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com.intuit.karate.shell.Command Maven / Gradle / Ivy
/*
* The MIT License
*
* Copyright 2018 Intuit Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package com.intuit.karate.shell;
import com.intuit.karate.FileUtils;
import com.intuit.karate.Http;
import com.intuit.karate.LogAppender;
import com.intuit.karate.Logger;
import com.intuit.karate.StringUtils;
import com.intuit.karate.http.Response;
import org.slf4j.LoggerFactory;
import java.io.File;
import java.net.InetSocketAddress;
import java.net.ServerSocket;
import java.net.SocketAddress;
import java.nio.channels.SocketChannel;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import java.util.function.Consumer;
import java.util.function.Predicate;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Command extends Thread {
protected static final org.slf4j.Logger LOGGER = LoggerFactory.getLogger(Command.class);
private final boolean useLineFeed;
private final File workingDir;
private final String uniqueName;
private final Logger logger;
private final String[] args;
private final List argList; // just for logging
private final boolean sharedAppender;
private final LogAppender appender;
private Map environment;
private Consumer listener;
private Consumer errorListener;
private boolean redirectErrorStream = true;
private Console sysOut;
private Console sysErr;
private Process process;
private int exitCode = -1;
private Exception failureReason;
private int pollAttempts = 30;
private int pollInterval = 250;
public void setPollAttempts(int pollAttempts) {
this.pollAttempts = pollAttempts;
}
public void setPollInterval(int pollInterval) {
this.pollInterval = pollInterval;
}
public synchronized boolean isFailed() {
return failureReason != null;
}
public Exception getFailureReason() {
return failureReason;
}
public void setEnvironment(Map environment) {
this.environment = environment;
}
public void setListener(Consumer listener) {
this.listener = listener;
}
public void setErrorListener(Consumer errorListener) {
this.errorListener = errorListener;
}
public void setRedirectErrorStream(boolean redirectErrorStream) {
this.redirectErrorStream = redirectErrorStream;
}
public String getSysOut() {
return sysOut == null ? null : sysOut.getBuffer();
}
public String getSysErr() {
return sysErr == null ? null : sysErr.getBuffer();
}
public static String exec(boolean useLineFeed, File workingDir, String... args) {
Command command = new Command(useLineFeed, workingDir, args);
command.start();
command.waitSync();
return command.getSysOut();
}
private static final Pattern CLI_ARG = Pattern.compile("'([^']*)'[^\\S]|\"([^\"]*)\"[^\\S]|(\\S+)");
public static String[] tokenize(String command) {
List args = new ArrayList();
Matcher m = CLI_ARG.matcher(command + " ");
while (m.find()) {
if (m.group(1) != null) {
args.add(m.group(1));
} else if (m.group(2) != null) {
args.add(m.group(2));
} else {
args.add(m.group(3));
}
}
return args.toArray(new String[args.size()]);
}
public static String execLine(File workingDir, String command) {
return exec(false, workingDir, tokenize(command));
}
public static String[] prefixShellArgs(String[] args) {
List list = new ArrayList();
switch (FileUtils.getOsType()) {
case WINDOWS:
list.add("cmd");
list.add("/c");
break;
default:
list.add("sh");
list.add("-c");
}
list.add(StringUtils.join(args, ' '));
return list.toArray(new String[list.size()]);
}
private static final Set PORTS_IN_USE = ConcurrentHashMap.newKeySet();
public static synchronized int getFreePort(int preferred) {
if (preferred != 0 && PORTS_IN_USE.contains(preferred)) {
LOGGER.trace("preferred port {} in use (karate), will attempt to find free port ...", preferred);
preferred = 0;
}
try {
ServerSocket s = new ServerSocket(preferred);
int port = s.getLocalPort();
LOGGER.debug("found / verified free local port: {}", port);
s.close();
PORTS_IN_USE.add(port);
return port;
} catch (Exception e) {
if (preferred > 0) {
LOGGER.trace("preferred port {} in use (system), re-trying ...", preferred);
PORTS_IN_USE.add(preferred);
return getFreePort(0);
}
LOGGER.error("failed to find free port: {}", e.getMessage());
throw new RuntimeException(e);
}
}
private static void sleep(int millis) {
try {
LOGGER.trace("sleeping for millis: {}", millis);
Thread.sleep(millis);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
public boolean waitForPort(String host, int port) {
int attempts = 0;
do {
SocketAddress address = new InetSocketAddress(host, port);
try {
if (isFailed()) {
throw failureReason;
}
logger.debug("poll attempt #{} for port to be ready - {}:{}", attempts, host, port);
SocketChannel sock = SocketChannel.open(address);
sock.close();
return true;
} catch (Exception e) {
sleep(pollInterval);
}
} while (attempts++ < pollAttempts);
return false;
}
private static final int SLEEP_TIME = 2000;
private static final int POLL_ATTEMPTS_MAX = 30;
public static boolean waitForHttp(String url) {
return waitForHttp(url, r -> r.getStatus() == 200);
}
public static boolean waitForHttp(String url, Predicate condition) {
int attempts = 0;
long startTime = System.currentTimeMillis();
Http http = Http.to(url);
do {
if (attempts > 0) {
LOGGER.debug("attempt #{} waiting for http to be ready at: {}", attempts, url);
}
try {
Response response = http.get();
if (condition.test(response)) {
long elapsedTime = System.currentTimeMillis() - startTime;
LOGGER.debug("ready to accept http connections after {} ms - {}", elapsedTime, url);
return true;
} else {
LOGGER.warn("not ready / http get returned status: {} - {}", response.getStatus(), url);
}
} catch (Exception e) {
sleep(SLEEP_TIME);
}
} while (attempts++ < POLL_ATTEMPTS_MAX);
return false;
}
public static boolean waitForSocket(int port) {
StopListenerThread waiter = new StopListenerThread(port, () -> {
LOGGER.info("*** exited socket wait succesfully");
});
waiter.start();
port = waiter.getPort();
System.out.println("*** waiting for socket, type the command below:\ncurl http://localhost:"
+ port + "\nin a new terminal (or open the URL in a web-browser) to proceed ...");
try {
waiter.join();
return true;
} catch (Exception e) {
LOGGER.warn("*** wait thread failed: {}", e.getMessage());
return false;
}
}
public Command(String... args) {
this(false, null, null, null, null, args);
}
public Command(boolean useLineFeed, File workingDir, String... args) {
this(useLineFeed, null, null, null, workingDir, args);
}
public Command(boolean useLineFeed, Logger logger, String uniqueName, String logFile, File workingDir, String... args) {
this.useLineFeed = useLineFeed;
setDaemon(true);
this.uniqueName = uniqueName == null ? System.currentTimeMillis() + "" : uniqueName;
setName(this.uniqueName);
this.logger = logger == null ? new Logger() : logger;
this.workingDir = workingDir;
this.args = args;
if (workingDir != null) {
workingDir.mkdirs();
}
argList = Arrays.asList(args);
if (logFile == null) {
appender = new StringLogAppender(useLineFeed);
sharedAppender = false;
} else { // don't create new file if re-using an existing appender
LogAppender temp = this.logger.getAppender();
sharedAppender = temp != null;
if (sharedAppender) {
appender = temp;
} else {
appender = new FileLogAppender(new File(logFile));
this.logger.setAppender(appender);
}
}
}
public Map getEnvironment() {
return environment;
}
public File getWorkingDir() {
return workingDir;
}
public List getArgList() {
return argList;
}
public Logger getLogger() {
return logger;
}
public LogAppender getAppender() {
return appender;
}
public String getUniqueName() {
return uniqueName;
}
public int getExitCode() {
return exitCode;
}
public int waitSync() {
try {
join();
return exitCode;
} catch (InterruptedException e) {
throw new RuntimeException(e);
}
}
public void close(boolean force) {
LOGGER.debug("closing command: {}", uniqueName);
if (force) {
process.destroyForcibly();
} else {
process.destroy();
}
}
@Override
public void run() {
try {
logger.debug("command: {}, working dir: {}", argList, workingDir);
ProcessBuilder pb = new ProcessBuilder(args);
if (environment != null) {
pb.environment().putAll(environment);
environment = pb.environment();
}
logger.trace("env PATH: {}", pb.environment().get("PATH"));
if (workingDir != null) {
pb.directory(workingDir);
}
pb.redirectErrorStream(redirectErrorStream);
process = pb.start();
sysOut = new Console(uniqueName + "-out", useLineFeed, process.getInputStream(), logger, appender, listener);
sysOut.start();
sysErr = new Console(uniqueName + "-err", useLineFeed, process.getErrorStream(), logger, appender, errorListener);
sysErr.start();
exitCode = process.waitFor();
if (exitCode == 0) {
LOGGER.debug("command complete, exit code: {} - {}", exitCode, argList);
} else {
LOGGER.warn("exit code was non-zero: {} - {} working dir: {}", exitCode, argList, workingDir);
}
// the consoles actually can take more time to flush even after the process has exited
sysErr.join();
sysOut.join();
LOGGER.trace("console readers complete");
if (!sharedAppender) {
appender.close();
}
} catch (Exception e) {
failureReason = e;
LOGGER.error("command error: {} - {}", argList, e.getMessage());
}
}
}
