tests: Backport etcdctl

Signed-off-by: Marek Siarkowicz <siarkowicz@google.com>

tests/e2e/etcdctl.go

@@ -0,0 +1,93 @@
+// Copyright 2022 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 e2e
+
+import (
+	"encoding/json"
+	"fmt"
+	"strings"
+
+	"go.etcd.io/etcd/clientv3"
+)
+
+type EtcdctlV3 struct {
+	connType  clientConnType
+	isAutoTLS bool
+	endpoints []string
+}
+
+func NewEtcdctl(endpoints []string, connType clientConnType, isAutoTLS bool) *EtcdctlV3 {
+	return &EtcdctlV3{
+		endpoints: endpoints,
+		connType:  connType,
+		isAutoTLS: isAutoTLS,
+	}
+}
+
+func (ctl *EtcdctlV3) Get(key string) (*clientv3.GetResponse, error) {
+	var resp clientv3.GetResponse
+	err := ctl.spawnJsonCmd(&resp, "get", key)
+	return &resp, err
+}
+
+func (ctl *EtcdctlV3) Put(key, value string) error {
+	args := ctl.cmdArgs()
+	args = append(args, "put", key, value)
+	return spawnWithExpect(args, "OK")
+}
+
+func (ctl *EtcdctlV3) AlarmList() (*clientv3.AlarmResponse, error) {
+	var resp clientv3.AlarmResponse
+	err := ctl.spawnJsonCmd(&resp, "alarm", "list")
+	return &resp, err
+}
+
+func (ctl *EtcdctlV3) MemberList() (*clientv3.MemberListResponse, error) {
+	var resp clientv3.MemberListResponse
+	err := ctl.spawnJsonCmd(&resp, "member", "list")
+	return &resp, err
+}
+
+func (ctl *EtcdctlV3) Compact(rev int64) (*clientv3.CompactResponse, error) {
+	args := ctl.cmdArgs("compact", fmt.Sprint(rev))
+	return nil, spawnWithExpect(args, fmt.Sprintf("compacted revision %v", rev))
+}
+
+func (ctl *EtcdctlV3) spawnJsonCmd(output interface{}, args ...string) error {
+	args = append(args, "-w", "json")
+	cmd, err := spawnCmd(append(ctl.cmdArgs(), args...))
+	if err != nil {
+		return err
+	}
+	line, err := cmd.Expect("header")
+	if err != nil {
+		return err
+	}
+	return json.Unmarshal([]byte(line), output)
+}
+
+func (ctl *EtcdctlV3) cmdArgs(args ...string) []string {
+	cmdArgs := []string{ctlBinPath + "3"}
+	for k, v := range ctl.flags() {
+		cmdArgs = append(cmdArgs, fmt.Sprintf("--%s=%s", k, v))
+	}
+	return append(cmdArgs, args...)
+}
+
+func (ctl *EtcdctlV3) flags() map[string]string {
+	fmap := make(map[string]string)
+	fmap["endpoints"] = strings.Join(ctl.endpoints, ",")
+	return fmap
+}