Critical alerts from push notifications using JSON code
Summarize
Summary of Critical alerts from push notifications using JSON code
This content explains how ServiceNow customers can configure push notifications as critical alerts by adding specific JSON code. The setup varies between iOS and Android operating systems and includes special considerations for the IT Service Management (ITSM) business unit. Critical alerts ensure that notifications are delivered with high priority and sound, overriding typical device settings in some cases.
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Key Features
- JSON Code for Critical Alerts: Two main JSON components are required:
- Push notification message structure: Defines the notification content.
- JSON defining the notification as critical: Sets sound parameters and priority to trigger critical alert behavior.
- Android Specific JSON: Includes a "priority":"high" setting within the
sncGoogleKeysdictionary to wake devices for critical alerts. - Cross-platform JSON for Sound: The
apsdictionary configures the alert sound with parameters:critical: 1to activate critical alertnameto specify the alert tone file (e.g., NotificationAlert-1.caf)volumeto set sound volume from 0.1 (quiet) to 1.0 (loud)
- Predefined Alert Tones: Several dramatic and suspenseful tones are available to customize the critical alert sound.
- ITSM Business Unit Support: If using the ITSM script include
CriticalPushPayloadBuilder, critical alerts are supported without additional configuration. Adjustments to volume, name, or critical status must be done by modifying script include parameters, noting that changes affect all ITSM implementations and may be overwritten by upgrades.
Important Considerations
- On certain Android devices (e.g., OnePlus and Oppo), hardware and Do Not Disturb settings can affect the behavior of critical alerts, such as volume control limitations or temporary disabling of Do Not Disturb mode during alert playback.
- Both iOS and Android JSON code must be included to support users on different platforms.
- If no custom tone name is specified, the system defaults to the app’s ringtone or the device’s default ringtone.
Practical Application for ServiceNow Customers
By implementing the described JSON code in the Push message content area, ServiceNow customers can elevate push notifications to critical alerts, ensuring urgent messages receive immediate attention on mobile devices. This enhances incident response and communication effectiveness within ITSM workflows and other business use cases.
You can make a push notification into a critical alert with the addition of some JSON code. Different JSON code is used for iOS and Android operating systems and for the ITSM business unit.
Critical alert notifications require two code elements: the push notification message structure and the JSON code that defines the notification as a critical alert. Add this code in the Push message content area. For more information, see Create mobile critical alerts.
On the Android platform, when a user receives a critical alert on certain phone types, they may experience the following device behavior:
- OnePlus devices with hardware-controlled ringer mode:
- On devices like OnePlus where the ringer mode is controlled by a physical switch, the app might not be able to override the notification sound volume if the device is set to silent or vibrate mode.
- OnePlus or Oppo device Do Not Disturb mode behavior:
- On certain devices, like Oppo and OnePlus, if Do Not Disturb (DND) mode is enabled, the DND setting might be temporarily turned off until the critical notification sound has finished playing.
Critical alert JSON to activate Android operating systems
json["sncGoogleKeys"] = {
"android": {
"priority": "high"
},
"priority": "high"
};
Critical alert JSON for all operating systems
The following JSON must be added so that a notification behaves as a critical alert.
var json = {};
json["aps"] = {
"sound": {
"critical": 1,
"name": "NotificationAlert-1.caf",
"volume": 1.0
}
};
- The critical parameter defines the notification as a critical alert.
1means the critical alert is active,0means the critical alert is inactive. - The name parameter is the name of the tone that is activated when a critical alert is sent. Some tones for critical alerts are listed in the table. For a complete list, see Configure sounds for push notifications.
Accepted file name values Tone rhythm NotificationAlert-2.cafDramatic NotificationAlert-2-Short.cafDramatic NotificationAlert-9.cafDramatic, Powerful NotificationAlert-9-Short.cafDramatic, Powerful NotificationAlert-10.cafDramatic, Suspenseful NotificationAlert-10-Short.cafDramatic, Suspenseful Note:If a name value isn’t defined, the system uses the application’s default ringtone. If an application doesn't have a defined ringtone, then the system uses the device's default ringtone. - The volume parameter defines the volume of the critical alert sound. The range is from
0.1as the quietest to1.0as the loudest.
Example JSON code block for critical alert
The following is a complete example block of JSON code that you must add and configure to activate a critical alert for Android and iOS devices.
json["sncGoogleKeys"] = {
"android": {
"priority": "high"
},
"priority": "high"
};
json["aps"]["sound"] = {
"critical": 1,
"name": "NotificationAlert-1.caf",
"volume": 1.0
};IT Service Management (ITSM) CriticalPushPayloader script include
CriticalPushPayLoadBuilder, created by the ITSM business unit. If so, then no additional configuration is required for critical alerts. Script includes are reusable server-side script logic that define a function or class.
CriticalPushPayLoadBuilder is a script include that contains functions to support critical alerts. The call of the script includes looks like this: CriticalPushPayloadBuilder (current, json,
attributes).buildJSON()Volume or Name parameters, or change the alert from critical to non-critical, you must access the function
parameters that the script include is getting as inputs.Changing the value of the critical alert script include affects all ITSM implementations of the script include. Similarly, an ITSM plugin upgrade could override your changes to your script include.