committee

package
v0.2012.7 Latest Latest
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 Go to latest Published: Apr 23, 2021 License: Apache-2.0 Imports: 35 Imported by: 0

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Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func TagForCommittee added in v0.2012.0 

func TagForCommittee(kind scheduler.CommitteeKind) string

TagForCommittee returns node lookup tag for scheduler committee kind.

Types

type AccessPolicy 

type AccessPolicy struct {
	Actions []accessctl.Action
}

AccessPolicy defines a list of actions that are allowed by the policy.

func (AccessPolicy) AddPublicKeyPolicy 

func (ap AccessPolicy) AddPublicKeyPolicy(policy *accessctl.Policy, pubKey signature.PublicKey)

AddPublicKeyPolicy augments the given policy by allowing actions in the current AccessPolicy to given TLS public key.

func (AccessPolicy) AddRulesForCommittee 

func (ap AccessPolicy) AddRulesForCommittee(policy *accessctl.Policy, committee *CommitteeInfo, nodes nodes.NodeDescriptorLookup)

AddRulesForCommittee augments the given policy by allowing actions in the current AccessPolicy for the nodes in the given committee.

func (AccessPolicy) AddRulesForNodeRoles 

func (ap AccessPolicy) AddRulesForNodeRoles(
	policy *accessctl.Policy,
	nodes []*node.Node,
	roles node.RolesMask,
)

AddRulesForNodeRoles augments the given policy by allowing actions in the current AccessPolicy for the nodes that have the given roles mask.

type CommitteeInfo 

type CommitteeInfo struct {
	Role       scheduler.Role
	Committee  *scheduler.Committee
	PublicKeys map[signature.PublicKey]bool
}

CommitteeInfo contains information about a committee of nodes.

type EpochSnapshot 

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

EpochSnapshot is an immutable snapshot of epoch state.

func (*EpochSnapshot) GetEpochNumber 

func (e *EpochSnapshot) GetEpochNumber() api.EpochTime

GetEpochNumber returns the sequential number of the epoch.

func (*EpochSnapshot) GetExecutorCommittee added in v0.2010.0 

func (e *EpochSnapshot) GetExecutorCommittee() *CommitteeInfo

GetExecutorCommittee returns the current executor committee.

func (*EpochSnapshot) GetGroupVersion 

func (e *EpochSnapshot) GetGroupVersion() int64

GetGroupVersion returns the consensus backend block height of the last processed committee election.

func (*EpochSnapshot) GetRuntime 

func (e *EpochSnapshot) GetRuntime() *registry.Runtime

GetRuntime returns the current runtime descriptor.

func (*EpochSnapshot) GetStorageCommittee 

func (e *EpochSnapshot) GetStorageCommittee() *CommitteeInfo

GetStorageCommittee returns the current storage committee.

func (*EpochSnapshot) IsExecutorBackupWorker 

func (e *EpochSnapshot) IsExecutorBackupWorker() bool

IsExecutorBackupWorker checks if the current node is a backup worker of the executor committee in the current epoch.

func (*EpochSnapshot) IsExecutorMember 

func (e *EpochSnapshot) IsExecutorMember() bool

IsExecutorMember checks if the current node is a member of the executor committee in the current epoch.

func (*EpochSnapshot) IsExecutorWorker 

func (e *EpochSnapshot) IsExecutorWorker() bool

IsExecutorWorker checks if the current node is a worker of the executor committee in the current epoch.

func (*EpochSnapshot) IsTransactionScheduler added in v0.2010.0 

func (e *EpochSnapshot) IsTransactionScheduler(round uint64) bool

IsTransactionScheduler checks if the current node is a a transaction scheduler at the specific runtime round.

func (*EpochSnapshot) Node 

func (e *EpochSnapshot) Node(ctx context.Context, id signature.PublicKey) (*node.Node, error)

Node looks up a node descriptor.

Implements commitment.NodeLookup.

func (*EpochSnapshot) Nodes 

func (e *EpochSnapshot) Nodes() nodes.NodeDescriptorLookup

Nodes returns a node descriptor lookup interface.

func (*EpochSnapshot) VerifyCommitteeSignatures 

func (e *EpochSnapshot) VerifyCommitteeSignatures(kind scheduler.CommitteeKind, sigs []signature.Signature) error

VerifyCommitteeSignatures verifies that the given signatures come from the current committee members of the given kind.

Implements commitment.SignatureVerifier.

func (*EpochSnapshot) VerifyTxnSchedulerSignature added in v0.2010.0 

func (e *EpochSnapshot) VerifyTxnSchedulerSignature(sig signature.Signature, round uint64) error

VerifyTxnSchedulerSignature verifies transaction scheduler signature.

Implements commitment.SignatureVerifier.

type Group 

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

Group encapsulates communication with a group of nodes in the runtime committees.

func NewGroup 

func NewGroup(
	ctx context.Context,
	identity *identity.Identity,
	runtime runtimeRegistry.Runtime,
	handler MessageHandler,
	consensus consensus.Backend,
	p2p *p2p.P2P,
) (*Group, error)

NewGroup creates a new group.

func (*Group) AuthenticatePeer 

func (g *Group) AuthenticatePeer(peerID signature.PublicKey, msg *p2p.Message) error

AuthenticatePeer handles authenticating a peer that send an incoming message.

func (*Group) EpochTransition 

func (g *Group) EpochTransition(ctx context.Context, height int64) error

EpochTransition processes an epoch transition that just happened.

func (*Group) GetEpochSnapshot 

func (g *Group) GetEpochSnapshot() *EpochSnapshot

GetEpochSnapshot returns a snapshot of the currently active epoch.

func (*Group) HandlePeerMessage 

func (g *Group) HandlePeerMessage(unusedPeerID signature.PublicKey, msg *p2p.Message, isOwn bool) error

HandlePeerMessage handles an incoming message from a peer.

func (*Group) Nodes 

func (g *Group) Nodes() nodes.NodeDescriptorLookup

Nodes returns a node descriptor lookup interface that watches all nodes in our committees.

func (*Group) Peers added in v0.2010.0 

func (g *Group) Peers() []string

Peers returns a list of connected P2P peers.

func (*Group) Publish added in v0.2010.0 

func (g *Group) Publish(spanCtx opentracing.SpanContext, msg *p2p.Message) error

Publish publishes a message to the P2P network.

func (*Group) RoundTransition 

func (g *Group) RoundTransition()

RoundTransition processes a round transition that just happened.

func (*Group) Storage added in v0.2010.0 

func (g *Group) Storage() storage.Backend

Storage returns the storage client backend that talks to the runtime group.

func (*Group) Suspend 

func (g *Group) Suspend(ctx context.Context)

Suspend processes a runtime suspension that just happened.

Resumption will be processed as a regular epoch transition.

type MessageHandler 

type MessageHandler interface {
	// HandlePeerMessage handles a message that has already been authenticated to come from a
	// registered node.
	//
	// The provided context is short-lived so if the handler needs to perform additional work, that
	// should be dispatched to a separate goroutine and not block delivery.
	HandlePeerMessage(ctx context.Context, msg *p2p.Message, isOwn bool) error
}

MessageHandler handles messages from other nodes.

type Node 

type Node struct {
	Runtime runtimeRegistry.Runtime

	Identity         *identity.Identity
	KeyManager       keymanagerApi.Backend
	KeyManagerClient *keymanagerClient.Client
	Consensus        consensus.Backend
	Group            *Group

	// Mutable and shared between nodes' workers.
	// Guarded by .CrossNode.
	CrossNode          sync.Mutex
	CurrentBlock       *block.Block
	CurrentBlockHeight int64
	Height             int64
	// contains filtered or unexported fields
}

Node is a committee node.

func NewNode 

func NewNode(
	runtime runtimeRegistry.Runtime,
	identity *identity.Identity,
	keymanager keymanagerApi.Backend,
	consensus consensus.Backend,
	p2p *p2p.P2P,
) (*Node, error)

func (*Node) AddHooks 

func (n *Node) AddHooks(hooks NodeHooks)

AddHooks adds a NodeHooks to be called. There is no going back.

func (*Node) Cleanup 

func (n *Node) Cleanup()

Cleanup performs the service specific post-termination cleanup.

func (*Node) GetRuntime 

func (n *Node) GetRuntime() runtimeRegistry.Runtime

Implements RuntimeHostHandlerFactory.

func (*Node) GetStatus added in v0.2010.0 

func (n *Node) GetStatus(ctx context.Context) (*api.Status, error)

GetStatus returns the common committee node status.

func (*Node) HandlePeerMessage 

func (n *Node) HandlePeerMessage(ctx context.Context, message *p2p.Message, isOwn bool) error

HandlePeerMessage forwards a message from the group system to our hooks.

func (*Node) Initialized 

func (n *Node) Initialized() <-chan struct{}

Initialized returns a channel that will be closed when the node is initialized and ready to service requests.

func (*Node) Name 

func (n *Node) Name() string

Name returns the service name.

func (*Node) NewNotifier 

func (n *Node) NewNotifier(ctx context.Context, host host.Runtime) protocol.Notifier

Implements RuntimeHostHandlerFactory.

func (*Node) NewRuntimeHostHandler 

func (n *Node) NewRuntimeHostHandler() protocol.Handler

Implements RuntimeHostHandlerFactory.

func (*Node) Quit 

func (n *Node) Quit() <-chan struct{}

Quit returns a channel that will be closed when the service terminates.

func (*Node) Start 

func (n *Node) Start() error

Start starts the service.

func (*Node) Stop 

func (n *Node) Stop()

Stop halts the service.

type NodeHooks 

type NodeHooks interface {
	HandlePeerMessage(context.Context, *p2p.Message, bool) (bool, error)
	// Guarded by CrossNode.
	HandleEpochTransitionLocked(*EpochSnapshot)
	// Guarded by CrossNode.
	HandleNewBlockEarlyLocked(*block.Block)
	// Guarded by CrossNode.
	HandleNewBlockLocked(*block.Block)
	// Guarded by CrossNode.
	HandleNewEventLocked(*roothash.Event)
	// Guarded by CrossNode.
	HandleNodeUpdateLocked(*nodes.NodeUpdate, *EpochSnapshot)
}

NodeHooks defines a worker's duties at common events. These are called from the runtime's common node's worker.

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