Propagate custom_info Dict through agent Resource

 - The agent defines a Resource return type with values:

   * outputs
   * message
   * log_links
   * phase

   These are all a part of the underlying protobuf contract defined in
   flyteidl.

   However, the message field custom_info from the protobuf is not here

   google.protobuf.Struct custom_info

   https://github.com/flyteorg/flyte/blob/519080b6e4e53fc0e216b5715ad9b5b5270f35c0/flyteidl/protos/flyteidl/admin/agent.proto#L140

   This field was added in flyteorg/flyte#4874
   but never made it into the corresponding flytekit PR
   #2146

 - It's useful for agents to return additional metadata about the job,
   and it looks like custom_info is the intended location

 - Make a minor refactor to how the agent responds to requests that
   return Resource by implementing to_flyte_idl / from_flyte_idl
   directly

Signed-off-by: ddl-ebrown <ethan.brown@dominodatalab.com>

flytekit/extend/backend/agent_service.py

@@ -16,7 +16,6 @@
     GetTaskResponse,
     ListAgentsRequest,
     ListAgentsResponse,
-    Resource,
 )
 from flyteidl.service.agent_pb2_grpc import (
     AgentMetadataServiceServicer,
@@ -25,8 +24,7 @@
 )
 from prometheus_client import Counter, Summary
 
-from flytekit import FlyteContext, logger
-from flytekit.core.type_engine import TypeEngine
+from flytekit import logger
 from flytekit.exceptions.system import FlyteAgentNotFound
 from flytekit.extend.backend.base_agent import AgentRegistry, SyncAgentBase, mirror_async_methods
 from flytekit.models.literals import LiteralMap
@@ -136,16 +134,7 @@ async def GetTask(self, request: GetTaskRequest, context: grpc.ServicerContext)
         logger.info(f"{agent.name} start checking the status of the job")
         res = await mirror_async_methods(agent.get, resource_meta=agent.metadata_type.decode(request.resource_meta))
 
-        if res.outputs is None:
-            outputs = None
-        elif isinstance(res.outputs, LiteralMap):
-            outputs = res.outputs.to_flyte_idl()
-        else:
-            ctx = FlyteContext.current_context()
-            outputs = TypeEngine.dict_to_literal_map_pb(ctx, res.outputs)
-        return GetTaskResponse(
-            resource=Resource(phase=res.phase, log_links=res.log_links, message=res.message, outputs=outputs)
-        )
+        return GetTaskResponse(resource=res.to_flyte_idl())
 
     @record_agent_metrics
     async def DeleteTask(self, request: DeleteTaskRequest, context: grpc.ServicerContext) -> DeleteTaskResponse:
@@ -175,17 +164,7 @@ async def ExecuteTaskSync(
                 literal_map = LiteralMap.from_flyte_idl(request.inputs) if request.inputs else None
                 res = await mirror_async_methods(agent.do, task_template=template, inputs=literal_map)
 
-                if res.outputs is None:
-                    outputs = None
-                elif isinstance(res.outputs, LiteralMap):
-                    outputs = res.outputs.to_flyte_idl()
-                else:
-                    ctx = FlyteContext.current_context()
-                    outputs = TypeEngine.dict_to_literal_map_pb(ctx, res.outputs)
-
-                header = ExecuteTaskSyncResponseHeader(
-                    resource=Resource(phase=res.phase, log_links=res.log_links, message=res.message, outputs=outputs)
-                )
+                header = ExecuteTaskSyncResponseHeader(resource=res.to_flyte_idl())
                 yield ExecuteTaskSyncResponse(header=header)
             request_success_count.labels(task_type=task_type, operation=do_operation).inc()
         except Exception as e:

flytekit/extend/backend/base_agent.py

@@ -12,9 +12,12 @@
 from typing import Any, Dict, List, Optional, Union
 
 from flyteidl.admin.agent_pb2 import Agent
+from flyteidl.admin.agent_pb2 import Resource as _Resource
 from flyteidl.admin.agent_pb2 import TaskCategory as _TaskCategory
 from flyteidl.core import literals_pb2
 from flyteidl.core.execution_pb2 import TaskExecution, TaskLog
+from google.protobuf import json_format
+from google.protobuf.struct_pb2 import Struct
 from rich.logging import RichHandler
 from rich.progress import Progress
 
@@ -27,6 +30,7 @@
 from flytekit.exceptions.user import FlyteUserException
 from flytekit.extend.backend.utils import is_terminal_phase, mirror_async_methods, render_task_template
 from flytekit.loggers import set_flytekit_log_properties
+from flytekit.models import common
 from flytekit.models.literals import LiteralMap
 from flytekit.models.task import TaskExecutionMetadata, TaskTemplate
 
@@ -75,7 +79,7 @@ def decode(cls, data: bytes) -> "ResourceMeta":
 
 
 @dataclass
-class Resource:
+class Resource(common.FlyteIdlEntity):
     """
     This is the output resource of the job.
 
@@ -90,6 +94,36 @@ class Resource:
     message: Optional[str] = None
     log_links: Optional[List[TaskLog]] = None
     outputs: Optional[Union[LiteralMap, typing.Dict[str, Any]]] = None
+    custom_info: Optional[typing.Dict[str, Any]] = None
+
+    def to_flyte_idl(self) -> _Resource:
+        if self.outputs is None:
+            outputs = None
+        elif isinstance(self.outputs, LiteralMap):
+            outputs = self.outputs.to_flyte_idl()
+        else:
+            ctx = FlyteContext.current_context()
+            outputs = TypeEngine.dict_to_literal_map_pb(ctx, self.outputs)
+
+        return _Resource(
+            phase=self.phase,
+            message=self.message,
+            log_links=self.log_links,
+            outputs=outputs,
+            custom_info=(json_format.Parse(json.dumps(self.custom_info), Struct()) if self.custom_info else None),
+        )
+
+    @classmethod
+    def from_flyte_idl(cls, pb2_object: _Resource):
+        return cls(
+            phase=pb2_object.phase,
+            message=pb2_object.message,
+            log_links=pb2_object.log_links,
+            outputs=(LiteralMap.from_flyte_idl(pb2_object.outputs) if pb2_object.outputs else None),
+            custom_info=(
+                json_format.MessageToDict(pb2_object.custom_info) if pb2_object.HasField("custom_info") else None
+            ),
+        )
 
 
 class AgentBase(ABC):

tests/flytekit/unit/extend/test_agent.py

@@ -22,11 +22,20 @@
 
 from flytekit import PythonFunctionTask, task
 from flytekit.clis.sdk_in_container.serve import print_agents_metadata
-from flytekit.configuration import FastSerializationSettings, Image, ImageConfig, SerializationSettings
+from flytekit.configuration import (
+    FastSerializationSettings,
+    Image,
+    ImageConfig,
+    SerializationSettings,
+)
 from flytekit.core.base_task import PythonTask, kwtypes
 from flytekit.core.interface import Interface
 from flytekit.exceptions.system import FlyteAgentNotFound
-from flytekit.extend.backend.agent_service import AgentMetadataService, AsyncAgentService, SyncAgentService
+from flytekit.extend.backend.agent_service import (
+    AgentMetadataService,
+    AsyncAgentService,
+    SyncAgentService,
+)
 from flytekit.extend.backend.base_agent import (
     AgentRegistry,
     AsyncAgentBase,
@@ -70,7 +79,11 @@ def create(self, task_template: TaskTemplate, inputs: typing.Optional[LiteralMap
         return DummyMetadata(job_id=dummy_id)
 
     def get(self, resource_meta: DummyMetadata, **kwargs) -> Resource:
-        return Resource(phase=TaskExecution.SUCCEEDED, log_links=[TaskLog(name="console", uri="localhost:3000")])
+        return Resource(
+            phase=TaskExecution.SUCCEEDED,
+            log_links=[TaskLog(name="console", uri="localhost:3000")],
+            custom_info={"custom": "info", "num": 1},
+        )
 
     def delete(self, resource_meta: DummyMetadata, **kwargs):
         ...
@@ -95,7 +108,11 @@ async def create(
         return DummyMetadata(job_id=dummy_id, output_path=output_path, task_name=task_name)
 
     async def get(self, resource_meta: DummyMetadata, **kwargs) -> Resource:
-        return Resource(phase=TaskExecution.SUCCEEDED, log_links=[TaskLog(name="console", uri="localhost:3000")])
+        return Resource(
+            phase=TaskExecution.SUCCEEDED,
+            log_links=[TaskLog(name="console", uri="localhost:3000")],
+            custom_info={"custom": "info", "num": 1},
+        )
 
     async def delete(self, resource_meta: DummyMetadata, **kwargs):
         ...
@@ -107,7 +124,12 @@ class MockOpenAIAgent(SyncAgentBase):
     def __init__(self):
         super().__init__(task_type_name="openai")
 
-    def do(self, task_template: TaskTemplate, inputs: typing.Optional[LiteralMap] = None, **kwargs) -> Resource:
+    def do(
+        self,
+        task_template: TaskTemplate,
+        inputs: typing.Optional[LiteralMap] = None,
+        **kwargs,
+    ) -> Resource:
         assert inputs.literals["a"].scalar.primitive.integer == 1
         return Resource(phase=TaskExecution.SUCCEEDED, outputs={"o0": 1})
 
@@ -172,6 +194,8 @@ def test_dummy_agent():
     assert resource.phase == TaskExecution.SUCCEEDED
     assert resource.log_links[0].name == "console"
     assert resource.log_links[0].uri == "localhost:3000"
+    assert resource.custom_info["custom"] == "info"
+    assert resource.custom_info["num"] == 1
     assert agent.delete(metadata) is None
 
     class DummyTask(AsyncAgentExecutorMixin, PythonFunctionTask):
@@ -187,7 +211,9 @@ def __init__(self, **kwargs):
 
 
 @pytest.mark.parametrize(
-    "agent,consume_metadata", [(DummyAgent(), False), (AsyncDummyAgent(), True)], ids=["sync", "async"]
+    "agent,consume_metadata",
+    [(DummyAgent(), False), (AsyncDummyAgent(), True)],
+    ids=["sync", "async"],
 )
 @pytest.mark.asyncio
 async def test_async_agent_service(agent, consume_metadata):
@@ -220,7 +246,10 @@ async def test_async_agent_service(agent, consume_metadata):
     assert res.resource_meta == metadata_bytes
     res = await service.GetTask(GetTaskRequest(task_category=task_category, resource_meta=metadata_bytes), ctx)
     assert res.resource.phase == TaskExecution.SUCCEEDED
-    res = await service.DeleteTask(DeleteTaskRequest(task_category=task_category, resource_meta=metadata_bytes), ctx)
+    res = await service.DeleteTask(
+        DeleteTaskRequest(task_category=task_category, resource_meta=metadata_bytes),
+        ctx,
+    )
     assert res is None
 
     agent_metadata = AgentRegistry.get_agent_metadata(agent.name)
@@ -267,7 +296,9 @@ def test_openai_agent():
     class OpenAITask(SyncAgentExecutorMixin, PythonTask):
         def __init__(self, **kwargs):
             super().__init__(
-                task_type="openai", interface=Interface(inputs=kwtypes(a=int), outputs=kwtypes(o0=int)), **kwargs
+                task_type="openai",
+                interface=Interface(inputs=kwtypes(a=int), outputs=kwtypes(o0=int)),
+                **kwargs,
             )
 
     t = OpenAITask(task_config={}, name="openai task")
@@ -391,10 +422,14 @@ def test_render_task_template():
 @pytest.fixture
 def sample_agents():
     async_agent = Agent(
-        name="Sensor", is_sync=False, supported_task_categories=[TaskCategory(name="sensor", version=0)]
+        name="Sensor",
+        is_sync=False,
+        supported_task_categories=[TaskCategory(name="sensor", version=0)],
     )
     sync_agent = Agent(
-        name="ChatGPT Agent", is_sync=True, supported_task_categories=[TaskCategory(name="chatgpt", version=0)]
+        name="ChatGPT Agent",
+        is_sync=True,
+        supported_task_categories=[TaskCategory(name="chatgpt", version=0)],
     )
     return [async_agent, sync_agent]
 
@@ -406,7 +441,51 @@ def test_print_agents_metadata_output(list_agents_mock, mock_secho, sample_agent
     print_agents_metadata()
     expected_calls = [
         (("Starting Sensor that supports task categories ['sensor']",), {"fg": "blue"}),
-        (("Starting ChatGPT Agent that supports task categories ['chatgpt']",), {"fg": "blue"}),
+        (
+            ("Starting ChatGPT Agent that supports task categories ['chatgpt']",),
+            {"fg": "blue"},
+        ),
     ]
     mock_secho.assert_has_calls(expected_calls, any_order=True)
     assert mock_secho.call_count == len(expected_calls)
+
+
+def test_resource_type():
+    o = Resource(
+        phase=TaskExecution.SUCCEEDED,
+    )
+    v = o.to_flyte_idl()
+    assert v
+    assert v.phase == TaskExecution.SUCCEEDED
+    assert len(v.log_links) == 0
+    assert v.message == ""
+    assert len(v.outputs.literals) == 0
+    assert len(v.custom_info) == 0
+
+    o2 = Resource.from_flyte_idl(v)
+    assert o2
+
+    o = Resource(
+        phase=TaskExecution.SUCCEEDED,
+        log_links=[TaskLog(name="console", uri="localhost:3000")],
+        message="foo",
+        outputs={"o0": 1},
+        custom_info={"custom": "info", "num": 1},
+    )
+    v = o.to_flyte_idl()
+    assert v
+    assert v.phase == TaskExecution.SUCCEEDED
+    assert v.log_links[0].name == "console"
+    assert v.log_links[0].uri == "localhost:3000"
+    assert v.message == "foo"
+    assert v.outputs.literals["o0"].scalar.primitive.integer == 1
+    assert v.custom_info["custom"] == "info"
+    assert v.custom_info["num"] == 1
+
+    o2 = Resource.from_flyte_idl(v)
+    assert o2.phase == o.phase
+    assert o2.log_links == o.log_links
+    assert o2.message == o.message
+    # round-tripping creates a literal map out of outputs
+    assert o2.outputs.literals["o0"].scalar.primitive.integer == 1
+    assert o2.custom_info == o.custom_info