go.temporal.io/server/common/log/panic.go

28 LOC · 11 covered · 17 uncovered · 4 ranges · 1589 concepts · 3 introducers · 734 tests

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  package log
  
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  import (
  
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  	"fmt"
  
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  	"runtime/debug"
  
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  	"go.temporal.io/api/serviceerror"
  
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  	"go.temporal.io/server/common/log/tag"
  
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  )
  
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  // CapturePanic is used to capture panic, it will log the panic and also return the error through pointer.
  
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  // If the panic value is not error then a default error is returned
  
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  // We have to use pointer is because in golang: "recover return nil if was not called directly by a deferred function."
  
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  // And we have to set the returned error otherwise our handler will return nil as error which is incorrect
  
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  >
  func CapturePanic(logger Logger, retError *error) {
  
panic.go ×1

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  	if panicObj := recover(); panicObj != nil {
  
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  		err, ok := panicObj.(error)
  
panic.go ×2

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  		if !ok {
  
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  			err = fmt.Errorf("panic: %v", panicObj)
  
panic.go ×1

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  		}
  
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  		st := string(debug.Stack())
  
panic.go ×2

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  >
  
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  		logger.Error("Panic is captured", tag.SysStackTrace(st), tag.Error(err))
  
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  >
  
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  		*retError = serviceerror.NewInternal(err.Error())
  
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  	}
  
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  }