Question

I’m using notnoop APNS Java library to send APNS notifications. Since we have a big number of users, we need to send APNS notifications in batch. According to the notnoop API, the following method seems to be the best choice:

push(Collection<String> deviceTokens, String payload)

http://notnoop.github.com/java-apns/apidocs/com/notnoop/apns/ApnsService.html

This method send a single message to multiple devices in a batch. We want to send different specific message for each device but still send all of the notifications in a batch. I didn’t find any proper methods in notnoop library to do this. Does anyone have experience on this? Is it possible to do this with notnoop library? Does Apple APNS server support this kind of pushing?

Thanks in advance!

Best,
J

Answer 1

You will have to iterate through your devices individually and build a separate payload for each of them. In this example, we pass a different badge count to every user:

Declare your ApnsService as a thread pool so the push goes fast

    ApnsService service = null;

        service = APNS.newService()
                .withCert(certificatePath, certificatePassword)
                .withProductionDestination()
                .asPool(threadCount)
                .build();


        service.start();

Build your payload base outside your device iteration

        PayloadBuilder payloadBuilder = APNS.newPayload();

        payloadBuilder = payloadBuilder
                .alertBody("yourMessage")
                .sound("default"));

Iterate through your devices and add the custom message or parameters

        for (ApnsDevice apnsDevice : apnsDeviceList) {
            try {
                PayloadBuilder perDevicePayloadBuilder = payloadBuilder.copy()
                        .badge(apnsDevice.getBadgeCount()+1);

                // check if the message is too long (it won't be sent if it is)
                //and trim it if it is.
                if (perDevicePayloadBuilder.isTooLong()) {
                    logger.warn("Payload is too long, shrinking it");
                    perDevicePayloadBuilder = perDevicePayloadBuilder.shrinkBody();
                }

                String token = apnsDevice.getDeviceToken();

                service.push(token, perDevicePayloadBuilder.build());

            } catch (Exception ex) {
               logger.error("Error while pushing apns alerts", ex);
            }
        }