13 from collections import namedtuple
17 import arvados.commands._util as arv_cmd
18 import arvados.commands.put as arv_put
20 STAT_CACHE_ERRORS = (IOError, OSError, ValueError)
22 DockerImage = namedtuple('DockerImage',
23 ['repo', 'tag', 'hash', 'created', 'vsize'])
25 keepdocker_parser = argparse.ArgumentParser(add_help=False)
26 keepdocker_parser.add_argument(
27 '-f', '--force', action='store_true', default=False,
28 help="Re-upload the image even if it already exists on the server")
30 _group = keepdocker_parser.add_mutually_exclusive_group()
32 '--pull', action='store_true', default=False,
33 help="Try to pull the latest image from Docker registry")
35 '--no-pull', action='store_false', dest='pull',
36 help="Use locally installed image only, don't pull image from Docker registry (default)")
38 keepdocker_parser.add_argument(
40 help="Docker image to upload, as a repository name or hash")
41 keepdocker_parser.add_argument(
42 'tag', nargs='?', default='latest',
43 help="Tag of the Docker image to upload (default 'latest')")
45 # Combine keepdocker options listed above with run_opts options of arv-put.
46 # The options inherited from arv-put include --name, --project-uuid,
47 # --progress/--no-progress/--batch-progress and --resume/--no-resume.
48 arg_parser = argparse.ArgumentParser(
49 description="Upload or list Docker images in Arvados",
50 parents=[keepdocker_parser, arv_put.run_opts])
52 class DockerError(Exception):
56 def popen_docker(cmd, *args, **kwargs):
57 manage_stdin = ('stdin' not in kwargs)
58 kwargs.setdefault('stdin', subprocess.PIPE)
59 kwargs.setdefault('stdout', sys.stderr)
61 docker_proc = subprocess.Popen(['docker.io'] + cmd, *args, **kwargs)
62 except OSError: # No docker.io in $PATH
63 docker_proc = subprocess.Popen(['docker'] + cmd, *args, **kwargs)
65 docker_proc.stdin.close()
68 def check_docker(proc, description):
70 if proc.returncode != 0:
71 raise DockerError("docker {} returned status code {}".
72 format(description, proc.returncode))
75 # Yield a DockerImage tuple for each installed image.
76 list_proc = popen_docker(['images', '--no-trunc'], stdout=subprocess.PIPE)
77 list_output = iter(list_proc.stdout)
78 next(list_output) # Ignore the header line
79 for line in list_output:
81 size_index = len(words) - 2
82 repo, tag, imageid = words[:3]
83 ctime = ' '.join(words[3:size_index])
84 vsize = ' '.join(words[size_index:])
85 yield DockerImage(repo, tag, imageid, ctime, vsize)
86 list_proc.stdout.close()
87 check_docker(list_proc, "images")
89 def find_image_hashes(image_search, image_tag=None):
90 # Given one argument, search for Docker images with matching hashes,
91 # and return their full hashes in a set.
92 # Given two arguments, also search for a Docker image with the
93 # same repository and tag. If one is found, return its hash in a
94 # set; otherwise, fall back to the one-argument hash search.
95 # Returns None if no match is found, or a hash search is ambiguous.
96 hash_search = image_search.lower()
98 for image in docker_images():
99 if (image.repo == image_search) and (image.tag == image_tag):
100 return set([image.hash])
101 elif image.hash.startswith(hash_search):
102 hash_matches.add(image.hash)
105 def find_one_image_hash(image_search, image_tag=None):
106 hashes = find_image_hashes(image_search, image_tag)
107 hash_count = len(hashes)
110 elif hash_count == 0:
111 raise DockerError("no matching image found")
113 raise DockerError("{} images match {}".format(hash_count, image_search))
115 def stat_cache_name(image_file):
116 return getattr(image_file, 'name', image_file) + '.stat'
118 def pull_image(image_name, image_tag):
119 check_docker(popen_docker(['pull', '-t', image_tag, image_name]), "pull")
121 def save_image(image_hash, image_file):
122 # Save the specified Docker image to image_file, then try to save its
123 # stats so we can try to resume after interruption.
124 check_docker(popen_docker(['save', image_hash], stdout=image_file),
128 with open(stat_cache_name(image_file), 'w') as statfile:
129 json.dump(tuple(os.fstat(image_file.fileno())), statfile)
130 except STAT_CACHE_ERRORS:
131 pass # We won't resume from this cache. No big deal.
133 def prep_image_file(filename):
134 # Return a file object ready to save a Docker image,
135 # and a boolean indicating whether or not we need to actually save the
136 # image (False if a cached save is available).
137 cache_dir = arv_cmd.make_home_conf_dir(
138 os.path.join('.cache', 'arvados', 'docker'), 0o700)
139 if cache_dir is None:
140 image_file = tempfile.NamedTemporaryFile(suffix='.tar')
143 file_path = os.path.join(cache_dir, filename)
145 with open(stat_cache_name(file_path)) as statfile:
146 prev_stat = json.load(statfile)
147 now_stat = os.stat(file_path)
148 need_save = any(prev_stat[field] != now_stat[field]
149 for field in [ST_MTIME, ST_SIZE])
150 except STAT_CACHE_ERRORS + (AttributeError, IndexError):
151 need_save = True # We couldn't compare against old stats
152 image_file = open(file_path, 'w+b' if need_save else 'rb')
153 return image_file, need_save
155 def make_link(link_class, link_name, **link_attrs):
156 link_attrs.update({'link_class': link_class, 'name': link_name})
157 return arvados.api('v1').links().create(body=link_attrs).execute()
163 return datetime.datetime.strptime(t, "%Y-%m-%dT%H:%M:%SZ")
165 def list_images_in_arv():
166 existing_links = arvados.api('v1').links().list(filters=[['link_class', 'in', ['docker_image_hash', 'docker_image_repo+tag']]]).execute()['items']
168 for link in existing_links:
169 collection_uuid = link["head_uuid"]
170 if collection_uuid not in images:
171 images[collection_uuid]= {"dockerhash": "<none>",
174 "timestamp": ptimestamp("1970-01-01T00:00:01Z")}
176 if link["link_class"] == "docker_image_hash":
177 images[collection_uuid]["dockerhash"] = link["name"]
179 if link["link_class"] == "docker_image_repo+tag":
180 r = link["name"].split(":")
181 images[collection_uuid]["repo"] = r[0]
183 images[collection_uuid]["tag"] = r[1]
185 if "image_timestamp" in link["properties"]:
186 images[collection_uuid]["timestamp"] = ptimestamp(link["properties"]["image_timestamp"])
188 images[collection_uuid]["timestamp"] = ptimestamp(link["created_at"])
190 st = sorted(images.items(), lambda a, b: cmp(b[1]["timestamp"], a[1]["timestamp"]))
192 fmt = "{:30} {:10} {:12} {:29} {:20}"
193 print fmt.format("REPOSITORY", "TAG", "IMAGE ID", "COLLECTION", "CREATED")
195 print(fmt.format(j["repo"], j["tag"], j["dockerhash"][0:12], i, j["timestamp"].strftime("%c")))
197 def main(arguments=None):
198 args = arg_parser.parse_args(arguments)
200 if args.image is None or args.image == 'images':
204 # Pull the image if requested, unless the image is specified as a hash
205 # that we already have.
206 if args.pull and not find_image_hashes(args.image):
207 pull_image(args.image, args.tag)
210 image_hash = find_one_image_hash(args.image, args.tag)
211 except DockerError as error:
212 print >>sys.stderr, "arv-keepdocker:", error.message
215 image_repo_tag = '{}:{}'.format(args.image, args.tag) if not image_hash.startswith(args.image.lower()) else None
217 if args.name is None:
219 collection_name = 'Docker image {} {}'.format(image_repo_tag, image_hash[0:12])
221 collection_name = 'Docker image {}'.format(image_hash[0:12])
223 collection_name = args.name
225 api = arvados.api('v1')
228 # Check if this image is already in Arvados.
230 # Project where everything should be owned
231 parent_project_uuid = args.project_uuid if args.project_uuid else api.users().current().execute()['uuid']
233 # Find image hash tags
234 existing_links = api.links().list(
235 filters=[['link_class', '=', 'docker_image_hash'],
236 ['name', '=', image_hash]]).execute()['items']
238 # get readable collections
239 collections = api.collections().list(
240 filters=[['uuid', 'in', [link['head_uuid'] for link in existing_links]]],
241 select=["uuid", "owner_uuid", "name", "manifest_text"]).execute()['items']
244 # check for repo+tag links on these collections
245 existing_repo_tag = (api.links().list(
246 filters=[['link_class', '=', 'docker_image_repo+tag'],
247 ['name', '=', image_repo_tag],
248 ['head_uuid', 'in', collections]]).execute()['items']) if image_repo_tag else []
250 # Filter on elements owned by the parent project
251 owned_col = [c for c in collections if c['owner_uuid'] == parent_project_uuid]
252 owned_img = [c for c in existing_links if c['owner_uuid'] == parent_project_uuid]
253 owned_rep = [c for c in existing_repo_tag if c['owner_uuid'] == parent_project_uuid]
256 # already have a collection owned by this project
257 coll_uuid = owned_col[0]['uuid']
259 # create new collection owned by the project
260 coll_uuid = api.collections().create(body={"manifest_text": collections[0]['manifest_text'],
261 "name": collection_name,
262 "owner_uuid": parent_project_uuid},
263 ensure_unique_name=True).execute()['uuid']
265 link_base = {'owner_uuid': parent_project_uuid,
266 'head_uuid': coll_uuid }
269 # create image link owned by the project
270 make_link('docker_image_hash', image_hash, **link_base)
272 if not owned_rep and image_repo_tag:
273 # create repo+tag link owned by the project
274 make_link('docker_image_repo+tag', image_repo_tag, **link_base)
280 # Open a file for the saved image, and write it if needed.
281 outfile_name = '{}.tar'.format(image_hash)
282 image_file, need_save = prep_image_file(outfile_name)
284 save_image(image_hash, image_file)
286 # Call arv-put with switches we inherited from it
287 # (a.k.a., switches that aren't our own).
288 put_args = keepdocker_parser.parse_known_args(arguments)[1]
290 if args.name is None:
291 put_args += ['--name', collection_name]
293 coll_uuid = arv_put.main(
294 put_args + ['--filename', outfile_name, image_file.name]).strip()
296 # Read the image metadata and make Arvados links from it.
298 image_tar = tarfile.open(fileobj=image_file)
299 json_file = image_tar.extractfile(image_tar.getmember(image_hash + '/json'))
300 image_metadata = json.load(json_file)
303 link_base = {'head_uuid': coll_uuid, 'properties': {}}
304 if 'created' in image_metadata:
305 link_base['properties']['image_timestamp'] = image_metadata['created']
306 if args.project_uuid is not None:
307 link_base['owner_uuid'] = args.project_uuid
309 make_link('docker_image_hash', image_hash, **link_base)
311 make_link('docker_image_repo+tag', image_repo_tag,
316 for filename in [stat_cache_name(image_file), image_file.name]:
319 except OSError as error:
320 if error.errno != errno.ENOENT:
323 if __name__ == '__main__':