Crash inside iOSAgent file

[Pranit-Harekar]

Description: SwiftDog crashes when sending agent metrics. i.e. when its initialized like this Datadog.initialize_api(agent: true, default_tags: true). For now I am skipping agent: true, but it will be great if we can send agent metrics, it's really helpful.

Environment Info:

• Xcode 10.2
• Swift 4.2
• SwiftDog version 0.0.2

Backtrace:

* thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_INSTRUCTION (code=EXC_I386_INVOP, subcode=0x0)
  * frame #0: 0x000000010512e595 SwiftDog`DataUsageInfo.updateInfoByAdding(info=SwiftDog.DataUsageInfo @ 0x00007ffeeca33530, self=SwiftDog.DataUsageInfo @ 0x00007ffeeca33690) at IOSAgent.swift:18:22
    frame #1: 0x0000000105130e2f SwiftDog`static IOSAgent.getDataUsage(self=SwiftDog.IOSAgent) at IOSAgent.swift:71:27
    frame #2: 0x000000010512f342 SwiftDog`static IOSAgent.send_agent_metrics(self=SwiftDog.IOSAgent) at IOSAgent.swift:44:40
    frame #3: 0x00000001051267a2 SwiftDog`static Datadog.sendData(self=0x0000000105147e70) at Datadog.swift:18:22
    frame #4: 0x0000000105127018 SwiftDog`@objc static Datadog.sendData() at <compiler-generated>:0
    frame #5: 0x00000001087f3135 Foundation`__NSFireTimer + 83
    frame #6: 0x00000001096c53e4 CoreFoundation`__CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ + 20
    frame #7: 0x00000001096c4ff2 CoreFoundation`__CFRunLoopDoTimer + 1026
    frame #8: 0x00000001096c485a CoreFoundation`__CFRunLoopDoTimers + 266
    frame #9: 0x00000001096beefc CoreFoundation`__CFRunLoopRun + 2220
    frame #10: 0x00000001096be302 CoreFoundation`CFRunLoopRunSpecific + 626
    frame #11: 0x000000010ef802fe GraphicsServices`GSEventRunModal + 65
    frame #12: 0x0000000111995ba2 UIKitCore`UIApplicationMain + 140
    frame #13: 0x00000001032300cb SpringboardRetail`main at AppDelegate.swift:15:7
    frame #14: 0x000000010ae04541 libdyld.dylib`start + 1

Let me know if I can provide more details in order to help you debug this issue. Thanks!

[jaronoff97]

Thanks for raising this issue! Going to take a look! Right now though, I wouldn't advise using the agent in production, I found it more useful as a debugging tool in QA.

[Antalinka]

the same issue