67 lines
1.8 KiB
Go
67 lines
1.8 KiB
Go
package consul
|
|
|
|
import (
|
|
"fmt"
|
|
"sync"
|
|
|
|
"github.com/hashicorp/consul/agent/metadata"
|
|
"github.com/hashicorp/raft"
|
|
)
|
|
|
|
// ServerLookup encapsulates looking up servers by id and address
|
|
type ServerLookup struct {
|
|
lock sync.RWMutex
|
|
addressToServer map[raft.ServerAddress]*metadata.Server
|
|
idToServer map[raft.ServerID]*metadata.Server
|
|
}
|
|
|
|
func NewServerLookup() *ServerLookup {
|
|
return &ServerLookup{
|
|
addressToServer: make(map[raft.ServerAddress]*metadata.Server),
|
|
idToServer: make(map[raft.ServerID]*metadata.Server),
|
|
}
|
|
}
|
|
|
|
func (sl *ServerLookup) AddServer(server *metadata.Server) {
|
|
sl.lock.Lock()
|
|
defer sl.lock.Unlock()
|
|
sl.addressToServer[raft.ServerAddress(server.Addr.String())] = server
|
|
sl.idToServer[raft.ServerID(server.ID)] = server
|
|
}
|
|
|
|
func (sl *ServerLookup) RemoveServer(server *metadata.Server) {
|
|
sl.lock.Lock()
|
|
defer sl.lock.Unlock()
|
|
delete(sl.addressToServer, raft.ServerAddress(server.Addr.String()))
|
|
delete(sl.idToServer, raft.ServerID(server.ID))
|
|
}
|
|
|
|
// Implements the ServerAddressProvider interface
|
|
func (sl *ServerLookup) ServerAddr(id raft.ServerID) (raft.ServerAddress, error) {
|
|
sl.lock.RLock()
|
|
defer sl.lock.RUnlock()
|
|
svr, ok := sl.idToServer[id]
|
|
if !ok {
|
|
return "", fmt.Errorf("Could not find address for server id %v", id)
|
|
}
|
|
return raft.ServerAddress(svr.Addr.String()), nil
|
|
}
|
|
|
|
// Server looks up the server by address, returns a boolean if not found
|
|
func (sl *ServerLookup) Server(addr raft.ServerAddress) *metadata.Server {
|
|
sl.lock.RLock()
|
|
defer sl.lock.RUnlock()
|
|
svr, _ := sl.addressToServer[addr]
|
|
return svr
|
|
}
|
|
|
|
func (sl *ServerLookup) Servers() []*metadata.Server {
|
|
sl.lock.RLock()
|
|
defer sl.lock.RUnlock()
|
|
var ret []*metadata.Server
|
|
for _, svr := range sl.addressToServer {
|
|
ret = append(ret, svr)
|
|
}
|
|
return ret
|
|
}
|