Ping broken on the gui

[datamel]

This appears with master cylc-uiserver, cylc-ui and cylc-flow installed.
Steps to reproduce:

• Start either cylc gui, jupyter-cylc or cylc hub - issue is present with all three.
• Play a workflow, useful to run it in --no-detach mode to see the error on screen.
• From the gui ping the workflow (with the ping button on the menu or from GraphIQL:

mutation {
  ping (workflows: ["workflow_name"]) {
    result
  }
}

You get a traceback error of....

Traceback (most recent call last):
  File "~/miniconda3/envs/cylc-8/lib/python3.7/site-packages/promise/promise.py", line 844, in handle_future_result
    resolve(future.result())
  File "~/cylc-flow/cylc/flowwork/graphql.py", line 426, in async_resolve
    return await next_(root, info, **args)
  File "~/cylc-uiserver/cylc/uiserver/authorise.py", line 416, in async_resolve
    return await next_(root, info, **args)
  File "~/miniconda3/envs/cylc-8/lib/python3.7/site-packages/promise/iterate_promise.py", line 10, in iterate_promise
    yield from promise.future  # type: ignore
  File "~/miniconda3/envs/cylc-8/lib/python3.7/site-packages/promise/promise.py", line 844, in handle_future_result
    resolve(future.result())
  File " ~/cylc-flow/cylc/flowwork/schema.py", line 1277, in mutator
    res = await resolvers.mutator(info, command, w_args, args)
  File " ~/cylc-uiserver/cylc/uiserver/resolvers.py", line 201, in mutator
    'graphql', w_ids, graphql_args
  File " ~/cylc-uiserver/cylc/uiserver/workflows_mgr.py", line 305, in multi_request
    for msg_core in list(val.values())[0].get('result')
graphql.error.located_error.GraphQLLocatedError: 'list' object has no attribute 'values'

[kinow]

@datamel I just tried calling it from GraphiQL and didn't get any error?

mutation {
  ping (workflows: ["workflow_name"]) {
    result
  }
}

Are you able to confirm the issue is still occurring, please?

Thanks!

[kinow]

Oh, broken indeed. Just needed to run that against a running workflow 🤦‍♂️

[datamel]

Oh, broken indeed. Just needed to run that against a running workflow 🤦‍♂️

Woops, sorry, I should have made that clearer!

[MetRonnie]

Closed by cylc/cylc-flow#4481, leaving the traceback issue open here: #271