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Published: Feb 23, 2021 License: Apache-2.0 Imports: 25 Imported by: 1

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Types

type Config

type Config struct {
	SchedulerAddress  string                   `yaml:"scheduler_address"`
	DNSLookupPeriod   time.Duration            `yaml:"scheduler_dns_lookup_period"`
	WorkerConcurrency int                      `yaml:"scheduler_worker_concurrency"`
	GRPCClientConfig  grpcclient.ConfigWithTLS `yaml:"grpc_client_config"`

	// Used to find local IP address, that is sent to scheduler and querier-worker.
	InfNames []string `yaml:"instance_interface_names"`

	// If set, address is not computed from interfaces.
	Addr string `yaml:"address" doc:"hidden"`
	Port int    `doc:"hidden"`
}

Config for a Frontend.

func (*Config) RegisterFlags

func (cfg *Config) RegisterFlags(f *flag.FlagSet)

type Frontend

type Frontend struct {
	services.Service
	// contains filtered or unexported fields
}

Frontend implements GrpcRoundTripper. It queues HTTP requests, dispatches them to backends via gRPC, and handles retries for requests which failed.

func NewFrontend

func NewFrontend(cfg Config, log log.Logger, reg prometheus.Registerer) (*Frontend, error)

New creates a new frontend.

func (*Frontend) CheckReady

func (f *Frontend) CheckReady(_ context.Context) error

CheckReady determines if the query frontend is ready. Function parameters/return chosen to match the same method in the ingester

func (*Frontend) RoundTripGRPC

func (f *Frontend) RoundTripGRPC(ctx context.Context, req *httpgrpc.HTTPRequest) (*httpgrpc.HTTPResponse, error)

RoundTripGRPC round trips a proto (instead of a HTTP request).

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