// AddService is used to add a service entry to the local state.
// This entry is persistent and the agent will make a best effort to
// ensure it is registered
func (l *localState) AddService(service *structs.NodeService) {
// Assign the ID if none given
if service.ID == "" && service.Service != "" {
service.ID = service.Service
}
l.Lock()
defer l.Unlock()
l.services[service.ID] = service
l.serviceStatus[service.ID] = syncStatus{}
l.changeMade()
}
// AddService is used to add a service entry.
// This entry is persistent and the agent will make a best effort to
// ensure it is registered
func (a *Agent) AddService(service *structs.NodeService, chkType *CheckType, persist bool) error {
if service.Service == "" {
return fmt.Errorf("Service name missing")
}
if service.ID == "" && service.Service != "" {
service.ID = service.Service
}
if chkType != nil && !chkType.Valid() {
return fmt.Errorf("Check type is not valid")
}
// Add the service
a.state.AddService(service)
// Persist the service to a file
if persist {
if err := a.persistService(service); err != nil {
return err
}
}
// Create an associated health check
if chkType != nil {
check := &structs.HealthCheck{
Node: a.config.NodeName,
CheckID: fmt.Sprintf("service:%s", service.ID),
Name: fmt.Sprintf("Service '%s' check", service.Service),
Status: structs.HealthCritical,
Notes: chkType.Notes,
ServiceID: service.ID,
ServiceName: service.Service,
}
if err := a.AddCheck(check, chkType, persist); err != nil {
return err
}
}
return nil
}
func TestAgentAntiEntropy_Services(t *testing.T) {
conf := nextConfig()
dir, agent := makeAgent(t, conf)
defer os.RemoveAll(dir)
defer agent.Shutdown()
testutil.WaitForLeader(t, agent.RPC, "dc1")
// Register info
args := &structs.RegisterRequest{
Datacenter: "dc1",
Node: agent.config.NodeName,
Address: "127.0.0.1",
}
// Exists both, same (noop)
var out struct{}
srv1 := &structs.NodeService{
ID: "mysql",
Service: "mysql",
Tags: []string{"master"},
Port: 5000,
}
agent.state.AddService(srv1)
args.Service = srv1
if err := agent.RPC("Catalog.Register", args, &out); err != nil {
t.Fatalf("err: %v", err)
}
// Exists both, different (update)
srv2 := &structs.NodeService{
ID: "redis",
Service: "redis",
Tags: []string{},
Port: 8000,
}
agent.state.AddService(srv2)
srv2_mod := new(structs.NodeService)
*srv2_mod = *srv2
srv2_mod.Port = 9000
args.Service = srv2_mod
if err := agent.RPC("Catalog.Register", args, &out); err != nil {
t.Fatalf("err: %v", err)
}
// Exists local (create)
srv3 := &structs.NodeService{
ID: "web",
Service: "web",
Tags: []string{},
Port: 80,
}
agent.state.AddService(srv3)
// Exists remote (delete)
srv4 := &structs.NodeService{
ID: "lb",
Service: "lb",
Tags: []string{},
Port: 443,
}
args.Service = srv4
if err := agent.RPC("Catalog.Register", args, &out); err != nil {
t.Fatalf("err: %v", err)
}
// Exists both, different address (update)
srv5 := &structs.NodeService{
ID: "api",
Service: "api",
Tags: []string{},
Address: "127.0.0.10",
Port: 8000,
}
agent.state.AddService(srv5)
srv5_mod := new(structs.NodeService)
*srv5_mod = *srv5
srv5_mod.Address = "127.0.0.1"
args.Service = srv5_mod
if err := agent.RPC("Catalog.Register", args, &out); err != nil {
t.Fatalf("err: %v", err)
}
// Trigger anti-entropy run and wait
agent.StartSync()
time.Sleep(200 * time.Millisecond)
// Verify that we are in sync
req := structs.NodeSpecificRequest{
Datacenter: "dc1",
Node: agent.config.NodeName,
}
var services structs.IndexedNodeServices
if err := agent.RPC("Catalog.NodeServices", &req, &services); err != nil {
t.Fatalf("err: %v", err)
}
// We should have 5 services (consul included)
if len(services.NodeServices.Services) != 5 {
t.Fatalf("bad: %v", services.NodeServices.Services)
}
// All the services should match
for id, serv := range services.NodeServices.Services {
switch id {
case "mysql":
if !reflect.DeepEqual(serv, srv1) {
t.Fatalf("bad: %v %v", serv, srv1)
}
case "redis":
if !reflect.DeepEqual(serv, srv2) {
t.Fatalf("bad: %#v %#v", serv, srv2)
}
case "web":
if !reflect.DeepEqual(serv, srv3) {
t.Fatalf("bad: %v %v", serv, srv3)
}
case "api":
if !reflect.DeepEqual(serv, srv5) {
t.Fatalf("bad: %v %v", serv, srv5)
}
case "consul":
// ignore
default:
t.Fatalf("unexpected service: %v", id)
}
}
// Check the local state
if len(agent.state.services) != 5 {
t.Fatalf("bad: %v", agent.state.services)
}
if len(agent.state.serviceStatus) != 5 {
t.Fatalf("bad: %v", agent.state.serviceStatus)
}
for name, status := range agent.state.serviceStatus {
if !status.inSync {
t.Fatalf("should be in sync: %v %v", name, status)
}
}
}