open-consul/consul/fsm.go

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2013-12-06 23:43:07 +00:00
package consul
import (
"github.com/hashicorp/raft"
"io"
)
// consulFSM implements a finite state machine that is used
// along with Raft to provide strong consistency for various
// data that requires it. We implement this outside the Server
// to avoid exposing this outside the package.
type consulFSM struct {
server *Server
}
// consulSnapshot is used to provide a snapshot of the current
// state in a way that can be accessed concurrently with operations
// that may modify the live state.
type consulSnapshot struct {
fsm *consulFSM
}
func (c *consulFSM) Apply([]byte) interface{} {
return nil
}
func (c *consulFSM) Snapshot() (raft.FSMSnapshot, error) {
snap := &consulSnapshot{fsm: c}
return snap, nil
}
func (c *consulFSM) Restore(io.ReadCloser) error {
return nil
}
func (s *consulSnapshot) Persist(sink raft.SnapshotSink) error {
return nil
}
func (s *consulSnapshot) Release() {
}