iOS/tvOS Application Integration¶

//CocoaPods、SPM 
#import "FTMobileSDK.h"
//Carthage 
#import <FTMobileSDK/FTMobileSDK.h>

import FTMobileSDK

-(BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions{
    // SDK FTMobileConfig settings
     // Local environment deployment, Datakit deployment
     //FTMobileConfig *config = [[FTMobileConfig alloc]initWithDatakitUrl:datakitUrl];
     // Using public DataWay deployment
    FTMobileConfig *config = [[FTMobileConfig alloc]initWithDatawayUrl:datawayUrl clientToken:clientToken];
    //config.enableSDKDebugLog = YES;              //debug mode
    config.compressIntakeRequests = YES;
    //Start SDK
    [FTMobileAgent startWithConfigOptions:config];

   //...
    return YES;
}

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
     // SDK FTMobileConfig settings
       // Local environment deployment, Datakit deployment
       //let config = FTMobileConfig(datakitUrl: url)
       // Using public DataWay deployment
     let config = FTMobileConfig(datawayUrl: datawayUrl, clientToken: clientToken)
     //config.enableSDKDebugLog = true              //debug mode
     config.compressIntakeRequests = true           //Compress reported data
     FTMobileAgent.start(withConfigOptions: config)
     //...
     return true
}

    //Enable rum
    FTRumConfig *rumConfig = [[FTRumConfig alloc]initWithAppid:appid];
    rumConfig.enableTraceUserView = YES;
    rumConfig.deviceMetricsMonitorType = FTDeviceMetricsMonitorAll;
    rumConfig.monitorFrequency = FTMonitorFrequencyRare;
    rumConfig.enableTraceUserAction = YES;
    rumConfig.enableTraceUserResource = YES;
    rumConfig.enableTrackAppFreeze = YES;
    rumConfig.enableTrackAppCrash = YES;
    rumConfig.enableTrackAppANR = YES;
    rumConfig.errorMonitorType = FTErrorMonitorAll;
    [[FTMobileAgent sharedInstance] startRumWithConfigOptions:rumConfig];

    let rumConfig = FTRumConfig(appid: appid)
    rumConfig.enableTraceUserView = true
    rumConfig.deviceMetricsMonitorType = .all
    rumConfig.monitorFrequency = .rare
    rumConfig.enableTraceUserAction = true
    rumConfig.enableTraceUserResource = true
    rumConfig.enableTrackAppFreeze = true
    rumConfig.enableTrackAppCrash = true
    rumConfig.enableTrackAppANR = true
    rumConfig.errorMonitorType = .all
    FTMobileAgent.sharedInstance().startRum(withConfigOptions: rumConfig)

    //Enable logger
    FTLoggerConfig *loggerConfig = [[FTLoggerConfig alloc]init];
    loggerConfig.enableCustomLog = YES;
    loggerConfig.enableLinkRumData = YES;
    loggerConfig.logLevelFilter = @[@(FTStatusError),@(FTStatusCritical)];
    loggerConfig.discardType = FTDiscardOldest;
    [[FTMobileAgent sharedInstance] startLoggerWithConfigOptions:loggerConfig];

    let loggerConfig = FTLoggerConfig()
    loggerConfig.enableCustomLog = true
    loggerConfig.enableLinkRumData = true
    loggerConfig.logLevelFilter = [NSNumber(value: FTLogStatus.statusError.rawValue),NSNumber(value: FTLogStatus.statusCritical.rawValue)] // loggerConfig.logLevelFilter = [2,3]
    loggerConfig.discardType = .discardOldest
    FTMobileAgent.sharedInstance().startLogger(withConfigOptions: loggerConfig)

   //Enable trace
   FTTraceConfig *traceConfig = [[FTTraceConfig alloc]init];
   traceConfig.enableLinkRumData = YES;
     traceConfig.enableAutoTrace = YES;
   traceConfig.networkTraceType = FTNetworkTraceTypeDDtrace;
   [[FTMobileAgent sharedInstance] startTraceWithConfigOptions:traceConfig];

   let traceConfig = FTTraceConfig.init()
   traceConfig.enableLinkRumData = true
   traceConfig.enableAutoTrace = true
   FTMobileAgent.sharedInstance().startTrace(withConfigOptions: traceConfig)

/// Create page
///
/// Call before the `-startViewWithName` method. This method records the page load time. If the load time cannot be obtained, this method can be omitted.
/// - Parameters:
///  - viewName: Page name
///  - loadTime: Page load time (nanoseconds)
-(void)onCreateView:(NSString *)viewName loadTime:(NSNumber *)loadTime;

/// Enter page
/// - Parameters:
///  - viewName: Page name
///  - property: Event custom attributes (optional)
-(void)startViewWithName:(NSString *)viewName property:(nullable NSDictionary *)property;

/// Leave page
/// - Parameter property: Event custom attributes (optional)
-(void)stopViewWithProperty:(nullable NSDictionary *)property;

/// Create page
///
/// Call before the `-startViewWithName` method. This method records the page load time. If the load time cannot be obtained, this method can be omitted.
/// - Parameters:
///  - viewName: Page name
///  - loadTime: Page load time (ns)
open func onCreateView(_ viewName: String, loadTime: NSNumber)

/// Enter page
/// - Parameters:
///  - viewName: Page name
///  - property: Event custom attributes (optional)
open func startView(withName viewName: String, property: [AnyHashable : Any]?)

/// Leave page
/// - Parameter property: Event custom attributes (optional)
open func stopView(withProperty property: [AnyHashable : Any]?)

- (void)viewDidAppear:(BOOL)animated{
  [super viewDidAppear:animated];
  // Scene 1:
  [[FTExternalDataManager sharedManager] startViewWithName:@"TestVC"];  

  // Scene 2: Dynamic parameters
  [[FTExternalDataManager sharedManager] startViewWithName:@"TestVC" property:@{@"custom_key":@"custom_value"}];  
}
-(void)viewDidDisappear:(BOOL)animated{
  [super viewDidDisappear:animated];
  // Scene 1:
  [[FTExternalDataManager sharedManager] stopView];  

  // Scene 2: Dynamic parameters
  [[FTExternalDataManager sharedManager] stopViewWithProperty:@{@"custom_key":@"custom_value"}];
}

override func viewDidAppear(_ animated: Bool) {
    super.viewDidAppear(animated)
    // Scene 1:
    FTExternalDataManager.shared().startView(withName: "TestVC")
    // Scene 2: Dynamic parameters
    FTExternalDataManager.shared().startView(withName: "TestVC",property: ["custom_key":"custom_value"])
}
override func viewDidDisappear(_ animated: Bool) {
    super.viewDidDisappear(animated)
    // Scene 1:
    FTExternalDataManager.shared().stopView()
    // Scene 2: Dynamic parameters
    FTExternalDataManager.shared().stopView(withProperty: ["custom_key":"custom_value"])
}

/// Start RUM Action.
///
/// RUM binds the possible triggering Resource, Error, LongTask events of this Action. Avoid adding multiple times within 0.1 seconds. Only one Action is associated with the same View at the same time. New Actions will be discarded if the previous Action has not ended.
/// Adding Action with `addAction:actionType:property` method does not affect each other.
///
/// - Parameters:
///   - actionName: Event name
///   - actionType: Event type
///   - property: Event custom attributes (optional)
- (void)startAction:(NSString *)actionName actionType:(NSString *)actionType property:(nullable NSDictionary *)property;

/// Add Action event. No duration, no discard logic
///
/// Adding Action with `startAction:actionType:property:` method does not affect each other.
/// - Parameters:
///   - actionName: Event name
///   - actionType: Event type
///   - property: Event custom attributes (optional)
- (void)addAction:(NSString *)actionName actionType:(NSString *)actionType property:(nullable NSDictionary *)property;

/// Start RUM Action.
///
/// RUM binds the possible triggering Resource, Error, LongTask events of this Action. Avoid adding multiple times within 0.1 seconds. Only one Action is associated with the same View at the same time. New Actions will be discarded if the previous Action has not ended.
/// Adding Action with `addAction:actionType:property` method does not affect each other.
///
/// - Parameters:
///   - actionName: Event name
///   - actionType: Event type
///   - property: Event custom attributes (optional)
open func startAction(_ actionName: String, actionType: String, property: [AnyHashable : Any]?)

/// Add Action event. No duration, no discard logic
///
/// Adding Action with `startAction:actionType:property:` method does not affect each other.
/// - Parameters:
///   - actionName: Event name
///   - actionType: Event type
///   - property: Event custom attributes (optional)
open func addAction(_ actionName: String, actionType: String, property: [AnyHashable : Any]?)

// startAction
[[FTExternalDataManager sharedManager] startAction:@"action" actionType:@"click" property:@{@"action_property":@"testActionProperty1"}];
// addAction
[[FTExternalDataManager sharedManager] addAction:@"action" actionType:@"click" property:@{@"action_property":@"testActionProperty1"}];

// startAction
FTExternalDataManager.shared().startAction("custom_action", actionType: "click",property: nil)
// addAction
FTExternalDataManager.shared().addAction("custom_action", actionType: "click",property: nil)

/// Add Error event
/// - Parameters:
///   - type: error type
///   - message: Error message
///   - stack: Stack information
///   - property: Event custom attributes (optional)
- (void)addErrorWithType:(NSString *)type message:(NSString *)message stack:(NSString *)stack property:(nullable NSDictionary *)property;

/// Add Error event
/// - Parameters:
///   - type: error type
///   - state: Program running state
///   - message: Error message
///   - stack: Stack information
///   - property: Event custom attributes (optional)
- (void)addErrorWithType:(NSString *)type state:(FTAppState)state  message:(NSString *)message stack:(NSString *)stack property:(nullable NSDictionary *)property;

/// Add Error event
/// - Parameters:
///   - type: error type
///   - message: Error message
///   - stack: Stack information
///   - property: Event custom attributes (optional)
open func addError(withType: String, message: String, stack: String, property: [AnyHashable : Any]?)

/// Add Error event
/// - Parameters:
///   - type: error type
///   - state: Program running state
///   - message: Error message
///   - stack: Stack information
///   - property: Event custom attributes (optional)
open func addError(withType type: String, state: FTAppState, message: String, stack: String, property: [AnyHashable : Any]?)

// Scene 1
[[FTExternalDataManager sharedManager] addErrorWithType:@"type" message:@"message" stack:@"stack"];
// Scene 2: Dynamic parameters
[[FTExternalDataManager sharedManager] addErrorWithType:@"ios_crash" message:@"crash_message" stack:@"crash_stack" property:@{@"custom_key":@"custom_value"}];
// Scene 3: Dynamic parameters
[[FTExternalDataManager sharedManager] addErrorWithType:@"ios_crash" state:FTAppStateUnknown message:@"crash_message" stack:@"crash_stack" property:@{@"custom_key":@"custom_value"}];

// Scene 1
FTExternalDataManager.shared().addError(withType: "custom_type", message: "custom_message", stack: "custom_stack")
// Scene 2: Dynamic parameters
FTExternalDataManager.shared().addError(withType: "custom_type", message: "custom_message", stack: "custom_stack",property: ["custom_key":"custom_value"])
// Scene 3: Dynamic parameters       
FTExternalDataManager.shared().addError(withType: "custom_type", state: .unknown, message: "custom_message", stack: "custom_stack", property: ["custom_key":"custom_value"])

/// Add freeze event
/// - Parameters:
///   - stack: Freeze stack
///   - duration: Freeze duration (nanoseconds)
///   - property: Event custom attributes (optional)
- (void)addLongTaskWithStack:(NSString *)stack duration:(NSNumber *)duration property:(nullable NSDictionary *)property;

/// Add freeze event
/// - Parameters:
///   - stack: Freeze stack
///   - duration: Freeze duration (nanoseconds)
///   - property: Event custom attributes (optional)
func addLongTask(withStack: String, duration: NSNumber, property: [AnyHashable : Any]?)

// Scene 1
[[FTExternalDataManager sharedManager] addLongTaskWithStack:@"stack string" duration:@1000000000];
// Scene 2: Dynamic parameters
[[FTExternalDataManager sharedManager] addLongTaskWithStack:@"stack string" duration:@1000000000 property:@{@"custom_key":@"custom_value"}];

// Scene 1
FTExternalDataManager.shared().addLongTask(withStack: "stack string", duration: 1000000000)
// Scene 2: Dynamic parameters
FTExternalDataManager.shared().addLongTask(withStack: "stack string", duration: 1000000000 ,property: [["custom_key":"custom_value"]])

/// HTTP request start
/// - Parameters:
///   - key: Request identifier
///   - property: Event custom attributes (optional)
- (void)startResourceWithKey:(NSString *)key property:(nullable NSDictionary *)property;

/// HTTP Add request data
///
/// - Parameters:
///   - key: Request identifier
///   - metrics: Request related performance attributes
///   - content: Request related data
- (void)addResourceWithKey:(NSString *)key metrics:(nullable FTResourceMetricsModel *)metrics content:(FTResourceContentModel *)content;

/// HTTP request end
/// - Parameters:
///   - key: Request identifier
///   - property: Event custom attributes (optional)
- (void)stopResourceWithKey:(NSString *)key property:(nullable NSDictionary *)property;

/// HTTP request start
/// - Parameters:
///   - key: Request identifier
///   - property: Event custom attributes (optional)
open func startResource(withKey key: String, property: [AnyHashable : Any]?)

/// HTTP request end
/// - Parameters:
///   - key: Request identifier
///   - property: Event custom attributes (optional)
open func stopResource(withKey key: String, property: [AnyHashable : Any]?)

/// HTTP Add request data
///
/// - Parameters:
///   - key: Request identifier
///   - metrics: Request related performance attributes
///   - content: Request related data
open func addResource(withKey key: String, metrics: FTResourceMetricsModel?, content: FTResourceContentModel)

// Step 1: Before the request starts
[[FTExternalDataManager sharedManager] startResourceWithKey:key];

// Step 2: Request completed
[[FTExternalDataManager sharedManager] stopResourceWithKey:key];

// Step 3: Concatenate Resource data
// FTResourceContentModel Data
FTResourceContentModel *content = [[FTResourceContentModel alloc]init];
content.httpMethod = request.HTTPMethod;
content.requestHeader = request.allHTTPHeaderFields;
content.responseHeader = httpResponse.allHeaderFields;
content.httpStatusCode = httpResponse.statusCode;
content.responseBody = responseBody;
// ios native
content.error = error;

// If you can get the time data for each stage 
// FTResourceMetricsModel
// Get NSURLSessionTaskMetrics data directly using FTResourceMetricsModel's initializer for ios native
FTResourceMetricsModel *metricsModel = [[FTResourceMetricsModel alloc]initWithTaskMetrics:metrics];

// Other platforms All time data in nanoseconds
FTResourceMetricsModel *metricsModel = [[FTResourceMetricsModel alloc]init];

// Step 4: Add resource, if no time data metrics pass nil
[[FTExternalDataManager sharedManager] addResourceWithKey:key metrics:metricsModel content:content];

// Step 1: Before the request starts
FTExternalDataManager.shared().startResource(withKey: key)

// Step 2: Request completed
FTExternalDataManager.shared().stopResource(withKey: resource.key)

// Step 3: ① Concatenate Resource data
let contentModel = FTResourceContentModel(request: task.currentRequest!, response: task.response as? HTTPURLResponse, data: resource.data, error: error)

// ② If you can get the time data for each stage 
// FTResourceMetricsModel
// Get NSURLSessionTaskMetrics data directly using FTResourceMetricsModel's initializer for ios native
var metricsModel:FTResourceMetricsModel?
if let metrics = resource.metrics {
   metricsModel = FTResourceMetricsModel(taskMetrics:metrics)
}
// Other platforms All time data in nanoseconds
metricsModel = FTResourceMetricsModel()
...

// Step 4: Add resource, if no time data metrics pass nil
FTExternalDataManager.shared().addResource(withKey: resource.key, metrics: metricsModel, content: contentModel)

//
//  FTLogger.h
//  FTMobileSDK

/// Add custom info type log
/// - Parameters:
///   - content: Log content
///   - property: Custom attributes (optional)
-(void)info:(NSString *)content property:(nullable NSDictionary *)property;

/// Add custom warning type log
/// - Parameters:
///   - content: Log content
///   - property: Custom attributes (optional)
-(void)warning:(NSString *)content property:(nullable NSDictionary *)property;

/// Add custom error type log
/// - Parameters:
///   - content: Log content
///   - property: Custom attributes (optional)
-(void)error:(NSString *)content  property:(nullable NSDictionary *)property;

/// Add custom critical type log
/// - Parameters:
///   - content: Log content
///   - property: Custom attributes (optional)
-(void)critical:(NSString *)content property:(nullable NSDictionary *)property;

/// Add custom ok type log
/// - Parameters:
///   - content: Log content
///   - property: Custom attributes (optional)
-(void)ok:(NSString *)content property:(nullable NSDictionary *)property;

open class FTLogger : NSObject, FTLoggerProtocol {}
public protocol FTLoggerProtocol : NSObjectProtocol {
/// Add custom info type log
/// - Parameters:
///   - content: Log content
///   - property: Custom attributes (optional)
optional func info(_ content: String, property: [AnyHashable : Any]?)

/// Add custom warning type log
/// - Parameters:
///   - content: Log content
///   - property: Custom attributes (optional)
optional func warning(_ content: String, property: [AnyHashable : Any]?)

/// Add custom error type log
/// - Parameters:
///   - content: Log content
///   - property: Custom attributes (optional)
optional func error(_ content: String, property: [AnyHashable : Any]?)

/// Add custom critical type log
/// - Parameters:
///   - content: Log content
///   - property: Custom attributes (optional)
optional func critical(_ content: String, property: [AnyHashable : Any]?)

/// Add custom ok type log
/// - Parameters:
///   - content: Log content
///   - property: Custom attributes (optional)
optional func ok(_ content: String, property: [AnyHashable : Any]?)
}

/// Event level and status, default: FTStatusInfo
typedef NS_ENUM(NSInteger, FTLogStatus) {
    /// Info
    FTStatusInfo         = 0,
    /// Warning
    FTStatusWarning,
    /// Error
    FTStatusError,
    /// Critical
    FTStatusCritical,
    /// Ok
    FTStatusOk,
};

/// Event level and status, default: FTStatusInfo
public enum FTLogStatus : Int, @unchecked Sendable {
    /// Info
    case statusInfo = 0
    /// Warning
    case statusWarning = 1
    /// Error
    case statusError = 2
    /// Critical
    case statusCritical = 3
    /// Ok
    case statusOk = 4
}

// If the SDK is not initialized successfully, adding custom logs will fail
[[FTLogger sharedInstance] info:@"test" property:@{@"custom_key":@"custom_value"}];

// If the SDK is not initialized successfully, adding custom logs will fail
FTLogger.shared().info("contentStr", property: ["custom_key":"custom_value"])

NSString *key = [[NSUUID UUID]UUIDString];
NSURL *url = [NSURL URLWithString:@"http://www.baidu.com"];
// Manual operation required: Get traceHeader before the request and add it to the request header
NSDictionary *traceHeader = [[FTTraceManager sharedInstance] getTraceHeaderWithKey:key url:url];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
if (traceHeader && traceHeader.allKeys.count>0) {
    [traceHeader enumerateKeysAndObjectsUsingBlock:^(id field, id value, BOOL * __unused stop) {
        [request setValue:value forHTTPHeaderField:field];
    }];
}
NSURLSession *session=[NSURLSession sessionWithConfiguration:[NSURLSessionConfiguration defaultSessionConfiguration] delegate:self delegateQueue:[NSOperationQueue mainQueue]];

NSURLSessionTask *task = [session dataTaskWithRequest:request completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) {
   // Your code
}];

[task resume];

let url:URL = NSURL.init(string: "https://www.baidu.com")! as URL
if let traceHeader = FTExternalDataManager.shared().getTraceHeader(withKey: NSUUID().uuidString, url: url) {
     let request = NSMutableURLRequest(url: url)
     // Manual operation required: Get traceHeader before the request and add it to the request header
     for (a,b) in traceHeader {
         request.setValue(b as? String, forHTTPHeaderField: a as! String)
     }
     let task = URLSession.shared.dataTask(with: request as URLRequest) {  data,  response,  error in
        // Your code
     }
     task.resume()
}

id<NSURLSessionDelegate> delegate = [[FTURLSessionDelegate alloc]init];
// Add custom RUM resource attributes, it's recommended to add a project abbreviation prefix to tag names, such as `df_tag_name`.
delegate.provider = ^NSDictionary * _Nullable(NSURLRequest *request, NSURLResponse *response, NSData *data, NSError *error) {
                NSString *body = [[NSString alloc] initWithData:request.HTTPBody encoding:NSUTF8StringEncoding];
                return @{@"df_requestbody":body};
            };
// Supports custom trace, returns TraceContext upon confirmation, returns nil otherwise
delegate.traceInterceptor = ^FTTraceContext * _Nullable(NSURLRequest *request) {
        FTTraceContext *context = [FTTraceContext new];
        context.traceHeader = @{@"trace_key":@"trace_value"};
        context.traceId = @"trace_id";
        context.spanId = @"span_id";
        return context;
    };            
NSURLSession *session = [NSURLSession sessionWithConfiguration:[NSURLSessionConfiguration defaultSessionConfiguration] delegate:delegate delegateQueue:nil];

let delegate = FTURLSessionDelegate.init()
// Add custom RUM resource attributes, it's recommended to add a project abbreviation prefix to tag names, such as `df_tag_name`.
delegate.provider = { request,response,data,error in
            var extraData:Dictionary<String, Any> = Dictionary()
            if let data = data,let requestBody = String(data: data, encoding: .utf8) {
                extraData["df_requestBody"] = requestBody
            }
            if let error = error {
                extraData["df_error"] = error.localizedDescription
            }
            return extraData
        }
// Supports custom trace, returns TraceContext upon confirmation, returns nil otherwise  
delegate.traceInterceptor = { request in
            let traceContext = FTTraceContext()
            traceContext.traceHeader = ["trace_key":"trace_value"]
            traceContext.spanId = "spanId"
            traceContext.traceId = "traceId"
            return traceContext
        }         
let session =  URLSession.init(configuration: URLSessionConfiguration.default, delegate:delegate 
, delegateQueue: nil)

@interface InstrumentationInheritClass:FTURLSessionDelegate
@property (nonatomic, strong) NSURLSession *session;
@end
@implementation InstrumentationInheritClass
-(instancetype)init{
    self = [super init];
    if(self){
        _session = [NSURLSession sessionWithConfiguration:[NSURLSessionConfiguration defaultSessionConfiguration] delegate:self delegateQueue:nil];
        // Add custom RUM resource attributes, it's recommended to add a project abbreviation prefix to tag names, such as `df_tag_name`.
        self.provider = ^NSDictionary * _Nullable(NSURLRequest *request, NSURLResponse *response, NSData *data, NSError *error) {
        NSString *body = [[NSString alloc] initWithData:request.HTTPBody encoding:NSUTF8StringEncoding];
        return @{@"df_requestbody":body};
    };
        // Supports custom trace, returns TraceContext upon confirmation, returns nil otherwise
       self.traceInterceptor = ^FTTraceContext * _Nullable(NSURLRequest *request) {
        FTTraceContext *context = [FTTraceContext new];
        context.traceHeader = @{@"trace_key":@"trace_value"};
        context.traceId = @"trace_id";
        context.spanId = @"span_id";
        return context;
       }; 
    }
    return self;
}
-(void)URLSession:(NSURLSession *)session task:(NSURLSessionTask *)task didFinishCollectingMetrics:(NSURLSessionTaskMetrics *)metrics{
    // Make sure to call the parent method
    [super URLSession:session task:task didFinishCollectingMetrics:metrics];
    // Your own logic
    // ......
}
@end

class InheritHttpEngine:FTURLSessionDelegate {
    var session:URLSession?
    override init(){
        session = nil
        super.init()
        let configuration = URLSessionConfiguration.default
        configuration.timeoutIntervalForRequest = 30
        session = URLSession.init(configuration: configuration, delegate:self, delegateQueue: nil)
        override init() {
        super.init()
        // Add custom RUM resource attributes, it's recommended to add a project abbreviation prefix to tag names, such as `df_tag_name`.
        provider = { request,response,data,error in
            var extraData:Dictionary<String, Any> = Dictionary()
            if let data = data,let requestBody = String(data: data, encoding: .utf8) {
                extraData["df_requestBody"] = requestBody
            }
            if let error = error {
                extraData["df_error"] = error.localizedDescription
            }
            return extraData
        }
        // Supports custom trace, returns TraceContext upon confirmation, returns nil otherwise
        traceInterceptor = { request in
            let traceContext = FTTraceContext()
            traceContext.traceHeader = ["trace_key":"trace_value"]
            traceContext.spanId = "spanId"
            traceContext.traceId = "traceId"
            return traceContext
        }
    }
    }

    override func urlSession(_ session: URLSession, task: URLSessionTask, didFinishCollecting metrics: URLSessionTaskMetrics) {
        // Make sure to call the parent method
        super.urlSession(session, task: task, didFinishCollecting: metrics)
        // User's own logic
        // ......
    }
}

@interface UserURLSessionDelegateClass:NSObject<NSURLSessionDataDelegate,FTURLSessionDelegateProviding>
@end
@implementation UserURLSessionDelegateClass
@synthesize ftURLSessionDelegate = _ftURLSessionDelegate;

- (nonnull FTURLSessionDelegate *)ftURLSessionDelegate {
    if(!_ftURLSessionDelegate){
        _ftURLSessionDelegate = [[FTURLSessionDelegate alloc]init];
         // Add custom RUM resource attributes, it's recommended to add a project abbreviation prefix to tag names, such as `df_tag_name`.
        _ftURLSessionDelegate.provider =  ^NSDictionary * _Nullable(NSURLRequest *request, NSURLResponse *response, NSData *data, NSError *error) {
                NSString *body = [[NSString alloc] initWithData:request.HTTPBody encoding:NSUTF8StringEncoding];
                return @{@"df_requestbody":body};
            };
          // Supports custom trace, returns TraceContext upon confirmation, returns nil otherwise
        _ftURLSessionDelegate.requestInterceptor = ^NSURLRequest * _Nonnull(NSURLRequest * _Nonnull request) {
            NSDictionary *traceHeader = [[FTExternalDataManager sharedManager] getTraceHeaderWithUrl:request.URL];
            NSMutableURLRequest *newRequest = [request mutableCopy];
            if(traceHeader){
                for (NSString *key in traceHeader.allKeys) {
                    [newRequest setValue:traceHeader[key] forHTTPHeaderField:key];
                }
            }
            return newRequest;
        }; 
    }
    return _ftURLSessionDelegate;
}
- (void)URLSession:(NSURLSession *)session dataTask:(NSURLSessionDataTask *)dataTask didReceiveData:(NSData *)data{
    [self.ftURLSessionDelegate URLSession:session dataTask:dataTask didReceiveData:data];
}
- (void)URLSession:(NSURLSession *)session task:(NSURLSessionTask *)task didCompleteWithError:(NSError *)error{
    [self.ftURLSessionDelegate URLSession:session task:task didCompleteWithError:error];
}
-(void)URLSession:(NSURLSession *)session task:(NSURLSessionTask *)task didFinishCollectingMetrics:(NSURLSessionTaskMetrics *)metrics{
    [self.ftURLSessionDelegate URLSession:session task:task didFinishCollectingMetrics:metrics];
}
@end

class HttpEngine:NSObject,URLSessionDataDelegate,FTURLSessionDelegateProviding {
    var ftURLSessionDelegate: FTURLSessionDelegate = FTURLSessionDelegate()
    var session:URLSession?

    override init(){
        session = nil
        super.init()
        let configuration = URLSessionConfiguration.default
        configuration.timeoutIntervalForRequest = 30
        session = URLSession.init(configuration: configuration, delegate:self, delegateQueue: nil)
        // Add custom RUM resource attributes, it's recommended to add a project abbreviation prefix to tag names, such as `df_tag_name`.
        ftURLSessionDelegate.provider = { request,response,data,error in
            var extraData:Dictionary<String, Any> = Dictionary()
            if let data = data,let requestBody = String(data: data, encoding: .utf8) {
                extraData["df_requestBody"] = requestBody
            }
            if let error = error {
                extraData["df_error"] = error.localizedDescription
            }
            return extraData
        }
        // Supports custom trace, returns TraceContext upon confirmation, returns nil otherwise
        ftURLSessionDelegate.traceInterceptor = { request in
            let traceContext = FTTraceContext()
            traceContext.traceHeader = ["trace_key":"trace_value"]
            traceContext.spanId = "spanId"
            traceContext.traceId = "traceId"
            return traceContext
        }
    }
    // Below methods must be implemented
    func urlSession(_ session: URLSession, dataTask: URLSessionDataTask, didReceive data: Data) {
        ftURLSessionDelegate.urlSession(session, dataTask: dataTask, didReceive: data)
    }

    func urlSession(_ session: URLSession, task: URLSessionTask, didFinishCollecting metrics: URLSessionTaskMetrics) {
        ftURLSessionDelegate.urlSession(session, task: task, didFinishCollecting: metrics)
    }

    func urlSession(_ session: URLSession, task: URLSessionTask, didCompleteWithError error: Error?) {
        ftURLSessionDelegate.urlSession(session, task: task, didCompleteWithError: error)
    }
}

/// Bind user information
///
/// - Parameters:
///   - Id:  User ID
///   - userName: User name (optional)
///   - userEmail: User email (optional)
///   - extra: Additional user information (optional)
- (void)bindUserWithUserID:(NSString *)Id userName:(nullable NSString *)userName userEmail:(nullable NSString *)userEmail extra:(nullable NSDictionary *)extra;

/// Unbind current user
- (void)unbindUser;

/// Bind user information
///
/// - Parameters:
///   - Id:  User ID
///   - userName: User name (optional)
///   - userEmail: User email (optional)
///   - extra: Additional user information (optional)
open func bindUser(withUserID Id: String, userName: String?, userEmail: String?, extra: [AnyHashable : Any]?)

/// Unbind current user
open func unbindUser()

// Call this method after successful user login to bind user information
[[FTMobileAgent sharedInstance] bindUserWithUserID:USERID userName:USERNAME userEmail:USEREMAIL extra:@{EXTRA_KEY:EXTRA_VALUE}];

// Call this method after user logout to unbind user information
[[FTMobileAgent sharedInstance] unbindUser];

// Call this method after successful user login to bind user information
FTMobileAgent.sharedInstance().bindUser(withUserID: USERID, userName: USERNAME, userEmail: USEREMAIL,extra:[EXTRA_KEY:EXTRA_VALUE])

// Call this method after user logout to unbind user information
FTMobileAgent.sharedInstance().unbindUser()

/// Close running objects within the SDK
+ (void)shutDown;

/// Close running objects within the SDK
open class func shutDown()

// If dynamically changing the SDK configuration, need to close first to avoid generating erroneous data
[FTMobileAgent  shutDown];

// If dynamically changing the SDK configuration, need to close first to avoid generating erroneous data
FTMobileAgent.shutDown()

/// Clear all data that has not yet been uploaded to the server
+ (void)clearAllData;

/// Clear all data that has not yet been uploaded to the server
open class func clearAllData()

[FTMobileAgent clearAllData];

FTMobileAgent.clearAllData()

/// Actively synchronize data
- (void)flushSyncData;

/// Actively synchronize data
func flushSyncData()

[[FTMobileAgent sharedInstance] flushSyncData];

// If dynamically changing the SDK configuration, need to close first to avoid generating erroneous data
FTMobileAgent.sharedInstance().flushSyncData()

/// Add SDK global tag, applies to RUM, Log data
/// - Parameter context: Custom data
+ (void)appendGlobalContext:(NSDictionary <NSString*,id>*)context;

/// Add RUM custom tag, applies to RUM data
/// - Parameter context: Custom data
+ (void)appendRUMGlobalContext:(NSDictionary <NSString*,id>*)context;

/// Add Log global tag, applies to Log data
/// - Parameter context: Custom data
+ (void)appendLogGlobalContext:(NSDictionary <NSString*,id>*)context;

/// Add SDK global tag, applies to RUM, Log data
/// - Parameter context: Custom data
open class func appendGlobalContext(_ context: [String : Any])

/// Add RUM custom tag, applies to RUM data
/// - Parameter context: Custom data
open class func appendRUMGlobalContext(_ context: [String : Any])

/// Add Log global tag, applies to Log data
/// - Parameter context: Custom data
open class func appendLogGlobalContext(_ context: [String : Any])

[FTMobileAgent  appendGlobalContext:@{@"global_key":@"global_value"}];
[FTMobileAgent  appendLogGlobalContext:@{@"log_key":@"log_value"}];
[FTMobileAgent  appendRUMGlobalContext:@{@"rum_key":@"rum_value"}];

let globalContext = ["global_key":"global_value"]
FTMobileAgent.appendGlobalContext(globalContext)
let rumGlobalContext = = ["rum_key":"rum_value"]
FTMobileAgent.appendRUMGlobalContext(rumGlobalContext)
let logGlobalContext = = ["log_key":"log_value"]
FTMobileAgent.appendLogGlobalContext(logGlobalContext)

// Main project
 FTMobileConfig *config = [[FTMobileConfig alloc]initWithMetricsUrl:url];
 config.enableSDKDebugLog = YES;
 config.groupIdentifiers = @[@"group.com.ft.widget.demo"]; 

let config = FTMobileConfig.init(metricsUrl: url)
config.enableSDKDebugLog = true
config.groupIdentifiers = ["group.com.ft.widget.demo"]

// Call in the main project
/// Track cached data in App Extension groupIdentifier
/// - Parameters:
///   - groupIdentifier: groupIdentifier
///   - completion: Callback after tracking is complete
- (void)trackEventFromExtensionWithGroupIdentifier:(NSString *)groupIdentifier completion:(nullable void (^)(NSString *groupIdentifier, NSArray *events)) completion;

/// Track cached data in App Extension groupIdentifier
/// - Parameters:
///   - groupIdentifier: groupIdentifier
///   - completion: Callback after tracking is complete
open func trackEventFromExtension(withGroupIdentifier groupIdentifier: String, completion: ((String, [Any]) -> Void)? = nil)

// In the main project
-(void)applicationDidBecomeActive:(UIApplication *)application{
    [[FTMobileAgent sharedInstance] trackEventFromExtensionWithGroupIdentifier:@"group.identifier" completion:nil];
}

func applicationDidBecomeActive(_ application: UIApplication) {
   FTMobileAgent.sharedInstance().trackEventFromExtension(withGroupIdentifier: "group.identifier" )     
}