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Handling network errors from an external API across an application


Handling network errors from an external API across an application

By : Eddy
Date : November 28 2020, 12:01 PM
wish of those help My app depends heavily on an external API (last.fm), for which it uses a python wrapper, pylast. , You can do something like this:
code :
attempts = 3
while attempts > 0:
    try:
        attempts = attempts - 1
        do_network_stuff
    except exception as e:  # those you wish to handle
        print(e)  # or more graceful handling


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Vim: Using an external command and handling errors

Vim: Using an external command and handling errors


By : hugovink
Date : March 29 2020, 07:55 AM
help you fix your problem There may be a better way to do this, but I got this rough draft working (see further below for equalprg). It basically remaps gq, overwriting it to print the error and then undo it.
code :
set formatprg=~/test.sh

nnoremap gq :setl opfunc=FormatPrg<cr>g@
fun! FormatPrg(...)
   silent exe "'[,']!".&formatprg
   if v:shell_error == 1
      let format_error = join(getline(line("'["), line("']")), "\n")
      undo
      echo format_error
   end
endfun
echo "error!!
alskdjf alskdf
alskdj flaskdjf" 1>&2
exit 1
set equalprg=~/test.sh    

nnoremap = :setl opfunc=EqualPrg<cr>g@
fun! EqualPrg(...)
   if &equalprg != ""
      silent exe "'[,']!".&equalprg
   else
      set indentexpr=
      exe "norm! `[=`]"
      set indentexpr=EqualPrg()
   endif
   if v:shell_error == 1
      let format_error = join(getline(line("'["), line("']")), "\n")
      undo
      echo format_error
   endif
endfun
Handling API errors vs Network errors

Handling API errors vs Network errors


By : William Morgan
Date : March 29 2020, 07:55 AM
will help you Why not always give them ExampleAppDomain as the domain of the error. In that ways there is no confusion. Most of the standard libraries do this - encapsulate all errors. Essentially, when you get the error back you need to wrap that with your domain in NSError. You can check for an acceptable statusCode AND content of the NSURLConnectionDelegate of the response. Also, instead of dealing with all the network codes yourself, why not use standard libraries like AFNetworking ?
Here is a code, but you have to check for acceptable codes/content based on XML/JSON. The following is an excerpt from AFNetworking.
code :
NSMutableDictionary *userInfo = [NSMutableDictionary dictionary];
[userInfo setValue:self.responseString forKey:NSLocalizedRecoverySuggestionErrorKey];
[userInfo setValue:[self.request URL] forKey:NSURLErrorFailingURLErrorKey];
[userInfo setValue:self.request forKey:ExampleAppDomainFailingURLRequestErrorKey];
[userInfo setValue:self.response forKey:ExampleAppDomainOperationFailingURLResponseErrorKey];


NSError *error = [[NSError alloc] initWithDomain:ExampleAppDomain code:NSURLErrorBadServerResponse userInfo:userInfo];
Handling of transient network errors with StackExchange.Redis

Handling of transient network errors with StackExchange.Redis


By : PRAVEEN RAJ
Date : March 29 2020, 07:55 AM
I wish this help you It doesn't retry automatically. If an error occurs, you need to catch and retry yourself.
In terms of the actual retry, as long as some of the multiplexer's connections are still alive, you can just back off and try again.
Handling network errors with axios and Twilio

Handling network errors with axios and Twilio


By : Jan
Date : March 29 2020, 07:55 AM
wish help you to fix your issue I would recommend making your fetchToken and getData methods to throw errors rather than handling it themselves so that they can be handled by their outer functions.
Something like,
code :
const getData = async () => {
  try {
    const response = await axios.get('api/data');
    return response.data;
  } catch (error) {
    throw (error);
  }
};

const fetchToken = async () => {
  try {
    const data = await axios.get('api/twilio-token');
    return data.token;
  } catch (error) {
    throw (error);
  }
};
Exception handling of network errors retrofit

Exception handling of network errors retrofit


By : ShriA
Date : March 29 2020, 07:55 AM
it should still fix some issue I was wondering what is the best way to handle network errors in retrofit requests when using coroutines. , Using Result to wrap my response
code :
sealed class Result<out T : Any> {
data class Success<out T : Any>(val value: T) : Result<T>()
data class Failure(val errorHolder:ErrorHolder) : Result<Nothing>()}
sealed class ErrorHolder(override val message):Throwable(message){
 data class NetworkConnection(override val message: String, val throwable: Throwable) : ErrorHolder(message)
 data class BadRequest(override val message: String, val throwable: Throwable) : ErrorHolder(message)
}
suspend fun <T, R> Call<T>.awaitResult(map: (T) -> R): Result<R> = suspendCancellableCoroutine { continuation ->
try {
    enqueue(object : Callback<T> {
        override fun onFailure(call: Call<T>, throwable: Throwable) {
            errorHappened(throwable)
        }

        override fun onResponse(call: Call<T>, response: Response<T>) {
            if (response.isSuccessful) {
                try {
                    continuation.resume(Result.Success(map(response.body()!!)))
                } catch (throwable: Throwable) {
                    errorHappened(throwable)
                }
            } else {
                errorHappened(HttpException(response))
            }
        }

        private fun errorHappened(throwable: Throwable) {
            continuation.resume(Result.Failure(asNetworkException(throwable)))
        }
    })
} catch (throwable: Throwable) {
    continuation.resume(Result.Failure(asNetworkException(throwable)))
}

continuation.invokeOnCancellation {
    cancel()
}}
suspend fun fetchUsers(): Result<List<User>> {
    return service.getUsers().awaitResult { usersResponseDto ->
        usersResponseDto.toListOfUsers()
    }
}
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