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George Robinson 19ebb079ba Alerting: Add limits and filters to Prometheus Rules API (#66627) ... This commit adds support for limits and filters to the Prometheus Rules API. Limits: It adds a number of limits to the Grafana flavour of the Prometheus Rules API: - `limit` limits the maximum number of Rule Groups returned - `limit_rules` limits the maximum number of rules per Rule Group - `limit_alerts` limits the maximum number of alerts per rule It sorts Rule Groups and rules within Rule Groups such that data in the response is stable across requests. It also returns summaries (totals) for all Rule Groups, individual Rule Groups and rules. Filters: Alerts can be filtered by state with the `state` query string. An example of an HTTP request asking for just firing alerts might be `/api/prometheus/grafana/api/v1/rules?state=alerting`. A request can filter by two or more states by adding additional `state` query strings to the URL. For example `?state=alerting&state=normal`. Like the alert list panel, the `firing`, `pending` and `normal` state are first compared against the state of each alert rule. All other states are ignored. If the alert rule matches then its alert instances are filtered against states once more. Alerts can also be filtered by labels using the `matcher` query string. Like `state`, multiple matchers can be provided by adding additional `matcher` query strings to the URL. The match expression should be parsed using existing regular expression and sent to the API as URL-encoded JSON in the format: { "name": "test", "value": "value1", "isRegex": false, "isEqual": true } The `isRegex` and `isEqual` options work as follows: | IsEqual | IsRegex | Operator | | ------- | -------- | -------- | | true | false | = | | true | true | =~ | | false | true | !~ | | false | false | != |		2 years ago
..
webtest	Caching: Refactor enterprise query caching middleware to a wire service (#65616)	2 years ago
binding.go	Security: Sync security changes on main (#45083)	3 years ago
binding_test.go	Add nil checks to HTTP request validation dispatch (#44371)	3 years ago
context.go	Alerting: Add limits and filters to Prometheus Rules API (#66627)	2 years ago
context_test.go	Server: Write internal server error on missing write (#57813)	3 years ago
macaron.go	Chore: Fix goimports grouping (#62423)	2 years ago
macaron.s	pkg/web: restrict handler types (#48495)	3 years ago
render.go	pkg/web: closure-style middlewares (#51238)	3 years ago
response_writer.go	pkg/web: detect Hijack() as chain write (#53466)	3 years ago
response_writer_test.go	Chore: Move remaining web framework code to pkg/web, remove macaron binding module (#43018)	3 years ago
router.go	pkg/web: closure-style middlewares (#51238)	3 years ago
tree.go	Chore: Use strings.ReplaceAll and preallocate containers (#58483)	3 years ago
web.go	Chore: Move remaining web framework code to pkg/web, remove macaron binding module (#43018)	3 years ago