43dbb81a95
Canonical location for documentation, example workflows and reference service implementations covering distributed execution patterns. Covers AC1-AC4: execution-target selection, decision support, readiness checks and code-level linkage. Tightly coupled jobs and the loosely coupled subprocess transport are verified by the test suite; the Kubernetes pipes transport is implemented but not yet cluster-run and is marked as such in the guide. Changelog: added
60 lines
1.8 KiB
Python
60 lines
1.8 KiB
Python
"""Verifies that execution-target linkage is what the guide claims it is."""
|
|
|
|
import pytest
|
|
|
|
from distributed_execution.preflight import check_env_vars, describe_pod_identity
|
|
from distributed_execution.repository import defs
|
|
from distributed_execution.tightly_coupled.jobs import (
|
|
tightly_coupled_in_process_job,
|
|
tightly_coupled_k8s_job,
|
|
tightly_coupled_local_job,
|
|
)
|
|
|
|
EXPECTED_JOBS = {
|
|
"tightly_coupled_in_process_job",
|
|
"tightly_coupled_local_job",
|
|
"tightly_coupled_k8s_job",
|
|
}
|
|
|
|
|
|
def test_repository_registers_tightly_coupled_jobs():
|
|
names = {job.name for job in defs.jobs}
|
|
assert EXPECTED_JOBS <= names
|
|
|
|
|
|
@pytest.mark.parametrize(
|
|
("job", "expected_executor"),
|
|
[
|
|
(tightly_coupled_in_process_job, "in_process"),
|
|
(tightly_coupled_local_job, "multiprocess"),
|
|
(tightly_coupled_k8s_job, "k8s_job"),
|
|
],
|
|
)
|
|
def test_each_job_declares_its_execution_target(job, expected_executor):
|
|
assert job.tags["execution_target"] == "tightly_coupled"
|
|
assert job.tags["executor"] == expected_executor
|
|
|
|
|
|
def test_in_process_job_runs_end_to_end():
|
|
result = tightly_coupled_in_process_job.execute_in_process()
|
|
|
|
assert result.success
|
|
summary = result.output_for_node("summarise_results")
|
|
assert summary["units"] == 4
|
|
assert summary["total"] == 14 # 0 + 1 + 4 + 9
|
|
# In-process execution never fans out beyond the run worker.
|
|
assert len(summary["contributing_hosts"]) == 1
|
|
|
|
|
|
def test_env_var_check_reports_missing_names():
|
|
result = check_env_vars(("DEFINITELY_NOT_SET_12345",))
|
|
|
|
assert result["passed"] is False
|
|
assert result["missing"] == ["DEFINITELY_NOT_SET_12345"]
|
|
|
|
|
|
def test_pod_identity_falls_back_outside_kubernetes(monkeypatch):
|
|
monkeypatch.delenv("DAGSTER_K8S_PIPELINE_RUN_NAMESPACE", raising=False)
|
|
|
|
assert describe_pod_identity()["namespace"] == "<not-in-kubernetes>"
|