integration: a few v3 grpc api tests

integration/v3_grpc_test.go

@@ -0,0 +1,195 @@
+// Copyright 2016 CoreOS, Inc.
+//
+// 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 recipe
+package integration
+
+import (
+	"math/rand"
+	"reflect"
+	"testing"
+
+	"github.com/coreos/etcd/Godeps/_workspace/src/golang.org/x/net/context"
+	"github.com/coreos/etcd/Godeps/_workspace/src/google.golang.org/grpc"
+	pb "github.com/coreos/etcd/etcdserver/etcdserverpb"
+)
+
+type clusterV3 struct {
+	*cluster
+	conns []*grpc.ClientConn
+}
+
+// newClusterGRPC returns a launched cluster with a grpc client connection
+// for each cluster member.
+func newClusterGRPC(t *testing.T, cfg *clusterConfig) *clusterV3 {
+	cfg.useV3 = true
+	cfg.useGRPC = true
+	clus := &clusterV3{cluster: NewClusterByConfig(t, cfg)}
+	for _, m := range clus.Members {
+		conn, err := NewGRPCClient(m)
+		if err != nil {
+			t.Fatal(err)
+		}
+		clus.conns = append(clus.conns, conn)
+	}
+	clus.Launch(t)
+	return clus
+}
+
+func (c *clusterV3) Terminate(t *testing.T) {
+	for _, conn := range c.conns {
+		if err := conn.Close(); err != nil {
+			t.Error(err)
+		}
+	}
+	c.cluster.Terminate(t)
+}
+
+func (c *clusterV3) RandConn() *grpc.ClientConn {
+	return c.conns[rand.Intn(len(c.conns))]
+}
+
+// TestV3PutOverwrite puts a key with the v3 api to a random cluster member,
+// overwrites it, then checks that the change was applied.
+func TestV3PutOverwrite(t *testing.T) {
+	clus := newClusterGRPC(t, &clusterConfig{size: 3})
+	defer clus.Terminate(t)
+
+	kvc := pb.NewKVClient(clus.RandConn())
+	key := []byte("foo")
+	reqput := &pb.PutRequest{Key: key, Value: []byte("bar")}
+
+	respput, err := kvc.Put(context.TODO(), reqput)
+	if err != nil {
+		t.Fatalf("couldn't put key (%v)", err)
+	}
+
+	// overwrite
+	reqput.Value = []byte("baz")
+	respput2, err := kvc.Put(context.TODO(), reqput)
+	if err != nil {
+		t.Fatalf("couldn't put key (%v)", err)
+	}
+	if respput2.Header.Revision <= respput.Header.Revision {
+		t.Fatalf("expected newer revision on overwrite, got %v <= %v",
+			respput2.Header.Revision, respput.Header.Revision)
+	}
+
+	reqrange := &pb.RangeRequest{Key: key}
+	resprange, err := kvc.Range(context.TODO(), reqrange)
+	if err != nil {
+		t.Fatalf("couldn't get key (%v)", err)
+	}
+	if len(resprange.Kvs) != 1 {
+		t.Fatalf("expected 1 key, got %v", len(resprange.Kvs))
+	}
+
+	kv := resprange.Kvs[0]
+	if kv.ModRevision <= kv.CreateRevision {
+		t.Errorf("expected modRev > createRev, got %d <= %d",
+			kv.ModRevision, kv.CreateRevision)
+	}
+	if !reflect.DeepEqual(reqput.Value, kv.Value) {
+		t.Errorf("expected value %v, got %v", reqput.Value, kv.Value)
+	}
+}
+
+// TestV3DeleteRange tests various edge cases in teh DeleteRange API.
+func TestV3DeleteRange(t *testing.T) {
+	tests := []struct {
+		keySet []string
+		begin  string
+		end    string
+
+		wantSet [][]byte
+	}{
+		// delete middle
+		{
+			[]string{"foo", "foo/abc", "fop"},
+			"foo/", "fop",
+			[][]byte{[]byte("foo"), []byte("fop")},
+		},
+		// no delete
+		{
+			[]string{"foo", "foo/abc", "fop"},
+			"foo/", "foo/",
+			[][]byte{[]byte("foo"), []byte("foo/abc"), []byte("fop")},
+		},
+		// delete first
+		{
+			[]string{"foo", "foo/abc", "fop"},
+			"fo", "fop",
+			[][]byte{[]byte("fop")},
+		},
+		// delete tail
+		{
+			[]string{"foo", "foo/abc", "fop"},
+			"foo/", "fos",
+			[][]byte{[]byte("foo")},
+		},
+		// delete exact
+		{
+			[]string{"foo", "foo/abc", "fop"},
+			"foo/abc", "",
+			[][]byte{[]byte("foo"), []byte("fop")},
+		},
+		// delete none, [x,x)
+		{
+			[]string{"foo"},
+			"foo", "foo",
+			[][]byte{[]byte("foo")},
+		},
+	}
+
+	for i, tt := range tests {
+		clus := newClusterGRPC(t, &clusterConfig{size: 3})
+		kvc := pb.NewKVClient(clus.RandConn())
+
+		ks := tt.keySet
+		for j := range ks {
+			reqput := &pb.PutRequest{Key: []byte(ks[j]), Value: []byte{}}
+			_, err := kvc.Put(context.TODO(), reqput)
+			if err != nil {
+				t.Fatalf("couldn't put key (%v)", err)
+			}
+		}
+
+		dreq := &pb.DeleteRangeRequest{
+			Key:      []byte(tt.begin),
+			RangeEnd: []byte(tt.end)}
+		dresp, err := kvc.DeleteRange(context.TODO(), dreq)
+		if err != nil {
+			t.Fatalf("couldn't delete range on test %d (%v)", i, err)
+		}
+
+		rreq := &pb.RangeRequest{Key: []byte{0x0}, RangeEnd: []byte{0xff}}
+		rresp, err := kvc.Range(context.TODO(), rreq)
+		if err != nil {
+			t.Errorf("couldn't get range on test %v (%v)", i, err)
+		}
+		if dresp.Header.Revision != rresp.Header.Revision {
+			t.Errorf("expected revision %v, got %v",
+				dresp.Header.Revision, rresp.Header.Revision)
+		}
+
+		keys := [][]byte{}
+		for j := range rresp.Kvs {
+			keys = append(keys, rresp.Kvs[j].Key)
+		}
+		if reflect.DeepEqual(tt.wantSet, keys) == false {
+			t.Errorf("expected %v on test %v, got %v", tt.wantSet, i, keys)
+		}
+
+		// can't defer because tcp ports will be in use
+		clus.Terminate(t)
+	}
+}