Add a Homeserver.setup method.

This is for setting up dependencies that require work on startup. This
is useful for the DataStore that wants to read a bunch from the database
before initiliazing.

synapse/storage/_base.py

@@ -15,13 +15,11 @@
 import logging
 
 from synapse.api.errors import StoreError
-from synapse.util.logutils import log_function
 from synapse.util.logcontext import preserve_context_over_fn, LoggingContext
 from synapse.util.caches.dictionary_cache import DictionaryCache
 from synapse.util.caches.descriptors import Cache
 import synapse.metrics
 
-from util.id_generators import IdGenerator, StreamIdGenerator
 
 from twisted.internet import defer
 
@@ -175,16 +173,6 @@ class SQLBaseStore(object):
 
         self.database_engine = hs.database_engine
 
-        self._stream_id_gen = StreamIdGenerator("events", "stream_ordering")
-        self._transaction_id_gen = IdGenerator("sent_transactions", "id", self)
-        self._state_groups_id_gen = IdGenerator("state_groups", "id", self)
-        self._access_tokens_id_gen = IdGenerator("access_tokens", "id", self)
-        self._refresh_tokens_id_gen = IdGenerator("refresh_tokens", "id", self)
-        self._pushers_id_gen = IdGenerator("pushers", "id", self)
-        self._push_rule_id_gen = IdGenerator("push_rules", "id", self)
-        self._push_rules_enable_id_gen = IdGenerator("push_rules_enable", "id", self)
-        self._receipts_id_gen = StreamIdGenerator("receipts_linearized", "stream_id")
-
     def start_profiling(self):
         self._previous_loop_ts = self._clock.time_msec()
 
@@ -345,7 +333,8 @@ class SQLBaseStore(object):
 
         defer.returnValue(result)
 
-    def cursor_to_dict(self, cursor):
+    @staticmethod
+    def cursor_to_dict(cursor):
         """Converts a SQL cursor into an list of dicts.
 
         Args:
@@ -402,8 +391,8 @@ class SQLBaseStore(object):
             if not or_ignore:
                 raise
 
-    @log_function
-    def _simple_insert_txn(self, txn, table, values):
+    @staticmethod
+    def _simple_insert_txn(txn, table, values):
         keys, vals = zip(*values.items())
 
         sql = "INSERT INTO %s (%s) VALUES(%s)" % (
@@ -414,7 +403,8 @@ class SQLBaseStore(object):
 
         txn.execute(sql, vals)
 
-    def _simple_insert_many_txn(self, txn, table, values):
+    @staticmethod
+    def _simple_insert_many_txn(txn, table, values):
         if not values:
             return
 
@@ -537,9 +527,10 @@ class SQLBaseStore(object):
             table, keyvalues, retcol, allow_none=allow_none,
         )
 
-    def _simple_select_one_onecol_txn(self, txn, table, keyvalues, retcol,
+    @classmethod
+    def _simple_select_one_onecol_txn(cls, txn, table, keyvalues, retcol,
                                       allow_none=False):
-        ret = self._simple_select_onecol_txn(
+        ret = cls._simple_select_onecol_txn(
             txn,
             table=table,
             keyvalues=keyvalues,
@@ -554,7 +545,8 @@ class SQLBaseStore(object):
             else:
                 raise StoreError(404, "No row found")
 
-    def _simple_select_onecol_txn(self, txn, table, keyvalues, retcol):
+    @staticmethod
+    def _simple_select_onecol_txn(txn, table, keyvalues, retcol):
         sql = (
             "SELECT %(retcol)s FROM %(table)s WHERE %(where)s"
         ) % {
@@ -603,7 +595,8 @@ class SQLBaseStore(object):
             table, keyvalues, retcols
         )
 
-    def _simple_select_list_txn(self, txn, table, keyvalues, retcols):
+    @classmethod
+    def _simple_select_list_txn(cls, txn, table, keyvalues, retcols):
         """Executes a SELECT query on the named table, which may return zero or
         more rows, returning the result as a list of dicts.
 
@@ -627,7 +620,7 @@ class SQLBaseStore(object):
             )
             txn.execute(sql)
 
-        return self.cursor_to_dict(txn)
+        return cls.cursor_to_dict(txn)
 
     @defer.inlineCallbacks
     def _simple_select_many_batch(self, table, column, iterable, retcols,
@@ -662,7 +655,8 @@ class SQLBaseStore(object):
 
         defer.returnValue(results)
 
-    def _simple_select_many_txn(self, txn, table, column, iterable, keyvalues, retcols):
+    @classmethod
+    def _simple_select_many_txn(cls, txn, table, column, iterable, keyvalues, retcols):
         """Executes a SELECT query on the named table, which may return zero or
         more rows, returning the result as a list of dicts.
 
@@ -699,7 +693,7 @@ class SQLBaseStore(object):
             )
 
         txn.execute(sql, values)
-        return self.cursor_to_dict(txn)
+        return cls.cursor_to_dict(txn)
 
     def _simple_update_one(self, table, keyvalues, updatevalues,
                            desc="_simple_update_one"):
@@ -726,7 +720,8 @@ class SQLBaseStore(object):
             table, keyvalues, updatevalues,
         )
 
-    def _simple_update_one_txn(self, txn, table, keyvalues, updatevalues):
+    @staticmethod
+    def _simple_update_one_txn(txn, table, keyvalues, updatevalues):
         update_sql = "UPDATE %s SET %s WHERE %s" % (
             table,
             ", ".join("%s = ?" % (k,) for k in updatevalues),
@@ -743,7 +738,8 @@ class SQLBaseStore(object):
         if txn.rowcount > 1:
             raise StoreError(500, "More than one row matched")
 
-    def _simple_select_one_txn(self, txn, table, keyvalues, retcols,
+    @staticmethod
+    def _simple_select_one_txn(txn, table, keyvalues, retcols,
                                allow_none=False):
         select_sql = "SELECT %s FROM %s WHERE %s" % (
             ", ".join(retcols),
@@ -784,7 +780,8 @@ class SQLBaseStore(object):
                 raise StoreError(500, "more than one row matched")
         return self.runInteraction(desc, func)
 
-    def _simple_delete_txn(self, txn, table, keyvalues):
+    @staticmethod
+    def _simple_delete_txn(txn, table, keyvalues):
         sql = "DELETE FROM %s WHERE %s" % (
             table,
             " AND ".join("%s = ?" % (k, ) for k in keyvalues)