How should I continue after handleErrorAsync inside a custom ApolloErrorInterceptor? about apollo-ios HOT 5 CLOSED

Sure thing @avielg. I've got a PR up at apollographql/apollo-ios-dev#336 to add that, thanks for the suggestion.

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Hi @avielg - when you receive an error like that it should be considered a terminal error re. the request so no you won't be able to continue from where the error was generated. You'd have to restart the request again.

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@calvincestari Yeap I think my confusion was due to thinking that the error interceptor is an array like the regular interceptors - thinking that there might be other error interceptor that should also "get their turn" to do something with the error, but since there can only be one - I just need to pass the request to the original caller by calling the completion and passing .failure(error) - which wasn't initially clear to me.

I wonder if it makes sense to have a small example showing this in the docs? Specifically where there are examples to the regular interceptors (https://www.apollographql.com/docs/ios/networking/request-pipeline/#example-interceptors), and the error interceptor is mentioned there, but without an example on usage?

Something like this perhaps?

class LoggerErrorInterceptor: ApolloErrorInterceptor {
    weak var errorLogger: MyErrorLogger?

    init(errorLogger: MyErrorLogger) {
        self.errorLogger = errorLogger
    }

    func handleErrorAsync<Operation: GraphQLOperation>(
        error: Error,
        chain: RequestChain,
        request: Apollo.HTTPRequest<Operation>,
        response: Apollo.HTTPResponse<Operation>?,
        completion: @escaping (Result<GraphQLResult<Operation.Data>, Error>) -> Void
    ) {
        errorLogger?.requestFailed(response?.httpResponse, withError: error)
        completion(.failure(error))
    }
}

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Amazing thanks!

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