I have an go application running 24 hours a day. Does anyone have an idea for a separate application that looks up whether the main application is running? If the main application has a bug, an additional application should close the main application and re-run the main application. Or maybe there is something in the style of the destructor, which could be the main application?
Restart the go application when the error
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In case of returned
errors it's the task of your application to handle them correctly and restart the appropriate parts. It get's harder in case ofpanics. Here Go providesrecover. It's like acatchof exceptions.In https://github.com/tideland/goas I provide
loop, a package to run goroutines in a controlled way. Beside a traditional approach with the ability to stop a goroutine and/or retrieve an error value in case it died you can also start a goroutine withGoRecoverable. It provides a way to pass a function that's called in case of a panic and also knows about count and frequency. So it can act or decide if a goroutine shall continue work (e.g. by resetting/re-initializing those parts of your code that are covered by the failure).