lotus/lib/consensus/raft/interfaces.go
2022-09-12 16:10:15 -04:00

51 lines
1.8 KiB
Go

package consensus
import (
"context"
consensus "github.com/libp2p/go-libp2p-consensus"
rpc "github.com/libp2p/go-libp2p-gorpc"
"github.com/libp2p/go-libp2p/core/peer"
)
// Component represents a piece of ipfscluster. Cluster components
// usually run their own goroutines (a http server for example). They
// communicate with the main Cluster component and other components
// (both local and remote), using an instance of rpc.Client.
type Component interface {
SetClient(*rpc.Client)
Shutdown(context.Context) error
}
type ConsensusAPI interface {
Component
// Returns a channel to signal that the consensus layer is ready
// allowing the main component to wait for it during start.
Ready(context.Context) <-chan struct{}
AddPeer(context.Context, peer.ID) error
RmPeer(context.Context, peer.ID) error
State(context.Context) (consensus.State, error)
// Provide a node which is responsible to perform
// specific tasks which must only run in 1 cluster peer.
Leader(context.Context) (peer.ID, error)
// Only returns when the consensus state has all log
// updates applied to it.
WaitForSync(context.Context) error
// Clean removes all consensus data.
Clean(context.Context) error
// Peers returns the peerset participating in the Consensus.
Peers(context.Context) ([]peer.ID, error)
// IsTrustedPeer returns true if the given peer is "trusted".
// This will grant access to more rpc endpoints and a
// non-trusted one. This should be fast as it will be
// called repeatedly for every remote RPC request.
IsTrustedPeer(context.Context, peer.ID) bool
// Trust marks a peer as "trusted".
Trust(context.Context, peer.ID) error
// Distrust removes a peer from the "trusted" set.
Distrust(context.Context, peer.ID) error
// Returns true if current node is the cluster leader
IsLeader(ctx context.Context) bool
}