Recipe Chain Error

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This question was closed Mar 30, 2018 at 05:56 PM by cmg for the following reason: The question is answered, right answer was accepted

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cmg asked · Mar 27, 2018 at 02:23 PM

Recipe Chain Error

I'm getting the following two errors. I've followed the documentation to a t and I can't get past the loading screen. These two errors keep popping up and I've tried everything to resolve them. Any ideas as to what the problem could be?

E/com.amazon.android.tv.tenfoot.ui.activities.SplashActivity: Service is unavailable. Please try again later.

E/ContentBrowser: Recipe chain failed:
                  java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String com.amazon.android.model.content.ContentContainer.getName()' on a null object reference
                      at com.amazon.android.contentbrowser.ContentLoader.lambda$getCategoriesObservable$2(ContentLoader.java:196)
                      at com.amazon.android.contentbrowser.ContentLoader$$Lambda$3.call(Unknown Source)
                      at rx.internal.operators.OperatorMap$1.onNext(OperatorMap.java:54)
                      at rx.observers.SerializedObserver.onNext(SerializedObserver.java:95)
                      at rx.observers.SerializedSubscriber.onNext(SerializedSubscriber.java:95)
                      at rx.internal.operators.OperatorConcat$ConcatInnerSubscriber.onNext(OperatorConcat.java:199)
                      at com.amazon.dynamicparser.DynamicParser$1.onRecipeCooked(DynamicParser.java:346)
                      at com.amazon.dynamicparser.DynamicParser.translateMapsToObjects(DynamicParser.java:613)
                      at com.amazon.dynamicparser.DynamicParser.lambda$cookRecipeObservable$0(DynamicParser.java:334)
                      at com.amazon.dynamicparser.DynamicParser$$Lambda$1.call(Unknown Source)
                      at rx.Observable.unsafeSubscribe(Observable.java:8098)
                      at rx.internal.operators.OperatorConcat$ConcatSubscriber.subscribeNext(OperatorConcat.java:172)
                      at rx.internal.operators.OperatorConcat$ConcatSubscriber.onNext(OperatorConcat.java:136)
                      at rx.internal.operators.OperatorConcat$ConcatSubscriber.onNext(OperatorConcat.java:79)
                      at rx.internal.operators.OperatorMap$1.onNext(OperatorMap.java:54)
                      at rx.internal.operators.OperatorMap$1.onNext(OperatorMap.java:54)
                      at com.amazon.dataloader.dataloadmanager.DataLoaderModule$1.onRecipeCooked(DataLoaderModule.java:88)
                      at com.amazon.dataloader.dataloadmanager.DataLoaderModule$3.onSuccess(DataLoaderModule.java:391)
                      at com.amazon.dataloader.datadownloader.ADataDownloader.loadData(ADataDownloader.java:52)
                      at com.amazon.dataloader.dataloadmanager.DataLoaderModule.loadDataFromSource(DataLoaderModule.java:433)
                      at com.amazon.dataloader.dataloadmanager.DataLoaderModule.access$500(DataLoaderModule.java:44)
                      at com.amazon.dataloader.dataloadmanager.DataLoaderModule$2.onSuccess(DataLoaderModule.java:324)
                      at com.amazon.dataloader.cacheManager.CacheManagerAdapter.loadData(CacheManagerAdapter.java:115)
                      at com.amazon.dataloader.dataloadmanager.DataLoaderModule.loadDataFromCache(DataLoaderModule.java:417)
                      at com.amazon.dataloader.dataloadmanager.DataLoaderModule.access$600(DataLoaderModule.java:44)
                      at com.amazon.dataloader.dataloadmanager.DataLoaderModule$LoadDataTask.loadData(DataLoaderModule.java:251)
                      at com.amazon.dataloader.dataloadmanager.DataLoaderModule.cookRecipe(DataLoaderModule.java:140)
                      at com.amazon.dataloader.dataloadmanager.DataLoaderModule.lambda$cookRecipeObservable$0(DataLoaderModule.java:73)
                      at com.amazon.dataloader.dataloadmanager.DataLoaderModule$$Lambda$1.call(Unknown Source)
                      at rx.Observable$2.call(Observable.java:162)
                      at rx.Observable$2.call(Observable.java:154)
                      at rx.Observable$2.call(Observable.java:162)
                      at rx.Observable$2.call(Observable.java:154)
                      at rx.Observable$2.call(Observable.java:162)
                      at rx.Observable$2.call(Observable.java:154)
                      at rx.Observable$2.call(Observable.java:162)
                      at rx.Observable$2.call(Observable.java:154)
                      at rx.Observable$2.call(Observable.java:162)
                      at rx.Observable$2.call(Observable.java:154)
                      at rx.Observable$2.call(Observable.java:162)
                      at rx.Observable$2.call(Observable.java:154)
                      at rx.Observable$2.call(Observable.java:162)
                      at rx.Observable$2.call(Observable.java:154)
                      at rx.Observable$2.call(Observable.java:162)
                      at rx.Observable$2.call(Observable.java:154)
                      at rx.Observable.unsafeSubscribe(Observable.java:8098)
                      at rx.internal.operators.OperatorConcat$ConcatSubscriber.subscribeNext(OperatorConcat.java:172)
                      at rx.internal.operators.OperatorConcat$ConcatSubscriber.onNext(OperatorConcat.java:136)
                      at rx.internal.operators.OperatorConcat$ConcatSubscriber.onNext(OperatorConcat.java:79)
                      at rx.internal.operators.OperatorMap$1.onNext(OperatorMap.java:54)
                      at rx.internal.operators.OperatorSubscribeOn$1$1$1.onNext(OperatorSubscribeOn.java:76)
                  	at rx.internal.operators.OnSub

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Answer 1 · 2018-03-29T17:29:31Z

NewUser-ff3148ae-8347-47a3-a9e4-8f012d59e59b answered · Mar 29, 2018 at 05:29 PM · ACCEPTED ANSWER

I don't know about your error in particular, but when I was playing around with the code, I found that it helped a lot to add a little debug output in the DynamicParser.java parseInput() method. In that file, I added the following around line 469 to output warnings with details about the recipe, and that helped me identify initial mistakes with my recipe:

Log.w("my_debug","input is " + input);
Log.w("my_debug", "recipe is " + recipe.getItemAsString(QUERY_TAG).toString());
Log.w("my_debug", "FORMAT_TAG is " + recipe.getItemAsString(FORMAT_TAG).toString());
Log.w("my_debug", "QUERY_RESULT_TAG is " + recipe.getItemAsString(QUERY_RESULT_TAG).toString());

I'm sure you could do this and more with proper debugging, but I've always liked to output informational data when I'm trying to figure out what's going wrong.

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cmg · Mar 30, 2018 at 05:57 PM

Thanks, I figured it out!

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Recipe Chain Error

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