prometheus: add error wrapping #631
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This PR adds error wrapping to the prometheus exporter. The added context should make it easier to follow the error path. This is a follow-up to open-telemetry#622
oncilla
requested review from
jmacd,
krnowak,
lizthegrey,
MrAlias,
paivagustavo,
rghetia and
tedsuo
as code owners
MrAlias
reviewed
Apr 9, 2020
MrAlias
approved these changes
Apr 9, 2020
jmacd
approved these changes
Apr 10, 2020
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This PR adds error wrapping to the prometheus exporter.
The added context should make it easier to follow the error path.
This is a follow-up to #622