d2b09d854f
Implement a new error handling library based on pkg/errors. It provides stack saving on wrapping and exports some function to add stack saving also to external errors. It also implements custom zerolog error formatting without adding too much verbosity by just printing the chain error file:line without a full stack trace of every error. * Add a --detailed-errors options to print error with they full chain * Wrap all error returns. Use errors.WithStack to wrap without adding a new messsage and error.Wrap[f] to add a message. * Add golangci-lint wrapcheck to check that external packages errors are wrapped. This won't check that internal packages error are wrapped. But we want also to ensure this case so we'll have to find something else to check also these.
39 lines
1.4 KiB
Go
39 lines
1.4 KiB
Go
// +build go1.13
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package errors
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import (
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stderrors "errors"
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)
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// Is reports whether any error in err's chain matches target.
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//
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// The chain consists of err itself followed by the sequence of errors obtained by
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// repeatedly calling Unwrap.
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//
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// An error is considered to match a target if it is equal to that target or if
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// it implements a method Is(error) bool such that Is(target) returns true.
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func Is(err, target error) bool { return stderrors.Is(err, target) }
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// As finds the first error in err's chain that matches target, and if so, sets
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// target to that error value and returns true.
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//
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// The chain consists of err itself followed by the sequence of errors obtained by
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// repeatedly calling Unwrap.
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//
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// An error matches target if the error's concrete value is assignable to the value
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// pointed to by target, or if the error has a method As(interface{}) bool such that
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// As(target) returns true. In the latter case, the As method is responsible for
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// setting target.
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//
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// As will panic if target is not a non-nil pointer to either a type that implements
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// error, or to any interface type. As returns false if err is nil.
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func As(err error, target interface{}) bool { return stderrors.As(err, target) }
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// Unwrap returns the result of calling the Unwrap method on err, if err's
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// type contains an Unwrap method returning error.
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// Otherwise, Unwrap returns nil.
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func Unwrap(err error) error {
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return stderrors.Unwrap(err)
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}
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