Hi all,
I'm experiencing serious problems with the eager service initialization
features provided by the Service interface (the service is deployed in
application scope everything is correct in services.xml). I'm using the
latest nightly build.
1 - the 'init' method is called *only* if there's a static
initialization elsewhere (i.e. a static block) -- so I guess the init()
method is called *only* when the first request comes, and not at system
startup as described into the documentation (and a service instance is
created)
2 - the startUp() method is *never* called, even if the
<parameter name="load-on-startup" locked="false">true</parameter>
parameter is set into services.xml.
Furthermore, if you set this argument, *2* service instances are created
at system startup!. Again, if a static block is not present, nothing
happens.
Please find attached the simple service file (it's the sample service
slightly modified) together with the configuration file.
Thanks,
Michele
/*
* Copyright 2001-2004 The Apache Software Foundation.
*
* Licensed 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 userguide.example1;
import java.net.URL;
import org.apache.axiom.om.OMElement;
import org.apache.axis2.AxisFault;
import org.apache.axis2.context.ConfigurationContext;
import org.apache.axis2.context.MessageContext;
import org.apache.axis2.context.OperationContext;
import org.apache.axis2.context.ServiceContext;
import org.apache.axis2.description.AxisService;
import org.apache.axis2.engine.Service;
import org.apache.axis2.wsdl.WSDLConstants;
import org.apache.log4j.Logger;
import org.apache.log4j.PropertyConfigurator;
/**
* Created by IntelliJ IDEA.
* User: Jaliya
* Date: Jun 2, 2005
* Time: 2:17:58 PM
*/
public class MyService implements Service {
private static Logger log;
@SuppressWarnings("unused")
private MessageContext ctx;
private static int res;
/*
static {
log = Logger.getLogger(MyService.class);
ClassLoader cl = MyService.class.getClassLoader();
URL url = cl.getResource("/log4j.properties");
PropertyConfigurator.configure(url);
log.info("Static initialization");
}
*/
public MyService() {
log.warn("== Instance created ==");
}
public OMElement echo(OMElement element) {
//Praparing the OMElement so that it can be attached to another OM Tree.
//First the OMElement should be completely build in case it is not
fully built and still
//some of the xml is in the stream.
element.build();
//Secondly the OMElement should be detached from the current OMTree so
that it can be attached
//some other OM Tree. Once detached the OmTree will remove its
connections to this OMElement.
element.detach();
res++;
element.addAttribute("result", String.valueOf(res), null);
return element;
}
public void ping(OMElement element) {
buildElement(element);
//Do some processing
}
public void pingF(OMElement element) throws AxisFault{
buildElement(element);
throw new AxisFault("Fault being thrown");
}
private static void buildElement(OMElement element) {
element.build();
element.detach();
}
public void destroy(ServiceContext sc) {
log.warn("Service is going to be destroyed!!!");
}
public void init(ServiceContext sc) {/*
log = Logger.getLogger(MyService.class);
ClassLoader cl = MyService.class.getClassLoader();
URL url = cl.getResource("/log4j.properties");
PropertyConfigurator.configure(url);
res = 0;
*/
log.info("init ===");
}
public void setOperationContext(OperationContext operationContext) {
try {
this.ctx =
operationContext.getMessageContext(WSDLConstants.MESSAGE_LABEL_IN_VALUE);
} catch (AxisFault e) {
log.warn(e.getMessage());
}
}
public void startUp(ConfigurationContext configctx, AxisService service) {
log.info("Startup ====");
}
}
<service name="MyService" scope="application">
<description>
This is a sample Web Service with two operations,echo and ping.
</description>
<parameter name="ServiceClass" locked="false">userguide.example1.MyService</parameter>
<parameter name="load-on-startup" locked="false">true</parameter>
<operation name="echo">
<messageReceiver class="org.apache.axis2.receivers.RawXMLINOutMessageReceiver"/>
<actionMapping>urn:echo</actionMapping>
</operation>
<operation name="ping">
<messageReceiver class="org.apache.axis2.receivers.RawXMLINOnlyMessageReceiver"/>
<actionMapping>urn:ping</actionMapping>
</operation>
</service>
<!-- <parameter name="load-on-startup" locked="false">true</parameter> -->
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