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v1.1.5 Latest Latest
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 Go to latest Published: Apr 27, 2022 License: Apache-2.0, MIT Imports: 23 Imported by: 0

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Index

Constants

View Source 
const MaxSyncBuffer = 100

MaxSyncBuffer is the maximum number of queued rounds when syncing

Variables

This section is empty.

Functions

func RemoteAddress added in v1.1.2 

func RemoteAddress(c context.Context) string

RemoteAddress returns the address of the peer by first taking the address that gRPC returns. If that address is a reserved address, then it tries to read the "X-REAL-IP" header content. For example, a valid nging config could include

``` 

location / {
      grpc_pass grpc://127.0.0.1:9091;
      grpc_set_header X-Real-IP $remote_addr;
}

```

Types

type CallOption added in v0.3.7 

type CallOption = grpc.CallOption

CallOption is simply a wrapper around the grpc options

type CertManager added in v0.3.7 

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

CertManager is used to managed certificates. It is most commonly used for testing with self signed certificate. By default, it returns the bundled set of certificates coming with the OS (Go's implementation).

func NewCertManager added in v0.3.7 

func NewCertManager() *CertManager

NewCertManager returns a cert manager filled with the trusted certificates of the running system

func (*CertManager) Add added in v0.3.7 

func (p *CertManager) Add(certPath string) error

Add tries to add the certificate at the given path to the pool and returns an error otherwise

func (*CertManager) Pool added in v0.3.7 

func (p *CertManager) Pool() *x509.CertPool

Pool returns the pool of trusted certificates

type Client 

type Client interface {
	ProtocolClient
	PublicClient
	HTTPClient
}

Client implements methods to call on the protocol API and the public API of a drand node

func NewGrpcClient 

func NewGrpcClient(opts ...grpc.DialOption) Client

NewGrpcClient returns an implementation of an InternalClient and ExternalClient using gRPC connections

func NewGrpcClientFromCertManager added in v0.3.7 

func NewGrpcClientFromCertManager(c *CertManager, opts ...grpc.DialOption) Client

NewGrpcClientFromCertManager returns a Client using gRPC with the given trust store of certificates.

func NewGrpcClientWithTimeout added in v0.3.6 

func NewGrpcClientWithTimeout(timeout time.Duration, opts ...grpc.DialOption) Client

NewGrpcClientWithTimeout returns a Client using gRPC using fixed timeout for method calls.

type ControlClient added in v0.4.0 

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

ControlClient is a struct that implement control.ControlClient and is used to request a Share to a ControlListener on a specific port

func NewControlClient added in v0.4.0 

func NewControlClient(addr string) (*ControlClient, error)

NewControlClient creates a client capable of issuing control commands to a localhost running drand node.

func (*ControlClient) ChainInfo added in v1.1.2 

func (c *ControlClient) ChainInfo() (*control.ChainInfoPacket, error)

ChainInfo returns the collective key of the remote node

func (*ControlClient) GroupFile added in v0.5.5 

func (c *ControlClient) GroupFile() (*control.GroupPacket, error)

GroupFile returns the group file that the drand instance uses at the current time

func (*ControlClient) InitDKG added in v0.4.0 

func (c *ControlClient) InitDKG(leader Peer, entropy *control.EntropyInfo, secret string) (*control.GroupPacket, error)

InitDKG sets up the node to be ready for a first DKG protocol.

func (*ControlClient) InitDKGLeader added in v1.1.2 

func (c *ControlClient) InitDKGLeader(nodes, threshold int,
	beaconPeriod, catchupPeriod, timeout time.Duration,
	entropy *control.EntropyInfo,
	secret string,
	offset int) (*control.GroupPacket, error)

InitDKGLeader sets up the node to be ready for a first DKG protocol. groupPart NOTE: only group referral via filesystem path is supported at the moment. XXX Might be best to move to core/

func (*ControlClient) InitReshare added in v0.4.0 

func (c *ControlClient) InitReshare(leader Peer, secret, oldPath string, force bool) (*control.GroupPacket, error)

InitReshare sets up the node to be ready for a resharing protocol.

func (*ControlClient) InitReshareLeader added in v1.1.2 

func (c *ControlClient) InitReshareLeader(
	nodes, threshold int,
	timeout, catchupPeriod time.Duration,
	secret, oldPath string,
	offset int) (*control.GroupPacket, error)

InitReshareLeader sets up the node to be ready for a resharing protocol. NOTE: only group referral via filesystem path is supported at the moment. XXX Might be best to move to core/

func (*ControlClient) Ping added in v0.4.0 

func (c *ControlClient) Ping() error

Ping the drand daemon to check if it's up and running

func (*ControlClient) PrivateKey added in v0.4.0 

func (c *ControlClient) PrivateKey() (*control.PrivateKeyResponse, error)

PrivateKey returns the private key of the remote node

func (*ControlClient) PublicKey added in v0.4.0 

func (c *ControlClient) PublicKey() (*control.PublicKeyResponse, error)

PublicKey returns the public key of the remote node

func (*ControlClient) Share added in v0.4.0 

func (c *ControlClient) Share() (*control.ShareResponse, error)

Share returns the share of the remote node

func (*ControlClient) Shutdown added in v0.5.5 

func (c *ControlClient) Shutdown() (*control.ShutdownResponse, error)

Shutdown stops the daemon

func (*ControlClient) StartFollowChain added in v1.1.2 

func (c *ControlClient) StartFollowChain(cc ctx.Context,
	hash string,
	nodes []string,
	tls bool,
	upTo uint64) (outCh chan *control.FollowProgress,
	errCh chan error, e error)

StartFollowChain initates the client catching up on an existing chain it is not part of

type ControlListener added in v0.4.0 

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

ControlListener is used to keep state of the connections of our drand instance

func NewTCPGrpcControlListener added in v0.4.0 

func NewTCPGrpcControlListener(s control.ControlServer, controlAddr string) ControlListener

NewTCPGrpcControlListener registers the pairing between a ControlServer and a grpx server

func (*ControlListener) Start added in v0.4.0 

func (g *ControlListener) Start()

Start the listener for the control commands

func (*ControlListener) Stop added in v0.4.0 

func (g *ControlListener) Stop()

Stop the listener and connections

type DefaultControlServer added in v0.4.0 

type DefaultControlServer struct {
	C control.ControlServer
}

DefaultControlServer implements the functionalities of Control Service, and just as Default Service, it is used for testing.

func (*DefaultControlServer) ChainInfo added in v1.1.2 

func (s *DefaultControlServer) ChainInfo(c ctx.Context, in *control.ChainInfoRequest) (*control.ChainInfoPacket, error)

ChainInfo gets the current chain information from the ndoe

func (*DefaultControlServer) PingPong added in v0.4.0 

func (s *DefaultControlServer) PingPong(c ctx.Context, in *control.Ping) (*control.Pong, error)

PingPong sends aping to the server

func (*DefaultControlServer) PrivateKey added in v0.4.0 

func (s *DefaultControlServer) PrivateKey(c ctx.Context, in *control.PrivateKeyRequest) (*control.PrivateKeyResponse, error)

PrivateKey gets the node's private key

func (*DefaultControlServer) PublicKey added in v0.4.0 

func (s *DefaultControlServer) PublicKey(c ctx.Context, in *control.PublicKeyRequest) (*control.PublicKeyResponse, error)

PublicKey gets the node's public key

func (*DefaultControlServer) Share added in v0.4.0 

func (s *DefaultControlServer) Share(c ctx.Context, in *control.ShareRequest) (*control.ShareResponse, error)

Share initiates a share request

type HTTPClient added in v1.1.2 

type HTTPClient interface {
	HandleHTTP(p Peer) (http.Handler, error)
}

HTTPClient is an optional extension to the protocol client relaying of HTTP over the GRPC connection. it is currently used for relaying metrics between group members.

type HexJSON added in v0.4.0 

type HexJSON struct{}

HexJSON transforms json into hex string instead of b64

func (*HexJSON) ContentType added in v0.4.0 

func (*HexJSON) ContentType() string

ContentType always Returns "application/json".

func (*HexJSON) Delimiter added in v0.4.0 

func (j *HexJSON) Delimiter() []byte

Delimiter for newline encoded JSON streams.

func (*HexJSON) Marshal added in v0.4.0 

func (j *HexJSON) Marshal(v interface{}) ([]byte, error)

Marshal marshals "v" into JSON

func (*HexJSON) NewDecoder added in v0.4.0 

func (j *HexJSON) NewDecoder(r io.Reader) runtime.Decoder

NewDecoder returns a Decoder which reads JSON stream from "r".

func (*HexJSON) NewEncoder added in v0.4.0 

func (j *HexJSON) NewEncoder(w io.Writer) runtime.Encoder

NewEncoder returns an Encoder which writes JSON stream into "w".

func (*HexJSON) Unmarshal added in v0.4.0 

func (j *HexJSON) Unmarshal(data []byte, v interface{}) error

Unmarshal unmarshals JSON data into "v".

type Listener 

type Listener interface {
	Start()
	Stop(ctx context.Context)
	Addr() string
}

Listener is the active listener for incoming requests.

func NewGRPCListenerForPrivate added in v1.1.2 

func NewGRPCListenerForPrivate(
	ctx context.Context,
	bindingAddr, certPath, keyPath string,
	s Service,
	insecure bool,
	opts ...grpc.ServerOption) (Listener, error)

NewGRPCListenerForPrivate creates a new listener for the Public and Protocol APIs over GRPC.

func NewRESTListenerForPublic added in v1.1.2 

func NewRESTListenerForPublic(
	ctx context.Context,
	bindingAddr, certPath, keyPath string,
	handler http.Handler,
	insecure bool) (Listener, error)

NewRESTListenerForPublic creates a new listener for the Public API over REST with TLS.

type Peer 

type Peer interface {
	Address() string
	IsTLS() bool
}

Peer is a simple interface that allows retrieving the address of a destination. It might further be enhanced with certificates properties and all.

func CreatePeer added in v1.1.2 

func CreatePeer(addr string, tls bool) Peer

CreatePeer creates a peer from an address

type PrivateGateway added in v1.1.2 

type PrivateGateway struct {
	Listener
	ProtocolClient
	PublicClient
}

PrivateGateway is the main interface to communicate to other drand nodes. It acts as a listener to receive incoming requests and acts a client connecting to drand particpants. The gateway fixes all drand functionalities offered by drand.

func NewGRPCPrivateGateway added in v1.1.2 

func NewGRPCPrivateGateway(ctx context.Context,
	listen, certPath, keyPath string,
	certs *CertManager,
	s Service,
	insecure bool,
	opts ...grpc.DialOption) (*PrivateGateway, error)

NewGRPCPrivateGateway returns a grpc gateway listening on "listen" for the public methods, listening on "port" for the control methods, using the given Service s with the given options.

func (*PrivateGateway) StartAll added in v1.1.2 

func (g *PrivateGateway) StartAll()

StartAll starts the control and public functionalities of the node

func (*PrivateGateway) StopAll added in v1.1.2 

func (g *PrivateGateway) StopAll(ctx context.Context)

StopAll stops the control and public functionalities of the node

type ProtocolClient added in v0.5.5 

type ProtocolClient interface {
	GetIdentity(ctx context.Context, p Peer, in *drand.IdentityRequest, opts ...CallOption) (*drand.Identity, error)
	SyncChain(ctx context.Context, p Peer, in *drand.SyncRequest, opts ...CallOption) (chan *drand.BeaconPacket, error)
	PartialBeacon(ctx context.Context, p Peer, in *drand.PartialBeaconPacket, opts ...CallOption) error
	BroadcastDKG(c context.Context, p Peer, in *drand.DKGPacket, opts ...CallOption) error
	SignalDKGParticipant(ctx context.Context, p Peer, in *drand.SignalDKGPacket, opts ...CallOption) error
	PushDKGInfo(ctx context.Context, p Peer, in *drand.DKGInfoPacket, opts ...grpc.CallOption) error
}

ProtocolClient holds all the methods of the protocol API that drand protocols use. See protobuf/drand/protocol.proto for more information.

type PublicClient added in v0.5.5 

type PublicClient interface {
	PublicRandStream(ctx context.Context, p Peer, in *drand.PublicRandRequest, opts ...CallOption) (chan *drand.PublicRandResponse, error)
	PublicRand(ctx context.Context, p Peer, in *drand.PublicRandRequest) (*drand.PublicRandResponse, error)
	PrivateRand(ctx context.Context, p Peer, in *drand.PrivateRandRequest) (*drand.PrivateRandResponse, error)
	ChainInfo(ctx context.Context, p Peer, in *drand.ChainInfoRequest) (*drand.ChainInfoPacket, error)
	Home(ctx context.Context, p Peer, in *drand.HomeRequest) (*drand.HomeResponse, error)
}

PublicClient holds all the methods of the public API . See `protobuf/drand/public.proto` for more information.

type PublicGateway added in v1.1.2 

type PublicGateway struct {
	Listener
}

PublicGateway is the main interface to communicate to users. The gateway fixes all drand functionalities offered by drand.

func NewRESTPublicGateway added in v1.1.2 

func NewRESTPublicGateway(
	ctx context.Context,
	listen, certPath, keyPath string,
	certs *CertManager,
	handler http.Handler,
	insecure bool) (*PublicGateway, error)

NewRESTPublicGateway returns a grpc gateway listening on "listen" for the public methods, listening on "port" for the control methods, using the given Service s with the given options.

func (*PublicGateway) StartAll added in v1.1.2 

func (g *PublicGateway) StartAll()

StartAll starts the control and public functionalities of the node

func (*PublicGateway) StopAll added in v1.1.2 

func (g *PublicGateway) StopAll(ctx context.Context)

StopAll stops the control and public functionalities of the node

type Service 

type Service interface {
	drand.PublicServer
	drand.ControlServer
	drand.ProtocolServer
}

Service holds all functionalities that a drand node should implement

Source Files

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