| // Copyright 2016 The etcd Authors |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package naming |
| |
| import ( |
| "context" |
| "encoding/json" |
| "reflect" |
| "testing" |
| |
| etcd "github.com/coreos/etcd/clientv3" |
| "github.com/coreos/etcd/integration" |
| "github.com/coreos/etcd/pkg/testutil" |
| |
| "google.golang.org/grpc/naming" |
| ) |
| |
| func TestGRPCResolver(t *testing.T) { |
| defer testutil.AfterTest(t) |
| |
| clus := integration.NewClusterV3(t, &integration.ClusterConfig{Size: 1}) |
| defer clus.Terminate(t) |
| |
| r := GRPCResolver{ |
| Client: clus.RandClient(), |
| } |
| |
| w, err := r.Resolve("foo") |
| if err != nil { |
| t.Fatal("failed to resolve foo", err) |
| } |
| defer w.Close() |
| |
| addOp := naming.Update{Op: naming.Add, Addr: "127.0.0.1", Metadata: "metadata"} |
| err = r.Update(context.TODO(), "foo", addOp) |
| if err != nil { |
| t.Fatal("failed to add foo", err) |
| } |
| |
| us, err := w.Next() |
| if err != nil { |
| t.Fatal("failed to get udpate", err) |
| } |
| |
| wu := &naming.Update{ |
| Op: naming.Add, |
| Addr: "127.0.0.1", |
| Metadata: "metadata", |
| } |
| |
| if !reflect.DeepEqual(us[0], wu) { |
| t.Fatalf("up = %#v, want %#v", us[0], wu) |
| } |
| |
| delOp := naming.Update{Op: naming.Delete, Addr: "127.0.0.1"} |
| err = r.Update(context.TODO(), "foo", delOp) |
| if err != nil { |
| t.Fatalf("failed to udpate %v", err) |
| } |
| |
| us, err = w.Next() |
| if err != nil { |
| t.Fatalf("failed to get udpate %v", err) |
| } |
| |
| wu = &naming.Update{ |
| Op: naming.Delete, |
| Addr: "127.0.0.1", |
| Metadata: "metadata", |
| } |
| |
| if !reflect.DeepEqual(us[0], wu) { |
| t.Fatalf("up = %#v, want %#v", us[0], wu) |
| } |
| } |
| |
| // TestGRPCResolverMulti ensures the resolver will initialize |
| // correctly with multiple hosts and correctly receive multiple |
| // updates in a single revision. |
| func TestGRPCResolverMulti(t *testing.T) { |
| defer testutil.AfterTest(t) |
| |
| clus := integration.NewClusterV3(t, &integration.ClusterConfig{Size: 1}) |
| defer clus.Terminate(t) |
| c := clus.RandClient() |
| |
| v, verr := json.Marshal(naming.Update{Addr: "127.0.0.1", Metadata: "md"}) |
| if verr != nil { |
| t.Fatal(verr) |
| } |
| if _, err := c.Put(context.TODO(), "foo/host", string(v)); err != nil { |
| t.Fatal(err) |
| } |
| if _, err := c.Put(context.TODO(), "foo/host2", string(v)); err != nil { |
| t.Fatal(err) |
| } |
| |
| r := GRPCResolver{c} |
| |
| w, err := r.Resolve("foo") |
| if err != nil { |
| t.Fatal("failed to resolve foo", err) |
| } |
| defer w.Close() |
| |
| updates, nerr := w.Next() |
| if nerr != nil { |
| t.Fatal(nerr) |
| } |
| if len(updates) != 2 { |
| t.Fatalf("expected two updates, got %+v", updates) |
| } |
| |
| _, err = c.Txn(context.TODO()).Then(etcd.OpDelete("foo/host"), etcd.OpDelete("foo/host2")).Commit() |
| if err != nil { |
| t.Fatal(err) |
| } |
| |
| updates, nerr = w.Next() |
| if nerr != nil { |
| t.Fatal(nerr) |
| } |
| if len(updates) != 2 || (updates[0].Op != naming.Delete && updates[1].Op != naming.Delete) { |
| t.Fatalf("expected two updates, got %+v", updates) |
| } |
| } |