Add Exact Aggregator #198
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Add Exact Aggregator #198
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reyang
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@@ Coverage Diff @@
## master #198 +/- ##
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+ Coverage 93.84% 93.99% +0.14%
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Files 109 111 +2
Lines 3512 3661 +149
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+ Hits 3296 3441 +145
- Misses 216 220 +4
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@reyang This PR is ready to merge, pending final approval :) |
ziqizh
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ziqizh
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This PR builds out SDK support for the Exact Aggregator which combines updates to metric instruments in meaningful values. Each aggregator stores exportable values in a vector format for ease of use further down the metrics data pipeline. All aggregators are derived from a base Aggregator abstract class which holds functions and data relevant to all aggregators. Additional data structures, such as a vector for histogram boundaries, are added on a case by case basis. Aggregators are dependent on the Metric Instruments API (pending approval in PR #161) and will not compile without those files. Additionally, these aggregators depend on the base Aggregator interface in PR #178.
Also included are tests for each aggregator which validate the correctness of aggregation in both single-threaded and concurrent situations.
Note: We templated aggregators to support a wider array of scalar types. This templating prevents us from using out of line declarations as we normally would. As a result, we left all implementation code in the header file. If there are any suggestions to remedy this we will gladly make the change.
This PR is part of a series of PRs to add a full implementation of metrics API and SDK support.