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Oleg Zaytsev b1ed4a0a66 LabelNames API with matchers (#9083) ... * Push the matchers for LabelNames all the way into the index. NB This doesn't actually implement it in the index, just plumbs it through for now... Signed-off-by: Tom Wilkie <tom@grafana.com> * Hack it up. Does not work. Signed-off-by: Tom Wilkie <tom@grafana.com> * Revert changes I don't understand Can't see why do we need to hold a mutex on symbols, and the purpose of the LabelNamesFor method. Maybe I'll need to re-add this later. Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com> * Implement LabelNamesFor This method provides the label names that appear in the postings provided. We do that deeper than the label values because we know beforehand that most of the label names we'll be the same across different postings, and we don't want to go down an up looking up the same symbols for all different series. Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com> * Mutex on symbols should be unlocked However, I still don't understand why do we need a mutex here. Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com> * Fix head.LabelNamesFor Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com> * Implement mockIndex LabelNames with matchers Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com> * Nitpick on slice initialisation Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com> * Add tests for LabelNamesWithMatchers Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com> * Fix the mutex mess on head.LabelValues/LabelNames I still don't see why we need to grab that unrelated mutex, but at least now we're grabbing it consistently Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com> * Check error after iterating postings Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com> * Use the error from posting when there was en error in postings Co-authored-by: Ganesh Vernekar <15064823+codesome@users.noreply.github.com> Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com> * Update storage/interface.go comment Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com> Co-authored-by: Ganesh Vernekar <15064823+codesome@users.noreply.github.com> * Update tsdb/index/index.go comment Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com> Co-authored-by: Ganesh Vernekar <15064823+codesome@users.noreply.github.com> * Update tsdb/index/index.go wrapped error msg Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com> Co-authored-by: Ganesh Vernekar <15064823+codesome@users.noreply.github.com> * Update tsdb/index/index.go wrapped error msg Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com> Co-authored-by: Ganesh Vernekar <15064823+codesome@users.noreply.github.com> * Update tsdb/index/index.go warpped error msg Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com> Co-authored-by: Ganesh Vernekar <15064823+codesome@users.noreply.github.com> * Remove unneeded comment Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com> * Add testcases for LabelNames w/matchers in api.go Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com> * Use t.Cleanup() instead of defer in tests Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com> Co-authored-by: Tom Wilkie <tom@grafana.com> Co-authored-by: Ganesh Vernekar <15064823+codesome@users.noreply.github.com>		3 years ago
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v1	LabelNames API with matchers (#9083)	3 years ago