[jboss-jira] [JBoss JIRA] (WFLY-5045) Undertow mod_cluster CLI: IllegalArgumentException: value is null on modcluster:read-resource

Undertow mod_cluster CLI: IllegalArgumentException: value is null on modcluster:read-resource --------------------------------------------------------------------------------------------- Key: WFLY-5045 URL: https://issues.jboss.org/browse/WFLY-5045 Project: WildFly Issue Type: Bug Components: Web (Undertow) Affects Versions: 10.0.0.Alpha6 Environment: EAP 7.0.0.DR7, Undertow 1.3.0.Beta4 Reporter: Michal Karm Babacek Assignee: Stuart Douglas Priority: Blocker *Undertow 1.3.0.Beta3*, *EAP 7.0.0.DR6* worked perfectly with {{modcluster:read-resource}} recursive operations: h3. Setup # Add socker binding: {{/socket-binding-group=standard-sockets/socket-binding=mod-cluster-adv:add(multicast-address=224.0.1.105,port=65530)}} # Configure mod_cluster proxy: {{/subsystem=undertow/configuration=filter/mod-cluster=modcluster:add(advertise-frequency=10000,advertise-path=/,advertise-protocol=http,advertise-socket-binding=mod-cluster-adv,management-socket-binding=http,management-access-predicate=undefined,broken-node-timeout=10,cached-connections-per-thread=5,connection-idle-timeout=60,connections-per-thread=10,health-check-interval=10000,max-request-time=-1,request-queue-size=10,security-key=undefined,security-realm=undefined,worker=default)}} # Add mod_cluster filter: {{/subsystem=undertow/server=default-server/host=default-host/filter-ref=modcluster:add()}} # As soon as worker connects: {noformat}UT005053: Registering node localhost, connection: ajp://karm.brq.redhat.com:8019/?# UT005045: Registering context /clusterbench, for node localhost{noformat}, we try to list the configuration: # List configuration including runtime recursively: {{/subsystem=undertow/configuration=filter/mod-cluster=modcluster:read-resource(include-runtime=true, recursive=true, recursive-depth=100)}} h3. Error The output of the last aforementioned command with *EAP 7.0.0.DR6, Undertow 1.3.0.Beta3* is:{noformat} { "outcome" => "success", "result" => { "advertise-frequency" => 10000, "advertise-path" => "/", "advertise-protocol" => "http", "advertise-socket-binding" => "mod-cluster-adv", "broken-node-timeout" => 10, "cached-connections-per-thread" => 5, "connection-idle-timeout" => 60, "connections-per-thread" => 10, "health-check-interval" => 10000, "management-access-predicate" => undefined, "management-socket-binding" => "http", "max-request-time" => -1, "request-queue-size" => 10, "security-key" => undefined, "security-realm" => undefined, "worker" => "default", "balancer" => {"mycluster" => {"node" => {"localhost" => { "load" => 81, "status" => "NODE_UP", "context" => {"/clusterbench" => { "requests" => 0, "status" => "enabled" }} }}}} } }{noformat} whereas with *EAP 7.0.0.DR7, Undertow 1.3.0.Beta4*; it is: {noformat}ERROR [org.jboss.as.controller.management-operation] (management-handler-thread - 6) WFLYCTL0013: Operation ("read-attribute") failed - address: ([ ("subsystem" => "undertow"), ("configuration" => "filter"), ("mod-cluster" => "modcluster"), ("balancer" => "mycluster") ]): java.lang.IllegalArgumentException: value is null at org.jboss.dmr.ModelNode.<init>(ModelNode.java:162) at org.wildfly.extension.undertow.filters.ModClusterBalancerDefinition$3.handleNode(ModClusterBalancerDefinition.java:117) at org.wildfly.extension.undertow.filters.ModClusterBalancerDefinition$AbstractBalancerOperation.execute(ModClusterBalancerDefinition.java:173) at org.jboss.as.controller.operations.global.ReadAttributeHandler.doExecuteInternal(ReadAttributeHandler.java:174) at org.jboss.as.controller.operations.global.ReadAttributeHandler.doExecute(ReadAttributeHandler.java:137) at org.jboss.as.controller.operations.global.GlobalOperationHandlers$AbstractMultiTargetHandler.execute(GlobalOperationHandlers.java:248) at org.jboss.as.controller.operations.global.GlobalOperationHandlers$AvailableResponseWrapper.execute(GlobalOperationHandlers.java:701) at org.jboss.as.controller.AbstractOperationContext.executeStep(AbstractOperationContext.java:841) at org.jboss.as.controller.AbstractOperationContext.processStages(AbstractOperationContext.java:632) at org.jboss.as.controller.AbstractOperationContext.executeOperation(AbstractOperationContext.java:357) at org.jboss.as.controller.OperationContextImpl.executeOperation(OperationContextImpl.java:1235) at org.jboss.as.controller.ModelControllerImpl.internalExecute(ModelControllerImpl.java:392) at org.jboss.as.controller.ModelControllerImpl.execute(ModelControllerImpl.java:223) at org.jboss.as.controller.remote.ModelControllerClientOperationHandler$ExecuteRequestHandler.doExecute(ModelControllerClientOperationHandler.java:207) at org.jboss.as.controller.remote.ModelControllerClientOperationHandler$ExecuteRequestHandler.access$300(ModelControllerClientOperationHandler.java:129) at org.jboss.as.controller.remote.ModelControllerClientOperationHandler$ExecuteRequestHandler$1$1.run(ModelControllerClientOperationHandler.java:151) at org.jboss.as.controller.remote.ModelControllerClientOperationHandler$ExecuteRequestHandler$1$1.run(ModelControllerClientOperationHandler.java:147) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:422) at org.jboss.as.controller.AccessAuditContext.doAs(AccessAuditContext.java:92) at org.jboss.as.controller.remote.ModelControllerClientOperationHandler$ExecuteRequestHandler$1.execute(ModelControllerClientOperationHandler.java:147) at org.jboss.as.protocol.mgmt.AbstractMessageHandler$2$1.doExecute(AbstractMessageHandler.java:298) at org.jboss.as.protocol.mgmt.AbstractMessageHandler$AsyncTaskRunner.run(AbstractMessageHandler.java:518) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) at org.jboss.threads.JBossThread.run(JBossThread.java:320){noformat}It is noteworthy that *until* any worker joins the balancer, the operation works just fine (DR7, Beta4): {noformat}{ "outcome" => "success", "result" => { "advertise-frequency" => 10000, "advertise-path" => "/", "advertise-protocol" => "http", "advertise-socket-binding" => "mod-cluster-adv", "broken-node-timeout" => 10, "cached-connections-per-thread" => 5, "connection-idle-timeout" => 60, "connections-per-thread" => 10, "health-check-interval" => 10000, "management-access-predicate" => undefined, "management-socket-binding" => "http", "max-request-time" => -1, "request-queue-size" => 10, "security-key" => undefined, "security-realm" => undefined, "use-alias" => true, "worker" => "default", "balancer" => undefined } }{noformat} I see this issue as a {color:red}Blocker{color}, because it not only breaks all current test automation but also renders the Undertow mod_cluster proxy CLI hardly usable for any administration.