global-error-handling | Code example for Expecting the Unexpected — Best | Architecture library
kandi X-RAY | global-error-handling Summary
kandi X-RAY | global-error-handling Summary
Code example for Expecting the Unexpected — Best practices for Error handling in Angular
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QUESTION
We want to apply global error handling with a Request/Response pattern. Current code looks as below. Goal is to bring a custom Response object into the global error handling call. Is this possible? See custom response object below, and example of global error handling.
Current Code:
...ANSWER
Answered 2019-Sep-22 at 03:16You can't. Well you can but its messy.
You have two types of custom error and the client will want to be able to parse both, plus the non errored response.
Obviously you could simply fall through when you deserialise on the client side.
Normally you check the httpcode and if its not 200 you know to deserialse an error object. You can try the first style and then the second if that throws. But its not a great approach.
Better to get rid of one of your custom error formats.
Your controller error handling is the worst of the two. It wont pass through error codes such as 401 if you have a dependency which uses the same auth.
But more seriously the wrapper simply confuses what the client has to check to see if the response is good or not. have the client throw an exception when the server returns an exception. Dont wrap it all up in a custom object and have the calling code have if(response.IsError) { throw..} littered everywhere
QUESTION
I read the Global Error Handling recommendations and the Tracing in Web API 2 articles, and I understand how to set these things up. However, I noticed in the error handling part, that it states:
While Web API does have tracing infrastructure that captures error conditions the tracing infrastructure is for diagnostics purposes and is not designed or suited for running in production environments. Global exception handling and logging should be services that can run during production and be plugged into existing monitoring solutions
I'm looking for clarification on this. Is this statement saying that errors should only be logged as part of the trace when not in production, or that a custom implementation of ITraceWriter should only be registered with the HttpConfiguration when not in production?
I would assume that the article says
not designed or suited for running in production environments
simply for the performance impact, but is there some different contextual info that I could see for a specific error by looking at the Exception on the TraceRecord vs. the Exception that gets passed into the IExceptionLogger?
ANSWER
Answered 2018-Jan-13 at 00:37Going by what was written, it's meant as a rudimentary form of tracing and logging that whilst fine for developer and diagnostic environments is not for production due to performance and feature reasons.
To be due-diligent it advises to use an out-of-process service (eg log4net in a separate process or take your pick from Azure) so as to reduce probability of logging failing due to a fault in the core process; room to expand performance; and potential for a more feature rich logging system not provided in the default design.
QUESTION
I have an errorhandler that looks like this:
...ANSWER
Answered 2017-Oct-09 at 08:05The Reason you are getting this is when running the command ng build --prod --aot .
builds make use of bundling and limited tree-shaking, while --prod builds also run limited dead code elimination via UglifyJS.
In Short - all the Error logs are minified so that the bundle size is reduced i:e is one of the reasons that we get the uglified error message in Production build .
In order for this to not happen you can make use of this command but only while in testing ng serve --aot or ng serve --prod to check for any errors as
The AOT compiler detects and reports template binding errors during the build step before users can see them.
QUESTION
I need to catch any front end (angulardart) error and send it back to the server.
I saw there is something like his in regular Angular ErrorHandler, but I can't find any equivalent in angular dart (or dart it self).
Maybe I should hack the Exception object's constructor, but I don't find it a good approach (assuming it's possible)
any hints please?
...ANSWER
Answered 2017-Aug-17 at 15:22In Dart it's quite similar:
QUESTION
I am trying to understand custom exceptionhandlers but am not getting the hang of it. I tried implementing a custom exception handler like explained in the following pages:
https://www.exceptionnotfound.net/the-asp-net-web-api-exception-handling-pipeline-a-guided-tour/
https://docs.microsoft.com/en-us/aspnet/web-api/overview/error-handling/web-api-global-error-handling
Now my code is:
...ANSWER
Answered 2017-Apr-29 at 12:30Quote from: https://www.exceptionnotfound.net/the-asp-net-web-api-exception-handling-pipeline-a-guided-tour/:
"The handler, like the logger, must be registered in the Web API configuration. Note that we can only have one Exception Handler per application."
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