github.com/cockroachdb/cockroach@v20.2.0-alpha.1+incompatible/pkg/cmd/cmdutil/env.go (about)

     1  // Copyright 2018 The Cockroach Authors.
     2  //
     3  // Use of this software is governed by the Business Source License
     4  // included in the file licenses/BSL.txt.
     5  //
     6  // As of the Change Date specified in that file, in accordance with
     7  // the Business Source License, use of this software will be governed
     8  // by the Apache License, Version 2.0, included in the file
     9  // licenses/APL.txt.
    10  
    11  package cmdutil
    12  
    13  import (
    14  	"log"
    15  	"os"
    16  )
    17  
    18  // RequireEnv returns the value of the environment variable s. If s is unset or
    19  // blank, RequireEnv prints an error message and exits.
    20  func RequireEnv(s string) string {
    21  	v := os.Getenv(s)
    22  	if v == "" {
    23  		log.Fatalf("missing required environment variable %q", s)
    24  	}
    25  	return v
    26  }