set the span id as parent id when errors happen in spans #669
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What does this pull request do?
If available, sets the error.parent_id to span.id
We need to handle a few different cases. When the exception
is captured inside the span, we can get the span from the
execution context.
More complicated is the case when the exception isn't handled
inside the span. In this case, the span is already ended when
the exception is handled, and not available in the execution
context. To work around this, we need to store the span ID
as an attribute of the exception value, where we can grab
it when the exception is captured later on. This isn't
supper pretty, but works.
Why is it important?
Using this information, the UI can show exceptions and logs
directly in the span object.