diff --git a/README.md b/README.md deleted file mode 100644 index 3aecdc0..0000000 --- a/README.md +++ /dev/null @@ -1,10 +0,0 @@ -SWH-loader-core -=============== - -The Software Heritage Core Loader is a low-level loading utilities and -helpers used by other loaders. - -The main entry points are classes: -- :class:`swh.loader.core.loader.BaseLoader` for loaders (e.g. svn) -- :class:`swh.loader.core.loader.DVCSLoader` for DVCS loaders (e.g. hg, git, ...) -- :class:`swh.loader.package.loader.PackageLoader` for Package loaders (e.g. PyPI, Npm, ...) diff --git a/README.rst b/README.rst new file mode 120000 index 0000000..cffceba --- /dev/null +++ b/README.rst @@ -0,0 +1 @@ +docs/README.rst \ No newline at end of file diff --git a/docs/README.rst b/docs/README.rst new file mode 100644 index 0000000..bd8e072 --- /dev/null +++ b/docs/README.rst @@ -0,0 +1,31 @@ +.. _swh-loader-core: + +Software Heritage - Loader foundations +====================================== + +The Software Heritage Loader Core is a low-level loading utilities and +helpers used by :term:`loaders `. + +The main entry points are classes: +- :class:`swh.loader.core.loader.BaseLoader` for loaders (e.g. svn) +- :class:`swh.loader.core.loader.DVCSLoader` for DVCS loaders (e.g. hg, git, ...) +- :class:`swh.loader.package.loader.PackageLoader` for Package loaders (e.g. PyPI, Npm, ...) + +Package loaders +--------------- + +This package also implements many package loaders directly, out of convenience, +as they usually are quite similar and each fits in a single file. + +They all roughly follow these steps, explained in the +:py:meth:`swh.loader.package.loader.PackageLoader.load` documentation. + +VCS loaders +----------- + +Unlike package loaders, VCS loaders remain in separate packages, +as they often need more advanced conversions and very VCS-specific operations. + +This usually involves getting the branches of a repository and recursively loading +revisions in the history (and directory trees in these revisions), +until a known revision is found diff --git a/docs/index.rst b/docs/index.rst index 4803f6b..b93f51b 100644 --- a/docs/index.rst +++ b/docs/index.rst @@ -1,23 +1,15 @@ -.. _swh-loader-core: - -Software Heritage - Loader foundations -====================================== - -Low-level loading utilities and helpers used by other loaders. - +.. include:: README.rst .. toctree:: :maxdepth: 2 :caption: Contents: - README - Reference Documentation ----------------------- .. toctree:: :maxdepth: 2 cli /apidoc/swh.loader.core diff --git a/setup.py b/setup.py index d238685..cc62360 100755 --- a/setup.py +++ b/setup.py @@ -1,79 +1,79 @@ #!/usr/bin/env python3 # Copyright (C) 2015-2018 The Software Heritage developers # See the AUTHORS file at the top-level directory of this distribution # License: GNU General Public License version 3, or any later version # See top-level LICENSE file for more information from io import open from os import path from setuptools import find_packages, setup here = path.abspath(path.dirname(__file__)) # Get the long description from the README file -with open(path.join(here, "README.md"), encoding="utf-8") as f: +with open(path.join(here, "README.rst"), encoding="utf-8") as f: long_description = f.read() def parse_requirements(name=None): if name: reqf = "requirements-%s.txt" % name else: reqf = "requirements.txt" requirements = [] if not path.exists(reqf): return requirements with open(reqf) as f: for line in f.readlines(): line = line.strip() if not line or line.startswith("#"): continue requirements.append(line) return requirements setup( name="swh.loader.core", description="Software Heritage Base Loader", long_description=long_description, long_description_content_type="text/markdown", python_requires=">=3.7", author="Software Heritage developers", author_email="swh-devel@inria.fr", url="https://forge.softwareheritage.org/diffusion/DLDBASE", packages=find_packages(), # packages's modules scripts=[], # scripts to package install_requires=parse_requirements() + parse_requirements("swh"), setup_requires=["setuptools-scm"], use_scm_version=True, extras_require={"testing": parse_requirements("test")}, include_package_data=True, entry_points=""" [swh.cli.subcommands] loader=swh.loader.cli [swh.workers] loader.archive=swh.loader.package.archive:register loader.cran=swh.loader.package.cran:register loader.debian=swh.loader.package.debian:register loader.deposit=swh.loader.package.deposit:register loader.nixguix=swh.loader.package.nixguix:register loader.npm=swh.loader.package.npm:register loader.pypi=swh.loader.package.pypi:register """, classifiers=[ "Programming Language :: Python :: 3", "Intended Audience :: Developers", "License :: OSI Approved :: GNU General Public License v3 (GPLv3)", "Operating System :: OS Independent", "Development Status :: 5 - Production/Stable", ], project_urls={ "Bug Reports": "https://forge.softwareheritage.org/maniphest", "Funding": "https://www.softwareheritage.org/donate", "Source": "https://forge.softwareheritage.org/source/swh-loader-core", "Documentation": "https://docs.softwareheritage.org/devel/swh-loader-core/", }, ) diff --git a/swh/loader/package/loader.py b/swh/loader/package/loader.py index 10524ff..63bfd17 100644 --- a/swh/loader/package/loader.py +++ b/swh/loader/package/loader.py @@ -1,1028 +1,1034 @@ # Copyright (C) 2019-2021 The Software Heritage developers # See the AUTHORS file at the top-level directory of this distribution # License: GNU General Public License version 3, or any later version # See top-level LICENSE file for more information import datetime import hashlib from itertools import islice import json import logging import os import string import sys import tempfile from typing import ( Any, Dict, Generic, Iterable, Iterator, List, Mapping, Optional, Sequence, Set, Tuple, TypeVar, ) import attr import sentry_sdk from swh.core.tarball import uncompress from swh.loader.core.loader import BaseLoader from swh.loader.exception import NotFound from swh.loader.package.utils import download from swh.model import from_disk from swh.model.collections import ImmutableDict from swh.model.hashutil import hash_to_hex from swh.model.identifiers import ( CoreSWHID, ExtendedObjectType, ExtendedSWHID, ObjectType, ) from swh.model.model import ( ExtID, MetadataAuthority, MetadataAuthorityType, MetadataFetcher, Origin, OriginVisit, OriginVisitStatus, RawExtrinsicMetadata, Revision, Sha1Git, Snapshot, TargetType, ) from swh.storage.algos.snapshot import snapshot_get_latest from swh.storage.interface import StorageInterface from swh.storage.utils import now logger = logging.getLogger(__name__) SWH_METADATA_AUTHORITY = MetadataAuthority( type=MetadataAuthorityType.REGISTRY, url="https://softwareheritage.org/", metadata={}, ) """Metadata authority for extrinsic metadata generated by Software Heritage. Used for metadata on "original artifacts", ie. length, filename, and checksums of downloaded archive files.""" PartialExtID = Tuple[str, bytes] """The ``extid_type`` and ``extid`` fields of an :ref:py:`ExtID` object.""" @attr.s class RawExtrinsicMetadataCore: """Contains the core of the metadata extracted by a loader, that will be used to build a full RawExtrinsicMetadata object by adding object identifier, context, and provenance information.""" format = attr.ib(type=str) metadata = attr.ib(type=bytes) discovery_date = attr.ib(type=Optional[datetime.datetime], default=None) """Defaults to the visit date.""" @attr.s class BasePackageInfo: """Compute the primary key for a dict using the id_keys as primary key composite. Args: d: A dict entry to compute the primary key on id_keys: Sequence of keys to use as primary key Returns: The identity for that dict entry """ url = attr.ib(type=str) filename = attr.ib(type=Optional[str]) MANIFEST_FORMAT: Optional[string.Template] = None """If not None, used by the default extid() implementation to format a manifest, before hashing it to produce an ExtID.""" EXTID_TYPE: str = "package-manifest-sha256" # The following attribute has kw_only=True in order to allow subclasses # to add attributes. Without kw_only, attributes without default values cannot # go after attributes with default values. # See directory_extrinsic_metadata = attr.ib( type=List[RawExtrinsicMetadataCore], default=[], kw_only=True, ) # TODO: add support for metadata for directories and contents def extid(self) -> Optional[PartialExtID]: """Returns a unique intrinsic identifier of this package info, or None if this package info is not 'deduplicatable' (meaning that we will always load it, instead of checking the ExtID storage to see if we already did)""" if self.MANIFEST_FORMAT is None: return None else: manifest = self.MANIFEST_FORMAT.substitute( {k: str(v) for (k, v) in attr.asdict(self).items()} ) return (self.EXTID_TYPE, hashlib.sha256(manifest.encode()).digest()) TPackageInfo = TypeVar("TPackageInfo", bound=BasePackageInfo) class PackageLoader(BaseLoader, Generic[TPackageInfo]): # Origin visit type (str) set by the loader visit_type = "" visit_date: datetime.datetime def __init__( self, storage: StorageInterface, url: str, max_content_size: Optional[int] = None, ): """Loader's constructor. This raises exception if the minimal required configuration is missing (cf. fn:`check` method). Args: storage: Storage instance url: Origin url to load data from """ super().__init__(storage=storage, max_content_size=max_content_size) self.url = url self.visit_date = datetime.datetime.now(tz=datetime.timezone.utc) def get_versions(self) -> Sequence[str]: """Return the list of all published package versions. Raises: `class:swh.loader.exception.NotFound` error when failing to read the published package versions. Returns: Sequence of published versions """ return [] def get_package_info(self, version: str) -> Iterator[Tuple[str, TPackageInfo]]: """Given a release version of a package, retrieve the associated package information for such version. Args: version: Package version Returns: (branch name, package metadata) """ yield from {} def build_revision( self, p_info: TPackageInfo, uncompressed_path: str, directory: Sha1Git ) -> Optional[Revision]: """Build the revision from the archive metadata (extrinsic artifact metadata) and the intrinsic metadata. Args: p_info: Package information uncompressed_path: Artifact uncompressed path on disk Returns: Revision object """ raise NotImplementedError("build_revision") def get_default_version(self) -> str: """Retrieve the latest release version if any. Returns: Latest version """ return "" def last_snapshot(self) -> Optional[Snapshot]: """Retrieve the last snapshot out of the last visit. """ return snapshot_get_latest(self.storage, self.url) def known_artifacts( self, snapshot: Optional[Snapshot] ) -> Dict[Sha1Git, Optional[ImmutableDict[str, object]]]: """Retrieve the known releases/artifact for the origin. Args snapshot: snapshot for the visit Returns: Dict of keys revision id (bytes), values a metadata Dict. """ if not snapshot: return {} # retrieve only revisions (e.g the alias we do not want here) revs = [ rev.target for rev in snapshot.branches.values() if rev and rev.target_type == TargetType.REVISION ] known_revisions = self.storage.revision_get(revs) return { revision.id: revision.metadata for revision in known_revisions if revision } def new_packageinfo_to_extid(self, p_info: TPackageInfo) -> Optional[PartialExtID]: return p_info.extid() def known_artifact_to_extid(self, known_artifact: Dict) -> Optional[PartialExtID]: """Returns a unique intrinsic identifier of a downloaded artifact, used to check if a new artifact is the same.""" return None def resolve_revision_from_artifacts( self, known_artifacts: Dict[Sha1Git, Any], p_info: TPackageInfo, ) -> Optional[Sha1Git]: """Resolve the revision from known artifact metadata and a package info object. If the artifact has already been downloaded, this will return the existing revision targeting that uncompressed artifact directory. Otherwise, this returns None. Args: known_artifacts: dict from revision ids to revision metadata p_info: Package information Returns: None or revision identifier """ if not known_artifacts: # No known artifact, no need to compute the artifact's extid return None new_extid = self.new_packageinfo_to_extid(p_info) if new_extid is None: # This loader does not support deduplication, at least not for this # artifact. return None for rev_id, known_artifact in known_artifacts.items(): known_extid = self.known_artifact_to_extid(known_artifact) if new_extid == known_extid: return rev_id return None def _get_known_extids( self, packages_info: List[TPackageInfo] ) -> Dict[PartialExtID, List[CoreSWHID]]: """Compute the ExtIDs from new PackageInfo objects, searches which are already loaded in the archive, and returns them if any.""" # Compute the ExtIDs of all the new packages, grouped by extid type new_extids: Dict[str, List[bytes]] = {} for p_info in packages_info: res = p_info.extid() if res is not None: (extid_type, extid_extid) = res new_extids.setdefault(extid_type, []).append(extid_extid) # For each extid type, call extid_get_from_extid() with all the extids of # that type, and store them in the '(type, extid) -> target' map. known_extids: Dict[PartialExtID, List[CoreSWHID]] = {} for (extid_type, extids) in new_extids.items(): for extid in self.storage.extid_get_from_extid(extid_type, extids): if extid is not None: key = (extid.extid_type, extid.extid) known_extids.setdefault(key, []).append(extid.target) return known_extids def resolve_revision_from_extids( self, known_extids: Dict[PartialExtID, List[CoreSWHID]], p_info: TPackageInfo, revision_whitelist: Set[Sha1Git], ) -> Optional[Sha1Git]: """Resolve the revision from known ExtIDs and a package info object. If the artifact has already been downloaded, this will return the existing revision targeting that uncompressed artifact directory. Otherwise, this returns None. Args: known_extids: Dict built from a list of ExtID, with the target as value p_info: Package information revision_whitelist: Any ExtID with target not in this set is filtered out Returns: None or revision identifier """ new_extid = p_info.extid() if new_extid is None: return None for extid_target in known_extids.get(new_extid, []): if extid_target.object_id not in revision_whitelist: # There is a known ExtID for this package, but its target is not # in the snapshot. # This can happen for three reasons: # # 1. a loader crashed after writing the ExtID, but before writing # the snapshot # 2. some other loader loaded the same artifact, but produced # a different revision, causing an additional ExtID object # to be written. We will probably find this loader's ExtID # in a future iteration of this loop. # Note that for now, this is impossible, as each loader has a # completely different extid_type, but this is an implementation # detail of each loader. # 3. we took a snapshot, then the package disappeared, # then we took another snapshot, and the package reappeared # # In case of 1, we must actually load the package now, # so let's do it. # TODO: detect when we are in case 3 using revision_missing instead # of the snapshot. continue elif extid_target.object_type != ObjectType.REVISION: # We only support revisions for now. # Note that this case should never be reached unless there is a # collision between a revision hash and some non-revision object's # hash, but better safe than sorry. logger.warning( "%s is in the revision whitelist, but is not a revision.", hash_to_hex(extid_target.object_type), ) continue return extid_target.object_id return None def download_package( self, p_info: TPackageInfo, tmpdir: str ) -> List[Tuple[str, Mapping]]: """Download artifacts for a specific package. All downloads happen in in the tmpdir folder. Default implementation expects the artifacts package info to be about one artifact per package. Note that most implementation have 1 artifact per package. But some implementation have multiple artifacts per package (debian), some have none, the package is the artifact (gnu). Args: artifacts_package_info: Information on the package artifacts to download (url, filename, etc...) tmpdir: Location to retrieve such artifacts Returns: List of (path, computed hashes) """ return [download(p_info.url, dest=tmpdir, filename=p_info.filename)] def uncompress( self, dl_artifacts: List[Tuple[str, Mapping[str, Any]]], dest: str ) -> str: """Uncompress the artifact(s) in the destination folder dest. Optionally, this could need to use the p_info dict for some more information (debian). """ uncompressed_path = os.path.join(dest, "src") for a_path, _ in dl_artifacts: uncompress(a_path, dest=uncompressed_path) return uncompressed_path def extra_branches(self) -> Dict[bytes, Mapping[str, Any]]: """Return an extra dict of branches that are used to update the set of branches. """ return {} def finalize_visit( self, *, snapshot: Optional[Snapshot], visit: OriginVisit, status_visit: str, status_load: str, failed_branches: List[str], ) -> Dict[str, Any]: """Finalize the visit: - flush eventual unflushed data to storage - update origin visit's status - return the task's status """ self.storage.flush() snapshot_id: Optional[bytes] = None if snapshot and snapshot.id: # to prevent the snapshot.id to b"" snapshot_id = snapshot.id assert visit.visit visit_status = OriginVisitStatus( origin=self.url, visit=visit.visit, type=self.visit_type, date=now(), status=status_visit, snapshot=snapshot_id, ) self.storage.origin_visit_status_add([visit_status]) result: Dict[str, Any] = { "status": status_load, } if snapshot_id: result["snapshot_id"] = hash_to_hex(snapshot_id) if failed_branches: logger.warning("%d failed branches", len(failed_branches)) for i, urls in enumerate(islice(failed_branches, 50)): prefix_url = "Failed branches: " if i == 0 else "" logger.warning("%s%s", prefix_url, urls) return result def load(self) -> Dict: """Load for a specific origin the associated contents. - for each package version of the origin + 1. Get the list of versions in an origin. - 1. Fetch the files for one package version By default, this can be + 2. Get the snapshot from the previous run of the loader, + and filter out versions that were already loaded, if their + :term:`extids ` match + + Then, for each remaining version in the origin + + 3. Fetch the files for one package version By default, this can be implemented as a simple HTTP request. Loaders with more specific requirements can override this, e.g.: the PyPI loader checks the integrity of the downloaded files; the Debian loader has to download and check several files for one package version. - 2. Extract the downloaded files By default, this would be a universal + 4. Extract the downloaded files. By default, this would be a universal archive/tarball extraction. Loaders for specific formats can override this method (for instance, the Debian loader uses dpkg-source -x). - 3. Convert the extracted directory to a set of Software Heritage + 5. Convert the extracted directory to a set of Software Heritage objects Using swh.model.from_disk. - 4. Extract the metadata from the unpacked directories This would only + 6. Extract the metadata from the unpacked directories This would only be applicable for "smart" loaders like npm (parsing the package.json), PyPI (parsing the PKG-INFO file) or Debian (parsing debian/changelog and debian/control). On "minimal-metadata" sources such as the GNU archive, the lister should provide the minimal set of metadata needed to populate the revision/release objects (authors, dates) as an argument to the task. - 5. Generate the revision/release objects for the given version. From + 7. Generate the revision/release objects for the given version. From the data generated at steps 3 and 4. end for each - 6. Generate and load the snapshot for the visit + 8. Generate and load the snapshot for the visit - Using the revisions/releases collected at step 5., and the branch - information from step 0., generate a snapshot and load it into the + Using the revisions/releases collected at step 7., and the branch + information from step 2., generate a snapshot and load it into the Software Heritage archive """ status_load = "uneventful" # either: eventful, uneventful, failed status_visit = "full" # see swh.model.model.OriginVisitStatus snapshot = None failed_branches: List[str] = [] # Prepare origin and origin_visit origin = Origin(url=self.url) try: self.storage.origin_add([origin]) visit = list( self.storage.origin_visit_add( [ OriginVisit( origin=self.url, date=self.visit_date, type=self.visit_type, ) ] ) )[0] except Exception as e: logger.exception("Failed to initialize origin_visit for %s", self.url) sentry_sdk.capture_exception(e) return {"status": "failed"} # Get the previous snapshot for this origin. It is then used to see which # of the package's versions are already loaded in the archive. try: last_snapshot = self.last_snapshot() logger.debug("last snapshot: %s", last_snapshot) known_artifacts = self.known_artifacts(last_snapshot) logger.debug("known artifacts: %s", known_artifacts) except Exception as e: logger.exception("Failed to get previous state for %s", self.url) sentry_sdk.capture_exception(e) return self.finalize_visit( snapshot=snapshot, visit=visit, failed_branches=failed_branches, status_visit="failed", status_load="failed", ) load_exceptions: List[Exception] = [] # Get the list of all version names try: versions = self.get_versions() except NotFound: return self.finalize_visit( snapshot=snapshot, visit=visit, failed_branches=failed_branches, status_visit="not_found", status_load="failed", ) except Exception: return self.finalize_visit( snapshot=snapshot, visit=visit, failed_branches=failed_branches, status_visit="failed", status_load="failed", ) # Get the metadata of each version's package packages_info: List[Tuple[str, str, TPackageInfo]] = [ (version, branch_name, p_info) for version in versions for (branch_name, p_info) in self.get_package_info(version) ] # Compute the ExtID of each of these packages known_extids = self._get_known_extids( [p_info for (_, _, p_info) in packages_info] ) if last_snapshot is None: last_snapshot_targets: Set[Sha1Git] = set() else: last_snapshot_targets = { branch.target for branch in last_snapshot.branches.values() } new_extids: Set[ExtID] = set() tmp_revisions: Dict[str, List[Tuple[str, Sha1Git]]] = { version: [] for version in versions } for (version, branch_name, p_info) in packages_info: logger.debug("package_info: %s", p_info) # Check if the package was already loaded, using its ExtID revision_id = self.resolve_revision_from_extids( known_extids, p_info, last_snapshot_targets ) if revision_id is None: # No existing revision found from an acceptable ExtID, # search in the artifact data instead. # TODO: remove this after we finished migrating to ExtIDs. revision_id = self.resolve_revision_from_artifacts( known_artifacts, p_info ) if revision_id is None: # No matching revision found in the last snapshot, load it. try: res = self._load_revision(p_info, origin) if res: (revision_id, directory_id) = res assert revision_id assert directory_id self._load_extrinsic_directory_metadata( p_info, revision_id, directory_id ) self.storage.flush() status_load = "eventful" except Exception as e: self.storage.clear_buffers() load_exceptions.append(e) sentry_sdk.capture_exception(e) logger.exception( "Failed loading branch %s for %s", branch_name, self.url ) failed_branches.append(branch_name) continue if revision_id is None: continue partial_extid = p_info.extid() if partial_extid is not None: (extid_type, extid) = partial_extid revision_swhid = CoreSWHID( object_type=ObjectType.REVISION, object_id=revision_id ) new_extids.add( ExtID(extid_type=extid_type, extid=extid, target=revision_swhid) ) tmp_revisions[version].append((branch_name, revision_id)) if load_exceptions: status_visit = "partial" if not tmp_revisions: # We could not load any revisions; fail completely return self.finalize_visit( snapshot=snapshot, visit=visit, failed_branches=failed_branches, status_visit="failed", status_load="failed", ) try: # Retrieve the default release version (the "latest" one) default_version = self.get_default_version() logger.debug("default version: %s", default_version) # Retrieve extra branches extra_branches = self.extra_branches() logger.debug("extra branches: %s", extra_branches) snapshot = self._load_snapshot( default_version, tmp_revisions, extra_branches ) self.storage.flush() except Exception as e: logger.exception("Failed to build snapshot for origin %s", self.url) sentry_sdk.capture_exception(e) status_visit = "failed" status_load = "failed" if snapshot: try: metadata_objects = self.build_extrinsic_snapshot_metadata(snapshot.id) self._load_metadata_objects(metadata_objects) except Exception as e: logger.exception( "Failed to load extrinsic snapshot metadata for %s", self.url ) sentry_sdk.capture_exception(e) status_visit = "partial" status_load = "failed" try: metadata_objects = self.build_extrinsic_origin_metadata() self._load_metadata_objects(metadata_objects) except Exception as e: logger.exception( "Failed to load extrinsic origin metadata for %s", self.url ) sentry_sdk.capture_exception(e) status_visit = "partial" status_load = "failed" self._load_extids(new_extids) return self.finalize_visit( snapshot=snapshot, visit=visit, failed_branches=failed_branches, status_visit=status_visit, status_load=status_load, ) def _load_directory( self, dl_artifacts: List[Tuple[str, Mapping[str, Any]]], tmpdir: str ) -> Tuple[str, from_disk.Directory]: uncompressed_path = self.uncompress(dl_artifacts, dest=tmpdir) logger.debug("uncompressed_path: %s", uncompressed_path) directory = from_disk.Directory.from_disk( path=uncompressed_path.encode("utf-8"), max_content_length=self.max_content_size, ) contents, skipped_contents, directories = from_disk.iter_directory(directory) logger.debug("Number of skipped contents: %s", len(skipped_contents)) self.storage.skipped_content_add(skipped_contents) logger.debug("Number of contents: %s", len(contents)) self.storage.content_add(contents) logger.debug("Number of directories: %s", len(directories)) self.storage.directory_add(directories) return (uncompressed_path, directory) def _load_revision( self, p_info: TPackageInfo, origin ) -> Optional[Tuple[Sha1Git, Sha1Git]]: """Does all the loading of a revision itself: * downloads a package and uncompresses it * loads it from disk * adds contents, directories, and revision to self.storage * returns (revision_id, directory_id) Raises exception when unable to download or uncompress artifacts """ with tempfile.TemporaryDirectory() as tmpdir: dl_artifacts = self.download_package(p_info, tmpdir) (uncompressed_path, directory) = self._load_directory(dl_artifacts, tmpdir) # FIXME: This should be release. cf. D409 revision = self.build_revision( p_info, uncompressed_path, directory=directory.hash ) if not revision: # Some artifacts are missing intrinsic metadata # skipping those return None metadata = [metadata for (filepath, metadata) in dl_artifacts] extra_metadata: Tuple[str, Any] = ( "original_artifact", metadata, ) if revision.metadata is not None: full_metadata = list(revision.metadata.items()) + [extra_metadata] else: full_metadata = [extra_metadata] # TODO: don't add these extrinsic metadata to the revision. revision = attr.evolve(revision, metadata=ImmutableDict(full_metadata)) original_artifact_metadata = RawExtrinsicMetadata( target=ExtendedSWHID( object_type=ExtendedObjectType.DIRECTORY, object_id=revision.directory ), discovery_date=self.visit_date, authority=SWH_METADATA_AUTHORITY, fetcher=self.get_metadata_fetcher(), format="original-artifacts-json", metadata=json.dumps(metadata).encode(), origin=self.url, revision=CoreSWHID(object_type=ObjectType.REVISION, object_id=revision.id), ) self._load_metadata_objects([original_artifact_metadata]) logger.debug("Revision: %s", revision) self.storage.revision_add([revision]) assert directory.hash return (revision.id, directory.hash) def _load_snapshot( self, default_version: str, revisions: Dict[str, List[Tuple[str, bytes]]], extra_branches: Dict[bytes, Mapping[str, Any]], ) -> Optional[Snapshot]: """Build snapshot out of the current revisions stored and extra branches. Then load it in the storage. """ logger.debug("revisions: %s", revisions) # Build and load the snapshot branches = {} # type: Dict[bytes, Mapping[str, Any]] for version, branch_name_revisions in revisions.items(): if version == default_version and len(branch_name_revisions) == 1: # only 1 branch (no ambiguity), we can create an alias # branch 'HEAD' branch_name, _ = branch_name_revisions[0] # except for some corner case (deposit) if branch_name != "HEAD": branches[b"HEAD"] = { "target_type": "alias", "target": branch_name.encode("utf-8"), } for branch_name, target in branch_name_revisions: branches[branch_name.encode("utf-8")] = { "target_type": "revision", "target": target, } # Deal with extra-branches for name, branch_target in extra_branches.items(): if name in branches: logger.error("Extra branch '%s' has been ignored", name) else: branches[name] = branch_target snapshot_data = {"branches": branches} logger.debug("snapshot: %s", snapshot_data) snapshot = Snapshot.from_dict(snapshot_data) logger.debug("snapshot: %s", snapshot) self.storage.snapshot_add([snapshot]) return snapshot def get_loader_name(self) -> str: """Returns a fully qualified name of this loader.""" return f"{self.__class__.__module__}.{self.__class__.__name__}" def get_loader_version(self) -> str: """Returns the version of the current loader.""" module_name = self.__class__.__module__ or "" module_name_parts = module_name.split(".") # Iterate rootward through the package hierarchy until we find a parent of this # loader's module with a __version__ attribute. for prefix_size in range(len(module_name_parts), 0, -1): package_name = ".".join(module_name_parts[0:prefix_size]) module = sys.modules[package_name] if hasattr(module, "__version__"): return module.__version__ # type: ignore # If this loader's class has no parent package with a __version__, # it should implement it itself. raise NotImplementedError( f"Could not dynamically find the version of {self.get_loader_name()}." ) def get_metadata_fetcher(self) -> MetadataFetcher: """Returns a MetadataFetcher instance representing this package loader; which is used to for adding provenance information to extracted extrinsic metadata, if any.""" return MetadataFetcher( name=self.get_loader_name(), version=self.get_loader_version(), metadata={}, ) def get_metadata_authority(self) -> MetadataAuthority: """For package loaders that get extrinsic metadata, returns the authority the metadata are coming from. """ raise NotImplementedError("get_metadata_authority") def get_extrinsic_origin_metadata(self) -> List[RawExtrinsicMetadataCore]: """Returns metadata items, used by build_extrinsic_origin_metadata.""" return [] def build_extrinsic_origin_metadata(self) -> List[RawExtrinsicMetadata]: """Builds a list of full RawExtrinsicMetadata objects, using metadata returned by get_extrinsic_origin_metadata.""" metadata_items = self.get_extrinsic_origin_metadata() if not metadata_items: # If this package loader doesn't write metadata, no need to require # an implementation for get_metadata_authority. return [] authority = self.get_metadata_authority() fetcher = self.get_metadata_fetcher() metadata_objects = [] for item in metadata_items: metadata_objects.append( RawExtrinsicMetadata( target=Origin(self.url).swhid(), discovery_date=item.discovery_date or self.visit_date, authority=authority, fetcher=fetcher, format=item.format, metadata=item.metadata, ) ) return metadata_objects def get_extrinsic_snapshot_metadata(self) -> List[RawExtrinsicMetadataCore]: """Returns metadata items, used by build_extrinsic_snapshot_metadata.""" return [] def build_extrinsic_snapshot_metadata( self, snapshot_id: Sha1Git ) -> List[RawExtrinsicMetadata]: """Builds a list of full RawExtrinsicMetadata objects, using metadata returned by get_extrinsic_snapshot_metadata.""" metadata_items = self.get_extrinsic_snapshot_metadata() if not metadata_items: # If this package loader doesn't write metadata, no need to require # an implementation for get_metadata_authority. return [] authority = self.get_metadata_authority() fetcher = self.get_metadata_fetcher() metadata_objects = [] for item in metadata_items: metadata_objects.append( RawExtrinsicMetadata( target=ExtendedSWHID( object_type=ExtendedObjectType.SNAPSHOT, object_id=snapshot_id ), discovery_date=item.discovery_date or self.visit_date, authority=authority, fetcher=fetcher, format=item.format, metadata=item.metadata, origin=self.url, ) ) return metadata_objects def build_extrinsic_directory_metadata( self, p_info: TPackageInfo, revision_id: Sha1Git, directory_id: Sha1Git, ) -> List[RawExtrinsicMetadata]: if not p_info.directory_extrinsic_metadata: # If this package loader doesn't write metadata, no need to require # an implementation for get_metadata_authority. return [] authority = self.get_metadata_authority() fetcher = self.get_metadata_fetcher() metadata_objects = [] for item in p_info.directory_extrinsic_metadata: metadata_objects.append( RawExtrinsicMetadata( target=ExtendedSWHID( object_type=ExtendedObjectType.DIRECTORY, object_id=directory_id ), discovery_date=item.discovery_date or self.visit_date, authority=authority, fetcher=fetcher, format=item.format, metadata=item.metadata, origin=self.url, revision=CoreSWHID( object_type=ObjectType.REVISION, object_id=revision_id ), ) ) return metadata_objects def _load_extrinsic_directory_metadata( self, p_info: TPackageInfo, revision_id: Sha1Git, directory_id: Sha1Git, ) -> None: metadata_objects = self.build_extrinsic_directory_metadata( p_info, revision_id, directory_id ) self._load_metadata_objects(metadata_objects) def _load_metadata_objects( self, metadata_objects: List[RawExtrinsicMetadata] ) -> None: if not metadata_objects: # If this package loader doesn't write metadata, no need to require # an implementation for get_metadata_authority. return self._create_authorities(mo.authority for mo in metadata_objects) self._create_fetchers(mo.fetcher for mo in metadata_objects) self.storage.raw_extrinsic_metadata_add(metadata_objects) def _create_authorities(self, authorities: Iterable[MetadataAuthority]) -> None: deduplicated_authorities = { (authority.type, authority.url): authority for authority in authorities } if authorities: self.storage.metadata_authority_add(list(deduplicated_authorities.values())) def _create_fetchers(self, fetchers: Iterable[MetadataFetcher]) -> None: deduplicated_fetchers = { (fetcher.name, fetcher.version): fetcher for fetcher in fetchers } if fetchers: self.storage.metadata_fetcher_add(list(deduplicated_fetchers.values())) def _load_extids(self, extids: Set[ExtID]) -> None: if not extids: return try: self.storage.extid_add(list(extids)) except Exception as e: logger.exception("Failed to load new ExtIDs for %s", self.url) sentry_sdk.capture_exception(e) # No big deal, it just means the next visit will load the same versions # again.