def _step_delete_secret_and_build_delta(
workflow: Workflow, step: Step, param: str
) -> Optional[clientside.Update]:
"""Write a new secret (or `None`) to `step`, or raise.
Return a `clientside.Update`, or `None` if the database is not modified.
Raise Workflow.DoesNotExist if the Workflow was deleted.
"""
with workflow.cooperative_lock(): # raises Workflow.DoesNotExist
try:
step.refresh_from_db()
except Step.DoesNotExist:
return None # no-op
if step.secrets.get(param) is None:
return None # no-op
step.secrets = dict(step.secrets) # shallow copy
del step.secrets[param]
step.save(update_fields=["secrets"])
return clientside.Update(
steps={step.id: clientside.StepUpdate(secrets=step.secret_metadata)}
)
def _step_set_secret_and_build_delta(
workflow: Workflow, step: Step, param: str,
secret: str) -> Optional[clientside.Update]:
"""Write a new secret to `step`, or raise.
Return a `clientside.Update`, or `None` if the database is not modified.
Raise Workflow.DoesNotExist if the Workflow was deleted.
"""
with workflow.cooperative_lock(): # raises Workflow.DoesNotExist
try:
step.refresh_from_db()
except Step.DoesNotExist:
return None # no-op
if step.secrets.get(param, {}).get("secret") == secret:
return None # no-op
try:
module_zipfile = MODULE_REGISTRY.latest(step.module_id_name)
except KeyError:
raise HandlerError(
f"BadRequest: ModuleZipfile {step.module_id_name} does not exist"
)
module_spec = module_zipfile.get_spec()
if not any(p.type == "secret" and p.secret_logic.provider == "string"
for p in module_spec.param_fields):
raise HandlerError(
"BadRequest: param is not a secret string parameter")
created_at = datetime.datetime.now()
created_at_str = (
created_at.strftime("%Y-%m-%dT%H:%M:%S") + "." +
created_at.strftime("%f")[0:3] # milliseconds
+ "Z")
step.secrets = {
**step.secrets,
param: {
"name": created_at_str,
"secret": secret
},
}
step.save(update_fields=["secrets"])
return clientside.Update(
steps={
step.id: clientside.StepUpdate(secrets=step.secret_metadata)
})
def _get_workflow_as_clientside_update(self) -> WorkflowUpdateData:
"""Return (clientside.Update, delta_id).
Raise Workflow.DoesNotExist if a race deletes the Workflow.
"""
with self._lookup_requested_workflow_with_auth_and_cooperative_lock(
) as workflow:
if self.scope["user"].is_anonymous:
user = None
else:
user_id = self.scope["user"].id
lock_user_by_id(user_id, for_write=False)
user = query_clientside_user(user_id)
update = clientside.Update(
user=user,
workflow=workflow.to_clientside(),
tabs={
tab.slug: tab.to_clientside()
for tab in workflow.live_tabs
},
steps={
step.id: step.to_clientside()
for step in Step.live_in_workflow(workflow)
},
)
return WorkflowUpdateData(update, workflow.last_delta_id)
def write_to_rendercache(
workflow: Workflow,
step: Step,
delta_id: int,
table: pa.Table,
errors: List[RenderError] = [],
json: Dict[str, Any] = {},
) -> None:
with arrow_table_context(table) as (path, table):
result = LoadedRenderResult(
path=path,
table=table,
columns=read_columns(table, full=False),
errors=errors,
json=json,
)
# use the caller-provided delta ID: no assertion
old_last_relevant_delta_id = step.last_relevant_delta_id
step.last_relevant_delta_id = delta_id
try:
cache_render_result(workflow, step, delta_id, result)
finally:
step.last_relevant_delta_id = old_last_relevant_delta_id
def locked_and_loaded_step(
workflow_id: int, step_slug: str
) -> ContextManager[Tuple[DbObjectCooperativeLock, Step, str]]:
"""Yield `WorkflowLock`, `step` and `file_param_id_name`.
SECURITY: the caller may want to test the Step's `file_upload_api_token`.
Raise UploadError(404, "workflow-not-found") on missing/deleted Workflow.
Raise UploadError(404, "step-not-found") on missing/deleted Step.
Raise UploadError(400, "step-module-deleted") on code-less Step.
Raise UploadError(400, "step-has-no-file-param") on a Step with no File param.
"""
try:
with Workflow.lookup_and_cooperative_lock(
id=workflow_id) as workflow_lock:
workflow = workflow_lock.workflow
try:
step = Step.live_in_workflow(workflow).get(slug=step_slug)
except Step.DoesNotExist:
raise UploadError(404, "step-not-found")
try:
module_zipfile = MODULE_REGISTRY.latest(step.module_id_name)
except KeyError:
raise UploadError(400, "step-module-deleted")
try:
file_param_id_name = next(
iter(pf.id_name
for pf in module_zipfile.get_spec().param_fields
if pf.type == "file"))
except StopIteration:
raise UploadError(400, "step-has-no-file-param")
yield workflow_lock, step, file_param_id_name
except Workflow.DoesNotExist:
raise UploadError(404, "workflow-not-found")
def _load_step_by_slug_sync(workflow: Workflow, step_slug: str) -> Step:
"""Return a Step or raise HandlerError."""
try:
return Step.live_in_workflow(workflow).get(slug=step_slug)
except Step.DoesNotExist:
raise HandlerError("DoesNotExist: Step not found")
def _load_step_by_id(workflow: Workflow, step_id: int) -> Step:
"""Return a Step or raises HandlerError."""
try:
return Step.live_in_workflow(workflow).get(id=step_id)
except Step.DoesNotExist:
raise HandlerError("DoesNotExist: Step not found")
def _do_set_file_upload_api_token(step: Step, api_token: Optional[str]):
step.file_upload_api_token = api_token
step.save(update_fields=["file_upload_api_token"])
def _do_set_notifications(scope, step: Step, notifications: bool):
step.notifications = notifications
step.save(update_fields=["notifications"])
def _do_set_collapsed(step: Step, is_collapsed: bool):
step.is_collapsed = is_collapsed
step.save(update_fields=["is_collapsed"])
def test_step_has_same_api_token(self):
step = Step(file_upload_api_token="good-api-token")
raise_if_api_token_is_wrong(step, "good-api-token")
def test_step_has_different_api_token(self):
step = Step(file_upload_api_token="good-api-token")
with self.assertRaisesRegex(
UploadError,
"UploadError<403,authorization-bearer-token-invalid>"):
raise_if_api_token_is_wrong(step, "bad-api-token")
def test_step_has_no_api_token(self):
step = Step(file_upload_api_token=None)
with self.assertRaisesRegex(UploadError,
"UploadError<403,step-has-no-api-token>"):
raise_if_api_token_is_wrong(step, "some-api-token")
def _workflow_has_notifications(workflow_id: int) -> bool:
"""Detect whether a workflow sends email on changes."""
return Step.live_in_workflow(workflow_id).filter(
notifications=True).exists()
