github.imxd.top/hashicorp/consul@v1.4.5/agent/consul/status_endpoint.go (about)

     1  package consul
     2  
     3  import (
     4  	"fmt"
     5  	"strconv"
     6  
     7  	"github.com/hashicorp/consul/agent/consul/autopilot"
     8  )
     9  
    10  // Status endpoint is used to check on server status
    11  type Status struct {
    12  	server *Server
    13  }
    14  
    15  // Ping is used to just check for connectivity
    16  func (s *Status) Ping(args struct{}, reply *struct{}) error {
    17  	return nil
    18  }
    19  
    20  // Leader is used to get the address of the leader
    21  func (s *Status) Leader(args struct{}, reply *string) error {
    22  	leader := string(s.server.raft.Leader())
    23  	if leader != "" {
    24  		*reply = leader
    25  	} else {
    26  		*reply = ""
    27  	}
    28  	return nil
    29  }
    30  
    31  // Peers is used to get all the Raft peers
    32  func (s *Status) Peers(args struct{}, reply *[]string) error {
    33  	future := s.server.raft.GetConfiguration()
    34  	if err := future.Error(); err != nil {
    35  		return err
    36  	}
    37  
    38  	for _, server := range future.Configuration().Servers {
    39  		*reply = append(*reply, string(server.Address))
    40  	}
    41  	return nil
    42  }
    43  
    44  // Used by Autopilot to query the raft stats of the local server.
    45  func (s *Status) RaftStats(args struct{}, reply *autopilot.ServerStats) error {
    46  	stats := s.server.raft.Stats()
    47  
    48  	var err error
    49  	reply.LastContact = stats["last_contact"]
    50  	reply.LastIndex, err = strconv.ParseUint(stats["last_log_index"], 10, 64)
    51  	if err != nil {
    52  		return fmt.Errorf("error parsing server's last_log_index value: %s", err)
    53  	}
    54  	reply.LastTerm, err = strconv.ParseUint(stats["last_log_term"], 10, 64)
    55  	if err != nil {
    56  		return fmt.Errorf("error parsing server's last_log_term value: %s", err)
    57  	}
    58  
    59  	return nil
    60  }