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#import "MGLNetworkConfiguration_Private.h"
#include <mbgl/storage/reachability.h>
static NSString * const MGLStartTime = @"start_time";
static NSString * const MGLResourceType = @"resource_type";
NSString * const kMGLDownloadPerformanceEvent = @"mobile.performance_trace";
@interface MGLNetworkConfiguration ()
@property (strong) NSURLSessionConfiguration *sessionConfig;
@property (nonatomic, strong) NSMutableDictionary<NSString *, NSDictionary*> *events;
@property (nonatomic, weak) id<MGLNetworkConfigurationMetricsDelegate> metricsDelegate;
@property (nonatomic) dispatch_queue_t eventsQueue;
@end
@implementation MGLNetworkConfiguration
- (instancetype)init {
if (self = [super init]) {
self.sessionConfiguration = nil;
_events = [NSMutableDictionary dictionary];
_eventsQueue = dispatch_queue_create("com.mapbox.network-configuration", DISPATCH_QUEUE_CONCURRENT);
}
return self;
}
+ (instancetype)sharedManager {
static dispatch_once_t onceToken;
static MGLNetworkConfiguration *_sharedManager;
dispatch_once(&onceToken, ^{
_sharedManager = [[self alloc] init];
});
return _sharedManager;
}
- (void)setSessionConfiguration:(NSURLSessionConfiguration *)sessionConfiguration {
@synchronized (self) {
if (sessionConfiguration == nil) {
_sessionConfig = [self defaultSessionConfiguration];
} else {
_sessionConfig = sessionConfiguration;
}
}
}
- (NSURLSessionConfiguration *)sessionConfiguration {
NSURLSessionConfiguration *sessionConfig = nil;
@synchronized (self) {
sessionConfig = _sessionConfig;
}
return sessionConfig;
}
- (NSURLSessionConfiguration *)defaultSessionConfiguration {
NSURLSessionConfiguration* sessionConfiguration = [NSURLSessionConfiguration defaultSessionConfiguration];
sessionConfiguration.timeoutIntervalForResource = 30;
sessionConfiguration.HTTPMaximumConnectionsPerHost = 8;
sessionConfiguration.requestCachePolicy = NSURLRequestReloadIgnoringLocalCacheData;
sessionConfiguration.URLCache = nil;
return sessionConfiguration;
}
- (void)startDownloadEvent:(NSString *)urlString type:(NSString *)resourceType {
if (urlString && ![self eventDictionaryForKey:urlString]) {
NSDate *startDate = [NSDate date];
[self setEventDictionary:@{ MGLStartTime: startDate, MGLResourceType: resourceType } forKey:urlString];
}
}
- (void)stopDownloadEventForResponse:(NSURLResponse *)response {
[self sendEventForURLResponse:response withAction:nil];
}
- (void)cancelDownloadEventForResponse:(NSURLResponse *)response {
[self sendEventForURLResponse:response withAction:@"cancel"];
}
- (void)sendEventForURLResponse:(NSURLResponse *)response withAction:(NSString *)action
{
if ([response isKindOfClass:[NSURLResponse class]]) {
NSString *urlString = response.URL.relativePath;
if (urlString && [self eventDictionaryForKey:urlString]) {
NSDictionary *eventAttributes = [self eventAttributesForURL:response withAction:action];
[self removeEventDictionaryForKey:urlString];
dispatch_async(dispatch_get_main_queue(), ^{
[self.metricsDelegate networkConfiguration:self didGenerateMetricEvent:eventAttributes];
});
}
}
}
- (NSDictionary *)eventAttributesForURL:(NSURLResponse *)response withAction:(NSString *)action
{
NSString *urlString = response.URL.relativePath;
NSDictionary *parameters = [self eventDictionaryForKey:urlString];
NSDate *startDate = [parameters objectForKey:MGLStartTime];
NSDate *endDate = [NSDate date];
NSTimeInterval elapsedTime = [endDate timeIntervalSinceDate:startDate];
NSDateFormatter* iso8601Formatter = [[NSDateFormatter alloc] init];
iso8601Formatter.dateFormat = @"yyyy-MM-dd'T'HH:mm:ssZ";
NSString *createdDate = [iso8601Formatter stringFromDate:[NSDate date]];
NSMutableArray *attributes = [NSMutableArray array];
[attributes addObject:@{ @"name" : @"requestUrl" , @"value" : urlString }];
[attributes addObject:@{ @"name" : MGLResourceType , @"value" : [parameters objectForKey:MGLResourceType] }];
if ([response isKindOfClass:[NSHTTPURLResponse class]]) {
NSInteger responseCode = [(NSHTTPURLResponse *)response statusCode];
[attributes addObject:@{ @"name" : @"responseCode", @"value" : @(responseCode)}];
}
BOOL isWIFIOn = [[MGLReachability reachabilityWithHostName:response.URL.host] isReachableViaWiFi];
[attributes addObject:@{ @"name" : @"wifiOn", @"value" : @(isWIFIOn)}];
if (action) {
[attributes addObject:@{ @"name" : @"action" , @"value" : action }];
}
double elapsedTimeInMS = elapsedTime * 1000.0;
return @{
@"event" : kMGLDownloadPerformanceEvent,
@"created" : createdDate,
@"sessionId" : [NSUUID UUID].UUIDString,
@"counters" : @[ @{ @"name" : @"elapsedMS" , @"value" : @(elapsedTimeInMS) } ],
@"attributes" : attributes
};
}
#pragma mark - Events dictionary access
- (nullable NSDictionary*)eventDictionaryForKey:(nonnull NSString*)key {
__block NSDictionary *dictionary;
dispatch_sync(self.eventsQueue, ^{
dictionary = [self.events objectForKey:key];
});
return dictionary;
}
- (void)setEventDictionary:(nonnull NSDictionary*)dictionary forKey:(nonnull NSString*)key {
dispatch_barrier_async(self.eventsQueue, ^{
[self.events setObject:dictionary forKey:key];
});
}
- (void)removeEventDictionaryForKey:(nonnull NSString*)key {
dispatch_barrier_async(self.eventsQueue, ^{
[self.events removeObjectForKey:key];
});
}
@end
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