forked from hashicorp/nomad
/
agent_endpoint.go
169 lines (146 loc) · 3.95 KB
/
agent_endpoint.go
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package agent
import (
"net"
"net/http"
"github.com/hashicorp/serf/serf"
)
type Member struct {
Name string
Addr net.IP
Port uint16
Tags map[string]string
Status string
ProtocolMin uint8
ProtocolMax uint8
ProtocolCur uint8
DelegateMin uint8
DelegateMax uint8
DelegateCur uint8
}
func nomadMember(m serf.Member) Member {
return Member{
Name: m.Name,
Addr: m.Addr,
Port: m.Port,
Tags: m.Tags,
Status: m.Status.String(),
ProtocolMin: m.ProtocolMin,
ProtocolMax: m.ProtocolMax,
ProtocolCur: m.ProtocolCur,
DelegateMin: m.DelegateMin,
DelegateMax: m.DelegateMax,
DelegateCur: m.DelegateCur,
}
}
func (s *HTTPServer) AgentSelfRequest(resp http.ResponseWriter, req *http.Request) (interface{}, error) {
if req.Method != "GET" {
return nil, CodedError(405, ErrInvalidMethod)
}
// Get the member as a server
var member serf.Member
srv := s.agent.Server()
if srv != nil {
member = srv.LocalMember()
}
self := agentSelf{
Config: s.agent.config,
Member: nomadMember(member),
Stats: s.agent.Stats(),
}
return self, nil
}
func (s *HTTPServer) AgentJoinRequest(resp http.ResponseWriter, req *http.Request) (interface{}, error) {
if req.Method != "PUT" && req.Method != "POST" {
return nil, CodedError(405, ErrInvalidMethod)
}
srv := s.agent.Server()
if srv == nil {
return nil, CodedError(501, ErrInvalidMethod)
}
// Get the join addresses
query := req.URL.Query()
addrs := query["address"]
if len(addrs) == 0 {
return nil, CodedError(400, "missing address to join")
}
// Attempt the join
num, err := srv.Join(addrs)
var errStr string
if err != nil {
errStr = err.Error()
}
return joinResult{num, errStr}, nil
}
func (s *HTTPServer) AgentMembersRequest(resp http.ResponseWriter, req *http.Request) (interface{}, error) {
if req.Method != "GET" {
return nil, CodedError(405, ErrInvalidMethod)
}
srv := s.agent.Server()
if srv == nil {
return nil, CodedError(501, ErrInvalidMethod)
}
serfMembers := srv.Members()
members := make([]Member, len(serfMembers))
for i, mem := range serfMembers {
members[i] = nomadMember(mem)
}
return members, nil
}
func (s *HTTPServer) AgentForceLeaveRequest(resp http.ResponseWriter, req *http.Request) (interface{}, error) {
if req.Method != "PUT" && req.Method != "POST" {
return nil, CodedError(405, ErrInvalidMethod)
}
srv := s.agent.Server()
if srv == nil {
return nil, CodedError(501, ErrInvalidMethod)
}
// Get the node to eject
node := req.URL.Query().Get("node")
if node == "" {
return nil, CodedError(400, "missing node to force leave")
}
// Attempt remove
err := srv.RemoveFailedNode(node)
return nil, err
}
func (s *HTTPServer) AgentServersRequest(resp http.ResponseWriter, req *http.Request) (interface{}, error) {
switch req.Method {
case "PUT", "POST":
return s.updateServers(resp, req)
case "GET":
return s.listServers(resp, req)
default:
return nil, CodedError(405, ErrInvalidMethod)
}
}
func (s *HTTPServer) listServers(resp http.ResponseWriter, req *http.Request) (interface{}, error) {
client := s.agent.Client()
if client == nil {
return nil, CodedError(501, ErrInvalidMethod)
}
// Get the current list of servers
return client.Servers(), nil
}
func (s *HTTPServer) updateServers(resp http.ResponseWriter, req *http.Request) (interface{}, error) {
client := s.agent.Client()
if client == nil {
return nil, CodedError(501, ErrInvalidMethod)
}
// Get the servers from the request
servers := req.URL.Query()["address"]
if len(servers) == 0 {
return nil, CodedError(400, "missing server address")
}
// Set the servers list into the client
client.SetServers(servers)
return nil, nil
}
type agentSelf struct {
Config *Config `json:"config"`
Member Member `json:"member,omitempty"`
Stats map[string]map[string]string `json:"stats"`
}
type joinResult struct {
NumJoined int `json:"num_joined"`
Error string `json:"error"`
}