Counting App Users For Billing

platform/ios/MGLMapboxEvents.h

@@ -1,5 +1,6 @@
 #import <Foundation/Foundation.h>
 
+extern NSString *const MGLEventTypeAppUserTurnstile;
 extern NSString *const MGLEventTypeMapLoad;
 extern NSString *const MGLEventTypeMapTap;
 extern NSString *const MGLEventTypeMapDragEnd;

platform/ios/MGLMapboxEvents.m

@@ -16,6 +16,7 @@
 static NSString *const MGLMapboxEventsUserAgent = @"MapboxEventsiOS/1.0";
 static NSString *MGLMapboxEventsAPIBase = @"https://api.tiles.mapbox.com";
 
+NSString *const MGLEventTypeAppUserTurnstile = @"appUserTurnstile";
 NSString *const MGLEventTypeMapLoad = @"map.load";
 NSString *const MGLEventTypeMapTap = @"map.click";
 NSString *const MGLEventTypeMapDragEnd = @"map.dragend";
@@ -277,6 +278,11 @@ - (instancetype) init {
  MGLMapboxEvents *strongSelf = weakSelf;
  [strongSelf validate];
  }];
+
+ // Turn the Mapbox Turnstile to Count App Users
+ dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_BACKGROUND, 0), ^{
+ [self pushTurnstileEvent];
+ });
  }
  return self;
 }
@@ -315,6 +321,7 @@ + (void)validate {
  [[MGLMapboxEvents sharedManager] validate];
 }
 
+// Used to determine if Mapbox Metrics should be collected at any given point in time
 - (void)validate {
  MGLAssertIsMainThread();
  BOOL enabledInSettings = [[self class] isEnabled];
@@ -414,6 +421,31 @@ - (void)startUpdatingLocation {
  }
 }
 
+- (void) pushTurnstileEvent {
+
+ __weak MGLMapboxEvents *weakSelf = self;
+
+ dispatch_async(_serialQueue, ^{
+
+ MGLMapboxEvents *strongSelf = weakSelf;
+
+ if ( ! strongSelf) return;
+
+ // Build only IDFV event
+ NSString *vid = [[[UIDevice currentDevice] identifierForVendor] UUIDString];
+ NSDictionary *vevt = @{@"event" : MGLEventTypeAppUserTurnstile,
+ @"created" : [strongSelf.rfc3339DateFormatter stringFromDate:[NSDate date]],
+ @"appBundleId" : strongSelf.appBundleId,
+ @"vendorId": vid};
+
+ // Add to Queue
+ [_eventQueue addObject:vevt];
+
+ // Flush
+ [strongSelf flush];
+ });
+}
+
 // Can be called from any thread. Can be called rapidly from
 // the UI thread, so performance is paramount.
 //
@@ -430,9 +462,11 @@ - (void) pushEvent:(NSString *)event withAttributes:(NSDictionary *)attributeDic
  __weak MGLMapboxEvents *weakSelf = self;
 
  dispatch_async(_serialQueue, ^{
+
  MGLMapboxEvents *strongSelf = weakSelf;
+
  if ( ! strongSelf) return;
- 
+
  // Metrics Collection Has Been Paused
  if (_paused) {
  return;