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Merge pull request #525 from matrix-org/erikj/select_many
Implement a `_simple_select_many_batch`
This commit is contained in:
Erik Johnston
commit
8431f62ebb
@ -629,6 +629,78 @@ class SQLBaseStore(object):
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return self.cursor_to_dict(txn)
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@defer.inlineCallbacks
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def _simple_select_many_batch(self, table, column, iterable, retcols,
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keyvalues={}, desc="_simple_select_many_batch",
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batch_size=100):
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"""Executes a SELECT query on the named table, which may return zero or
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more rows, returning the result as a list of dicts.
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Filters rows by if value of `column` is in `iterable`.
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Args:
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table : string giving the table name
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column : column name to test for inclusion against `iterable`
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iterable : list
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keyvalues : dict of column names and values to select the rows with
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retcols : list of strings giving the names of the columns to return
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"""
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results = []
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if not iterable:
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defer.returnValue(results)
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chunks = [iterable[i:i+batch_size] for i in xrange(0, len(iterable), batch_size)]
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for chunk in chunks:
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rows = yield self.runInteraction(
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desc,
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self._simple_select_many_txn,
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table, column, chunk, keyvalues, retcols
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)
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results.extend(rows)
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defer.returnValue(results)
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def _simple_select_many_txn(self, txn, table, column, iterable, keyvalues, retcols):
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"""Executes a SELECT query on the named table, which may return zero or
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more rows, returning the result as a list of dicts.
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Filters rows by if value of `column` is in `iterable`.
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Args:
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txn : Transaction object
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table : string giving the table name
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column : column name to test for inclusion against `iterable`
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iterable : list
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keyvalues : dict of column names and values to select the rows with
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retcols : list of strings giving the names of the columns to return
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"""
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if not iterable:
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return []
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sql = "SELECT %s FROM %s" % (", ".join(retcols), table)
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clauses = []
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values = []
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clauses.append(
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"%s IN (%s)" % (column, ",".join("?" for _ in iterable))
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)
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values.extend(iterable)
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for key, value in keyvalues.items():
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clauses.append("%s = ?" % (key,))
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values.append(value)
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if clauses:
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sql = "%s WHERE %s" % (
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sql,
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" AND ".join(clauses),
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)
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txn.execute(sql, values)
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return self.cursor_to_dict(txn)
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def _simple_update_one(self, table, keyvalues, updatevalues,
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desc="_simple_update_one"):
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"""Executes an UPDATE query on the named table, setting new values for
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@ -48,24 +48,25 @@ class PresenceStore(SQLBaseStore):
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desc="get_presence_state",
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)
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@cachedList(get_presence_state.cache, list_name="user_localparts")
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@cachedList(get_presence_state.cache, list_name="user_localparts",
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inlineCallbacks=True)
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def get_presence_states(self, user_localparts):
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def f(txn):
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results = {}
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for user_localpart in user_localparts:
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res = self._simple_select_one_txn(
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txn,
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table="presence",
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keyvalues={"user_id": user_localpart},
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retcols=["state", "status_msg", "mtime"],
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allow_none=True,
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)
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if res:
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results[user_localpart] = res
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rows = yield self._simple_select_many_batch(
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table="presence",
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column="user_id",
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iterable=user_localparts,
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retcols=("user_id", "state", "status_msg", "mtime",),
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desc="get_presence_states",
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)
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return results
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return self.runInteraction("get_presence_states", f)
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defer.returnValue({
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row["user_id"]: {
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"state": row["state"],
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"status_msg": row["status_msg"],
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"mtime": row["mtime"],
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}
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for row in rows
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})
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def set_presence_state(self, user_localpart, new_state):
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res = self._simple_update_one(
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@ -65,32 +65,20 @@ class PushRuleStore(SQLBaseStore):
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if not user_ids:
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defer.returnValue({})
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batch_size = 100
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def f(txn, user_ids_to_fetch):
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sql = (
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"SELECT pr.*"
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" FROM push_rules AS pr"
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" LEFT JOIN push_rules_enable AS pre"
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" ON pr.user_name = pre.user_name AND pr.rule_id = pre.rule_id"
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" WHERE pr.user_name"
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" IN (" + ",".join("?" for _ in user_ids_to_fetch) + ")"
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" AND (pre.enabled IS NULL OR pre.enabled = 1)"
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" ORDER BY pr.user_name, pr.priority_class DESC, pr.priority DESC"
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)
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txn.execute(sql, user_ids_to_fetch)
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return self.cursor_to_dict(txn)
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results = {}
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chunks = [user_ids[i:i+batch_size] for i in xrange(0, len(user_ids), batch_size)]
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for batch_user_ids in chunks:
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rows = yield self.runInteraction(
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"bulk_get_push_rules", f, batch_user_ids
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)
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rows = yield self._simple_select_many_batch(
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table="push_rules",
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column="user_name",
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iterable=user_ids,
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retcols=("*",),
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desc="bulk_get_push_rules",
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)
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for row in rows:
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results.setdefault(row['user_name'], []).append(row)
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rows.sort(key=lambda e: (-e["priority_class"], -e["priority"]))
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for row in rows:
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results.setdefault(row['user_name'], []).append(row)
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defer.returnValue(results)
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@defer.inlineCallbacks
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@ -98,28 +86,17 @@ class PushRuleStore(SQLBaseStore):
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if not user_ids:
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defer.returnValue({})
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batch_size = 100
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def f(txn, user_ids_to_fetch):
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sql = (
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"SELECT user_name, rule_id, enabled"
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" FROM push_rules_enable"
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" WHERE user_name"
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" IN (" + ",".join("?" for _ in user_ids_to_fetch) + ")"
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)
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txn.execute(sql, user_ids_to_fetch)
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return self.cursor_to_dict(txn)
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results = {}
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chunks = [user_ids[i:i+batch_size] for i in xrange(0, len(user_ids), batch_size)]
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for batch_user_ids in chunks:
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rows = yield self.runInteraction(
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"bulk_get_push_rules_enabled", f, batch_user_ids
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)
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for row in rows:
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results.setdefault(row['user_name'], {})[row['rule_id']] = row['enabled']
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rows = yield self._simple_select_many_batch(
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table="push_rules_enable",
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column="user_name",
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iterable=user_ids,
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retcols=("user_name", "rule_id", "enabled",),
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desc="bulk_get_push_rules_enabled",
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)
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for row in rows:
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results.setdefault(row['user_name'], {})[row['rule_id']] = row['enabled']
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defer.returnValue(results)
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@defer.inlineCallbacks
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