Change port script to work with postgres

scripts/port_to_maria.py

@@ -22,6 +22,7 @@ from synapse.storage.engines import create_engine
 import argparse
 import itertools
 import logging
+import types
 import yaml
 
 
@@ -51,6 +52,14 @@ UNICODE_COLUMNS = {
 }
 
 
+BOOLEAN_COLUMNS = {
+    "events": ["processed", "outlier"],
+    "rooms": ["is_public"],
+    "event_edges": ["is_state"],
+    "presence_list": ["accepted"],
+}
+
+
 APPEND_ONLY_TABLES = [
     "event_content_hashes",
     "event_reference_hashes",
@@ -126,14 +135,13 @@ class Store(object):
 
         return self.db_pool.runWithConnection(r)
 
-    def insert_many(self, table, headers, rows):
+    def insert_many_txn(self, txn, table, headers, rows):
         sql = "INSERT INTO %s (%s) VALUES (%s)" % (
             table,
             ", ".join(k for k in headers),
             ", ".join("%s" for _ in headers)
         )
 
-        def t(txn):
         try:
             txn.executemany(sql, rows)
         except:
@@ -143,7 +151,6 @@ class Store(object):
             )
             raise
 
-        return self.runInteraction("insert_many", t)
 
 
 def chunks(n):
@@ -175,7 +182,7 @@ def handle_table(table, sqlite_store, mysql_store):
                 "DELETE FROM port_from_sqlite3 WHERE table_name = %s",
                 (table,)
             )
-            txn.execute("DELETE FROM %s" % (table,))
+            txn.execute("TRUNCATE %s CASCADE" % (table,))
             mysql_store._simple_insert_txn(
                 txn,
                 table="port_from_sqlite3",
@@ -188,14 +195,15 @@ def handle_table(table, sqlite_store, mysql_store):
 
         next_chunk = 0
 
+    logger.info("next_chunk for %s: %d", table, next_chunk)
+
     N = 5000
 
     select = "SELECT rowid, * FROM %s WHERE rowid >= ? ORDER BY rowid LIMIT ?" % (table,)
 
     uni_col_names = UNICODE_COLUMNS.get(table, [])
-
-    def conv_uni(c):
-        return sqlite_store.database_engine.load_unicode(c)
+    bool_col_names = BOOLEAN_COLUMNS.get(table, [])
+    bin_col_names = BINARY_COLUMNS.get(table, [])
 
     while True:
         def r(txn):
@@ -211,24 +219,42 @@ def handle_table(table, sqlite_store, mysql_store):
 
         if rows:
             uni_cols = [i for i, h in enumerate(headers) if h in uni_col_names]
+            bool_cols = [i for i, h in enumerate(headers) if h in bool_col_names]
+            bin_cols = [i for i, h in enumerate(headers) if h in bin_col_names]
             next_chunk = rows[-1][0] + 1
 
+            def conv(j, col):
+                if j in uni_cols:
+                    col = sqlite_store.database_engine.load_unicode(col)
+                if j in bool_cols:
+                    return bool(col)
+
+                if j in bin_cols:
+                    if isinstance(col, types.UnicodeType):
+                        col = buffer(col.encode("utf8"))
+
+                return col
+
             for i, row in enumerate(rows):
                 rows[i] = tuple(
                     mysql_store.database_engine.encode_parameter(
-                        conv_uni(col) if j in uni_cols else col
+                        conv(j, col)
                     )
                     for j, col in enumerate(row)
                     if j > 0
                 )
 
-            yield mysql_store.insert_many(table, headers[1:], rows)
+            def ins(txn):
+                mysql_store.insert_many_txn(txn, table, headers[1:], rows)
 
-            yield mysql_store._simple_update_one(
+                mysql_store._simple_update_one_txn(
+                    txn,
                     table="port_from_sqlite3",
                     keyvalues={"table_name": table},
                     updatevalues={"rowid": next_chunk},
                 )
+
+            yield mysql_store.runInteraction("insert_many", ins)
         else:
             return
 
@@ -260,7 +286,7 @@ def main(sqlite_config, mysql_config):
         )
 
         sqlite_engine = create_engine("sqlite3")
-        mysql_engine = create_engine("mysql.connector")
+        mysql_engine = create_engine("psycopg2")
 
         sqlite_store = Store(sqlite_db_pool, sqlite_engine)
         mysql_store = Store(mysql_db_pool, mysql_engine)
@@ -285,20 +311,19 @@ def main(sqlite_config, mysql_config):
         logger.info("Found %d tables", len(tables))
 
         def create_port_table(txn):
-            try:
             txn.execute(
                 "CREATE TABLE port_from_sqlite3 ("
-                    " `table_name` varchar(100) NOT NULL UNIQUE,"
-                    " `rowid` bigint unsigned NOT NULL"
+                " table_name varchar(100) NOT NULL UNIQUE,"
+                " rowid bigint NOT NULL"
                 ")"
             )
-            except mysql_engine.module.DatabaseError as e:
-                if e.errno != mysql_engine.module.errorcode.ER_TABLE_EXISTS_ERROR:
-                    raise
 
+        try:
             yield mysql_store.runInteraction(
                 "create_port_table", create_port_table
             )
+        except Exception as e:
+            logger.info("Failed to create port table: %s", e)
 
         # Process tables.
         yield defer.gatherResults(
@@ -342,17 +367,12 @@ if __name__ == "__main__":
     }
 
     mysql_config = yaml.safe_load(args.mysql_config)
-    mysql_config["args"].update({
-        "sql_mode": "TRADITIONAL",
-        "charset": "utf8mb4",
-        "use_unicode": True,
-        "collation": "utf8mb4_bin",
-    })
-
-    import codecs
-    codecs.register(
-        lambda name: codecs.lookup('utf8') if name == "utf8mb4" else None
-    )
+    # mysql_config["args"].update({
+    #     "sql_mode": "TRADITIONAL",
+    #     "charset": "utf8mb4",
+    #     "use_unicode": True,
+    #     "collation": "utf8mb4_bin",
+    # })
 
     reactor.callWhenRunning(
         main,