comm

package
v1.4.6 Latest Latest
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 Go to latest Published: May 20, 2020 License: Apache-2.0 Imports: 30 Imported by: 0

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Index

Constants

This section is empty.

Variables

View Source 
var (
	// Max send and receive bytes for grpc clients and servers
	MaxRecvMsgSize = 100 * 1024 * 1024
	MaxSendMsgSize = 100 * 1024 * 1024
	// Default peer keepalive options
	DefaultKeepaliveOptions = &KeepaliveOptions{
		ClientInterval:    time.Duration(1) * time.Minute,
		ClientTimeout:     time.Duration(20) * time.Second,
		ServerInterval:    time.Duration(2) * time.Hour,
		ServerTimeout:     time.Duration(20) * time.Second,
		ServerMinInterval: time.Duration(1) * time.Minute,
	}
	// strong TLS cipher suites
	DefaultTLSCipherSuites = []uint16{
		tls.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
		tls.TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,
		tls.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
		tls.TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,
		tls.TLS_RSA_WITH_AES_128_GCM_SHA256,
		tls.TLS_RSA_WITH_AES_256_GCM_SHA384,
	}
	// default connection timeout
	DefaultConnectionTimeout = 5 * time.Second
)

Configuration defaults

View Source 
var (
	ClientHandshakeNotImplError = errors.New("core/comm: Client handshakes" +
		"are not implemented with serverCreds")
	OverrrideHostnameNotSupportedError = errors.New(
		"core/comm: OverrideServerName is " +
			"not supported")
	ServerHandshakeNotImplementedError = errors.New("core/comm: server handshakes are not implemented with clientCreds")

	MissingServerConfigError = errors.New(
		"core/comm: `serverConfig` cannot be nil")
)
View Source 
var EndpointDisableInterval = time.Second * 10

Functions

func AddPemToCertPool 

func AddPemToCertPool(pemCerts []byte, pool *sm2.CertPool) error

AddPemToCertPool adds PEM-encoded certs to a cert pool

func ClientKeepaliveOptions 

func ClientKeepaliveOptions(ka *KeepaliveOptions) []grpc.DialOption

ClientKeepaliveOptions returns gRPC keepalive options for clients. If opts is nil, the default keepalive options are returned

func ExtractCertificateFromContext 

func ExtractCertificateFromContext(ctx context.Context) *sm2.Certificate

ExtractCertificateFromContext returns the TLS certificate (if applicable) from the given context of a gRPC stream func ExtractCertificateFromContext(ctx context.Context) *x509.Certificate {

func ExtractCertificateHashFromContext 

func ExtractCertificateHashFromContext(ctx context.Context) []byte

ExtractCertificateHashFromContext extracts the hash of the certificate from the given context. If the certificate isn't present, nil is returned

func ExtractRawCertificateFromContext 

func ExtractRawCertificateFromContext(ctx context.Context) []byte

ExtractRawCertificateFromContext returns the raw TLS certificate (if applicable) from the given context of a gRPC stream

func InitTLSForShim 

func InitTLSForShim(key, certStr string) credentials.TransportCredentials

func NewClientConnectionWithAddress 

func NewClientConnectionWithAddress(peerAddress string, block bool, tslEnabled bool,
	creds credentials.TransportCredentials, ka *KeepaliveOptions) (*grpc.ClientConn, error)

NewClientConnectionWithAddress Returns a new grpc.ClientConn to the given address

func NewServerTransportCredentials 

func NewServerTransportCredentials(
	serverConfig *tls.Config,
	logger *flogging.FabricLogger) credentials.TransportCredentials

NewServerTransportCredentials returns a new initialized grpc/credentials.TransportCredentials

func ServerKeepaliveOptions 

func ServerKeepaliveOptions(ka *KeepaliveOptions) []grpc.ServerOption

ServerKeepaliveOptions returns gRPC keepalive options for server. If opts is nil, the default keepalive options are returned

Types

type BindingInspector 

type BindingInspector func(context.Context, proto.Message) error

BindingInspector receives as parameters a gRPC context and an Envelope, and verifies whether the message contains an appropriate binding to the context

func NewBindingInspector 

func NewBindingInspector(mutualTLS bool, extractTLSCertHash CertHashExtractor) BindingInspector

NewBindingInspector returns a BindingInspector according to whether mutualTLS is configured or not, and according to a function that extracts TLS certificate hashes from proto messages

type CertHashExtractor 

type CertHashExtractor func(proto.Message) []byte

CertHashExtractor extracts a certificate from a proto.Message message

type CertificateBundle 

type CertificateBundle [][]byte

CertificateBundle bundles certificates

type ClientConfig 

type ClientConfig struct {
	// SecOpts defines the security parameters
	SecOpts *SecureOptions
	// KaOpts defines the keepalive parameters
	KaOpts *KeepaliveOptions
	// Timeout specifies how long the client will block when attempting to
	// establish a connection
	Timeout time.Duration
	// AsyncConnect makes connection creation non blocking
	AsyncConnect bool
}

ClientConfig defines the parameters for configuring a GRPCClient instance

func (ClientConfig) Clone 

func (cc ClientConfig) Clone() ClientConfig

Clone clones this ClientConfig

type ConnProducer 

type ConnProducer struct {
	sync.RWMutex
	// contains filtered or unexported fields
}

ConnProducer produces connections

func NewConnectionProducer 

func NewConnectionProducer(factory ConnectionFactory, endpoints []EndpointCriteria) *ConnProducer

NewConnectionProducer creates a new ConnectionProducer with given endpoints and connection factory. It returns nil, if the given endpoints slice is empty.

func (*ConnProducer) GetEndpoints 

func (cp *ConnProducer) GetEndpoints() []EndpointCriteria

GetEndpoints returns configured endpoint criteria for ordering service

func (*ConnProducer) NewConnection 

func (cp *ConnProducer) NewConnection() (*grpc.ClientConn, string, error)

NewConnection creates a new connection. Returns the connection, the endpoint selected, nil on success. Returns nil, "", error on failure

func (*ConnProducer) UpdateEndpoints 

func (cp *ConnProducer) UpdateEndpoints(endpoints []EndpointCriteria)

UpdateEndpoints updates the endpoints of the ConnectionProducer to be the given endpoints

type ConnectionFactory 

type ConnectionFactory func(criteria EndpointCriteria) (*grpc.ClientConn, error)

ConnectionFactory creates a connection to a certain endpoint

type ConnectionProducer 

type ConnectionProducer interface {
	// NewConnection creates a new connection.
	// Returns the connection, the endpoint selected, nil on success.
	// Returns nil, "", error on failure
	NewConnection() (*grpc.ClientConn, string, error)
	// UpdateEndpoints updates the endpoint criteria of the ConnectionProducer
	// to be the given endpoints.
	UpdateEndpoints(endpoints []EndpointCriteria)
	// GetEndpoints return ordering service endpoint criteria.
	GetEndpoints() []EndpointCriteria
}

ConnectionProducer produces connections out of a set of predefined endpoints

type CredentialSupport 

type CredentialSupport struct {
	sync.RWMutex
	AppRootCAsByChain           map[string]CertificateBundle
	OrdererRootCAsByChainAndOrg OrgRootCAs
	ClientRootCAs               CertificateBundle
	ServerRootCAs               CertificateBundle
	// contains filtered or unexported fields
}

CredentialSupport type manages credentials used for gRPC client connections

func GetCredentialSupport 

func GetCredentialSupport() *CredentialSupport

GetCredentialSupport returns the singleton CredentialSupport instance

func (*CredentialSupport) GetClientCertificate 

func (cs *CredentialSupport) GetClientCertificate() tls.Certificate

GetClientCertificate returns the client certificate of the CredentialSupport

func (*CredentialSupport) GetDeliverServiceCredentials 

func (cs *CredentialSupport) GetDeliverServiceCredentials(
	channelID string,
	appendStaticRoots bool,
	orgs []string,
	endpointOverrides map[string]*OrdererEndpoint,
) (credentials.TransportCredentials, error)

GetDeliverServiceCredentials returns gRPC transport credentials for given channel to be used by gRPC clients which communicate with ordering service endpoints. If appendStaticRoots is set to true, ServerRootCAs are also included in the credentials. If the channel isn't found, an error is returned.

func (*CredentialSupport) GetPeerCredentials 

func (cs *CredentialSupport) GetPeerCredentials() credentials.TransportCredentials

GetPeerCredentials returns gRPC transport credentials for use by gRPC clients which communicate with remote peer endpoints.

func (*CredentialSupport) SetClientCertificate 

func (cs *CredentialSupport) SetClientCertificate(cert tls.Certificate)

SetClientCertificate sets the tls.Certificate to use for gRPC client connections

type DynamicClientCredentials 

type DynamicClientCredentials struct {
	TLSConfig  *tls.Config
	TLSOptions []TLSOption
}

func (*DynamicClientCredentials) ClientHandshake 

func (dtc *DynamicClientCredentials) ClientHandshake(ctx context.Context, authority string, rawConn net.Conn) (net.Conn, credentials.AuthInfo, error)

func (*DynamicClientCredentials) Clone 

func (dtc *DynamicClientCredentials) Clone() credentials.TransportCredentials

func (*DynamicClientCredentials) Info 

func (dtc *DynamicClientCredentials) Info() credentials.ProtocolInfo

func (*DynamicClientCredentials) OverrideServerName 

func (dtc *DynamicClientCredentials) OverrideServerName(name string) error

func (*DynamicClientCredentials) ServerHandshake 

func (dtc *DynamicClientCredentials) ServerHandshake(rawConn net.Conn) (net.Conn, credentials.AuthInfo, error)

type EndpointCriteria 

type EndpointCriteria struct {
	Endpoint      string
	Organizations []string
}

EndpointCriteria defines an endpoint, and a list of trusted organizations it corresponds to.

func (EndpointCriteria) Equals 

func (ec EndpointCriteria) Equals(other EndpointCriteria) bool

Equals returns whether this EndpointCriteria is equivalent to the given other EndpointCriteria

type GRPCClient 

type GRPCClient struct {
	// contains filtered or unexported fields
}

func NewGRPCClient 

func NewGRPCClient(config ClientConfig) (*GRPCClient, error)

NewGRPCClient creates a new implementation of GRPCClient given an address and client configuration

func (*GRPCClient) Certificate 

func (client *GRPCClient) Certificate() tls.Certificate

Certificate returns the tls.Certificate used to make TLS connections when client certificates are required by the server

func (*GRPCClient) MutualTLSRequired 

func (client *GRPCClient) MutualTLSRequired() bool

MutualTLSRequired is a flag indicating whether the client must send a certificate when making TLS connections

func (*GRPCClient) NewConnection 

func (client *GRPCClient) NewConnection(address string, serverNameOverride string, tlsOptions ...TLSOption) (
	*grpc.ClientConn, error)

NewConnection returns a grpc.ClientConn for the target address and overrides the server name used to verify the hostname on the certificate returned by a server when using TLS

func (*GRPCClient) SetMaxRecvMsgSize 

func (client *GRPCClient) SetMaxRecvMsgSize(size int)

SetMaxRecvMsgSize sets the maximum message size the client can receive

func (*GRPCClient) SetMaxSendMsgSize 

func (client *GRPCClient) SetMaxSendMsgSize(size int)

SetMaxSendMsgSize sets the maximum message size the client can send

func (*GRPCClient) SetServerRootCAs 

func (client *GRPCClient) SetServerRootCAs(serverRoots [][]byte) error

SetServerRootCAs sets the list of authorities used to verify server certificates based on a list of PEM-encoded sm2 certificate authorities

func (*GRPCClient) TLSEnabled 

func (client *GRPCClient) TLSEnabled() bool

TLSEnabled is a flag indicating whether to use TLS for client connections

type GRPCServer 

type GRPCServer struct {
	// contains filtered or unexported fields
}

func NewGRPCServer 

func NewGRPCServer(address string, serverConfig ServerConfig) (*GRPCServer, error)

NewGRPCServer creates a new implementation of a GRPCServer given a listen address

func NewGRPCServerFromListener 

func NewGRPCServerFromListener(listener net.Listener, serverConfig ServerConfig) (*GRPCServer, error)

NewGRPCServerFromListener creates a new implementation of a GRPCServer given an existing net.Listener instance using default keepalive

func (*GRPCServer) Address 

func (gServer *GRPCServer) Address() string

Address returns the listen address for this GRPCServer instance

func (*GRPCServer) AppendClientRootCAs 

func (gServer *GRPCServer) AppendClientRootCAs(clientRoots [][]byte) error

AppendClientRootCAs appends PEM-encoded X509 certificate authorities to the list of authorities used to verify client certificates

func (*GRPCServer) Listener 

func (gServer *GRPCServer) Listener() net.Listener

Listener returns the net.Listener for the GRPCServer instance

func (*GRPCServer) MutualTLSRequired 

func (gServer *GRPCServer) MutualTLSRequired() bool

MutualTLSRequired is a flag indicating whether or not client certificates are required for this GRPCServer instance

func (*GRPCServer) RemoveClientRootCAs 

func (gServer *GRPCServer) RemoveClientRootCAs(clientRoots [][]byte) error

RemoveClientRootCAs removes PEM-encoded X509 certificate authorities from the list of authorities used to verify client certificates

func (*GRPCServer) Server 

func (gServer *GRPCServer) Server() *grpc.Server

Server returns the grpc.Server for the GRPCServer instance

func (*GRPCServer) ServerCertificate 

func (gServer *GRPCServer) ServerCertificate() tls.Certificate

ServerCertificate returns the tls.Certificate used by the grpc.Server

func (*GRPCServer) SetClientRootCAs 

func (gServer *GRPCServer) SetClientRootCAs(clientRoots [][]byte) error

SetClientRootCAs sets the list of authorities used to verify client certificates based on a list of PEM-encoded X509 certificate authorities

func (*GRPCServer) SetServerCertificate 

func (gServer *GRPCServer) SetServerCertificate(cert tls.Certificate)

SetServerCertificate assigns the current TLS certificate to be the peer's server certificate

func (*GRPCServer) Start 

func (gServer *GRPCServer) Start() error

Start starts the underlying grpc.Server

func (*GRPCServer) Stop 

func (gServer *GRPCServer) Stop()

Stop stops the underlying grpc.Server

func (*GRPCServer) TLSEnabled 

func (gServer *GRPCServer) TLSEnabled() bool

TLSEnabled is a flag indicating whether or not TLS is enabled for the GRPCServer instance

type KeepaliveOptions 

type KeepaliveOptions struct {
	// ClientInterval is the duration after which if the client does not see
	// any activity from the server it pings the server to see if it is alive
	ClientInterval time.Duration
	// ClientTimeout is the duration the client waits for a response
	// from the server after sending a ping before closing the connection
	ClientTimeout time.Duration
	// ServerInterval is the duration after which if the server does not see
	// any activity from the client it pings the client to see if it is alive
	ServerInterval time.Duration
	// ServerTimeout is the duration the server waits for a response
	// from the client after sending a ping before closing the connection
	ServerTimeout time.Duration
	// ServerMinInterval is the minimum permitted time between client pings.
	// If clients send pings more frequently, the server will disconnect them
	ServerMinInterval time.Duration
}

KeepaliveOptions is used to set the gRPC keepalive settings for both clients and servers

type Metrics 

type Metrics struct {
	// OpenConnCounter keeps track of number of open connections
	OpenConnCounter metrics.Counter
	// ClosedConnCounter keeps track of number connections closed
	ClosedConnCounter metrics.Counter
}

type NewSemaphoreFunc 

type NewSemaphoreFunc func(size int) Semaphore

type OrdererEndpoint 

type OrdererEndpoint struct {
	Address string
	PEMs    []byte
}

type OrgRootCAs 

type OrgRootCAs map[string]PerOrgCertificateBundle

OrgRootCAs defines root CA certificates of organizations, by their corresponding channels. channel --> organization --> certificates

func (OrgRootCAs) AppendCertificates 

func (orc OrgRootCAs) AppendCertificates(channel string, org string, rootCAs CertificateBundle)

AppendCertificates appends certificates that belong to the given organization in the context of the given channel. This operation isn't thread safe.

func (OrgRootCAs) CertificatesByChannelAndOrg 

func (orc OrgRootCAs) CertificatesByChannelAndOrg(channel string, org string) CertificateBundle

CertificatesByChannelAndOrg returns the certificates of the given organization in the context of the given channel.

type PerOrgCertificateBundle 

type PerOrgCertificateBundle map[string]CertificateBundle

PerOrgCertificateBundle maps organizations to CertificateBundles

type SecureOptions 

type SecureOptions struct {
	// VerifyCertificate, if not nil, is called after normal
	// certificate verification by either a TLS client or server.
	// If it returns a non-nil error, the handshake is aborted and that error results.
	VerifyCertificate func(rawCerts [][]byte, verifiedChains [][]*sm2.Certificate) error
	// PEM-encoded X509 public key to be used for TLS communication
	Certificate []byte
	// PEM-encoded private key to be used for TLS communication
	Key []byte
	// Set of PEM-encoded X509 certificate authorities used by clients to
	// verify server certificates
	ServerRootCAs [][]byte
	// Set of PEM-encoded X509 certificate authorities used by servers to
	// verify client certificates
	ClientRootCAs [][]byte
	// Whether or not to use TLS for communication
	UseTLS bool
	// Whether or not TLS client must present certificates for authentication
	RequireClientCert bool
	// CipherSuites is a list of supported cipher suites for TLS
	CipherSuites []uint16
	// TimeShift makes TLS handshakes time sampling shift to the past by a given duration
	TimeShift time.Duration
}

SecureOptions defines the security parameters (e.g. TLS) for a GRPCServer or GRPCClient instance

type Semaphore 

type Semaphore interface {
	Acquire(ctx context.Context) error
	Release()
}

type ServerConfig 

type ServerConfig struct {
	// ConnectionTimeout specifies the timeout for connection establishment
	// for all new connections
	ConnectionTimeout time.Duration
	// SecOpts defines the security parameters
	SecOpts *SecureOptions
	// KaOpts defines the keepalive parameters
	KaOpts *KeepaliveOptions
	// StreamInterceptors specifies a list of interceptors to apply to
	// streaming RPCs.  They are executed in order.
	StreamInterceptors []grpc.StreamServerInterceptor
	// UnaryInterceptors specifies a list of interceptors to apply to unary
	// RPCs.  They are executed in order.
	UnaryInterceptors []grpc.UnaryServerInterceptor
	// Logger specifies the logger the server will use
	Logger *flogging.FabricLogger
	// ServerStatsHandler should be set if metrics on connections are to be reported.
	ServerStatsHandler *ServerStatsHandler
}

ServerConfig defines the parameters for configuring a GRPCServer instance

type ServerStatsHandler 

type ServerStatsHandler struct {
	OpenConnCounter   metrics.Counter
	ClosedConnCounter metrics.Counter
}

func NewServerStatsHandler 

func NewServerStatsHandler(p metrics.Provider) *ServerStatsHandler

func (*ServerStatsHandler) HandleConn 

func (h *ServerStatsHandler) HandleConn(ctx context.Context, s stats.ConnStats)

func (*ServerStatsHandler) HandleRPC 

func (h *ServerStatsHandler) HandleRPC(ctx context.Context, s stats.RPCStats)

func (*ServerStatsHandler) TagConn 

func (h *ServerStatsHandler) TagConn(ctx context.Context, info *stats.ConnTagInfo) context.Context

func (*ServerStatsHandler) TagRPC 

func (h *ServerStatsHandler) TagRPC(ctx context.Context, info *stats.RPCTagInfo) context.Context

type TLSOption 

type TLSOption func(tlsConfig *tls.Config)

TLSOption changes the given TLS config

type Throttle 

type Throttle struct {
	// contains filtered or unexported fields
}

func NewThrottle 

func NewThrottle(maxConcurrency int, options ...ThrottleOption) *Throttle

func (*Throttle) StreamServerInterceptor 

func (t *Throttle) StreamServerInterceptor(srv interface{}, ss grpc.ServerStream, info *grpc.StreamServerInfo, handler grpc.StreamHandler) error

func (*Throttle) UnaryServerIntercptor 

func (t *Throttle) UnaryServerIntercptor(ctx context.Context, req interface{}, info *grpc.UnaryServerInfo, handler grpc.UnaryHandler) (interface{}, error)

type ThrottleOption 

type ThrottleOption func(t *Throttle)

func WithNewSemaphore 

func WithNewSemaphore(newSemaphore NewSemaphoreFunc) ThrottleOption

Source Files

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Directories

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