prometheus

package
v0.14.0-snapshot.0 Latest Latest
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 Go to latest Published: Jan 18, 2019 License: Apache-2.0 Imports: 14 Imported by: 81

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Constants

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Variables

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Functions

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Types

type BaseMetricsQuery added in v0.12.0 

type BaseMetricsQuery struct {
	v1.Range
	RateInterval string
	RateFunc     string
	Quantiles    []string
	Avg          bool
	ByLabels     []string
}

BaseMetricsQuery holds common parameters for all kinds of queries

type Client 

type Client struct {
	ClientInterface
	// contains filtered or unexported fields
}

Client for Prometheus API. It hides the way we query Prometheus offering a layer with a high level defined API.

func NewClient 

func NewClient() (*Client, error)

NewClient creates a new client to the Prometheus API. It returns an error on any problem.

func (*Client) API 

func (in *Client) API() v1.API

API returns the Prometheus V1 HTTP API for performing calls not supported natively by this client

func (*Client) Address 

func (in *Client) Address() string

Address return the configured Prometheus service URL

func (*Client) FetchHistogramRange added in v0.12.0 

func (in *Client) FetchHistogramRange(metricName, labels, grouping string, q *BaseMetricsQuery) Histogram

FetchHistogramRange fetches bucketed metric as histogram in given range

func (*Client) FetchRateRange added in v0.12.0 

func (in *Client) FetchRateRange(metricName, labels, grouping string, q *BaseMetricsQuery) *Metric

FetchRateRange fetches a counter's rate in given range

func (*Client) GetAllRequestRates added in v0.6.0 

func (in *Client) GetAllRequestRates(namespace string, ratesInterval string, queryTime time.Time) (model.Vector, error)

GetAllRequestRates queries Prometheus to fetch request counter rates, over a time interval, for requests into, internal to, or out of the namespace. Returns (rates, error)

func (*Client) GetAppRequestRates added in v0.6.0 

func (in *Client) GetAppRequestRates(namespace, app, ratesInterval string, queryTime time.Time) (model.Vector, model.Vector, error)

GetAppRequestRates queries Prometheus to fetch request counters rates over a time interval for a given app, both in and out. Returns (in, out, error)

func (*Client) GetDestinationServices added in v0.11.0 

func (in *Client) GetDestinationServices(namespace string, namespaceCreationTime time.Time, workloadname string) ([]Service, error)

func (*Client) GetMetrics added in v0.6.0 

func (in *Client) GetMetrics(query *IstioMetricsQuery) Metrics

GetMetrics returns the Metrics related to the provided query options.

func (*Client) GetNamespaceServicesRequestRates 

func (in *Client) GetNamespaceServicesRequestRates(namespace string, ratesInterval string, queryTime time.Time) (model.Vector, error)

GetNamespaceServicesRequestRates queries Prometheus to fetch request counter rates, over a time interval, limited to requests for services in the namespace. Returns (rates, error)

func (*Client) GetServiceRequestRates 

func (in *Client) GetServiceRequestRates(namespace, service, ratesInterval string, queryTime time.Time) (model.Vector, error)

GetServiceRequestRates queries Prometheus to fetch request counters rates over a time interval for a given service (hence only inbound). Returns (in, error)

func (*Client) GetSourceWorkloads added in v0.6.0 

func (in *Client) GetSourceWorkloads(namespace string, namespaceCreationTime time.Time, servicename string) (map[string][]Workload, error)

GetSourceWorkloads returns a map of list of source workloads for a given service identified by its namespace and service name. Returned map has a destination version as a key and a list of workloads as values. It returns an error on any problem.

func (*Client) GetWorkloadRequestRates added in v0.6.0 

func (in *Client) GetWorkloadRequestRates(namespace, workload, ratesInterval string, queryTime time.Time) (model.Vector, model.Vector, error)

GetWorkloadRequestRates queries Prometheus to fetch request counters rates over a time interval for a given workload, both in and out. Returns (in, out, error)

func (*Client) Inject 

func (in *Client) Inject(api v1.API)

Inject allows for replacing the API with a mock For testing

type ClientInterface 

type ClientInterface interface {
	GetAllRequestRates(namespace, ratesInterval string, queryTime time.Time) (model.Vector, error)
	GetNamespaceServicesRequestRates(namespace, ratesInterval string, queryTime time.Time) (model.Vector, error)
	GetServiceRequestRates(namespace, service, ratesInterval string, queryTime time.Time) (model.Vector, error)
	GetAppRequestRates(namespace, app, ratesInterval string, queryTime time.Time) (model.Vector, model.Vector, error)
	GetWorkloadRequestRates(namespace, workload, ratesInterval string, queryTime time.Time) (model.Vector, model.Vector, error)
	GetSourceWorkloads(namespace string, namespaceCreationTime time.Time, servicename string) (map[string][]Workload, error)
	GetDestinationServices(namespace string, namespaceCreationTime time.Time, workloadname string) ([]Service, error)
	FetchRateRange(metricName, labels, grouping string, q *BaseMetricsQuery) *Metric
	FetchHistogramRange(metricName, labels, grouping string, q *BaseMetricsQuery) Histogram
	GetMetrics(query *IstioMetricsQuery) Metrics
}

ClientInterface for mocks (only mocked function are necessary here)

type CustomMetricsQuery added in v0.12.0 

type CustomMetricsQuery struct {
	BaseMetricsQuery
	Namespace string
	App       string
	Version   string
}

CustomMetricsQuery holds query parameters for a custom metrics query

func (*CustomMetricsQuery) FillDefaults added in v0.12.0 

func (q *CustomMetricsQuery) FillDefaults()

FillDefaults fills the struct with default parameters

type Histogram 

type Histogram = map[string]*Metric

Histogram contains Metric objects for several histogram-kind statistics

type IstioMetricsQuery added in v0.12.0 

type IstioMetricsQuery struct {
	BaseMetricsQuery
	Filters   []string
	Namespace string
	App       string
	Workload  string
	Service   string
	Direction string // outbound | inbound
	Reporter  string // source | destination, defaults to source if not provided
}

IstioMetricsQuery holds query parameters for a typical metrics query

func (*IstioMetricsQuery) FillDefaults added in v0.12.0 

func (q *IstioMetricsQuery) FillDefaults()

FillDefaults fills the struct with default parameters

type Metric 

type Metric struct {
	Matrix model.Matrix `json:"matrix"`
	// contains filtered or unexported fields
}

Metric holds the Prometheus Matrix model, which contains one or more time series (depending on grouping)

type Metrics 

type Metrics struct {
	Metrics    map[string]*Metric   `json:"metrics"`
	Histograms map[string]Histogram `json:"histograms"`
}

Metrics contains all simple metrics and histograms data

type Service added in v0.11.0 

type Service struct {
	Namespace   string
	App         string
	ServiceName string
}

Service describes a service with contextual information

type Workload added in v0.6.0 

type Workload struct {
	Namespace string
	App       string
	Workload  string
	Version   string
}

Workload describes a workload with contextual information

Source Files

View all Source files

Directories

Path Synopsis
Package internalmetrics provides functionality to collect Prometheus metrics.
 Package internalmetrics provides functionality to collect Prometheus metrics.

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