Description of problem:

  <groupId>org.rhq</groupId>
  <artifactId>rhq-jboss-as-7-jmx-util</artifactId>
  <packaging>jar</packaging>

The plugin requires the client jar file to be accessible. This may not happen if you are testing using a remote server. The following will fix that:

diff --git a/modules/plugins/jboss-as-7-jmx/src/main/java/org/rhq/modules/plugins/jbossas7/jmx/ApplicationMBeansDiscoveryComponent.java b/modules/plugins/jboss-as-7-jmx/src/main/java/org/rhq/modules/plugins/jbossas7/jmx/ApplicationMBeans
index aa924a8..9212197 100644
--- a/modules/plugins/jboss-as-7-jmx/src/main/java/org/rhq/modules/plugins/jbossas7/jmx/ApplicationMBeansDiscoveryComponent.java
+++ b/modules/plugins/jboss-as-7-jmx/src/main/java/org/rhq/modules/plugins/jbossas7/jmx/ApplicationMBeansDiscoveryComponent.java
@@ -35,7 +35,6 @@
 import org.mc4j.ems.connection.settings.ConnectionSettings;
 import org.mc4j.ems.connection.support.ConnectionProvider;
 import org.mc4j.ems.connection.support.metadata.JSR160ConnectionTypeDescriptor;
-
 import org.rhq.core.domain.configuration.Configuration;
 import org.rhq.core.domain.configuration.PropertySimple;
 import org.rhq.core.pluginapi.inventory.DiscoveredResourceDetails;
@@ -259,10 +258,10 @@ private PluginConfigProps() {
         File clientJarFile = new File(serverPluginConfiguration.getHomeDir(), "bin" + File.separator + "client"
             + File.separator + "jboss-client.jar");
         if (!clientJarFile.isFile()) {
-            LOG.warn(clientJarFile + " does not exist.");
-            return Collections.emptySet();
-        }
+            LOG.warn(clientJarFile + " does not exist in configured home directory. JMX connection will likely fail.");
+        } else {
             pluginConfig.setSimpleValue(CLIENT_JAR_LOCATION, clientJarFile.getAbsolutePath());
+        }
 
         EmsConnection emsConnection = null;
         try {
@@ -373,13 +372,17 @@ protected String getNewResourceVersion(Configuration pluginConfig) {
      * @return a new {@link EmsConnection} object or null if connecting failed
      */
     public static EmsConnection loadEmsConnection(Configuration pluginConfig) {
-        EmsConnection emsConnection = null;
         try {
-            File clientJarFile = new File(pluginConfig.getSimpleValue(CLIENT_JAR_LOCATION));
-
             ConnectionSettings connectionSettings = new ConnectionSettings();
+            String s = pluginConfig.getSimpleValue(CLIENT_JAR_LOCATION, "");
+            File clientJarFile = new File(s);
+            if (clientJarFile.canRead()) {
                 connectionSettings.initializeConnectionType(new A7ConnectionTypeDescriptor(clientJarFile));
                 connectionSettings.setLibraryURI(clientJarFile.getParent());
+            } else {
+                connectionSettings.initializeConnectionType(new JSR160ConnectionTypeDescriptor());
+                LOG.warn("cannot access client jar location " + clientJarFile);
+            }
             connectionSettings.setServerUrl( //
                 "service:jmx:remoting-jmx://" //
                     + pluginConfig.getSimpleValue(HOSTNAME) //
@@ -398,9 +401,6 @@ public static EmsConnection loadEmsConnection(Configuration pluginConfig) {
             if (LOG.isDebugEnabled()) {
                 LOG.debug("Could not create EmsConnection", e);
             }
-            if (emsConnection != null) {
-                emsConnection.close();
-            }
             return null;
         }
     }

The following doesn't really fix the situation, as it still attempts to connect to localhost using remoting-jmx:

INFO  19-05 11:19:55,189 (EndpointImpl.java:<clinit>:69)  -JBoss Remoting version (unknown)
DEBUG 19-05 11:19:55,332 (ApplicationMBeansDiscoveryComponent.java:loadEmsConnection:402)  -Could not create EmsConnection
org.mc4j.ems.connection.EmsConnectException: Could not connect [service:jmx:remoting-jmx://localhost:10008] org.mc4j.ems.connection.EmsConnectException: IOException: Check servic
e availability
        at org.mc4j.ems.impl.jmx.connection.support.providers.AbstractConnectionProvider.connect(AbstractConnectionProvider.java:106)
        at org.rhq.modules.plugins.jbossas7.jmx.ApplicationMBeansDiscoveryComponent.loadEmsConnection(ApplicationMBeansDiscoveryComponent.java:398)
        at org.rhq.modules.plugins.jbossas7.jmx.ApplicationMBeansDiscoveryComponent.discoverResources(ApplicationMBeansDiscoveryComponent.java:268)


WildFly 8.1 uses http remoting as well.

        String url = "service:jmx:http-remoting-jmx://localhost:9990";
        c.setSimpleValue(JMXDiscoveryComponent.CONNECTOR_ADDRESS_CONFIG_PROPERTY, url);
        c.setSimpleValue(JMXDiscoveryComponent.CONNECTION_TYPE, "org.mc4j.ems.connection.support.metadata.J2SE5ConnectionTypeDescriptor");



Version-Release number of selected component (if applicable): master a3c6d72a