Analytics/SFAnalytics.h

   1 /*
   2  * Copyright (c) 2017 Apple Inc. All Rights Reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23
  24 #if __OBJC2__
  25 #ifndef SFAnalytics_h
  26 #define SFAnalytics_h
  27
  28 #import <Foundation/Foundation.h>
  29 #import "SFAnalyticsSampler.h"
  30 #import "SFAnalyticsMultiSampler.h"
  31 #import "SFAnalyticsActivityTracker.h"
  32
  33 // this sampling interval will cause the sampler to run only at data reporting time
  34 extern const NSTimeInterval SFAnalyticsSamplerIntervalOncePerReport;
  35
  36 @interface SFAnalytics : NSObject
  37
  38 + (instancetype)logger;
  39
  40 + (NSInteger)fuzzyDaysSinceDate:(NSDate*)date;
  41 + (void)addOSVersionToEvent:(NSMutableDictionary*)event;
  42
  43 // Log event-based metrics: create an event corresponding to some event in your feature
  44 // and call the appropriate method based on the successfulness of that event
  45 - (void)logSuccessForEventNamed:(NSString*)eventName;
  46 - (void)logHardFailureForEventNamed:(NSString*)eventName withAttributes:(NSDictionary*)attributes;
  47 - (void)logSoftFailureForEventNamed:(NSString*)eventName withAttributes:(NSDictionary*)attributes;
  48 // or just log an event if it is not failable
  49 - (void)noteEventNamed:(NSString*)eventName;
  50
  51 - (void)logResultForEvent:(NSString*)eventName hardFailure:(bool)hardFailure result:(NSError*)eventResultError;
  52
  53 // Track the state of a named value over time
  54 - (SFAnalyticsSampler*)addMetricSamplerForName:(NSString*)samplerName withTimeInterval:(NSTimeInterval)timeInterval block:(NSNumber* (^)(void))block;
  55 - (SFAnalyticsSampler*)existingMetricSamplerForName:(NSString*)samplerName;
  56 - (void)removeMetricSamplerForName:(NSString*)samplerName;
  57 // Same idea, but log multiple named values in a single block
  58 - (SFAnalyticsMultiSampler*)AddMultiSamplerForName:(NSString*)samplerName withTimeInterval:(NSTimeInterval)timeInterval block:(NSDictionary<NSString*, NSNumber*>* (^)(void))block;
  59 - (SFAnalyticsMultiSampler*)existingMultiSamplerForName:(NSString*)samplerName;
  60 - (void)removeMultiSamplerForName:(NSString*)samplerName;
  61
  62 // Log measurements of arbitrary things
  63 // System metrics measures how much time it takes to complete the action - possibly more in the future. The return value can be ignored if you only need to execute 1 block for your activity
  64 - (SFAnalyticsActivityTracker*)logSystemMetricsForActivityNamed:(NSString*)eventName withAction:(void (^)(void))action;
  65 - (void)logMetric:(NSNumber*)metric withName:(NSString*)metricName;
  66
  67
  68
  69 // --------------------------------
  70 // Things below are for subclasses
  71
  72 // Override to create a concrete logger instance
  73 @property (readonly, class) NSString* databasePath;
  74
  75 // Storing dates
  76 - (void)setDateProperty:(NSDate*)date forKey:(NSString*)key;
  77 - (NSDate*)datePropertyForKey:(NSString*)key;
  78
  79 // --------------------------------
  80 // Things below are for unit testing
  81
  82 - (void)removeState;    // removes DB object and any samplers
  83
  84 @end
  85
  86 #endif
  87 #endif