mirror of
https://github.com/prometheus/prometheus.git
synced 2025-11-04 10:21:02 +01:00
f1fc7d717a
This roughly comprises the following changes: - index target pools by job instead of scrape interval - make targets within a pool exchangable while preserving existing health state for targets - allow exchanging targets via HTTP API (PUT) - show target lists in /status (experimental, for own debug use)
103 lines
2.6 KiB
Go
103 lines
2.6 KiB
Go
// Copyright 2013 Prometheus Team
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package api
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import (
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"code.google.com/p/gorest"
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"encoding/json"
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"errors"
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"github.com/prometheus/prometheus/rules"
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"github.com/prometheus/prometheus/rules/ast"
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"log"
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"net/http"
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"sort"
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"time"
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)
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func (serv MetricsService) Query(Expr string, Json string) (result string) {
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exprNode, err := rules.LoadExprFromString(Expr)
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if err != nil {
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return ast.ErrorToJSON(err)
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}
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timestamp := serv.time.Now()
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rb := serv.ResponseBuilder()
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var format ast.OutputFormat
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if Json != "" {
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format = ast.JSON
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rb.SetContentType(gorest.Application_Json)
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} else {
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format = ast.TEXT
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rb.SetContentType(gorest.Text_Plain)
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}
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return ast.EvalToString(exprNode, ×tamp, format)
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}
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func (serv MetricsService) QueryRange(Expr string, End int64, Range int64, Step int64) string {
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exprNode, err := rules.LoadExprFromString(Expr)
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if err != nil {
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return ast.ErrorToJSON(err)
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}
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if exprNode.Type() != ast.VECTOR {
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return ast.ErrorToJSON(errors.New("Expression does not evaluate to vector type"))
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}
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rb := serv.ResponseBuilder()
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rb.SetContentType(gorest.Application_Json)
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if End == 0 {
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End = serv.time.Now().Unix()
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}
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if Step < 1 {
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Step = 1
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}
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if End-Range < 0 {
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Range = End
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}
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// Align the start to step "tick" boundary.
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End -= End % Step
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matrix := ast.EvalVectorRange(
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exprNode.(ast.VectorNode),
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time.Unix(End-Range, 0),
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time.Unix(End, 0),
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time.Duration(Step)*time.Second)
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sort.Sort(matrix)
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return ast.TypedValueToJSON(matrix, "matrix")
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}
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func (serv MetricsService) Metrics() string {
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metricNames, err := serv.appState.Persistence.GetAllMetricNames()
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rb := serv.ResponseBuilder()
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rb.SetContentType(gorest.Application_Json)
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if err != nil {
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log.Printf("Error loading metric names: %v", err)
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rb.SetResponseCode(http.StatusInternalServerError)
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return err.Error()
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}
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sort.Strings(metricNames)
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resultBytes, err := json.Marshal(metricNames)
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if err != nil {
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log.Printf("Error marshalling metric names: %v", err)
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rb.SetResponseCode(http.StatusInternalServerError)
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return err.Error()
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}
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return string(resultBytes)
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}
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