prometheus

Author	SHA1	Message	Date
Max Leonard Inden	1c96fbb992	Expose current Prometheus config via /status/config This PR adds the `/status/config` endpoint which exposes the currently loaded Prometheus config. This is the same config that is displayed on `/config` in the UI in YAML format. The response payload looks like such: ``` { "status": "success", "data": { "yaml": <CONFIG> } } ```	9 years ago
Brian Brazil	e5f94145b8	Drop series for federation if latest sample is stale.	9 years ago
Fabian Reinartz	8c768f2ca3	web: Fix federation for instance label	9 years ago
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.	9 years ago
Brian Brazil	dbb65846f1	Add unittest for federation external_labels behaviour	9 years ago
beorn7	717dd8adac	web: add more federation test scenarios	9 years ago
beorn7	784a8ad7c5	web: Inline httptest.NewRequest because it only exists in Go1.7+	9 years ago
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.	9 years ago