Issue while using Polling in IBM Worklight Push No

问题:

I was trying out WL 6.0 Push notification with Android device. Push notifications is working fine. I was also trying to use Polling. As per the docs from Info center,

for polling we need to invoke another procedure and after certain intervals when we get response from that procedure method push is done. Please correct me if I'm wrong.

So, as per this I have declared a new procedure named getNotificationsFromBackend and invoked that.

like this

WL.Server.createEventSource({
    name: 'PushEventSource',
    onDeviceSubscribe: 'deviceSubscribeFunc',
    onDeviceUnsubscribe: 'deviceUnsubscribeFunc',
    securityTest:'PushApplication-strong-mobile-securityTest',
    poll: {
        interval : 3,
        onPoll: getNotificationsFromBackend
    }   
});

function getNotificationsFromBackend() {
    WL.Logger.debug("hi");

}

Now, the problem I'm facing is when I hit Subscribe (from the sample app), console says it is unable to find the Adapter. Don't know whats going wrong, please help me on this.

I am getting this in console,

[ERROR   ] FWLSE0020E: Ajax request exception: Adapter 'PushAdapter' does not exist [project PushNotificationsProject]
[ERROR   ] FWLSE0117E: Error code: 1, error description: INTERNAL_ERROR, error message: FWLSE0069E: An internal error occurred during gadget request  [project PushNotificationsProject]Adapter 'PushAdapter' does not exist, User Identity {wl_authenticityRealm=null, wl_remoteDisableRealm=(name:null, loginModule:NullLoginModule), wl_antiXSRFRealm=(name:rcs7pje8os4fk6p59en152iqrq, loginModule:WLAntiXSRFLoginModule), PushAppRealm=(name:ss, loginModule:PushAppLoginModule), wl_deviceAutoProvisioningRealm=null, wl_deviceNoProvisioningRealm=(name:c343dd38-7688-35e2-8dde-2c6acaae1930, loginModule:WLDeviceNoProvisioningLoginModule), myserver=(name:ss, loginModule:PushAppLoginModule), wl_anonymousUserRealm=null}. [project PushNotificationsProject] 
                                                                                                               com.worklight.common.log.filters.ErrorFilter

回答1:

The reason for the problem is that your adapter was not successfully deployed. I tried this code and it works fine. Get notifications at the specified interval.

WL.Server.createEventSource({

    name: 'PushEventSource',
    onDeviceSubscribe: 'deviceSubscribeFunc',
    onDeviceUnsubscribe: 'deviceUnsubscribeFunc',
    securityTest:'PushApplication-strong-mobile-securityTest',
    poll: {
        interval : 3,
        onPoll: 'getNotificationsFromBackend'
    }   
});


function getNotificationsFromBackend() {

    WL.Logger.debug("hi");
    submitNotification("User1","This is Poll Notification");
}

The problem with your adapter code seems to be missing quotes for the function name for onPoll parameter.