prometheus/cmd/promtool/main.go
Suraj Patil 7757794bb3
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[ENHANCEMENT] Promtool: Adding labels to time series while creating tsdb blocks (#14403)
* feat: #14402 - Adding labels to time series while creating tsdb blocks

Signed-off-by: Suraj Patil <patilsuraj767@gmail.com>
2024-08-28 12:12:24 +10:00

1304 lines
46 KiB
Go

// Copyright 2015 The Prometheus Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package main
import (
"bytes"
"context"
"encoding/json"
"errors"
"fmt"
"io"
"math"
"net/http"
"net/url"
"os"
"path/filepath"
"sort"
"strconv"
"strings"
"text/tabwriter"
"time"
"github.com/alecthomas/kingpin/v2"
"github.com/go-kit/log"
"github.com/google/pprof/profile"
"github.com/prometheus/client_golang/api"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/client_golang/prometheus/testutil/promlint"
config_util "github.com/prometheus/common/config"
"github.com/prometheus/common/model"
"github.com/prometheus/common/version"
"github.com/prometheus/exporter-toolkit/web"
"gopkg.in/yaml.v2"
dto "github.com/prometheus/client_model/go"
promconfig "github.com/prometheus/common/config"
"github.com/prometheus/common/expfmt"
"github.com/prometheus/prometheus/config"
"github.com/prometheus/prometheus/discovery"
"github.com/prometheus/prometheus/discovery/file"
"github.com/prometheus/prometheus/discovery/kubernetes"
"github.com/prometheus/prometheus/discovery/targetgroup"
"github.com/prometheus/prometheus/model/labels"
"github.com/prometheus/prometheus/model/rulefmt"
"github.com/prometheus/prometheus/notifier"
_ "github.com/prometheus/prometheus/plugins" // Register plugins.
"github.com/prometheus/prometheus/promql/parser"
"github.com/prometheus/prometheus/promql/promqltest"
"github.com/prometheus/prometheus/scrape"
"github.com/prometheus/prometheus/util/documentcli"
)
const (
successExitCode = 0
failureExitCode = 1
// Exit code 3 is used for "one or more lint issues detected".
lintErrExitCode = 3
lintOptionAll = "all"
lintOptionDuplicateRules = "duplicate-rules"
lintOptionNone = "none"
checkHealth = "/-/healthy"
checkReadiness = "/-/ready"
)
var lintOptions = []string{lintOptionAll, lintOptionDuplicateRules, lintOptionNone}
func main() {
var (
httpRoundTripper = api.DefaultRoundTripper
serverURL *url.URL
remoteWriteURL *url.URL
httpConfigFilePath string
)
ctx := context.Background()
app := kingpin.New(filepath.Base(os.Args[0]), "Tooling for the Prometheus monitoring system.").UsageWriter(os.Stdout)
app.Version(version.Print("promtool"))
app.HelpFlag.Short('h')
checkCmd := app.Command("check", "Check the resources for validity.")
experimental := app.Flag("experimental", "Enable experimental commands.").Bool()
sdCheckCmd := checkCmd.Command("service-discovery", "Perform service discovery for the given job name and report the results, including relabeling.")
sdConfigFile := sdCheckCmd.Arg("config-file", "The prometheus config file.").Required().ExistingFile()
sdJobName := sdCheckCmd.Arg("job", "The job to run service discovery for.").Required().String()
sdTimeout := sdCheckCmd.Flag("timeout", "The time to wait for discovery results.").Default("30s").Duration()
checkConfigCmd := checkCmd.Command("config", "Check if the config files are valid or not.")
configFiles := checkConfigCmd.Arg(
"config-files",
"The config files to check.",
).Required().ExistingFiles()
checkConfigSyntaxOnly := checkConfigCmd.Flag("syntax-only", "Only check the config file syntax, ignoring file and content validation referenced in the config").Bool()
checkConfigLint := checkConfigCmd.Flag(
"lint",
"Linting checks to apply to the rules specified in the config. Available options are: "+strings.Join(lintOptions, ", ")+". Use --lint=none to disable linting",
).Default(lintOptionDuplicateRules).String()
checkConfigLintFatal := checkConfigCmd.Flag(
"lint-fatal",
"Make lint errors exit with exit code 3.").Default("false").Bool()
checkWebConfigCmd := checkCmd.Command("web-config", "Check if the web config files are valid or not.")
webConfigFiles := checkWebConfigCmd.Arg(
"web-config-files",
"The config files to check.",
).Required().ExistingFiles()
checkServerHealthCmd := checkCmd.Command("healthy", "Check if the Prometheus server is healthy.")
checkServerHealthCmd.Flag("http.config.file", "HTTP client configuration file for promtool to connect to Prometheus.").PlaceHolder("<filename>").ExistingFileVar(&httpConfigFilePath)
checkServerHealthCmd.Flag("url", "The URL for the Prometheus server.").Default("http://localhost:9090").URLVar(&serverURL)
checkServerReadyCmd := checkCmd.Command("ready", "Check if the Prometheus server is ready.")
checkServerReadyCmd.Flag("http.config.file", "HTTP client configuration file for promtool to connect to Prometheus.").PlaceHolder("<filename>").ExistingFileVar(&httpConfigFilePath)
checkServerReadyCmd.Flag("url", "The URL for the Prometheus server.").Default("http://localhost:9090").URLVar(&serverURL)
checkRulesCmd := checkCmd.Command("rules", "Check if the rule files are valid or not.")
ruleFiles := checkRulesCmd.Arg(
"rule-files",
"The rule files to check, default is read from standard input.",
).ExistingFiles()
checkRulesLint := checkRulesCmd.Flag(
"lint",
"Linting checks to apply. Available options are: "+strings.Join(lintOptions, ", ")+". Use --lint=none to disable linting",
).Default(lintOptionDuplicateRules).String()
checkRulesLintFatal := checkRulesCmd.Flag(
"lint-fatal",
"Make lint errors exit with exit code 3.").Default("false").Bool()
checkMetricsCmd := checkCmd.Command("metrics", checkMetricsUsage)
checkMetricsExtended := checkCmd.Flag("extended", "Print extended information related to the cardinality of the metrics.").Bool()
agentMode := checkConfigCmd.Flag("agent", "Check config file for Prometheus in Agent mode.").Bool()
queryCmd := app.Command("query", "Run query against a Prometheus server.")
queryCmdFmt := queryCmd.Flag("format", "Output format of the query.").Short('o').Default("promql").Enum("promql", "json")
queryCmd.Flag("http.config.file", "HTTP client configuration file for promtool to connect to Prometheus.").PlaceHolder("<filename>").ExistingFileVar(&httpConfigFilePath)
queryInstantCmd := queryCmd.Command("instant", "Run instant query.")
queryInstantCmd.Arg("server", "Prometheus server to query.").Required().URLVar(&serverURL)
queryInstantExpr := queryInstantCmd.Arg("expr", "PromQL query expression.").Required().String()
queryInstantTime := queryInstantCmd.Flag("time", "Query evaluation time (RFC3339 or Unix timestamp).").String()
queryRangeCmd := queryCmd.Command("range", "Run range query.")
queryRangeCmd.Arg("server", "Prometheus server to query.").Required().URLVar(&serverURL)
queryRangeExpr := queryRangeCmd.Arg("expr", "PromQL query expression.").Required().String()
queryRangeHeaders := queryRangeCmd.Flag("header", "Extra headers to send to server.").StringMap()
queryRangeBegin := queryRangeCmd.Flag("start", "Query range start time (RFC3339 or Unix timestamp).").String()
queryRangeEnd := queryRangeCmd.Flag("end", "Query range end time (RFC3339 or Unix timestamp).").String()
queryRangeStep := queryRangeCmd.Flag("step", "Query step size (duration).").Duration()
querySeriesCmd := queryCmd.Command("series", "Run series query.")
querySeriesCmd.Arg("server", "Prometheus server to query.").Required().URLVar(&serverURL)
querySeriesMatch := querySeriesCmd.Flag("match", "Series selector. Can be specified multiple times.").Required().Strings()
querySeriesBegin := querySeriesCmd.Flag("start", "Start time (RFC3339 or Unix timestamp).").String()
querySeriesEnd := querySeriesCmd.Flag("end", "End time (RFC3339 or Unix timestamp).").String()
debugCmd := app.Command("debug", "Fetch debug information.")
debugPprofCmd := debugCmd.Command("pprof", "Fetch profiling debug information.")
debugPprofServer := debugPprofCmd.Arg("server", "Prometheus server to get pprof files from.").Required().String()
debugMetricsCmd := debugCmd.Command("metrics", "Fetch metrics debug information.")
debugMetricsServer := debugMetricsCmd.Arg("server", "Prometheus server to get metrics from.").Required().String()
debugAllCmd := debugCmd.Command("all", "Fetch all debug information.")
debugAllServer := debugAllCmd.Arg("server", "Prometheus server to get all debug information from.").Required().String()
queryLabelsCmd := queryCmd.Command("labels", "Run labels query.")
queryLabelsCmd.Arg("server", "Prometheus server to query.").Required().URLVar(&serverURL)
queryLabelsName := queryLabelsCmd.Arg("name", "Label name to provide label values for.").Required().String()
queryLabelsBegin := queryLabelsCmd.Flag("start", "Start time (RFC3339 or Unix timestamp).").String()
queryLabelsEnd := queryLabelsCmd.Flag("end", "End time (RFC3339 or Unix timestamp).").String()
queryLabelsMatch := queryLabelsCmd.Flag("match", "Series selector. Can be specified multiple times.").Strings()
queryAnalyzeCfg := &QueryAnalyzeConfig{}
queryAnalyzeCmd := queryCmd.Command("analyze", "Run queries against your Prometheus to analyze the usage pattern of certain metrics.")
queryAnalyzeCmd.Flag("server", "Prometheus server to query.").Required().URLVar(&serverURL)
queryAnalyzeCmd.Flag("type", "Type of metric: histogram.").Required().StringVar(&queryAnalyzeCfg.metricType)
queryAnalyzeCmd.Flag("duration", "Time frame to analyze.").Default("1h").DurationVar(&queryAnalyzeCfg.duration)
queryAnalyzeCmd.Flag("time", "Query time (RFC3339 or Unix timestamp), defaults to now.").StringVar(&queryAnalyzeCfg.time)
queryAnalyzeCmd.Flag("match", "Series selector. Can be specified multiple times.").Required().StringsVar(&queryAnalyzeCfg.matchers)
pushCmd := app.Command("push", "Push to a Prometheus server.")
pushCmd.Flag("http.config.file", "HTTP client configuration file for promtool to connect to Prometheus.").PlaceHolder("<filename>").ExistingFileVar(&httpConfigFilePath)
pushMetricsCmd := pushCmd.Command("metrics", "Push metrics to a prometheus remote write (for testing purpose only).")
pushMetricsCmd.Arg("remote-write-url", "Prometheus remote write url to push metrics.").Required().URLVar(&remoteWriteURL)
metricFiles := pushMetricsCmd.Arg(
"metric-files",
"The metric files to push, default is read from standard input.",
).ExistingFiles()
pushMetricsLabels := pushMetricsCmd.Flag("label", "Label to attach to metrics. Can be specified multiple times.").Default("job=promtool").StringMap()
pushMetricsTimeout := pushMetricsCmd.Flag("timeout", "The time to wait for pushing metrics.").Default("30s").Duration()
pushMetricsHeaders := pushMetricsCmd.Flag("header", "Prometheus remote write header.").StringMap()
testCmd := app.Command("test", "Unit testing.")
junitOutFile := testCmd.Flag("junit", "File path to store JUnit XML test results.").OpenFile(os.O_CREATE|os.O_WRONLY|os.O_TRUNC, 0o644)
testRulesCmd := testCmd.Command("rules", "Unit tests for rules.")
testRulesRun := testRulesCmd.Flag("run", "If set, will only run test groups whose names match the regular expression. Can be specified multiple times.").Strings()
testRulesFiles := testRulesCmd.Arg(
"test-rule-file",
"The unit test file.",
).Required().ExistingFiles()
testRulesDiff := testRulesCmd.Flag("diff", "[Experimental] Print colored differential output between expected & received output.").Default("false").Bool()
defaultDBPath := "data/"
tsdbCmd := app.Command("tsdb", "Run tsdb commands.")
tsdbBenchCmd := tsdbCmd.Command("bench", "Run benchmarks.")
tsdbBenchWriteCmd := tsdbBenchCmd.Command("write", "Run a write performance benchmark.")
benchWriteOutPath := tsdbBenchWriteCmd.Flag("out", "Set the output path.").Default("benchout").String()
benchWriteNumMetrics := tsdbBenchWriteCmd.Flag("metrics", "Number of metrics to read.").Default("10000").Int()
benchWriteNumScrapes := tsdbBenchWriteCmd.Flag("scrapes", "Number of scrapes to simulate.").Default("3000").Int()
benchSamplesFile := tsdbBenchWriteCmd.Arg("file", "Input file with samples data, default is ("+filepath.Join("..", "..", "tsdb", "testdata", "20kseries.json")+").").Default(filepath.Join("..", "..", "tsdb", "testdata", "20kseries.json")).String()
tsdbAnalyzeCmd := tsdbCmd.Command("analyze", "Analyze churn, label pair cardinality and compaction efficiency.")
analyzePath := tsdbAnalyzeCmd.Arg("db path", "Database path (default is "+defaultDBPath+").").Default(defaultDBPath).String()
analyzeBlockID := tsdbAnalyzeCmd.Arg("block id", "Block to analyze (default is the last block).").String()
analyzeLimit := tsdbAnalyzeCmd.Flag("limit", "How many items to show in each list.").Default("20").Int()
analyzeRunExtended := tsdbAnalyzeCmd.Flag("extended", "Run extended analysis.").Bool()
analyzeMatchers := tsdbAnalyzeCmd.Flag("match", "Series selector to analyze. Only 1 set of matchers is supported now.").String()
tsdbListCmd := tsdbCmd.Command("list", "List tsdb blocks.")
listHumanReadable := tsdbListCmd.Flag("human-readable", "Print human readable values.").Short('r').Bool()
listPath := tsdbListCmd.Arg("db path", "Database path (default is "+defaultDBPath+").").Default(defaultDBPath).String()
tsdbDumpCmd := tsdbCmd.Command("dump", "Dump samples from a TSDB.")
dumpPath := tsdbDumpCmd.Arg("db path", "Database path (default is "+defaultDBPath+").").Default(defaultDBPath).String()
dumpSandboxDirRoot := tsdbDumpCmd.Flag("sandbox-dir-root", "Root directory where a sandbox directory would be created in case WAL replay generates chunks. The sandbox directory is cleaned up at the end.").Default(defaultDBPath).String()
dumpMinTime := tsdbDumpCmd.Flag("min-time", "Minimum timestamp to dump.").Default(strconv.FormatInt(math.MinInt64, 10)).Int64()
dumpMaxTime := tsdbDumpCmd.Flag("max-time", "Maximum timestamp to dump.").Default(strconv.FormatInt(math.MaxInt64, 10)).Int64()
dumpMatch := tsdbDumpCmd.Flag("match", "Series selector. Can be specified multiple times.").Default("{__name__=~'(?s:.*)'}").Strings()
tsdbDumpOpenMetricsCmd := tsdbCmd.Command("dump-openmetrics", "[Experimental] Dump samples from a TSDB into OpenMetrics text format, excluding native histograms and staleness markers, which are not representable in OpenMetrics.")
dumpOpenMetricsPath := tsdbDumpOpenMetricsCmd.Arg("db path", "Database path (default is "+defaultDBPath+").").Default(defaultDBPath).String()
dumpOpenMetricsSandboxDirRoot := tsdbDumpOpenMetricsCmd.Flag("sandbox-dir-root", "Root directory where a sandbox directory would be created in case WAL replay generates chunks. The sandbox directory is cleaned up at the end.").Default(defaultDBPath).String()
dumpOpenMetricsMinTime := tsdbDumpOpenMetricsCmd.Flag("min-time", "Minimum timestamp to dump.").Default(strconv.FormatInt(math.MinInt64, 10)).Int64()
dumpOpenMetricsMaxTime := tsdbDumpOpenMetricsCmd.Flag("max-time", "Maximum timestamp to dump.").Default(strconv.FormatInt(math.MaxInt64, 10)).Int64()
dumpOpenMetricsMatch := tsdbDumpOpenMetricsCmd.Flag("match", "Series selector. Can be specified multiple times.").Default("{__name__=~'(?s:.*)'}").Strings()
importCmd := tsdbCmd.Command("create-blocks-from", "[Experimental] Import samples from input and produce TSDB blocks. Please refer to the storage docs for more details.")
importHumanReadable := importCmd.Flag("human-readable", "Print human readable values.").Short('r').Bool()
importQuiet := importCmd.Flag("quiet", "Do not print created blocks.").Short('q').Bool()
maxBlockDuration := importCmd.Flag("max-block-duration", "Maximum duration created blocks may span. Anything less than 2h is ignored.").Hidden().PlaceHolder("<duration>").Duration()
openMetricsImportCmd := importCmd.Command("openmetrics", "Import samples from OpenMetrics input and produce TSDB blocks. Please refer to the storage docs for more details.")
openMetricsLabels := openMetricsImportCmd.Flag("label", "Label to attach to metrics. Can be specified multiple times. Example --label=label_name=label_value").StringMap()
importFilePath := openMetricsImportCmd.Arg("input file", "OpenMetrics file to read samples from.").Required().String()
importDBPath := openMetricsImportCmd.Arg("output directory", "Output directory for generated blocks.").Default(defaultDBPath).String()
importRulesCmd := importCmd.Command("rules", "Create blocks of data for new recording rules.")
importRulesCmd.Flag("http.config.file", "HTTP client configuration file for promtool to connect to Prometheus.").PlaceHolder("<filename>").ExistingFileVar(&httpConfigFilePath)
importRulesCmd.Flag("url", "The URL for the Prometheus API with the data where the rule will be backfilled from.").Default("http://localhost:9090").URLVar(&serverURL)
importRulesStart := importRulesCmd.Flag("start", "The time to start backfilling the new rule from. Must be a RFC3339 formatted date or Unix timestamp. Required.").
Required().String()
importRulesEnd := importRulesCmd.Flag("end", "If an end time is provided, all recording rules in the rule files provided will be backfilled to the end time. Default will backfill up to 3 hours ago. Must be a RFC3339 formatted date or Unix timestamp.").String()
importRulesOutputDir := importRulesCmd.Flag("output-dir", "Output directory for generated blocks.").Default("data/").String()
importRulesEvalInterval := importRulesCmd.Flag("eval-interval", "How frequently to evaluate rules when backfilling if a value is not set in the recording rule files.").
Default("60s").Duration()
importRulesFiles := importRulesCmd.Arg(
"rule-files",
"A list of one or more files containing recording rules to be backfilled. All recording rules listed in the files will be backfilled. Alerting rules are not evaluated.",
).Required().ExistingFiles()
promQLCmd := app.Command("promql", "PromQL formatting and editing. Requires the --experimental flag.")
promQLFormatCmd := promQLCmd.Command("format", "Format PromQL query to pretty printed form.")
promQLFormatQuery := promQLFormatCmd.Arg("query", "PromQL query.").Required().String()
promQLLabelsCmd := promQLCmd.Command("label-matchers", "Edit label matchers contained within an existing PromQL query.")
promQLLabelsSetCmd := promQLLabelsCmd.Command("set", "Set a label matcher in the query.")
promQLLabelsSetType := promQLLabelsSetCmd.Flag("type", "Type of the label matcher to set.").Short('t').Default("=").Enum("=", "!=", "=~", "!~")
promQLLabelsSetQuery := promQLLabelsSetCmd.Arg("query", "PromQL query.").Required().String()
promQLLabelsSetName := promQLLabelsSetCmd.Arg("name", "Name of the label matcher to set.").Required().String()
promQLLabelsSetValue := promQLLabelsSetCmd.Arg("value", "Value of the label matcher to set.").Required().String()
promQLLabelsDeleteCmd := promQLLabelsCmd.Command("delete", "Delete a label from the query.")
promQLLabelsDeleteQuery := promQLLabelsDeleteCmd.Arg("query", "PromQL query.").Required().String()
promQLLabelsDeleteName := promQLLabelsDeleteCmd.Arg("name", "Name of the label to delete.").Required().String()
featureList := app.Flag("enable-feature", "Comma separated feature names to enable (only PromQL related and no-default-scrape-port). See https://prometheus.io/docs/prometheus/latest/feature_flags/ for the options and more details.").Default("").Strings()
documentationCmd := app.Command("write-documentation", "Generate command line documentation. Internal use.").Hidden()
parsedCmd := kingpin.MustParse(app.Parse(os.Args[1:]))
var p printer
switch *queryCmdFmt {
case "json":
p = &jsonPrinter{}
case "promql":
p = &promqlPrinter{}
}
if httpConfigFilePath != "" {
if serverURL != nil && serverURL.User.Username() != "" {
kingpin.Fatalf("Cannot set base auth in the server URL and use a http.config.file at the same time")
}
var err error
httpConfig, _, err := config_util.LoadHTTPConfigFile(httpConfigFilePath)
if err != nil {
kingpin.Fatalf("Failed to load HTTP config file: %v", err)
}
httpRoundTripper, err = promconfig.NewRoundTripperFromConfig(*httpConfig, "promtool", config_util.WithUserAgent("promtool/"+version.Version))
if err != nil {
kingpin.Fatalf("Failed to create a new HTTP round tripper: %v", err)
}
}
var noDefaultScrapePort bool
for _, f := range *featureList {
opts := strings.Split(f, ",")
for _, o := range opts {
switch o {
case "no-default-scrape-port":
noDefaultScrapePort = true
case "":
continue
case "promql-at-modifier", "promql-negative-offset":
fmt.Printf(" WARNING: Option for --enable-feature is a no-op after promotion to a stable feature: %q\n", o)
default:
fmt.Printf(" WARNING: Unknown option for --enable-feature: %q\n", o)
}
}
}
switch parsedCmd {
case sdCheckCmd.FullCommand():
os.Exit(CheckSD(*sdConfigFile, *sdJobName, *sdTimeout, noDefaultScrapePort, prometheus.DefaultRegisterer))
case checkConfigCmd.FullCommand():
os.Exit(CheckConfig(*agentMode, *checkConfigSyntaxOnly, newLintConfig(*checkConfigLint, *checkConfigLintFatal), *configFiles...))
case checkServerHealthCmd.FullCommand():
os.Exit(checkErr(CheckServerStatus(serverURL, checkHealth, httpRoundTripper)))
case checkServerReadyCmd.FullCommand():
os.Exit(checkErr(CheckServerStatus(serverURL, checkReadiness, httpRoundTripper)))
case checkWebConfigCmd.FullCommand():
os.Exit(CheckWebConfig(*webConfigFiles...))
case checkRulesCmd.FullCommand():
os.Exit(CheckRules(newLintConfig(*checkRulesLint, *checkRulesLintFatal), *ruleFiles...))
case checkMetricsCmd.FullCommand():
os.Exit(CheckMetrics(*checkMetricsExtended))
case pushMetricsCmd.FullCommand():
os.Exit(PushMetrics(remoteWriteURL, httpRoundTripper, *pushMetricsHeaders, *pushMetricsTimeout, *pushMetricsLabels, *metricFiles...))
case queryInstantCmd.FullCommand():
os.Exit(QueryInstant(serverURL, httpRoundTripper, *queryInstantExpr, *queryInstantTime, p))
case queryRangeCmd.FullCommand():
os.Exit(QueryRange(serverURL, httpRoundTripper, *queryRangeHeaders, *queryRangeExpr, *queryRangeBegin, *queryRangeEnd, *queryRangeStep, p))
case querySeriesCmd.FullCommand():
os.Exit(QuerySeries(serverURL, httpRoundTripper, *querySeriesMatch, *querySeriesBegin, *querySeriesEnd, p))
case debugPprofCmd.FullCommand():
os.Exit(debugPprof(*debugPprofServer))
case debugMetricsCmd.FullCommand():
os.Exit(debugMetrics(*debugMetricsServer))
case debugAllCmd.FullCommand():
os.Exit(debugAll(*debugAllServer))
case queryLabelsCmd.FullCommand():
os.Exit(QueryLabels(serverURL, httpRoundTripper, *queryLabelsMatch, *queryLabelsName, *queryLabelsBegin, *queryLabelsEnd, p))
case testRulesCmd.FullCommand():
results := io.Discard
if *junitOutFile != nil {
results = *junitOutFile
}
os.Exit(RulesUnitTestResult(results,
promqltest.LazyLoaderOpts{
EnableAtModifier: true,
EnableNegativeOffset: true,
},
*testRulesRun,
*testRulesDiff,
*testRulesFiles...),
)
case tsdbBenchWriteCmd.FullCommand():
os.Exit(checkErr(benchmarkWrite(*benchWriteOutPath, *benchSamplesFile, *benchWriteNumMetrics, *benchWriteNumScrapes)))
case tsdbAnalyzeCmd.FullCommand():
os.Exit(checkErr(analyzeBlock(ctx, *analyzePath, *analyzeBlockID, *analyzeLimit, *analyzeRunExtended, *analyzeMatchers)))
case tsdbListCmd.FullCommand():
os.Exit(checkErr(listBlocks(*listPath, *listHumanReadable)))
case tsdbDumpCmd.FullCommand():
os.Exit(checkErr(dumpSamples(ctx, *dumpPath, *dumpSandboxDirRoot, *dumpMinTime, *dumpMaxTime, *dumpMatch, formatSeriesSet)))
case tsdbDumpOpenMetricsCmd.FullCommand():
os.Exit(checkErr(dumpSamples(ctx, *dumpOpenMetricsPath, *dumpOpenMetricsSandboxDirRoot, *dumpOpenMetricsMinTime, *dumpOpenMetricsMaxTime, *dumpOpenMetricsMatch, formatSeriesSetOpenMetrics)))
// TODO(aSquare14): Work on adding support for custom block size.
case openMetricsImportCmd.FullCommand():
os.Exit(backfillOpenMetrics(*importFilePath, *importDBPath, *importHumanReadable, *importQuiet, *maxBlockDuration, *openMetricsLabels))
case importRulesCmd.FullCommand():
os.Exit(checkErr(importRules(serverURL, httpRoundTripper, *importRulesStart, *importRulesEnd, *importRulesOutputDir, *importRulesEvalInterval, *maxBlockDuration, *importRulesFiles...)))
case queryAnalyzeCmd.FullCommand():
os.Exit(checkErr(queryAnalyzeCfg.run(serverURL, httpRoundTripper)))
case documentationCmd.FullCommand():
os.Exit(checkErr(documentcli.GenerateMarkdown(app.Model(), os.Stdout)))
case promQLFormatCmd.FullCommand():
checkExperimental(*experimental)
os.Exit(checkErr(formatPromQL(*promQLFormatQuery)))
case promQLLabelsSetCmd.FullCommand():
checkExperimental(*experimental)
os.Exit(checkErr(labelsSetPromQL(*promQLLabelsSetQuery, *promQLLabelsSetType, *promQLLabelsSetName, *promQLLabelsSetValue)))
case promQLLabelsDeleteCmd.FullCommand():
checkExperimental(*experimental)
os.Exit(checkErr(labelsDeletePromQL(*promQLLabelsDeleteQuery, *promQLLabelsDeleteName)))
}
}
func checkExperimental(f bool) {
if !f {
fmt.Fprintln(os.Stderr, "This command is experimental and requires the --experimental flag to be set.")
os.Exit(1)
}
}
var errLint = fmt.Errorf("lint error")
type lintConfig struct {
all bool
duplicateRules bool
fatal bool
}
func newLintConfig(stringVal string, fatal bool) lintConfig {
items := strings.Split(stringVal, ",")
ls := lintConfig{
fatal: fatal,
}
for _, setting := range items {
switch setting {
case lintOptionAll:
ls.all = true
case lintOptionDuplicateRules:
ls.duplicateRules = true
case lintOptionNone:
default:
fmt.Printf("WARNING: unknown lint option %s\n", setting)
}
}
return ls
}
func (ls lintConfig) lintDuplicateRules() bool {
return ls.all || ls.duplicateRules
}
// CheckServerStatus - healthy & ready.
func CheckServerStatus(serverURL *url.URL, checkEndpoint string, roundTripper http.RoundTripper) error {
if serverURL.Scheme == "" {
serverURL.Scheme = "http"
}
config := api.Config{
Address: serverURL.String() + checkEndpoint,
RoundTripper: roundTripper,
}
// Create new client.
c, err := api.NewClient(config)
if err != nil {
fmt.Fprintln(os.Stderr, "error creating API client:", err)
return err
}
request, err := http.NewRequest(http.MethodGet, config.Address, nil)
if err != nil {
return err
}
ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
defer cancel()
response, dataBytes, err := c.Do(ctx, request)
if err != nil {
return err
}
if response.StatusCode != http.StatusOK {
return fmt.Errorf("check failed: URL=%s, status=%d", serverURL, response.StatusCode)
}
fmt.Fprintln(os.Stderr, " SUCCESS: ", string(dataBytes))
return nil
}
// CheckConfig validates configuration files.
func CheckConfig(agentMode, checkSyntaxOnly bool, lintSettings lintConfig, files ...string) int {
failed := false
hasErrors := false
for _, f := range files {
ruleFiles, err := checkConfig(agentMode, f, checkSyntaxOnly)
if err != nil {
fmt.Fprintln(os.Stderr, " FAILED:", err)
hasErrors = true
failed = true
} else {
if len(ruleFiles) > 0 {
fmt.Printf(" SUCCESS: %d rule files found\n", len(ruleFiles))
}
fmt.Printf(" SUCCESS: %s is valid prometheus config file syntax\n", f)
}
fmt.Println()
rulesFailed, rulesHasErrors := checkRules(ruleFiles, lintSettings)
if rulesFailed {
failed = rulesFailed
}
if rulesHasErrors {
hasErrors = rulesHasErrors
}
}
if failed && hasErrors {
return failureExitCode
}
if failed && lintSettings.fatal {
return lintErrExitCode
}
return successExitCode
}
// CheckWebConfig validates web configuration files.
func CheckWebConfig(files ...string) int {
failed := false
for _, f := range files {
if err := web.Validate(f); err != nil {
fmt.Fprintln(os.Stderr, f, "FAILED:", err)
failed = true
continue
}
fmt.Fprintln(os.Stderr, f, "SUCCESS")
}
if failed {
return failureExitCode
}
return successExitCode
}
func checkFileExists(fn string) error {
// Nothing set, nothing to error on.
if fn == "" {
return nil
}
_, err := os.Stat(fn)
return err
}
func checkConfig(agentMode bool, filename string, checkSyntaxOnly bool) ([]string, error) {
fmt.Println("Checking", filename)
cfg, err := config.LoadFile(filename, agentMode, false, log.NewNopLogger())
if err != nil {
return nil, err
}
var ruleFiles []string
if !checkSyntaxOnly {
for _, rf := range cfg.RuleFiles {
rfs, err := filepath.Glob(rf)
if err != nil {
return nil, err
}
// If an explicit file was given, error if it is not accessible.
if !strings.Contains(rf, "*") {
if len(rfs) == 0 {
return nil, fmt.Errorf("%q does not point to an existing file", rf)
}
if err := checkFileExists(rfs[0]); err != nil {
return nil, fmt.Errorf("error checking rule file %q: %w", rfs[0], err)
}
}
ruleFiles = append(ruleFiles, rfs...)
}
}
var scfgs []*config.ScrapeConfig
if checkSyntaxOnly {
scfgs = cfg.ScrapeConfigs
} else {
var err error
scfgs, err = cfg.GetScrapeConfigs()
if err != nil {
return nil, fmt.Errorf("error loading scrape configs: %w", err)
}
}
for _, scfg := range scfgs {
if !checkSyntaxOnly && scfg.HTTPClientConfig.Authorization != nil {
if err := checkFileExists(scfg.HTTPClientConfig.Authorization.CredentialsFile); err != nil {
return nil, fmt.Errorf("error checking authorization credentials or bearer token file %q: %w", scfg.HTTPClientConfig.Authorization.CredentialsFile, err)
}
}
if err := checkTLSConfig(scfg.HTTPClientConfig.TLSConfig, checkSyntaxOnly); err != nil {
return nil, err
}
for _, c := range scfg.ServiceDiscoveryConfigs {
switch c := c.(type) {
case *kubernetes.SDConfig:
if err := checkTLSConfig(c.HTTPClientConfig.TLSConfig, checkSyntaxOnly); err != nil {
return nil, err
}
case *file.SDConfig:
if checkSyntaxOnly {
break
}
for _, file := range c.Files {
files, err := filepath.Glob(file)
if err != nil {
return nil, err
}
if len(files) != 0 {
for _, f := range files {
var targetGroups []*targetgroup.Group
targetGroups, err = checkSDFile(f)
if err != nil {
return nil, fmt.Errorf("checking SD file %q: %w", file, err)
}
if err := checkTargetGroupsForScrapeConfig(targetGroups, scfg); err != nil {
return nil, err
}
}
continue
}
fmt.Printf(" WARNING: file %q for file_sd in scrape job %q does not exist\n", file, scfg.JobName)
}
case discovery.StaticConfig:
if err := checkTargetGroupsForScrapeConfig(c, scfg); err != nil {
return nil, err
}
}
}
}
alertConfig := cfg.AlertingConfig
for _, amcfg := range alertConfig.AlertmanagerConfigs {
for _, c := range amcfg.ServiceDiscoveryConfigs {
switch c := c.(type) {
case *file.SDConfig:
if checkSyntaxOnly {
break
}
for _, file := range c.Files {
files, err := filepath.Glob(file)
if err != nil {
return nil, err
}
if len(files) != 0 {
for _, f := range files {
var targetGroups []*targetgroup.Group
targetGroups, err = checkSDFile(f)
if err != nil {
return nil, fmt.Errorf("checking SD file %q: %w", file, err)
}
if err := checkTargetGroupsForAlertmanager(targetGroups, amcfg); err != nil {
return nil, err
}
}
continue
}
fmt.Printf(" WARNING: file %q for file_sd in alertmanager config does not exist\n", file)
}
case discovery.StaticConfig:
if err := checkTargetGroupsForAlertmanager(c, amcfg); err != nil {
return nil, err
}
}
}
}
return ruleFiles, nil
}
func checkTLSConfig(tlsConfig config_util.TLSConfig, checkSyntaxOnly bool) error {
if len(tlsConfig.CertFile) > 0 && len(tlsConfig.KeyFile) == 0 {
return fmt.Errorf("client cert file %q specified without client key file", tlsConfig.CertFile)
}
if len(tlsConfig.KeyFile) > 0 && len(tlsConfig.CertFile) == 0 {
return fmt.Errorf("client key file %q specified without client cert file", tlsConfig.KeyFile)
}
if checkSyntaxOnly {
return nil
}
if err := checkFileExists(tlsConfig.CertFile); err != nil {
return fmt.Errorf("error checking client cert file %q: %w", tlsConfig.CertFile, err)
}
if err := checkFileExists(tlsConfig.KeyFile); err != nil {
return fmt.Errorf("error checking client key file %q: %w", tlsConfig.KeyFile, err)
}
return nil
}
func checkSDFile(filename string) ([]*targetgroup.Group, error) {
fd, err := os.Open(filename)
if err != nil {
return nil, err
}
defer fd.Close()
content, err := io.ReadAll(fd)
if err != nil {
return nil, err
}
var targetGroups []*targetgroup.Group
switch ext := filepath.Ext(filename); strings.ToLower(ext) {
case ".json":
if err := json.Unmarshal(content, &targetGroups); err != nil {
return nil, err
}
case ".yml", ".yaml":
if err := yaml.UnmarshalStrict(content, &targetGroups); err != nil {
return nil, err
}
default:
return nil, fmt.Errorf("invalid file extension: %q", ext)
}
for i, tg := range targetGroups {
if tg == nil {
return nil, fmt.Errorf("nil target group item found (index %d)", i)
}
}
return targetGroups, nil
}
// CheckRules validates rule files.
func CheckRules(ls lintConfig, files ...string) int {
failed := false
hasErrors := false
if len(files) == 0 {
failed, hasErrors = checkRulesFromStdin(ls)
} else {
failed, hasErrors = checkRules(files, ls)
}
if failed && hasErrors {
return failureExitCode
}
if failed && ls.fatal {
return lintErrExitCode
}
return successExitCode
}
// checkRulesFromStdin validates rule from stdin.
func checkRulesFromStdin(ls lintConfig) (bool, bool) {
failed := false
hasErrors := false
fmt.Println("Checking standard input")
data, err := io.ReadAll(os.Stdin)
if err != nil {
fmt.Fprintln(os.Stderr, " FAILED:", err)
return true, true
}
rgs, errs := rulefmt.Parse(data)
if errs != nil {
failed = true
fmt.Fprintln(os.Stderr, " FAILED:")
for _, e := range errs {
fmt.Fprintln(os.Stderr, e.Error())
hasErrors = hasErrors || !errors.Is(e, errLint)
}
if hasErrors {
return failed, hasErrors
}
}
if n, errs := checkRuleGroups(rgs, ls); errs != nil {
fmt.Fprintln(os.Stderr, " FAILED:")
for _, e := range errs {
fmt.Fprintln(os.Stderr, e.Error())
}
failed = true
for _, err := range errs {
hasErrors = hasErrors || !errors.Is(err, errLint)
}
} else {
fmt.Printf(" SUCCESS: %d rules found\n", n)
}
fmt.Println()
return failed, hasErrors
}
// checkRules validates rule files.
func checkRules(files []string, ls lintConfig) (bool, bool) {
failed := false
hasErrors := false
for _, f := range files {
fmt.Println("Checking", f)
rgs, errs := rulefmt.ParseFile(f)
if errs != nil {
failed = true
fmt.Fprintln(os.Stderr, " FAILED:")
for _, e := range errs {
fmt.Fprintln(os.Stderr, e.Error())
hasErrors = hasErrors || !errors.Is(e, errLint)
}
if hasErrors {
continue
}
}
if n, errs := checkRuleGroups(rgs, ls); errs != nil {
fmt.Fprintln(os.Stderr, " FAILED:")
for _, e := range errs {
fmt.Fprintln(os.Stderr, e.Error())
}
failed = true
for _, err := range errs {
hasErrors = hasErrors || !errors.Is(err, errLint)
}
} else {
fmt.Printf(" SUCCESS: %d rules found\n", n)
}
fmt.Println()
}
return failed, hasErrors
}
func checkRuleGroups(rgs *rulefmt.RuleGroups, lintSettings lintConfig) (int, []error) {
numRules := 0
for _, rg := range rgs.Groups {
numRules += len(rg.Rules)
}
if lintSettings.lintDuplicateRules() {
dRules := checkDuplicates(rgs.Groups)
if len(dRules) != 0 {
errMessage := fmt.Sprintf("%d duplicate rule(s) found.\n", len(dRules))
for _, n := range dRules {
errMessage += fmt.Sprintf("Metric: %s\nLabel(s):\n", n.metric)
n.label.Range(func(l labels.Label) {
errMessage += fmt.Sprintf("\t%s: %s\n", l.Name, l.Value)
})
}
errMessage += "Might cause inconsistency while recording expressions"
return 0, []error{fmt.Errorf("%w %s", errLint, errMessage)}
}
}
return numRules, nil
}
type compareRuleType struct {
metric string
label labels.Labels
}
type compareRuleTypes []compareRuleType
func (c compareRuleTypes) Len() int { return len(c) }
func (c compareRuleTypes) Swap(i, j int) { c[i], c[j] = c[j], c[i] }
func (c compareRuleTypes) Less(i, j int) bool { return compare(c[i], c[j]) < 0 }
func compare(a, b compareRuleType) int {
if res := strings.Compare(a.metric, b.metric); res != 0 {
return res
}
return labels.Compare(a.label, b.label)
}
func checkDuplicates(groups []rulefmt.RuleGroup) []compareRuleType {
var duplicates []compareRuleType
var rules compareRuleTypes
for _, group := range groups {
for _, rule := range group.Rules {
rules = append(rules, compareRuleType{
metric: ruleMetric(rule),
label: labels.FromMap(rule.Labels),
})
}
}
if len(rules) < 2 {
return duplicates
}
sort.Sort(rules)
last := rules[0]
for i := 1; i < len(rules); i++ {
if compare(last, rules[i]) == 0 {
// Don't add a duplicated rule multiple times.
if len(duplicates) == 0 || compare(last, duplicates[len(duplicates)-1]) != 0 {
duplicates = append(duplicates, rules[i])
}
}
last = rules[i]
}
return duplicates
}
func ruleMetric(rule rulefmt.RuleNode) string {
if rule.Alert.Value != "" {
return rule.Alert.Value
}
return rule.Record.Value
}
var checkMetricsUsage = strings.TrimSpace(`
Pass Prometheus metrics over stdin to lint them for consistency and correctness.
examples:
$ cat metrics.prom | promtool check metrics
$ curl -s http://localhost:9090/metrics | promtool check metrics
`)
// CheckMetrics performs a linting pass on input metrics.
func CheckMetrics(extended bool) int {
var buf bytes.Buffer
tee := io.TeeReader(os.Stdin, &buf)
l := promlint.New(tee)
problems, err := l.Lint()
if err != nil {
fmt.Fprintln(os.Stderr, "error while linting:", err)
return failureExitCode
}
for _, p := range problems {
fmt.Fprintln(os.Stderr, p.Metric, p.Text)
}
if len(problems) > 0 {
return lintErrExitCode
}
if extended {
stats, total, err := checkMetricsExtended(&buf)
if err != nil {
fmt.Fprintln(os.Stderr, err)
return failureExitCode
}
w := tabwriter.NewWriter(os.Stdout, 4, 4, 4, ' ', tabwriter.TabIndent)
fmt.Fprintf(w, "Metric\tCardinality\tPercentage\t\n")
for _, stat := range stats {
fmt.Fprintf(w, "%s\t%d\t%.2f%%\t\n", stat.name, stat.cardinality, stat.percentage*100)
}
fmt.Fprintf(w, "Total\t%d\t%.f%%\t\n", total, 100.)
w.Flush()
}
return successExitCode
}
type metricStat struct {
name string
cardinality int
percentage float64
}
func checkMetricsExtended(r io.Reader) ([]metricStat, int, error) {
p := expfmt.TextParser{}
metricFamilies, err := p.TextToMetricFamilies(r)
if err != nil {
return nil, 0, fmt.Errorf("error while parsing text to metric families: %w", err)
}
var total int
stats := make([]metricStat, 0, len(metricFamilies))
for _, mf := range metricFamilies {
var cardinality int
switch mf.GetType() {
case dto.MetricType_COUNTER, dto.MetricType_GAUGE, dto.MetricType_UNTYPED:
cardinality = len(mf.Metric)
case dto.MetricType_HISTOGRAM:
// Histogram metrics includes sum, count, buckets.
buckets := len(mf.Metric[0].Histogram.Bucket)
cardinality = len(mf.Metric) * (2 + buckets)
case dto.MetricType_SUMMARY:
// Summary metrics includes sum, count, quantiles.
quantiles := len(mf.Metric[0].Summary.Quantile)
cardinality = len(mf.Metric) * (2 + quantiles)
default:
cardinality = len(mf.Metric)
}
stats = append(stats, metricStat{name: mf.GetName(), cardinality: cardinality})
total += cardinality
}
for i := range stats {
stats[i].percentage = float64(stats[i].cardinality) / float64(total)
}
sort.SliceStable(stats, func(i, j int) bool {
return stats[i].cardinality > stats[j].cardinality
})
return stats, total, nil
}
type endpointsGroup struct {
urlToFilename map[string]string
postProcess func(b []byte) ([]byte, error)
}
var (
pprofEndpoints = []endpointsGroup{
{
urlToFilename: map[string]string{
"/debug/pprof/profile?seconds=30": "cpu.pb",
"/debug/pprof/block": "block.pb",
"/debug/pprof/goroutine": "goroutine.pb",
"/debug/pprof/heap": "heap.pb",
"/debug/pprof/mutex": "mutex.pb",
"/debug/pprof/threadcreate": "threadcreate.pb",
},
postProcess: func(b []byte) ([]byte, error) {
p, err := profile.Parse(bytes.NewReader(b))
if err != nil {
return nil, err
}
var buf bytes.Buffer
if err := p.WriteUncompressed(&buf); err != nil {
return nil, fmt.Errorf("writing the profile to the buffer: %w", err)
}
return buf.Bytes(), nil
},
},
{
urlToFilename: map[string]string{
"/debug/pprof/trace?seconds=30": "trace.pb",
},
},
}
metricsEndpoints = []endpointsGroup{
{
urlToFilename: map[string]string{
"/metrics": "metrics.txt",
},
},
}
allEndpoints = append(pprofEndpoints, metricsEndpoints...)
)
func debugPprof(url string) int {
if err := debugWrite(debugWriterConfig{
serverURL: url,
tarballName: "debug.tar.gz",
endPointGroups: pprofEndpoints,
}); err != nil {
fmt.Fprintln(os.Stderr, "error completing debug command:", err)
return failureExitCode
}
return successExitCode
}
func debugMetrics(url string) int {
if err := debugWrite(debugWriterConfig{
serverURL: url,
tarballName: "debug.tar.gz",
endPointGroups: metricsEndpoints,
}); err != nil {
fmt.Fprintln(os.Stderr, "error completing debug command:", err)
return failureExitCode
}
return successExitCode
}
func debugAll(url string) int {
if err := debugWrite(debugWriterConfig{
serverURL: url,
tarballName: "debug.tar.gz",
endPointGroups: allEndpoints,
}); err != nil {
fmt.Fprintln(os.Stderr, "error completing debug command:", err)
return failureExitCode
}
return successExitCode
}
type printer interface {
printValue(v model.Value)
printSeries(v []model.LabelSet)
printLabelValues(v model.LabelValues)
}
type promqlPrinter struct{}
func (p *promqlPrinter) printValue(v model.Value) {
fmt.Println(v)
}
func (p *promqlPrinter) printSeries(val []model.LabelSet) {
for _, v := range val {
fmt.Println(v)
}
}
func (p *promqlPrinter) printLabelValues(val model.LabelValues) {
for _, v := range val {
fmt.Println(v)
}
}
type jsonPrinter struct{}
func (j *jsonPrinter) printValue(v model.Value) {
//nolint:errcheck
json.NewEncoder(os.Stdout).Encode(v)
}
func (j *jsonPrinter) printSeries(v []model.LabelSet) {
//nolint:errcheck
json.NewEncoder(os.Stdout).Encode(v)
}
func (j *jsonPrinter) printLabelValues(v model.LabelValues) {
//nolint:errcheck
json.NewEncoder(os.Stdout).Encode(v)
}
// importRules backfills recording rules from the files provided. The output are blocks of data
// at the outputDir location.
func importRules(url *url.URL, roundTripper http.RoundTripper, start, end, outputDir string, evalInterval, maxBlockDuration time.Duration, files ...string) error {
ctx := context.Background()
var stime, etime time.Time
var err error
if end == "" {
etime = time.Now().UTC().Add(-3 * time.Hour)
} else {
etime, err = parseTime(end)
if err != nil {
return fmt.Errorf("error parsing end time: %w", err)
}
}
stime, err = parseTime(start)
if err != nil {
return fmt.Errorf("error parsing start time: %w", err)
}
if !stime.Before(etime) {
return errors.New("start time is not before end time")
}
cfg := ruleImporterConfig{
outputDir: outputDir,
start: stime,
end: etime,
evalInterval: evalInterval,
maxBlockDuration: maxBlockDuration,
}
api, err := newAPI(url, roundTripper, nil)
if err != nil {
return fmt.Errorf("new api client error: %w", err)
}
ruleImporter := newRuleImporter(log.NewLogfmtLogger(log.NewSyncWriter(os.Stderr)), cfg, api)
errs := ruleImporter.loadGroups(ctx, files)
for _, err := range errs {
if err != nil {
return fmt.Errorf("rule importer parse error: %w", err)
}
}
errs = ruleImporter.importAll(ctx)
for _, err := range errs {
fmt.Fprintln(os.Stderr, "rule importer error:", err)
}
if len(errs) > 0 {
return errors.New("error importing rules")
}
return nil
}
func checkTargetGroupsForAlertmanager(targetGroups []*targetgroup.Group, amcfg *config.AlertmanagerConfig) error {
for _, tg := range targetGroups {
if _, _, err := notifier.AlertmanagerFromGroup(tg, amcfg); err != nil {
return err
}
}
return nil
}
func checkTargetGroupsForScrapeConfig(targetGroups []*targetgroup.Group, scfg *config.ScrapeConfig) error {
var targets []*scrape.Target
lb := labels.NewBuilder(labels.EmptyLabels())
for _, tg := range targetGroups {
var failures []error
targets, failures = scrape.TargetsFromGroup(tg, scfg, false, targets, lb)
if len(failures) > 0 {
first := failures[0]
return first
}
}
return nil
}
func formatPromQL(query string) error {
expr, err := parser.ParseExpr(query)
if err != nil {
return err
}
fmt.Println(expr.Pretty(0))
return nil
}
func labelsSetPromQL(query, labelMatchType, name, value string) error {
expr, err := parser.ParseExpr(query)
if err != nil {
return err
}
var matchType labels.MatchType
switch labelMatchType {
case parser.ItemType(parser.EQL).String():
matchType = labels.MatchEqual
case parser.ItemType(parser.NEQ).String():
matchType = labels.MatchNotEqual
case parser.ItemType(parser.EQL_REGEX).String():
matchType = labels.MatchRegexp
case parser.ItemType(parser.NEQ_REGEX).String():
matchType = labels.MatchNotRegexp
default:
return fmt.Errorf("invalid label match type: %s", labelMatchType)
}
parser.Inspect(expr, func(node parser.Node, path []parser.Node) error {
if n, ok := node.(*parser.VectorSelector); ok {
var found bool
for i, l := range n.LabelMatchers {
if l.Name == name {
n.LabelMatchers[i].Type = matchType
n.LabelMatchers[i].Value = value
found = true
}
}
if !found {
n.LabelMatchers = append(n.LabelMatchers, &labels.Matcher{
Type: matchType,
Name: name,
Value: value,
})
}
}
return nil
})
fmt.Println(expr.Pretty(0))
return nil
}
func labelsDeletePromQL(query, name string) error {
expr, err := parser.ParseExpr(query)
if err != nil {
return err
}
parser.Inspect(expr, func(node parser.Node, path []parser.Node) error {
if n, ok := node.(*parser.VectorSelector); ok {
for i, l := range n.LabelMatchers {
if l.Name == name {
n.LabelMatchers = append(n.LabelMatchers[:i], n.LabelMatchers[i+1:]...)
}
}
}
return nil
})
fmt.Println(expr.Pretty(0))
return nil
}