frontend

Documentation

Index

• Constants
• func NewRoundTripper(next http.RoundTripper, middlewares ...Middleware) http.RoundTripper
• type Config
  • func (cfg *Config) RegisterFlagsAndApplyDefaults(prefix string, f *flag.FlagSet)
• type CortexNoQuerierLimits
  • func (CortexNoQuerierLimits) MaxQueriersPerUser(user string) int
• type Middleware
  • func MergeMiddlewares(middleware ...Middleware) Middleware
• type MiddlewareFunc
  • func (q MiddlewareFunc) Wrap(h http.RoundTripper) http.RoundTripper
• type QueryFrontend
  • func New(cfg Config, next http.RoundTripper, store storage.Store, logger log.Logger, ...) (*QueryFrontend, error)
• type RoundTripperFunc
  • func (fn RoundTripperFunc) RoundTrip(req *http.Request) (*http.Response, error)

Constants

const (
	// StatusClientClosedRequest is the status code for when a client request cancellation of an http request
	StatusClientClosedRequest = 499
)

Functions

func NewRoundTripper

func NewRoundTripper(next http.RoundTripper, middlewares ...Middleware) http.RoundTripper

NewRoundTripper takes an ordered set of middlewares and builds a http.RoundTripper around them

Types

type Config

type Config struct {
	Config               frontend.CombinedFrontendConfig `yaml:",inline"`
	MaxRetries           int                             `yaml:"max_retries,omitempty"`
	QueryShards          int                             `yaml:"query_shards,omitempty"`
	TolerateFailedBlocks int                             `yaml:"tolerate_failed_blocks,omitempty"`
}

func (*Config) RegisterFlagsAndApplyDefaults

func (cfg *Config) RegisterFlagsAndApplyDefaults(prefix string, f *flag.FlagSet)

type CortexNoQuerierLimits

type CortexNoQuerierLimits struct{}

func (CortexNoQuerierLimits) MaxQueriersPerUser

func (CortexNoQuerierLimits) MaxQueriersPerUser(user string) int

type Middleware

type Middleware interface {
	Wrap(http.RoundTripper) http.RoundTripper
}

Middleware is used to build pipelines of http.Roundtrippers

func MergeMiddlewares

func MergeMiddlewares(middleware ...Middleware) Middleware

MergeMiddlewares takes a set of ordered middlewares and merges them into a pipeline

type MiddlewareFunc

type MiddlewareFunc func(http.RoundTripper) http.RoundTripper

MiddlewareFunc is like http.HandlerFunc, but for Middleware.

func (MiddlewareFunc) Wrap

func (q MiddlewareFunc) Wrap(h http.RoundTripper) http.RoundTripper

Wrap implements Middleware.

type QueryFrontend

type QueryFrontend struct {
	TraceByID, Search, BackendSearch http.Handler
	// contains filtered or unexported fields
}

func New

func New(cfg Config, next http.RoundTripper, store storage.Store, logger log.Logger, registerer prometheus.Registerer) (*QueryFrontend, error)

New returns a new QueryFrontend

type RoundTripperFunc

type RoundTripperFunc func(*http.Request) (*http.Response, error)

RoundTripperFunc is like http.HandlerFunc, but for RoundTripper

chosen for pipeline building over queryrange.Handler b/c of how similar queryrange.Handler is to this existing interface.

func (RoundTripperFunc) RoundTrip

func (fn RoundTripperFunc) RoundTrip(req *http.Request) (*http.Response, error)

RoundTrip implememnts http.RoundTripper