I'm trying to connect an existing AppSync API to my iOS app.
To perform this, I followed the instructions on this page: https://docs.amplify.aws/cli/graphql-transformer/codegen#ios-usage, but instead of performing:
amplify add api
amplify push
I added my existing AppSync API:
amplify add codegen --apiId XXXXXXXXXXXXXXX
amplify codegen
After running those commands, I added awsconfiguration.json and API.swift to my project.
After performing the setup, I initialized the AppSync client in the AppDelegate file:
import AWSAppSync
@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {
var appSyncClient: AWSAppSyncClient?
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
do {
// You can choose your database location if you wish, or use the default
let cacheConfiguration = try AWSAppSyncCacheConfiguration()
// AppSync configuration & client initialization
let appSyncConfig = try AWSAppSyncClientConfiguration(appSyncServiceConfig: AWSAppSyncServiceConfig(), cacheConfiguration: cacheConfiguration)
appSyncClient = try AWSAppSyncClient(appSyncConfig: appSyncConfig)
} catch {
print("Error initializing appsync client. \(error)")
}
}
}
It's worth mentioning that I'm using AWS SDK (for DynamoDB using Object Mapper) in my app (the previous SDK, not Amplify yet)
The problem is that when I'm running the app, it immediately crashes.
This is the log message that comes along with the crash:
*** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'The service configuration is `nil`. You need to configure `Info.plist` or set `defaultServiceConfiguration` before using this method.'
*** First throw call stack:
(
0 CoreFoundation 0x00007fff23c7127e __exceptionPreprocess + 350
1 libobjc.A.dylib 0x00007fff513fbb20 objc_exception_throw + 48
2 AWSDynamoDB 0x000000010be77baa __54+[AWSDynamoDBObjectMapper defaultDynamoDBObjectMapper]_block_invoke + 474
3 libdispatch.dylib 0x000000010cb04d48 _dispatch_client_callout + 8
4 libdispatch.dylib 0x000000010cb06297 _dispatch_once_callout + 66
5 AWSDynamoDB 0x000000010be779a4 +[AWSDynamoDBObjectMapper defaultDynamoDBObjectMapper] + 84
6 App 0x000000010a7d0f9c $s22App10GlobalVarsCACycfc + 140
7 App 0x000000010a7ca97c $s22App10GlobalVarsCACycfC + 60
8 App 0x000000010a7fd7e1 $s22App21LoadingViewControllerC5coderACSgSo7NSCoderC_tcfc + 113
9 App 0x000000010a7fd943 $s22App21LoadingViewControllerC5coderACSgSo7NSCoderC_tcfcTo + 51
10 UIKitCore 0x00007fff47cf7268 -[UIClassSwapper initWithCoder:] + 2427
11 UIFoundation 0x00007fff4753d872 UINibDecoderDecodeObjectForValue + 744
12 UIFoundation 0x00007fff4753db19 UINibDecoderDecodeObjectForValue + 1423
13 UIFoundation 0x00007fff4753d57d -[UINibDecoder decodeObjectForKey:] + 251
14 UIKitCore 0x00007fff47cf6531 -[NSCoder(UIIBDependencyInjectionInternal) _decodeObjectsAndTrackChildViewControllerIndexWithParent:forKey:] + 298
15 UIKitCore 0x00007fff47a0e65d -[UIViewController initWithCoder:] + 1419
16 UIKitCore 0x00007fff4795cc16 -[UINavigationController initWithCoder:] + 65
17 UIKitCore 0x00007fff47cf7268 -[UIClassSwapper initWithCoder:] + 2427
18 UIFoundation 0x00007fff4753d872 UINibDecoderDecodeObjectForValue + 744
19 UIFoundation 0x00007fff4753d57d -[UINibDecoder decodeObjectForKey:] + 251
20 UIKitCore 0x00007fff47cfb56f -[UIRuntimeConnection initWithCoder:] + 125
21 UIFoundation 0x00007fff4753d872 UINibDecoderDecodeObjectForValue + 744
22 UIFoundation 0x00007fff4753db19 UINibDecoderDecodeObjectForValue + 1423
23 UIFoundation 0x00007fff4753d57d -[UINibDecoder decodeObjectForKey:] + 251
24 UIKitCore 0x00007fff47cf6336 -[NSCoder(UIIBDependencyInjectionInternal) _decodeObjectsWithSourceSegueTemplate:creator:sender:forKey:] + 450
25 UIKitCore 0x00007fff47cf90a5 -[UINib instantiateWithOwner:options:] + 1145
26 UIKitCore 0x00007fff481f8f24 -[UIStoryboard __reallyInstantiateViewControllerWithIdentifier:creator:storyboardSegueTemplate:sender:] + 279
27 UIKitCore 0x00007fff481f8dcf -[UIStoryboard _instantiateViewControllerWithIdentifier:creator:storyboardSegueTemplate:sender:] + 97
28 UIKitCore 0x00007fff48091ebf -[UIApplication _loadMainStoryboardFileNamed:bundle:] + 167
29 UIKitCore 0x00007fff48092473 -[UIApplication _loadMainInterfaceFile] + 274
30 UIKitCore 0x00007fff48090dff -[UIApplication _runWithMainScene:transitionContext:completion:] + 964
31 UIKitCore 0x00007fff477c576d -[_UISceneLifecycleMultiplexer completeApplicationLaunchWithFBSScene:transitionContext:] + 122
32 UIKitCore 0x00007fff47cb44c1 _UIScenePerformActionsWithLifecycleActionMask + 83
33 UIKitCore 0x00007fff477c627f __101-[_UISceneLifecycleMultiplexer _evalTransitionToSettings:fromSettings:forceExit:withTransitionStore:]_block_invoke + 198
34 UIKitCore 0x00007fff477c5c8e -[_UISceneLifecycleMultiplexer _performBlock:withApplicationOfDeactivationReasons:fromReasons:] + 296
35 UIKitCore 0x00007fff477c60ac -[_UISceneLifecycleMultiplexer _evalTransitionToSettings:fromSettings:forceExit:withTransitionStore:] + 818
36 UIKitCore 0x00007fff477c5941 -[_UISceneLifecycleMultiplexer uiScene:transitionedFromState:withTransitionContext:] + 345
37 UIKitCore 0x00007fff477c9f3f __186-[_UIWindowSceneFBSSceneTransitionContextDrivenLifecycleSettingsDiffAction _performActionsForUIScene:withUpdatedFBSScene:settingsDiff:fromSettings:transitionContext:lifecycleActionType:]_block_invoke_2 + 178
38 UIKitCore 0x00007fff47bd8c83 +[BSAnimationSettings(UIKit) tryAnimatingWithSettings:actions:completion:] + 865
39 UIKitCore 0x00007fff47cd2dff _UISceneSettingsDiffActionPerformChangesWithTransitionContext + 240
40 UIKitCore 0x00007fff477c9c5a __186-[_UIWindowSceneFBSSceneTransitionContextDrivenLifecycleSettingsDiffAction _performActionsForUIScene:withUpdatedFBSScene:settingsDiff:fromSettings:transitionContext:lifecycleActionType:]_block_invoke + 153
41 UIKitCore 0x00007fff47cd2d02 _UISceneSettingsDiffActionPerformActionsWithDelayForTransitionContext + 84
42 UIKitCore 0x00007fff477c9ac8 -[_UIWindowSceneFBSSceneTransitionContextDrivenLifecycleSettingsDiffAction _performActionsForUIScene:withUpdatedFBSScene:settingsDiff:fromSettings:transitionContext:lifecycleActionType:] + 381
43 UIKitCore 0x00007fff476206e7 __64-[UIScene scene:didUpdateWithDiff:transitionContext:completion:]_block_invoke + 657
44 UIKitCore 0x00007fff4761f26c -[UIScene _emitSceneSettingsUpdateResponseForCompletion:afterSceneUpdateWork:] + 248
45 UIKitCore 0x00007fff47620411 -[UIScene scene:didUpdateWithDiff:transitionContext:completion:] + 210
46 UIKitCore 0x00007fff4808f599 -[UIApplication workspace:didCreateScene:withTransitionContext:completion:] + 535
47 UIKitCore 0x00007fff47bfa7f5 -[UIApplicationSceneClientAgent scene:didInitializeWithEvent:completion:] + 361
48 FrontBoardServices 0x00007fff365d6165 -[FBSSceneImpl _callOutQueue_agent_didCreateWithTransitionContext:completion:] + 442
49 FrontBoardServices 0x00007fff365fc4d8 __86-[FBSWorkspaceScenesClient sceneID:createWithParameters:transitionContext:completion:]_block_invoke.154 + 102
50 FrontBoardServices 0x00007fff365e0c45 -[FBSWorkspace _calloutQueue_executeCalloutFromSource:withBlock:] + 220
51 FrontBoardServices 0x00007fff365fc169 __86-[FBSWorkspaceScenesClient sceneID:createWithParameters:transitionContext:completion:]_block_invoke + 355
52 libdispatch.dylib 0x000000010cb04d48 _dispatch_client_callout + 8
53 libdispatch.dylib 0x000000010cb07cb9 _dispatch_block_invoke_direct + 300
54 FrontBoardServices 0x00007fff3662237e __FBSSERIALQUEUE_IS_CALLING_OUT_TO_A_BLOCK__ + 30
55 FrontBoardServices 0x00007fff3662206c -[FBSSerialQueue _queue_performNextIfPossible] + 441
56 FrontBoardServices 0x00007fff3662257b -[FBSSerialQueue _performNextFromRunLoopSource] + 22
57 CoreFoundation 0x00007fff23bd4471 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
58 CoreFoundation 0x00007fff23bd439c __CFRunLoopDoSource0 + 76
59 CoreFoundation 0x00007fff23bd3b74 __CFRunLoopDoSources0 + 180
60 CoreFoundation 0x00007fff23bce87f __CFRunLoopRun + 1263
61 CoreFoundation 0x00007fff23bce066 CFRunLoopRunSpecific + 438
62 GraphicsServices 0x00007fff384c0bb0 GSEventRunModal + 65
63 UIKitCore 0x00007fff48092d4d UIApplicationMain + 1621
64 App 0x000000010a841728 main + 72
65 libdyld.dylib 0x00007fff5227ec25 start + 1
66 ??? 0x0000000000000001 0x0 + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException
(lldb)
Apparently, because I'm using the old version of AWS SDK for iOS, I couldn't use both awsconfiguration.json file and the AWS section in Info.plist file.
In order to solve it, I removed the awsconfiguration.json file from Build Phases -> Copy Bundle Resources, and added the AppSync API details from that file to the Info.plist file:
<key>AWS</key>
<dict>
<key>AppSync</key>
<dict>
<key>Default</key>
<dict>
<key>ApiUrl</key>
<string>https://XXXXXXXXXXXXX.appsync-api.xx-xxxx-x.amazonaws.com/graphql</string>
<key>Region</key>
<string>xx-xxxx-x</string>
<key>AuthMode</key>
<string>API_KEY</string>
<key>ApiKey</key>
<string>XXXXXXXXXXXXX</string>
<key>ClientDatabasePrefix</key>
<string>XXXXXXXX_API_KEY
</dict>
</dict>
...
</dict>