go.etcd.io/etcd@v3.3.27+incompatible/etcdmain/main.go (about)

     1  // Copyright 2015 The etcd Authors
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package etcdmain
    16  
    17  import (
    18  	"fmt"
    19  	"os"
    20  	"strings"
    21  
    22  	"github.com/coreos/go-systemd/daemon"
    23  	systemdutil "github.com/coreos/go-systemd/util"
    24  )
    25  
    26  func Main() {
    27  	checkSupportArch()
    28  
    29  	if len(os.Args) > 1 {
    30  		cmd := os.Args[1]
    31  		if covArgs := os.Getenv("ETCDCOV_ARGS"); len(covArgs) > 0 {
    32  			args := strings.Split(os.Getenv("ETCDCOV_ARGS"), "\xe7\xcd")[1:]
    33  			rootCmd.SetArgs(args)
    34  			cmd = "grpc-proxy"
    35  		}
    36  		switch cmd {
    37  		case "gateway", "grpc-proxy":
    38  			if err := rootCmd.Execute(); err != nil {
    39  				fmt.Fprint(os.Stderr, err)
    40  				os.Exit(1)
    41  			}
    42  			return
    43  		}
    44  	}
    45  
    46  	startEtcdOrProxyV2()
    47  }
    48  
    49  func notifySystemd() {
    50  	if !systemdutil.IsRunningSystemd() {
    51  		return
    52  	}
    53  	sent, err := daemon.SdNotify(false, "READY=1")
    54  	if err != nil {
    55  		plog.Errorf("failed to notify systemd for readiness: %v", err)
    56  	}
    57  	if !sent {
    58  		plog.Errorf("forgot to set Type=notify in systemd service file?")
    59  	}
    60  }