KIP 848: Added support for DescribeConsumerGroup for consumer protocol groups (#1873)

* Added support for describe consumer group for new protocol

* style fix

* removed session timeout

* style fix

* Simplifying test code

* target assignment declaration

* Protocol->group_protocol

* name change

* Changelog added

* removed test

* Changelog change

* v2.10.0rc3 release changes (#1969)

---------

Co-authored-by: Pranav Rathi <4427674+pranavrth@users.noreply.github.com>

Author: PratRanj07

CHANGELOG.md

@@ -1,5 +1,16 @@
 # Confluent's Python client for Apache Kafka
 
+## v2.10.0
+
+v2.10.0 is a feature release with the following fixes and enhancements:
+
+- [KIP-848] Group Config is now supported in AlterConfigs, IncrementalAlterConfigs and DescribeConfigs. (#1856)
+- [KIP-848] `describe_consumer_groups()` now supports KIP-848 introduced `consumer` groups. Two new fields for consumer group type and target assignment have also been added. Type defines whether this group is a `classic` or `consumer` group. Target assignment is only valid for the `consumer` protocol and its defaults to NULL. (#1873).
+
+confluent-kafka-python v2.10.0 is based on librdkafka v2.10.0, see the
+[librdkafka release notes](https://github.com/confluentinc/librdkafka/releases/tag/v2.10.0)
+for a complete list of changes, enhancements, fixes and upgrade considerations.
+
 ## v2.9.0
 
 v2.9.0 is a feature release with the following fixes and enhancements:

docs/conf.py

@@ -20,14 +20,14 @@
 ######################################################################
 # General information about the project.
 project = u'confluent-kafka'
-copyright = u'2016-2024, Confluent Inc.'
+copyright = u'2016-2025, Confluent Inc.'
 
 # The version info for the project you're documenting, acts as replacement for
 # |version| and |release|, also used in various other places throughout the
 # built documents.
 #
 # The short X.Y version.
-version = '2.9.0'
+version = '2.10.0rc3'
 # The full version, including alpha/beta/rc tags.
 release = version
 ######################################################################

examples/adminapi.py

@@ -535,6 +535,7 @@ def example_describe_consumer_groups(a, args):
             print("Group Id: {}".format(g.group_id))
             print("  Is Simple          : {}".format(g.is_simple_consumer_group))
             print("  State              : {}".format(g.state))
+            print("  Type               : {}".format(g.type))
             print("  Partition Assignor : {}".format(g.partition_assignor))
             print(
                 f"  Coordinator        : {g.coordinator}")
@@ -548,6 +549,10 @@ def example_describe_consumer_groups(a, args):
                     print("    Assignments       :")
                     for toppar in member.assignment.topic_partitions:
                         print("      {} [{}]".format(toppar.topic, toppar.partition))
+                if member.target_assignment:
+                    print("    Target Assignments:")
+                    for toppar in member.target_assignment.topic_partitions:
+                        print(f"      {toppar.topic} [{toppar.partition}]")
             if (include_auth_ops):
                 print("  Authorized operations: ")
                 op_string = ""

examples/docker/Dockerfile.alpine

@@ -30,7 +30,7 @@ FROM alpine:3.12
 
 COPY . /usr/src/confluent-kafka-python
 
-ENV LIBRDKAFKA_VERSION="v2.8.0"
+ENV LIBRDKAFKA_VERSION="v2.10.0-RC3"
 ENV KCAT_VERSION="master"
 ENV CKP_VERSION="master"
 

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "confluent-kafka"
-version = "2.9.0"
+version = "2.10.0rc3"
 description = "Confluent's Python client for Apache Kafka"
 classifiers = [
     "Development Status :: 5 - Production/Stable",

src/confluent_kafka/admin/_group.py

@@ -94,15 +94,18 @@ class MemberDescription:
         The host where the group member is running.
     assignment: MemberAssignment
         The assignment of the group member
+    target_assignment: MemberAssignment
+        The target assignment of the group member
     group_instance_id : str
         The instance id of the group member.
     """
 
-    def __init__(self, member_id, client_id, host, assignment, group_instance_id=None):
+    def __init__(self, member_id, client_id, host, assignment, group_instance_id=None, target_assignment=None):
         self.member_id = member_id
         self.client_id = client_id
         self.host = host
         self.assignment = assignment
+        self.target_assignment = target_assignment
         self.group_instance_id = group_instance_id
 
 
@@ -123,14 +126,16 @@ class ConsumerGroupDescription:
         Partition assignor.
     state : ConsumerGroupState
         Current state of the consumer group.
+    type  : ConsumerGroupType
+        Type of the consumer group.
     coordinator: Node
         Consumer group coordinator.
     authorized_operations: list(AclOperation)
         AclOperations allowed for the consumer group.
     """
 
     def __init__(self, group_id, is_simple_consumer_group, members, partition_assignor, state,
-                 coordinator, authorized_operations=None):
+                 coordinator, authorized_operations=None, type=ConsumerGroupType.UNKNOWN):
         self.group_id = group_id
         self.is_simple_consumer_group = is_simple_consumer_group
         self.members = members
@@ -143,4 +148,6 @@ def __init__(self, group_id, is_simple_consumer_group, members, partition_assign
         self.partition_assignor = partition_assignor
         if state is not None:
             self.state = ConversionUtil.convert_to_enum(state, ConsumerGroupState)
+        if type is not None:
+            self.type = ConversionUtil.convert_to_enum(type, ConsumerGroupType)
         self.coordinator = coordinator

src/confluent_kafka/src/Admin.c

@@ -3857,7 +3857,9 @@ static PyObject *Admin_c_MemberDescription_to_py(const rd_kafka_MemberDescriptio
         PyObject *args = NULL;
         PyObject *kwargs = NULL;
         PyObject *assignment = NULL;
+        PyObject *target_assignment = NULL;
         const rd_kafka_MemberAssignment_t *c_assignment;
+        const rd_kafka_MemberAssignment_t *c_target_assignment;
 
         MemberDescription_type = cfl_PyObject_lookup("confluent_kafka.admin",
                                                      "MemberDescription");
@@ -3892,6 +3894,15 @@ static PyObject *Admin_c_MemberDescription_to_py(const rd_kafka_MemberDescriptio
 
         PyDict_SetItemString(kwargs, "assignment", assignment);
 
+        c_target_assignment = rd_kafka_MemberDescription_target_assignment(c_member);
+        if(c_target_assignment) {
+                target_assignment = Admin_c_MemberAssignment_to_py(c_target_assignment);
+                if (!target_assignment) {
+                        goto err;
+                }
+                PyDict_SetItemString(kwargs, "target_assignment", target_assignment);
+        }
+
         args = PyTuple_New(0);
 
         member = PyObject_Call(MemberDescription_type, args, kwargs);
@@ -3900,6 +3911,7 @@ static PyObject *Admin_c_MemberDescription_to_py(const rd_kafka_MemberDescriptio
         Py_DECREF(kwargs);
         Py_DECREF(MemberDescription_type);
         Py_DECREF(assignment);
+        Py_XDECREF(target_assignment);
         return member;
 
 err:
@@ -3908,6 +3920,7 @@ static PyObject *Admin_c_MemberDescription_to_py(const rd_kafka_MemberDescriptio
         Py_XDECREF(kwargs);
         Py_XDECREF(MemberDescription_type);
         Py_XDECREF(assignment);
+        Py_XDECREF(target_assignment);
         Py_XDECREF(member);
         return NULL;
 }
@@ -4003,6 +4016,8 @@ static PyObject *Admin_c_ConsumerGroupDescription_to_py(
 
         cfl_PyDict_SetInt(kwargs, "state", rd_kafka_ConsumerGroupDescription_state(c_consumer_group_description));
 
+        cfl_PyDict_SetInt(kwargs, "type", rd_kafka_ConsumerGroupDescription_type(c_consumer_group_description));
+
         args = PyTuple_New(0);
 
         consumer_group_description = PyObject_Call(ConsumerGroupDescription_type, args, kwargs);

src/confluent_kafka/src/confluent_kafka.h

@@ -42,28 +42,28 @@
  *  0xMMmmRRPP
  *  MM=major, mm=minor, RR=revision, PP=patchlevel (not used)
  */
-#define CFL_VERSION     0x02090000
-#define CFL_VERSION_STR "2.9.0"
+#define CFL_VERSION     0x020a0000
+#define CFL_VERSION_STR "2.10.0rc3"
 
 /**
  * Minimum required librdkafka version. This is checked both during
  * build-time (just below) and runtime (see confluent_kafka.c).
  * Make sure to keep the MIN_RD_KAFKA_VERSION, MIN_VER_ERRSTR and #error
  * defines and strings in sync.
  */
-#define MIN_RD_KAFKA_VERSION 0x020800ff
+#define MIN_RD_KAFKA_VERSION 0x020a00ff
 
 #ifdef __APPLE__
-#define MIN_VER_ERRSTR "confluent-kafka-python requires librdkafka v2.8.0 or later. Install the latest version of librdkafka from Homebrew by running `brew install librdkafka` or `brew upgrade librdkafka`"
+#define MIN_VER_ERRSTR "confluent-kafka-python requires librdkafka v2.10.0 or later. Install the latest version of librdkafka from Homebrew by running `brew install librdkafka` or `brew upgrade librdkafka`"
 #else
-#define MIN_VER_ERRSTR "confluent-kafka-python requires librdkafka v2.8.0 or later. Install the latest version of librdkafka from the Confluent repositories, see http://docs.confluent.io/current/installation.html"
+#define MIN_VER_ERRSTR "confluent-kafka-python requires librdkafka v2.10.0 or later. Install the latest version of librdkafka from the Confluent repositories, see http://docs.confluent.io/current/installation.html"
 #endif
 
 #if RD_KAFKA_VERSION < MIN_RD_KAFKA_VERSION
 #ifdef __APPLE__
-#error "confluent-kafka-python requires librdkafka v2.8.0 or later. Install the latest version of librdkafka from Homebrew by running `brew install librdkafka` or `brew upgrade librdkafka`"
+#error "confluent-kafka-python requires librdkafka v2.10.0 or later. Install the latest version of librdkafka from Homebrew by running `brew install librdkafka` or `brew upgrade librdkafka`"
 #else
-#error "confluent-kafka-python requires librdkafka v2.8.0 or later. Install the latest version of librdkafka from the Confluent repositories, see http://docs.confluent.io/current/installation.html"
+#error "confluent-kafka-python requires librdkafka v2.10.0 or later. Install the latest version of librdkafka from the Confluent repositories, see http://docs.confluent.io/current/installation.html"
 #endif
 #endif