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https://github.com/etcd-io/etcd.git
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5d7c1db3a9
This is not yet implementation, just API and tests to be filled with implementation in next CLs, tracked by: https://github.com/etcd-io/etcd/issues/12652 We propose here 3 packages: - clientv3/naming/endpoints -> That is abstraction layer over etcd that allows to write, read & watch Endpoints information. It's independent from GRPC API. It hides the storage details. - clientv3/naming/endpoints/internal -> That contains the grpc's compatible Update class to preserve the internal JSON mashalling format. - clientv3/naming/resolver -> That implements the GRPC resolver API, such that etcd can be used for connection.Dial in grpc. Please see the grpc_naming.md document changes & grpcproxy/cluster.go new integration, to see how the new abstractions work.
136 lines
3.4 KiB
Go
136 lines
3.4 KiB
Go
// Copyright 2016 The etcd Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package naming_test
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import (
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"context"
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"reflect"
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"testing"
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etcd "go.etcd.io/etcd/client/v3"
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"go.etcd.io/etcd/client/v3/naming/endpoints"
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"go.etcd.io/etcd/pkg/v3/testutil"
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"go.etcd.io/etcd/tests/v3/integration"
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)
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func TestEndpointManager(t *testing.T) {
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t.Skip("Not implemented yet")
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defer testutil.AfterTest(t)
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clus := integration.NewClusterV3(t, &integration.ClusterConfig{Size: 1})
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defer clus.Terminate(t)
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em, err := endpoints.NewManager(clus.RandClient(), "foo")
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if err != nil {
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t.Fatal("failed to create EndpointManager", err)
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}
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ctx, watchCancel := context.WithCancel(context.Background())
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defer watchCancel()
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w, err := em.NewWatchChannel(ctx)
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if err != nil {
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t.Fatal("failed to establish watch", err)
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}
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e1 := endpoints.Endpoint{Addr: "127.0.0.1", Metadata: "metadata"}
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err = em.AddEndpoint(context.TODO(), "foo/a1", e1)
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if err != nil {
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t.Fatal("failed to add foo", err)
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}
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us := <-w
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if us == nil {
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t.Fatal("failed to get update", err)
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}
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wu := endpoints.Update{
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Op: endpoints.Add,
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Key: "foo/a1",
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Endpoint: e1,
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}
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if !reflect.DeepEqual(us[0], wu) {
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t.Fatalf("up = %#v, want %#v", us[0], wu)
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}
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err = em.DeleteEndpoint(context.TODO(), "foo/a1")
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if err != nil {
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t.Fatalf("failed to udpate %v", err)
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}
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us = <-w
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if err != nil {
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t.Fatalf("failed to get udpate %v", err)
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}
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wu = endpoints.Update{
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Op: endpoints.Delete,
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Key: "foo/a1",
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}
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if !reflect.DeepEqual(us, wu) {
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t.Fatalf("up = %#v, want %#v", us[1], wu)
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}
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}
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// TestEndpointManagerAtomicity ensures the resolver will initialize
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// correctly with multiple hosts and correctly receive multiple
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// updates in a single revision.
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func TestEndpointManagerAtomicity(t *testing.T) {
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t.Skip("Not implemented yet")
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defer testutil.AfterTest(t)
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clus := integration.NewClusterV3(t, &integration.ClusterConfig{Size: 1})
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defer clus.Terminate(t)
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c := clus.RandClient()
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em, err := endpoints.NewManager(c, "foo")
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if err != nil {
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t.Fatal("failed to create EndpointManager", err)
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}
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err = em.Update(context.TODO(), []*endpoints.UpdateWithOpts{
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endpoints.NewAddUpdateOpts("foo/host", endpoints.Endpoint{Addr: "127.0.0.1:2000"}),
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endpoints.NewAddUpdateOpts("foo/host2", endpoints.Endpoint{Addr: "127.0.0.1:2001"})})
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if err != nil {
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t.Fatal(err)
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}
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ctx, watchCancel := context.WithCancel(context.Background())
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defer watchCancel()
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w, err := em.NewWatchChannel(ctx)
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if err != nil {
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t.Fatal(err)
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}
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updates := <-w
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if len(updates) != 2 {
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t.Fatalf("expected two updates, got %+v", updates)
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}
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_, err = c.Txn(context.TODO()).Then(etcd.OpDelete("foo/host"), etcd.OpDelete("foo/host2")).Commit()
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if err != nil {
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t.Fatal(err)
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}
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updates = <-w
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if len(updates) != 2 || (updates[0].Op != endpoints.Delete && updates[1].Op != endpoints.Delete) {
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t.Fatalf("expected two delete updates, got %+v", updates)
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}
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}
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