org.jruby.ext.NetProtocolBufferedIO Maven / Gradle / Ivy
/***** BEGIN LICENSE BLOCK *****
* Version: CPL 1.0/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Common Public
* License Version 1.0 (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.eclipse.org/legal/cpl-v10.html
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* Copyright (C) 2008 Ola Bini
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
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package org.jruby.ext;
import java.io.IOException;
import java.nio.channels.SelectionKey;
import java.nio.channels.Selector;
import java.nio.channels.SelectableChannel;
import org.jruby.anno.JRubyClass;
import org.jruby.anno.JRubyMethod;
import org.jruby.anno.JRubyModule;
import org.jruby.RubyObject;
import org.jruby.RubyNumeric;
import org.jruby.RubyIO;
import org.jruby.Ruby;
import org.jruby.RubyException;
import org.jruby.RubyModule;
import org.jruby.RubyClass;
import org.jruby.RubyString;
import org.jruby.runtime.builtin.IRubyObject;
import org.jruby.util.io.ChannelStream;
import org.jruby.exceptions.RaiseException;
import org.jruby.util.io.SelectorFactory;
import java.nio.channels.spi.SelectorProvider;
import org.jruby.util.io.BadDescriptorException;
import org.jruby.util.io.OpenFile;
import org.jruby.util.io.Stream;
/**
* @author Ola Bini
*/
@JRubyClass(name="Net::BufferedIO")
public class NetProtocolBufferedIO {
public static void create(Ruby runtime) {
RubyModule mNet = runtime.getModule("Net");
RubyClass cBufferedIO = (RubyClass)mNet.getConstant("BufferedIO");
cBufferedIO.defineAnnotatedMethods(NetProtocolBufferedIO.class);
RubyModule mNativeImpl = cBufferedIO.defineModuleUnder("NativeImplementation");
mNativeImpl.defineAnnotatedMethods(NativeImpl.class);
}
@JRubyMethod(required = 1)
public static IRubyObject initialize(IRubyObject recv, IRubyObject io) {
try {
if (io instanceof RubyIO) {
RubyIO rubyIO = (RubyIO)io;
OpenFile of = rubyIO.getOpenFile();
Stream stream = of.getMainStreamSafe();
if (stream instanceof ChannelStream) {
ChannelStream cStream = (ChannelStream)stream;
if (cStream.getDescriptor().getChannel() instanceof SelectableChannel) {
SelectableChannel selChannel = (SelectableChannel)cStream.getDescriptor().getChannel();
((RubyObject)recv).extend(
new IRubyObject[]{((RubyModule)recv.getRuntime().getModule("Net").getConstant("BufferedIO")).getConstant("NativeImplementation")});
SelectableChannel sc = (SelectableChannel)(selChannel);
recv.dataWrapStruct(new NativeImpl(sc));
}
}
}
recv.getInstanceVariables().setInstanceVariable("@io", io);
recv.getInstanceVariables().setInstanceVariable("@read_timeout", recv.getRuntime().newFixnum(60));
recv.getInstanceVariables().setInstanceVariable("@debug_output", recv.getRuntime().getNil());
recv.getInstanceVariables().setInstanceVariable("@rbuf", RubyString.newEmptyString(recv.getRuntime()));
return recv;
} catch (BadDescriptorException e) {
throw recv.getRuntime().newErrnoEBADFError();
}
}
@JRubyModule(name="Net::BufferedIO::NativeImplementation")
public static class NativeImpl {
private SelectableChannel channel;
public NativeImpl(SelectableChannel channel) {
this.channel = channel;
}
@JRubyMethod
public static IRubyObject rbuf_fill(IRubyObject recv) {
RubyString buf = (RubyString)recv.getInstanceVariables().getInstanceVariable("@rbuf");
RubyIO io = (RubyIO)recv.getInstanceVariables().getInstanceVariable("@io");
int timeout = RubyNumeric.fix2int(recv.getInstanceVariables().getInstanceVariable("@read_timeout")) * 1000;
NativeImpl nim = (NativeImpl)recv.dataGetStruct();
Selector selector = null;
synchronized (nim.channel.blockingLock()) {
boolean oldBlocking = nim.channel.isBlocking();
try {
selector = SelectorFactory.openWithRetryFrom(recv.getRuntime(), SelectorProvider.provider());
nim.channel.configureBlocking(false);
SelectionKey key = nim.channel.register(selector, SelectionKey.OP_READ);
int n = selector.select(timeout);
if(n > 0) {
IRubyObject readItems = io.read(new IRubyObject[]{recv.getRuntime().newFixnum(1024*16)});
return buf.concat(readItems);
} else {
RubyClass exc = (RubyClass)(recv.getRuntime().getModule("Timeout").getConstant("Error"));
throw new RaiseException(RubyException.newException(recv.getRuntime(), exc, "execution expired"),false);
}
} catch(IOException exception) {
throw recv.getRuntime().newIOErrorFromException(exception);
} finally {
if (selector != null) {
try {
selector.close();
} catch (Exception e) {
}
}
try {nim.channel.configureBlocking(oldBlocking);} catch (IOException ioe) {}
}
}
}
}
}// NetProtocolBufferedIO