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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.
71 lines
2.1 KiB
Go
71 lines
2.1 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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"testing"
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"go.etcd.io/etcd/client/v3/naming/endpoints"
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"go.etcd.io/etcd/client/v3/naming/resolver"
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"google.golang.org/grpc"
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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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// This test mimics scenario described in grpc_naming.md doc.
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func TestEtcdGrpcResolver(t *testing.T) {
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t.Skip("Not implemented yet")
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defer testutil.AfterTest(t)
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// s1 := // TODO: Dummy GRPC service listening on 127.0.0.1:20000
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// s2 := // TODO: Dummy GRPC service listening on 127.0.0.1:20001
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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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e1 := endpoints.Endpoint{Addr: "127.0.0.1:20000"}
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e2 := endpoints.Endpoint{Addr: "127.0.0.1:20001"}
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err = em.AddEndpoint(context.TODO(), "foo/e1", 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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etcdResolver, err := resolver.NewBuilder(clus.RandClient())
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conn, err := grpc.Dial("etc://foo", grpc.WithResolvers(etcdResolver))
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if err != nil {
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t.Fatal("failed to connect to foo (e1)", err)
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}
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// TODO: send requests to conn, ensure s1 received it.
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em.DeleteEndpoint(context.TODO(), "foo/e1")
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em.AddEndpoint(context.TODO(), "foo/e2", e2)
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// TODO: Send requests to conn and make sure s2 receive it.
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// Might require restarting s1 to break the existing (open) connection.
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conn.GetState() // this line is to avoid compiler warning that conn is unused.
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}
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