# Copyright (C) 2015 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 logging import traceback import uuid import psycopg2 import pygit2 from pygit2 import Oid, GIT_OBJ_BLOB, GIT_OBJ_TREE, GIT_OBJ_COMMIT, GIT_OBJ_TAG import requests from retrying import retry from swh.core import config from . import converters from .utils import get_objects_per_object_type def send_in_packets(source_list, formatter, sender, packet_size, packet_size_bytes=None, *args, **kwargs): """Send objects from `source_list`, passed through `formatter` (with extra args *args, **kwargs), using the `sender`, in packets of `packet_size` objects (and of max `packet_size_bytes`). """ formatted_objects = [] count = 0 if not packet_size_bytes: packet_size_bytes = 0 for obj in source_list: formatted_object = formatter(obj, *args, **kwargs) if formatted_object: formatted_objects.append(formatted_object) else: continue if packet_size_bytes: count += formatted_object['length'] if len(formatted_objects) >= packet_size or count > packet_size_bytes: sender(formatted_objects) formatted_objects = [] count = 0 if formatted_objects: sender(formatted_objects) def retry_loading(error): """Retry policy when we catch a recoverable error""" exception_classes = [ # raised when two parallel insertions insert the same data. psycopg2.IntegrityError, # raised when uWSGI restarts and hungs up on the worker. requests.exceptions.ConnectionError, ] if not any(isinstance(error, exc) for exc in exception_classes): return False logger = logging.getLogger('swh.loader.git.BulkLoader') error_name = error.__module__ + '.' + error.__class__.__name__ logger.warning('Retry loading a batch', exc_info=False, extra={ 'swh_type': 'storage_retry', 'swh_exception_type': error_name, 'swh_exception': traceback.format_exception( error.__class__, error, error.__traceback__, ), }) return True class BulkLoader(config.SWHConfig): """A bulk loader for a git repository""" DEFAULT_CONFIG = { 'storage_class': ('str', 'remote_storage'), 'storage_args': ('list[str]', ['http://localhost:5000/']), 'send_contents': ('bool', True), 'send_directories': ('bool', True), 'send_revisions': ('bool', True), 'send_releases': ('bool', True), 'send_occurrences': ('bool', True), 'content_packet_size': ('int', 10000), 'content_packet_size_bytes': ('int', 1024 * 1024 * 1024), 'directory_packet_size': ('int', 25000), 'revision_packet_size': ('int', 100000), 'release_packet_size': ('int', 100000), 'occurrence_packet_size': ('int', 100000), } def __init__(self, config): self.config = config if self.config['storage_class'] == 'remote_storage': from swh.storage.api.client import RemoteStorage as Storage else: from swh.storage import Storage self.storage = Storage(*self.config['storage_args']) self.log = logging.getLogger('swh.loader.git.BulkLoader') @retry(retry_on_exception=retry_loading, stop_max_attempt_number=3) def send_contents(self, content_list): """Actually send properly formatted contents to the database""" num_contents = len(content_list) log_id = str(uuid.uuid4()) self.log.debug("Sending %d contents" % num_contents, extra={ 'swh_type': 'storage_send_start', 'swh_content_type': 'content', 'swh_num': num_contents, 'swh_id': log_id, }) self.storage.content_add(content_list) self.log.debug("Done sending %d contents" % num_contents, extra={ 'swh_type': 'storage_send_end', 'swh_content_type': 'content', 'swh_num': num_contents, 'swh_id': log_id, }) @retry(retry_on_exception=retry_loading, stop_max_attempt_number=3) def send_directories(self, directory_list): """Actually send properly formatted directories to the database""" num_directories = len(directory_list) log_id = str(uuid.uuid4()) self.log.debug("Sending %d directories" % num_directories, extra={ 'swh_type': 'storage_send_start', 'swh_content_type': 'directory', 'swh_num': num_directories, 'swh_id': log_id, }) self.storage.directory_add(directory_list) self.log.debug("Done sending %d directories" % num_directories, extra={ 'swh_type': 'storage_send_end', 'swh_content_type': 'directory', 'swh_num': num_directories, 'swh_id': log_id, }) @retry(retry_on_exception=retry_loading, stop_max_attempt_number=3) def send_revisions(self, revision_list): """Actually send properly formatted revisions to the database""" num_revisions = len(revision_list) log_id = str(uuid.uuid4()) self.log.debug("Sending %d revisions" % num_revisions, extra={ 'swh_type': 'storage_send_start', 'swh_content_type': 'revision', 'swh_num': num_revisions, 'swh_id': log_id, }) self.storage.revision_add(revision_list) self.log.debug("Done sending %d revisions" % num_revisions, extra={ 'swh_type': 'storage_send_end', 'swh_content_type': 'revision', 'swh_num': num_revisions, 'swh_id': log_id, }) @retry(retry_on_exception=retry_loading, stop_max_attempt_number=3) def send_releases(self, release_list): """Actually send properly formatted releases to the database""" num_releases = len(release_list) log_id = str(uuid.uuid4()) self.log.debug("Sending %d releases" % num_releases, extra={ 'swh_type': 'storage_send_start', 'swh_content_type': 'release', 'swh_num': num_releases, 'swh_id': log_id, }) self.storage.release_add(release_list) self.log.debug("Done sending %d releases" % num_releases, extra={ 'swh_type': 'storage_send_end', 'swh_content_type': 'release', 'swh_num': num_releases, 'swh_id': log_id, }) @retry(retry_on_exception=retry_loading, stop_max_attempt_number=3) def send_occurrences(self, occurrence_list): """Actually send properly formatted occurrences to the database""" num_occurrences = len(occurrence_list) log_id = str(uuid.uuid4()) self.log.debug("Sending %d occurrences" % num_occurrences, extra={ 'swh_type': 'storage_send_start', 'swh_content_type': 'occurrence', 'swh_num': num_occurrences, 'swh_id': log_id, }) self.storage.occurrence_add(occurrence_list) self.log.debug("Done sending %d occurrences" % num_occurrences, extra={ 'swh_type': 'storage_send_end', 'swh_content_type': 'occurrence', 'swh_num': num_occurrences, 'swh_id': log_id, }) def get_or_create_origin(self, origin_url): origin = converters.origin_url_to_origin(origin_url) origin['id'] = self.storage.origin_add_one(origin) return origin def repo_origin(self, repo, origin_url): log_id = str(uuid.uuid4()) self.log.debug('Creating origin for %s' % origin_url, extra={ 'swh_type': 'storage_send_start', 'swh_content_type': 'origin', 'swh_num': 1, 'swh_id': log_id }) origin = self.get_or_create_origin(origin_url) self.log.debug('Done creating origin for %s' % origin_url, extra={ 'swh_type': 'storage_send_end', 'swh_content_type': 'origin', 'swh_num': 1, 'swh_id': log_id }) return origin def bulk_send_blobs(self, repo, blobs, origin_id): """Format blobs as swh contents and send them to the database""" packet_size = self.config['content_packet_size'] packet_size_bytes = self.config['content_packet_size_bytes'] max_content_size = self.config['content_size_limit'] send_in_packets(blobs, converters.blob_to_content, self.send_contents, packet_size, repo=repo, packet_size_bytes=packet_size_bytes, log=self.log, max_content_size=max_content_size, origin_id=origin_id) def bulk_send_trees(self, repo, trees): """Format trees as swh directories and send them to the database""" packet_size = self.config['directory_packet_size'] send_in_packets(trees, converters.tree_to_directory, self.send_directories, packet_size, repo=repo, log=self.log) def bulk_send_commits(self, repo, commits): """Format commits as swh revisions and send them to the database""" packet_size = self.config['revision_packet_size'] send_in_packets(commits, converters.commit_to_revision, self.send_revisions, packet_size, repo=repo, log=self.log) def bulk_send_annotated_tags(self, repo, tags): """Format annotated tags (pygit2.Tag objects) as swh releases and send them to the database """ packet_size = self.config['release_packet_size'] send_in_packets(tags, converters.annotated_tag_to_release, self.send_releases, packet_size, repo=repo, log=self.log) def bulk_send_refs(self, repo, refs): """Format git references as swh occurrences and send them to the database """ packet_size = self.config['occurrence_packet_size'] send_in_packets(refs, converters.ref_to_occurrence, self.send_occurrences, packet_size) def list_repo_refs(self, repo, origin_id, authority_id, validity): """List all the refs from the given repository. Args: - repo (pygit2.Repository): the repository to list - origin_id (int): the id of the origin from which the repo is taken - validity (datetime.datetime): the validity date for the repository's refs - authority_id (int): the id of the authority on `validity`. Returns: A list of dicts with keys: - branch (str): name of the ref - revision (sha1_git): revision pointed at by the ref - origin (int) - validity (datetime.DateTime) - authority (int) Compatible with occurrence_add. """ log_id = str(uuid.uuid4()) refs = [] ref_names = repo.listall_references() for ref_name in ref_names: ref = repo.lookup_reference(ref_name) target = ref.target if not isinstance(target, Oid): self.log.debug("Peeling symbolic ref %s pointing at %s" % ( ref_name, ref.target), extra={ 'swh_type': 'git_sym_ref_peel', 'swh_name': ref_name, 'swh_target': str(ref.target), 'swh_id': log_id, }) target_obj = ref.peel() else: target_obj = repo[target] if target_obj.type == GIT_OBJ_TAG: self.log.debug("Peeling ref %s pointing at tag %s" % ( ref_name, target_obj.name), extra={ 'swh_type': 'git_ref_peel', 'swh_name': ref_name, 'swh_target': str(target_obj.name), 'swh_id': log_id, }) target_obj = ref.peel() if not target_obj.type == GIT_OBJ_COMMIT: self.log.info("Skipping ref %s pointing to %s %s" % ( ref_name, target_obj.__class__.__name__, target_obj.id.hex), extra={ 'swh_type': 'git_ref_skip', 'swh_name': ref_name, 'swh_target': str(target_obj), 'swh_id': log_id, }) refs.append({ 'branch': ref_name, 'revision': target_obj.id.raw, 'origin': origin_id, 'validity': validity, 'authority': authority_id, }) return refs def list_repo_objs(self, repo): """List all the objects from repo. Args: - repo (pygit2.Repository): the repository to list Returns: a dict containing lists of `Oid`s with keys for each object type: - GIT_OBJ_BLOB - GIT_OBJ_TREE - GIT_OBJ_COMMIT - GIT_OBJ_TAG """ log_id = str(uuid.uuid4()) self.log.info("Started listing %s" % repo.path, extra={ 'swh_type': 'git_list_objs_start', 'swh_repo': repo.path, 'swh_id': log_id, }) objects = get_objects_per_object_type(repo) self.log.info("Done listing the objects in %s: %d contents, " "%d directories, %d revisions, %d releases" % ( repo.path, len(objects[GIT_OBJ_BLOB]), len(objects[GIT_OBJ_TREE]), len(objects[GIT_OBJ_COMMIT]), len(objects[GIT_OBJ_TAG]), ), extra={ 'swh_type': 'git_list_objs_end', 'swh_repo': repo.path, 'swh_num_blobs': len(objects[GIT_OBJ_BLOB]), 'swh_num_trees': len(objects[GIT_OBJ_TREE]), 'swh_num_commits': len(objects[GIT_OBJ_COMMIT]), 'swh_num_tags': len(objects[GIT_OBJ_TAG]), 'swh_id': log_id, }) return objects def open_repo(self, repo_path): return pygit2.Repository(repo_path) def load_repo(self, repo, objects, refs, origin_id): if self.config['send_contents']: self.bulk_send_blobs(repo, objects[GIT_OBJ_BLOB], origin_id) else: self.log.info('Not sending contents') if self.config['send_directories']: self.bulk_send_trees(repo, objects[GIT_OBJ_TREE]) else: self.log.info('Not sending directories') if self.config['send_revisions']: self.bulk_send_commits(repo, objects[GIT_OBJ_COMMIT]) else: self.log.info('Not sending revisions') if self.config['send_releases']: self.bulk_send_annotated_tags(repo, objects[GIT_OBJ_TAG]) else: self.log.info('Not sending releases') if self.config['send_occurrences']: self.bulk_send_refs(repo, refs) else: self.log.info('Not sending occurrences') def process(self, repo_path, origin_url, authority_id, validity): # Open repository repo = self.open_repo(repo_path) # Add origin to storage if needed, use the one from config if not origin = self.repo_origin(repo, origin_url) # Parse all the refs from our repo refs = self.list_repo_refs(repo, origin['id'], authority_id, validity) if not refs: self.log.info('Skipping empty repository %s' % repo_path, extra={ 'swh_type': 'git_repo_list_refs', 'swh_repo': repo_path, 'swh_num_refs': 0, }) return else: self.log.info('Listed %d refs for repo %s' % ( len(refs), repo_path), extra={ 'swh_type': 'git_repo_list_refs', 'swh_repo': repo_path, 'swh_num_refs': len(refs), }) # We want to load the repository, walk all the objects objects = self.list_repo_objs(repo) # Finally, load the repository self.load_repo(repo, objects, refs, origin['id'])