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// Copyright 2014 Google Inc. All rights reserved.
//
// 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 com.google.devtools.build.lib.util;
import static com.google.common.base.StandardSystemProperty.USER_NAME;
import com.google.common.base.Strings;
import java.util.Map;
/**
* User information utility methods.
*/
public final class UserUtils {
private static final String ORIGINATING_USER_KEY = "BLAZE_ORIGINATING_USER";
private UserUtils() {
// prohibit instantiation
}
private static class Holder {
static final String userName = USER_NAME.value();
}
/**
* Returns the user name as provided by system property 'user.name'.
*/
public static String getUserName() {
return Holder.userName;
}
/**
* Returns the originating user for this build from the command-line or the environment.
*/
public static String getOriginatingUser(String originatingUser,
Map<String, String> clientEnv) {
if (!Strings.isNullOrEmpty(originatingUser)) {
return originatingUser;
}
if (!Strings.isNullOrEmpty(clientEnv.get(ORIGINATING_USER_KEY))) {
return clientEnv.get(ORIGINATING_USER_KEY);
}
return UserUtils.getUserName();
}
}
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