micro/register/memory_test.go

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package register
import (
"context"
"fmt"
"os"
"sync"
"testing"
"time"
)
var testData = map[string][]*Service{
"foo": {
{
Name: "foo",
Version: "1.0.0",
Nodes: []*Node{
{
ID: "foo-1.0.0-123",
Address: "localhost:9999",
},
{
ID: "foo-1.0.0-321",
Address: "localhost:9999",
},
},
},
{
Name: "foo",
Version: "1.0.1",
Nodes: []*Node{
{
ID: "foo-1.0.1-321",
Address: "localhost:6666",
},
},
},
{
Name: "foo",
Version: "1.0.3",
Nodes: []*Node{
{
ID: "foo-1.0.3-345",
Address: "localhost:8888",
},
},
},
},
"bar": {
{
Name: "bar",
Version: "default",
Nodes: []*Node{
{
ID: "bar-1.0.0-123",
Address: "localhost:9999",
},
{
ID: "bar-1.0.0-321",
Address: "localhost:9999",
},
},
},
{
Name: "bar",
Version: "latest",
Nodes: []*Node{
{
ID: "bar-1.0.1-321",
Address: "localhost:6666",
},
},
},
},
}
//nolint:gocyclo
func TestMemoryRegistry(t *testing.T) {
ctx := context.TODO()
m := NewRegister()
fn := func(k string, v []*Service) {
services, err := m.LookupService(ctx, k)
if err != nil {
t.Errorf("Unexpected error getting service %s: %v", k, err)
}
if len(services) != len(v) {
t.Errorf("Expected %d services for %s, got %d", len(v), k, len(services))
}
for _, service := range v {
var seen bool
for _, s := range services {
if s.Version == service.Version {
seen = true
break
}
}
if !seen {
t.Errorf("expected to find version %s", service.Version)
}
}
}
// register data
for _, v := range testData {
serviceCount := 0
for _, service := range v {
if err := m.Register(ctx, service); err != nil {
t.Errorf("Unexpected register error: %v", err)
}
serviceCount++
// after the service has been registered we should be able to query it
services, err := m.LookupService(ctx, service.Name)
if err != nil {
t.Errorf("Unexpected error getting service %s: %v", service.Name, err)
}
if len(services) != serviceCount {
t.Errorf("Expected %d services for %s, got %d", serviceCount, service.Name, len(services))
}
}
}
// using test data
for k, v := range testData {
fn(k, v)
}
services, err := m.ListServices(ctx)
if err != nil {
t.Errorf("Unexpected error when listing services: %v", err)
}
totalServiceCount := 0
for _, testSvc := range testData {
for range testSvc {
totalServiceCount++
}
}
if len(services) != totalServiceCount {
t.Errorf("Expected total service count: %d, got: %d", totalServiceCount, len(services))
}
// deregister
for _, v := range testData {
for _, service := range v {
if err := m.Deregister(ctx, service); err != nil {
t.Errorf("Unexpected deregister error: %v", err)
}
}
}
// after all the service nodes have been deregistered we should not get any results
for _, v := range testData {
for _, service := range v {
services, err := m.LookupService(ctx, service.Name)
if err != ErrNotFound {
t.Errorf("Expected error: %v, got: %v", ErrNotFound, err)
}
if len(services) != 0 {
t.Errorf("Expected %d services for %s, got %d", 0, service.Name, len(services))
}
}
}
}
func TestMemoryRegistryTTL(t *testing.T) {
m := NewRegister()
ctx := context.TODO()
for _, v := range testData {
for _, service := range v {
if err := m.Register(ctx, service, RegisterTTL(time.Millisecond)); err != nil {
t.Fatal(err)
}
}
}
time.Sleep(ttlPruneTime * 2)
for name := range testData {
svcs, err := m.LookupService(ctx, name)
if err != nil {
t.Fatal(err)
}
for _, svc := range svcs {
if len(svc.Nodes) > 0 {
t.Fatalf("Service %q still has nodes registered", name)
}
}
}
}
func TestMemoryRegistryTTLConcurrent(t *testing.T) {
concurrency := 1000
waitTime := ttlPruneTime * 2
m := NewRegister()
ctx := context.TODO()
for _, v := range testData {
for _, service := range v {
if err := m.Register(ctx, service, RegisterTTL(waitTime/2)); err != nil {
t.Fatal(err)
}
}
}
if len(os.Getenv("IN_TRAVIS_CI")) == 0 {
t.Logf("test will wait %v, then check TTL timeouts", waitTime)
}
errChan := make(chan error, concurrency)
syncChan := make(chan struct{})
for i := 0; i < concurrency; i++ {
go func() {
<-syncChan
for name := range testData {
svcs, err := m.LookupService(ctx, name)
if err != nil {
errChan <- err
return
}
for _, svc := range svcs {
if len(svc.Nodes) > 0 {
errChan <- fmt.Errorf("Service %q still has nodes registered", name)
return
}
}
}
errChan <- nil
}()
}
time.Sleep(waitTime)
close(syncChan)
for i := 0; i < concurrency; i++ {
if err := <-errChan; err != nil {
t.Fatal(err)
}
}
}
func TestMemoryWildcard(t *testing.T) {
m := NewRegister()
ctx := context.TODO()
testSrv := &Service{Name: "foo", Version: "1.0.0"}
if err := m.Register(ctx, testSrv, RegisterDomain("one")); err != nil {
t.Fatalf("Register err: %v", err)
}
if err := m.Register(ctx, testSrv, RegisterDomain("two")); err != nil {
t.Fatalf("Register err: %v", err)
}
if recs, err := m.ListServices(ctx, ListDomain("one")); err != nil {
t.Errorf("List err: %v", err)
} else if len(recs) != 1 {
t.Errorf("Expected 1 record, got %v", len(recs))
}
if recs, err := m.ListServices(ctx, ListDomain("*")); err != nil {
t.Errorf("List err: %v", err)
} else if len(recs) != 2 {
t.Errorf("Expected 2 records, got %v", len(recs))
}
if recs, err := m.LookupService(ctx, testSrv.Name, LookupDomain("one")); err != nil {
t.Errorf("Lookup err: %v", err)
} else if len(recs) != 1 {
t.Errorf("Expected 1 record, got %v", len(recs))
}
if recs, err := m.LookupService(ctx, testSrv.Name, LookupDomain("*")); err != nil {
t.Errorf("Lookup err: %v", err)
} else if len(recs) != 2 {
t.Errorf("Expected 2 records, got %v", len(recs))
}
}
func TestWatcher(t *testing.T) {
testSrv := &Service{Name: "foo", Version: "1.0.0"}
ctx := context.TODO()
m := NewRegister()
m.Init()
m.Connect(ctx)
wc, err := m.Watch(ctx)
if err != nil {
t.Fatalf("cant watch: %v", err)
}
defer wc.Stop()
var wg sync.WaitGroup
wg.Add(1)
go func() {
for {
ch, err := wc.Next()
if err != nil {
t.Fatal("unexpected err", err)
}
t.Logf("changes %#+v", ch.Service)
wc.Stop()
wg.Done()
return
}
}()
if err := m.Register(ctx, testSrv); err != nil {
t.Fatalf("Register err: %v", err)
}
wg.Wait()
if _, err := wc.Next(); err == nil {
t.Fatal("expected error on Next()")
}
}