v2

Documentation

Index

• type Config
  • func (cfg *Config) RegisterFlags(f *flag.FlagSet)
• type Frontend
  • func NewFrontend(cfg Config, log log.Logger, reg prometheus.Registerer, retry *transport.Retry) (*Frontend, error)
  • func (f *Frontend) CheckReady(_ context.Context) error
  • func (f *Frontend) QueryResult(ctx context.Context, qrReq *frontendv2pb.QueryResultRequest) (*frontendv2pb.QueryResultResponse, error)
  • func (f *Frontend) RoundTripGRPC(ctx context.Context, req *httpgrpc.HTTPRequest) (*httpgrpc.HTTPResponse, error)

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.Config `yaml:"grpc_client_config"`
	RetryOnTooManyOutstandingRequests bool              `yaml:"retry_on_too_many_outstanding_requests"`

	// 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, retry *transport.Retry) (*Frontend, error)

NewFrontend 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) QueryResult

func (f *Frontend) QueryResult(ctx context.Context, qrReq *frontendv2pb.QueryResultRequest) (*frontendv2pb.QueryResultResponse, error)

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).