this fixes a bug where we are trying to export a dashboard that has chart
with unexpected missign queries. the root cause of these issues is uknown
but the fix here is to remove the strict requirement. a user can still
delete any unexpected cell if they deem necessary after the export.
This commit checks http.Request.Context().Err() to see if the context
has been canceled before writing an error code. It uses the non-standard
Nginx 499 error code for client disconnection.
notes on this commit. This commit was grueling ;-(. The task API is not a friendly
API to consume. There are a lot of non obvious things going on and almost every
one of them tripped me up. Things of note:
* the http.TaskService does not satisfy the influxdb.TaskService,
making it impossible to use as a dependency if tasks service gets
split out
* the APIs for create and update do not share common types. For example:
creating a task takes every field as a string, but in the update it is
taken as a options.Duration type. A step further and you'll notice that
create does not need an option to be provided, but the update does. Its
jarring trying to understand the indirection here. I struggled mightily
trying to make sense of it all with the indirection and differing types.
Made for a very difficult task (no pun intended) when it should have been
trivial. Opportunity here to fix these up and make this API more uniform
and remove unneccesary complexity like the options type.
* Nested IDs that get marshaled, are no bueno when you want to marshal a task
that does not have an ID in it, for either user/org/or self IDs. Its a challenge
just to do that.
* Lots of logs in the kv.Task portion where we hit errors and log and others where
we return. It isn't clear what is happening. The kv implementation is also very
procedural, and I found myself bouncing around like a ping pong ball trying to
make heads or tails of it.
* There is auth buried deep inside the kv.Task implementation that kept throwing me
off b/c it kept throwing errors, instead of warns. I assume, not sure if I'm
correct on this, but that the stuff being logged is determined inconsequential
to the task working. I had lots of errors from the auth buried in there, and hadn't
a clue what to make of it....
leaving these notes here as a look back at why working with tasks is so
difficult. This API can improve dramatically. I spent 5x the time trying
to figure out how to use the task API, in procedural calls, than I did
writing the business logic to consume it.... that's a scary realization ;-(
references: #17434
Johnny Steenbergen
Ben Johnson
Jonathan A. Sternberg