com.sun.grizzly.jruby.RackGrizzlyAdapter Maven / Gradle / Ivy
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package com.sun.grizzly.jruby;
import com.sun.grizzly.jruby.rack.AbstractRackApplication;
import com.sun.grizzly.jruby.rack.ErrorApplication;
import com.sun.grizzly.jruby.rack.RackApplicationPool;
import com.sun.grizzly.jruby.rack.RackApplicationPoolFactory;
import com.sun.grizzly.tcp.http11.GrizzlyAdapter;
import com.sun.grizzly.tcp.http11.GrizzlyRequest;
import com.sun.grizzly.tcp.http11.GrizzlyResponse;
import com.sun.grizzly.util.buf.ByteChunk;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.FutureTask;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* Adapter implementation that bridges Ruby/Rack based application with Grizzly.
*
* @author TAKAI Naoto
* @author Jean-Francois Arcand
* @author Pramod Gopinath
* @author Vivek Pandey
* @author Peter Williams
*/
public class RackGrizzlyAdapter extends GrizzlyAdapter {
private final Logger logger;
private final int numThreads;
private final boolean asyncExecution;
/*package*/ final String jrubyVersion;
private RackApplicationPool pool;
private ErrorApplication errorApp;
public final JRubyGrizzlyConfigImpl config;
public RackGrizzlyAdapter(JRubyGrizzlyConfigImpl config, boolean asyncExecution) {
super(config.appRoot());
this.config = config;
this.asyncExecution = asyncExecution;
this.logger = config.getLogger();
jrubyVersion = org.jruby.runtime.Constants.VERSION;
logger.log(Level.INFO, Messages.format(Messages.JRUBY_VERSION, jrubyVersion));
numThreads = Math.min(Runtime.getRuntime().availableProcessors(), config.runtimeConfig().getInitRuntime());
}
public boolean async() {
return asyncExecution;
}
public int getNumThreads() {
return numThreads;
}
private FutureTask> jrubyStartUp;
private void startThread() {
ExecutorService exec = Executors.newSingleThreadExecutor();
jrubyStartUp = new FutureTask>(new Callable>() {
public RackApplicationPool call() throws Exception {
return startJRubyRuntime();
}
});
exec.submit(jrubyStartUp, RackApplicationPool.class);
}
@Override
public void start() {
startThread();
}
private RackApplicationPool startJRubyRuntime() {
return RackApplicationPoolFactory.getRackApplocationPool(this);
}
@Override
public void destroy() {
if (errorApp != null) {
errorApp.destroy();
}
if (pool != null)
pool.shutdown();
}
private final static String CSS =
"H1 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:22px;} " +
"H2 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:16px;} " +
"H3 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:14px;} " +
"BODY {font-family:Tahoma,Arial,sans-serif;color:black;background-color:white;} " +
"B {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;} " +
"P {font-family:Tahoma,Arial,sans-serif;background:white;color:black;font-size:12px;}" +
"A {color : black;}" +
"HR {color : #525D76;}";
private byte[] getHtmlPage(String text) {
StringBuffer sb = new StringBuffer();
sb.append("");
sb.append(" ");
sb.append("");
sb.append(text);
sb.append("
");
sb.append("Powered by GlassFish v3");
sb.append("");
return sb.toString().getBytes();
}
private void writeHtml(byte[] bytes, GrizzlyResponse res) {
ByteChunk chunk = new ByteChunk();
chunk.setBytes(bytes, 0, bytes.length);
res.setContentLength(bytes.length);
res.setContentType("text/html");
try {
res.getResponse().sendHeaders();
res.getResponse().doWrite(chunk);
} catch (IOException e) {
logger.log(Level.SEVERE, e.getMessage(), e);
}
}
private void writeHtml(InputStream is, GrizzlyResponse res) throws IOException {
ByteChunk chunk = new ByteChunk();
int d;
int i = 0;
while ((d = is.read()) != -1) {
chunk.append((byte) d);
i++;
}
res.setContentLength(i);
res.setContentType("text/html");
try {
res.getResponse().sendHeaders();
res.getResponse().doWrite(chunk);
} catch (IOException e) {
logger.log(Level.SEVERE, e.getMessage(), e);
}
}
private void throwError(StringBuffer text, Exception e, GrizzlyResponse res) {
res.setStatus(500);
if (config.environment().equals("development") || config.environment().equals("test")) {
text.append("");
text.append(e.getMessage()).append("
");
for (StackTraceElement el : e.getStackTrace()) {
text.append(el.toString() + "
");
}
text.append("
");
}
byte[] bytes = getHtmlPage(text.toString());
writeHtml(bytes, res);
}
StringBuffer loadingHtml = null;
private synchronized InputStream getTransformedHtml(String reqUri) throws IOException {
if(loadingHtml != null){
return new ByteArrayInputStream(loadingHtml.toString().getBytes());
}
loadingHtml = new StringBuffer();
InputStream is = getClass().getClassLoader().getResourceAsStream("loading.html");
String cr = (config.contextRoot().equals("/")) ? config.contextRoot() : config.contextRoot() + "/";
if(reqUri.startsWith(config.contextRoot())){
cr = reqUri;
if(!reqUri.endsWith("/")){
cr += "/";
}
}
int c;
while ((c = is.read()) != -1) {
if (c == '@') {
int d = is.read();
if (d == '@') {
//skip @@CONTEXT_ROOT@@
if (is.skip(14) == 14) {
loadingHtml.append(cr);
}
} else {
loadingHtml.append(Character.toString((char) c));
if (d != -1) {
loadingHtml.append(Character.toString((char) d));
}
}
} else {
loadingHtml.append(Character.toString((char) c));
}
}
return new ByteArrayInputStream(loadingHtml.toString().getBytes());
}
public void service(GrizzlyRequest req, GrizzlyResponse res) {
config.jrubyHttpProbeProvider.requestStartEvent(config.getAppName(), config.contextRoot(), req.getServerName(), req.getServerPort());
if (!jrubyStartUp.isDone()) {
res.setStatus(503);
//jruby is still being loaded, wait for 3 sec
String delta = System.getProperty("jruby.http.retry-after");
if (delta == null) {
delta = "3";
}
res.setHeader("Retry-After", delta);
String cr = (config.contextRoot().equals("/")) ? config.contextRoot() : config.contextRoot() + "/";
InputStream is = new ByteArrayInputStream(getHtmlPage("Server is busy loading the application...
"));
try {
if (req.getRequestURI().endsWith("asynch-1F.gif")) {
is = getClass().getClassLoader().getResourceAsStream("asynch-1F.gif");
} else if (req.getRequestURI().endsWith("backimage.jpg")) {
is = getClass().getClassLoader().getResourceAsStream("backimage.jpg");
} else if (req.getRequestURI().startsWith(config.contextRoot()) || req.getRequestURI().startsWith(config.contextRoot()+"/")) {
if(req.getHeader("x-requested-with") != null){
new ByteArrayInputStream(new byte[]{' '});
}else{
is = getTransformedHtml(req.getRequestURI());
}
}
writeHtml(is, res);
} catch (IOException e) {
byte[] bytes = getHtmlPage("GlassFish is busy loading the application...
");
writeHtml(bytes, res);
}
return;
}
try {
pool = jrubyStartUp.get();
} catch (InterruptedException e) {
logger.log(Level.SEVERE, Messages.format(Messages.RACKGRIZZLYADAPTER_SERVICE_JRUBYINSTANCE_FAILED), e);
StringBuffer text = new StringBuffer();
text.append("Something went wrong on the server.
Check the server log for details!
");
throwError(text, e, res);
return;
} catch (ExecutionException e) {
logger.log(Level.SEVERE, Messages.format(Messages.RACKGRIZZLYADAPTER_SERVICE_JRUBYINSTANCE_FAILED), e);
StringBuffer text = new StringBuffer();
text.append("Something went wrong on the server.
Check the server log for details!
");
throwError(text, e, res);
return;
}
if (pool == null) {
logger.log(Level.SEVERE, Messages.format(Messages.RACKGRIZZLYADAPTER_SERVICE_JRUBYINSTANCE_FAILED));
StringBuffer text = new StringBuffer();
text.append("Something went wrong on the server.
Check the server log for details!
");
res.setStatus(500);
byte[] bytes = getHtmlPage(text.toString());
writeHtml(bytes, res);
return;
}
AbstractRackApplication serviceApp = null;
try {
// Borrow a Runtime
serviceApp = pool.getApp();
if (serviceApp == null) {
throw new IllegalStateException(Messages.format(Messages.JRUBY_RUNTIME_NOTAVAILABLE));
}
dispatchRequest(serviceApp, req, res);
} catch (IOException e) {
e.printStackTrace();
} finally {
if (serviceApp != null) {
pool.returnApp(serviceApp);
}
config.jrubyHttpProbeProvider.requestEndEvent(config.getAppName(), config.contextRoot(), res.getStatus());
}
}
private void dispatchRequest(final AbstractRackApplication app, GrizzlyRequest req, GrizzlyResponse res) throws IOException {
try {
app.call(req).respond(res);
} catch (Exception e) {
res.setError();
if (res.isCommitted()) {
logger.log(Level.WARNING, Messages.format(Messages.RACKGRIZZLYADAPTER_SERVICE_CANTHANDLE_RESCOMIT), e);
return;
}
res.reset();
try {
createErrorApp(app);
req.setAttribute("rack.exception", e);
logger.log(Level.WARNING, e.getMessage(), e);
errorApp.call(req).respond(res);
} catch (Exception ex) {
logger.log(Level.WARNING, Messages.format(Messages.RACKGRIZZLYADAPTER_SERVICE_CANTHANDLE, ex.getMessage()), ex);
res.sendError(500);
}
}
}
private synchronized void createErrorApp(AbstractRackApplication app) {
if (errorApp == null)
errorApp = new ErrorApplication(app.runtime, this);
}
}
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