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org.apache.openejb.client.EJBRequest Maven / Gradle / Ivy
/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (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.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.openejb.client;
import org.apache.openejb.client.serializer.EJBDSerializer;
import org.apache.openejb.client.serializer.SerializationWrapper;
import org.omg.CORBA.ORB;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.rmi.CORBA.Stub;
import javax.rmi.CORBA.Tie;
import javax.rmi.PortableRemoteObject;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import java.lang.reflect.Method;
import java.rmi.Remote;
import java.util.Arrays;
public class EJBRequest implements ClusterableRequest {
private static final long serialVersionUID = -2075915633178128028L;
private transient RequestMethodCode requestMethod;
private transient int deploymentCode = 0;
private transient Object clientIdentity;
private transient String deploymentId;
private transient int serverHash;
private transient Body body;
private transient EJBDSerializer serializer;
private transient ProtocolMetaData metaData;
// Only visible on the client side
private transient final EJBMetaDataImpl ejbMetaData;
public static final int SESSION_BEAN_STATELESS = 6;
public static final int SESSION_BEAN_STATEFUL = 7;
public static final int ENTITY_BM_PERSISTENCE = 8;
public static final int ENTITY_CM_PERSISTENCE = 9;
public EJBRequest() {
body = new Body(null);
ejbMetaData = null;
}
public EJBRequest(final RequestMethodCode requestMethod,
final EJBMetaDataImpl ejb,
final Method method,
final Object[] args,
final Object primaryKey,
final EJBDSerializer serializer) {
this.body = new Body(ejb);
this.serializer = serializer;
this.ejbMetaData = ejb;
this.requestMethod = requestMethod;
setDeploymentCode(ejb.deploymentCode);
setDeploymentId(ejb.deploymentID);
setMethodInstance(method);
setMethodParameters(args);
setPrimaryKey(primaryKey);
}
@Override
public void setMetaData(final ProtocolMetaData metaData) {
this.metaData = metaData;
this.body.setMetaData(this.metaData);
}
public EJBMetaDataImpl getEjbMetaData() {
return ejbMetaData;
}
public Class getInterfaceClass() {
return body.getInterfaceClass();
}
public Method getMethodInstance() {
return body.getMethodInstance();
}
public String getMethodName() {
return body.getMethodName();
}
public Object[] getMethodParameters() {
final Object[] params = body.getMethodParameters();
if (params == null || serializer == null) {
return params;
}
final Object[] unserialized = new Object[params.length];
int i = 0;
for (final Object o : params) {
if (SerializationWrapper.class.isInstance(o)) {
final SerializationWrapper wrapper = SerializationWrapper.class.cast(o);
try {
unserialized[i] = serializer.deserialize(wrapper.getData(), body.getMethodInstance().getDeclaringClass().getClassLoader().loadClass(wrapper.getClassname()));
} catch (final ClassNotFoundException e) {
throw new RuntimeException(e);
}
} else {
unserialized[i] = o;
}
i++;
}
return unserialized;
}
public Class[] getMethodParamTypes() {
return body.getMethodParamTypes();
}
public Object getPrimaryKey() {
return body.getPrimaryKey();
}
public void setMethodInstance(final Method methodInstance) {
body.setMethodInstance(methodInstance);
}
public void setMethodParameters(final Object[] methodParameters) {
if (serializer == null || methodParameters == null) {
body.setMethodParameters(methodParameters);
} else {
final Object[] params = new Object[methodParameters.length];
int i = 0;
for (final Object o : methodParameters) {
if (o == null) {
params[i] = null;
} else {
params[i] = new SerializationWrapper(serializer.serialize(o), o.getClass().getName());
}
i++;
}
body.setMethodParameters(params);
}
}
public void setPrimaryKey(final Object primaryKey) {
body.setPrimaryKey(primaryKey);
}
public Body getBody() {
return body;
}
public void setBody(final Body body) {
this.body = body;
}
public byte getVersion() {
return this.body.getVersion();
}
public void setSerializer(final EJBDSerializer serializer) {
this.serializer = serializer;
}
@Override
public RequestType getRequestType() {
return RequestType.EJB_REQUEST;
}
public RequestMethodCode getRequestMethod() {
return requestMethod;
}
public Object getClientIdentity() {
return clientIdentity;
}
public String getDeploymentId() {
return deploymentId;
}
public int getDeploymentCode() {
return deploymentCode;
}
public void setRequestMethod(final RequestMethodCode requestMethod) {
this.requestMethod = requestMethod;
}
public void setClientIdentity(final Object clientIdentity) {
this.clientIdentity = clientIdentity;
}
public void setDeploymentId(final String deploymentId) {
this.deploymentId = deploymentId;
}
public void setDeploymentCode(final int deploymentCode) {
this.deploymentCode = deploymentCode;
}
@Override
public void setServerHash(final int serverHash) {
this.serverHash = serverHash;
}
@Override
public int getServerHash() {
return serverHash;
}
@Override
public String toString() {
final StringBuilder sb = new StringBuilder();
sb.append("EJBRequest{");
sb.append("deploymentId='");
sb.append(deploymentId);
sb.append("'");
if (requestMethod != null) {
sb.append(", type=").append(requestMethod);
}
if (body != null) {
sb.append(", ").append(body.toString());
}
sb.append("}");
return sb.toString();
}
/**
* Changes to this method must observe the optional {@link #metaData} version
*
* When the Request externalizes itself, it will reset
* the appropriate values so that this instance can be used again.
*
* There will be one request instance for each handler
*/
@Override
public void readExternal(final ObjectInput in) throws IOException, ClassNotFoundException {
ClassNotFoundException ex = null;
deploymentId = null;
deploymentCode = -1;
clientIdentity = null;
final int code = in.readByte();
try {
requestMethod = RequestMethodCode.valueOf(code);
} catch (IllegalArgumentException iae) {
throw new IOException("Invalid request code " + code);
}
try {
deploymentId = (String) in.readObject();
} catch (ClassNotFoundException cnfe) {
ex = cnfe;
}
deploymentCode = in.readShort();
try {
clientIdentity = in.readObject();
} catch (ClassNotFoundException cnfe) {
if (ex == null) {
ex = cnfe;
}
}
serverHash = in.readInt();
if (ex != null) {
throw ex;
}
}
/**
* Write to server.
* WARNING: To maintain backwards compatibility never change the order or insert new writes, always append to
* {@link org.apache.openejb.client.EJBRequest.Body#writeExternal(java.io.ObjectOutput)}
*
* @param out ObjectOutput
* @throws IOException
*/
@Override
public void writeExternal(final ObjectOutput out) throws IOException {
out.writeByte(requestMethod.getCode());
if (deploymentCode > 0) {
out.writeObject(null);
} else {
out.writeObject(deploymentId);
}
out.writeShort(deploymentCode);
out.writeObject(clientIdentity);
out.writeInt(serverHash);
out.flush();
body.setMetaData(metaData);
body.writeExternal(out);
}
public static class Body implements java.io.Externalizable {
private static final long serialVersionUID = -5364100745236348268L;
private transient volatile String toString = null;
private transient EJBMetaDataImpl ejb;
private transient ORB orb;
private transient Method methodInstance;
private transient Class interfaceClass;
private transient String methodName;
private transient Class[] methodParamTypes;
private transient Object[] methodParameters;
private transient Object primaryKey;
private transient String requestId;
private byte version = EJBResponse.VERSION;
private transient JNDIContext.AuthenticationInfo authentication;
private transient ProtocolMetaData metaData;
public Body(final EJBMetaDataImpl ejb) {
this.ejb = ejb;
}
public Body() {
}
public void setMetaData(final ProtocolMetaData metaData) {
this.metaData = metaData;
}
public byte getVersion() {
return version;
}
public void setAuthentication(final JNDIContext.AuthenticationInfo authentication) {
this.authentication = authentication;
}
public JNDIContext.AuthenticationInfo getAuthentication() {
return authentication;
}
public Method getMethodInstance() {
return methodInstance;
}
public Object[] getMethodParameters() {
return methodParameters;
}
public Object getPrimaryKey() {
return primaryKey;
}
public Class getInterfaceClass() {
return interfaceClass;
}
public String getMethodName() {
return methodName;
}
public Class[] getMethodParamTypes() {
return methodParamTypes;
}
@SuppressWarnings("unchecked")
public void setMethodInstance(final Method methodInstance) {
if (methodInstance == null) {
throw new NullPointerException("methodInstance input parameter is null");
}
this.methodInstance = methodInstance;
this.methodName = methodInstance.getName();
this.methodParamTypes = methodInstance.getParameterTypes();
final Class methodClass = methodInstance.getDeclaringClass();
if (ejb.homeClass != null) {
if (methodClass.isAssignableFrom(ejb.homeClass)) {
this.interfaceClass = ejb.homeClass;
return;
}
}
if (ejb.remoteClass != null) {
if (methodClass.isAssignableFrom(ejb.remoteClass)) {
this.interfaceClass = ejb.remoteClass;
return;
}
}
for (final Class businessClass : ejb.businessClasses) {
if (methodClass.isAssignableFrom(businessClass)) {
this.interfaceClass = businessClass;
return;
}
}
}
public void setMethodParameters(final Object[] methodParameters) {
this.methodParameters = methodParameters;
}
public void setPrimaryKey(final Object primaryKey) {
this.primaryKey = primaryKey;
}
public String getRequestId() {
return requestId;
}
public void setRequestId(final String requestId) {
this.requestId = requestId;
}
/**
* Changes to this method must observe the optional {@link #metaData} version
*/
@SuppressWarnings("unchecked")
@Override
public void readExternal(final ObjectInput in) throws IOException, ClassNotFoundException {
this.version = in.readByte();
requestId = null;
ClassNotFoundException result = null;
primaryKey = null;
methodName = null;
methodInstance = null;
try {
requestId = (String) in.readObject();
primaryKey = in.readObject();
interfaceClass = (Class) in.readObject();
} catch (ClassNotFoundException cnfe) {
result = cnfe;
}
methodName = in.readUTF();
try {
readMethodParameters(in);
} catch (ClassNotFoundException cnfe) {
if (result == null) {
result = cnfe;
}
}
if (interfaceClass != null) {
try {
//noinspection unchecked
methodInstance = interfaceClass.getMethod(methodName, methodParamTypes);
} catch (NoSuchMethodException nsme) {
if (result == null) {
throw new ClassNotFoundException(interfaceClass.getSimpleName() + "#" + methodName + " is not valid");
}
}
}
if (null == metaData || metaData.isAtLeast(4, 6)) {
authentication = JNDIContext.AuthenticationInfo.class.cast(in.readObject());
} else {
authentication = null;
}
if (result != null) {
throw result;
}
}
/**
* Changes to this method must observe the optional {@link #metaData} version
*/
@Override
public void writeExternal(final ObjectOutput out) throws IOException {
out.writeByte(this.version);
out.writeObject(requestId);
out.writeObject(primaryKey);
out.writeObject(interfaceClass);
out.writeUTF(methodName);
writeMethodParameters(out, methodParamTypes, methodParameters);
if (null == metaData || metaData.isAtLeast(4, 6)) {
out.writeObject(authentication);
}
out.flush();
}
/**
* Changes to this method must observe the optional {@link #metaData} version
*/
protected void writeMethodParameters(final ObjectOutput out, final Class[] types, final Object[] args) throws IOException {
out.writeByte(types.length);
for (int i = 0; i < types.length; i++) {
final Class clazz = types[i];
Object obj = args[i];
if (clazz.isPrimitive()) {
if (clazz == Byte.TYPE) {
out.write(BYTE);
final byte bytevalue = (Byte) obj;
out.writeByte(bytevalue);
} else if (clazz == Character.TYPE) {
out.write(CHAR);
final char charvalue = (Character) obj;
out.writeChar(charvalue);
} else if (clazz == Integer.TYPE) {
out.write(INT);
final int intvalue = (Integer) obj;
out.writeInt(intvalue);
} else if (clazz == Boolean.TYPE) {
out.write(BOOLEAN);
final boolean booleanvalue = (Boolean) obj;
out.writeBoolean(booleanvalue);
} else if (clazz == Long.TYPE) {
out.write(LONG);
final long longvalue = (Long) obj;
out.writeLong(longvalue);
} else if (clazz == Float.TYPE) {
out.write(FLOAT);
final float fvalue = (Float) obj;
out.writeFloat(fvalue);
} else if (clazz == Double.TYPE) {
out.write(DOUBLE);
final double dvalue = (Double) obj;
out.writeDouble(dvalue);
} else if (clazz == Short.TYPE) {
out.write(SHORT);
final short shortvalue = (Short) obj;
out.writeShort(shortvalue);
} else {
throw new IOException("Unkown primitive type: " + clazz);
}
} else {
if (obj instanceof PortableRemoteObject && obj instanceof Remote) {
final Tie tie = javax.rmi.CORBA.Util.getTie((Remote) obj);
if (tie == null) {
throw new IOException("Unable to serialize PortableRemoteObject; object has not been exported: " + obj);
}
final ORB orb = getORB();
tie.orb(orb);
obj = PortableRemoteObject.toStub((Remote) obj);
}
out.write(OBJECT);
out.writeObject(clazz);
out.writeObject(obj);
}
}
}
static final Class[] noArgsC = new Class[0];
static final Object[] noArgsO = new Object[0];
/**
* Obtain an ORB instance for this request to activate remote
* arguments and return results.
*
* @return An ORB instance.
* @throws java.io.IOException On error
*/
protected ORB getORB() throws IOException {
// first ORB request? Check our various sources
if (orb == null) {
try {
final Context initialContext = new InitialContext();
orb = (ORB) initialContext.lookup("java:comp/ORB");
} catch (Throwable e) {
try {
// any orb will do if we can't get a context one.
orb = ORB.init();
} catch (Throwable ex) {
throw new IOException("Unable to connect PortableRemoteObject stub to an ORB, no ORB bound to java:comp/ORB");
}
}
}
return orb;
}
/**
* Changes to this method must observe the optional {@link #metaData} version
*/
protected void readMethodParameters(final ObjectInput in) throws IOException, ClassNotFoundException {
final int length = in.read();
if (length < 1) {
methodParamTypes = noArgsC;
methodParameters = noArgsO;
return;
}
final Class[] types = new Class[length];
final Object[] args = new Object[length];
for (int i = 0; i < types.length; i++) {
final Class clazz;
final Object obj;
final int type = in.read();
switch (type) {
case BYTE:
clazz = Byte.TYPE;
obj = in.readByte();
break;
case CHAR:
clazz = Character.TYPE;
obj = in.readChar();
break;
case INT:
clazz = Integer.TYPE;
obj = in.readInt();
break;
case BOOLEAN:
clazz = Boolean.TYPE;
obj = in.readBoolean();
break;
case LONG:
clazz = Long.TYPE;
obj = in.readLong();
break;
case FLOAT:
clazz = Float.TYPE;
obj = in.readFloat();
break;
case DOUBLE:
clazz = Double.TYPE;
obj = in.readDouble();
break;
case SHORT:
clazz = Short.TYPE;
obj = in.readShort();
break;
case OBJECT:
clazz = (Class) in.readObject();
obj = in.readObject();
if (obj instanceof Stub) {
final Stub stub = (Stub) obj;
final ORB orb = getORB();
stub.connect(orb);
}
break;
default:
throw new IOException("Unkown data type: " + type);
}
types[i] = clazz;
args[i] = obj;
}
methodParamTypes = types;
methodParameters = args;
}
private static final int INT = 0;
private static final int BYTE = 1;
private static final int LONG = 2;
private static final int FLOAT = 3;
private static final int DOUBLE = 4;
private static final int SHORT = 5;
private static final int CHAR = 6;
private static final int BOOLEAN = 7;
private static final int OBJECT = 8;
@Override
public String toString() {
if (null == toString) {
toString = "Body{" +
"ejb=" + ejb +
", orb=" + orb +
", methodInstance=" + methodInstance +
", interfaceClass=" + interfaceClass +
", methodName='" + methodName + '\'' +
", methodParamTypes=" + (methodParamTypes == null ? null : Arrays.asList(methodParamTypes)) +
", methodParameters=" + (methodParameters == null ? null : Arrays.asList(methodParameters)) +
", primaryKey=" + primaryKey +
", requestId='" + requestId + '\'' +
", version=" + version +
'}';
}
return toString;
}
}
}
