com.sun.grizzly.jruby.RailsAdapter Maven / Gradle / Ivy
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package com.sun.grizzly.jruby;
import com.sun.grizzly.http.SelectorThread;
import com.sun.grizzly.jruby.rack.RackAdapter;
import com.sun.grizzly.jruby.rack.RackApplication;
import com.sun.grizzly.jruby.rack.RackApplicationChooser;
import com.sun.grizzly.jruby.rack.RackApplicationFactory;
import com.sun.grizzly.tcp.http11.GrizzlyAdapter;
import com.sun.grizzly.tcp.http11.GrizzlyRequest;
import com.sun.grizzly.tcp.http11.GrizzlyResponse;
import org.jruby.Ruby;
import org.jruby.RubyThread;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import java.util.WeakHashMap;
import java.util.logging.Level;
/**
* Adapter implementation that bridges JRuby on Rails with Grizzly.
*
* @author TAKAI Naoto
* @author Jean-Francois Arcand
* @author Pramod Gopinath
* @author Vivek Pandey
* @author Peter Williams
*/
public class RailsAdapter extends GrizzlyAdapter {
private RackAdapter handler;
private RubyRuntimeAsyncFilter asyncFilter;
private final String contextRoot;
private final String appRoot;
private final int numThreads;
private final int runtimes;
private final int minRuntimes;
private final int maxRuntimes;
private final boolean asyncExecution;
private RackApplicationFactory factory;
private final boolean debugMode;
public RailsAdapter(String railsRoot, String jrubyLib, int numRt, int minRt, int maxRt, boolean asyncExecution, RubyRuntimeAsyncFilter asyncFilter) {
this("/", railsRoot, jrubyLib, numRt, minRt, maxRt, asyncExecution);
this.asyncFilter = asyncFilter;
//asyncFilter.setRubyRuntimeQueue(pool.getObjectQueue());
}
public RailsAdapter(String contextRoot, String appRoot, String jrubyLib, int numRt, int minRuntime, int maxRuntime, boolean asyncExecution) {
super(appRoot);
this.setHandleStaticResources(false);
this.setRootFolder(appRoot + "public");
this.contextRoot = contextRoot;
this.appRoot = appRoot;
//adapter = new RubyAdapter(appRoot, jrubyLib);
this.runtimes = numRt;
this.maxRuntimes = maxRuntime;
this.minRuntimes = minRuntime;
this.asyncExecution = asyncExecution;
//JRuby 1.1.4 and below has a bug where multiple runtimes cannot start at the same time due to Servlea static HashSet.
// It is fixed and will be available in 1.1.5. Until then, we will not attempt to start multiple runtimes at the same time
JRubyVersion jrubyVersion = new JRubyVersion();
if (jrubyVersion.compare("1.1.5") < 0)
numThreads = 1;
else
numThreads = Math.min(Runtime.getRuntime().availableProcessors(), numRt);
handler = RackApplicationChooser.getFactory(appRoot, SelectorThread.logger(), this);
factory = handler.getFactory();
logger.log(Level.INFO, Messages.format(Messages.JRUBY_VERSION, jrubyVersion));
this.debugMode = (jrubyVersion.compare("1.1.4") < 0);
}
public int getRuntimes() {
return runtimes;
}
public int getMinRuntimes() {
return minRuntimes;
}
public int getMaxRuntimes() {
return maxRuntimes;
}
public boolean async() {
return asyncExecution;
}
public int getNumThreads() {
return numThreads;
}
public String getContextRoot(){
return contextRoot;
}
/**
* JRuby version, assumes the version to be of format major.minor.suffix
*/
private static class JRubyVersion {
private final int major, minor, suffix;
public JRubyVersion() {
this(org.jruby.runtime.Constants.VERSION);
}
private JRubyVersion(String version) {
int i = version.lastIndexOf('.');
if (i != -1) {
suffix = Integer.parseInt(version.substring(i + 1, version.length()));
int j = version.substring(0, i).lastIndexOf('.');
if (j != -1) {
minor = Integer.parseInt(version.substring(j + 1, i));
if (j != 0)
major = Integer.parseInt(version.substring(0, j));
else
major = 0;
} else {
minor = 0;
major = 1;
}
} else {
major = minor = suffix = 0;
}
}
/**
* Returns > 1 if this.version is greater than the given version, <0 is less and 0 if equal.
*
* @param version version to be compared to
* @return if this version is less than, greater, or equal to the provided version
*/
public int compare(JRubyVersion version) {
int result = major - version.major;
if (result == 0) {
result = minor - version.minor;
if (result == 0) {
result = suffix - version.suffix;
}
}
return result;
}
public int compare(String version) {
return compare(new JRubyVersion(version));
}
@Override
public String toString() {
return major + "." + minor + "." + suffix;
}
}
/**
* JavaEmbedUtils.terminate(runtime);
* Start the runtime pool, using the settings specified at creation
*/
// void startRubyRuntimePool() {
// try {
// SelectorThread.logger().log(Level.INFO, Messages.format(Messages.RAILS_STARTING));
// //pool.start(numThreads);
//
// //adapter = new RackApplicationPoolAdapter();
// GrizzlyContext context = new GrizzlyContext(this, factory.getRuntime(), factory);
// factory.getRuntime().defineReadonlyVariable("$grizzly_context",
// JavaEmbedUtils.javaToRuby(factory.getRuntime(), context));
// IRubyObject loggerObj = JavaEmbedUtils.javaToRuby(factory.getRuntime(), new Logger(getLogger()));
// factory.getRuntime().defineReadonlyVariable("$logger", loggerObj);
// String log_level = getEffectiveLogLevel();
// IRubyObject GF_log_level = JavaEmbedUtils.javaToRuby(factory.getRuntime(), log_level);
// factory.getRuntime().defineReadonlyVariable("$glassfish_log_level", GF_log_level);
// handler.initialize();
// } catch (RaiseException e) {
// e.printStackTrace();
// System.out.println(e.getMessage());
// // try to put some helpful information in the logs
// RubyException re = e.getException();
// String rubyMessage = re.message.asJavaString();
// String message = Messages.format(Messages.RAILS_LOAD_FAILED, rubyMessage) + "\n";
// RubyArray backtrace = (RubyArray) re.backtrace();
// for (Object aBacktrace : backtrace) {
// String traceLine = (String) aBacktrace;
// message += "\t" + traceLine + "\n";
// }
//
// getLogger().log(Level.SEVERE, message, e);
// throw e;
// }
// }
void stopRubyRuntimePool() {
handler.shutdown();
}
public java.util.logging.Logger getLogger() {
return logger;
}
/**
* Logger to pass on to Rails Logger
*/
private static class Logger {
private final java.util.logging.Logger logger;
public Logger(java.util.logging.Logger logger) {
this.logger = logger;
}
// Log all messages at FINE level by default: Rails doesn't have log levels, and will generate at least 8 messages for every request that it serves, which floods everything
public void log(String msg) {
logger.fine(msg);
}
public void info(String msg) {
logger.info(msg);
}
public void warning(String msg) {
logger.warning(msg);
}
public void severe(String msg) {
logger.severe(msg);
}
public void fine (String msg) {
logger.fine(msg);
}
}
// This method should be removed when glassfish/java.util.logger actually implements this
private String getEffectiveLogLevel() {
Level myLevel = null;
java.util.logging.Logger pLog = logger;
myLevel = pLog.getLevel();
while (myLevel == null) {
pLog = pLog.getParent();
myLevel = pLog.getLevel();
}
return myLevel.getName();
}
public void service(GrizzlyRequest req, GrizzlyResponse res) {
RackApplication serviceApp = null;
try {
// Borrow a Runtime
serviceApp = handler.getApp();
if (serviceApp == null) {
throw new IllegalStateException(Messages.format(Messages.JRUBY_RUNTIME_NOTAVAILABLE));
}
// Leave all processing to the runtime
if (debugMode) {
//This is only so that NB 6.5 beta works with jruby < 1.1.3.
//FIX ME: remove after
dispatchRailsRequestDebugMode(serviceApp, req, res);
} else {
dispatchRailsRequest(serviceApp, req, res);
}
} catch (IOException e) {
e.printStackTrace();
} finally {
if (serviceApp != null) {
handler.returnApp(serviceApp);
if (asyncFilter != null) {
asyncFilter.resume();
}
}
}
}
private final Map> threadMaps =
new HashMap>();
private RubyThread getContextThread(Ruby runtime) {
RubyThread contextThread = null;
synchronized (threadMaps) {
WeakHashMap threadMap = threadMaps.get(runtime);
if (threadMap != null) {
contextThread = threadMap.get(Thread.currentThread());
} else {
threadMap = new WeakHashMap();
threadMaps.put(runtime, threadMap);
}
if (contextThread == null) {
contextThread = RubyThread.adopt(runtime.getThread(), Thread.currentThread());
threadMap.put(Thread.currentThread(), contextThread);
}
}
return contextThread;
}
private void dispatchRailsRequestDebugMode(RackApplication app, GrizzlyRequest req, GrizzlyResponse res) throws IOException {
RubyThread oldContext = app.getRuntime().getThreadService().getMainThread();
try {
RubyThread context = getContextThread(app.getRuntime());
app.getRuntime().getThreadService().setMainThread(context);
dispatchRailsRequest(app, req, res);
} finally {
app.getRuntime().getThreadService().setMainThread(oldContext);
}
}
private void dispatchRailsRequest(final RackApplication app, GrizzlyRequest req, GrizzlyResponse res) throws IOException {
try {
app.call(req).respond(res);
} catch (Exception e) {
res.setError();
e.printStackTrace();
if (res.isCommitted()) {
logger.log(Level.WARNING, "Error: Couldn't handle error: response committed", e);
return;
}
res.reset();
try {
RackApplication errorApp = factory.getErrorApplication(app.getRuntime());
req.setAttribute("rack.exception", e);
logger.log(Level.WARNING, e.getMessage(), e);
errorApp.call(req).respond(res);
} catch (Exception ex) {
logger.log(Level.WARNING, "Error: Couldn't handle error", ex);
res.sendError(500);
}
}
}
String getAppRoot(){
return appRoot;
}
}
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