coord

package
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 Go to latest Published: May 11, 2026 License: Apache-2.0 Imports: 26 Imported by: 0

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Constants

View Source 
const LeaseRenewalInterval = 250 * time.Millisecond

LeaseRenewalInterval is the default interval between lease renewals.

View Source 
const LeaseStaleThreshold = time.Second

LeaseStaleThreshold is the duration after which a lease is considered stale.

View Source 
const SRPCCoordinatorServiceServiceID = "coord.CoordinatorService"
View Source 
const SRPCParticipantServiceServiceID = "coord.ParticipantService"

Variables

View Source 
var (
	ParticipantRole_name = map[int32]string{
		0: "ParticipantRole_UNKNOWN",
		1: "ParticipantRole_LEADER",
		2: "ParticipantRole_FOLLOWER",
	}
	ParticipantRole_value = map[string]int32{
		"ParticipantRole_UNKNOWN":  0,
		"ParticipantRole_LEADER":   1,
		"ParticipantRole_FOLLOWER": 2,
	}
)

Enum value maps for ParticipantRole.

Functions

func DeleteLease 

func DeleteLease(tx *bdb.Tx) error

DeleteLease removes the leader lease record.

func DeleteParticipant 

func DeleteParticipant(tx *bdb.Tx, pid uint32) error

DeleteParticipant removes a participant record by PID from a bbolt write transaction.

func NewSRPCCoordinatorServiceHandler 

func NewSRPCCoordinatorServiceHandler(impl SRPCCoordinatorServiceServer, serviceID string) srpc.Handler

NewSRPCCoordinatorServiceHandler constructs a new RPC handler. serviceID: if empty, uses default: coord.CoordinatorService

func NewSRPCParticipantServiceHandler 

func NewSRPCParticipantServiceHandler(impl SRPCParticipantServiceServer, serviceID string) srpc.Handler

NewSRPCParticipantServiceHandler constructs a new RPC handler. serviceID: if empty, uses default: coord.ParticipantService

func PutLease 

func PutLease(tx *bdb.Tx, rec *LeaseRecord) error

PutLease writes the leader lease record to the coordination bucket.

func PutParticipant 

func PutParticipant(tx *bdb.Tx, rec *ParticipantRecord) error

PutParticipant writes a participant record to the registry within a bbolt write transaction. The record is keyed by PID.

func SRPCRegisterCoordinatorService 

func SRPCRegisterCoordinatorService(mux srpc.Mux, impl SRPCCoordinatorServiceServer) error

SRPCRegisterCoordinatorService registers the implementation with the mux. Uses the default serviceID: coord.CoordinatorService

func SRPCRegisterParticipantService 

func SRPCRegisterParticipantService(mux srpc.Mux, impl SRPCParticipantServiceServer) error

SRPCRegisterParticipantService registers the implementation with the mux. Uses the default serviceID: coord.ParticipantService

Types

type Coordinator 

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

Coordinator manages the full lifecycle: participant registry, leader election, heartbeat, SRPC mesh, and role change notifications.

func NewCoordinator 

func NewCoordinator(
	le *logrus.Entry,
	db *bdb.DB,
	dir string,
	caps []string,
	handler RoleChangeHandler,
) *Coordinator

NewCoordinator creates a new coordinator. The dir is used for the SRPC socket (coord-{pid}.sock). Call Run to start the lifecycle.

func (*Coordinator) CountParticipants 

func (c *Coordinator) CountParticipants() (int, error)

CountParticipants returns the number of alive participants in the registry. Useful after becoming leader to determine if this is a fresh session (only ourselves) or a re-election (other participants alive).

func (*Coordinator) GetElection 

func (c *Coordinator) GetElection() *Election

Election returns the election manager.

func (*Coordinator) GetMesh 

func (c *Coordinator) GetMesh() *Mesh

GetMesh returns the SRPC mesh for registering services and obtaining clients to remote participants.

func (*Coordinator) GetRegistry 

func (c *Coordinator) GetRegistry() *Registry

Registry returns the participant registry.

func (*Coordinator) GetWatcher 

func (c *Coordinator) GetWatcher() *ParticipantWatcher

Watcher returns the participant watcher.

func (*Coordinator) Role 

func (c *Coordinator) Role() ParticipantRole

Role returns the current role.

func (*Coordinator) Run 

func (c *Coordinator) Run(ctx context.Context) error

Run executes the coordinator lifecycle. Blocks until ctx is cancelled.

func (*Coordinator) WaitRole 

func (c *Coordinator) WaitRole(ctx context.Context) (ParticipantRole, error)

WaitRole waits until the coordinator has determined this process's role (leader or follower). Returns the role once known, or an error if ctx is cancelled before the role is determined.

type Election 

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

Election manages leader election via bbolt lease records.

func NewElection 

func NewElection(db *bdb.DB, socketPath string) *Election

NewElection creates a new election manager.

func (*Election) CurrentLeader 

func (e *Election) CurrentLeader() (*LeaseRecord, error)

CurrentLeader returns the current lease record, or nil if none exists.

func (*Election) IsLeader 

func (e *Election) IsLeader() (bool, error)

IsLeader returns true if this process currently holds the lease.

func (*Election) ReleaseLease 

func (e *Election) ReleaseLease() error

ReleaseLease deletes the lease record if this process is the leader. Called during graceful shutdown so followers detect the missing lease and trigger immediate election without waiting for staleness timeout.

func (*Election) RenewLease 

func (e *Election) RenewLease() (bool, error)

RenewLease updates the lease timestamp for the current leader. Returns false if this process is no longer the leader.

func (*Election) RunLeaseRenewal 

func (e *Election) RunLeaseRenewal(ctx context.Context) error

RunLeaseRenewal renews the lease periodically until ctx is cancelled or this process loses leadership. Returns nil on context cancellation.

func (*Election) TryClaimLeadership 

func (e *Election) TryClaimLeadership() (bool, error)

TryClaimLeadership attempts to claim leadership if no valid lease exists. Returns true if this process became the leader.

func (*Election) TryReelect 

func (e *Election) TryReelect() (bool, error)

TryReelect attempts to claim leadership when the current leader appears unreachable. Only succeeds if the lease is stale (timestamp older than LeaseStaleThreshold) or the leader PID is dead. The bbolt per-txn fcntl lock serializes competing re-election attempts from multiple followers.

type EngineFactory 

type EngineFactory func(ctx context.Context) (world.Engine, error)

EngineFactory creates a world engine when this process becomes leader. The ctx is cancelled when leadership is lost.

type FollowerEngine 

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

FollowerEngine provides a read-only world.Engine for follower processes. It watches the bbolt commit counter and calls SetRootRef on the underlying world_block.Engine when the leader commits changes.

func NewFollowerEngine 

func NewFollowerEngine(
	ctx context.Context,
	le *logrus.Entry,
	db *bdb.DB,
	baseCursor *bucket_lookup.Cursor,
	readHead ReadHeadRefFunc,
	lookupOp world.LookupOp,
) (*FollowerEngine, error)

NewFollowerEngine creates a follower engine. The baseCursor provides block storage access (same bbolt bucket/volume as the leader). readHead reads the current HEAD reference from the object store. lookupOp resolves operation types for world state construction.

func (*FollowerEngine) AccessWorldState 

func (f *FollowerEngine) AccessWorldState(
	ctx context.Context,
	ref *bucket.ObjectRef,
	cb func(*bucket_lookup.Cursor) error,
) error

AccessWorldState builds a bucket lookup cursor for reading world state.

func (*FollowerEngine) BuildStorageCursor 

func (f *FollowerEngine) BuildStorageCursor(ctx context.Context) (*bucket_lookup.Cursor, error)

BuildStorageCursor builds a cursor to the world storage.

func (*FollowerEngine) GetSeqno 

func (f *FollowerEngine) GetSeqno(ctx context.Context) (uint64, error)

GetSeqno returns the current world state sequence number.

func (*FollowerEngine) NewTransaction 

func (f *FollowerEngine) NewTransaction(ctx context.Context, write bool) (world.Tx, error)

NewTransaction returns a read-only transaction. Write transactions are not supported on followers; use the leader's SubmitWorldOp SRPC.

func (*FollowerEngine) Run 

func (f *FollowerEngine) Run(ctx context.Context) error

Run watches the commit counter and refreshes the engine root reference. Blocks until ctx is cancelled.

func (*FollowerEngine) WaitSeqno 

func (f *FollowerEngine) WaitSeqno(ctx context.Context, value uint64) (uint64, error)

WaitSeqno waits for the world state seqno to reach the given value.

type ForwardingWorldState 

type ForwardingWorldState struct {
	world.WorldState
	// contains filtered or unexported fields
}

ForwardingWorldState wraps a read-only WorldState and routes write operations (ApplyWorldOp) through the leader's SubmitWorldOp SRPC. Read operations go through the local follower engine directly.

func NewForwardingWorldState 

func NewForwardingWorldState(ws world.WorldState, client SRPCCoordinatorServiceClient) *ForwardingWorldState

NewForwardingWorldState creates a forwarding world state. The underlying WorldState should be backed by the follower engine (read-only). The client is used to forward write operations to the leader.

func (*ForwardingWorldState) ApplyWorldOp 

func (f *ForwardingWorldState) ApplyWorldOp(
	ctx context.Context,
	op world.Operation,
	sender peer.ID,
) (uint64, bool, error)

ApplyWorldOp serializes the operation and forwards it to the leader via SRPC. Returns the new seqno and any error from the leader.

func (*ForwardingWorldState) GetReadOnly 

func (f *ForwardingWorldState) GetReadOnly() bool

GetReadOnly returns false since this state supports writes (via forwarding).

type GetParticipantInfoRequest 

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

GetParticipantInfoRequest is the request for GetParticipantInfo.

func (*GetParticipantInfoRequest) CloneMessageVT 

func (m *GetParticipantInfoRequest) CloneMessageVT() protobuf_go_lite.CloneMessage

func (*GetParticipantInfoRequest) CloneVT 

func (m *GetParticipantInfoRequest) CloneVT() *GetParticipantInfoRequest

func (*GetParticipantInfoRequest) EqualMessageVT 

func (this *GetParticipantInfoRequest) EqualMessageVT(thatMsg any) bool

func (*GetParticipantInfoRequest) EqualVT 

func (this *GetParticipantInfoRequest) EqualVT(that *GetParticipantInfoRequest) bool

func (*GetParticipantInfoRequest) MarshalJSON 

func (x *GetParticipantInfoRequest) MarshalJSON() ([]byte, error)

MarshalJSON marshals the GetParticipantInfoRequest to JSON.

func (*GetParticipantInfoRequest) MarshalProtoJSON 

func (x *GetParticipantInfoRequest) MarshalProtoJSON(s *json.MarshalState)

MarshalProtoJSON marshals the GetParticipantInfoRequest message to JSON.

func (*GetParticipantInfoRequest) MarshalProtoText 

func (x *GetParticipantInfoRequest) MarshalProtoText() string

func (*GetParticipantInfoRequest) MarshalToSizedBufferVT 

func (m *GetParticipantInfoRequest) MarshalToSizedBufferVT(dAtA []byte) (int, error)

func (*GetParticipantInfoRequest) MarshalToVT 

func (m *GetParticipantInfoRequest) MarshalToVT(dAtA []byte) (int, error)

func (*GetParticipantInfoRequest) MarshalVT 

func (m *GetParticipantInfoRequest) MarshalVT() (dAtA []byte, err error)

func (*GetParticipantInfoRequest) ProtoMessage 

func (*GetParticipantInfoRequest) ProtoMessage()

func (*GetParticipantInfoRequest) Reset 

func (x *GetParticipantInfoRequest) Reset()

func (*GetParticipantInfoRequest) SizeVT 

func (m *GetParticipantInfoRequest) SizeVT() (n int)

func (*GetParticipantInfoRequest) String 

func (x *GetParticipantInfoRequest) String() string

func (*GetParticipantInfoRequest) UnmarshalJSON 

func (x *GetParticipantInfoRequest) UnmarshalJSON(b []byte) error

UnmarshalJSON unmarshals the GetParticipantInfoRequest from JSON.

func (*GetParticipantInfoRequest) UnmarshalProtoJSON 

func (x *GetParticipantInfoRequest) UnmarshalProtoJSON(s *json.UnmarshalState)

UnmarshalProtoJSON unmarshals the GetParticipantInfoRequest message from JSON.

func (*GetParticipantInfoRequest) UnmarshalVT 

func (m *GetParticipantInfoRequest) UnmarshalVT(dAtA []byte) error

type GetParticipantInfoResponse 

type GetParticipantInfoResponse struct {

	// Pid is the participant's process ID.
	Pid uint32 `protobuf:"varint,1,opt,name=pid,proto3" json:"pid,omitempty"`
	// Role is the participant's current role.
	Role ParticipantRole `protobuf:"varint,2,opt,name=role,proto3" json:"role,omitempty"`
	// Capabilities is the participant's capability set.
	Capabilities []string `protobuf:"bytes,3,rep,name=capabilities,proto3" json:"capabilities,omitempty"`
	// contains filtered or unexported fields
}

GetParticipantInfoResponse is the response for GetParticipantInfo.

func (*GetParticipantInfoResponse) CloneMessageVT 

func (m *GetParticipantInfoResponse) CloneMessageVT() protobuf_go_lite.CloneMessage

func (*GetParticipantInfoResponse) CloneVT 

func (m *GetParticipantInfoResponse) CloneVT() *GetParticipantInfoResponse

func (*GetParticipantInfoResponse) EqualMessageVT 

func (this *GetParticipantInfoResponse) EqualMessageVT(thatMsg any) bool

func (*GetParticipantInfoResponse) EqualVT 

func (this *GetParticipantInfoResponse) EqualVT(that *GetParticipantInfoResponse) bool

func (*GetParticipantInfoResponse) GetCapabilities 

func (x *GetParticipantInfoResponse) GetCapabilities() []string

func (*GetParticipantInfoResponse) GetPid 

func (x *GetParticipantInfoResponse) GetPid() uint32

func (*GetParticipantInfoResponse) GetRole 

func (x *GetParticipantInfoResponse) GetRole() ParticipantRole

func (*GetParticipantInfoResponse) MarshalJSON 

func (x *GetParticipantInfoResponse) MarshalJSON() ([]byte, error)

MarshalJSON marshals the GetParticipantInfoResponse to JSON.

func (*GetParticipantInfoResponse) MarshalProtoJSON 

func (x *GetParticipantInfoResponse) MarshalProtoJSON(s *json.MarshalState)

MarshalProtoJSON marshals the GetParticipantInfoResponse message to JSON.

func (*GetParticipantInfoResponse) MarshalProtoText 

func (x *GetParticipantInfoResponse) MarshalProtoText() string

func (*GetParticipantInfoResponse) MarshalToSizedBufferVT 

func (m *GetParticipantInfoResponse) MarshalToSizedBufferVT(dAtA []byte) (int, error)

func (*GetParticipantInfoResponse) MarshalToVT 

func (m *GetParticipantInfoResponse) MarshalToVT(dAtA []byte) (int, error)

func (*GetParticipantInfoResponse) MarshalVT 

func (m *GetParticipantInfoResponse) MarshalVT() (dAtA []byte, err error)

func (*GetParticipantInfoResponse) ProtoMessage 

func (*GetParticipantInfoResponse) ProtoMessage()

func (*GetParticipantInfoResponse) Reset 

func (x *GetParticipantInfoResponse) Reset()

func (*GetParticipantInfoResponse) SizeVT 

func (m *GetParticipantInfoResponse) SizeVT() (n int)

func (*GetParticipantInfoResponse) String 

func (x *GetParticipantInfoResponse) String() string

func (*GetParticipantInfoResponse) UnmarshalJSON 

func (x *GetParticipantInfoResponse) UnmarshalJSON(b []byte) error

UnmarshalJSON unmarshals the GetParticipantInfoResponse from JSON.

func (*GetParticipantInfoResponse) UnmarshalProtoJSON 

func (x *GetParticipantInfoResponse) UnmarshalProtoJSON(s *json.UnmarshalState)

UnmarshalProtoJSON unmarshals the GetParticipantInfoResponse message from JSON.

func (*GetParticipantInfoResponse) UnmarshalVT 

func (m *GetParticipantInfoResponse) UnmarshalVT(dAtA []byte) error

type LeaseRecord 

type LeaseRecord struct {

	// LeaderPid is the PID of the current leader process.
	LeaderPid uint32 `protobuf:"varint,1,opt,name=leader_pid,json=leaderPid,proto3" json:"leaderPid,omitempty"`
	// LeaseTimestampNanos is the last lease renewal time in nanoseconds.
	LeaseTimestampNanos int64 `protobuf:"varint,2,opt,name=lease_timestamp_nanos,json=leaseTimestampNanos,proto3" json:"leaseTimestampNanos,omitempty"`
	// LeaderSocketPath is the SRPC socket path of the leader.
	LeaderSocketPath string `protobuf:"bytes,3,opt,name=leader_socket_path,json=leaderSocketPath,proto3" json:"leaderSocketPath,omitempty"`
	// contains filtered or unexported fields
}

LeaseRecord is the leader election lease stored at _coord/leader.

func GetLease 

func GetLease(tx *bdb.Tx) (*LeaseRecord, error)

GetLease reads the leader lease record. Returns nil if no lease exists.

func (*LeaseRecord) CloneMessageVT 

func (m *LeaseRecord) CloneMessageVT() protobuf_go_lite.CloneMessage

func (*LeaseRecord) CloneVT 

func (m *LeaseRecord) CloneVT() *LeaseRecord

func (*LeaseRecord) EqualMessageVT 

func (this *LeaseRecord) EqualMessageVT(thatMsg any) bool

func (*LeaseRecord) EqualVT 

func (this *LeaseRecord) EqualVT(that *LeaseRecord) bool

func (*LeaseRecord) GetLeaderPid 

func (x *LeaseRecord) GetLeaderPid() uint32

func (*LeaseRecord) GetLeaderSocketPath 

func (x *LeaseRecord) GetLeaderSocketPath() string

func (*LeaseRecord) GetLeaseTimestampNanos 

func (x *LeaseRecord) GetLeaseTimestampNanos() int64

func (*LeaseRecord) MarshalJSON 

func (x *LeaseRecord) MarshalJSON() ([]byte, error)

MarshalJSON marshals the LeaseRecord to JSON.

func (*LeaseRecord) MarshalProtoJSON 

func (x *LeaseRecord) MarshalProtoJSON(s *json.MarshalState)

MarshalProtoJSON marshals the LeaseRecord message to JSON.

func (*LeaseRecord) MarshalProtoText 

func (x *LeaseRecord) MarshalProtoText() string

func (*LeaseRecord) MarshalToSizedBufferVT 

func (m *LeaseRecord) MarshalToSizedBufferVT(dAtA []byte) (int, error)

func (*LeaseRecord) MarshalToVT 

func (m *LeaseRecord) MarshalToVT(dAtA []byte) (int, error)

func (*LeaseRecord) MarshalVT 

func (m *LeaseRecord) MarshalVT() (dAtA []byte, err error)

func (*LeaseRecord) ProtoMessage 

func (*LeaseRecord) ProtoMessage()

func (*LeaseRecord) Reset 

func (x *LeaseRecord) Reset()

func (*LeaseRecord) SizeVT 

func (m *LeaseRecord) SizeVT() (n int)

func (*LeaseRecord) String 

func (x *LeaseRecord) String() string

func (*LeaseRecord) UnmarshalJSON 

func (x *LeaseRecord) UnmarshalJSON(b []byte) error

UnmarshalJSON unmarshals the LeaseRecord from JSON.

func (*LeaseRecord) UnmarshalProtoJSON 

func (x *LeaseRecord) UnmarshalProtoJSON(s *json.UnmarshalState)

UnmarshalProtoJSON unmarshals the LeaseRecord message from JSON.

func (*LeaseRecord) UnmarshalVT 

func (m *LeaseRecord) UnmarshalVT(dAtA []byte) error

type Mesh 

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

Mesh manages the cross-process SRPC mesh. Each participant listens on a Unix domain socket and connects to other participants discovered via the participant watcher.

func NewMesh 

func NewMesh(le *logrus.Entry, pid uint32, getRole func() ParticipantRole, caps []string) *Mesh

NewMesh creates a new SRPC mesh. The mux is used for both the local server and can have additional services registered on it.

func (*Mesh) Close 

func (m *Mesh) Close()

Close shuts down the mesh: closes all client connections, the listener, and removes the socket file.

func (*Mesh) Connect 

func (m *Mesh) Connect(ctx context.Context, pid uint32, socketPath string) (srpc.Client, error)

Connect dials a remote participant's Unix socket and establishes a Yamux + starpc client connection. Caches the connection by PID.

func (*Mesh) Disconnect 

func (m *Mesh) Disconnect(pid uint32)

Disconnect closes and removes the connection to a participant.

func (*Mesh) GetClient 

func (m *Mesh) GetClient(pid uint32) srpc.Client

GetClient returns the cached starpc client for a participant, or nil.

func (*Mesh) Listen 

func (m *Mesh) Listen(dir string) error

Listen creates a Unix domain socket listener at the given directory. The socket is named coord-{pid}.sock.

func (*Mesh) Mux 

func (m *Mesh) Mux() srpc.Mux

Mux returns the local SRPC mux for registering services.

func (*Mesh) Serve 

func (m *Mesh) Serve(ctx context.Context) error

Serve accepts connections on the listener. Blocks until ctx is cancelled.

func (*Mesh) SocketPath 

func (m *Mesh) SocketPath() string

SocketPath returns the path of the local Unix socket listener.

type ParticipantRecord 

type ParticipantRecord struct {

	// Pid is the OS process ID.
	Pid uint32 `protobuf:"varint,1,opt,name=pid,proto3" json:"pid,omitempty"`
	// Role is the participant's current role (leader or follower).
	Role ParticipantRole `protobuf:"varint,2,opt,name=role,proto3" json:"role,omitempty"`
	// StartTimeNanos is the monotonic start time in nanoseconds.
	StartTimeNanos int64 `protobuf:"varint,3,opt,name=start_time_nanos,json=startTimeNanos,proto3" json:"startTimeNanos,omitempty"`
	// Capabilities is the set of capabilities this participant advertises.
	Capabilities []string `protobuf:"bytes,4,rep,name=capabilities,proto3" json:"capabilities,omitempty"`
	// SrpcSocketPath is the Unix socket path for this participant's SRPC server.
	SrpcSocketPath string `protobuf:"bytes,5,opt,name=srpc_socket_path,json=srpcSocketPath,proto3" json:"srpcSocketPath,omitempty"`
	// LastHeartbeatNanos is the last heartbeat timestamp in nanoseconds.
	LastHeartbeatNanos int64 `protobuf:"varint,6,opt,name=last_heartbeat_nanos,json=lastHeartbeatNanos,proto3" json:"lastHeartbeatNanos,omitempty"`
	// contains filtered or unexported fields
}

ParticipantRecord is a participant entry in the coordination registry. Stored in the _coord/participants bbolt bucket keyed by PID string.

func GetParticipant 

func GetParticipant(tx *bdb.Tx, pid uint32) (*ParticipantRecord, error)

GetParticipant reads a participant record by PID from a bbolt transaction. Returns nil if the record does not exist.

func ListParticipants 

func ListParticipants(tx *bdb.Tx) ([]*ParticipantRecord, error)

ListParticipants returns all participant records in the registry.

func (*ParticipantRecord) CloneMessageVT 

func (m *ParticipantRecord) CloneMessageVT() protobuf_go_lite.CloneMessage

func (*ParticipantRecord) CloneVT 

func (m *ParticipantRecord) CloneVT() *ParticipantRecord

func (*ParticipantRecord) EqualMessageVT 

func (this *ParticipantRecord) EqualMessageVT(thatMsg any) bool

func (*ParticipantRecord) EqualVT 

func (this *ParticipantRecord) EqualVT(that *ParticipantRecord) bool

func (*ParticipantRecord) GetCapabilities 

func (x *ParticipantRecord) GetCapabilities() []string

func (*ParticipantRecord) GetLastHeartbeatNanos 

func (x *ParticipantRecord) GetLastHeartbeatNanos() int64

func (*ParticipantRecord) GetPid 

func (x *ParticipantRecord) GetPid() uint32

func (*ParticipantRecord) GetRole 

func (x *ParticipantRecord) GetRole() ParticipantRole

func (*ParticipantRecord) GetSrpcSocketPath 

func (x *ParticipantRecord) GetSrpcSocketPath() string

func (*ParticipantRecord) GetStartTimeNanos 

func (x *ParticipantRecord) GetStartTimeNanos() int64

func (*ParticipantRecord) MarshalJSON 

func (x *ParticipantRecord) MarshalJSON() ([]byte, error)

MarshalJSON marshals the ParticipantRecord to JSON.

func (*ParticipantRecord) MarshalProtoJSON 

func (x *ParticipantRecord) MarshalProtoJSON(s *json.MarshalState)

MarshalProtoJSON marshals the ParticipantRecord message to JSON.

func (*ParticipantRecord) MarshalProtoText 

func (x *ParticipantRecord) MarshalProtoText() string

func (*ParticipantRecord) MarshalToSizedBufferVT 

func (m *ParticipantRecord) MarshalToSizedBufferVT(dAtA []byte) (int, error)

func (*ParticipantRecord) MarshalToVT 

func (m *ParticipantRecord) MarshalToVT(dAtA []byte) (int, error)

func (*ParticipantRecord) MarshalVT 

func (m *ParticipantRecord) MarshalVT() (dAtA []byte, err error)

func (*ParticipantRecord) ProtoMessage 

func (*ParticipantRecord) ProtoMessage()

func (*ParticipantRecord) Reset 

func (x *ParticipantRecord) Reset()

func (*ParticipantRecord) SizeVT 

func (m *ParticipantRecord) SizeVT() (n int)

func (*ParticipantRecord) String 

func (x *ParticipantRecord) String() string

func (*ParticipantRecord) UnmarshalJSON 

func (x *ParticipantRecord) UnmarshalJSON(b []byte) error

UnmarshalJSON unmarshals the ParticipantRecord from JSON.

func (*ParticipantRecord) UnmarshalProtoJSON 

func (x *ParticipantRecord) UnmarshalProtoJSON(s *json.UnmarshalState)

UnmarshalProtoJSON unmarshals the ParticipantRecord message from JSON.

func (*ParticipantRecord) UnmarshalVT 

func (m *ParticipantRecord) UnmarshalVT(dAtA []byte) error

type ParticipantRole 

type ParticipantRole int32

ParticipantRole is the role of a participant in the coordination group. 

const (
	// ParticipantRole_UNKNOWN is the default unknown role.
	ParticipantRole_ParticipantRole_UNKNOWN ParticipantRole = 0
	// ParticipantRole_LEADER is the leader role.
	ParticipantRole_ParticipantRole_LEADER ParticipantRole = 1
	// ParticipantRole_FOLLOWER is the follower role.
	ParticipantRole_ParticipantRole_FOLLOWER ParticipantRole = 2
)

func (ParticipantRole) Enum 

func (x ParticipantRole) Enum() *ParticipantRole

func (ParticipantRole) MarshalJSON 

func (x ParticipantRole) MarshalJSON() ([]byte, error)

MarshalJSON marshals the ParticipantRole to JSON.

func (ParticipantRole) MarshalProtoJSON 

func (x ParticipantRole) MarshalProtoJSON(s *json.MarshalState)

MarshalProtoJSON marshals the ParticipantRole to JSON.

func (ParticipantRole) MarshalProtoText 

func (x ParticipantRole) MarshalProtoText() string

func (ParticipantRole) MarshalText 

func (x ParticipantRole) MarshalText() ([]byte, error)

MarshalText marshals the ParticipantRole to text.

func (ParticipantRole) String 

func (x ParticipantRole) String() string

func (*ParticipantRole) UnmarshalJSON 

func (x *ParticipantRole) UnmarshalJSON(b []byte) error

UnmarshalJSON unmarshals the ParticipantRole from JSON.

func (*ParticipantRole) UnmarshalProtoJSON 

func (x *ParticipantRole) UnmarshalProtoJSON(s *json.UnmarshalState)

UnmarshalProtoJSON unmarshals the ParticipantRole from JSON.

func (*ParticipantRole) UnmarshalText 

func (x *ParticipantRole) UnmarshalText(b []byte) error

UnmarshalText unmarshals the ParticipantRole from text.

type ParticipantWatcher 

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

ParticipantWatcher polls the participant registry keyed off commitCounter changes and maintains an in-memory snapshot of active participants.

func NewParticipantWatcher 

func NewParticipantWatcher(db *bdb.DB) *ParticipantWatcher

NewParticipantWatcher creates a new watcher.

func (*ParticipantWatcher) GetParticipants 

func (w *ParticipantWatcher) GetParticipants() []*ParticipantRecord

GetParticipants returns the current participant snapshot. Must be called inside bcast.HoldLock.

func (*ParticipantWatcher) Run 

func (w *ParticipantWatcher) Run(ctx context.Context) error

Run polls the participant registry using commitCounter for wake-up. Blocks until ctx is cancelled.

func (*ParticipantWatcher) WaitParticipants 

func (w *ParticipantWatcher) WaitParticipants(ctx context.Context, match func([]*ParticipantRecord) bool) ([]*ParticipantRecord, error)

WaitParticipants waits for the participant list to satisfy the given predicate. Returns the matching snapshot.

type ReadHeadRefFunc 

type ReadHeadRefFunc func(ctx context.Context) (*bucket.ObjectRef, error)

ReadHeadRefFunc reads the current HEAD reference for the world state. Called by the follower to refresh its view after a commit counter change.

type Registry 

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

Registry manages participant records in bbolt.

func NewRegistry 

func NewRegistry(db *bdb.DB) *Registry

NewRegistry creates a new participant registry.

func (*Registry) Deregister 

func (r *Registry) Deregister() error

Deregister removes the local participant record from the registry.

func (*Registry) Heartbeat 

func (r *Registry) Heartbeat() error

Heartbeat updates the local participant's last_heartbeat_nanos field.

func (*Registry) Register 

func (r *Registry) Register(role ParticipantRole, caps []string, socketPath string) error

Register writes the local participant record to the registry. Cleans up stale records from dead processes as a side effect.

func (*Registry) RunHeartbeat 

func (r *Registry) RunHeartbeat(ctx context.Context, interval time.Duration)

RunHeartbeat runs periodic heartbeats every interval until ctx is cancelled.

type RoleChangeHandler 

type RoleChangeHandler interface {
	// OnBecomeLeader is called when this process becomes the leader.
	// ctx is cancelled when leadership is lost.
	OnBecomeLeader(ctx context.Context) error
	// OnBecomeFollower is called when this process becomes a follower.
	// leaderSocketPath is the SRPC socket of the current leader.
	OnBecomeFollower(ctx context.Context, leaderSocketPath string) error
}

RoleChangeHandler is called when this process's role changes. The handler should start or stop services accordingly.

type SRPCCoordinatorServiceClient 

type SRPCCoordinatorServiceClient interface {
	// SRPCClient returns the underlying SRPC client.
	SRPCClient() srpc.Client

	// SubmitWorldOp submits a serialized world operation to the leader for
	// execution. Returns the new sequence number after commit.
	SubmitWorldOp(ctx context.Context, in *SubmitWorldOpRequest) (*SubmitWorldOpResponse, error)
	// WatchWorldSeqno streams world sequence number updates to followers.
	WatchWorldSeqno(ctx context.Context, in *WatchWorldSeqnoRequest) (SRPCCoordinatorService_WatchWorldSeqnoClient, error)
}

func NewSRPCCoordinatorServiceClient 

func NewSRPCCoordinatorServiceClient(cc srpc.Client) SRPCCoordinatorServiceClient

func NewSRPCCoordinatorServiceClientWithServiceID 

func NewSRPCCoordinatorServiceClientWithServiceID(cc srpc.Client, serviceID string) SRPCCoordinatorServiceClient

type SRPCCoordinatorServiceHandler 

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

func (SRPCCoordinatorServiceHandler) GetMethodIDs 

func (SRPCCoordinatorServiceHandler) GetMethodIDs() []string

func (*SRPCCoordinatorServiceHandler) GetServiceID 

func (d *SRPCCoordinatorServiceHandler) GetServiceID() string

func (*SRPCCoordinatorServiceHandler) InvokeMethod 

func (d *SRPCCoordinatorServiceHandler) InvokeMethod(
	serviceID, methodID string,
	strm srpc.Stream,
) (bool, error)

func (SRPCCoordinatorServiceHandler) InvokeMethod_SubmitWorldOp 

func (SRPCCoordinatorServiceHandler) InvokeMethod_SubmitWorldOp(impl SRPCCoordinatorServiceServer, strm srpc.Stream) error

func (SRPCCoordinatorServiceHandler) InvokeMethod_WatchWorldSeqno 

func (SRPCCoordinatorServiceHandler) InvokeMethod_WatchWorldSeqno(impl SRPCCoordinatorServiceServer, strm srpc.Stream) error

type SRPCCoordinatorServiceServer 

type SRPCCoordinatorServiceServer interface {
	// SubmitWorldOp submits a serialized world operation to the leader for
	// execution. Returns the new sequence number after commit.
	SubmitWorldOp(context.Context, *SubmitWorldOpRequest) (*SubmitWorldOpResponse, error)
	// WatchWorldSeqno streams world sequence number updates to followers.
	WatchWorldSeqno(*WatchWorldSeqnoRequest, SRPCCoordinatorService_WatchWorldSeqnoStream) error
}

func NewCoordinatorServiceServer 

func NewCoordinatorServiceServer(handler *WorldRoleHandler, lookupOp world.LookupOp) SRPCCoordinatorServiceServer

NewCoordinatorServiceServer creates a CoordinatorService SRPC server. The handler provides access to the world engine. The lookupOp resolves operation types when executing submitted transactions.

type SRPCCoordinatorService_SubmitWorldOpStream 

type SRPCCoordinatorService_SubmitWorldOpStream interface {
	srpc.Stream
}

type SRPCCoordinatorService_WatchWorldSeqnoClient 

type SRPCCoordinatorService_WatchWorldSeqnoClient interface {
	srpc.Stream
	Recv() (*WatchWorldSeqnoResponse, error)
	RecvTo(*WatchWorldSeqnoResponse) error
}

type SRPCCoordinatorService_WatchWorldSeqnoStream 

type SRPCCoordinatorService_WatchWorldSeqnoStream interface {
	srpc.Stream
	Send(*WatchWorldSeqnoResponse) error
	SendAndClose(*WatchWorldSeqnoResponse) error
}

type SRPCParticipantServiceClient 

type SRPCParticipantServiceClient interface {
	// SRPCClient returns the underlying SRPC client.
	SRPCClient() srpc.Client

	// GetParticipantInfo returns this participant's role and capabilities.
	GetParticipantInfo(ctx context.Context, in *GetParticipantInfoRequest) (*GetParticipantInfoResponse, error)
}

func NewSRPCParticipantServiceClient 

func NewSRPCParticipantServiceClient(cc srpc.Client) SRPCParticipantServiceClient

func NewSRPCParticipantServiceClientWithServiceID 

func NewSRPCParticipantServiceClientWithServiceID(cc srpc.Client, serviceID string) SRPCParticipantServiceClient

type SRPCParticipantServiceHandler 

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

func (SRPCParticipantServiceHandler) GetMethodIDs 

func (SRPCParticipantServiceHandler) GetMethodIDs() []string

func (*SRPCParticipantServiceHandler) GetServiceID 

func (d *SRPCParticipantServiceHandler) GetServiceID() string

func (*SRPCParticipantServiceHandler) InvokeMethod 

func (d *SRPCParticipantServiceHandler) InvokeMethod(
	serviceID, methodID string,
	strm srpc.Stream,
) (bool, error)

func (SRPCParticipantServiceHandler) InvokeMethod_GetParticipantInfo 

func (SRPCParticipantServiceHandler) InvokeMethod_GetParticipantInfo(impl SRPCParticipantServiceServer, strm srpc.Stream) error

type SRPCParticipantServiceServer 

type SRPCParticipantServiceServer interface {
	// GetParticipantInfo returns this participant's role and capabilities.
	GetParticipantInfo(context.Context, *GetParticipantInfoRequest) (*GetParticipantInfoResponse, error)
}

type SRPCParticipantService_GetParticipantInfoStream 

type SRPCParticipantService_GetParticipantInfoStream interface {
	srpc.Stream
}

type SubmitWorldOpRequest 

type SubmitWorldOpRequest struct {

	// OpData is the serialized world operation.
	OpData []byte `protobuf:"bytes,1,opt,name=op_data,json=opData,proto3" json:"opData,omitempty"`
	// contains filtered or unexported fields
}

SubmitWorldOpRequest is the request to submit a world operation.

func (*SubmitWorldOpRequest) CloneMessageVT 

func (m *SubmitWorldOpRequest) CloneMessageVT() protobuf_go_lite.CloneMessage

func (*SubmitWorldOpRequest) CloneVT 

func (m *SubmitWorldOpRequest) CloneVT() *SubmitWorldOpRequest

func (*SubmitWorldOpRequest) EqualMessageVT 

func (this *SubmitWorldOpRequest) EqualMessageVT(thatMsg any) bool

func (*SubmitWorldOpRequest) EqualVT 

func (this *SubmitWorldOpRequest) EqualVT(that *SubmitWorldOpRequest) bool

func (*SubmitWorldOpRequest) GetOpData 

func (x *SubmitWorldOpRequest) GetOpData() []byte

func (*SubmitWorldOpRequest) MarshalJSON 

func (x *SubmitWorldOpRequest) MarshalJSON() ([]byte, error)

MarshalJSON marshals the SubmitWorldOpRequest to JSON.

func (*SubmitWorldOpRequest) MarshalProtoJSON 

func (x *SubmitWorldOpRequest) MarshalProtoJSON(s *json.MarshalState)

MarshalProtoJSON marshals the SubmitWorldOpRequest message to JSON.

func (*SubmitWorldOpRequest) MarshalProtoText 

func (x *SubmitWorldOpRequest) MarshalProtoText() string

func (*SubmitWorldOpRequest) MarshalToSizedBufferVT 

func (m *SubmitWorldOpRequest) MarshalToSizedBufferVT(dAtA []byte) (int, error)

func (*SubmitWorldOpRequest) MarshalToVT 

func (m *SubmitWorldOpRequest) MarshalToVT(dAtA []byte) (int, error)

func (*SubmitWorldOpRequest) MarshalVT 

func (m *SubmitWorldOpRequest) MarshalVT() (dAtA []byte, err error)

func (*SubmitWorldOpRequest) ProtoMessage 

func (*SubmitWorldOpRequest) ProtoMessage()

func (*SubmitWorldOpRequest) Reset 

func (x *SubmitWorldOpRequest) Reset()

func (*SubmitWorldOpRequest) SizeVT 

func (m *SubmitWorldOpRequest) SizeVT() (n int)

func (*SubmitWorldOpRequest) String 

func (x *SubmitWorldOpRequest) String() string

func (*SubmitWorldOpRequest) UnmarshalJSON 

func (x *SubmitWorldOpRequest) UnmarshalJSON(b []byte) error

UnmarshalJSON unmarshals the SubmitWorldOpRequest from JSON.

func (*SubmitWorldOpRequest) UnmarshalProtoJSON 

func (x *SubmitWorldOpRequest) UnmarshalProtoJSON(s *json.UnmarshalState)

UnmarshalProtoJSON unmarshals the SubmitWorldOpRequest message from JSON.

func (*SubmitWorldOpRequest) UnmarshalVT 

func (m *SubmitWorldOpRequest) UnmarshalVT(dAtA []byte) error

type SubmitWorldOpResponse 

type SubmitWorldOpResponse struct {

	// Seqno is the new world sequence number after the operation.
	Seqno uint64 `protobuf:"varint,1,opt,name=seqno,proto3" json:"seqno,omitempty"`
	// Error is set if the operation failed.
	Error string `protobuf:"bytes,2,opt,name=error,proto3" json:"error,omitempty"`
	// contains filtered or unexported fields
}

SubmitWorldOpResponse is the response after a world operation is committed.

func (*SubmitWorldOpResponse) CloneMessageVT 

func (m *SubmitWorldOpResponse) CloneMessageVT() protobuf_go_lite.CloneMessage

func (*SubmitWorldOpResponse) CloneVT 

func (m *SubmitWorldOpResponse) CloneVT() *SubmitWorldOpResponse

func (*SubmitWorldOpResponse) EqualMessageVT 

func (this *SubmitWorldOpResponse) EqualMessageVT(thatMsg any) bool

func (*SubmitWorldOpResponse) EqualVT 

func (this *SubmitWorldOpResponse) EqualVT(that *SubmitWorldOpResponse) bool

func (*SubmitWorldOpResponse) GetError 

func (x *SubmitWorldOpResponse) GetError() string

func (*SubmitWorldOpResponse) GetSeqno 

func (x *SubmitWorldOpResponse) GetSeqno() uint64

func (*SubmitWorldOpResponse) MarshalJSON 

func (x *SubmitWorldOpResponse) MarshalJSON() ([]byte, error)

MarshalJSON marshals the SubmitWorldOpResponse to JSON.

func (*SubmitWorldOpResponse) MarshalProtoJSON 

func (x *SubmitWorldOpResponse) MarshalProtoJSON(s *json.MarshalState)

MarshalProtoJSON marshals the SubmitWorldOpResponse message to JSON.

func (*SubmitWorldOpResponse) MarshalProtoText 

func (x *SubmitWorldOpResponse) MarshalProtoText() string

func (*SubmitWorldOpResponse) MarshalToSizedBufferVT 

func (m *SubmitWorldOpResponse) MarshalToSizedBufferVT(dAtA []byte) (int, error)

func (*SubmitWorldOpResponse) MarshalToVT 

func (m *SubmitWorldOpResponse) MarshalToVT(dAtA []byte) (int, error)

func (*SubmitWorldOpResponse) MarshalVT 

func (m *SubmitWorldOpResponse) MarshalVT() (dAtA []byte, err error)

func (*SubmitWorldOpResponse) ProtoMessage 

func (*SubmitWorldOpResponse) ProtoMessage()

func (*SubmitWorldOpResponse) Reset 

func (x *SubmitWorldOpResponse) Reset()

func (*SubmitWorldOpResponse) SizeVT 

func (m *SubmitWorldOpResponse) SizeVT() (n int)

func (*SubmitWorldOpResponse) String 

func (x *SubmitWorldOpResponse) String() string

func (*SubmitWorldOpResponse) UnmarshalJSON 

func (x *SubmitWorldOpResponse) UnmarshalJSON(b []byte) error

UnmarshalJSON unmarshals the SubmitWorldOpResponse from JSON.

func (*SubmitWorldOpResponse) UnmarshalProtoJSON 

func (x *SubmitWorldOpResponse) UnmarshalProtoJSON(s *json.UnmarshalState)

UnmarshalProtoJSON unmarshals the SubmitWorldOpResponse message from JSON.

func (*SubmitWorldOpResponse) UnmarshalVT 

func (m *SubmitWorldOpResponse) UnmarshalVT(dAtA []byte) error

type WatchWorldSeqnoRequest 

type WatchWorldSeqnoRequest struct {

	// LastSeenSeqno is the last seqno the follower has seen.
	LastSeenSeqno uint64 `protobuf:"varint,1,opt,name=last_seen_seqno,json=lastSeenSeqno,proto3" json:"lastSeenSeqno,omitempty"`
	// contains filtered or unexported fields
}

WatchWorldSeqnoRequest is the request to watch world seqno changes.

func (*WatchWorldSeqnoRequest) CloneMessageVT 

func (m *WatchWorldSeqnoRequest) CloneMessageVT() protobuf_go_lite.CloneMessage

func (*WatchWorldSeqnoRequest) CloneVT 

func (m *WatchWorldSeqnoRequest) CloneVT() *WatchWorldSeqnoRequest

func (*WatchWorldSeqnoRequest) EqualMessageVT 

func (this *WatchWorldSeqnoRequest) EqualMessageVT(thatMsg any) bool

func (*WatchWorldSeqnoRequest) EqualVT 

func (this *WatchWorldSeqnoRequest) EqualVT(that *WatchWorldSeqnoRequest) bool

func (*WatchWorldSeqnoRequest) GetLastSeenSeqno 

func (x *WatchWorldSeqnoRequest) GetLastSeenSeqno() uint64

func (*WatchWorldSeqnoRequest) MarshalJSON 

func (x *WatchWorldSeqnoRequest) MarshalJSON() ([]byte, error)

MarshalJSON marshals the WatchWorldSeqnoRequest to JSON.

func (*WatchWorldSeqnoRequest) MarshalProtoJSON 

func (x *WatchWorldSeqnoRequest) MarshalProtoJSON(s *json.MarshalState)

MarshalProtoJSON marshals the WatchWorldSeqnoRequest message to JSON.

func (*WatchWorldSeqnoRequest) MarshalProtoText 

func (x *WatchWorldSeqnoRequest) MarshalProtoText() string

func (*WatchWorldSeqnoRequest) MarshalToSizedBufferVT 

func (m *WatchWorldSeqnoRequest) MarshalToSizedBufferVT(dAtA []byte) (int, error)

func (*WatchWorldSeqnoRequest) MarshalToVT 

func (m *WatchWorldSeqnoRequest) MarshalToVT(dAtA []byte) (int, error)

func (*WatchWorldSeqnoRequest) MarshalVT 

func (m *WatchWorldSeqnoRequest) MarshalVT() (dAtA []byte, err error)

func (*WatchWorldSeqnoRequest) ProtoMessage 

func (*WatchWorldSeqnoRequest) ProtoMessage()

func (*WatchWorldSeqnoRequest) Reset 

func (x *WatchWorldSeqnoRequest) Reset()

func (*WatchWorldSeqnoRequest) SizeVT 

func (m *WatchWorldSeqnoRequest) SizeVT() (n int)

func (*WatchWorldSeqnoRequest) String 

func (x *WatchWorldSeqnoRequest) String() string

func (*WatchWorldSeqnoRequest) UnmarshalJSON 

func (x *WatchWorldSeqnoRequest) UnmarshalJSON(b []byte) error

UnmarshalJSON unmarshals the WatchWorldSeqnoRequest from JSON.

func (*WatchWorldSeqnoRequest) UnmarshalProtoJSON 

func (x *WatchWorldSeqnoRequest) UnmarshalProtoJSON(s *json.UnmarshalState)

UnmarshalProtoJSON unmarshals the WatchWorldSeqnoRequest message from JSON.

func (*WatchWorldSeqnoRequest) UnmarshalVT 

func (m *WatchWorldSeqnoRequest) UnmarshalVT(dAtA []byte) error

type WatchWorldSeqnoResponse 

type WatchWorldSeqnoResponse struct {

	// Seqno is the current world sequence number.
	Seqno uint64 `protobuf:"varint,1,opt,name=seqno,proto3" json:"seqno,omitempty"`
	// contains filtered or unexported fields
}

WatchWorldSeqnoResponse is a seqno update pushed to followers.

func (*WatchWorldSeqnoResponse) CloneMessageVT 

func (m *WatchWorldSeqnoResponse) CloneMessageVT() protobuf_go_lite.CloneMessage

func (*WatchWorldSeqnoResponse) CloneVT 

func (m *WatchWorldSeqnoResponse) CloneVT() *WatchWorldSeqnoResponse

func (*WatchWorldSeqnoResponse) EqualMessageVT 

func (this *WatchWorldSeqnoResponse) EqualMessageVT(thatMsg any) bool

func (*WatchWorldSeqnoResponse) EqualVT 

func (this *WatchWorldSeqnoResponse) EqualVT(that *WatchWorldSeqnoResponse) bool

func (*WatchWorldSeqnoResponse) GetSeqno 

func (x *WatchWorldSeqnoResponse) GetSeqno() uint64

func (*WatchWorldSeqnoResponse) MarshalJSON 

func (x *WatchWorldSeqnoResponse) MarshalJSON() ([]byte, error)

MarshalJSON marshals the WatchWorldSeqnoResponse to JSON.

func (*WatchWorldSeqnoResponse) MarshalProtoJSON 

func (x *WatchWorldSeqnoResponse) MarshalProtoJSON(s *json.MarshalState)

MarshalProtoJSON marshals the WatchWorldSeqnoResponse message to JSON.

func (*WatchWorldSeqnoResponse) MarshalProtoText 

func (x *WatchWorldSeqnoResponse) MarshalProtoText() string

func (*WatchWorldSeqnoResponse) MarshalToSizedBufferVT 

func (m *WatchWorldSeqnoResponse) MarshalToSizedBufferVT(dAtA []byte) (int, error)

func (*WatchWorldSeqnoResponse) MarshalToVT 

func (m *WatchWorldSeqnoResponse) MarshalToVT(dAtA []byte) (int, error)

func (*WatchWorldSeqnoResponse) MarshalVT 

func (m *WatchWorldSeqnoResponse) MarshalVT() (dAtA []byte, err error)

func (*WatchWorldSeqnoResponse) ProtoMessage 

func (*WatchWorldSeqnoResponse) ProtoMessage()

func (*WatchWorldSeqnoResponse) Reset 

func (x *WatchWorldSeqnoResponse) Reset()

func (*WatchWorldSeqnoResponse) SizeVT 

func (m *WatchWorldSeqnoResponse) SizeVT() (n int)

func (*WatchWorldSeqnoResponse) String 

func (x *WatchWorldSeqnoResponse) String() string

func (*WatchWorldSeqnoResponse) UnmarshalJSON 

func (x *WatchWorldSeqnoResponse) UnmarshalJSON(b []byte) error

UnmarshalJSON unmarshals the WatchWorldSeqnoResponse from JSON.

func (*WatchWorldSeqnoResponse) UnmarshalProtoJSON 

func (x *WatchWorldSeqnoResponse) UnmarshalProtoJSON(s *json.UnmarshalState)

UnmarshalProtoJSON unmarshals the WatchWorldSeqnoResponse message from JSON.

func (*WatchWorldSeqnoResponse) UnmarshalVT 

func (m *WatchWorldSeqnoResponse) UnmarshalVT(dAtA []byte) error

type WorldRoleHandler 

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

WorldRoleHandler implements RoleChangeHandler to manage the world engine lifecycle based on the coordinator's leader/follower role.

func NewWorldRoleHandler 

func NewWorldRoleHandler(le *logrus.Entry, factory EngineFactory) *WorldRoleHandler

NewWorldRoleHandler creates a new WorldRoleHandler.

func (*WorldRoleHandler) GetEngine 

func (h *WorldRoleHandler) GetEngine() world.Engine

GetEngine returns the current world engine, or nil if not leader.

func (*WorldRoleHandler) OnBecomeFollower 

func (h *WorldRoleHandler) OnBecomeFollower(ctx context.Context, leaderSocketPath string) error

OnBecomeFollower blocks until the follower context is cancelled.

func (*WorldRoleHandler) OnBecomeLeader 

func (h *WorldRoleHandler) OnBecomeLeader(ctx context.Context) error

OnBecomeLeader creates the world engine and blocks until leadership is lost.

func (*WorldRoleHandler) WaitEngine 

func (h *WorldRoleHandler) WaitEngine(ctx context.Context) (world.Engine, error)

WaitEngine waits for the world engine to become available.

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