prometheus

Author	SHA1	Message	Date
Brian Brazil	8cd5aff8fe	Send instance="" with federation if instance not set. This is needed for federating non-instance level metrics, so they don't end up with the instance label of the prometheus target. Also sort external labels, so label output order is consistent.	2017-03-30 06:48:48 +01:00
Brian Brazil	dbb65846f1	Add unittest for federation external_labels behaviour	2017-03-30 06:48:48 +01:00
beorn7	717dd8adac	web: add more federation test scenarios	2016-09-15 15:23:55 +02:00
beorn7	784a8ad7c5	web: Inline httptest.NewRequest because it only exists in Go1.7+	2016-09-15 15:06:36 +02:00
beorn7	39c4915401	federation: Collapse time series of the same name This will avoid duplicate MetricFamilies, thereby shrinking the size of the federation payload and also creating legal text format. Also, add unit tests for federation. They were also needed for the previous state of the code, but were missing.	2016-09-14 19:35:20 +02:00