1 files changed, 108 insertions, 0 deletions
diff --git a/kafka/protocol/group.py b/kafka/protocol/group.py
new file mode 100644
index 0000000..3766e48
--- /dev/null
+++ b/kafka/protocol/group.py
@@ -0,0 +1,108 @@
+from .struct import Struct
+from .types import Array, Bytes, Int16, Int32, Schema, String
+
+
+class JoinGroupResponse(Struct):
+    SCHEMA = Schema(
+        ('error_code', Int16),
+        ('generation_id', Int32),
+        ('group_protocol', String('utf-8')),
+        ('leader_id', String('utf-8')),
+        ('member_id', String('utf-8')),
+        ('members', Array(
+            ('member_id', String('utf-8')),
+            ('member_metadata', Bytes)))
+    )
+
+
+class JoinGroupRequest(Struct):
+    API_KEY = 11
+    API_VERSION = 0
+    RESPONSE_TYPE = JoinGroupResponse
+    SCHEMA = Schema(
+        ('group', String('utf-8')),
+        ('session_timeout', Int32),
+        ('member_id', String('utf-8')),
+        ('protocol_type', String('utf-8')),
+        ('group_protocols', Array(
+            ('protocol_name', String('utf-8')),
+            ('protocol_metadata', Bytes)))
+    )
+
+
+class ProtocolName(Struct):
+    SCHEMA = Schema(
+        ('assignment_strategy', String('utf-8'))
+    )
+
+
+class ProtocolMetadata(Struct):
+    SCHEMA = Schema(
+        ('version', Int16),
+        ('subscription', Array(String('utf-8'))), # topics list
+        ('user_data', Bytes)
+    )
+
+
+class SyncGroupResponse(Struct):
+    SCHEMA = Schema(
+        ('error_code', Int16),
+        ('member_assignment', Bytes)
+    )
+
+
+class SyncGroupRequest(Struct):
+    API_KEY = 14
+    API_VERSION = 0
+    RESPONSE_TYPE = SyncGroupResponse
+    SCHEMA = Schema(
+        ('group', String('utf-8')),
+        ('generation_id', Int32),
+        ('member_id', String('utf-8')),
+        ('group_assignment', Array(
+            ('member_id', String('utf-8')),
+            ('member_metadata', Bytes)))
+    )
+
+
+class MemberAssignment(Struct):
+    SCHEMA = Schema(
+        ('version', Int16),
+        ('partition_assignment', Array(
+            ('topic', String('utf-8')),
+            ('partitions', Array(Int32)))),
+        ('user_data', Bytes)
+    )
+
+
+class HeartbeatResponse(Struct):
+    SCHEMA = Schema(
+        ('error_code', Int16)
+    )
+
+
+class HeartbeatRequest(Struct):
+    API_KEY = 12
+    API_VERSION = 0
+    RESPONSE_TYPE = HeartbeatResponse
+    SCHEMA = Schema(
+        ('group', String('utf-8')),
+        ('generation_id', Int32),
+        ('member_id', String('utf-8'))
+    )
+
+
+class LeaveGroupResponse(Struct):
+    SCHEMA = Schema(
+        ('error_code', Int16)
+    )
+
+
+class LeaveGroupRequest(Struct):
+    API_KEY = 13
+    API_VERSION = 0
+    RESPONSE_TYPE = LeaveGroupResponse
+    SCHEMA = Schema(
+        ('group', String('utf-8')),
+        ('member_id', String('utf-8'))
+    )