Retain Observable even during an Error Condition #532
Merged
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
The way this was setup previously, if an error occurred on the watchPosition observable, the observer was sent an error, which would have to be caught. This also has the side effect of completing the observable, which means anything down stream that would be subscribed would be unsubscribed and no longer receive updates.
Instead of using binding the error callback to
observer.error
this change just binds the error callback toobserver.next
and lets the subscriber filter out results that matchPositionError
rather than having to manage re-subscribing (which could just immediately fail and enter a loop of catch/retry)