/*
* Copyright 2000-2016 JetBrains s.r.o.
*
* 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.intellij.openapi.application;
import com.intellij.openapi.util.text.StringUtil;
import org.jetbrains.annotations.NotNull;
import java.util.UUID;
import java.util.prefs.Preferences;
/**
* UUID identifying pair user@computer
*/
public class PermanentInstallationID {
private static final String INSTALLATION_ID_KEY = "user_id_on_machine";
private static final String INSTALLATION_ID = calculateInstallationId();
@NotNull
public static String get() {
return INSTALLATION_ID;
}
private static String calculateInstallationId() {
final Preferences prefs = Preferences.userRoot().node("consulo");
String installationId = prefs.get(INSTALLATION_ID_KEY, null);
if (StringUtil.isEmptyOrSpaces(installationId)) {
installationId = UUID.randomUUID().toString();
prefs.put(INSTALLATION_ID_KEY, installationId);
}
return installationId;
}
}