core: Migrate to new OpenCensus method & status tags #5996
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Fixes grpc#5593 and supersedes grpc#5601 Now that census-instrumentation/opencensus-java#1854 has been merged & released as 0.21.0. We can start using the method & status tags. Background: Opencensus introduced new tags for status and method (census-instrumentation/opencensus-java#1115). The old views that used those tags were deprecated and new views were created that used the new tags. However grpc-java wasn't updated to use the new tags due to concern of breaking existing metrics. This resulted in the old views being deprecated while the new views were broken (goomics grpc#50). census-instrumentation/opencensus-java#1854 added a compatibility layer to opencensus that would remap new tags to old tags for old views. This should unblock grpc to switching to the new tags while allowing old views to still be populated. That commit was released as part of opencensus 0.21, which grpc currently uses
zhangkun83
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Jul 22, 2019
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LGTM except for a minor comment.
@songy23, can you confirm it's safe to switch to the new tags for both OSS and internal usages?
Yes it should be safe to do the switch. The new tags will be mapped properly to keep backwards-compatibility. |
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Thanks for the review, all feedback should be addressed. I'll be OOO for the rest of the week, so if anything else needs to change feel free to update the PR as needed |
zhangkun83
approved these changes
Jul 23, 2019
songy23
approved these changes
Jul 23, 2019
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I think this is ready to be merged |
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@zhangkun83 Can you add the label to trigger Kokoro? |
dapengzhang0
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Thank you |
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Fixes #5593 and supersedes #5601
Now that census-instrumentation/opencensus-java#1854 has been merged & released as 0.21.0. We can start using the method & status tags.
Background:
Opencensus introduced new tags for status and method (census-instrumentation/opencensus-java#1115). The old views that used those tags were deprecated and new views were created that used the new tags. However grpc-java wasn't updated to use the new tags due to concern of breaking existing metrics. This resulted in the old views being deprecated while the new views were broken (goomics #50).
census-instrumentation/opencensus-java#1854 added a compatibility layer to opencensus that would remap new tags to old tags for old views. This should unblock grpc to switching to the new tags while allowing old views to still be populated. That commit was released as part of opencensus 0.21, which grpc currently uses.