diff --git a/swh/storage/db.py b/swh/storage/db.py index 3e9be28..9112989 100644 --- a/swh/storage/db.py +++ b/swh/storage/db.py @@ -1,972 +1,968 @@ # Copyright (C) 2015-2016 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 binascii import datetime import functools import json import psycopg2 import psycopg2.extras import select import tempfile import time from contextlib import contextmanager TMP_CONTENT_TABLE = 'tmp_content' psycopg2.extras.register_uuid() def stored_procedure(stored_proc): """decorator to execute remote stored procedure, specified as argument Generally, the body of the decorated function should be empty. If it is not, the stored procedure will be executed first; the function body then. """ def wrap(meth): @functools.wraps(meth) def _meth(self, *args, **kwargs): cur = kwargs.get('cur', None) self._cursor(cur).execute('SELECT %s()' % stored_proc) meth(self, *args, **kwargs) return _meth return wrap def jsonize(value): """Convert a value to a psycopg2 JSON object if necessary""" if isinstance(value, dict): return psycopg2.extras.Json(value) return value def entry_to_bytes(entry): """Convert an entry coming from the database to bytes""" if isinstance(entry, memoryview): return entry.tobytes() if isinstance(entry, list): return [entry_to_bytes(value) for value in entry] return entry def line_to_bytes(line): """Convert a line coming from the database to bytes""" if not line: return line if isinstance(line, dict): return {k: entry_to_bytes(v) for k, v in line.items()} return line.__class__(entry_to_bytes(entry) for entry in line) def cursor_to_bytes(cursor): """Yield all the data from a cursor as bytes""" yield from (line_to_bytes(line) for line in cursor) class BaseDb: """Base class for swh.storage.*Db. cf. swh.storage.db.Db, swh.storage.archiver.db.ArchiverDb """ @classmethod def connect(cls, *args, **kwargs): """factory method to create a DB proxy Accepts all arguments of psycopg2.connect; only some specific possibilities are reported below. Args: connstring: libpq2 connection string """ conn = psycopg2.connect(*args, **kwargs) return cls(conn) def _cursor(self, cur_arg): """get a cursor: from cur_arg if given, or a fresh one otherwise meant to avoid boilerplate if/then/else in methods that proxy stored procedures """ if cur_arg is not None: return cur_arg # elif self.cur is not None: # return self.cur else: return self.conn.cursor() def __init__(self, conn): """create a DB proxy Args: conn: psycopg2 connection to the SWH DB """ self.conn = conn @contextmanager def transaction(self): """context manager to execute within a DB transaction Yields: a psycopg2 cursor """ with self.conn.cursor() as cur: try: yield cur self.conn.commit() except: if not self.conn.closed: self.conn.rollback() raise class Db(BaseDb): """Proxy to the SWH DB, with wrappers around stored procedures """ def mktemp(self, tblname, cur=None): self._cursor(cur).execute('SELECT swh_mktemp(%s)', (tblname,)) def mktemp_dir_entry(self, entry_type, cur=None): self._cursor(cur).execute('SELECT swh_mktemp_dir_entry(%s)', (('directory_entry_%s' % entry_type),)) @stored_procedure('swh_mktemp_revision') def mktemp_revision(self, cur=None): pass @stored_procedure('swh_mktemp_release') def mktemp_release(self, cur=None): pass @stored_procedure('swh_mktemp_occurrence_history') def mktemp_occurrence_history(self, cur=None): pass @stored_procedure('swh_mktemp_entity_lister') def mktemp_entity_lister(self, cur=None): pass @stored_procedure('swh_mktemp_entity_history') def mktemp_entity_history(self, cur=None): pass @stored_procedure('swh_mktemp_bytea') def mktemp_bytea(self, cur=None): pass def copy_to(self, items, tblname, columns, cur=None, item_cb=None): def escape(data): if data is None: return '' if isinstance(data, bytes): return '\\x%s' % binascii.hexlify(data).decode('ascii') elif isinstance(data, str): return '"%s"' % data.replace('"', '""') elif isinstance(data, datetime.datetime): # We escape twice to make sure the string generated by # isoformat gets escaped return escape(data.isoformat()) elif isinstance(data, dict): return escape(json.dumps(data)) elif isinstance(data, list): return escape("{%s}" % ','.join(escape(d) for d in data)) elif isinstance(data, psycopg2.extras.Range): # We escape twice here too, so that we make sure # everything gets passed to copy properly return escape( '%s%s,%s%s' % ( '[' if data.lower_inc else '(', '-infinity' if data.lower_inf else escape(data.lower), 'infinity' if data.upper_inf else escape(data.upper), ']' if data.upper_inc else ')', ) ) else: # We don't escape here to make sure we pass literals properly return str(data) with tempfile.TemporaryFile('w+') as f: for d in items: if item_cb is not None: item_cb(d) line = [escape(d.get(k)) for k in columns] f.write(','.join(line)) f.write('\n') f.seek(0) self._cursor(cur).copy_expert('COPY %s (%s) FROM STDIN CSV' % ( tblname, ', '.join(columns)), f) def register_listener(self, notify_queue, cur=None): """Register a listener for NOTIFY queue `notify_queue`""" self._cursor(cur).execute("LISTEN %s" % notify_queue) def listen_notifies(self, timeout): """Listen to notifications for `timeout` seconds""" if select.select([self.conn], [], [], timeout) == ([], [], []): return else: self.conn.poll() while self.conn.notifies: yield self.conn.notifies.pop(0) @stored_procedure('swh_content_add') def content_add_from_temp(self, cur=None): pass @stored_procedure('swh_directory_add') def directory_add_from_temp(self, cur=None): pass @stored_procedure('swh_skipped_content_add') def skipped_content_add_from_temp(self, cur=None): pass @stored_procedure('swh_revision_add') def revision_add_from_temp(self, cur=None): pass @stored_procedure('swh_release_add') def release_add_from_temp(self, cur=None): pass @stored_procedure('swh_occurrence_history_add') def occurrence_history_add_from_temp(self, cur=None): pass @stored_procedure('swh_entity_history_add') def entity_history_add_from_temp(self, cur=None): pass def store_tmp_bytea(self, ids, cur=None): """Store the given identifiers in a new tmp_bytea table""" cur = self._cursor(cur) self.mktemp_bytea(cur) self.copy_to(({'id': elem} for elem in ids), 'tmp_bytea', ['id'], cur) content_get_metadata_keys = ['sha1', 'sha1_git', 'sha256', 'length', 'status'] def content_get_metadata_from_temp(self, cur=None): cur = self._cursor(cur) cur.execute("""select t.id as sha1, %s from tmp_bytea t left join content on t.id = content.sha1 """ % ', '.join(self.content_get_metadata_keys[1:])) yield from cursor_to_bytes(cur) def content_missing_from_temp(self, cur=None): cur = self._cursor(cur) cur.execute("""SELECT sha1, sha1_git, sha256 FROM swh_content_missing()""") yield from cursor_to_bytes(cur) def content_missing_per_sha1_from_temp(self, cur=None): cur = self._cursor(cur) cur.execute("""SELECT * FROM swh_content_missing_per_sha1()""") yield from cursor_to_bytes(cur) def skipped_content_missing_from_temp(self, cur=None): cur = self._cursor(cur) cur.execute("""SELECT sha1, sha1_git, sha256 FROM swh_skipped_content_missing()""") yield from cursor_to_bytes(cur) def occurrence_get(self, origin_id, cur=None): """Retrieve latest occurrence's information by origin_id. """ cur = self._cursor(cur) cur.execute("""SELECT origin, branch, target, target_type, (select max(date) from origin_visit where origin=%s) as date FROM occurrence WHERE origin=%s """, (origin_id, origin_id)) yield from cursor_to_bytes(cur) def content_find(self, sha1=None, sha1_git=None, sha256=None, cur=None): """Find the content optionally on a combination of the following checksums sha1, sha1_git or sha256. Args: sha1: sha1 content git_sha1: the sha1 computed `a la git` sha1 of the content sha256: sha256 content Returns: The triplet (sha1, sha1_git, sha256) if found or None. """ cur = self._cursor(cur) cur.execute("""SELECT sha1, sha1_git, sha256, length, ctime, status FROM swh_content_find(%s, %s, %s) LIMIT 1""", (sha1, sha1_git, sha256)) content = line_to_bytes(cur.fetchone()) if set(content) == {None}: return None else: return content provenance_cols = ['content', 'revision', 'origin', 'visit', 'path'] def content_find_provenance(self, sha1_git, cur=None): """Find content's provenance information Args: sha1: sha1_git content cur: cursor to use Returns: Provenance information on such content """ cur = self._cursor(cur) cur.execute("""SELECT content, revision, origin, visit, path FROM swh_content_find_provenance(%s)""", (sha1_git, )) yield from cursor_to_bytes(cur) def directory_get_from_temp(self, cur=None): cur = self._cursor(cur) cur.execute('''SELECT id, file_entries, dir_entries, rev_entries FROM swh_directory_get()''') yield from cursor_to_bytes(cur) def directory_missing_from_temp(self, cur=None): cur = self._cursor(cur) cur.execute('SELECT * FROM swh_directory_missing()') yield from cursor_to_bytes(cur) directory_ls_cols = ['dir_id', 'type', 'target', 'name', 'perms', 'status', 'sha1', 'sha1_git', 'sha256'] def directory_walk_one(self, directory, cur=None): cur = self._cursor(cur) cur.execute('SELECT * FROM swh_directory_walk_one(%s)', (directory,)) yield from cursor_to_bytes(cur) def directory_walk(self, directory, cur=None): cur = self._cursor(cur) cur.execute('SELECT * FROM swh_directory_walk(%s)', (directory,)) yield from cursor_to_bytes(cur) def revision_missing_from_temp(self, cur=None): cur = self._cursor(cur) cur.execute('SELECT id FROM swh_revision_missing() as r(id)') yield from cursor_to_bytes(cur) revision_add_cols = [ 'id', 'date', 'date_offset', 'date_neg_utc_offset', 'committer_date', 'committer_date_offset', 'committer_date_neg_utc_offset', 'type', 'directory', 'message', 'author_fullname', 'author_name', 'author_email', 'committer_fullname', 'committer_name', 'committer_email', 'metadata', 'synthetic', ] revision_get_cols = revision_add_cols + [ 'author_id', 'committer_id', 'parents'] def origin_visit_add(self, origin, ts, cur=None): """Add a new origin_visit for origin origin at timestamp ts with status 'ongoing'. Args: origin: origin concerned by the visit ts: the date of the visit Returns: The new visit index step for that origin """ cur = self._cursor(cur) self._cursor(cur).execute('SELECT swh_origin_visit_add(%s, %s)', (origin, ts)) return cur.fetchone()[0] def origin_visit_update(self, origin, visit_id, status, metadata, cur=None): """Update origin_visit's status.""" cur = self._cursor(cur) update = """UPDATE origin_visit SET status=%s, metadata=%s WHERE origin=%s AND visit=%s""" cur.execute(update, (status, jsonize(metadata), origin, visit_id)) - origin_visit_get_cols = [ - 'origin', 'visit', 'date', 'status', 'metadata', - ] + origin_visit_get_cols = ['origin', 'visit', 'date', 'status', 'metadata'] - def origin_visit_get(self, origin_id, cur=None): + def origin_visit_get_all(self, origin_id, cur=None): """Retrieve all visits for origin with id origin_id. Args: origin_id: The occurrence's origin Yields: The occurrence's history visits """ cur = self._cursor(cur) query = """\ SELECT %s FROM origin_visit WHERE origin=%%s""" % (', '.join(self.origin_visit_get_cols)) cur.execute(query, (origin_id, )) yield from cursor_to_bytes(cur) - origin_visit_get_by_cols = ['origin', 'branch', 'target', 'target_type'] - - def origin_visit_get_by(self, origin_id, visit_id, cur=None): - """Retrieve all visits for origin with id origin_id. + def origin_visit_get(self, origin_id, visit_id, cur=None): + """Retrieve information on visit visit_id of origin origin_id. Args: origin_id: the origin concerned visit_id: The visit step for that origin - Yields: - The occurrence's history visits + Returns: + The origin_visit information """ cur = self._cursor(cur) query = """\ SELECT %s - FROM swh_occurrence_by_origin_visit(%%s, %%s) - """ % (', '.join(self.origin_visit_get_by_cols)) + FROM origin_visit + WHERE origin = %%s AND visit = %%s + """ % (', '.join(self.origin_visit_get_cols)) cur.execute(query, (origin_id, visit_id)) - yield from cursor_to_bytes(cur) + r = cur.fetchall() + if not r: + return None + return line_to_bytes(r[0]) - origin_visit_info_cols = ['origin', 'visit', 'date', 'status', 'metadata'] + occurrence_cols = ['origin', 'branch', 'target', 'target_type'] - def origin_visit_info(self, origin_id, visit_id, cur=None): - """Retrieve information on visit visit_id of origin origin_id. + def occurrence_by_origin_visit(self, origin_id, visit_id, cur=None): + """Retrieve all occurrences for a particular origin_visit. Args: origin_id: the origin concerned visit_id: The visit step for that origin - Returns: - The origin_visit information + Yields: + The occurrence's history visits """ cur = self._cursor(cur) query = """\ SELECT %s - FROM origin_visit - WHERE origin = %%s AND visit = %%s - """ % (', '.join(self.origin_visit_info_cols)) + FROM swh_occurrence_by_origin_visit(%%s, %%s) + """ % (', '.join(self.occurrence_cols)) cur.execute(query, (origin_id, visit_id)) - r = cur.fetchall() - if not r: - return None - return line_to_bytes(r[0]) + yield from cursor_to_bytes(cur) def revision_get_from_temp(self, cur=None): cur = self._cursor(cur) query = 'SELECT %s FROM swh_revision_get()' % ( ', '.join(self.revision_get_cols)) cur.execute(query) yield from cursor_to_bytes(cur) def revision_log(self, root_revisions, limit=None, cur=None): cur = self._cursor(cur) query = """SELECT %s FROM swh_revision_log(%%s, %%s) """ % ', '.join(self.revision_get_cols) cur.execute(query, (root_revisions, limit)) yield from cursor_to_bytes(cur) revision_shortlog_cols = ['id', 'parents'] def revision_shortlog(self, root_revisions, limit=None, cur=None): cur = self._cursor(cur) query = """SELECT %s FROM swh_revision_list(%%s, %%s) """ % ', '.join(self.revision_shortlog_cols) cur.execute(query, (root_revisions, limit)) yield from cursor_to_bytes(cur) def cache_content_revision_add(self, revision_id, cur=None): """Populate the revision cache for the revision revision_id if not already cached.""" cur = self._cursor(cur) cur.execute('SELECT swh_cache_content_revision_add(%s)', (revision_id,)) def cache_revision_origin_add(self, origin, visit, cur=None): """Populate the content provenance information cache for the given (origin, visit) couple.""" cur = self._cursor(cur) cur.execute('SELECT * FROM swh_cache_revision_origin_add(%s, %s)', (origin, visit)) yield from cursor_to_bytes(cur) def release_missing_from_temp(self, cur=None): cur = self._cursor(cur) cur.execute('SELECT id FROM swh_release_missing() as r(id)') yield from cursor_to_bytes(cur) object_find_by_sha1_git_cols = ['sha1_git', 'type', 'id', 'object_id'] def object_find_by_sha1_git(self, ids, cur=None): cur = self._cursor(cur) self.store_tmp_bytea(ids, cur) query = 'select %s from swh_object_find_by_sha1_git()' % ( ', '.join(self.object_find_by_sha1_git_cols) ) cur.execute(query) yield from cursor_to_bytes(cur) def stat_counters(self, cur=None): cur = self._cursor(cur) cur.execute('SELECT * FROM swh_stat_counters()') yield from cur fetch_history_cols = ['origin', 'date', 'status', 'result', 'stdout', 'stderr', 'duration'] def create_fetch_history(self, fetch_history, cur=None): """Create a fetch_history entry with the data in fetch_history""" cur = self._cursor(cur) query = '''INSERT INTO fetch_history (%s) VALUES (%s) RETURNING id''' % ( ','.join(self.fetch_history_cols), ','.join(['%s'] * len(self.fetch_history_cols)) ) cur.execute(query, [fetch_history.get(col) for col in self.fetch_history_cols]) return cur.fetchone()[0] def get_fetch_history(self, fetch_history_id, cur=None): """Get a fetch_history entry with the given id""" cur = self._cursor(cur) query = '''SELECT %s FROM fetch_history WHERE id=%%s''' % ( ', '.join(self.fetch_history_cols), ) cur.execute(query, (fetch_history_id,)) data = cur.fetchone() if not data: return None ret = {'id': fetch_history_id} for i, col in enumerate(self.fetch_history_cols): ret[col] = data[i] return ret def update_fetch_history(self, fetch_history, cur=None): """Update the fetch_history entry from the data in fetch_history""" cur = self._cursor(cur) query = '''UPDATE fetch_history SET %s WHERE id=%%s''' % ( ','.join('%s=%%s' % col for col in self.fetch_history_cols) ) cur.execute(query, [jsonize(fetch_history.get(col)) for col in self.fetch_history_cols + ['id']]) base_entity_cols = ['uuid', 'parent', 'name', 'type', 'description', 'homepage', 'active', 'generated', 'lister_metadata', 'metadata'] entity_cols = base_entity_cols + ['last_seen', 'last_id'] entity_history_cols = base_entity_cols + ['id', 'validity'] def origin_add(self, type, url, cur=None): """Insert a new origin and return the new identifier.""" insert = """INSERT INTO origin (type, url) values (%s, %s) RETURNING id""" cur.execute(insert, (type, url)) return cur.fetchone()[0] def origin_get_with(self, type, url, cur=None): """Retrieve the origin id from its type and url if found.""" cur = self._cursor(cur) query = """SELECT id, type, url, lister, project FROM origin WHERE type=%s AND url=%s""" cur.execute(query, (type, url)) data = cur.fetchone() if data: return line_to_bytes(data) return None def origin_get(self, id, cur=None): """Retrieve the origin per its identifier. """ cur = self._cursor(cur) query = "SELECT id, type, url, lister, project FROM origin WHERE id=%s" cur.execute(query, (id,)) data = cur.fetchone() if data: return line_to_bytes(data) return None person_cols = ['fullname', 'name', 'email'] person_get_cols = person_cols + ['id'] def person_add(self, person, cur=None): """Add a person identified by its name and email. Returns: The new person's id """ cur = self._cursor(cur) query_new_person = '''\ INSERT INTO person(%s) VALUES (%s) RETURNING id''' % ( ', '.join(self.person_cols), ', '.join('%s' for i in range(len(self.person_cols))) ) cur.execute(query_new_person, [person[col] for col in self.person_cols]) return cur.fetchone()[0] def person_get(self, ids, cur=None): """Retrieve the persons identified by the list of ids. """ cur = self._cursor(cur) query = """SELECT %s FROM person WHERE id IN %%s""" % ', '.join(self.person_get_cols) cur.execute(query, (tuple(ids),)) yield from cursor_to_bytes(cur) release_add_cols = [ 'id', 'target', 'target_type', 'date', 'date_offset', 'date_neg_utc_offset', 'name', 'comment', 'synthetic', 'author_fullname', 'author_name', 'author_email', ] release_get_cols = release_add_cols + ['author_id'] def release_get_from_temp(self, cur=None): cur = self._cursor(cur) query = ''' SELECT %s FROM swh_release_get() ''' % ', '.join(self.release_get_cols) cur.execute(query) yield from cursor_to_bytes(cur) def release_get_by(self, origin_id, limit=None, cur=None): """Retrieve a release by occurrence criterion (only origin right now) Args: - origin_id: The origin to look for. """ cur = self._cursor(cur) query = """ SELECT %s FROM swh_release_get_by(%%s) LIMIT %%s """ % ', '.join(self.release_get_cols) cur.execute(query, (origin_id, limit)) yield from cursor_to_bytes(cur) def revision_get_by(self, origin_id, branch_name, datetime, limit=None, cur=None): """Retrieve a revision by occurrence criterion. Args: - origin_id: The origin to look for - branch_name: the branch name to look for - datetime: the lower bound of timerange to look for. - limit: limit number of results to return The upper bound being now. """ cur = self._cursor(cur) if branch_name and isinstance(branch_name, str): branch_name = branch_name.encode('utf-8') query = ''' SELECT %s FROM swh_revision_get_by(%%s, %%s, %%s) LIMIT %%s ''' % ', '.join(self.revision_get_cols) cur.execute(query, (origin_id, branch_name, datetime, limit)) yield from cursor_to_bytes(cur) def directory_entry_get_by_path(self, directory, paths, cur=None): """Retrieve a directory entry by path. """ cur = self._cursor(cur) cur.execute("""SELECT dir_id, type, target, name, perms, status, sha1, sha1_git, sha256 FROM swh_find_directory_entry_by_path(%s, %s)""", (directory, paths)) data = cur.fetchone() if set(data) == {None}: return None return line_to_bytes(data) def entity_get(self, uuid, cur=None): """Retrieve the entity and its parent hierarchy chain per uuid. """ cur = self._cursor(cur) cur.execute("""SELECT %s FROM swh_entity_get(%%s)""" % ( ', '.join(self.entity_cols)), (uuid, )) yield from cursor_to_bytes(cur) def entity_get_one(self, uuid, cur=None): """Retrieve a single entity given its uuid. """ cur = self._cursor(cur) cur.execute("""SELECT %s FROM entity WHERE uuid = %%s""" % ( ', '.join(self.entity_cols)), (uuid, )) data = cur.fetchone() if not data: return None return line_to_bytes(data) def archive_ls(self, cur=None): """ Get all the archives registered on the server. Yields: a tuple (server_id, server_url) for each archive server. """ cur = self._cursor(cur) cur.execute("""SELECT id, url FROM archive """) yield from cursor_to_bytes(cur) def content_archive_get(self, content_id, cur=None): """ Get the archival status of a content in a specific server. Retrieve from the database the archival status of the given content in the given archive server. Args: content_id: the sha1 of the content. Yields: A tuple (content_id, present_copies, ongoing_copies), where ongoing_copies is a dict mapping copy to mtime. """ query = """SELECT content_id, array( SELECT key FROM jsonb_each(copies) WHERE value->>'status' = 'present' ORDER BY key ) AS present, array( SELECT key FROM jsonb_each(copies) WHERE value->>'status' = 'ongoing' ORDER BY key ) AS ongoing, array( SELECT value->'mtime' FROM jsonb_each(copies) WHERE value->>'status' = 'ongoing' ORDER BY key ) AS ongoing_mtime FROM content_archive WHERE content_id = %s ORDER BY content_id """ cur = self._cursor(cur) cur.execute(query, (content_id,)) content_id, present, ongoing, mtimes = cur.fetchone() return (content_id, present, dict(zip(ongoing, mtimes))) def content_archive_get_copies(self, last_content=None, limit=1000, cur=None): """Get the list of copies for `limit` contents starting after `last_content`. Args: last_content: sha1 of the last content retrieved. May be None to start at the beginning. limit: number of contents to retrieve. Can be None to retrieve all objects (will be slow). Yields: A tuple (content_id, present_copies, ongoing_copies), where ongoing_copies is a dict mapping copy to mtime. """ query = """SELECT content_id, array( SELECT key FROM jsonb_each(copies) WHERE value->>'status' = 'present' ORDER BY key ) AS present, array( SELECT key FROM jsonb_each(copies) WHERE value->>'status' = 'ongoing' ORDER BY key ) AS ongoing, array( SELECT value->'mtime' FROM jsonb_each(copies) WHERE value->>'status' = 'ongoing' ORDER BY key ) AS ongoing_mtime FROM content_archive WHERE content_id > %s ORDER BY content_id LIMIT %s """ if last_content is None: last_content = b'' cur = self._cursor(cur) cur.execute(query, (last_content, limit)) for content_id, present, ongoing, mtimes in cursor_to_bytes(cur): yield (content_id, present, dict(zip(ongoing, mtimes))) def content_archive_get_unarchived_copies( self, retention_policy, last_content=None, limit=1000, cur=None): """ Get the list of copies for `limit` contents starting after `last_content`. Yields only copies with number of present smaller than `retention policy`. Args: last_content: sha1 of the last content retrieved. May be None to start at the beginning. retention_policy: number of presentcopies required. limit: number of contents to retrieve. Can be None to retrieve all objects (will be slow). Yields: A tuple (content_id, present_copies, ongoing_copies), where ongoing_copies is a dict mapping copy to mtime. """ query = """SELECT content_id, array( SELECT key FROM jsonb_each(copies) WHERE value->>'status' = 'present' ORDER BY key ) AS present, array( SELECT key FROM jsonb_each(copies) WHERE value->>'status' = 'ongoing' ORDER BY key ) AS ongoing, array( SELECT value->'mtime' FROM jsonb_each(copies) WHERE value->>'status' = 'ongoing' ORDER BY key ) AS ongoing_mtime FROM content_archive WHERE content_id > %s AND num_present < %s ORDER BY content_id LIMIT %s """ if last_content is None: last_content = b'' cur = self._cursor(cur) cur.execute(query, (last_content, retention_policy, limit)) for content_id, present, ongoing, mtimes in cursor_to_bytes(cur): yield (content_id, present, dict(zip(ongoing, mtimes))) def content_archive_update(self, content_id, archive_id, new_status=None, cur=None): """ Update the status of an archive content and set its mtime to Change the mtime of an archived content for the given archive and set it's mtime to the current time. Args: content_id (str): content sha1 archive_id (str): name of the archive new_status (str): one of 'missing', 'present' or 'ongoing'. this status will replace the previous one. If not given, the function only change the mtime of the content for the given archive. """ if new_status is not None: query = """UPDATE content_archive SET copies=jsonb_set( copies, '{%s}', '{"status":"%s", "mtime":%d}' ) WHERE content_id='%s' """ % (archive_id, new_status, int(time.time()), content_id) else: query = """ UPDATE content_archive SET copies=jsonb_set(copies, '{%s,mtime}', '%d') WHERE content_id='%s' """ % (archive_id, int(time.time())) cur = self._cursor(cur) cur.execute(query) diff --git a/swh/storage/storage.py b/swh/storage/storage.py index 6d21b53..adc6667 100644 --- a/swh/storage/storage.py +++ b/swh/storage/storage.py @@ -1,1187 +1,1189 @@ # Copyright (C) 2015-2016 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 collections import defaultdict import datetime import itertools import dateutil.parser import psycopg2 from . import converters from .common import db_transaction_generator, db_transaction from .db import Db from .exc import StorageDBError from swh.core.hashutil import ALGORITHMS from swh.objstorage import PathSlicingObjStorage from swh.objstorage.exc import ObjNotFoundError # Max block size of contents to return BULK_BLOCK_CONTENT_LEN_MAX = 10000 class Storage(): """SWH storage proxy, encompassing DB and object storage """ def __init__(self, db_conn, obj_root): """ Args: db_conn: either a libpq connection string, or a psycopg2 connection obj_root: path to the root of the object storage """ try: if isinstance(db_conn, psycopg2.extensions.connection): self.db = Db(db_conn) else: self.db = Db.connect(db_conn) except psycopg2.OperationalError as e: raise StorageDBError(e) # TODO this needs to be configured self.objstorage = PathSlicingObjStorage(obj_root, slicing='0:2/2:4/4:6') def content_add(self, content): """Add content blobs to the storage Note: in case of DB errors, objects might have already been added to the object storage and will not be removed. Since addition to the object storage is idempotent, that should not be a problem. Args: content: iterable of dictionaries representing individual pieces of content to add. 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.core.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 """ db = self.db content_by_status = defaultdict(list) for d in content: if 'status' not in d: d['status'] = 'visible' if 'length' not in d: d['length'] = -1 content_by_status[d['status']].append(d) content_with_data = content_by_status['visible'] content_without_data = content_by_status['absent'] missing_content = set(self.content_missing(content_with_data)) missing_skipped = set( sha1_git for sha1, sha1_git, sha256 in self.skipped_content_missing(content_without_data)) with db.transaction() as cur: if missing_content: # create temporary table for metadata injection db.mktemp('content', cur) def add_to_objstorage(cont): self.objstorage.add(cont['data'], obj_id=cont['sha1']) content_filtered = (cont for cont in content_with_data if cont['sha1'] in missing_content) db.copy_to(content_filtered, 'tmp_content', ['sha1', 'sha1_git', 'sha256', 'length', 'status'], cur, item_cb=add_to_objstorage) # move metadata in place db.content_add_from_temp(cur) if missing_skipped: missing_filtered = (cont for cont in content_without_data if cont['sha1_git'] in missing_skipped) db.mktemp('skipped_content', cur) db.copy_to(missing_filtered, 'tmp_skipped_content', ['sha1', 'sha1_git', 'sha256', 'length', 'reason', 'status', 'origin'], cur) # move metadata in place db.skipped_content_add_from_temp(cur) def content_get(self, content): """Retrieve in bulk contents and their data. Args: content: iterables of sha1 Returns: Generates streams of contents as dict with their raw data: - sha1: sha1's content - data: bytes data of the content Raises: ValueError in case of too much contents are required. cf. BULK_BLOCK_CONTENT_LEN_MAX """ # FIXME: Improve on server module to slice the result if len(content) > BULK_BLOCK_CONTENT_LEN_MAX: raise ValueError( "Send at maximum %s contents." % BULK_BLOCK_CONTENT_LEN_MAX) for obj_id in content: try: data = self.objstorage.get(obj_id) except ObjNotFoundError: yield None continue yield {'sha1': obj_id, 'data': data} @db_transaction_generator def content_get_metadata(self, content, cur=None): """Retrieve content metadata in bulk Args: content: iterable of content identifiers (sha1) Returns: an iterable with content metadata corresponding to the given ids """ db = self.db db.store_tmp_bytea(content, cur) for content_metadata in db.content_get_metadata_from_temp(cur): yield dict(zip(db.content_get_metadata_keys, content_metadata)) @db_transaction_generator def content_missing(self, content, key_hash='sha1', cur=None): """List content missing from storage Args: content: iterable of dictionaries containing one key for each checksum algorithm in swh.core.hashutil.ALGORITHMS, mapped to the corresponding checksum, and a length key mapped to the content length. key_hash: the name of the hash used as key (default: 'sha1') Returns: an iterable of `key_hash`es missing from the storage Raises: TODO: an exception when we get a hash collision. """ db = self.db keys = ['sha1', 'sha1_git', 'sha256'] if key_hash not in keys: raise ValueError("key_hash should be one of %s" % keys) key_hash_idx = keys.index(key_hash) # Create temporary table for metadata injection db.mktemp('content', cur) db.copy_to(content, 'tmp_content', keys + ['length'], cur) for obj in db.content_missing_from_temp(cur): yield obj[key_hash_idx] @db_transaction_generator def content_missing_per_sha1(self, contents, cur=None): """List content missing from storage based only on sha1. Args: contents: Iterable of sha1 to check for absence. Returns: an iterable of `sha1`s missing from the storage. Raises: TODO: an exception when we get a hash collision. """ db = self.db db.store_tmp_bytea(contents, cur) for obj in db.content_missing_per_sha1_from_temp(cur): yield obj[0] @db_transaction_generator def skipped_content_missing(self, content, cur=None): """List skipped_content missing from storage Args: content: iterable of dictionaries containing the data for each checksum algorithm. Returns: an iterable of signatures missing from the storage """ keys = ['sha1', 'sha1_git', 'sha256'] db = self.db db.mktemp('skipped_content', cur) db.copy_to(content, 'tmp_skipped_content', keys + ['length', 'reason'], cur) yield from db.skipped_content_missing_from_temp(cur) @db_transaction def content_find(self, content, cur=None): """Find a content hash in db. Args: content: a dictionary representing one content hash, mapping checksum algorithm names (see swh.core.hashutil.ALGORITHMS) to checksum values Returns: a triplet (sha1, sha1_git, sha256) if the content exist or None otherwise. Raises: ValueError in case the key of the dictionary is not sha1, sha1_git nor sha256. """ db = self.db if not set(content).intersection(ALGORITHMS): raise ValueError('content keys must contain at least one of: ' 'sha1, sha1_git, sha256') c = db.content_find(sha1=content.get('sha1'), sha1_git=content.get('sha1_git'), sha256=content.get('sha256'), cur=cur) if c: keys = ['sha1', 'sha1_git', 'sha256', 'length', 'ctime', 'status'] return dict(zip(keys, c)) return None @db_transaction_generator def content_find_provenance(self, content, cur=None): """Find content's provenance information. Args: content: a dictionary entry representing one content hash. The dictionary key is one of swh.core.hashutil.ALGORITHMS. The value mapped to the corresponding checksum. Yields: The provenance information on content. """ db = self.db c = self.content_find(content) if not c: return [] sha1_git = c['sha1_git'] for provenance in db.content_find_provenance(sha1_git, cur=cur): yield dict(zip(db.provenance_cols, provenance)) def directory_add(self, directories): """Add directories to the storage Args: directories: 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 """ dirs = set() dir_entries = { 'file': defaultdict(list), 'dir': defaultdict(list), 'rev': defaultdict(list), } for cur_dir in directories: dir_id = cur_dir['id'] dirs.add(dir_id) for src_entry in cur_dir['entries']: entry = src_entry.copy() entry['dir_id'] = dir_id dir_entries[entry['type']][dir_id].append(entry) dirs_missing = set(self.directory_missing(dirs)) if not dirs_missing: return db = self.db with db.transaction() as cur: # Copy directory ids dirs_missing_dict = ({'id': dir} for dir in dirs_missing) db.mktemp('directory', cur) db.copy_to(dirs_missing_dict, 'tmp_directory', ['id'], cur) # Copy entries for entry_type, entry_list in dir_entries.items(): entries = itertools.chain.from_iterable( entries_for_dir for dir_id, entries_for_dir in entry_list.items() if dir_id in dirs_missing) db.mktemp_dir_entry(entry_type) db.copy_to( entries, 'tmp_directory_entry_%s' % entry_type, ['target', 'name', 'perms', 'dir_id'], cur, ) # Do the final copy db.directory_add_from_temp(cur) @db_transaction_generator def directory_missing(self, directories, cur): """List directories missing from storage Args: an iterable of directory ids Returns: a list of missing directory ids """ db = self.db # Create temporary table for metadata injection db.mktemp('directory', cur) directories_dicts = ({'id': dir} for dir in directories) db.copy_to(directories_dicts, 'tmp_directory', ['id'], cur) for obj in db.directory_missing_from_temp(cur): yield obj[0] @db_transaction_generator def directory_get(self, directories, cur=None): """Get information on directories. Args: - directories: an iterable of directory ids Returns: List of directories as dict with keys and associated values. """ db = self.db keys = ('id', 'dir_entries', 'file_entries', 'rev_entries') db.mktemp('directory', cur) db.copy_to(({'id': dir_id} for dir_id in directories), 'tmp_directory', ['id'], cur) dirs = db.directory_get_from_temp(cur) for line in dirs: yield dict(zip(keys, line)) @db_transaction_generator def directory_ls(self, directory, recursive=False, cur=None): """Get entries for one directory. Args: - directory: the directory to list entries from. - recursive: if flag on, this list recursively from this directory. Returns: List of entries for such directory. """ db = self.db if recursive: res_gen = db.directory_walk(directory) else: res_gen = db.directory_walk_one(directory) for line in res_gen: yield dict(zip(db.directory_ls_cols, line)) @db_transaction def cache_content_revision_add(self, revision, cur=None): """Cache the current revision's current targeted arborescence directory. If the revision has already been cached, it just does nothing. Args: - revision: the revision's identifier to cache Returns: None """ self.db.cache_content_revision_add(revision) @db_transaction_generator def cache_revision_origin_add(self, origin, visit, cur=None): """Cache the list of revisions the given visit added to the origin. Args: - origin: the id of the origin - visit: the id of the visit Returns: The list of new revisions """ for (revision,) in self.db.cache_revision_origin_add(origin, visit): yield revision @db_transaction def directory_entry_get_by_path(self, directory, paths, cur=None): """Get the directory entry (either file or dir) from directory with path. Args: - directory: sha1 of the top level directory - paths: path to lookup from the top level directory. From left (top) to right (bottom). Returns: The corresponding directory entry if found, None otherwise. """ db = self.db keys = ('dir_id', 'type', 'target', 'name', 'perms', 'status', 'sha1', 'sha1_git', 'sha256') res = db.directory_entry_get_by_path(directory, paths, cur) if res: return dict(zip(keys, res)) def revision_add(self, revisions): """Add revisions to the storage Args: revisions: 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 (datetime.DateTime): date the revision was written - date_offset (int): offset from UTC in minutes the revision was written - date_neg_utc_offset (boolean): whether a null date_offset represents a negative UTC offset - committer_date (datetime.DateTime): date the revision got added to the origin - committer_date_offset (int): offset from UTC in minutes the revision was added to the origin - committer_date_neg_utc_offset (boolean): whether a null committer_date_offset represents a negative UTC offset - 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_name (bytes): the name of the revision author - author_email (bytes): the email of the revision author - committer_name (bytes): the name of the revision committer - committer_email (bytes): the email of the revision committer - metadata (jsonb): extra information as dictionary - synthetic (bool): revision's nature (tarball, directory creates synthetic revision) - parents (list of sha1_git): the parents of this revision """ db = self.db revisions_missing = set(self.revision_missing( set(revision['id'] for revision in revisions))) if not revisions_missing: return with db.transaction() as cur: db.mktemp_revision(cur) revisions_filtered = ( converters.revision_to_db(revision) for revision in revisions if revision['id'] in revisions_missing) parents_filtered = [] db.copy_to( revisions_filtered, 'tmp_revision', db.revision_add_cols, cur, lambda rev: parents_filtered.extend(rev['parents'])) db.revision_add_from_temp(cur) db.copy_to(parents_filtered, 'revision_history', ['id', 'parent_id', 'parent_rank'], cur) @db_transaction_generator def revision_missing(self, revisions, cur=None): """List revisions missing from storage Args: an iterable of revision ids Returns: a list of missing revision ids """ db = self.db db.store_tmp_bytea(revisions, cur) for obj in db.revision_missing_from_temp(cur): yield obj[0] @db_transaction_generator def revision_get(self, revisions, cur): """Get all revisions from storage Args: an iterable of revision ids Returns: an iterable of revisions as dictionaries (or None if the revision doesn't exist) """ db = self.db db.store_tmp_bytea(revisions, cur) for line in self.db.revision_get_from_temp(cur): data = converters.db_to_revision( dict(zip(db.revision_get_cols, line)) ) if not data['type']: yield None continue yield data @db_transaction_generator def revision_log(self, revisions, limit=None, cur=None): """Fetch revision entry from the given root revisions. Args: - revisions: array of root revision to lookup - limit: limitation on the output result. Default to null. Yields: List of revision log from such revisions root. """ db = self.db for line in db.revision_log(revisions, limit, cur): data = converters.db_to_revision( dict(zip(db.revision_get_cols, line)) ) if not data['type']: yield None continue yield data @db_transaction_generator def revision_shortlog(self, revisions, limit=None, cur=None): """Fetch the shortlog for the given revisions Args: revisions: list of root revisions to lookup limit: depth limitation for the output Yields: a list of (id, parents) tuples. """ db = self.db yield from db.revision_shortlog(revisions, limit, cur) @db_transaction_generator def revision_log_by(self, origin_id, branch_name=None, timestamp=None, limit=None, cur=None): """Fetch revision entry from the actual origin_id's latest revision. Args: - origin_id: the origin id from which deriving the revision - branch_name: (optional) occurrence's branch name - timestamp: (optional) occurrence's time - limit: (optional) depth limitation for the output. Default to None. Yields: The revision log starting from the revision derived from the (origin, branch_name, timestamp) combination if any. Returns the [] if no revision matching this combination is found. """ db = self.db # Retrieve the revision by criterion revisions = list(db.revision_get_by( origin_id, branch_name, timestamp, limit=1)) if not revisions: return None revision_id = revisions[0][0] # otherwise, retrieve the revision log from that revision yield from self.revision_log([revision_id], limit) def release_add(self, releases): """Add releases to the storage Args: releases: 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 (datetime.DateTime): the date the release was made - date_offset (int): offset from UTC in minutes the release was made - date_neg_utc_offset (boolean): whether a null date_offset represents a negative UTC offset - name (bytes): the name of the release - comment (bytes): the comment associated with the release - author_name (bytes): the name of the release author - author_email (bytes): the email of the release author """ db = self.db release_ids = set(release['id'] for release in releases) releases_missing = set(self.release_missing(release_ids)) if not releases_missing: return with db.transaction() as cur: db.mktemp_release(cur) releases_filtered = ( converters.release_to_db(release) for release in releases if release['id'] in releases_missing ) db.copy_to(releases_filtered, 'tmp_release', db.release_add_cols, cur) db.release_add_from_temp(cur) @db_transaction_generator def release_missing(self, releases, cur=None): """List releases missing from storage Args: an iterable of release ids Returns: a list of missing release ids """ db = self.db # Create temporary table for metadata injection db.store_tmp_bytea(releases, cur) for obj in db.release_missing_from_temp(cur): yield obj[0] @db_transaction_generator def release_get(self, releases, cur=None): """Given a list of sha1, return the releases's information Args: releases: list of sha1s Returns: Generates the list of releases dict with the following keys: - id: origin's id - revision: origin's type - url: origin's url - lister: lister's uuid - project: project's uuid (FIXME, retrieve this information) Raises: ValueError if the keys does not match (url and type) nor id. """ db = self.db # Create temporary table for metadata injection db.store_tmp_bytea(releases, cur) for release in db.release_get_from_temp(cur): yield converters.db_to_release( dict(zip(db.release_get_cols, release)) ) @db_transaction def occurrence_add(self, occurrences, cur=None): """Add occurrences to the storage Args: occurrences: iterable of dictionaries representing the individual occurrences to add. Each dict has the following keys: - origin (int): id of the origin corresponding to the occurrence - branch (str): the reference name of the occurrence - target (sha1_git): the id of the object pointed to by the occurrence - target_type (str): the type of object pointed to by the occurrence """ db = self.db db.mktemp_occurrence_history(cur) db.copy_to(occurrences, 'tmp_occurrence_history', ['origin', 'branch', 'target', 'target_type', 'visit'], cur) db.occurrence_history_add_from_temp(cur) @db_transaction_generator def occurrence_get(self, origin_id, cur=None): """Retrieve occurrence information per origin_id. Args: origin_id: The occurrence's origin. Yields: List of occurrences matching criterion. """ db = self.db for line in db.occurrence_get(origin_id, cur): yield { 'origin': line[0], 'branch': line[1], 'target': line[2], 'target_type': line[3], } @db_transaction def origin_visit_add(self, origin, ts, cur=None): """Add an origin_visit for the origin at ts with status 'ongoing'. Args: origin: Visited Origin id ts: timestamp of such visit Returns: Dict with keys origin and visit where: - origin: origin identifier - visit: the visit identifier for the new visit occurrence - ts (datetime.DateTime): the visit date """ if isinstance(ts, str): ts = dateutil.parser.parse(ts) return { 'origin': origin, 'visit': self.db.origin_visit_add(origin, ts, cur) } @db_transaction def origin_visit_update(self, origin, visit_id, status, metadata=None, cur=None): """Update an origin_visit's status. Args: origin: Visited Origin id visit_id: Visit's id status: Visit's new status metadata: Data associated to the visit Returns: None """ return self.db.origin_visit_update(origin, visit_id, status, metadata, cur) @db_transaction_generator def origin_visit_get(self, origin, cur=None): """Retrieve all the origin's visit's information. Args: origin: The occurrence's origin (identifier). Yields: List of visits. """ db = self.db - for line in db.origin_visit_get(origin, cur): + for line in db.origin_visit_get_all(origin, cur): data = dict(zip(self.db.origin_visit_get_cols, line)) yield data @db_transaction def origin_visit_get_by(self, origin, visit, cur=None): """Retrieve origin visit's information. Args: origin: The occurrence's origin (identifier). Returns: The information on that particular (origin, visit) """ db = self.db - ori_visit = db.origin_visit_info(origin, visit, cur) + ori_visit = db.origin_visit_get(origin, visit, cur) if not ori_visit: return None - ori_visit = dict(zip(self.db.origin_visit_info_cols, ori_visit)) + ori_visit = dict(zip(self.db.origin_visit_get_cols, ori_visit)) occs = {} - - for _, branch_name, target, target_type in self.db.origin_visit_get_by( - origin, visit): - occs[branch_name] = {'target': target, 'target_type': target_type} + for occ in db.occurrence_by_origin_visit(origin, visit): + _, branch_name, target, target_type = occ + occs[branch_name] = { + 'target': target, + 'target_type': target_type + } ori_visit.update({ 'occurrences': occs }) return ori_visit @db_transaction_generator def revision_get_by(self, origin_id, branch_name=None, timestamp=None, limit=None, cur=None): """Given an origin_id, retrieve occurrences' list per given criterions. Args: origin_id: The origin to filter on. branch_name: (optional) branch name. timestamp: (optional) time. limit: (optional) limit Yields: List of occurrences matching the criterions or None if nothing is found. """ for line in self.db.revision_get_by(origin_id, branch_name, timestamp, limit=limit, cur=cur): data = converters.db_to_revision( dict(zip(self.db.revision_get_cols, line)) ) if not data['type']: yield None continue yield data def release_get_by(self, origin_id, limit=None): """Given an origin id, return all the tag objects pointing to heads of origin_id. Args: origin_id: the origin to filter on. limit: None by default Yields: List of releases matching the criterions or None if nothing is found. """ for line in self.db.release_get_by(origin_id, limit=limit): data = converters.db_to_release( dict(zip(self.db.release_get_cols, line)) ) yield data @db_transaction def object_find_by_sha1_git(self, ids, cur=None): """Return the objects found with the given ids. Args: ids: a generator of sha1_gits Returns: a dict mapping the id to the list of objects found. Each object found is itself a dict with keys: sha1_git: the input id type: the type of object found id: the id of the object found object_id: the numeric id of the object found. """ db = self.db ret = {id: [] for id in ids} for retval in db.object_find_by_sha1_git(ids): if retval[1]: ret[retval[0]].append(dict(zip(db.object_find_by_sha1_git_cols, retval))) return ret @db_transaction def origin_get(self, origin, cur=None): """Return the origin either identified by its id or its tuple (type, url). Args: origin: dictionary representing the individual origin to find. This dict has either the keys type and url: - type (FIXME: enum TBD): the origin type ('git', 'wget', ...) - url (bytes): the url the origin points to either the id: - id: the origin id Returns: the origin dict with the keys: - id: origin's id - type: origin's type - url: origin's url - lister: lister's uuid - project: project's uuid (FIXME, retrieve this information) Raises: ValueError if the keys does not match (url and type) nor id. """ db = self.db keys = ['id', 'type', 'url', 'lister', 'project'] origin_id = origin.get('id') if origin_id: # check lookup per id first ori = db.origin_get(origin_id, cur) elif 'type' in origin and 'url' in origin: # or lookup per type, url ori = db.origin_get_with(origin['type'], origin['url'], cur) else: # unsupported lookup raise ValueError('Origin must have either id or (type and url).') if ori: return dict(zip(keys, ori)) return None @db_transaction def _person_add(self, person, cur=None): """Add a person in storage. BEWARE: Internal function for now. Do not do anything fancy in case a person already exists. Please adapt code if more checks are needed. Args: person dictionary with keys name and email. Returns: Id of the new person. """ db = self.db return db.person_add(person) @db_transaction_generator def person_get(self, person, cur=None): """Return the persons identified by their ids. Args: person: array of ids. Returns: The array of persons corresponding of the ids. """ db = self.db for person in db.person_get(person): yield dict(zip(db.person_get_cols, person)) @db_transaction def origin_add_one(self, origin, cur=None): """Add origin to the storage Args: origin: dictionary representing the individual origin to add. This dict has the following keys: - type (FIXME: enum TBD): the origin type ('git', 'wget', ...) - url (bytes): the url the origin points to Returns: the id of the added origin, or of the identical one that already exists. """ db = self.db data = db.origin_get_with(origin['type'], origin['url'], cur) if data: return data[0] return db.origin_add(origin['type'], origin['url'], cur) @db_transaction def fetch_history_start(self, origin_id, cur=None): """Add an entry for origin origin_id in fetch_history. Returns the id of the added fetch_history entry """ fetch_history = { 'origin': origin_id, 'date': datetime.datetime.now(tz=datetime.timezone.utc), } return self.db.create_fetch_history(fetch_history, cur) @db_transaction def fetch_history_end(self, fetch_history_id, data, cur=None): """Close the fetch_history entry with id `fetch_history_id`, replacing its data with `data`. """ now = datetime.datetime.now(tz=datetime.timezone.utc) fetch_history = self.db.get_fetch_history(fetch_history_id, cur) if not fetch_history: raise ValueError('No fetch_history with id %d' % fetch_history_id) fetch_history['duration'] = now - fetch_history['date'] fetch_history.update(data) self.db.update_fetch_history(fetch_history, cur) @db_transaction def fetch_history_get(self, fetch_history_id, cur=None): """Get the fetch_history entry with id `fetch_history_id`. """ return self.db.get_fetch_history(fetch_history_id, cur) @db_transaction def entity_add(self, entities, cur=None): """Add the given entitites to the database (in entity_history). Args: - entities: iterable of dictionaries containing the following keys: - uuid (uuid): id of the entity - parent (uuid): id of the parent entity - name (str): name of the entity - type (str): type of entity (one of 'organization', 'group_of_entities', 'hosting', 'group_of_persons', 'person', 'project') - description (str, optional): description of the entity - homepage (str): url of the entity's homepage - active (bool): whether the entity is active - generated (bool): whether the entity was generated - lister_metadata (dict): lister-specific entity metadata - metadata (dict): other metadata for the entity - validity (datetime.DateTime array): timestamps at which we listed the entity. """ db = self.db cols = list(db.entity_history_cols) cols.remove('id') db.mktemp_entity_history() db.copy_to(entities, 'tmp_entity_history', cols, cur) db.entity_history_add_from_temp() @db_transaction_generator def entity_get_from_lister_metadata(self, entities, cur=None): """Fetch entities from the database, matching with the lister and associated metadata. Args: entities: iterable of dictionaries containing the lister metadata to look for. Useful keys are 'lister', 'type', 'id', ... Returns: A generator of fetched entities with all their attributes. If no match was found, the returned entity is None. """ db = self.db db.mktemp_entity_lister(cur) mapped_entities = [] for i, entity in enumerate(entities): mapped_entity = { 'id': i, 'lister_metadata': entity, } mapped_entities.append(mapped_entity) db.copy_to(mapped_entities, 'tmp_entity_lister', ['id', 'lister_metadata'], cur) cur.execute('''select id, %s from swh_entity_from_tmp_entity_lister() order by id''' % ','.join(db.entity_cols)) for id, *entity_vals in cur: fetched_entity = dict(zip(db.entity_cols, entity_vals)) if fetched_entity['uuid']: yield fetched_entity else: yield { 'uuid': None, 'lister_metadata': entities[i], } @db_transaction_generator def entity_get(self, uuid, cur=None): """Returns the list of entity per its uuid identifier and also its parent hierarchy. Args: uuid: entity's identifier Returns: List of entities starting with entity with uuid and the parent hierarchy from such entity. """ db = self.db for entity in db.entity_get(uuid, cur): yield dict(zip(db.entity_cols, entity)) @db_transaction def entity_get_one(self, uuid, cur=None): """Returns one entity using its uuid identifier. Args: uuid: entity's identifier Returns: the object corresponding to the given entity """ db = self.db entity = db.entity_get_one(uuid, cur) if entity: return dict(zip(db.entity_cols, entity)) else: return None @db_transaction def stat_counters(self, cur=None): """compute statistics about the number of tuples in various tables Returns: a dictionary mapping textual labels (e.g., content) to integer values (e.g., the number of tuples in table content) """ return {k: v for (k, v) in self.db.stat_counters()}