Alfresco Indexer plugin + Apache ManifoldCF integration issues.

[ShashikanthC]

I'm trying to integrate Apache ManifoldCF into Alfresco, using Alfresco Indexer plugin from here. According to the docs in the repository, here are the steps I've followed to install alfresco-indexer-plugin and integrate apache manifoldcf:

1. Cloned Apache ManifoldCF from trunk (ManifoldCF), built it using ANT, MVN.
2. Cloned alfresco-indexer repo, built project using MVN, generate alfresco-indexer-webscripts amp, installed it onto local alfresco installtion using module-management-tool.
3. Copied alfresco-indexer-client jar from alfresco-indexer to apache manifoldcf's connector-libs dir.
4. Started alfresco, started manifoldcf, created a new repository connection in manifold webapp to using 'Alfresco Webscript' module.

This is where it's going south. ManifoldCF is unable to establish connection with Alfresco.

Connection Status: Threw exception: 'Alfresco connection check failed'

ManifoldCF logs:

ERROR 2020-02-10T12:19:43,930 (qtp892083096-412) - Missing resource 'Alfresco.HostnameMustNotBeEmpty' in bundle 'org.apache.manifoldcf.crawler.connectors.alfrescowebscript.common' for locale 'en_US'
java.util.MissingResourceException: Can't find resource for bundle java.util.PropertyResourceBundle, key Alfresco.HostnameMustNotBeEmpty
	at java.util.ResourceBundle.getObject(Unknown Source) ~[?:1.8.0_231]
	at java.util.ResourceBundle.getString(Unknown Source) ~[?:1.8.0_231]
	at org.apache.manifoldcf.core.i18n.Messages.getMessage(Messages.java:193) [mcf-core.jar:?]
	at org.apache.manifoldcf.core.i18n.Messages.getString(Messages.java:240) [mcf-core.jar:?]
	at org.apache.manifoldcf.core.i18n.Messages.getString(Messages.java:208) [mcf-core.jar:?]
	at org.apache.manifoldcf.ui.i18n.ResourceBundleWrapper.getString(ResourceBundleWrapper.java:44) [mcf-ui-core.jar:?]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_231]
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_231]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_231]
	at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_231]
	at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:395) [velocity-1.7.jar:1.7]
	...
	at org.apache.manifoldcf.ui.i18n.Messages.outputResourceWithVelocity(Messages.java:159) [mcf-ui-core.jar:?]
	at org.apache.manifoldcf.crawler.connectors.alfrescowebscript.Messages.outputResourceWithVelocity(Messages.java:116) [mcf-alfresco-webscript-connector.jar:?]
	at org.apache.manifoldcf.crawler.connectors.alfrescowebscript.ConfigurationHandler.outputConfigurationHeader(ConfigurationHandler.java:121) [mcf-alfresco-webscript-connector.jar:?]
	at org.apache.manifoldcf.crawler.connectors.alfrescowebscript.AlfrescoConnector.outputConfigurationHeader(AlfrescoConnector.java:544) [mcf-alfresco-webscript-connector.jar:?]
	at org.apache.manifoldcf.core.interfaces.ConnectorFactory.outputThisConfigurationHeader(ConnectorFactory.java:71) [mcf-core.jar:?]
	at org.apache.manifoldcf.crawler.interfaces.RepositoryConnectorFactory.outputConfigurationHeader(RepositoryConnectorFactory.java:147) [mcf-pull-agent.jar:?]
	at org.apache.jsp.editconnection_jsp._jspService(editconnection_jsp.java:448) [jsp/:?]
	...
ERROR 2020-02-10T12:23:11,561 (qtp892083096-411) - Json response is missing username.
com.github.maoo.indexer.client.AlfrescoParseException: Json response is missing username.
	at com.github.maoo.indexer.client.WebScriptsAlfrescoClient.getUsername(WebScriptsAlfrescoClient.java:315) ~[alfresco-indexer-client.jar:?]
	at com.github.maoo.indexer.client.WebScriptsAlfrescoClient.getUser(WebScriptsAlfrescoClient.java:308) ~[alfresco-indexer-client.jar:?]
	at com.github.maoo.indexer.client.WebScriptsAlfrescoClient.userFromHttpEntity(WebScriptsAlfrescoClient.java:299) ~[alfresco-indexer-client.jar:?]
	at com.github.maoo.indexer.client.WebScriptsAlfrescoClient.fetchUserAuthorities(WebScriptsAlfrescoClient.java:362) ~[alfresco-indexer-client.jar:?]
	at org.apache.manifoldcf.crawler.connectors.alfrescowebscript.AlfrescoConnector.check(AlfrescoConnector.java:133) [mcf-alfresco-webscript-connector.jar:?]
	at org.apache.jsp.viewconnection_jsp._jspService(viewconnection_jsp.java:246) [jsp/:?]
	...

The user credentials being provided to ManifolfCF are alfresco's admin credentials (for testing purpose).
Connection details:

Protocol:	http
Host name:	127.0.0.1
Port:	8080
Context:	/alfresco/service
Store protocol:	workspace
Store ID:	SpacesStore
User name:	alfresco
Password:	********

There are also errors in Alfresco that arised when alfresco-indexer-webscritps amp module was installed.

I don't know if I'm doing anything wrong regarding build & deployment of jars or any other. Any help on solving this issue is highly appreciated. Thank you for looking into this.

[ShashikanthC]

There are also errors in Alfresco that arised when alfresco-indexer-webscritps amp module was installed:

Feb 10, 2020 12:08:07 PM org.apache.catalina.core.ApplicationContext log
SEVERE: StandardWrapper.Throwable
java.lang.NoSuchMethodError: org.apache.cxf.common.util.ClassHelper.getRealClass(Lorg/apache/cxf/Bus;Ljava/lang/Object;)Ljava/lang/Class;
        at org.apache.cxf.jaxws.EndpointImpl.getImplementorClass(EndpointImpl.java:215)
        at org.apache.cxf.jaxws.EndpointImpl.getServer(EndpointImpl.java:399)
        at org.apache.cxf.jaxws.EndpointImpl.doPublish(EndpointImpl.java:334)
        at org.apache.cxf.jaxws.EndpointImpl.publish(EndpointImpl.java:251)
        at org.apache.cxf.jaxws.spi.ProviderImpl.createAndPublishEndpoint(ProviderImpl.java:155)
        at javax.xml.ws.Endpoint.publish(Unknown Source)
        at org.apache.chemistry.opencmis.server.impl.webservices.CmisWebServicesServlet.publish(CmisWebServicesServlet.java:335)
        at org.apache.chemistry.opencmis.server.impl.webservices.CmisWebServicesServlet.loadBus(CmisWebServicesServlet.java:311)
        at org.apache.cxf.transport.servlet.CXFNonSpringServlet.init(CXFNonSpringServlet.java:77)
        at org.apache.chemistry.opencmis.server.impl.webservices.CmisWebServicesServlet.init(CmisWebServicesServlet.java:114)
        at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1269)
        at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1182)
        at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1072)
        at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:5368)
        at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5660)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
        at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:899)
        at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:875)
        at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:652)
        at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:679)
        at org.apache.catalina.startup.HostConfig$DeployDescriptor.run(HostConfig.java:1966)
        at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
        ...

Feb 10, 2020 12:08:07 PM org.apache.catalina.core.StandardContext loadOnStartup
SEVERE: Servlet [cmisws11] in web application [/alfresco] threw load() exception
java.lang.NoSuchMethodError: org.apache.cxf.common.util.ClassHelper.getRealClass(Lorg/apache/cxf/Bus;Ljava/lang/Object;)Ljava/lang/Class;
        at org.apache.cxf.jaxws.EndpointImpl.getImplementorClass(EndpointImpl.java:215)
        at org.apache.cxf.jaxws.EndpointImpl.getServer(EndpointImpl.java:399)
        at org.apache.cxf.jaxws.EndpointImpl.doPublish(EndpointImpl.java:334)
        at org.apache.cxf.jaxws.EndpointImpl.publish(EndpointImpl.java:251)
        at org.apache.cxf.jaxws.spi.ProviderImpl.createAndPublishEndpoint(ProviderImpl.java:155)
        at javax.xml.ws.Endpoint.publish(Unknown Source)
        at org.apache.chemistry.opencmis.server.impl.webservices.CmisWebServicesServlet.publish(CmisWebServicesServlet.java:335)
        at org.apache.chemistry.opencmis.server.impl.webservices.CmisWebServicesServlet.loadBus(CmisWebServicesServlet.java:311)
        at org.apache.cxf.transport.servlet.CXFNonSpringServlet.init(CXFNonSpringServlet.java:77)
        at org.apache.chemistry.opencmis.server.impl.webservices.CmisWebServicesServlet.init(CmisWebServicesServlet.java:114)
        at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1269)
        at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1182)
        at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1072)
        at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:5368)
        at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5660)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
        at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:899)
        at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:875)
        at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:652)
        at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:679)
        at org.apache.catalina.startup.HostConfig$DeployDescriptor.run(HostConfig.java:1966)
        at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
        ...

When installing the amp module, one of the jars in the local alfresco installtion was overriden by alfresco-indexer-webscripts amp, which I beleive is causing the "java.lang.NoSuchMethodError". But I'm not sure about it.

Alfresco version: Enterprise - 5.2.2 (r73ead3c7-b41)

[EddieMay]

Hi @ShashikanthC,

The Alfresco Indexer plugin is not maintained by Alfresco ("Alfresco Indexer is an unsupported, community, experimental effort") and looks like it only supports Alfresco 5.0 - it will need updating & porting to support 5.2+. Perhaps you could raise an issue on the github project?