71 lines
1.7 KiB
Go
71 lines
1.7 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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// etcdctl is a command line application that controls etcd.
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package main
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import (
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"fmt"
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"os"
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"go.etcd.io/etcd/v3/etcdctl/ctlv2"
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"go.etcd.io/etcd/v3/etcdctl/ctlv3"
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)
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const (
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apiEnv = "ETCDCTL_API"
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)
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/**
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mainWithError is fully analogous to main, but instead of signaling errors
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by os.Exit, it exposes the error explicitly, such that test-logic can intercept
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control to e.g. dump coverage data (even for test-for-failure scenarios).
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*/
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func mainWithError() error {
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apiv := os.Getenv(apiEnv)
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// unset apiEnv to avoid side-effect for future env and flag parsing.
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os.Unsetenv(apiEnv)
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if len(apiv) == 0 || apiv == "3" {
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return ctlv3.Start()
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}
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if apiv == "2" {
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return ctlv2.Start()
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}
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fmt.Fprintf(os.Stderr, "unsupported API version: %s\n", apiv)
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return fmt.Errorf("unsupported API version: %s", apiv)
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}
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func main() {
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apiv := os.Getenv(apiEnv)
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// unset apiEnv to avoid side-effect for future env and flag parsing.
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os.Unsetenv(apiEnv)
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if len(apiv) == 0 || apiv == "3" {
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ctlv3.MustStart()
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return
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}
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if apiv == "2" {
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ctlv2.MustStart()
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return
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}
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fmt.Fprintf(os.Stderr, "unsupported API version: %v\n", apiv)
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os.Exit(1)
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}
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