swh.storage.api.client module

class swh.storage.api.client.RemoteStorage(url, api_exception=None, timeout=None, chunk_size=4096, reraise_exceptions=None, **kwargs)[source]

Bases: swh.core.api.RPCClient

Proxy to a remote storage API

api_exception

alias of swh.storage.exc.StorageAPIError

backend_class

alias of swh.storage.interface.StorageInterface

reraise_exceptions: ClassVar[List[Type[Exception]]] = [<class 'swh.storage.exc.StorageArgumentException'>]
extra_type_decoders: Dict[str, Callable] = {'model': <function <lambda>>, 'model_enum': <function _decode_model_enum>, 'storage_enum': <function _decode_storage_enum>, 'swhid': <function parse_swhid>}
extra_type_encoders: List[Tuple[type, str, Callable]] = [(<class 'swh.model.model.BaseModel'>, 'model', <function _encode_model_object>), (<class 'swh.model.identifiers.SWHID'>, 'swhid', <class 'str'>), (<enum 'MetadataTargetType'>, 'model_enum', <function _encode_enum>), (<enum 'MetadataAuthorityType'>, 'model_enum', <function _encode_enum>), (<enum 'ListOrder'>, 'storage_enum', <function _encode_enum>)]
raise_for_status(response) → None[source]

check response HTTP status code and raise an exception if it denotes an error; do nothing otherwise

content_add(content: Iterable[Union[swh.model.model.Content, Dict[str, Any]]])[source]
reset()[source]
stat_counters()[source]
refresh_stat_counters()[source]
check_config(*, check_write: bool) → bool

Check that the storage is configured and ready to go.

clear_buffers(object_types: Sequence[str] = ()) → None

For backend storages (pg, storage, in-memory), this is a noop operation. For proxy storages (especially filter, buffer), this is an operation which cleans internal state.

content_add_metadata(content: List[swh.model.model.Content]) → Dict

Add content metadata to the storage (like content_add, but without inserting to the objstorage).

Parameters

content (iterable) –

iterable of dictionaries representing individual pieces of content to add. Each dictionary has the following keys:

  • length (int): content length (default: -1)

  • one key for each checksum algorithm in swh.model.hashutil.ALGORITHMS, mapped to the corresponding checksum

  • status (str): one of visible, hidden, absent

  • reason (str): if status = absent, the reason why

  • origin (int): if status = absent, the origin we saw the content in

  • ctime (datetime): time of insertion in the archive

Returns

content:add: New contents added skipped_content:add: New skipped contents (no data) added

Return type

Summary dict with the following key and associated values

content_find(content: Dict[str, Any]) → List[swh.model.model.Content]

Find a content hash in db.

Parameters

content – a dictionary representing one content hash, mapping checksum algorithm names (see swh.model.hashutil.ALGORITHMS) to checksum values

Raises

ValueError – in case the key of the dictionary is not sha1, sha1_git nor sha256.

Returns

an iterable of Content objects matching the search criteria if the content exist. Empty iterable otherwise.

content_get(contents: List[bytes]) → List[Optional[swh.model.model.Content]]

Retrieve content metadata in bulk

Parameters

content – List of content identifiers

Returns

List of contents model objects when they exist, None otherwise.

content_get_data(content: bytes) → Optional[bytes]

Given a content identifier, returns its associated data if any.

Parameters

content – sha1 identifier

Returns

raw content data (bytes)

content_get_partition(partition_id: int, nb_partitions: int, page_token: Optional[str] = None, limit: int = 1000) → swh.core.api.classes.PagedResult[swh.model.model.Content, str]

Splits contents into nb_partitions, and returns one of these based on partition_id (which must be in [0, nb_partitions-1])

There is no guarantee on how the partitioning is done, or the result order.

Parameters

  • partition_id – index of the partition to fetch

  • nb_partitions – total number of partitions to split into

  • page_token – opaque token used for pagination.

  • limit – Limit result (default to 1000)

Returns

PagedResult of Content model objects within the partition. If next_page_token is None, there is no longer data to retrieve.

content_get_random() → bytes

Finds a random content id.

Returns

a sha1_git

content_missing(contents: List[Dict[str, Any]], key_hash: str = 'sha1') → Iterable[bytes]

List content missing from storage

Parameters

  • content – iterable of dictionaries whose keys are either ‘length’ or an item of swh.model.hashutil.ALGORITHMS; mapped to the corresponding checksum (or length).

  • key_hash – name of the column to use as hash id result (default: ‘sha1’)

Raises

  • StorageArgumentException when key_hash is unknown. –

  • TODO – an exception when we get a hash collision.

Returns

iterable of missing content ids (as per the key_hash column)

content_missing_per_sha1(contents: List[bytes]) → Iterable[bytes]

List content missing from storage based only on sha1.

Parameters

contents – List of sha1 to check for absence.

Raises

TODO – an exception when we get a hash collision.

Returns

Iterable of missing content ids (sha1)

content_missing_per_sha1_git(contents: List[bytes]) → Iterable[bytes]

List content missing from storage based only on sha1_git.

Parameters

contents (List) – An iterable of content id (sha1_git)

Yields

missing contents sha1_git

content_update(contents: List[Dict[str, Any]], keys: List[str] = []) → None

Update content blobs to the storage. Does nothing for unknown contents or skipped ones.

Parameters

  • content –

    iterable of dictionaries representing individual pieces of content to update. Each dictionary has the following keys:

    • data (bytes): the actual content

    • length (int): content length (default: -1)

    • one key for each checksum algorithm in swh.model.hashutil.ALGORITHMS, mapped to the corresponding checksum

    • status (str): one of visible, hidden, absent

  • keys (list) – List of keys (str) whose values needs an update, e.g., new hash column

directory_add(directories: List[swh.model.model.Directory]) → Dict

Add directories to the storage

Parameters

directories (iterable) –

iterable of dictionaries representing the individual directories to add. Each dict has the following keys:

  • id (sha1_git): the id of the directory to add

  • entries (list): list of dicts for each entry in the

    directory. Each dict has the following keys:

    • name (bytes)

    • type (one of ‘file’, ‘dir’, ‘rev’): type of the directory entry (file, directory, revision)

    • target (sha1_git): id of the object pointed at by the directory entry

    • perms (int): entry permissions

Returns

directory:add: Number of directories actually added

Return type

Summary dict of keys with associated count as values

directory_entry_get_by_path(directory: bytes, paths: List[bytes]) → Optional[Dict[str, Any]]

Get the directory entry (either file or dir) from directory with path.

Parameters

  • directory – directory id

  • paths – path to lookup from the top level directory. From left (top) to right (bottom).

Returns

The corresponding directory entry as dict if found, None otherwise.

directory_get_random() → bytes

Finds a random directory id.

Returns

a sha1_git

directory_ls(directory: bytes, recursive: bool = False) → Iterable[Dict[str, Any]]

List entries for one directory.

If recursive=True, names in the path of a dir/file not at the root are concatenated with a slash (/).

Parameters

  • directory – the directory to list entries from.

  • recursive – if flag on, this list recursively from this directory.

Yields

directory entries for such directory.

directory_missing(directories: List[bytes]) → Iterable[bytes]

List directories missing from storage.

Parameters

directories – list of directory ids

Yields

missing directory ids

flush(object_types: Sequence[str] = ()) → Dict[str, int]

For backend storages (pg, storage, in-memory), this is expected to be a noop operation. For proxy storages (especially buffer), this is expected to trigger actual writes to the backend.

metadata_authority_add(authorities: List[swh.model.model.MetadataAuthority]) → None

Add new metadata authorities to the storage.

Their type and url together are unique identifiers of this authority; and metadata is an arbitrary dict of JSONable data with information about this authority, which must not be None (but may be empty).

Parameters

authorities – iterable of MetadataAuthority to be inserted

metadata_authority_get(type: swh.model.model.MetadataAuthorityType, url: str) → Optional[swh.model.model.MetadataAuthority]

Retrieve information about an authority

Parameters

  • type – one of “deposit_client”, “forge”, or “registry”

  • url – unique URI identifying the authority

Returns

a MetadataAuthority object (with a non-None metadata field) if it is known, else None.

metadata_fetcher_add(fetchers: List[swh.model.model.MetadataFetcher]) → None

Add new metadata fetchers to the storage.

Their name and version together are unique identifiers of this fetcher; and metadata is an arbitrary dict of JSONable data with information about this fetcher, which must not be None (but may be empty).

Parameters

fetchers – iterable of MetadataFetcher to be inserted

metadata_fetcher_get(name: str, version: str) → Optional[swh.model.model.MetadataFetcher]

Retrieve information about a fetcher

Parameters

  • name – the name of the fetcher

  • version – version of the fetcher

Returns

a MetadataFetcher object (with a non-None metadata field) if it is known, else None.

object_find_by_sha1_git(ids: List[bytes]) → Dict[bytes, List[Dict]]

Return the objects found with the given ids.

Parameters

ids – a generator of sha1_gits

Returns

A dict from id to the list of objects found for that id. Each object found is itself a dict with keys:

  • sha1_git: the input id

  • type: the type of object found

origin_add(origins: List[swh.model.model.Origin]) → Dict[str, int]

Add origins to the storage

Parameters

origins –

list of dictionaries representing the individual origins, with the following keys:

  • type: the origin type (‘git’, ‘svn’, ‘deb’, …)

  • url (bytes): the url the origin points to

Returns

Summary dict of keys with associated count as values

origin:add: Count of object actually stored in db

origin_count(url_pattern: str, regexp: bool = False, with_visit: bool = False) → int

Count origins whose urls contain a provided string pattern or match a provided regular expression. The pattern search in origin urls is performed in a case insensitive way.

Parameters

  • url_pattern (str) – the string pattern to search for in origin urls

  • regexp (bool) – if True, consider the provided pattern as a regular expression and return origins whose urls match it

  • with_visit (bool) – if True, filter out origins with no visit

Returns

The number of origins matching the search criterion.

Return type

int

origin_get(origins: List[str]) → Iterable[Optional[swh.model.model.Origin]]

Return origins.

Parameters

origin – a list of urls to find

Returns

the list of associated existing origin model objects. The unknown origins will be returned as None at the same index as the input.

origin_get_by_sha1(sha1s: List[bytes]) → List[Optional[Dict[str, Any]]]

Return origins, identified by the sha1 of their URLs.

Parameters

sha1s – a list of sha1s

Returns

List of origins dict whose sha1 of their url match, None otherwise.

origin_list(page_token: Optional[str] = None, limit: int = 100) → swh.core.api.classes.PagedResult[swh.model.model.Origin, str]

Returns the list of origins

Parameters

  • page_token – opaque token used for pagination.

  • limit – the maximum number of results to return

Returns

Page of Origin data model objects. if next_page_token is None, there is no longer data to retrieve.

Search for origins whose urls contain a provided string pattern or match a provided regular expression. The search is performed in a case insensitive way.

Parameters

  • url_pattern – the string pattern to search for in origin urls

  • page_token – opaque token used for pagination

  • limit – the maximum number of found origins to return

  • regexp – if True, consider the provided pattern as a regular expression and return origins whose urls match it

  • with_visit – if True, filter out origins with no visit

Yields

PagedResult of Origin

origin_visit_add(visits: List[swh.model.model.OriginVisit]) → Iterable[swh.model.model.OriginVisit]

Add visits to storage. If the visits have no id, they will be created and assigned one. The resulted visits are visits with their visit id set.

Parameters

visits – List of OriginVisit objects to add

Raises

StorageArgumentException if some origin visit reference unknown origins –

Returns

List[OriginVisit] stored

origin_visit_find_by_date(origin: str, visit_date: datetime.datetime) → Optional[swh.model.model.OriginVisit]

Retrieves the origin visit whose date is closest to the provided timestamp. In case of a tie, the visit with largest id is selected.

Parameters

  • origin – origin (URL)

  • visit_date – expected visit date

Returns

A visit if found, None otherwise

origin_visit_get(origin: str, page_token: Optional[str] = None, order: swh.storage.interface.ListOrder = <ListOrder.ASC: 'asc'>, limit: int = 10) → swh.core.api.classes.PagedResult[swh.model.model.OriginVisit, str]

Retrieve page of OriginVisit information.

Parameters

  • origin – The visited origin

  • page_token – opaque string used to get the next results of a search

  • order – Order on visit id fields to list origin visits (default to asc)

  • limit – Number of visits to return

Raises

  • StorageArgumentException if the order is wrong or the page_token type is –

  • mistyped. –

Returns: Page of OriginVisit data model objects. if next_page_token is None,

there is no longer data to retrieve.

origin_visit_get_by(origin: str, visit: int) → Optional[swh.model.model.OriginVisit]

Retrieve origin visit’s information.

Parameters

  • origin – origin (URL)

  • visit – visit id

Returns

The information on that particular OriginVisit or None if it does not exist

origin_visit_get_latest(origin: str, type: Optional[str] = None, allowed_statuses: Optional[List[str]] = None, require_snapshot: bool = False) → Optional[swh.model.model.OriginVisit]

Get the latest origin visit for the given origin, optionally looking only for those with one of the given allowed_statuses or for those with a snapshot.

Parameters

  • origin – origin URL

  • type – Optional visit type to filter on (e.g git, tar, dsc, svn,

  • hg –

  • npm –

  • pypi –

  • ..) –

  • allowed_statuses – list of visit statuses considered to find the latest visit. For instance, allowed_statuses=['full'] will only consider visits that have successfully run to completion.

  • require_snapshot – If True, only a visit with a snapshot will be returned.

Raises

  • StorageArgumentException if values for the allowed_statuses parameters –

  • are unknown –

Returns

OriginVisit matching the criteria if found, None otherwise. Note that as OriginVisit no longer held reference on the visit status or snapshot, you may want to use origin_visit_status_get_latest for those information.

origin_visit_status_add(visit_statuses: List[swh.model.model.OriginVisitStatus]) → None

Add origin visit statuses.

If there is already a status for the same origin and visit id at the same date, the new one will be either dropped or will replace the existing one (it is unspecified which one of these two behaviors happens).

Parameters

visit_statuses – origin visit statuses to add

Raises: StorageArgumentException if the origin of the visit status is unknown

origin_visit_status_get(origin: str, visit: int, page_token: Optional[str] = None, order: swh.storage.interface.ListOrder = <ListOrder.ASC: 'asc'>, limit: int = 10) → swh.core.api.classes.PagedResult[swh.model.model.OriginVisitStatus, str]

Retrieve page of OriginVisitStatus information.

Parameters

  • origin – The visited origin

  • visit – The visit identifier

  • page_token – opaque string used to get the next results of a search

  • order – Order on visit status objects to list (default to asc)

  • limit – Number of visit statuses to return

Returns: Page of OriginVisitStatus data model objects. if next_page_token is

None, there is no longer data to retrieve.

origin_visit_status_get_latest(origin_url: str, visit: int, allowed_statuses: Optional[List[str]] = None, require_snapshot: bool = False) → Optional[swh.model.model.OriginVisitStatus]

Get the latest origin visit status for the given origin visit, optionally looking only for those with one of the given allowed_statuses or with a snapshot.

Parameters

  • origin – origin URL

  • allowed_statuses – list of visit statuses considered to find the latest visit. Possible values are {created, ongoing, partial, full}. For instance, allowed_statuses=['full'] will only consider visits that have successfully run to completion.

  • require_snapshot – If True, only a visit with a snapshot will be returned.

Raises

  • StorageArgumentException if values for the allowed_statuses parameters –

  • are unknown –

Returns

The OriginVisitStatus matching the criteria

origin_visit_status_get_random(type: str) → Optional[Tuple[swh.model.model.OriginVisit, swh.model.model.OriginVisitStatus]]

Randomly select one successful origin visit with <type> made in the last 3 months.

Returns

One random tuple of (OriginVisit, OriginVisitStatus) matching the selection criteria

raw_extrinsic_metadata_add(metadata: List[swh.model.model.RawExtrinsicMetadata]) → None

Add extrinsic metadata on objects (contents, directories, …).

The authority and fetcher must be known to the storage before using this endpoint.

If there is already metadata for the same object, authority, fetcher, and at the same date; the new one will be either dropped or will replace the existing one (it is unspecified which one of these two behaviors happens).

Parameters

metadata – iterable of RawExtrinsicMetadata objects to be inserted.

raw_extrinsic_metadata_get(type: swh.model.model.MetadataTargetType, target: Union[str, swh.model.identifiers.SWHID], authority: swh.model.model.MetadataAuthority, after: Optional[datetime.datetime] = None, page_token: Optional[bytes] = None, limit: int = 1000) → swh.core.api.classes.PagedResult[swh.model.model.RawExtrinsicMetadata, str]

Retrieve list of all raw_extrinsic_metadata entries for the id

Parameters

  • type – one of the values of swh.model.model.MetadataTargetType

  • target – an URL if type is ‘origin’, else a core SWHID

  • authority – a dict containing keys type and url.

  • after – minimum discovery_date for a result to be returned

  • page_token – opaque token, used to get the next page of results

  • limit – maximum number of results to be returned

Returns

PagedResult of RawExtrinsicMetadata

release_add(releases: List[swh.model.model.Release]) → Dict

Add releases to the storage

Parameters

releases (List[dict]) –

iterable of dictionaries representing the individual releases to add. Each dict has the following keys:

  • id (sha1_git): id of the release to add

  • revision (sha1_git): id of the revision the release points to

  • date (dict): the date the release was made

  • name (bytes): the name of the release

  • comment (bytes): the comment associated with the release

  • author (Dict[str, bytes]): dictionary with keys: name, fullname, email

the date dictionary has the form defined in swh.model.

Returns

Summary dict of keys with associated count as values

release:add: New objects contents actually stored in db

release_get(releases: List[bytes]) → List[Optional[swh.model.model.Release]]

Given a list of sha1, return the releases’s information

Parameters

releases – list of sha1s

Returns

List of releases matching the identifiers or None if the release does not exist.

release_get_random() → bytes

Finds a random release id.

Returns

a sha1_git

release_missing(releases: List[bytes]) → Iterable[bytes]

List missing release ids from storage

Parameters

releases – release ids

Yields

a list of missing release ids

revision_add(revisions: List[swh.model.model.Revision]) → Dict

Add revisions to the storage

Parameters

revisions (List[dict]) –

iterable of dictionaries representing the individual revisions to add. Each dict has the following keys:

  • id (sha1_git): id of the revision to add

  • date (dict): date the revision was written

  • committer_date (dict): date the revision got added to the origin

  • type (one of ‘git’, ‘tar’): type of the revision added

  • directory (sha1_git): the directory the revision points at

  • message (bytes): the message associated with the revision

  • author (Dict[str, bytes]): dictionary with keys: name, fullname, email

  • committer (Dict[str, bytes]): dictionary with keys: name, fullname, email

  • metadata (jsonb): extra information as dictionary

  • synthetic (bool): revision’s nature (tarball, directory creates synthetic revision`)

  • parents (list[sha1_git]): the parents of this revision

date dictionaries have the form defined in swh.model.

Returns

Summary dict of keys with associated count as values

revision:add: New objects actually stored in db

revision_get(revision_ids: List[bytes]) → List[Optional[swh.model.model.Revision]]

Get revisions from storage

Parameters

revisions – revision ids

Returns

list of revision object (if the revision exists or None otherwise)

revision_get_random() → bytes

Finds a random revision id.

Returns

a sha1_git

revision_log(revisions: List[bytes], limit: Optional[int] = None) → Iterable[Optional[Dict[str, Any]]]

Fetch revision entry from the given root revisions.

Parameters

  • revisions – array of root revisions to lookup

  • limit – limitation on the output result. Default to None.

Yields

revision entries log from the given root root revisions

revision_missing(revisions: List[bytes]) → Iterable[bytes]

List revisions missing from storage

Parameters

revisions – revision ids

Yields

missing revision ids

revision_shortlog(revisions: List[bytes], limit: Optional[int] = None) → Iterable[Optional[Tuple[bytes, Tuple[bytes, …]]]]

Fetch the shortlog for the given revisions

Parameters

  • revisions – list of root revisions to lookup

  • limit – depth limitation for the output

Yields

a list of (id, parents) tuples

skipped_content_add(content: List[swh.model.model.SkippedContent]) → Dict

Add contents to the skipped_content list, which contains (partial) information about content missing from the archive.

Parameters

contents (iterable) –

iterable of dictionaries representing individual pieces of content to add. Each dictionary has the following keys:

  • length (Optional[int]): content length (default: -1)

  • one key for each checksum algorithm in swh.model.hashutil.ALGORITHMS, mapped to the corresponding checksum; each is optional

  • status (str): must be “absent”

  • reason (str): the reason why the content is absent

  • origin (int): if status = absent, the origin we saw the content in

Raises

  • The following exceptions can occur –

  • - HashCollision in case of collision –

  • - Any other exceptions raise by the backend –

  • In case of errors, some content may have been stored in –

  • the DB and in the objstorage. –

  • Since additions to both idempotent, that should not be a problem. –

Returns

skipped_content:add: New skipped contents (no data) added

Return type

Summary dict with the following key and associated values

skipped_content_missing(contents: List[Dict[str, Any]]) → Iterable[Dict[str, Any]]

List skipped contents missing from storage.

Parameters

contents – iterable of dictionaries containing the data for each checksum algorithm.

Returns

Iterable of missing skipped contents as dict

snapshot_add(snapshots: List[swh.model.model.Snapshot]) → Dict

Add snapshots to the storage.

Parameters

snapshot ([dict]) –

the snapshots to add, containing the following keys:

  • id (bytes): id of the snapshot

  • branches (dict): branches the snapshot contains, mapping the branch name (bytes) to the branch target, itself a dict (or None if the branch points to an unknown object)

    • target_type (str): one of content, directory, revision, release, snapshot, alias

    • target (bytes): identifier of the target (currently a sha1_git for all object kinds, or the name of the target branch for aliases)

Raises

ValueError – if the origin or visit id does not exist.

Returns

Summary dict of keys with associated count as values

snapshot:add: Count of object actually stored in db

snapshot_count_branches(snapshot_id: bytes) → Optional[Dict[Optional[str], int]]

Count the number of branches in the snapshot with the given id

Parameters

snapshot_id – snapshot identifier

Returns

A dict whose keys are the target types of branches and values their corresponding amount

snapshot_get(snapshot_id: bytes) → Optional[Dict[str, Any]]

Get the content, possibly partial, of a snapshot with the given id

The branches of the snapshot are iterated in the lexicographical order of their names.

Warning

At most 1000 branches contained in the snapshot will be returned for performance reasons. In order to browse the whole set of branches, the method snapshot_get_branches() should be used instead.

Parameters

snapshot_id – snapshot identifier

Returns

a dict with three keys:

  • id: identifier of the snapshot

  • branches: a dict of branches contained in the snapshot whose keys are the branches’ names.

  • next_branch: the name of the first branch not returned or None if the snapshot has less than 1000 branches.

Return type

dict

snapshot_get_branches(snapshot_id: bytes, branches_from: bytes = b'', branches_count: int = 1000, target_types: Optional[List[str]] = None) → Optional[swh.storage.interface.PartialBranches]

Get the content, possibly partial, of a snapshot with the given id

The branches of the snapshot are iterated in the lexicographical order of their names.

Parameters

  • snapshot_id – identifier of the snapshot

  • branches_from – optional parameter used to skip branches whose name is lesser than it before returning them

  • branches_count – optional parameter used to restrain the amount of returned branches

  • target_types – optional parameter used to filter the target types of branch to return (possible values that can be contained in that list are ‘content’, ‘directory’, ‘revision’, ‘release’, ‘snapshot’, ‘alias’)

Returns

None if the snapshot does not exist;
a dict with three keys otherwise:

  • id: identifier of the snapshot

  • branches: a dict of branches contained in the snapshot whose keys are the branches’ names.

  • next_branch: the name of the first branch not returned or None if the snapshot has less than branches_count branches after branches_from included.

Return type

dict

snapshot_get_random() → bytes

Finds a random snapshot id.

Returns

a sha1_git

snapshot_missing(snapshots: List[bytes]) → Iterable[bytes]

List snapshots missing from storage

Parameters

snapshots – snapshot ids

Yields

missing snapshot ids