diff options
Diffstat (limited to 'sandbox/event/modules/implementation-script/src/main/java/org/apache/tuscany/sca/implementation/script/engines/TuscanyJRubyScriptEngine.java')
| -rw-r--r-- | sandbox/event/modules/implementation-script/src/main/java/org/apache/tuscany/sca/implementation/script/engines/TuscanyJRubyScriptEngine.java | 697 |
1 files changed, 0 insertions, 697 deletions
diff --git a/sandbox/event/modules/implementation-script/src/main/java/org/apache/tuscany/sca/implementation/script/engines/TuscanyJRubyScriptEngine.java b/sandbox/event/modules/implementation-script/src/main/java/org/apache/tuscany/sca/implementation/script/engines/TuscanyJRubyScriptEngine.java deleted file mode 100644 index 324246c32b..0000000000 --- a/sandbox/event/modules/implementation-script/src/main/java/org/apache/tuscany/sca/implementation/script/engines/TuscanyJRubyScriptEngine.java +++ /dev/null @@ -1,697 +0,0 @@ -/*
-* Copyright (c) 2006, Sun Microsystems, Inc.
-* All rights reserved.
-*
-* Redistribution and use in source and binary forms, with or without
-* modification, are permitted provided that the following conditions are met:
-*
-* - Redistributions of source code must retain the above copyright notice, this
-* list of conditions and the following disclaimer.
-*
-* - Redistributions in binary form must reproduce the above copyright notice,
-* this list of conditions and the following disclaimer in the documentation
-* and/or other materials provided with the distribution.
-*
-* - Neither the name of the Sun Microsystems, Inc. nor the names of
-* contributors may be used to endorse or promote products derived from this
-* software without specific prior written permission.
-*
-* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
-* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
-* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
-* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
-* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY
-* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
-* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
-* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
-* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
-* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
-* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
-* DAMAGE.
-*/
-package org.apache.tuscany.sca.implementation.script.engines;
-
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.FileNotFoundException;
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
-import java.io.PrintStream;
-import java.io.Reader;
-import java.io.StringWriter;
-import java.io.UnsupportedEncodingException;
-import java.io.Writer;
-import java.lang.reflect.InvocationHandler;
-import java.lang.reflect.Method;
-import java.lang.reflect.Proxy;
-import java.nio.ByteBuffer;
-import java.nio.CharBuffer;
-import java.nio.charset.Charset;
-import java.nio.charset.CharsetDecoder;
-import java.nio.charset.CoderResult;
-import java.nio.charset.CodingErrorAction;
-import java.security.AccessController;
-import java.security.PrivilegedAction;
-import java.util.Arrays;
-import java.util.Collections;
-import java.util.HashSet;
-import java.util.Iterator;
-import java.util.List;
-import java.util.Set;
-
-import javax.script.AbstractScriptEngine;
-import javax.script.Bindings;
-import javax.script.Compilable;
-import javax.script.CompiledScript;
-import javax.script.Invocable;
-import javax.script.ScriptContext;
-import javax.script.ScriptEngine;
-import javax.script.ScriptEngineFactory;
-import javax.script.ScriptException;
-import javax.script.SimpleBindings;
-
-import org.jruby.Ruby;
-import org.jruby.RubyException;
-import org.jruby.RubyIO;
-import org.jruby.RubyObject;
-import org.jruby.ast.Node;
-import org.jruby.exceptions.RaiseException;
-import org.jruby.internal.runtime.GlobalVariable;
-import org.jruby.internal.runtime.GlobalVariables;
-import org.jruby.internal.runtime.ReadonlyAccessor;
-import org.jruby.internal.runtime.ValueAccessor;
-import org.jruby.javasupport.Java;
-import org.jruby.javasupport.JavaEmbedUtils;
-import org.jruby.javasupport.JavaObject;
-import org.jruby.javasupport.JavaUtil;
-import org.jruby.runtime.Block;
-import org.jruby.runtime.IAccessor;
-import org.jruby.runtime.builtin.IRubyObject;
-import org.jruby.util.KCode;
-
-import com.sun.script.jruby.JRubyScriptEngineFactory;
-
-/**
- * This class is a copy of the class com.sun.script.ruby.JRubyScriptEngine with some minor modifications
- * to work around problems with Tuscany setting SCA properties and references as global variable in JRuby
- * Should only need it temporarily till a new BSF release fixes it.
- *
- * @version $Rev$ $Date$
- */
-@SuppressWarnings("unchecked")
-public class TuscanyJRubyScriptEngine extends AbstractScriptEngine
- implements Compilable, Invocable {
-
- // my factory, may be null
- private ScriptEngineFactory factory;
- private Ruby runtime;
-
- public TuscanyJRubyScriptEngine() {
- // Allow privileged access to ready properties. Requires PropertyPermission in security
- // policy.
- String rubyPath = AccessController.doPrivileged(new PrivilegedAction<String>() {
- public String run() {
- return System.getProperty("com.sun.script.jruby.loadpath");
- }
- });
- init(rubyPath);
- }
-
- public TuscanyJRubyScriptEngine(String loadPath) {
- init(loadPath);
- }
-
- // my implementation for CompiledScript
- private class JRubyCompiledScript extends CompiledScript {
- // my compiled code
- private Node node;
-
- JRubyCompiledScript (Node node) {
- this.node = node;
- }
-
- public ScriptEngine getEngine() {
- return TuscanyJRubyScriptEngine.this;
- }
-
- public Object eval(ScriptContext ctx) throws ScriptException {
- return evalNode(node, ctx);
- }
- }
-
- // Compilable methods
- public CompiledScript compile(String script)
- throws ScriptException {
- Node node = compileScript(script, context);
- return new JRubyCompiledScript(node);
- }
-
- public CompiledScript compile (Reader reader)
- throws ScriptException {
- Node node = compileScript(reader, context);
- return new JRubyCompiledScript(node);
- }
-
- // Invocable methods
- public Object invokeFunction(String name, Object... args)
- throws ScriptException, NoSuchMethodException {
- return invokeImpl(null, name, args, Object.class);
- }
-
- public Object invokeMethod(Object obj, String name, Object... args)
- throws ScriptException, NoSuchMethodException {
- if (obj == null) {
- throw new IllegalArgumentException("script object is null");
- }
- return invokeImpl(obj, name, args, Object.class);
- }
-
- public Object getInterface(Object obj, Class clazz) {
- if (obj == null) {
- throw new IllegalArgumentException("script object is null");
- }
- return makeInterface(obj, clazz);
- }
-
- public Object getInterface(Class clazz) {
- return makeInterface(null, clazz);
- }
-
- private <T> T makeInterface(Object obj, Class<T> clazz) {
- if (clazz == null || !clazz.isInterface()) {
- throw new IllegalArgumentException("interface Class expected");
- }
- final Object thiz = obj;
- return (T) Proxy.newProxyInstance(
- clazz.getClassLoader(),
- new Class[] { clazz },
- new InvocationHandler() {
- public Object invoke(Object proxy, Method m, Object[] args)
- throws Throwable {
- return invokeImpl(thiz, m.getName(),
- args, m.getReturnType());
- }
- });
- }
-
- // ScriptEngine methods
- public synchronized Object eval(String str, ScriptContext ctx)
- throws ScriptException {
- Node node = compileScript(str, ctx);
- return evalNode(node, ctx);
- }
-
- public synchronized Object eval(Reader reader, ScriptContext ctx)
- throws ScriptException {
- Node node = compileScript(reader, ctx);
- return evalNode(node, ctx);
- }
-
- public ScriptEngineFactory getFactory() {
- synchronized (this) {
- if (factory == null) {
- factory = new JRubyScriptEngineFactory();
- }
- }
- return factory;
- }
-
- public Bindings createBindings() {
- return new SimpleBindings();
- }
-
- // package-private methods
- void setFactory(ScriptEngineFactory factory) {
- this.factory = factory;
- }
-
- // internals only below this point
-
- private Object rubyToJava(IRubyObject value) {
- return rubyToJava(value, Object.class);
- }
-
- private Object rubyToJava(IRubyObject value, Class type) {
- return JavaUtil.convertArgument(
- runtime,
- Java.ruby_to_java(value, value, Block.NULL_BLOCK),
- type);
- }
-
- private IRubyObject javaToRuby(Object value) {
- if (value instanceof IRubyObject) {
- return (IRubyObject) value;
- }
- IRubyObject result = JavaUtil.convertJavaToRuby(runtime, value);
- if (result instanceof JavaObject) {
- return runtime.getModule("JavaUtilities").callMethod(runtime.getCurrentContext(), "wrap", result);
- }
- return result;
- }
-
- private synchronized Node compileScript(String script, ScriptContext ctx)
- throws ScriptException {
- GlobalVariables oldGlobals = runtime.getGlobalVariables();
- try {
- setErrorWriter(ctx.getErrorWriter());
- setGlobalVariables(ctx);
- String filename = (String) ctx.getAttribute(ScriptEngine.FILENAME);
- if (filename == null) {
- filename = "<unknown>";
- }
- return runtime.parseEval(script, filename, null, 0);
- } catch (RaiseException e) {
- RubyException re = e.getException();
- runtime.printError(re);
- throw new ScriptException(e);
- } catch (Exception e) {
- throw new ScriptException(e);
- } finally {
- if (oldGlobals != null) {
- setGlobalVariables(oldGlobals);
- }
- }
- }
-
- private synchronized Node compileScript(Reader reader, ScriptContext ctx)
- throws ScriptException {
- GlobalVariables oldGlobals = runtime.getGlobalVariables();
- try {
- setErrorWriter(ctx.getErrorWriter());
- setGlobalVariables(ctx);
- String filename = (String) ctx.getAttribute(ScriptEngine.FILENAME);
- if (filename == null) {
- filename = "<unknown>";
- String script = getRubyScript(reader);
- return runtime.parseEval(script, filename, null, 0);
- }
- InputStream inputStream = getRubyReader(filename);
- return runtime.parseFile(inputStream, filename, null);
- } catch (RaiseException e) {
- RubyException re = e.getException();
- runtime.printError(re);
- throw new ScriptException(e);
- } catch (Exception exp) {
- throw new ScriptException(exp);
- } finally {
- if (oldGlobals != null) {
- setGlobalVariables(oldGlobals);
- }
- }
- }
-
- private String getRubyScript(Reader reader) throws IOException {
- StringBuffer sb = new StringBuffer();
- char[] cbuf;
- while (true) {
- cbuf = new char[8*1024];
- int chars = reader.read(cbuf, 0, cbuf.length);
- if (chars < 0) {
- break;
- }
- sb.append(cbuf, 0, chars);
- }
- cbuf = null;
- return (new String(sb)).trim();
- }
-
- private InputStream getRubyReader(String filename) throws FileNotFoundException {
- File file = new File(filename);
- return new FileInputStream(file);
- }
-
- private void setGlobalVariables(final ScriptContext ctx) {
- ctx.setAttribute("context", ctx, ScriptContext.ENGINE_SCOPE);
- setGlobalVariables(new GlobalVariables(runtime) {
- GlobalVariables parent = runtime.getGlobalVariables();
-
- @Override
- public void define(String name, IAccessor accessor) {
- assert name != null;
- assert accessor != null;
- assert name.startsWith("$");
- synchronized (ctx) {
- Bindings engineScope = ctx.getBindings(ScriptContext.ENGINE_SCOPE);
- engineScope.put(name, new GlobalVariable(accessor));
- }
- }
-
- @Override
- public void defineReadonly(String name, IAccessor accessor) {
- assert name != null;
- assert accessor != null;
- assert name.startsWith("$");
- synchronized (ctx) {
- Bindings engineScope = ctx.getBindings(ScriptContext.ENGINE_SCOPE);
- engineScope.put(name, new GlobalVariable(new
- ReadonlyAccessor(name, accessor)));
- }
- }
-
- @Override
- public boolean isDefined(String name) {
- assert name != null;
- assert name.startsWith("$");
- synchronized (ctx) {
- String modifiedName = name.substring(1);
- boolean defined = ctx.getAttributesScope(modifiedName) != -1;
- return defined ? true : parent.isDefined(name);
- }
- }
-
- @Override
- public void alias(String name, String oldName) {
- assert name != null;
- assert oldName != null;
- assert name.startsWith("$");
- assert oldName.startsWith("$");
-
- if (runtime.getSafeLevel() >= 4) {
- throw runtime.newSecurityError("Insecure: can't alias global variable");
- }
-
- synchronized (ctx) {
- int scope = ctx.getAttributesScope(name);
- if (scope == -1) {
- scope = ScriptContext.ENGINE_SCOPE;
- }
-
- IRubyObject value = get(oldName);
- ctx.setAttribute(name, rubyToJava(value), scope);
- }
- }
-
- @Override
- public IRubyObject get(String name) {
- assert name != null;
- assert name.startsWith("$");
-
- synchronized (ctx) {
- // skip '$' and try
- String modifiedName = name.substring(1);
- int scope = ctx.getAttributesScope(modifiedName);
- if (scope == -1) {
- return parent.get(name);
- }
-
- Object obj = ctx.getAttribute(modifiedName, scope);
- if (obj instanceof IAccessor) {
- return ((IAccessor)obj).getValue();
- } else {
- return javaToRuby(obj);
- }
- }
- }
-
- @Override
- public IRubyObject set(String name, IRubyObject value) {
- assert name != null;
- assert name.startsWith("$");
-
- if (runtime.getSafeLevel() >= 4) {
- throw runtime.newSecurityError("Insecure: can't change global variable value");
- }
-
- synchronized (ctx) {
- // skip '$' and try
- String modifiedName = name.substring(1);
- int scope = ctx.getAttributesScope(modifiedName);
- if (scope == -1) {
- scope = ScriptContext.ENGINE_SCOPE;
- }
- IRubyObject oldValue = get(name);
- Object obj = ctx.getAttribute(modifiedName, scope);
- if (obj instanceof IAccessor) {
- ((IAccessor)obj).setValue(value);
- } else {
- ctx.setAttribute(modifiedName, rubyToJava(value), scope);
- if ("KCODE".equals(modifiedName)) {
- setKCode((String)rubyToJava(value));
- } else if ("stdout".equals(modifiedName)) {
- equalOutputs((RubyObject)value);
- }
- }
- return oldValue;
- }
- }
-
- @Override
- public Set<String> getNames() {
- HashSet set = new HashSet();
- synchronized (ctx) {
- for (Object scope : ctx.getScopes()) {
- Bindings b = ctx.getBindings((Integer)scope);
- if (b != null) {
- for (Object key: b.keySet()) {
- set.add(key);
- }
- }
- }
- }
- for (Iterator<String> names = parent.getNames().iterator(); names.hasNext();) {
- set.add(names.next());
- }
- return Collections.unmodifiableSet(set);
- }
-
- @Override
- public IRubyObject getDefaultSeparator() {
- return parent.getDefaultSeparator();
- }
- });
- }
-
- private void setGlobalVariables(GlobalVariables globals) {
- runtime.setGlobalVariables(globals);
- }
-
- private synchronized Object evalNode(Node node, ScriptContext ctx)
- throws ScriptException {
- GlobalVariables oldGlobals = runtime.getGlobalVariables();
- try {
- setWriterOutputStream(ctx.getWriter());
- setErrorWriter(ctx.getErrorWriter());
- setGlobalVariables(ctx);
- return rubyToJava(runtime.runNormally(node, false));
- } catch (Exception exp) {
- throw new ScriptException(exp);
- } finally {
- try {
- JavaEmbedUtils.terminate(runtime);
- } catch (RaiseException e) {
- RubyException re = e.getException();
- runtime.printError(re);
- if (!runtime.fastGetClass("SystemExit").isInstance(re)) {
- throw new ScriptException(e);
- }
- } finally {
- if (oldGlobals != null) {
- setGlobalVariables(oldGlobals);
- }
- }
- }
- }
-
- private void init(final String loadPath) {
- AccessController.doPrivileged(new PrivilegedAction<Object>() {
- public Object run() {
- runtime = Ruby.newInstance();
- IAccessor d = new ValueAccessor(runtime.newString("<script>"));
- runtime.getGlobalVariables().define("$PROGRAM_NAME", d);
- runtime.getGlobalVariables().define("$0", d);
- String path = loadPath;
- if (path == null) {
- path = System.getProperty("java.class.path");
- }
- List list = Arrays.asList(path.split(File.pathSeparator));
- runtime.getLoadService().init(list);
- runtime.getLoadService().require("java");
- return null;
- }
- });
- }
-
- private synchronized Object invokeImpl(final Object obj, String method,
- Object[] args, Class returnType)
- throws ScriptException {
- if (method == null) {
- throw new NullPointerException("method name is null");
- }
- GlobalVariables oldGlobals = runtime.getGlobalVariables();
- try {
- setWriterOutputStream(context.getWriter());
- setErrorWriter(context.getErrorWriter());
- setGlobalVariables(context);
- IRubyObject rubyRecv = obj != null ?
- JavaUtil.convertJavaToRuby(runtime, obj) : runtime.getTopSelf();
-
- IRubyObject result;
- if (args != null && args.length > 0) {
- IRubyObject[] rubyArgs = JavaUtil.convertJavaArrayToRuby(runtime, args);
- // Create Ruby proxies for any input arguments that are not primitives.
- IRubyObject javaUtilities = runtime.getObject().getConstant("JavaUtilities");
- for (int i = 0; i < rubyArgs.length; i++) {
- IRubyObject tmp = rubyArgs[i];
- if (tmp instanceof JavaObject) {
- rubyArgs[i] = javaUtilities.callMethod(runtime.getCurrentContext(), "wrap", tmp);
- }
- }
- result = rubyRecv.callMethod(runtime.getCurrentContext(), method, rubyArgs);
- } else {
- result = rubyRecv.callMethod(runtime.getCurrentContext(), method);
- }
- return rubyToJava(result, returnType);
- } catch (Exception exp) {
- throw new ScriptException(exp);
- } finally {
- try {
- JavaEmbedUtils.terminate(runtime);
- } catch (RaiseException e) {
- RubyException re = e.getException();
- runtime.printError(re);
- if (!runtime.fastGetClass("SystemExit").isInstance(re)) {
- throw new ScriptException(e);
- }
- } finally {
- if (oldGlobals != null) {
- setGlobalVariables(oldGlobals);
- }
- }
- }
- }
-
- private void setKCode(String encoding) {
- KCode kcode = KCode.create(runtime, encoding);
- runtime.setKCode(kcode);
- }
-
- private void equalOutputs(RubyObject value) {
- runtime.getGlobalVariables().set("$>", value);
- runtime.getGlobalVariables().set("$defout", value);
- }
-
- private void setWriterOutputStream(Writer writer) {
- try {
- RubyIO dummy_io =
- new RubyIO(runtime, new PrintStream(new WriterOutputStream(new StringWriter())));
- runtime.getGlobalVariables().set("$stderr", dummy_io); //discard unwanted warnings
- RubyIO io =
- new RubyIO(runtime, new PrintStream(new WriterOutputStream(writer)));
- io.getOpenFile().getMainStream().setSync(true);
- runtime.defineGlobalConstant("STDOUT", io);
- runtime.getGlobalVariables().set("$>", io);
- runtime.getGlobalVariables().set("$stdout", io);
- runtime.getGlobalVariables().set("$defout", io);
- } catch (UnsupportedEncodingException exp) {
- throw new IllegalArgumentException(exp);
- }
- }
-
- private void setErrorWriter(Writer writer) {
- try {
- RubyIO dummy_io =
- new RubyIO(runtime, new PrintStream(new WriterOutputStream(new StringWriter())));
- runtime.getGlobalVariables().set("$stderr", dummy_io); //discard unwanted warnings
- RubyIO io =
- new RubyIO(runtime, new PrintStream(new WriterOutputStream(writer)));
- io.getOpenFile().getMainStream().setSync(true);
- runtime.defineGlobalConstant("STDERR", io);
- runtime.getGlobalVariables().set("$stderr", io);
- runtime.getGlobalVariables().set("$deferr", io);
- } catch (UnsupportedEncodingException exp) {
- throw new IllegalArgumentException(exp);
- }
- }
-
- private String getEncoding() {
- String enc = System.getProperty("sun.jnu.encoding");
- if (enc != null) {
- return enc;
- }
- return ((enc = System.getProperty("file.encoding")) == null) ? "UTF-8" : enc;
- }
-
- private class WriterOutputStream extends OutputStream {
-
- private Writer writer;
- private CharsetDecoder decoder;
-
- private WriterOutputStream(Writer writer) throws UnsupportedEncodingException {
- this(writer, getEncoding());
- }
-
- private WriterOutputStream(Writer writer, String enc) throws UnsupportedEncodingException {
- this.writer = writer;
- if (enc == null) {
- throw new UnsupportedEncodingException("encoding is " + enc);
- }
- try {
- decoder = Charset.forName(enc).newDecoder();
- } catch (Exception e) {
- throw new UnsupportedEncodingException("Unsupported: " + enc);
- }
- decoder.onMalformedInput(CodingErrorAction.REPLACE);
- decoder.onUnmappableCharacter(CodingErrorAction.REPLACE);
- }
-
- @Override
- public void close() throws IOException {
- synchronized(writer) {
- decoder = null;
- writer.close();
- }
- }
-
- @Override
- public void flush() throws IOException {
- synchronized(writer) {
- writer.flush();
- }
- }
-
- @Override
- public void write(int b) throws IOException {
- byte[] buffer = new byte[1];
- write(buffer, 0, 1);
- }
-
- @Override
- public void write(byte[] buffer) throws IOException {
- write(buffer, 0, buffer.length);
- }
-
- @Override
- public void write(byte[] buffer, int offset, int length) throws IOException {
- synchronized(writer) {
- if (offset < 0 || offset > buffer.length - length || length < 0) {
- throw new IndexOutOfBoundsException();
- }
- if (length == 0) {
- return;
- }
- ByteBuffer bytes = ByteBuffer.wrap(buffer, offset, length);
- CharBuffer chars = CharBuffer.allocate(length);
- convert(bytes, chars);
- char[] cbuf = new char[chars.length()];
- chars.get(cbuf, 0, chars.length());
- writer.write(cbuf);
- writer.flush();
- }
- }
-
- private void convert(ByteBuffer bytes, CharBuffer chars) throws IOException {
- decoder.reset();
- chars.clear();
- CoderResult result = decoder.decode(bytes, chars, true);
- if (result.isError() || result.isOverflow()) {
- throw new IOException(result.toString());
- } else if (result.isUnderflow()) {
- chars.flip();
- }
- }
- }
-}
|