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Add tsdb query functions with end duration parameter. #2310
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…upport end time Adds more general versions of Over() and Band() that support an eduration parameter to set the end time of the query, like with q() (#2297)
Member
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cmd/bosun/expr/expr_test.go needs a fmt but other than that I think this good |
added 4 commits
September 21, 2018 17:49
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Thanks, hadn't spotted the gofmt version differences! |
ghost
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This PR adds two functions for querying against openTSDB –
overQueryandbandQuery. These functions slightly generalise the existingoverandbandfunctions to include an end duration parametereduration, which specifies when a query should end, as is done withq. This enables queries for a historical distribution that does not include recent outliers – related discussion in #2297 .The existing
overandbandfunctions are changed to wrap the more general functions. The undocumented and very relatedshiftBandfunction was found during this work, and is added to the documentation.The third commit f61259a refactors the functions to reuse
bandTSDB, asshiftBandused this function to achieve comparable functionality toover.Tests were written based on the existing function of
over,bandandshiftBandto ensure same behaviour remains.