| // Copyright (C) 2020 The Android Open Source Project |
| // |
| // 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.googlesource.gerrit.plugins.replication.pull.fetch; |
| |
| import com.google.common.flogger.FluentLogger; |
| import com.google.inject.TypeLiteral; |
| import com.google.inject.assistedinject.AssistedInjectBinding; |
| import com.google.inject.assistedinject.AssistedInjectTargetVisitor; |
| import com.google.inject.assistedinject.AssistedMethod; |
| import com.google.inject.spi.DefaultBindingTargetVisitor; |
| import java.io.BufferedReader; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.InputStreamReader; |
| import java.util.concurrent.TimeUnit; |
| import java.util.stream.Collectors; |
| |
| public class CGitFetchValidator extends DefaultBindingTargetVisitor<FetchFactory, Void> |
| implements AssistedInjectTargetVisitor<FetchFactory, Void> { |
| private static final FluentLogger logger = FluentLogger.forEnclosingClass(); |
| |
| private int DEFAULT_TIMEOUT_IN_SECONDS = 10; |
| |
| @Override |
| public Void visit(AssistedInjectBinding<? extends FetchFactory> binding) { |
| TypeLiteral<CGitFetch> nativeGitFetchType = new TypeLiteral<>() {}; |
| for (AssistedMethod method : binding.getAssistedMethods()) { |
| if (method.getImplementationType().equals(nativeGitFetchType)) { |
| String[] command = new String[] {"git", "--version"}; |
| |
| ProcessBuilder pb = new ProcessBuilder().command(command); |
| try { |
| Process process = pb.start(); |
| |
| boolean isFinished = process.waitFor(DEFAULT_TIMEOUT_IN_SECONDS, TimeUnit.SECONDS); |
| if (!isFinished) { |
| throw new IllegalStateException( |
| "Timeout while checking if native git client is available"); |
| } |
| if (process.exitValue() != 0) { |
| String errorMessage = readMessage(process.getErrorStream()); |
| throw new IllegalStateException( |
| String.format( |
| "Cannot check if native git client is available, error message: %s}", |
| errorMessage)); |
| } |
| |
| String commandOutputMessage = readMessage(process.getInputStream()); |
| logger.atInfo().log("Native git client version: %s", commandOutputMessage); |
| } catch (IOException e) { |
| throw new IllegalStateException( |
| "Cannot start process to check if native git client is available", e); |
| } catch (InterruptedException e) { |
| throw new IllegalStateException( |
| "Timeout while checking if native git client is available"); |
| } |
| } |
| } |
| return null; |
| } |
| |
| private String readMessage(InputStream stream) { |
| return new BufferedReader(new InputStreamReader(stream)) |
| .lines() |
| .collect(Collectors.joining("\n")); |
| } |
| } |