grpcclient

Documentation

Index

• Constants
• func Instrument(requestDuration *prometheus.HistogramVec) ([]grpc.UnaryClientInterceptor, []grpc.StreamClientInterceptor)
• func NewBackoffRetry(cfg backoff.Config) grpc.UnaryClientInterceptor
• func NewRateLimiter(cfg *Config) grpc.UnaryClientInterceptor
• func UnarySigningClientInterceptor(ctx context.Context, method string, req, reply interface{}, ...) error
• func UnarySigningServerInterceptor(ctx context.Context, req interface{}, _ *grpc.UnaryServerInfo, ...) (resp interface{}, err error)
• type Config
  • func (cfg *Config) CallOptions() []grpc.CallOption
  • func (cfg *Config) DialOption(unaryClientInterceptors []grpc.UnaryClientInterceptor, ...) ([]grpc.DialOption, error)
  • func (cfg *Config) RegisterFlags(f *flag.FlagSet)
  • func (cfg *Config) RegisterFlagsWithPrefix(prefix, defaultGrpcCompression string, f *flag.FlagSet)
  • func (cfg *Config) Validate(log log.Logger) error
• type SignRequest

Constants

const (
	ErrDifferentSignaturePresent = errors.Error("different signature already present")
	ErrMultipleSignaturePresent  = errors.Error("multiples signature present")
	ErrSignatureNotPresent       = errors.Error("signature not present")
	ErrSignatureMismatch         = errors.Error("signature mismatch")
)

Functions

func Instrument

func Instrument(requestDuration *prometheus.HistogramVec) ([]grpc.UnaryClientInterceptor, []grpc.StreamClientInterceptor)

func NewBackoffRetry

func NewBackoffRetry(cfg backoff.Config) grpc.UnaryClientInterceptor

NewBackoffRetry gRPC middleware.

func NewRateLimiter

func NewRateLimiter(cfg *Config) grpc.UnaryClientInterceptor

NewRateLimiter creates a UnaryClientInterceptor for client side rate limiting.

func UnarySigningClientInterceptor

func UnarySigningClientInterceptor(ctx context.Context, method string, req, reply interface{}, cc *grpc.ClientConn, invoker grpc.UnaryInvoker, opts ...grpc.CallOption) error

func UnarySigningServerInterceptor

func UnarySigningServerInterceptor(ctx context.Context, req interface{}, _ *grpc.UnaryServerInfo, handler grpc.UnaryHandler) (resp interface{}, err error)

Types

type Config

type Config struct {
	MaxRecvMsgSize  int     `yaml:"max_recv_msg_size"`
	MaxSendMsgSize  int     `yaml:"max_send_msg_size"`
	GRPCCompression string  `yaml:"grpc_compression"`
	RateLimit       float64 `yaml:"rate_limit"`
	RateLimitBurst  int     `yaml:"rate_limit_burst"`

	BackoffOnRatelimits bool           `yaml:"backoff_on_ratelimits"`
	BackoffConfig       backoff.Config `yaml:"backoff_config"`

	TLSEnabled               bool             `yaml:"tls_enabled"`
	TLS                      tls.ClientConfig `yaml:",inline"`
	SignWriteRequestsEnabled bool             `yaml:"-"`
}

Config for a gRPC client.

func (*Config) CallOptions

func (cfg *Config) CallOptions() []grpc.CallOption

CallOptions returns the config in terms of CallOptions.

func (*Config) DialOption

func (cfg *Config) DialOption(unaryClientInterceptors []grpc.UnaryClientInterceptor, streamClientInterceptors []grpc.StreamClientInterceptor) ([]grpc.DialOption, error)

DialOption returns the config as a grpc.DialOptions.

func (*Config) RegisterFlags

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

RegisterFlags registers flags.

func (*Config) RegisterFlagsWithPrefix

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

RegisterFlagsWithPrefix registers flags with prefix.

func (*Config) Validate

func (cfg *Config) Validate(log log.Logger) error

type SignRequest

type SignRequest interface {
	// Sign returns the signature for the given request
	Sign(context.Context) (string, error)
	// VerifySign returns true if the signature is valid
	VerifySign(context.Context, string) (bool, error)
}

SignRequest define the interface that must be implemented by the request structs to be signed