Migrate to orjson (JSON library) for better performance

requirements/requirements-schemaregistry.txt

@@ -2,3 +2,4 @@ attrs>=21.2.0
 cachetools>=5.5.0
 httpx>=0.26
 authlib>=1.0.0
+orjson >= 3.10

src/confluent_kafka/avro/serializer/message_serializer.py

@@ -20,7 +20,7 @@
 # derived from https://github.com/verisign/python-confluent-schemaregistry.git
 #
 import io
-import json
+import orjson
 import logging
 import struct
 import sys
@@ -80,7 +80,7 @@ def __init__(self, registry_client, reader_key_schema=None, reader_value_schema=
     # Encoder support
     def _get_encoder_func(self, writer_schema):
         if HAS_FAST:
-            schema = json.loads(str(writer_schema))
+            schema = orjson.loads(str(writer_schema))
             parsed_schema = parse_schema(schema)
             return lambda record, fp: schemaless_writer(fp, parsed_schema, record)
         writer = avro.io.DatumWriter(writer_schema)
@@ -176,9 +176,9 @@ def _get_decoder_func(self, schema_id, payload, is_key=False):
         if HAS_FAST:
             # try to use fast avro
             try:
-                fast_avro_writer_schema = parse_schema(json.loads(str(writer_schema_obj)))
+                fast_avro_writer_schema = parse_schema(orjson.loads(str(writer_schema_obj)))
                 if reader_schema_obj is not None:
-                    fast_avro_reader_schema = parse_schema(json.loads(str(reader_schema_obj)))
+                    fast_avro_reader_schema = parse_schema(orjson.loads(str(reader_schema_obj)))
                 else:
                     fast_avro_reader_schema = None
                 schemaless_reader(payload, fast_avro_writer_schema)

src/confluent_kafka/kafkatest/verifiable_client.py

@@ -14,7 +14,7 @@
 
 
 import datetime
-import json
+import orjson
 import os
 import re
 import signal
@@ -61,8 +61,8 @@ def err(self, s, term=False):
     def send(self, d):
         """ Send dict as JSON to stdout for consumtion by kafkatest handler """
         d['_time'] = str(datetime.datetime.now())
-        self.dbg('SEND: %s' % json.dumps(d))
-        sys.stdout.write('%s\n' % json.dumps(d))
+        self.dbg('SEND: %s' % orjson.dumps(d).decode("utf-8"))
+        sys.stdout.write('%s\n' % orjson.dumps(d).decode("utf-8"))
         sys.stdout.flush()
 
     @staticmethod

src/confluent_kafka/schema_registry/_async/avro.py

@@ -15,7 +15,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 import io
-from json import loads
+import orjson
 from typing import Dict, Union, Optional, Callable
 
 from fastavro import schemaless_reader, schemaless_writer
@@ -270,7 +270,7 @@ async def __init_impl(
                 # i.e. {"type": "string"} has a name of string.
                 # This function does not comply.
                 # https://github.com/fastavro/fastavro/issues/415
-                schema_dict = loads(schema.schema_str)
+                schema_dict = orjson.loads(schema.schema_str)
                 schema_name = parsed_schema.get("name", schema_dict.get("type"))
         else:
             schema_name = None

src/confluent_kafka/schema_registry/_async/json_schema.py

@@ -15,7 +15,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 import io
-import json
+import orjson
 from typing import Union, Optional, Tuple, Callable
 
 from cachetools import LRUCache
@@ -66,7 +66,7 @@
         for ref in schema.references:
             referenced_schema = await schema_registry_client.get_version(ref.subject, ref.version, True)
             ref_registry = await _resolve_named_schema(referenced_schema.schema, schema_registry_client, ref_registry)
-            referenced_schema_dict = json.loads(referenced_schema.schema.schema_str)
+            referenced_schema_dict = orjson.loads(referenced_schema.schema.schema_str)
             resource = Resource.from_contents(
                 referenced_schema_dict, default_specification=DEFAULT_SPEC)
             ref_registry = ref_registry.with_resource(ref.name, resource)
@@ -203,7 +203,7 @@
                      'schema.id.serializer': prefix_schema_id_serializer,
                      'validate': True}
 
     async def __init_impl(
         self,
         schema_str: Union[str, Schema, None],
         schema_registry_client: AsyncSchemaRegistryClient,
@@ -221,7 +221,7 @@
         else:
             self._schema = None
 
-        self._json_encode = json_encode or json.dumps
+        self._json_encode = json_encode or (lambda x: orjson.dumps(x).decode("utf-8"))
         self._registry = schema_registry_client
         self._rule_registry = (
             rule_registry if rule_registry else RuleRegistry.get_global_instance()
@@ -394,7 +394,7 @@
             return result
 
         ref_registry = await _resolve_named_schema(schema, self._registry)
-        parsed_schema = json.loads(schema.schema_str)
+        parsed_schema = orjson.loads(schema.schema_str)
 
         self._parsed_schemas.set(schema, (parsed_schema, ref_registry))
         return parsed_schema, ref_registry
@@ -478,7 +478,7 @@
                      'schema.id.deserializer': dual_schema_id_deserializer,
                      'validate': True}
 
     async def __init_impl(
         self,
         schema_str: Union[str, Schema, None],
         from_dict: Optional[Callable[[dict, SerializationContext], object]] = None,
@@ -510,7 +510,7 @@
         self._rule_registry = rule_registry if rule_registry else RuleRegistry.get_global_instance()
         self._parsed_schemas = ParsedSchemaCache()
         self._validators = LRUCache(1000)
-        self._json_decode = json_decode or json.loads
+        self._json_decode = json_decode or orjson.loads
         self._use_schema_id = None
 
         conf_copy = self._default_conf.copy()
@@ -659,7 +659,7 @@
             return result
 
         ref_registry = await _resolve_named_schema(schema, self._registry)
-        parsed_schema = json.loads(schema.schema_str)
+        parsed_schema = orjson.loads(schema.schema_str)
 
         self._parsed_schemas.set(schema, (parsed_schema, ref_registry))
         return parsed_schema, ref_registry

src/confluent_kafka/schema_registry/_async/schema_registry_client.py

@@ -16,7 +16,7 @@
 # limitations under the License.
 #
 import asyncio
-import json
+import orjson
 import logging
 import time
 import urllib
@@ -416,7 +416,7 @@ async def send_request(
                              " application/json"}
 
         if body is not None:
-            body = json.dumps(body)
+            body = orjson.dumps(body).decode('utf-8')
             headers = {'Content-Length': str(len(body)),
                        'Content-Type': "application/vnd.schemaregistry.v1+json"}
 

src/confluent_kafka/schema_registry/_sync/avro.py

@@ -15,7 +15,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 import io
-from json import loads
+import orjson
 from typing import Dict, Union, Optional, Callable
 
 from fastavro import schemaless_reader, schemaless_writer
@@ -270,7 +270,7 @@ def __init_impl(
                 # i.e. {"type": "string"} has a name of string.
                 # This function does not comply.
                 # https://github.com/fastavro/fastavro/issues/415
-                schema_dict = loads(schema.schema_str)
+                schema_dict = orjson.loads(schema.schema_str)
                 schema_name = parsed_schema.get("name", schema_dict.get("type"))
         else:
             schema_name = None

src/confluent_kafka/schema_registry/_sync/json_schema.py

@@ -15,7 +15,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 import io
-import json
+import orjson
 from typing import Union, Optional, Tuple, Callable
 
 from cachetools import LRUCache
@@ -66,7 +66,7 @@
         for ref in schema.references:
             referenced_schema = schema_registry_client.get_version(ref.subject, ref.version, True)
             ref_registry = _resolve_named_schema(referenced_schema.schema, schema_registry_client, ref_registry)
-            referenced_schema_dict = json.loads(referenced_schema.schema.schema_str)
+            referenced_schema_dict = orjson.loads(referenced_schema.schema.schema_str)
             resource = Resource.from_contents(
                 referenced_schema_dict, default_specification=DEFAULT_SPEC)
             ref_registry = ref_registry.with_resource(ref.name, resource)
@@ -203,7 +203,7 @@
                      'schema.id.serializer': prefix_schema_id_serializer,
                      'validate': True}
 
     def __init_impl(
         self,
         schema_str: Union[str, Schema, None],
         schema_registry_client: SchemaRegistryClient,
@@ -221,7 +221,7 @@
         else:
             self._schema = None
 
-        self._json_encode = json_encode or json.dumps
+        self._json_encode = json_encode or (lambda x: orjson.dumps(x).decode("utf-8"))
         self._registry = schema_registry_client
         self._rule_registry = (
             rule_registry if rule_registry else RuleRegistry.get_global_instance()
@@ -394,7 +394,7 @@
             return result
 
         ref_registry = _resolve_named_schema(schema, self._registry)
-        parsed_schema = json.loads(schema.schema_str)
+        parsed_schema = orjson.loads(schema.schema_str)
 
         self._parsed_schemas.set(schema, (parsed_schema, ref_registry))
         return parsed_schema, ref_registry
@@ -478,7 +478,7 @@
                      'schema.id.deserializer': dual_schema_id_deserializer,
                      'validate': True}
 
     def __init_impl(
         self,
         schema_str: Union[str, Schema, None],
         from_dict: Optional[Callable[[dict, SerializationContext], object]] = None,
@@ -510,7 +510,7 @@
         self._rule_registry = rule_registry if rule_registry else RuleRegistry.get_global_instance()
         self._parsed_schemas = ParsedSchemaCache()
         self._validators = LRUCache(1000)
-        self._json_decode = json_decode or json.loads
+        self._json_decode = json_decode or orjson.loads
         self._use_schema_id = None
 
         conf_copy = self._default_conf.copy()
@@ -659,7 +659,7 @@
             return result
 
         ref_registry = _resolve_named_schema(schema, self._registry)
-        parsed_schema = json.loads(schema.schema_str)
+        parsed_schema = orjson.loads(schema.schema_str)
 
         self._parsed_schemas.set(schema, (parsed_schema, ref_registry))
         return parsed_schema, ref_registry

src/confluent_kafka/schema_registry/_sync/schema_registry_client.py

@@ -16,7 +16,7 @@
 # limitations under the License.
 #
 
-import json
+import orjson
 import logging
 import time
 import urllib
@@ -416,7 +416,7 @@ def send_request(
                              " application/json"}
 
         if body is not None:
-            body = json.dumps(body)
+            body = orjson.dumps(body).decode('utf-8')
             headers = {'Content-Length': str(len(body)),
                        'Content-Type': "application/vnd.schemaregistry.v1+json"}
 

src/confluent_kafka/schema_registry/common/avro.py

@@ -3,7 +3,7 @@
 from collections import defaultdict
 from copy import deepcopy
 from io import BytesIO
-from json import loads
+import orjson
 from typing import Dict, Union, Optional, Set
 
 from fastavro import repository, validate
@@ -91,7 +91,7 @@ def load(self, subject):
 
 def parse_schema_with_repo(schema_str: str, named_schemas: Dict[str, AvroSchema]) -> AvroSchema:
     copy = deepcopy(named_schemas)
-    copy["$root"] = loads(schema_str)
+    copy["$root"] = orjson.loads(schema_str)
     repo = LocalSchemaRepository(copy)
     return load_schema("$root", repo=repo)