gmane.comp.java.restlet

Important changes to Restlet mailing lists

Jerome Louvel — 2008-12-03T18:04:10

Hi all, A few days ago, Tigris.org completed a major upgrade on their open source hosting platform, where the Restlet project partly lives. As a result, some settings where changed in the mailing lists, potentially affecting some of you. I have just done some adjustments to the configuration that should solve most obvious issues such as moderation of some subscribers not registered with Tigris. Please report any remaining issue that you encounter. The good news is that they have added new features such as online posting without being subscribed. This could be useful for newcomers or people rarely posting. Finally, I have fully rewritten the mailing lists page with the greatest options to get you connected to the Restlet community (Tigris, Nabble, GMane): http://www.restlet.org/community/lists Best regards, Jérôme Louvel -- Restlet ~ Founder and Lead developer ~ http://www.restlet.org Noelios Technologies ~ Co-founder ~ http://www.noelios.com ------------------------------------------------------ http://restlet.tigris.org/ds/viewMessage.do?dsForumId=4447&dsMessageId=979010

Tutorial Missing Info

Simon Earnshaw — 2008-12-03T17:11:16

At this point in the tutorial: http://www.restlet.org/documentation/1.0/firstResource#part07 where it says: "This client application must be run as a standalone Java application using a couple of JARs: * org.restlet.jar * com.noelios.restlet.jar * com.noelios.restlet.ext.httpclient.jar * org.apache.commons.httpclient.jar" it has missed out some jars that seem to be crucial in getting the server to work properly - nameley: org.apache.commons.logging.jar org.apache.commons.codec.jar - just thought the docs should be updated to show that you need to include these jars too. Cheers Simon ------------------------------------------------------ http://restlet.tigris.org/ds/viewMessage.do?dsForumId=4447&dsMessageId=978983

another missing method due to using http client connector

Thilo Wehrmann — 2008-12-03T15:45:35

Hello together, currently I´m "fighting" with restlet to connect our database resources via url to the web. I want to run the service in the tomcat container. Without tomcat I can use the apache httpclient to connect to a url. In tomcat the same code does not work anymore. I don´t know what dependencies are not fullfilled. If I use the httpclient directly everything works fine but it´s not as elegant in comparison to the http client in restlet api. The code is quite simple: ...getRepresentation(...) Client client = new Client(Protocol.HTTP); Response response = client.get(url); in comparison to HttpClient httpClient = new HttpClient(); GetMethod getMetadataRequest = new GetMethod(url); try { httpClient.executeMethod(getMetadataRequest); BufferedReader in = new BufferedReader(new InputStreamReader( getMetadataRequest.getResponseBodyAsStream())); } catch (HttpException e) e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } ... do some data transformation return representation I included all the necessary jars regarding the readme.txt: c.n.r.e.httpclient,c.n.r.e.servlet,c.n.restlet,common-logging,javax.servlet,log4j,o.a.c.codec,o.a.c.httpclient,o.a.c.logging,o,restlet,postgresql,spring Thanks in advance, Thilo 03.12.2008 16:30:08 com.noelios.restlet.StatusFilter getStatus SCHWERWIEGEND: Unhandled exception or error intercepted java.lang.NoSuchMethodError: com.noelios.restlet.ext.httpclient.HttpClientHelper.getHelpedParameters()Lorg/restlet/util/Series; at com.noelios.restlet.ext.httpclient.HttpClientHelper.getMaxConnectionsPerHost(HttpClientHelper.java:185) at com.noelios.restlet.ext.httpclient.HttpClientHelper.start(HttpClientHelper.java:261) at org.restlet.Client.start(Client.java:118) at org.restlet.Restlet.init(Restlet.java:123) at org.restlet.Client.handle(Client.java:108) at org.restlet.Uniform.handle(Uniform.java:97) at org.restlet.Uniform.get(Uniform.java:74) at de.dlr.caf.wisdom.system.web.rest.Metadata.getRepresentation(Metadata.java:72) at org.restlet.resource.Resource.handleGet(Resource.java:415) at org.restlet.Finder.handle(Finder.java:292) at org.restlet.Filter.doHandle(Filter.java:105) at org.restlet.Filter.handle(Filter.java:134) at org.restlet.Router.handle(Router.java:444) at org.restlet.Filter.doHandle(Filter.java:105) at org.restlet.Filter.handle(Filter.java:134) at org.restlet.Filter.doHandle(Filter.java:105) at com.noelios.restlet.StatusFilter.doHandle(StatusFilter.java:87) at org.restlet.Filter.handle(Filter.java:134) at org.restlet.Filter.doHandle(Filter.java:105) at org.restlet.Filter.handle(Filter.java:134) at com.noelios.restlet.application.ApplicationHelper.handle(ApplicationHelper.java:96) at org.restlet.Application.handle(Application.java:293) at org.restlet.Filter.doHandle(Filter.java:105) at org.restlet.Filter.handle(Filter.java:134) at org.restlet.Router.handle(Router.java:444) at org.restlet.Filter.doHandle(Filter.java:105) at org.restlet.Filter.handle(Filter.java:134) at org.restlet.Router.handle(Router.java:444) at org.restlet.Filter.doHandle(Filter.java:105) at com.noelios.restlet.StatusFilter.doHandle(StatusFilter.java:87) at org.restlet.Filter.handle(Filter.java:134) at org.restlet.Filter.doHandle(Filter.java:105) at org.restlet.Filter.handle(Filter.java:134) at com.noelios.restlet.component.ComponentHelper.handle(ComponentHelper.java:118) at org.restlet.Component.handle(Component.java:230) at org.restlet.Server.handle(Server.java:281) at com.noelios.restlet.ServerHelper.handle(ServerHelper.java:99) at com.noelios.restlet.http.HttpServerHelper.handle(HttpServerHelper.java:94) at com.noelios.restlet.ext.servlet.ServerServlet.service(ServerServlet.java:397) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447) at java.lang.Thread.run(Thread.java:595) 03.12.2008 16:30:08 com.noelios.restlet.LogFilter afterHandle

another missing method

Thilo Wehrmann — 2008-12-03T15:42:38

204 switched to 404 in handleGet

Ryan Niemeyer — 2008-12-02T20:22:10

On line 501 in version 1.1.1 of org.restlet.resource.Resource.handleGet(), there's logic that sets the response status to 404 if the representation is null and the response status is 200-299. That logic doesn't seem to account for status 204, which by definition should not contain a message body. In my resource, I was overriding represent(Variant) and in certain situations setting the response status to 204 and returning a null response, however the base class flipped that to a 404 on me. I can obviously work around this by overriding handleGet() (any other suggestions?), but ideally line 501 in handleGet would be changed to account for 204/null being an acceptable GET response. Code snippet in question... if (selectedRepresentation == null) { if ((getResponse().getStatus() == null) || getResponse().getStatus().isSuccess()) { getResponse().setStatus(Status.CLIENT_ERROR_NOT_FOUND); } else { // Keep the current status as the developer might prefer a // special status like 'method not authorized'. } ------------------------------------------------------ http://restlet.tigris.org/ds/viewMessage.do?dsForumId=4447&dsMessageId=912495

Envoyez vos cartes de voeux personnalisees a bas prix

cartes de voeux — 2008-12-03T06:59:24

Should Restlet ever hold on to a TCP port after calling Component.stop()

Ian Clarke — 2008-12-02T18:07:19

I'm creating a HTTP listener and calling Component.stop() after every method in a unit test, and I keep getting exceptions complaining that the listen port is already in use. This even happened after I introduced a 1/2 second delay. When I switch this to only create the listener before the tests, and stop it after all are complete, it seems to work fine. Should Component.stop() release the TCP listen port immediately? Ian.

Code hanging doing a HTTP get

Ian Clarke — 2008-12-02T17:01:51

My code is hanging here (while trying to do a HTTP get) - any ideas? Thread [main] (Suspended) Object.wait(long) line: not available [native method] MultiThreadedHttpConnectionManager.doGetConnection(HostConfiguration, long) line: 518 MultiThreadedHttpConnectionManager.getConnectionWithTimeout(HostConfiguration, long) line: 416 HttpMethodDirector.executeMethod(HttpMethod) line: 153 HttpClient.executeMethod(HostConfiguration, HttpMethod, HttpState) line: 397 HttpClient.executeMethod(HttpMethod) line: 323 HttpMethodCall.sendRequest(Request) line: 313 HttpClientConverter.commit(HttpClientCall, Request, Response) line: 418 HttpClientHelper(HttpClientHelper).handle(Request, Response) line: 108 Client.handle(Request, Response) line: 157 Client(Uniform).handle(Request) line: 108 ApiAuthTest.get(String, String, String) line: 87 ApiAuthTest.testAuth() line: 74 NativeMethodAccessorImpl.invoke0(Method, Object, Object[]) line: not available [native method] NativeMethodAccessorImpl.invoke(Object, Object[]) line: 39 DelegatingMethodAccessorImpl.invoke(Object, Object[]) line: 25 Method.invoke(Object, Object...) line: 597 MethodHelper.invokeMethod(Method, Object, Object[]) line: 580 Invoker.invokeMethod(Object[], int, ITestNGMethod, Object[], XmlSuite, Map, ITestClass, ITestNGMethod[], ITestNGMethod[], ConfigurationGroupMethods) line: 478 Invoker.invokeTestMethod(Object[], ITestNGMethod, Object[], XmlSuite, Map, ITestClass, ITestNGMethod[], ITestNGMethod[], ConfigurationGroupMethods) line: 617 Invoker.invokeTestMethods(ITestNGMethod, ITestNGMethod[], int, XmlSuite, Map, ConfigurationGroupMethods, Object[], ITestContext) line: 885 TestMethodWorker.invokeTestMethods(ITestNGMethod, Object[], ITestContext) line: 126 TestMethodWorker.run() line: 110 TestRunner.runWorkers(List, String) line: 712 TestRunner.privateRun(XmlTest) line: 582 TestRunner.run() line: 477 SuiteRunner.runTest(TestRunner) line: 324 SuiteRunner.runSequentially() line: 319 SuiteRunner.privateRun() line: 292 SuiteRunner.run() line: 198 RemoteTestNG(TestNG).createAndRunSuiteRunners(XmlSuite) line: 823 RemoteTestNG(TestNG).runSuitesLocally() line: 790 RemoteTestNG(TestNG).run() line: 708 RemoteTestNG.run() line: 73 RemoteTestNG.main(String[]) line: 124

Restlet and Java 6

Raif S. Naffah — 2008-12-02T07:38:31

hello there, before i delve in with a debugger i thought i'd ask first: are there any known issues running Restlet (w/ ServerServlet) in tomcat 6.0.18 with: # java -version java version "1.6.0_10" Java(TM) SE Runtime Environment (build 1.6.0_10-b33) Java HotSpot(TM) Server VM (build 11.0-b15, mixed mode) and # uname -a Linux ... 2.6.27.5-41.fc9.i686 #1 SMP Thu Nov 13 20:52:14 EST 2008 i686 athlon i386 GNU/Linux TIA + cheers; rsn ------------------------------------------------------ http://restlet.tigris.org/ds/viewMessage.do?dsForumId=4447&dsMessageId=148338

java.lang.AbstractMethodError: org.restlet.util.Engine.fireContextChanged

Ian Clarke — 2008-12-01T05:44:06

Just upgraded to Restlet 1.1.1 (using Maven), and I'm seeing the following error when I attempt to call a unit test that worked previously, any ideas? :- Caused by: java.lang.AbstractMethodError: org.restlet.util.Engine.fireContextChanged(Lorg/restlet/Restlet;Lorg/restlet/Context;)V at org.restlet.Restlet.(Restlet.java:90) at org.restlet.Connector.(Connector.java:83) at org.restlet.Client.(Client.java:82) at org.restlet.Client.(Client.java:101) at org.restlet.Client.(Client.java:121)

after POST with a response of type DomRepresentation client hangson getting response?

Eugeny N Dzhurinsky — 2008-11-29T21:40:00

Hello there! I just started to learn RESTlet framework and I am facing some strange issue I can't handle. I've created the simple resource, which verifies if such user exists and if so - returns the unique hash for the user. I also wrote the simple test case, which starts the REST service and then sends the request to authenticate the user. At this point there is the strange issue appearing: when DomRepresentation is used, the test simply hangs on valid user (when the response is sent), but when StringRepresentation is used - everything works fine. The code for the Service: ============================================================================================ import org.apache.log4j.Logger; import org.restlet.Context; import org.restlet.data.Form; import org.restlet.data.MediaType; import org.restlet.data.Request; import org.restlet.data.Response; import org.restlet.data.Status; import org.restlet.resource.DomRepresentation; import org.restlet.resource.Representation; import org.restlet.resource.Resource; import org.restlet.resource.ResourceException; import org.restlet.resource.Variant; import org.w3c.dom.Document; import org.w3c.dom.Element; public class SignIn extends Resource { private static final Logger log = Logger.getLogger(SignIn.class); private CredentialsDao dao; private HashGeneratorInterface hashGenerator; /** * < at >see org.restlet.resource.Resource#init(org.restlet.Context, * org.restlet.data.Request, org.restlet.data.Response) */ < at >Override public void init(final Context context, final Request request, final Response response) { super.init(context, request, response); setModifiable(true); getVariants().add(new Variant(MediaType.TEXT_XML)); } /** * < at >see org.restlet.resource.Resource#acceptRepresentation(org.restlet.resource.Representation) */ < at >Override public void acceptRepresentation(final Representation entity) throws ResourceException { final Form form = new Form(entity); final String username = form.getFirstValue("username"); final String password = form.getFirstValue("password"); final Credentials credentials = dao.loadCredentialsByUsername(username); final Response response = getResponse(); try { if (credentials != null && credentials.getPassword().equals( hashGenerator.generateHash(credentials.getUuid() .toString(), password))) { final DomRepresentation representation = new DomRepresentation( MediaType.TEXT_XML); final Document document = representation.getDocument(); final Element uuid = document.createElement("uuid"); uuid.setTextContent(credentials.getUuid().toString()); document.appendChild(uuid); document.normalizeDocument(); response.setEntity(representation); response.setStatus(Status.SUCCESS_OK); } else response.setStatus(Status.CLIENT_ERROR_UNAUTHORIZED); } catch (final Exception e) { log.error(e, e); response.setStatus(Status.SERVER_ERROR_INTERNAL); } } public void setDao(final CredentialsDao dao) { this.dao = dao; } /** * < at >param hashGenerator * the hashGenerator to set */ public void setHashGenerator(final HashGeneratorInterface hashGenerator) { this.hashGenerator = hashGenerator; } } ============================================================================================ The code for the test: ============================================================================================ import junit.framework.Assert; import org.dbunit.dataset.xml.FlatXmlDataSet; import org.dbunit.operation.DatabaseOperation; import org.junit.AfterClass; import org.junit.Before; import org.junit.BeforeClass; import org.junit.Test; import org.restlet.Client; import org.restlet.Component; import org.restlet.data.Form; import org.restlet.data.Protocol; import org.restlet.data.Reference; import org.restlet.data.Response; import org.restlet.resource.Representation; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; public class TestRestImplementation { private static Component server; < at >BeforeClass public static void startupContainer() throws Exception { // TODO setup the REST container here DBUnitDatabaseAdapter.initSqlMapClient(); final ApplicationContext ctx = new ClassPathXmlApplicationContext( new String[] { "applicationContext-server.xml" }); server = (Component) ctx.getBean("top"); server.start(); } < at >Before public void cleanupDatabase() throws Exception { DBUnitDatabaseAdapter.cleanDatabase(); } < at >Test(timeout = 5000) public void testSignin() throws Exception { final Client client = new Client(Protocol.HTTP); final Reference itemsUri = new Reference( "http://localhost:3000/users/signin"); DatabaseOperation.INSERT.execute(DBUnitDatabaseAdapter.connection, new FlatXmlDataSet(TestRestImplementation.class .getResourceAsStream("/dbunit/credentials.xml"))); // incorrect password goes here Form form = new Form(); form.add("username", "username"); form.add("password", "123456789"); Representation rep = form.getWebRepresentation(); Response response = client.post(itemsUri, rep); Assert.assertTrue(response.getStatus().toString(), response.getStatus() .isError()); // correct password goes here form = new Form(); form.add("username", "username"); form.add("password", "123456"); rep = form.getWebRepresentation(); response = client.post(itemsUri, rep); Assert.assertFalse(response.getStatus().toString(), response .getStatus().isError()); } < at >AfterClass public static void shutdownContainer() throws Exception { server.stop(); } } ============================================================================================ Can somebody please explain what am I missing here? Thank you in advance!

Posting a form with a file

Jérémy Bogatirsky — 2008-11-26T16:33:55

Hi all (my first post), my question is concerning file upload within a form. I'm currenlty using Restlet 1.1.1. I have both client and server developed with Restlet. I'd like to make a post call, sending 2 (key, value) pairs and a file. I success this by making 2 post calls, one for the 2 (key, value) pairs, simply using a Form and its WebRepresentation, and one for the file, using a FileRepresenation (with a MediaType.APPLICATION_OCTECT_STREAM, as my file could be a binary one or a text one -it's a certificat-). That's works. My question : is it possible to make only 1 post call including the 2 (key, value) pairs and the file (which can be binary or plain text) ? Thanks in advance and sorry if my english isn't so clear :) Regards, Jérémy

ServletServlet example

Mark Rosenthal — 2008-11-25T22:37:49

When I try to download the sample sources, http://www.restlet.net/source/browse/restlet/trunk/modules/org.restlet.example/src/org/restlet/example/dist/testServlet.zip, referenced on the Restlet 1.1 - User FAQ page, I get the following not found message: The requested URL /source/browse/restlet/trunk/modules/org.restlet.example/src/org/restlet/example/dist/testServlet.zip was not found on this server. Does anyone know if it has moved, and if so, where? Thanks in advance.

Atom Extension: which RFC draft/version?

Thom Nelson — 2008-11-25T22:29:19

Hi all, I was starting to code a set of Resource classes which implement the Atom Publishing Protocol, and wanted to use the org.restlet.atom.ext extension, but it looks like this implements an older version. For example, the Collection class still uses the "member-type" element of app:collection, which hasn't existed since draft 8. Here are links to the latest version (RFC 5023) as well as the older drafts: http://bitworking.org/projects/atom/ I'll be glad to help out implementing the latest version of the spec if needed. Thanks, Thom

Restlet "Directory" suggestion

Cliff Binstock — 2008-11-25T17:16:15

Thierry, et al, I have been working with the "Directory" class, and running into limitations. I realized that because I am also running Tomcat, the built-in webdav met my needs. However--and because you were asking for suggestions--I realized that the Directory class could easily be improved: 1) Allow for stylesheets, see Tomcat's WebdavServlet setup (localXsltFile, and globalXsltFile). Note that a URI (instead of a path) would be even better. 2) Have the default representation return XHTML (instead of the current nonX HTML). This would allow a programmatic caller to read the list as XML (a request from one of my users). 3) Add a simple authorization hook, or at least clearly describe how to authorize access to certain directories. Note that even in Tomcat, I had to go digging through the code to figure out how to subclass. 4) Add full webdav capability. Given that WebdavServlet is Apache License--and not very big--it seems that you could easily support full webdav out of the box. Cliff Binstock Coyote Reporting

calling PUT and DELETE

Gan123 — 2008-11-24T14:07:50

Hi, i am working on a web application using RESTlet, wanted to invoke PUT and DELETE. some time back when i am searching for restlet resources i came across one page where author discussing about invoking PUT and DELETE using ajax, can any one tell me what URL that is available or tell me how it can be done? Thanks in advance

Distributed Caching solution.

Gan123 — 2008-11-24T13:10:42

Among EHCache and Memcache which is the best one to choose for restful application to work with distributed caching?

TCP RST attack detected on file upload cut

Diego Ballve — 2008-11-22T07:59:21

Hello, I'm observing an odd situation where restlet is involved: pull the net cable during file upload and router (hardware box, not Router.class) detects TCP RST attack and blacklist our server for access from subnet. This is the topology: - office subnet: client application - office router: NAT - remove server: Apache HTTPS proxying to localhost - remove server: Restlet with default HTTP connector The behavior can be consistently reproduced with our setup and access to remote server is temporarily blocked to entire office subnet. The client application makes a GET and then a POST w/ a big file, so that I have time to pull the plug, and that's it. I tried reading a bit about TCP RST attack but so far I do not know how to avoid this problem, except for disabling the attack detection in the router or telling people not to pull the plug during upload. If anybody has some insights to share, I appreciate. Thanks, Diego

Usurping Directory

Cliff Binstock — 2008-11-21T22:53:48

I would like to modify the standard Directory to return something different than "the" file when a file is encountered. For example, peruse a directory structure (default behavior), but when you get to the "bottom" (an actual file), then return a report based on that file, instead of the file itself. It appears that I need a custom "DirectoryResource" which is attached to a "Directory" via #setTargetClass. I have the following questions: 1.Setting the target class doesn't seem to be invoking the resource 2.I'm not sure what I would need to override to have custom behavior: #getVariants? 3.Is there a better way to approach the problem? Thanks in advance, Cliff

how to Redirect...

Gan123 — 2008-11-21T15:01:01

Hi, Just started exploring restlet and trying to implement a simple employee details info management app. it have two pages, one to create a new employee. second that lists all employees. once the employee is created the resource should be redirected to other resource which will list all the employees. how i could do this either by giving URI or by giving second resource ref in 1st resource? Thanks in advance.

Restlet MVC

Gan123 — 2008-11-21T07:09:59

i am creating a web application using Restlet based on MVC. i have configured ServlerServlet to invoke my Application class, where i have all the URI mappings. i am planning to use the Application class as controller and Resource to implement business logic with other required patterns. can any one suggest me whether this is the correct way to go ahead to implement MVC application in RESTlet? how and when the Application will be loaded? is it for every request or once per application ? Thanks in advance.