def _torrent_repo_verb(repository, tag, manifest, verb, **kwargs):
"""
Handles returning a torrent for the given verb on the given image and tag.
"""
if not features.BITTORRENT:
# Torrent feature is not enabled.
abort(406)
# Lookup an *existing* derived storage for the verb. If the verb's image storage doesn't exist,
# we cannot create it here, so we 406.
derived_image = registry_model.lookup_derived_image(
manifest,
verb,
storage,
varying_metadata={"tag": tag.name},
include_placements=True)
if derived_image is None:
abort(406)
# Return the torrent.
torrent = _torrent_for_blob(
derived_image.blob, model.repository.is_repository_public(repository))
# Log the action.
track_and_log("repo_verb",
wrap_repository(repository),
tag=tag.name,
verb=verb,
torrent=True,
**kwargs)
return torrent
def _repo_verb_signature(namespace,
repository,
tag_name,
verb,
checker=None,
**kwargs):
# Verify that the tag exists and that we have access to it.
tag, manifest, _ = _verify_repo_verb(storage, namespace, repository,
tag_name, verb, checker)
# Find the derived image storage for the verb.
derived_image = registry_model.lookup_derived_image(
manifest, verb, storage, varying_metadata={"tag": tag.name})
if derived_image is None or derived_image.blob.uploading:
return make_response("", 202)
# Check if we have a valid signer configured.
if not signer.name:
abort(404)
# Lookup the signature for the verb.
signature_value = registry_model.get_derived_image_signature(
derived_image, signer.name)
if signature_value is None:
abort(404)
# Return the signature.
return make_response(signature_value)
def _repo_verb(
namespace, repository, tag_name, verb, formatter, sign=False, checker=None, **kwargs
):
# Verify that the image exists and that we have access to it.
logger.debug(
"Verifying repo verb %s for repository %s/%s with user %s with mimetype %s",
verb,
namespace,
repository,
get_authenticated_user(),
request.accept_mimetypes.best,
)
tag, manifest, schema1_manifest = _verify_repo_verb(
storage, namespace, repository, tag_name, verb, checker
)
# Load the repository for later.
repo = model.repository.get_repository(namespace, repository)
if repo is None:
abort(404)
# Check for torrent, which is no longer supported.
if request.accept_mimetypes.best == "application/x-bittorrent":
abort(406)
# Log the action.
track_and_log("repo_verb", wrap_repository(repo), tag=tag.name, verb=verb, **kwargs)
is_readonly = app.config.get("REGISTRY_STATE", "normal") == "readonly"
# Lookup/create the derived image for the verb and repo image.
if is_readonly:
derived_image = registry_model.lookup_derived_image(
manifest, verb, storage, varying_metadata={"tag": tag.name}, include_placements=True
)
else:
derived_image = registry_model.lookup_or_create_derived_image(
manifest,
verb,
storage.preferred_locations[0],
storage,
varying_metadata={"tag": tag.name},
include_placements=True,
)
if derived_image is None:
logger.error("Could not create or lookup a derived image for manifest %s", manifest)
abort(400)
if derived_image is not None and not derived_image.blob.uploading:
logger.debug("Derived %s image %s exists in storage", verb, derived_image)
is_head_request = request.method == "HEAD"
if derived_image.blob.compressed_size:
image_pulled_bytes.labels("verbs").inc(derived_image.blob.compressed_size)
download_url = storage.get_direct_download_url(
derived_image.blob.placements, derived_image.blob.storage_path, head=is_head_request
)
if download_url:
logger.debug("Redirecting to download URL for derived %s image %s", verb, derived_image)
return redirect(download_url)
# Close the database handle here for this process before we send the long download.
database.close_db_filter(None)
logger.debug("Sending cached derived %s image %s", verb, derived_image)
return send_file(
storage.stream_read_file(
derived_image.blob.placements, derived_image.blob.storage_path
),
mimetype=LAYER_MIMETYPE,
)
logger.debug("Building and returning derived %s image", verb)
hasher = SimpleHasher()
# Close the database connection before any process forking occurs. This is important because
# the Postgres driver does not react kindly to forking, so we need to make sure it is closed
# so that each process will get its own unique connection.
database.close_db_filter(None)
def _cleanup():
# Close any existing DB connection once the process has exited.
database.close_db_filter(None)
def _store_metadata_and_cleanup():
if is_readonly:
return
with database.UseThenDisconnect(app.config):
registry_model.set_derived_image_size(derived_image, hasher.hashed_bytes)
# Create a queue process to generate the data. The queue files will read from the process
# and send the results to the client and storage.
unique_id = (
derived_image.unique_id
if derived_image is not None
else hashlib.sha256(("%s:%s" % (verb, uuid.uuid4())).encode("utf-8")).hexdigest()
)
handlers = [hasher.update]
reporter = VerbReporter(verb)
args = (formatter, tag, schema1_manifest, unique_id, handlers, reporter)
queue_process = QueueProcess(
_open_stream,
8 * 1024,
10 * 1024 * 1024, # 8K/10M chunk/max
args,
finished=_store_metadata_and_cleanup,
)
client_queue_file = QueueFile(
queue_process.create_queue(), "client", timeout=QUEUE_FILE_TIMEOUT
)
if not is_readonly:
storage_queue_file = QueueFile(
queue_process.create_queue(), "storage", timeout=QUEUE_FILE_TIMEOUT
)
# If signing is required, add a QueueFile for signing the image as we stream it out.
signing_queue_file = None
if sign and signer.name:
signing_queue_file = QueueFile(
queue_process.create_queue(), "signing", timeout=QUEUE_FILE_TIMEOUT
)
# Start building.
queue_process.run()
# Start the storage saving.
if not is_readonly:
storage_args = (verb, derived_image, storage_queue_file, namespace, repository, tag_name)
QueueProcess.run_process(_write_derived_image_to_storage, storage_args, finished=_cleanup)
if sign and signer.name:
signing_args = (verb, derived_image, signing_queue_file)
QueueProcess.run_process(_sign_derived_image, signing_args, finished=_cleanup)
# Close the database handle here for this process before we send the long download.
database.close_db_filter(None)
# Return the client's data.
return send_file(client_queue_file, mimetype=LAYER_MIMETYPE)
def _repo_verb(namespace,
repository,
tag_name,
verb,
formatter,
sign=False,
checker=None,
**kwargs):
# Verify that the image exists and that we have access to it.
logger.debug(
'Verifying repo verb %s for repository %s/%s with user %s with mimetype %s',
verb, namespace, repository, get_authenticated_user(),
request.accept_mimetypes.best)
tag, manifest, schema1_manifest = _verify_repo_verb(
storage, namespace, repository, tag_name, verb, checker)
# Load the repository for later.
repo = model.repository.get_repository(namespace, repository)
if repo is None:
abort(404)
# Check for torrent. If found, we return a torrent for the repo verb image (if the derived
# image already exists).
if request.accept_mimetypes.best == 'application/x-bittorrent':
metric_queue.repository_pull.Inc(
labelvalues=[namespace, repository, verb + '+torrent', True])
return _torrent_repo_verb(repo, tag, manifest, verb, **kwargs)
# Log the action.
track_and_log('repo_verb',
wrap_repository(repo),
tag=tag.name,
verb=verb,
**kwargs)
metric_queue.repository_pull.Inc(
labelvalues=[namespace, repository, verb, True])
is_readonly = app.config.get('REGISTRY_STATE', 'normal') == 'readonly'
# Lookup/create the derived image for the verb and repo image.
if is_readonly:
derived_image = registry_model.lookup_derived_image(
manifest,
verb,
storage,
varying_metadata={'tag': tag.name},
include_placements=True)
else:
derived_image = registry_model.lookup_or_create_derived_image(
manifest,
verb,
storage.preferred_locations[0],
storage,
varying_metadata={'tag': tag.name},
include_placements=True)
if derived_image is None:
logger.error(
'Could not create or lookup a derived image for manifest %s',
manifest)
abort(400)
if derived_image is not None and not derived_image.blob.uploading:
logger.debug('Derived %s image %s exists in storage', verb,
derived_image)
is_head_request = request.method == 'HEAD'
metric_queue.pull_byte_count.Inc(derived_image.blob.compressed_size,
labelvalues=[verb])
download_url = storage.get_direct_download_url(
derived_image.blob.placements,
derived_image.blob.storage_path,
head=is_head_request)
if download_url:
logger.debug('Redirecting to download URL for derived %s image %s',
verb, derived_image)
return redirect(download_url)
# Close the database handle here for this process before we send the long download.
database.close_db_filter(None)
logger.debug('Sending cached derived %s image %s', verb, derived_image)
return send_file(storage.stream_read_file(
derived_image.blob.placements, derived_image.blob.storage_path),
mimetype=LAYER_MIMETYPE)
logger.debug('Building and returning derived %s image', verb)
# Close the database connection before any process forking occurs. This is important because
# the Postgres driver does not react kindly to forking, so we need to make sure it is closed
# so that each process will get its own unique connection.
database.close_db_filter(None)
def _cleanup():
# Close any existing DB connection once the process has exited.
database.close_db_filter(None)
hasher = PieceHasher(app.config['BITTORRENT_PIECE_SIZE'])
def _store_metadata_and_cleanup():
if is_readonly:
return
with database.UseThenDisconnect(app.config):
registry_model.set_torrent_info(
derived_image.blob, app.config['BITTORRENT_PIECE_SIZE'],
hasher.final_piece_hashes())
registry_model.set_derived_image_size(derived_image,
hasher.hashed_bytes)
# Create a queue process to generate the data. The queue files will read from the process
# and send the results to the client and storage.
unique_id = (derived_image.unique_id if derived_image is not None else
hashlib.sha256('%s:%s' % (verb, uuid.uuid4())).hexdigest())
handlers = [hasher.update]
reporter = VerbReporter(verb)
args = (formatter, tag, schema1_manifest, unique_id, handlers, reporter)
queue_process = QueueProcess(
_open_stream,
8 * 1024,
10 * 1024 * 1024, # 8K/10M chunk/max
args,
finished=_store_metadata_and_cleanup)
client_queue_file = QueueFile(queue_process.create_queue(), 'client')
if not is_readonly:
storage_queue_file = QueueFile(queue_process.create_queue(), 'storage')
# If signing is required, add a QueueFile for signing the image as we stream it out.
signing_queue_file = None
if sign and signer.name:
signing_queue_file = QueueFile(queue_process.create_queue(),
'signing')
# Start building.
queue_process.run()
# Start the storage saving.
if not is_readonly:
storage_args = (verb, derived_image, storage_queue_file)
QueueProcess.run_process(_write_derived_image_to_storage,
storage_args,
finished=_cleanup)
if sign and signer.name:
signing_args = (verb, derived_image, signing_queue_file)
QueueProcess.run_process(_sign_derived_image,
signing_args,
finished=_cleanup)
# Close the database handle here for this process before we send the long download.
database.close_db_filter(None)
# Return the client's data.
return send_file(client_queue_file, mimetype=LAYER_MIMETYPE)
