feat(launch): put job into artifact slot, have run use it, dont produce a job in a launched run that is sourced from a job

wandb/sdk/launch/builder/build.py

@@ -225,7 +225,14 @@ def get_env_vars_dict(launch_project: LaunchProject, api: Api) -> Dict[str, str]
 
     # TODO: handle env vars > 32760 characters
     env_vars["WANDB_CONFIG"] = json.dumps(launch_project.override_config)
-    env_vars["WANDB_ARTIFACTS"] = json.dumps(launch_project.override_artifacts)
+    artifacts = {}
+    # if we're spinning up a launch process from a job
+    # we should tell the run to use that artifact
+    if launch_project.job:
+        artifacts = {wandb.util.LAUNCH_JOB_ARTIFACT_SLOT_NAME: launch_project.job}
+    env_vars["WANDB_ARTIFACTS"] = json.dumps(
+        {**artifacts, **launch_project.override_artifacts}
+    )
     #  check if the user provided an override entrypoint, otherwise use the default
 
     if launch_project.override_entrypoint is not None:

wandb/sdk/wandb_init.py

@@ -752,6 +752,11 @@ def init(self) -> Union[Run, RunDisabled, None]:  # noqa: C901
         # as the run is not upserted
         for k, v in self.init_artifact_config.items():
             run.config.update({k: v}, allow_val_change=True)
+        job_artifact = run._launch_artifact_mapping.get(
+            wandb.util.LAUNCH_JOB_ARTIFACT_SLOT_NAME
+        )
+        if job_artifact:
+            run.use_artifact(job_artifact)
 
         self.backend = backend
         self._reporter.set_context(run=run)

wandb/sdk/wandb_run.py

@@ -2043,6 +2043,12 @@ def _on_ready(self) -> None:
         self._freeze()
 
     def _log_job(self) -> None:
+        # don't produce a job if the run is sourced from a job
+        if (
+            self._launch_artifact_mapping.get(wandb.util.LAUNCH_JOB_ARTIFACT_SLOT_NAME)
+            is not None
+        ):
+            return
         artifact = None
         input_types = TypeRegistry.type_of(self.config.as_dict()).to_json()
         output_types = TypeRegistry.type_of(self.summary._as_dict()).to_json()

wandb/util.py

@@ -79,6 +79,8 @@
 PLATFORM_DARWIN = "darwin"
 PLATFORM_UNKNOWN = "unknown"
 
+LAUNCH_JOB_ARTIFACT_SLOT_NAME = "_wandb_job"
+
 
 def get_platform_name() -> str:
     if sys.platform.startswith("win"):