feat: alter the schema registry of table with connector

e2e_test/schema_registry/alter_sr.slt

@@ -16,59 +16,68 @@ FORMAT PLAIN ENCODE PROTOBUF(
 statement ok
 CREATE MATERIALIZED VIEW mv_user AS SELECT * FROM src_user;
 
-# Changing type is not allowed
-statement error Feature is not yet implemented: this altering statement will drop columns, which is not supported yet: \(city: character varying\)
-ALTER SOURCE src_user FORMAT PLAIN ENCODE PROTOBUF(
-    schema.registry = 'http://message_queue:8081',
-    message = 'test.UserWithNewType'
-);
-
-# Changing format/encode is not allowed
-statement error Feature is not yet implemented: the original definition is FORMAT Plain ENCODE Protobuf, and altering them is not supported yet
-ALTER SOURCE src_user FORMAT NATIVE ENCODE PROTOBUF(
+statement ok
+CREATE TABLE t_user WITH (
+    connector = 'kafka',
+    topic = 'sr_pb_test',
+    properties.bootstrap.server = 'message_queue:29092',
+    scan.startup.mode = 'earliest'
+)
+FORMAT PLAIN ENCODE PROTOBUF(
     schema.registry = 'http://message_queue:8081',
     message = 'test.User'
 );
 
-statement ok
-ALTER SOURCE src_user FORMAT PLAIN ENCODE PROTOBUF(
-    schema.registry = 'http://message_queue:8081',
-    message = 'test.UserWithMoreFields'
-);
+statement error
+SELECT age FROM mv_user;
 
-# Dropping columns is not allowed
-statement error Feature is not yet implemented: this altering statement will drop columns, which is not supported yet: \(age: integer\)
+statement error
+SELECT age FROM t_user;
+
+# Push more events with extended fields
+system ok
+python3 e2e_test/schema_registry/pb.py "message_queue:29092" "http://message_queue:8081" "sr_pb_test" 5 user_with_more_fields
+
+sleep 5s
+
+# Refresh source schema
+statement ok
 ALTER SOURCE src_user FORMAT PLAIN ENCODE PROTOBUF(
     schema.registry = 'http://message_queue:8081',
     message = 'test.User'
 );
 
 statement ok
-CREATE MATERIALIZED VIEW mv_more_fields AS SELECT * FROM src_user;
+CREATE MATERIALIZED VIEW mv_user_more AS SELECT * FROM src_user;
+
+# Refresh table schema
+statement ok
+ALTER TABLE t_user REFRESH SCHEMA;
 
+query IIII
+SELECT COUNT(*), MAX(age), MIN(age), SUM(age) FROM mv_user_more;
+----
+25 4 0 10
+
+# Push more events with extended fields
 system ok
 python3 e2e_test/schema_registry/pb.py "message_queue:29092" "http://message_queue:8081" "sr_pb_test" 5 user_with_more_fields
 
-sleep 10s
+sleep 5s
 
-query I
-SELECT COUNT(*) FROM mv_user;
+query IIII
+SELECT COUNT(*), MAX(age), MIN(age), SUM(age) FROM t_user;
 ----
-25
-
-statement error
-SELECT SUM(age) FROM mv_user;
+30 4 0 10
 
-query III
-SELECT COUNT(*), MAX(age), MIN(age) FROM mv_more_fields;
-----
-25 4 0
+statement ok
+DROP MATERIALIZED VIEW mv_user_more;
 
 statement ok
-DROP MATERIALIZED VIEW mv_user;
+DROP TABLE t_user;
 
 statement ok
-DROP MATERIALIZED VIEW mv_more_fields;
+DROP MATERIALIZED VIEW mv_user;
 
 statement ok
 DROP SOURCE src_user;

e2e_test/schema_registry/pb.py

@@ -1,6 +1,6 @@
-from protobuf import user_pb2
-from google.protobuf.source_context_pb2 import SourceContext
 import sys
+import importlib
+from google.protobuf.source_context_pb2 import SourceContext
 from confluent_kafka import Producer
 from confluent_kafka.serialization import (
     SerializationContext,
@@ -26,7 +26,7 @@ def get_user(i):
     )
 
 def get_user_with_more_fields(i):
-    return user_pb2.UserWithMoreFields(
+    return user_pb2.User(
         id=i,
         name="User_{}".format(i),
         address="Address_{}".format(i),
@@ -36,16 +36,6 @@ def get_user_with_more_fields(i):
         age=i,
     )
 
-def get_user_with_new_type(i):
-    return user_pb2.UserWithNewType(
-        id=i,
-        name="User_{}".format(i),
-        address="Address_{}".format(i),
-        city=i,
-        gender=user_pb2.MALE if i % 2 == 0 else user_pb2.FEMALE,
-        sc=SourceContext(file_name="source/context_{:03}.proto".format(i)),
-    )
-
 def send_to_kafka(producer_conf, schema_registry_conf, topic, num_records, get_user_fn, pb_message):
     schema_registry_client = SchemaRegistryClient(schema_registry_conf)
     serializer = ProtobufSerializer(
@@ -69,7 +59,7 @@ def send_to_kafka(producer_conf, schema_registry_conf, topic, num_records, get_u
 
 
 if __name__ == "__main__":
-    if len(sys.argv) < 5:
+    if len(sys.argv) < 6:
         print("pb.py <brokerlist> <schema-registry-url> <topic> <num-records> <pb_message>")
         exit(1)
 
@@ -79,10 +69,11 @@ def send_to_kafka(producer_conf, schema_registry_conf, topic, num_records, get_u
     num_records = int(sys.argv[4])
     pb_message = sys.argv[5]
 
+    user_pb2 = importlib.import_module(f'protobuf.{pb_message}_pb2')
+
     all_pb_messages = {
-        'user': (get_user, user_pb2.User),
-        'user_with_more_fields': (get_user_with_more_fields, user_pb2.UserWithMoreFields),
-        'user_with_new_type': (get_user_with_new_type, user_pb2.UserWithNewType),
+        'user': get_user,
+        'user_with_more_fields': get_user_with_more_fields,
     }
 
     assert pb_message in all_pb_messages, f'pb_message must be one of {list(all_pb_messages.keys())}'
@@ -91,7 +82,7 @@ def send_to_kafka(producer_conf, schema_registry_conf, topic, num_records, get_u
     producer_conf = {"bootstrap.servers": broker_list}
 
     try:
-        send_to_kafka(producer_conf, schema_registry_conf, topic, num_records, *all_pb_messages[pb_message])
+        send_to_kafka(producer_conf, schema_registry_conf, topic, num_records, all_pb_messages[pb_message], user_pb2.User)
     except Exception as e:
         print("Send Protobuf data to schema registry and kafka failed {}", e)
         exit(1)

e2e_test/schema_registry/protobuf/user.proto

@@ -17,22 +17,3 @@ enum Gender {
   MALE = 0;
   FEMALE = 1;
 }
-
-message UserWithMoreFields {
-  int32 id = 1;
-  string name = 2;
-  string address = 3;
-  string city = 4;
-  Gender gender = 5;
-  google.protobuf.SourceContext sc = 6;
-  int32 age = 7; // new field here
-}
-
-message UserWithNewType {
-  int32 id = 1;
-  string name = 2;
-  string address = 3;
-  int32 city = 4; // change the type from string to int32
-  Gender gender = 5;
-  google.protobuf.SourceContext sc = 6;
-}

e2e_test/schema_registry/protobuf/user_with_more_fields.proto

@@ -0,0 +1,20 @@
+syntax = "proto3";
+
+package test;
+
+import "google/protobuf/source_context.proto";
+
+message User {
+  int32 id = 1;
+  string name = 2;
+  string address = 3;
+  string city = 4;
+  Gender gender = 5;
+  google.protobuf.SourceContext sc = 6;
+  int32 age = 7; // new field here
+}
+
+enum Gender {
+  MALE = 0;
+  FEMALE = 1;
+}