']
299 dstcol = dst.collections().list(
300 filters=[['portable_data_hash', '=', colhash]]
302 if dstcol['items_available'] > 0:
303 return dstcol['items'][0]
305 # Fetch the collection's manifest.
306 manifest = c['manifest_text']
307 logging.debug('copying collection %s', obj_uuid)
308 logging.debug('manifest_text = %s', manifest)
310 # Enumerate the block locators found in the manifest.
311 collection_blocks = sets.Set()
312 src_keep = arvados.keep.KeepClient(src)
313 for line in manifest.splitlines():
315 block_hash = line.split()[1]
316 collection_blocks.add(block_hash)
318 abort('bad manifest line in collection {}: {}'.format(obj_uuid, f))
320 # Copy each block from src_keep to dst_keep.
321 dst_keep = arvados.keep.KeepClient(dst)
322 for locator in collection_blocks:
323 data = src_keep.get(locator)
324 logger.debug('copying block %s', locator)
325 logger.info("Retrieved %d bytes", len(data))
328 # Copy the manifest and save the collection.
329 logger.debug('saving {} manifest: {}'.format(obj_uuid, manifest))
330 dst_keep.put(manifest)
334 if 'owner_uuid' in c:
336 c['ensure_unique_name'] = True
337 return dst.collections().create(body=c).execute()
339 # copy_git_repo(src_git_repo, src, dst, dst_git_repo)
341 # Copies commits from git repository 'src_git_repo' on Arvados
342 # instance 'src' to 'dst_git_repo' on 'dst'. Both src_git_repo
343 # and dst_git_repo are repository names, not UUIDs (i.e. "arvados"
346 # All commits will be copied to a destination branch named for the
347 # source repository URL.
349 # Because users cannot create their own repositories, the
350 # destination repository must already exist.
352 # The user running this command must be authenticated
353 # to both repositories.
355 def copy_git_repo(src_git_repo, src, dst, dst_git_repo):
356 # Identify the fetch and push URLs for the git repositories.
357 r = src.repositories().list(
358 filters=[['name', '=', src_git_repo]]).execute()
359 if r['items_available'] != 1:
360 raise Exception('cannot identify source repo {}; {} repos found'
361 .format(src_git_repo, r['items_available']))
362 src_git_url = r['items'][0]['fetch_url']
363 logger.debug('src_git_url: {}'.format(src_git_url))
365 r = dst.repositories().list(
366 filters=[['name', '=', dst_git_repo]]).execute()
367 if r['items_available'] != 1:
368 raise Exception('cannot identify destination repo {}; {} repos found'
369 .format(dst_git_repo, r['items_available']))
370 dst_git_push_url = r['items'][0]['push_url']
371 logger.debug('dst_git_push_url: {}'.format(dst_git_push_url))
373 tmprepo = tempfile.mkdtemp()
375 dst_branch = re.sub(r'\W+', '_', src_git_url)
376 arvados.util.run_command(
377 ["git", "clone", src_git_url, tmprepo],
378 cwd=os.path.dirname(tmprepo))
379 arvados.util.run_command(
380 ["git", "checkout", "-b", dst_branch],
382 arvados.util.run_command(["git", "remote", "add", "dst", dst_git_push_url], cwd=tmprepo)
383 arvados.util.run_command(["git", "push", "dst", dst_branch], cwd=tmprepo)
385 # uuid_type(api, object_uuid)
387 # Returns the name of the class that object_uuid belongs to, based on
388 # the second field of the uuid. This function consults the api's
389 # schema to identify the object class.
391 # It returns a string such as 'Collection', 'PipelineInstance', etc.
393 # Special case: if handed a Keep locator hash, return 'Collection'.
395 def uuid_type(api, object_uuid):
396 if re.match(r'^[a-f0-9]{32}\+[0-9]+(\+[A-Za-z0-9+-]+)?$', object_uuid):
398 p = object_uuid.split('-')
401 for k in api._schema.schemas:
402 obj_class = api._schema.schemas[k].get('uuidPrefix', None)
403 if type_prefix == obj_class:
407 def abort(msg, code=1):
408 print >>sys.stderr, "arv-copy:", msg
411 if __name__ == '__main__':