When I add "mygroup" as admin to "myroom" in the Openfire Admin console and then execute a GET for http://[server:port]/plugins/restapi/v1/chatrooms/myroom/, I get the expected result:
<chatRoom>
<roomName>myroom</roomName>
...
<adminGroups>
<adminGroup>mygroup</adminGroup>
</adminGroups>
</chatRoom>
When I try to PUT the exact same payload though, the request fails:
HTTP/1.1 500 Server Error
Date: Sun, 21 Aug 2016 15:20:49 GMT
Set-Cookie: JSESSIONID=c4tf6lzq9xlc192lg5swb9e94;Path=/;HttpOnly
Expires: Thu, 01 Jan 1970 00:00:00 GMT
Content-Length: 0
The Openfire error log contains:
2016.08.21 17:20:49 ERROR [Jetty-QTP-AdminConsole-728]: org.jivesoftware.openfire.container.PluginServlet -
java.lang.NullPointerException
at com.sun.xml.internal.bind.v2.runtime.reflect.Lister$CollectionLister.addToPack( Lister.java:289)
at com.sun.xml.internal.bind.v2.runtime.reflect.Lister$CollectionLister.addToPack( Lister.java:253)
at com.sun.xml.internal.bind.v2.runtime.unmarshaller.Scope.add(Scope.java:106)
at com.sun.xml.internal.bind.v2.runtime.property.ArrayERProperty$ReceiverImpl.rece ive(ArrayERProperty.java:198)
at com.sun.xml.internal.bind.v2.runtime.unmarshaller.UnmarshallingContext.endEleme nt(UnmarshallingContext.java:597)
at com.sun.xml.internal.bind.v2.runtime.unmarshaller.SAXConnector.endElement(SAXCo nnector.java:165)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.endElement(Abstrac tSAXParser.java:609)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanEndE lement(XMLDocumentFragmentScannerImpl.java:1776)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$Fragment ContentDriver.next(XMLDocumentFragmentScannerImpl.java:2964)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocument ScannerImpl.java:606)
at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocu mentScannerImpl.java:118)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocu ment(XMLDocumentFragmentScannerImpl.java:504)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Config uration.java:848)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Config uration.java:777)
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:141)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXP arser.java:1213)
at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXPa rserImpl.java:643)
at com.sun.xml.internal.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal0(U nmarshallerImpl.java:243)
at com.sun.xml.internal.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal(Un marshallerImpl.java:214)
at javax.xml.bind.helpers.AbstractUnmarshallerImpl.unmarshal(AbstractUnmarshallerI mpl.java:140)
at javax.xml.bind.helpers.AbstractUnmarshallerImpl.unmarshal(AbstractUnmarshallerI mpl.java:123)
at com.sun.jersey.core.impl.provider.entity.XMLRootElementProvider.readFrom(XMLRoo tElementProvider.java:115)
at com.sun.jersey.core.provider.jaxb.AbstractRootElementProvider.readFrom(Abstract RootElementProvider.java:111)
at com.sun.jersey.spi.container.ContainerRequest.getEntity(ContainerRequest.java:4 90)
at com.sun.jersey.server.impl.model.method.dispatch.EntityParamDispatchProvider$En tityInjectable.getValue(EntityParamDispatchProvider.java:123)
at com.sun.jersey.server.impl.inject.InjectableValuesProvider.getInjectableValues( InjectableValuesProvider.java:86)
at com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatch Provider$EntityParamInInvoker.getParams(AbstractResourceMethodDispatchProvider.j ava:153)
at com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatch Provider$ResponseOutInvoker._dispatch(AbstractResourceMethodDispatchProvider.jav a:203)
at com.sun.jersey.server.impl.model.method.dispatch.ResourceJavaMethodDispatcher.d ispatch(ResourceJavaMethodDispatcher.java:75)
at com.sun.jersey.server.impl.uri.rules.HttpMethodRule.accept(HttpMethodRule.java: 302)
at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule .java:147)
at com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule .java:108)
at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule .java:147)
at com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourc eClassesRule.java:84)
at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApp licationImpl.java:1542)
at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApp licationImpl.java:1473)
at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebAppl icationImpl.java:1419)
at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebAppl icationImpl.java:1409)
at com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:409 )
at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer. java:540)
at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer. java:715)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
at org.jivesoftware.openfire.container.PluginServlet.handleServlet(PluginServlet.j ava:318)
at org.jivesoftware.openfire.container.PluginServlet.service(PluginServlet.java:11 1)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:812)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.ja va:1669)
at org.jivesoftware.admin.PluginFilter.doFilter(PluginFilter.java:80)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.ja va:1652)
at org.jivesoftware.admin.AuthCheckFilter.doFilter(AuthCheckFilter.java:162)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.ja va:1652)
at com.opensymphony.module.sitemesh.filter.PageFilter.parsePage(PageFilter.java:11 8)
at com.opensymphony.module.sitemesh.filter.PageFilter.doFilter(PageFilter.java:52)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.ja va:1652)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:585)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:577)
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:22 3)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:11 27)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515)
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185 )
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:106 1)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandler Collection.java:215)
at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.jav a:110)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)
at org.eclipse.jetty.server.Server.handle(Server.java:499)
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:311)
at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:257)
at org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:544)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635 )
at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555)
at java.lang.Thread.run(Thread.java:745)
When I empty the <adminGroups> element, the PUT requests succeeds.
Tested on Openfire 4.0.3.