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This commit is contained in:
Dave Syer 2014-05-01 09:19:42 +01:00
parent 240788862e
commit b884a73396
5 changed files with 8 additions and 167 deletions
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2
spring-boot-cli/src/it/java/org/springframework/boot/cli/JarCommandIT.java
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@ -22,7 +22,7 @@ import org.junit.Test;
import org.springframework.boot.cli.command.jar.JarCommand;
import org.springframework.boot.cli.infrastructure.CommandLineInvoker;
import org.springframework.boot.cli.infrastructure.CommandLineInvoker.Invocation;
import org.springframework.boot.cli.util.JavaExecutable;
import org.springframework.boot.loader.tools.JavaExecutable;
import static org.hamcrest.Matchers.containsString;
import static org.hamcrest.Matchers.equalTo;

2
spring-boot-cli/src/main/java/org/springframework/boot/cli/command/shell/ForkProcessCommand.java
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@ -23,7 +23,7 @@ import java.util.List;
import org.springframework.boot.cli.command.Command;
import org.springframework.boot.cli.command.options.OptionHelp;
import org.springframework.boot.cli.util.JavaExecutable;
import org.springframework.boot.loader.tools.JavaExecutable;
/**
* Decorate an existing command to run it by forking the current java process.

103
spring-boot-cli/src/main/java/org/springframework/boot/cli/command/shell/RunProcessCommand.java
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@ -16,16 +16,13 @@
package org.springframework.boot.cli.command.shell;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.lang.reflect.Method;
import java.util.Arrays;
import java.util.Collection;
import org.springframework.boot.cli.command.AbstractCommand;
import org.springframework.boot.cli.command.Command;
import org.springframework.util.ReflectionUtils;
import org.springframework.boot.loader.tools.RunProcess;
/**
* Special {@link Command} used to run a process from the shell. NOTE: this command is not
@ -35,16 +32,8 @@ import org.springframework.util.ReflectionUtils;
*/
class RunProcessCommand extends AbstractCommand {
private static final Method INHERIT_IO_METHOD = ReflectionUtils.findMethod(
ProcessBuilder.class, "inheritIO");
private static final long JUST_ENDED_LIMIT = 500;
private final String[] command;
private volatile Process process;
private volatile long endTime;
private volatile RunProcess process;
public RunProcessCommand(String... command) {
super(null, null);
@ -57,94 +46,12 @@ class RunProcessCommand extends AbstractCommand {
}
protected void run(Collection<String> args) throws IOException {
ProcessBuilder builder = new ProcessBuilder(this.command);
builder.command().addAll(args);
builder.redirectErrorStream(true);
boolean inheritedIO = inheritIO(builder);
try {
this.process = builder.start();
if (!inheritedIO) {
redirectOutput(this.process);
}
try {
this.process.waitFor();
}
catch (InterruptedException ex) {
Thread.currentThread().interrupt();
}
}
finally {
this.endTime = System.currentTimeMillis();
this.process = null;
}
this.process = new RunProcess(this.command);
this.process.run(args.toArray(new String[args.size()]));
}
private boolean inheritIO(ProcessBuilder builder) {
try {
INHERIT_IO_METHOD.invoke(builder);
return true;
}
catch (Exception ex) {
return false;
}
}
private void redirectOutput(Process process) {
final BufferedReader reader = new BufferedReader(new InputStreamReader(
process.getInputStream()));
new Thread() {
@Override
public void run() {
try {
String line = reader.readLine();
while (line != null) {
System.out.println(line);
line = reader.readLine();
}
reader.close();
}
catch (Exception ex) {
}
};
}.start();
}
/**
* @return the running process or {@code null}
*/
public Process getRunningProcess() {
return this.process;
}
/**
* @return {@code true} if the process was stopped.
*/
public boolean handleSigInt() {
// if the process has just ended, probably due to this SIGINT, consider handled.
if (hasJustEnded()) {
return true;
}
// destroy the running process
Process process = this.process;
if (process != null) {
try {
process.destroy();
process.waitFor();
this.process = null;
return true;
}
catch (InterruptedException ex) {
Thread.currentThread().interrupt();
}
}
return false;
}
public boolean hasJustEnded() {
return System.currentTimeMillis() < (this.endTime + JUST_ENDED_LIMIT);
return this.process.handleSigInt();
}
}

66
spring-boot-cli/src/main/java/org/springframework/boot/cli/util/JavaExecutable.java
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@ -1,66 +0,0 @@
/*
* Copyright 2012-2014 the original author or authors.
*
* 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 org.springframework.boot.cli.util;
import java.io.File;
import java.io.IOException;
import java.util.Arrays;
import org.springframework.util.Assert;
import org.springframework.util.StringUtils;
/**
* Provides access to the java binary executable, regardless of OS.
*
* @author Phillip Webb
*/
public class JavaExecutable {
private File file;
public JavaExecutable() {
String javaHome = System.getProperty("java.home");
Assert.state(StringUtils.hasLength(javaHome),
"Unable to find java executable due to missing 'java.home'");
this.file = findInJavaHome(javaHome);
}
private File findInJavaHome(String javaHome) {
File bin = new File(new File(javaHome), "bin");
File command = new File(bin, "java.exe");
command = (command.exists() ? command : new File(bin, "java"));
Assert.state(command.exists(), "Unable to find java in " + javaHome);
return command;
}
public ProcessBuilder processBuilder(String... arguments) {
ProcessBuilder processBuilder = new ProcessBuilder(toString());
processBuilder.command().addAll(Arrays.asList(arguments));
return processBuilder;
}
@Override
public String toString() {
try {
return this.file.getCanonicalPath();
}
catch (IOException ex) {
throw new IllegalStateException(ex);
}
}
}

2
spring-boot-tools/spring-boot-loader-tools/src/main/java/org/springframework/boot/loader/tools/RunProcess.java
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@ -48,7 +48,7 @@ public class RunProcess {
this.command = command;
}
public void run(String... args) throws Exception {
public void run(String... args) throws IOException {
run(Arrays.asList(args));
}