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- /*
- * SonarQube
- * Copyright (C) 2009-2019 SonarSource SA
- * mailto:info AT sonarsource DOT com
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 3 of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
- package org.sonar.server.app;
-
- import java.io.File;
- import org.sonar.api.config.Configuration;
- import org.sonar.process.ProcessId;
- import org.sonar.process.sharedmemoryfile.DefaultProcessCommands;
- import org.sonar.process.sharedmemoryfile.ProcessCommands;
-
- import static org.sonar.process.ProcessEntryPoint.PROPERTY_PROCESS_INDEX;
- import static org.sonar.process.ProcessEntryPoint.PROPERTY_SHARED_PATH;
-
- public class ProcessCommandWrapperImpl implements ProcessCommandWrapper {
-
- private static final ProcessMethod<Void> SET_OPERATIONAL = processCommands -> {
- processCommands.setOperational();
- return null;
- };
- private static final ProcessMethod<Void> ASK_FOR_RESTART = processCommands -> {
- processCommands.askForRestart();
- return null;
- };
- private static final ProcessMethod<Void> ASK_FOR_HARD_STOP = processCommands -> {
- processCommands.askForHardStop();
- return null;
- };
- private static final ProcessMethod<Boolean> IS_OPERATIONAL = ProcessCommands::isOperational;
-
- private final Configuration config;
-
- public ProcessCommandWrapperImpl(Configuration config) {
- this.config = config;
- }
-
- @Override
- public void requestSQRestart() {
- call(ASK_FOR_RESTART, selfProcessNumber());
- }
-
- @Override
- public void requestHardStop() {
- call(ASK_FOR_HARD_STOP, selfProcessNumber());
- }
-
- @Override
- public void notifyOperational() {
- call(SET_OPERATIONAL, selfProcessNumber());
- }
-
- @Override
- public boolean isCeOperational() {
- return call(IS_OPERATIONAL, ProcessId.COMPUTE_ENGINE.getIpcIndex());
- }
-
- private int selfProcessNumber() {
- return nonNullAsInt(PROPERTY_PROCESS_INDEX);
- }
-
- private <T> T call(ProcessMethod<T> command, int processNumber) {
- File shareDir = nonNullValueAsFile(PROPERTY_SHARED_PATH);
- try (DefaultProcessCommands commands = DefaultProcessCommands.secondary(shareDir, processNumber)) {
- return command.callOn(commands);
- }
- }
-
- private interface ProcessMethod<T> {
- T callOn(ProcessCommands processCommands);
- }
-
- private int nonNullAsInt(String key) {
- return config.getInt(key).orElseThrow(() -> new IllegalArgumentException(String.format("Property %s is not set", key)));
- }
-
- private File nonNullValueAsFile(String key) {
- return new File(config.get(key).orElseThrow(() -> new IllegalArgumentException(String.format("Property %s is not set", key))));
- }
- }
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