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/*
* 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.
*/
/* $Rev$ $Date$ */
// some strangeness in the build that causes
// WinSock.h and WinSock2.h to be included leading to redefinitions
#define _WINSOCKAPI_
#include "tuscany/sca/php/PHPServiceWrapper.h"
#include "osoa/sca/ServiceRuntimeException.h"
#include "tuscany/sca/util/Logging.h"
#include "tuscany/sca/util/Utils.h"
#include "tuscany/sca/model/Component.h"
#include "tuscany/sca/model/Composite.h"
#include "tuscany/sca/model/ServiceType.h"
#include "tuscany/sca/model/Interface.h"
#include "tuscany/sca/core/SCARuntime.h"
#include "tuscany/sca/php/model/PHPImplementation.h"
#include <php_embed.h>
using namespace osoa::sca;
namespace tuscany
{
namespace sca
{
namespace php
{
// a global!! place to put the response
// as I can't get the PHP return value
// processing to work. Need to be
// removed when the proper PHP SAPI is used
// The variable is only valid between the PHP engine call and
// the results processing. It stores the last thing that
// the script echoed
string scriptResponse;
// Global callbacks used by the PHP engine
// Callback for log messages
void php_log_message(char *message)
{
LOGINFO_1(5, "PHP Log (%s)", message);
}
// Callback for unbuffered writes (echo, print etc.)
int php_ub_write(const char *str, unsigned int str_length TSRMLS_DC)
{
LOGINFO_1(5, "PHP Write (%s)", str);
scriptResponse = str;
return str_length;
}
// Callback for errors
void php_error_cb(int type,
const char *error_filename,
const uint error_lineno,
const char *format, va_list args)
{
char buffer[2048];
int len;
len = snprintf(buffer, 2048, "Error on line %d: ", error_lineno);
vsnprintf(buffer + len, (2048 - len), format, args);
LOGINFO_1(5, "PHP Unformatted Error (%s)", buffer);
zend_bailout();
}
// Callback for flush (could be used to do something with the scriptResponse)
void php_flush(void *server_context)
{
LOGINFO(5, "Flush");
}
// ===========
// Constructor
// ===========
PHPServiceWrapper::PHPServiceWrapper(Service* service)
: ServiceWrapper(service)
{
LOGENTRY(1,"PHPServiceWrapper::constructor");
component = service->getComponent();
interf = service->getType()->getInterface();
remotable = interf->isRemotable();
// -----------------------------------------------
// Get the implementation for the target component
// -----------------------------------------------
PHPImplementation* impl = (PHPImplementation*)component->getType();
if (!impl)
{
string msg = "Component " + component->getName() + " has no implementation defined";
throw ServiceNotFoundException(msg.c_str());
}
LOGINFO_1(3,"PHPServiceWrapper::getServiceWrapper module %s", impl->getModule().c_str());
LOGINFO_1(3,"PHPServiceWrapper::getServiceWrapper class %s", impl->getClass().c_str());
LOGEXIT(1,"PHPServiceWrapper::constructor");
}
// ==========
// Destructor
// ==========
PHPServiceWrapper::~PHPServiceWrapper()
{
LOGENTRY(1,"PHPServiceWrapper::destructor");
LOGEXIT(1,"PHPServiceWrapper::destructor");
}
// ======================================================================
// invoke: wrapper call to service with setting the component context
// ======================================================================
void PHPServiceWrapper::invoke(Operation& operation)
{
LOGENTRY(1,"PHPServiceWrapper::invoke");
SCARuntime* runtime = SCARuntime::getInstance();
runtime->setCurrentComponent(component);
try
{
LOGINFO_1(4, "PHPServiceWrapper::invoke called with operation name: %s", operation.getName().c_str());
// create a temporary script which
// - includes the named script
// - creates a class instance if required
// - calls the named method with the provided arguments
// get the component type information
PHPImplementation* impl = (PHPImplementation*)component->getType();
// first create the temporay script and include the module
string script = "include '" + impl->getModule() + ".php';";
// if we have a class create an instance
string className = impl->getClass();
if( &className != NULL && className.size() > 0)
{
script += "$anobject = new " + className + "();";
}
// construct the call to the function
script += "$response = ";
if( &className != NULL && className.size() > 0)
{
script += " $anobject->";
}
script += operation.getName().c_str();
script += "(";
char tempString [32];
// add the parameters to the call
for(unsigned int i = 0; i < operation.getNParms(); i++)
{
const Operation::Parameter& parm = operation.getParameter(i);
switch(parm.getType())
{
case Operation::BOOL:
{
if( *(bool*)parm.getValue())
{
//boolean true
script += "true";
}
else
{
script += "false";
}
break;
}
case Operation::SHORT:
{
sprintf ( tempString, "%d", *(short*)parm.getValue() );
script += tempString;
break;
}
case Operation::USHORT:
{
sprintf ( tempString, "%d", *(unsigned short*)parm.getValue() );
script += tempString;
break;
}
case Operation::LONG:
{
sprintf ( tempString, "%d", *(long*)parm.getValue() );
script += tempString;
break;
}
case Operation::ULONG:
{
sprintf ( tempString, "%d", *(unsigned long*)parm.getValue() );
script += tempString;
break;
}
case Operation::FLOAT:
{
sprintf ( tempString, "%g", *(float*)parm.getValue() );
script += tempString;
break;
}
case Operation::DOUBLE:
{
sprintf ( tempString, "%g", *(double*)parm.getValue() );
script += tempString;
break;
}
case Operation::LONGDOUBLE:
{
sprintf ( tempString, "%g", *(long double*)parm.getValue() );
script += tempString;
break;
}
case Operation::CHARS:
{
script += *(char**)parm.getValue();
break;
}
case Operation::STRING:
{
script += (*(string*)parm.getValue()).c_str();
break;
}
default:
{
throw new ComponentInvocationException("Operation parameter type not supported");
}
}
if ( ( i + 1 ) < operation.getNParms() )
{
script += ", ";
}
}
// the closing bracket of the call
script += ");echo $response;return $response;";
// we now have the temporary script to make the call
LOGINFO_1(5, "Executing PHP script \n%s", script.c_str());
// load the PHP logging and error callback methods
php_embed_module.log_message = php_log_message;
php_embed_module.ub_write = php_ub_write;
php_embed_module.flush = php_flush;
//PHP_EMBED_START_BLOCK(/* argc */ 0, /* argv */ NULL)
void ***tsrm_ls;
int status = php_embed_init(0, NULL PTSRMLS_CC);
LOGINFO_1(5, "Engine startup status %d", status);
zend_first_try {
// set error handler
zend_error_cb = php_error_cb;
// call the dynamically created script
//zval retval;
zend_eval_string((char *) script.c_str(),
NULL,//&retval,
"PHP Component" TSRMLS_CC);
// get the response
// This doesn't want to work for some reason
// so have chaced the last echo that the script
// returns in the global scriptResponse variable
// This is a bit of a rubbish way of doing things so
// needs replacing when proper SAPI is used
//convert_to_string(&retval);
//LOGINFO_1(5, "Script returned %s", Z_STRVAL(retval));
//zval_dtor(&retval);
//PHP_EMBED_END_BLOCK()
} zend_catch {
int exit_status = EG(exit_status);
LOGINFO_1(5, "In catch %d", exit_status);
} zend_end_try();
//clean up
php_embed_shutdown(TSRMLS_C);
LOGINFO(5, "Engine shutdown");
// get the response values
LOGINFO_1(5, "Script returned %s", scriptResponse.c_str());
switch(operation.getReturnType())
{
case Operation::BOOL:
{
if(scriptResponse == "true")
{
*(bool*)operation.getReturnValue() = true;
}
break;
}
case Operation::SHORT:
{
*(short*)operation.getReturnValue() = (short) strtol(scriptResponse.c_str(), NULL,10);
break;
}
case Operation::LONG:
{
*(long*)operation.getReturnValue() = (long) strtol(scriptResponse.c_str(), NULL,10);
break;
}
case Operation::USHORT:
{
*(unsigned short*)operation.getReturnValue() = (unsigned short) strtoul(scriptResponse.c_str(), NULL,10);
break;
}
case Operation::ULONG:
{
*(unsigned long*)operation.getReturnValue() = (unsigned long) strtoul(scriptResponse.c_str(), NULL,10);
break;
}
case Operation::FLOAT:
{
*(float*)operation.getReturnValue() = (float) strtod(scriptResponse.c_str(), NULL);
break;
}
case Operation::DOUBLE:
{
*(double*)operation.getReturnValue() = (double) strtod(scriptResponse.c_str(), NULL);
break;
}
case Operation::LONGDOUBLE:
{
*(long double*)operation.getReturnValue() = (long double) strtod(scriptResponse.c_str(), NULL);
break;
}
case Operation::CHARS:
{
*(char**)operation.getReturnValue() = (char *)scriptResponse.c_str();
break;
}
case Operation::STRING:
{
*(string*)operation.getReturnValue() = scriptResponse;
break;
}
default:;
}
}
catch (...)
{
runtime->unsetCurrentComponent();
throw;
}
runtime->unsetCurrentComponent();
LOGEXIT(1,"PHPServiceWrapper::invoke");
}
// ======================================================================
// getServiceWrapper: create a wrapper for the target ComponentService
// ======================================================================
PHPServiceWrapper* PHPServiceWrapper::getServiceWrapper(Service* service)
{
LOGENTRY(1,"PHPServiceWrapper::getServiceWrapper");
PHPServiceWrapper* serviceWrapper = 0;
// ---------------------------------
// Create an instance of the wrapper
// ---------------------------------
serviceWrapper = new PHPServiceWrapper(service);
if (!serviceWrapper)
{
string msg = "Could not create new PHPServiceWrapper";
LOGERROR(1, msg.c_str());
throw ServiceNotFoundException(msg.c_str());
}
LOGEXIT(1,"PHPServiceWrapper::getServiceWrapper");
return serviceWrapper;
}
} // End namespace php
} // End namespace sca
} // End namespace tuscany
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