configgrpc

README

gRPC Configuration Settings

gRPC exposes a variety of settings. Several of these settings are available for configuration within individual receivers or exporters. In general, none of these settings should need to be adjusted.

Client Configuration

Exporters leverage client configuration.

Note that client configuration supports TLS configuration, the configuration parameters are also defined under tls like server configuration. For more information, see configtls README.

• balancer_name
• compression (default = gzip): Compression type to use (only gzip is supported today)
• endpoint: Valid value syntax available here
• tls
• headers: name/value pairs added to the request
• keepalive
  • permit_without_stream
  • time
  • timeout
• read_buffer_size
• write_buffer_size

Please note that per_rpc_auth which allows the credentials to send for every RPC is now moved to become an extension. Note that this feature isn't about sending the headers only during the initial connection as an authorization header under the headers would do: this is sent for every RPC performed during an established connection.

Example:

exporters:
  otlp:
    endpoint: otelcol2:55690
    tls:
      ca_file: ca.pem
      cert_file: cert.pem
      key_file: key.pem
    headers:
      test1: "value1"
      "test 2": "value 2"

Server Configuration

Receivers leverage server configuration.

Note that transport configuration can also be configured. For more information, see confignet README.

• keepalive
  • enforcement_policy
    • min_time
    • permit_without_stream
  • server_parameters
    • max_connection_age
    • max_connection_age_grace
    • max_connection_idle
    • time
    • timeout
• max_concurrent_streams
• max_recv_msg_size_mib
• read_buffer_size
• tls
• write_buffer_size

Documentation

Overview

Package configgrpc defines the configuration settings to create a gRPC client and server.

Index

• Constants
• func GetGRPCCompressionKey(compressionType string) string
• type GRPCClientSettings
  • func (gcs *GRPCClientSettings) SanitizedEndpoint() string
  • func (gcs *GRPCClientSettings) ToDialOptions(host component.Host) ([]grpc.DialOption, error)
• type GRPCServerSettings
  • func (gss *GRPCServerSettings) ToListener() (net.Listener, error)
  • func (gss *GRPCServerSettings) ToServerOption(host component.Host, settings component.TelemetrySettings) ([]grpc.ServerOption, error)
• type KeepaliveClientConfig
• type KeepaliveEnforcementPolicy
• type KeepaliveServerConfig
• type KeepaliveServerParameters

Constants

const (
	CompressionUnsupported = ""
	CompressionGzip        = "gzip"
)

Compression gRPC keys for supported compression types within collector.

Functions

func GetGRPCCompressionKey

func GetGRPCCompressionKey(compressionType string) string

GetGRPCCompressionKey returns the grpc registered compression key if the passed in compression key is supported, and CompressionUnsupported otherwise.

Types

type GRPCClientSettings

type GRPCClientSettings struct {
	// The target to which the exporter is going to send traces or metrics,
	// using the gRPC protocol. The valid syntax is described at
	// https://github.com/grpc/grpc/blob/master/doc/naming.md.
	Endpoint string `mapstructure:"endpoint"`

	// The compression key for supported compression types within
	// collector. Currently the only supported mode is `gzip`.
	Compression string `mapstructure:"compression"`

	// TLSSetting struct exposes TLS client configuration.
	TLSSetting configtls.TLSClientSetting `mapstructure:"tls,omitempty"`

	// The keepalive parameters for gRPC client. See grpc.WithKeepaliveParams.
	// (https://godoc.org/google.golang.org/grpc#WithKeepaliveParams).
	Keepalive *KeepaliveClientConfig `mapstructure:"keepalive"`

	// ReadBufferSize for gRPC client. See grpc.WithReadBufferSize.
	// (https://godoc.org/google.golang.org/grpc#WithReadBufferSize).
	ReadBufferSize int `mapstructure:"read_buffer_size"`

	// WriteBufferSize for gRPC gRPC. See grpc.WithWriteBufferSize.
	// (https://godoc.org/google.golang.org/grpc#WithWriteBufferSize).
	WriteBufferSize int `mapstructure:"write_buffer_size"`

	// WaitForReady parameter configures client to wait for ready state before sending data.
	// (https://github.com/grpc/grpc/blob/master/doc/wait-for-ready.md)
	WaitForReady bool `mapstructure:"wait_for_ready"`

	// The headers associated with gRPC requests.
	Headers map[string]string `mapstructure:"headers"`

	// Sets the balancer in grpclb_policy to discover the servers. Default is pick_first.
	// https://github.com/grpc/grpc-go/blob/master/examples/features/load_balancing/README.md
	BalancerName string `mapstructure:"balancer_name"`

	// Auth configuration for outgoing RPCs.
	Auth *configauth.Authentication `mapstructure:"auth,omitempty"`
}

GRPCClientSettings defines common settings for a gRPC client configuration.

func (*GRPCClientSettings) SanitizedEndpoint

func (gcs *GRPCClientSettings) SanitizedEndpoint() string

SanitizedEndpoint strips the prefix of either http:// or https:// from configgrpc.GRPCClientSettings.Endpoint.

func (*GRPCClientSettings) ToDialOptions

func (gcs *GRPCClientSettings) ToDialOptions(host component.Host) ([]grpc.DialOption, error)

ToDialOptions maps configgrpc.GRPCClientSettings to a slice of dial options for gRPC.

type GRPCServerSettings

type GRPCServerSettings struct {
	// Server net.Addr config. For transport only "tcp" and "unix" are valid options.
	NetAddr confignet.NetAddr `mapstructure:",squash"`

	// Configures the protocol to use TLS.
	// The default value is nil, which will cause the protocol to not use TLS.
	TLSSetting *configtls.TLSServerSetting `mapstructure:"tls,omitempty"`

	// MaxRecvMsgSizeMiB sets the maximum size (in MiB) of messages accepted by the server.
	MaxRecvMsgSizeMiB uint64 `mapstructure:"max_recv_msg_size_mib"`

	// MaxConcurrentStreams sets the limit on the number of concurrent streams to each ServerTransport.
	// It has effect only for streaming RPCs.
	MaxConcurrentStreams uint32 `mapstructure:"max_concurrent_streams"`

	// ReadBufferSize for gRPC server. See grpc.ReadBufferSize.
	// (https://godoc.org/google.golang.org/grpc#ReadBufferSize).
	ReadBufferSize int `mapstructure:"read_buffer_size"`

	// WriteBufferSize for gRPC server. See grpc.WriteBufferSize.
	// (https://godoc.org/google.golang.org/grpc#WriteBufferSize).
	WriteBufferSize int `mapstructure:"write_buffer_size"`

	// Keepalive anchor for all the settings related to keepalive.
	Keepalive *KeepaliveServerConfig `mapstructure:"keepalive,omitempty"`

	// Auth for this receiver
	Auth *configauth.Authentication `mapstructure:"auth,omitempty"`
}

GRPCServerSettings defines common settings for a gRPC server configuration.

func (*GRPCServerSettings) ToListener

func (gss *GRPCServerSettings) ToListener() (net.Listener, error)

ToListener returns the net.Listener constructed from the settings.

func (*GRPCServerSettings) ToServerOption

func (gss *GRPCServerSettings) ToServerOption(host component.Host, settings component.TelemetrySettings) ([]grpc.ServerOption, error)

ToServerOption maps configgrpc.GRPCServerSettings to a slice of server options for gRPC.

type KeepaliveClientConfig

type KeepaliveClientConfig struct {
	Time                time.Duration `mapstructure:"time,omitempty"`
	Timeout             time.Duration `mapstructure:"timeout,omitempty"`
	PermitWithoutStream bool          `mapstructure:"permit_without_stream,omitempty"`
}

KeepaliveClientConfig exposes the keepalive.ClientParameters to be used by the exporter. Refer to the original data-structure for the meaning of each parameter: https://godoc.org/google.golang.org/grpc/keepalive#ClientParameters

type KeepaliveEnforcementPolicy

type KeepaliveEnforcementPolicy struct {
	MinTime             time.Duration `mapstructure:"min_time,omitempty"`
	PermitWithoutStream bool          `mapstructure:"permit_without_stream,omitempty"`
}

KeepaliveEnforcementPolicy allow configuration of the keepalive.EnforcementPolicy. The same default values as keepalive.EnforcementPolicy are applicable and get applied by the server. See https://godoc.org/google.golang.org/grpc/keepalive#EnforcementPolicy for details.

type KeepaliveServerConfig

type KeepaliveServerConfig struct {
	ServerParameters  *KeepaliveServerParameters  `mapstructure:"server_parameters,omitempty"`
	EnforcementPolicy *KeepaliveEnforcementPolicy `mapstructure:"enforcement_policy,omitempty"`
}

KeepaliveServerConfig is the configuration for keepalive.

type KeepaliveServerParameters

type KeepaliveServerParameters struct {
	MaxConnectionIdle     time.Duration `mapstructure:"max_connection_idle,omitempty"`
	MaxConnectionAge      time.Duration `mapstructure:"max_connection_age,omitempty"`
	MaxConnectionAgeGrace time.Duration `mapstructure:"max_connection_age_grace,omitempty"`
	Time                  time.Duration `mapstructure:"time,omitempty"`
	Timeout               time.Duration `mapstructure:"timeout,omitempty"`
}

KeepaliveServerParameters allow configuration of the keepalive.ServerParameters. The same default values as keepalive.ServerParameters are applicable and get applied by the server. See https://godoc.org/google.golang.org/grpc/keepalive#ServerParameters for details.