Source code for swh.indexer.metadata

# Copyright (C) 2017-2022 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 copy import deepcopy
import hashlib
import logging
import time
from typing import (
from urllib.parse import urlparse

import pkg_resources
import sentry_sdk

from swh.core.config import merge_configs
from swh.core.utils import grouper
from swh.indexer.codemeta import merge_documents
from swh.indexer.indexer import (
from swh.indexer.metadata_detector import detect_metadata
from swh.indexer.metadata_dictionary import EXTRINSIC_MAPPINGS, INTRINSIC_MAPPINGS
from swh.indexer.metadata_dictionary.base import DirectoryLsEntry
from swh.indexer.origin_head import get_head_swhid
from import INDEXER_CFG_KEY, Sha1
from import (
from swh.model import hashutil
from swh.model.model import Directory, MetadataAuthorityType
from swh.model.model import ObjectType as ModelObjectType
from swh.model.model import Origin, RawExtrinsicMetadata, Sha1Git
from swh.model.swhids import CoreSWHID, ExtendedObjectType, ObjectType


T1 = TypeVar("T1")
T2 = TypeVar("T2")

logger = logging.getLogger(__name__)

[docs]def call_with_batches( f: Callable[[List[T1]], Iterable[T2]], args: List[T1], batch_size: int, ) -> Iterator[T2]: """Calls a function with batches of args, and concatenates the results.""" groups = grouper(args, batch_size) for group in groups: yield from f(list(group))
[docs]class ExtrinsicMetadataIndexer( BaseIndexer[Sha1Git, RawExtrinsicMetadata, OriginExtrinsicMetadataRow] ):
[docs] def process_journal_objects(self, objects: ObjectsDict) -> Dict: summary: Dict[str, Any] = {"status": "uneventful"} try: results = {} for item in objects.get("raw_extrinsic_metadata", []): remd = RawExtrinsicMetadata.from_dict(item) sentry_sdk.set_tag("swh-indexer-remd-swhid", str(remd.swhid())) for result in self.index(, data=remd): results[] = result except Exception: if not self.catch_exceptions: raise summary["status"] = "failed" return summary self.results = list(results.values()) summary_persist = self.persist_index_computations(self.results) if summary_persist: for value in summary_persist.values(): if value > 0: summary["status"] = "eventful" summary.update(summary_persist) return summary
[docs] def index( self, id: Sha1Git, data: Optional[RawExtrinsicMetadata], **kwargs, ) -> List[OriginExtrinsicMetadataRow]: if data is None: raise NotImplementedError( "ExtrinsicMetadataIndexer.index() without RawExtrinsicMetadata data" ) if == ExtendedObjectType.ORIGIN: origin_sha1 = elif data.origin is not None: # HACK: As swh-search does (yet?) not support searching on directories # and traversing back to origins, we index metadata on non-origins with # an origin context as if they were on the origin itself. origin_sha1 = hashlib.sha1(data.origin.encode()).digest() else: # other types are not supported yet return [] if data.authority.type == MetadataAuthorityType.REGISTRY: # metadata provided by a third-party; don't trust it # (technically this could be handled below, but we check it here # to return early; sparing a translation and origin lookup) # TODO: add ways to define trusted authorities return [] metadata_items = [] mappings: List[str] = [] for mapping_cls in EXTRINSIC_MAPPINGS.values(): if data.format in mapping_cls.extrinsic_metadata_formats(): mapping = mapping_cls() metadata_item = mapping.translate(data.metadata) if metadata_item is not None: metadata_items.append(metadata_item) mappings.append( if not metadata_items: # Don't have any mapping to parse it, ignore return [] # TODO: batch requests to origin_get_by_sha1() for _ in range(6): origins =[origin_sha1]) try: (origin,) = origins if origin is not None: break except ValueError: pass # The origin does not exist. This may be due to some replication lag # between the loader's DB/journal and the DB we are consuming from. # Wait a bit and try again logger.debug("Origin %s not found, sleeping for 10s.", time.sleep(10) else: # Does not exist, or replication lag > 60s. raise ValueError(f"Unknown origin {}") from None if urlparse(data.authority.url).netloc != urlparse(origin["url"]).netloc: # metadata provided by a third-party; don't trust it # TODO: add ways to define trusted authorities return [] metadata = merge_documents(metadata_items) return [ OriginExtrinsicMetadataRow( id=origin["url"], indexer_configuration_id=self.tool["id"],, mappings=mappings, metadata=metadata, ) ]
[docs] def persist_index_computations( self, results: List[OriginExtrinsicMetadataRow] ) -> Dict[str, int]: """Persist the results in storage.""" return self.idx_storage.origin_extrinsic_metadata_add(results)
[docs]class ContentMetadataIndexer(ContentIndexer[ContentMetadataRow]): """Content-level indexer This indexer is in charge of: - filtering out content already indexed in content_metadata - reading content from objstorage with the content's id sha1 - computing metadata by given context - using the metadata_dictionary as the 'swh-metadata-translator' tool - store result in content_metadata table """
[docs] def filter(self, ids): """Filter out known sha1s and return only missing ones.""" yield from self.idx_storage.content_metadata_missing( ( { "id": sha1, "indexer_configuration_id": self.tool["id"], } for sha1 in ids ) )
[docs] def index( self, id: Sha1, data: Optional[bytes] = None, log_suffix="unknown directory", **kwargs, ) -> List[ContentMetadataRow]: """Index sha1s' content and store result. Args: id: content's identifier data: raw content in bytes Returns: dict: dictionary representing a content_metadata. If the translation wasn't successful the metadata keys will be returned as None """ assert isinstance(id, bytes) assert data is not None metadata = None try: mapping_name = self.tool["tool_configuration"]["context"] log_suffix += ", content_id=%s" % hashutil.hash_to_hex(id) metadata = INTRINSIC_MAPPINGS[mapping_name](log_suffix).translate(data) except Exception: self.log.exception( "Problem during metadata translation " "for content %s" % hashutil.hash_to_hex(id) ) sentry_sdk.capture_exception() if metadata is None: return [] return [ ContentMetadataRow( id=id, indexer_configuration_id=self.tool["id"], metadata=metadata, ) ]
[docs] def persist_index_computations( self, results: List[ContentMetadataRow] ) -> Dict[str, int]: """Persist the results in storage.""" return self.idx_storage.content_metadata_add(results)
DEFAULT_CONFIG: Dict[str, Any] = { "tools": { "name": "swh.indexer.metadata", "version": pkg_resources.get_distribution("swh.indexer").version, "configuration": {}, }, }
[docs]class DirectoryMetadataIndexer(DirectoryIndexer[DirectoryIntrinsicMetadataRow]): """Directory-level indexer This indexer is in charge of: - filtering directories already indexed in directory_intrinsic_metadata table with defined computation tool - retrieve all entry_files in directory - use metadata_detector for file_names containing metadata - compute metadata translation if necessary and possible (depends on tool) - send sha1s to content indexing if possible - store the results for directory """ def __init__(self, *args, **kwargs): super().__init__(*args, **kwargs) self.config = merge_configs(DEFAULT_CONFIG, self.config)
[docs] def filter(self, sha1_gits): """Filter out known sha1s and return only missing ones.""" yield from self.idx_storage.directory_intrinsic_metadata_missing( ( { "id": sha1_git, "indexer_configuration_id": self.tool["id"], } for sha1_git in sha1_gits ) )
[docs] def index( self, id: Sha1Git, data: Optional[Directory] = None, **kwargs ) -> List[DirectoryIntrinsicMetadataRow]: """Index directory by processing it and organizing result. use metadata_detector to iterate on filenames, passes them to the content indexers, then merges (if more than one) Args: id: sha1_git of the directory data: should always be None Returns: dict: dictionary representing a directory_intrinsic_metadata, with keys: - id: directory's identifier (sha1_git) - indexer_configuration_id (bytes): tool used - metadata: dict of retrieved metadata """ dir_: List[DirectoryLsEntry] assert data is None, "Unexpected directory object" dir_ = cast( List[DirectoryLsEntry], list(, recursive=False)), ) try: if [entry["type"] for entry in dir_] == ["dir"]: # If the root is just a single directory, recurse into it # eg. PyPI packages, GNU tarballs subdir = dir_[0]["target"] dir_ = cast( List[DirectoryLsEntry], list(, recursive=False)), ) files = [entry for entry in dir_ if entry["type"] == "file"] (mappings, metadata) = self.translate_directory_intrinsic_metadata( files, log_suffix="directory=%s" % hashutil.hash_to_hex(id), ) except Exception as e: self.log.exception("Problem when indexing dir: %r", e) sentry_sdk.capture_exception() return [] return [ DirectoryIntrinsicMetadataRow( id=id, indexer_configuration_id=self.tool["id"], mappings=mappings, metadata=metadata, ) ]
[docs] def persist_index_computations( self, results: List[DirectoryIntrinsicMetadataRow] ) -> Dict[str, int]: """Persist the results in storage.""" # TODO: add functions in storage to keep data in # directory_intrinsic_metadata return self.idx_storage.directory_intrinsic_metadata_add(results)
[docs] def translate_directory_intrinsic_metadata( self, files: List[DirectoryLsEntry], log_suffix: str ) -> Tuple[List[Any], Any]: """ Determine plan of action to translate metadata in the given root directory Args: files: list of file entries, as returned by :meth:`` Returns: (List[str], dict): list of mappings used and dict with translated metadata according to the CodeMeta vocabulary """ metadata = [] # TODO: iterate on each context, on each file # -> get raw_contents # -> translate each content config = { k: self.config[k] for k in [INDEXER_CFG_KEY, "objstorage", "storage", "tools"] } all_detected_files = detect_metadata(files) used_mappings = [ INTRINSIC_MAPPINGS[context].name for context in all_detected_files ] for (mapping_name, detected_files) in all_detected_files.items(): cfg = deepcopy(config) cfg["tools"]["configuration"]["context"] = mapping_name c_metadata_indexer = ContentMetadataIndexer(config=cfg) # sha1s that are in content_metadata table sha1s_in_storage = [] metadata_generator = self.idx_storage.content_metadata_get(detected_files) for c in metadata_generator: # extracting metadata sha1 = sha1s_in_storage.append(sha1) local_metadata = c.metadata # local metadata is aggregated if local_metadata: metadata.append(local_metadata) sha1s_filtered = [ item for item in detected_files if item not in sha1s_in_storage ] if sha1s_filtered: # content indexing try: sha1s_filtered, log_suffix=log_suffix, ) # on the fly possibility: for result in c_metadata_indexer.results: local_metadata = result.metadata metadata.append(local_metadata) except Exception: self.log.exception("Exception while indexing metadata on contents") sentry_sdk.capture_exception() metadata = merge_documents(metadata) return (used_mappings, metadata)
[docs]class OriginMetadataIndexer( OriginIndexer[Tuple[OriginIntrinsicMetadataRow, DirectoryIntrinsicMetadataRow]] ): USE_TOOLS = False def __init__(self, config=None, **kwargs) -> None: super().__init__(config=config, **kwargs) self.directory_metadata_indexer = DirectoryMetadataIndexer(config=config)
[docs] def index_list( self, origins: List[Origin], *, check_origin_known: bool = True, **kwargs, ) -> List[Tuple[OriginIntrinsicMetadataRow, DirectoryIntrinsicMetadataRow]]: head_rev_ids = [] head_rel_ids = [] origin_heads: Dict[Origin, CoreSWHID] = {} # Filter out origins not in the storage if check_origin_known: known_origins = list( call_with_batches(, [origin.url for origin in origins], ORIGIN_GET_BATCH_SIZE, ) ) else: known_origins = list(origins) for origin in known_origins: if origin is None: continue head_swhid = get_head_swhid(, origin.url) if head_swhid: origin_heads[origin] = head_swhid if head_swhid.object_type == ObjectType.REVISION: head_rev_ids.append(head_swhid.object_id) elif head_swhid.object_type == ObjectType.RELEASE: head_rel_ids.append(head_swhid.object_id) else: assert False, head_swhid head_revs = dict( zip( head_rev_ids, call_with_batches(, head_rev_ids, REVISION_GET_BATCH_SIZE ), ) ) head_rels = dict( zip( head_rel_ids, call_with_batches(, head_rel_ids, RELEASE_GET_BATCH_SIZE ), ) ) results = [] for (origin, head_swhid) in origin_heads.items(): sentry_sdk.set_tag("swh-indexer-origin-url", origin.url) sentry_sdk.set_tag("swh-indexer-origin-head-swhid", str(head_swhid)) if head_swhid.object_type == ObjectType.REVISION: rev = head_revs[head_swhid.object_id] if not rev: self.log.warning( "Missing head object %s of origin %r", head_swhid, origin.url ) continue directory_id = elif head_swhid.object_type == ObjectType.RELEASE: rel = head_rels[head_swhid.object_id] if not rel: self.log.warning( "Missing head object %s of origin %r", head_swhid, origin.url ) continue if rel.target_type != ModelObjectType.DIRECTORY: # TODO self.log.warning( "Head release %s of %r has unexpected target type %s", head_swhid, origin.url, rel.target_type, ) continue assert, rel directory_id = else: assert False, head_swhid for dir_metadata in self.directory_metadata_indexer.index(directory_id): # There is at most one dir_metadata orig_metadata = OriginIntrinsicMetadataRow(, id=origin.url, metadata=dir_metadata.metadata, mappings=dir_metadata.mappings, indexer_configuration_id=dir_metadata.indexer_configuration_id, ) results.append((orig_metadata, dir_metadata)) return results
[docs] def persist_index_computations( self, results: List[Tuple[OriginIntrinsicMetadataRow, DirectoryIntrinsicMetadataRow]], ) -> Dict[str, int]: # Deduplicate directories dir_metadata: Dict[bytes, DirectoryIntrinsicMetadataRow] = {} orig_metadata: Dict[str, OriginIntrinsicMetadataRow] = {} summary: Dict = {} for (orig_item, dir_item) in results: assert dir_item.metadata == orig_item.metadata if dir_item.metadata and not (dir_item.metadata.keys() <= {"@context"}): # Only store non-empty metadata sets if not in dir_metadata: dir_metadata[] = dir_item if not in orig_metadata: orig_metadata[] = orig_item if dir_metadata: summary_dir = self.idx_storage.directory_intrinsic_metadata_add( list(dir_metadata.values()) ) summary.update(summary_dir) if orig_metadata: summary_ori = self.idx_storage.origin_intrinsic_metadata_add( list(orig_metadata.values()) ) summary.update(summary_ori) return summary