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 '--recursive', dest='recursive', action='store_true',
42 help='Recursively copy any dependencies for this object. (default)')
44 '--no-recursive', dest='recursive', action='store_false',
45 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.')
47 '--dst-git-repo', dest='dst_git_repo',
48 help='The name of the destination git repository.')
50 '--project_uuid', dest='project_uuid',
51 help='The UUID of the project at the destination to which the pipeline should be copied.')
54 help='The UUID of the object to be copied.')
57 help='The name of the source Arvados instance.')
59 'destination_arvados',
60 help='The name of the destination Arvados instance.')
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))
90 # api_for_instance(instance_name)
92 # Creates an API client for the Arvados instance identified by
93 # instance_name. Credentials must be stored in
94 # $HOME/.config/arvados/instance_name.conf
96 def api_for_instance(instance_name):
97 if '/' in instance_name:
98 abort('illegal instance name {}'.format(instance_name))
99 config_file = os.path.join(os.environ['HOME'], '.config', 'arvados', "{}.conf".format(instance_name))
100 cfg = arvados.config.load(config_file)
102 if 'ARVADOS_API_HOST' in cfg and 'ARVADOS_API_TOKEN' in cfg:
104 cfg.get('ARVADOS_API_HOST_INSECURE', '').lower() in set(
105 ['1', 't', 'true', 'y', 'yes']))
106 client = arvados.api('v1',
107 host=cfg['ARVADOS_API_HOST'],
108 token=cfg['ARVADOS_API_TOKEN'],
109 insecure=api_is_insecure,
112 abort('need ARVADOS_API_HOST and ARVADOS_API_TOKEN for {}'.format(instance_name))
115 # copy_pipeline_instance(pi_uuid, dst_git_repo, dst_project, recursive, src, dst)
117 # Copies a pipeline instance identified by pi_uuid from src to dst.
119 # If the 'recursive' option evaluates to True:
120 # 1. Copies all input collections
121 # * For each component in the pipeline, include all collections
122 # listed as job dependencies for that component)
123 # 2. Copy docker images
124 # 3. Copy git repositories
125 # 4. Copy the pipeline template
127 # The only changes made to the copied pipeline instance are:
128 # 1. The original pipeline instance UUID is preserved in
129 # the 'properties' hash as 'copied_from_pipeline_instance_uuid'.
130 # 2. The pipeline_template_uuid is changed to the new template uuid.
131 # 3. The owner_uuid of the instance is changed to the user who
134 def copy_pipeline_instance(pi_uuid, src, dst, dst_git_repo, dst_project=None, recursive=True):
135 # Fetch the pipeline instance record.
136 pi = src.pipeline_instances().get(uuid=pi_uuid).execute()
139 # Copy the pipeline template and save the copied template.
140 if pi.get('pipeline_template_uuid', None):
141 pt = copy_pipeline_template(pi['pipeline_template_uuid'],
146 # Copy input collections, docker images and git repos.
147 pi = copy_collections(pi, src, dst)
148 copy_git_repos(pi, src, dst, dst_git_repo)
150 # Update the fields of the pipeline instance with the copied
152 if pi.get('pipeline_template_uuid', None):
153 pi['pipeline_template_uuid'] = pt['uuid']
155 pi['owner_uuid'] = dst_project
161 print >>sys.stderr, "Copying only pipeline instance {}.".format(pi_uuid)
162 print >>sys.stderr, "You are responsible for making sure all pipeline dependencies have been updated."
164 # Create the new pipeline instance at the destination Arvados.
165 pi['properties']['copied_from_pipeline_instance_uuid'] = pi_uuid
167 pi['ensure_unique_name'] = True
168 new_pi = dst.pipeline_instances().create(body=pi).execute()
171 # copy_pipeline_template(pt_uuid, src, dst, dst_git_repo, recursive)
173 # Copies a pipeline template identified by pt_uuid from src to dst.
175 # If the 'recursive' option evaluates to true, also copy any collections,
176 # docker images and git repositories that this template references.
178 # The owner_uuid of the new template is changed to that of the user
179 # who copied the template.
181 # Returns the copied pipeline template object.
183 def copy_pipeline_template(pt_uuid, src, dst, dst_git_repo, recursive=True):
184 # fetch the pipeline template from the source instance
185 pt = src.pipeline_templates().get(uuid=pt_uuid).execute()
188 # Copy input collections, docker images and git repos.
189 pt = copy_collections(pt, src, dst)
190 copy_git_repos(pt, src, dst, dst_git_repo)
192 pt['name'] = pt['name'] + ' copy'
193 pt['ensure_unique_name'] = True
197 return dst.pipeline_templates().create(body=pt).execute()
199 # copy_collections(obj, src, dst)
201 # Recursively copies all collections referenced by 'obj' from src
204 # Returns a copy of obj with any old collection uuids replaced by
207 def copy_collections(obj, src, dst):
208 if type(obj) in [str, unicode]:
209 if uuid_type(src, obj) == 'Collection':
210 newc = copy_collection(obj, src, dst)
211 if obj != newc['uuid'] and obj != newc['portable_data_hash']:
214 elif type(obj) == dict:
215 return {v: copy_collections(obj[v], src, dst) for v in obj}
216 elif type(obj) == list:
217 return [copy_collections(v, src, dst) for v in obj]
220 # copy_git_repos(p, src, dst, dst_repo)
222 # Copies all git repositories referenced by pipeline instance or
223 # template 'p' from src to dst.
225 # Git repository dependencies are identified by:
226 # * p['components'][c]['repository']
227 # * p['components'][c]['job']['repository']
228 # for each component c in the pipeline.
230 # The pipeline object is updated in place with the new repository
231 # names. The return value is undefined.
233 def copy_git_repos(p, src, dst, dst_repo):
235 for c in p['components']:
236 component = p['components'][c]
237 if 'repository' in component:
238 repo = component['repository']
239 if repo not in copied:
240 copy_git_repo(repo, src, dst, dst_repo)
242 component['repository'] = dst_repo
243 if 'job' in component and 'repository' in component['job']:
244 repo = component['job']['repository']
245 if repo not in copied:
246 copy_git_repo(repo, src, dst, dst_repo)
248 component['job']['repository'] = dst_repo
250 # copy_collection(obj_uuid, src, dst)
252 # Copies the collection identified by obj_uuid from src to dst.
253 # Returns the collection object created at dst.
255 # For this application, it is critical to preserve the
256 # collection's manifest hash, which is not guaranteed with the
257 # arvados.CollectionReader and arvados.CollectionWriter classes.
258 # Copying each block in the collection manually, followed by
259 # the manifest block, ensures that the collection's manifest
260 # hash will not change.
262 def copy_collection(obj_uuid, src, dst):
263 c = src.collections().get(uuid=obj_uuid).execute()
265 # Check whether a collection with this hash already exists
266 # at the destination. If so, just return that collection.
267 if 'portable_data_hash' in c:
268 colhash = c['portable_data_hash']
271 dstcol = dst.collections().list(
272 filters=[['portable_data_hash', '=', colhash]]
274 if dstcol['items_available'] > 0:
275 return dstcol['items'][0]
277 # Fetch the collection's manifest.
278 manifest = c['manifest_text']
279 logging.debug('copying collection %s', obj_uuid)
280 logging.debug('manifest_text = %s', manifest)
282 # Enumerate the block locators found in the manifest.
283 collection_blocks = sets.Set()
284 src_keep = arvados.keep.KeepClient(src)
285 for line in manifest.splitlines():
287 block_hash = line.split()[1]
288 collection_blocks.add(block_hash)
290 abort('bad manifest line in collection {}: {}'.format(obj_uuid, f))
292 # Copy each block from src_keep to dst_keep.
293 dst_keep = arvados.keep.KeepClient(dst)
294 for locator in collection_blocks:
295 data = src_keep.get(locator)
296 logger.debug('copying block %s', locator)
297 logger.info("Retrieved %d bytes", len(data))
300 # Copy the manifest and save the collection.
301 logger.debug('saving {} manifest: {}'.format(obj_uuid, manifest))
302 dst_keep.put(manifest)
303 return dst.collections().create(body={"manifest_text": manifest}).execute()
305 # copy_git_repo(src_git_repo, src, dst, dst_git_repo)
307 # Copies commits from git repository 'src_git_repo' on Arvados
308 # instance 'src' to 'dst_git_repo' on 'dst'. Both src_git_repo
309 # and dst_git_repo are repository names, not UUIDs (i.e. "arvados"
312 # All commits will be copied to a destination branch named for the
313 # source repository URL.
315 # Because users cannot create their own repositories, the
316 # destination repository must already exist.
318 # The user running this command must be authenticated
319 # to both repositories.
321 def copy_git_repo(src_git_repo, src, dst, dst_git_repo):
322 # Identify the fetch and push URLs for the git repositories.
323 r = src.repositories().list(
324 filters=[['name', '=', src_git_repo]]).execute()
325 if r['items_available'] != 1:
326 raise Exception('cannot identify source repo {}; {} repos found'
327 .format(src_git_repo, r['items_available']))
328 src_git_url = r['items'][0]['fetch_url']
329 logger.debug('src_git_url: {}'.format(src_git_url))
331 r = dst.repositories().list(
332 filters=[['name', '=', dst_git_repo]]).execute()
333 if r['items_available'] != 1:
334 raise Exception('cannot identify source repo {}; {} repos found'
335 .format(dst_git_repo, r['items_available']))
336 dst_git_push_url = r['items'][0]['push_url']
337 logger.debug('dst_git_push_url: {}'.format(dst_git_push_url))
339 # If there is a /scratch partition available, attempt to use it
340 # to check out the git repo (which can be quite large)
341 if os.path.exists('/scratch'):
342 tempfile.tempdir = '/scratch/{}'.format(getpass.getuser())
343 os.mkdir(tempfile.tempdir)
344 tmprepo = tempfile.mkdtemp()
346 dst_branch = re.sub(r'\W+', '_', src_git_url)
347 arvados.util.run_command(
348 ["git", "clone", src_git_url, tmprepo],
349 cwd=os.path.dirname(tmprepo))
350 arvados.util.run_command(
351 ["git", "checkout", "-b", dst_branch],
353 arvados.util.run_command(["git", "remote", "add", "dst", dst_git_push_url], cwd=tmprepo)
354 arvados.util.run_command(["git", "push", "dst", dst_branch], cwd=tmprepo)
356 # uuid_type(api, object_uuid)
358 # Returns the name of the class that object_uuid belongs to, based on
359 # the second field of the uuid. This function consults the api's
360 # schema to identify the object class.
362 # It returns a string such as 'Collection', 'PipelineInstance', etc.
364 # Special case: if handed a Keep locator hash, return 'Collection'.
366 def uuid_type(api, object_uuid):
367 if re.match(r'^[a-f0-9]{32}\+[0-9]+(\+[A-Za-z0-9+-]+)?$', object_uuid):
369 p = object_uuid.split('-')
372 for k in api._schema.schemas:
373 obj_class = api._schema.schemas[k].get('uuidPrefix', None)
374 if type_prefix == obj_class:
378 def abort(msg, code=1):
379 print >>sys.stderr, "arv-copy:", msg
382 if __name__ == '__main__':