v1

package
v1.19.0 Latest Latest
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 Go to latest Published: Feb 27, 2024 License: Apache-2.0 Imports: 13 Imported by: 1,030

Documentation

Overview

Package v1 provides bindings to the Prometheus HTTP API v1: http://prometheus.io/docs/querying/api/

Index

Examples

Constants

View Source 
const (
	// Possible values for AlertState.
	AlertStateFiring   AlertState = "firing"
	AlertStateInactive AlertState = "inactive"
	AlertStatePending  AlertState = "pending"

	// Possible values for ErrorType.
	ErrBadData     ErrorType = "bad_data"
	ErrTimeout     ErrorType = "timeout"
	ErrCanceled    ErrorType = "canceled"
	ErrExec        ErrorType = "execution"
	ErrBadResponse ErrorType = "bad_response"
	ErrServer      ErrorType = "server_error"
	ErrClient      ErrorType = "client_error"

	// Possible values for HealthStatus.
	HealthGood    HealthStatus = "up"
	HealthUnknown HealthStatus = "unknown"
	HealthBad     HealthStatus = "down"

	// Possible values for RuleType.
	RuleTypeRecording RuleType = "recording"
	RuleTypeAlerting  RuleType = "alerting"

	// Possible values for RuleHealth.
	RuleHealthGood    = "ok"
	RuleHealthUnknown = "unknown"
	RuleHealthBad     = "err"

	// Possible values for MetricType
	MetricTypeCounter        MetricType = "counter"
	MetricTypeGauge          MetricType = "gauge"
	MetricTypeHistogram      MetricType = "histogram"
	MetricTypeGaugeHistogram MetricType = "gaugehistogram"
	MetricTypeSummary        MetricType = "summary"
	MetricTypeInfo           MetricType = "info"
	MetricTypeStateset       MetricType = "stateset"
	MetricTypeUnknown        MetricType = "unknown"
)

Variables

This section is empty.

Functions

This section is empty.

Types

type API 

type API interface {
	// Alerts returns a list of all active alerts.
	Alerts(ctx context.Context) (AlertsResult, error)
	// AlertManagers returns an overview of the current state of the Prometheus alert manager discovery.
	AlertManagers(ctx context.Context) (AlertManagersResult, error)
	// CleanTombstones removes the deleted data from disk and cleans up the existing tombstones.
	CleanTombstones(ctx context.Context) error
	// Config returns the current Prometheus configuration.
	Config(ctx context.Context) (ConfigResult, error)
	// DeleteSeries deletes data for a selection of series in a time range.
	DeleteSeries(ctx context.Context, matches []string, startTime, endTime time.Time) error
	// Flags returns the flag values that Prometheus was launched with.
	Flags(ctx context.Context) (FlagsResult, error)
	// LabelNames returns the unique label names present in the block in sorted order by given time range and matchers.
	LabelNames(ctx context.Context, matches []string, startTime, endTime time.Time) ([]string, Warnings, error)
	// LabelValues performs a query for the values of the given label, time range and matchers.
	LabelValues(ctx context.Context, label string, matches []string, startTime, endTime time.Time) (model.LabelValues, Warnings, error)
	// Query performs a query for the given time.
	Query(ctx context.Context, query string, ts time.Time, opts ...Option) (model.Value, Warnings, error)
	// QueryRange performs a query for the given range.
	QueryRange(ctx context.Context, query string, r Range, opts ...Option) (model.Value, Warnings, error)
	// QueryExemplars performs a query for exemplars by the given query and time range.
	QueryExemplars(ctx context.Context, query string, startTime, endTime time.Time) ([]ExemplarQueryResult, error)
	// Buildinfo returns various build information properties about the Prometheus server
	Buildinfo(ctx context.Context) (BuildinfoResult, error)
	// Runtimeinfo returns the various runtime information properties about the Prometheus server.
	Runtimeinfo(ctx context.Context) (RuntimeinfoResult, error)
	// Series finds series by label matchers.
	Series(ctx context.Context, matches []string, startTime, endTime time.Time) ([]model.LabelSet, Warnings, error)
	// Snapshot creates a snapshot of all current data into snapshots/<datetime>-<rand>
	// under the TSDB's data directory and returns the directory as response.
	Snapshot(ctx context.Context, skipHead bool) (SnapshotResult, error)
	// Rules returns a list of alerting and recording rules that are currently loaded.
	Rules(ctx context.Context) (RulesResult, error)
	// Targets returns an overview of the current state of the Prometheus target discovery.
	Targets(ctx context.Context) (TargetsResult, error)
	// TargetsMetadata returns metadata about metrics currently scraped by the target.
	TargetsMetadata(ctx context.Context, matchTarget, metric, limit string) ([]MetricMetadata, error)
	// Metadata returns metadata about metrics currently scraped by the metric name.
	Metadata(ctx context.Context, metric, limit string) (map[string][]Metadata, error)
	// TSDB returns the cardinality statistics.
	TSDB(ctx context.Context) (TSDBResult, error)
	// WalReplay returns the current replay status of the wal.
	WalReplay(ctx context.Context) (WalReplayStatus, error)
}

API provides bindings for Prometheus's v1 API.

Example (Query) 
package main

import (
	"context"
	"fmt"
	"os"
	"time"

	"github.com/prometheus/client_golang/api"
	v1 "github.com/prometheus/client_golang/api/prometheus/v1"
)

func main() {
	client, err := api.NewClient(api.Config{
		Address: "http://demo.robustperception.io:9090",
	})
	if err != nil {
		fmt.Printf("Error creating client: %v\n", err)
		os.Exit(1)
	}

	v1api := v1.NewAPI(client)
	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
	defer cancel()
	result, warnings, err := v1api.Query(ctx, "up", time.Now(), v1.WithTimeout(5*time.Second))
	if err != nil {
		fmt.Printf("Error querying Prometheus: %v\n", err)
		os.Exit(1)
	}
	if len(warnings) > 0 {
		fmt.Printf("Warnings: %v\n", warnings)
	}
	fmt.Printf("Result:\n%v\n", result)
}

Output:
Example (QueryRange) 
package main

import (
	"context"
	"fmt"
	"os"
	"time"

	"github.com/prometheus/client_golang/api"
	v1 "github.com/prometheus/client_golang/api/prometheus/v1"
)

func main() {
	client, err := api.NewClient(api.Config{
		Address: "http://demo.robustperception.io:9090",
	})
	if err != nil {
		fmt.Printf("Error creating client: %v\n", err)
		os.Exit(1)
	}

	v1api := v1.NewAPI(client)
	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
	defer cancel()
	r := v1.Range{
		Start: time.Now().Add(-time.Hour),
		End:   time.Now(),
		Step:  time.Minute,
	}
	result, warnings, err := v1api.QueryRange(ctx, "rate(prometheus_tsdb_head_samples_appended_total[5m])", r, v1.WithTimeout(5*time.Second))
	if err != nil {
		fmt.Printf("Error querying Prometheus: %v\n", err)
		os.Exit(1)
	}
	if len(warnings) > 0 {
		fmt.Printf("Warnings: %v\n", warnings)
	}
	fmt.Printf("Result:\n%v\n", result)
}

Output:
Example (QueryRangeWithAuthBearerToken) 
package main

import (
	"context"
	"fmt"
	"os"
	"time"

	"github.com/prometheus/common/config"

	"github.com/prometheus/client_golang/api"
	v1 "github.com/prometheus/client_golang/api/prometheus/v1"
)

func main() {
	client, err := api.NewClient(api.Config{
		Address: "http://demo.robustperception.io:9090",
		// We can use amazing github.com/prometheus/common/config helper!
		RoundTripper: config.NewAuthorizationCredentialsRoundTripper("Bearer", "secret_token", api.DefaultRoundTripper),
	})
	if err != nil {
		fmt.Printf("Error creating client: %v\n", err)
		os.Exit(1)
	}

	v1api := v1.NewAPI(client)
	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
	defer cancel()
	r := v1.Range{
		Start: time.Now().Add(-time.Hour),
		End:   time.Now(),
		Step:  time.Minute,
	}
	result, warnings, err := v1api.QueryRange(ctx, "rate(prometheus_tsdb_head_samples_appended_total[5m])", r)
	if err != nil {
		fmt.Printf("Error querying Prometheus: %v\n", err)
		os.Exit(1)
	}
	if len(warnings) > 0 {
		fmt.Printf("Warnings: %v\n", warnings)
	}
	fmt.Printf("Result:\n%v\n", result)
}

Output:
Example (QueryRangeWithBasicAuth) 
package main

import (
	"context"
	"fmt"
	"os"
	"time"

	"github.com/prometheus/common/config"

	"github.com/prometheus/client_golang/api"
	v1 "github.com/prometheus/client_golang/api/prometheus/v1"
)

func main() {
	client, err := api.NewClient(api.Config{
		Address: "http://demo.robustperception.io:9090",
		// We can use amazing github.com/prometheus/common/config helper!
		RoundTripper: config.NewBasicAuthRoundTripper("me", "definitely_me", "", "", api.DefaultRoundTripper),
	})
	if err != nil {
		fmt.Printf("Error creating client: %v\n", err)
		os.Exit(1)
	}

	v1api := v1.NewAPI(client)
	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
	defer cancel()
	r := v1.Range{
		Start: time.Now().Add(-time.Hour),
		End:   time.Now(),
		Step:  time.Minute,
	}
	result, warnings, err := v1api.QueryRange(ctx, "rate(prometheus_tsdb_head_samples_appended_total[5m])", r)
	if err != nil {
		fmt.Printf("Error querying Prometheus: %v\n", err)
		os.Exit(1)
	}
	if len(warnings) > 0 {
		fmt.Printf("Warnings: %v\n", warnings)
	}
	fmt.Printf("Result:\n%v\n", result)
}

Output:
Example (QueryRangeWithUserAgent) 
package main

import (
	"context"
	"fmt"
	"net/http"
	"os"
	"time"

	"github.com/prometheus/client_golang/api"
	v1 "github.com/prometheus/client_golang/api/prometheus/v1"
)

type userAgentRoundTripper struct {
	name string
	rt   http.RoundTripper
}

// RoundTrip implements the http.RoundTripper interface.
func (u userAgentRoundTripper) RoundTrip(r *http.Request) (*http.Response, error) {
	if r.UserAgent() == "" {

		r2 := new(http.Request)
		*r2 = *r
		r2.Header = make(http.Header)
		for k, s := range r.Header {
			r2.Header[k] = s
		}
		r2.Header.Set("User-Agent", u.name)
		r = r2
	}
	return u.rt.RoundTrip(r)
}

func main() {
	client, err := api.NewClient(api.Config{
		Address:      "http://demo.robustperception.io:9090",
		RoundTripper: userAgentRoundTripper{name: "Client-Golang", rt: api.DefaultRoundTripper},
	})
	if err != nil {
		fmt.Printf("Error creating client: %v\n", err)
		os.Exit(1)
	}

	v1api := v1.NewAPI(client)
	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
	defer cancel()
	r := v1.Range{
		Start: time.Now().Add(-time.Hour),
		End:   time.Now(),
		Step:  time.Minute,
	}
	result, warnings, err := v1api.QueryRange(ctx, "rate(prometheus_tsdb_head_samples_appended_total[5m])", r)
	if err != nil {
		fmt.Printf("Error querying Prometheus: %v\n", err)
		os.Exit(1)
	}
	if len(warnings) > 0 {
		fmt.Printf("Warnings: %v\n", warnings)
	}
	fmt.Printf("Result:\n%v\n", result)
}

Output:
Example (Series) 
package main

import (
	"context"
	"fmt"
	"os"
	"time"

	"github.com/prometheus/client_golang/api"
	v1 "github.com/prometheus/client_golang/api/prometheus/v1"
)

func main() {
	client, err := api.NewClient(api.Config{
		Address: "http://demo.robustperception.io:9090",
	})
	if err != nil {
		fmt.Printf("Error creating client: %v\n", err)
		os.Exit(1)
	}

	v1api := v1.NewAPI(client)
	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
	defer cancel()
	lbls, warnings, err := v1api.Series(ctx, []string{
		"{__name__=~\"scrape_.+\",job=\"node\"}",
		"{__name__=~\"scrape_.+\",job=\"prometheus\"}",
	}, time.Now().Add(-time.Hour), time.Now())
	if err != nil {
		fmt.Printf("Error querying Prometheus: %v\n", err)
		os.Exit(1)
	}
	if len(warnings) > 0 {
		fmt.Printf("Warnings: %v\n", warnings)
	}
	fmt.Println("Result:")
	for _, lbl := range lbls {
		fmt.Println(lbl)
	}
}

Output:

func NewAPI 

func NewAPI(c api.Client) API

NewAPI returns a new API for the client.

It is safe to use the returned API from multiple goroutines.

type ActiveTarget 

type ActiveTarget struct {
	DiscoveredLabels   map[string]string `json:"discoveredLabels"`
	Labels             model.LabelSet    `json:"labels"`
	ScrapePool         string            `json:"scrapePool"`
	ScrapeURL          string            `json:"scrapeUrl"`
	GlobalURL          string            `json:"globalUrl"`
	LastError          string            `json:"lastError"`
	LastScrape         time.Time         `json:"lastScrape"`
	LastScrapeDuration float64           `json:"lastScrapeDuration"`
	Health             HealthStatus      `json:"health"`
}

ActiveTarget models an active Prometheus scrape target.

type Alert added in v0.9.3 

type Alert struct {
	ActiveAt    time.Time `json:"activeAt"`
	Annotations model.LabelSet
	Labels      model.LabelSet
	State       AlertState
	Value       string
}

Alert models an active alert.

type AlertManager 

type AlertManager struct {
	URL string `json:"url"`
}

AlertManager models a configured Alert Manager.

type AlertManagersResult 

type AlertManagersResult struct {
	Active  []AlertManager `json:"activeAlertManagers"`
	Dropped []AlertManager `json:"droppedAlertManagers"`
}

AlertManagersResult contains the result from querying the alertmanagers endpoint.

type AlertState added in v0.9.3 

type AlertState string

AlertState models the state of an alert.

type AlertingRule added in v0.9.3 

type AlertingRule struct {
	Name           string         `json:"name"`
	Query          string         `json:"query"`
	Duration       float64        `json:"duration"`
	Labels         model.LabelSet `json:"labels"`
	Annotations    model.LabelSet `json:"annotations"`
	Alerts         []*Alert       `json:"alerts"`
	Health         RuleHealth     `json:"health"`
	LastError      string         `json:"lastError,omitempty"`
	EvaluationTime float64        `json:"evaluationTime"`
	LastEvaluation time.Time      `json:"lastEvaluation"`
	State          string         `json:"state"`
}

AlertingRule models a alerting rule.

func (*AlertingRule) UnmarshalJSON added in v0.9.3 

func (r *AlertingRule) UnmarshalJSON(b []byte) error

type AlertsResult added in v0.9.3 

type AlertsResult struct {
	Alerts []Alert `json:"alerts"`
}

AlertsResult contains the result from querying the alerts endpoint.

type BuildinfoResult added in v0.12.1 

type BuildinfoResult struct {
	Version   string `json:"version"`
	Revision  string `json:"revision"`
	Branch    string `json:"branch"`
	BuildUser string `json:"buildUser"`
	BuildDate string `json:"buildDate"`
	GoVersion string `json:"goVersion"`
}

BuildinfoResult contains the results from querying the buildinfo endpoint.

type ConfigResult 

type ConfigResult struct {
	YAML string `json:"yaml"`
}

ConfigResult contains the result from querying the config endpoint.

type DroppedTarget 

type DroppedTarget struct {
	DiscoveredLabels map[string]string `json:"discoveredLabels"`
}

DroppedTarget models a dropped Prometheus scrape target.

type Error 

type Error struct {
	Type   ErrorType
	Msg    string
	Detail string
}

Error is an error returned by the API.

func (*Error) Error 

func (e *Error) Error() string

type ErrorType 

type ErrorType string

ErrorType models the different API error types.

type Exemplar added in v0.12.1 

type Exemplar struct {
	Labels    model.LabelSet    `json:"labels"`
	Value     model.SampleValue `json:"value"`
	Timestamp model.Time        `json:"timestamp"`
}

Exemplar is additional information associated with a time series.

type ExemplarQueryResult added in v0.12.1 

type ExemplarQueryResult struct {
	SeriesLabels model.LabelSet `json:"seriesLabels"`
	Exemplars    []Exemplar     `json:"exemplars"`
}

type FlagsResult 

type FlagsResult map[string]string

FlagsResult contains the result from querying the flag endpoint.

type HealthStatus 

type HealthStatus string

HealthStatus models the health status of a scrape target.

type Metadata added in v0.12.1 

type Metadata struct {
	Type MetricType `json:"type"`
	Help string     `json:"help"`
	Unit string     `json:"unit"`
}

Metadata models the metadata of a metric.

type MetricMetadata added in v0.9.4 

type MetricMetadata struct {
	Target map[string]string `json:"target"`
	Metric string            `json:"metric,omitempty"`
	Type   MetricType        `json:"type"`
	Help   string            `json:"help"`
	Unit   string            `json:"unit"`
}

MetricMetadata models the metadata of a metric with its scrape target and name.

type MetricType added in v0.9.4 

type MetricType string

MetricType models the type of a metric.

type Option added in v1.13.0 

type Option func(c *apiOptions)

func WithTimeout added in v1.13.0 

func WithTimeout(timeout time.Duration) Option

WithTimeout can be used to provide an optional query evaluation timeout for Query and QueryRange. https://prometheus.io/docs/prometheus/latest/querying/api/#instant-queries

type Range 

type Range struct {
	// The boundaries of the time range.
	Start, End time.Time
	// The maximum time between two slices within the boundaries.
	Step time.Duration
}

Range represents a sliced time range.

type RecordingRule added in v0.9.3 

type RecordingRule struct {
	Name           string         `json:"name"`
	Query          string         `json:"query"`
	Labels         model.LabelSet `json:"labels,omitempty"`
	Health         RuleHealth     `json:"health"`
	LastError      string         `json:"lastError,omitempty"`
	EvaluationTime float64        `json:"evaluationTime"`
	LastEvaluation time.Time      `json:"lastEvaluation"`
}

RecordingRule models a recording rule.

func (*RecordingRule) UnmarshalJSON added in v0.9.3 

func (r *RecordingRule) UnmarshalJSON(b []byte) error

type RuleGroup added in v0.9.3 

type RuleGroup struct {
	Name     string  `json:"name"`
	File     string  `json:"file"`
	Interval float64 `json:"interval"`
	Rules    Rules   `json:"rules"`
}

RuleGroup models a rule group that contains a set of recording and alerting rules.

func (*RuleGroup) UnmarshalJSON added in v0.9.3 

func (rg *RuleGroup) UnmarshalJSON(b []byte) error

type RuleHealth added in v0.9.3 

type RuleHealth string

RuleHealth models the health status of a rule.

type RuleType added in v0.9.3 

type RuleType string

RuleType models the type of a rule.

type Rules added in v0.9.3 

type Rules []interface{}

Recording and alerting rules are stored in the same slice to preserve the order that rules are returned in by the API.

Rule types can be determined using a type switch: 

switch v := rule.(type) {
case RecordingRule:
	fmt.Print("got a recording rule")
case AlertingRule:
	fmt.Print("got a alerting rule")
default:
	fmt.Printf("unknown rule type %s", v)
}

type RulesResult added in v0.9.3 

type RulesResult struct {
	Groups []RuleGroup `json:"groups"`
}

RulesResult contains the result from querying the rules endpoint.

type RuntimeinfoResult added in v0.12.1 

type RuntimeinfoResult struct {
	StartTime           time.Time `json:"startTime"`
	CWD                 string    `json:"CWD"`
	ReloadConfigSuccess bool      `json:"reloadConfigSuccess"`
	LastConfigTime      time.Time `json:"lastConfigTime"`
	CorruptionCount     int       `json:"corruptionCount"`
	GoroutineCount      int       `json:"goroutineCount"`
	GOMAXPROCS          int       `json:"GOMAXPROCS"`
	GOGC                string    `json:"GOGC"`
	GODEBUG             string    `json:"GODEBUG"`
	StorageRetention    string    `json:"storageRetention"`
}

RuntimeinfoResult contains the result from querying the runtimeinfo endpoint.

type SnapshotResult 

type SnapshotResult struct {
	Name string `json:"name"`
}

SnapshotResult contains the result from querying the snapshot endpoint.

type Stat added in v0.12.1 

type Stat struct {
	Name  string `json:"name"`
	Value uint64 `json:"value"`
}

Stat models information about statistic value.

type TSDBHeadStats added in v0.12.1 

type TSDBHeadStats struct {
	NumSeries     int `json:"numSeries"`
	NumLabelPairs int `json:"numLabelPairs"`
	ChunkCount    int `json:"chunkCount"`
	MinTime       int `json:"minTime"`
	MaxTime       int `json:"maxTime"`
}

TSDBHeadStats contains TSDB stats

type TSDBResult added in v0.12.1 

type TSDBResult struct {
	HeadStats                   TSDBHeadStats `json:"headStats"`
	SeriesCountByMetricName     []Stat        `json:"seriesCountByMetricName"`
	LabelValueCountByLabelName  []Stat        `json:"labelValueCountByLabelName"`
	MemoryInBytesByLabelName    []Stat        `json:"memoryInBytesByLabelName"`
	SeriesCountByLabelValuePair []Stat        `json:"seriesCountByLabelValuePair"`
}

TSDBResult contains the result from querying the tsdb endpoint.

type TargetsResult 

type TargetsResult struct {
	Active  []ActiveTarget  `json:"activeTargets"`
	Dropped []DroppedTarget `json:"droppedTargets"`
}

TargetsResult contains the result from querying the targets endpoint.

type WalReplayStatus added in v0.12.1 

type WalReplayStatus struct {
	Min     int `json:"min"`
	Max     int `json:"max"`
	Current int `json:"current"`
}

WalReplayStatus represents the wal replay status.

type Warnings added in v0.12.1 

type Warnings []string

Warnings is an array of non critical errors

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