ceph-csi/vendor/github.com/pkg/errors
Niels de Vos 8c4379862a rebase: remove "github.com/pkg/errors" from go.mod
There is no direct dependency on "github.com/pkg/errors" anymore, so it
can be removed from go.mod.

After running `go mod tidy`, the "github.com/pkg/errors" gets downgraded
to a version that is referenced in other depndencies. This was
unexpected, but seems needed.

Signed-off-by: Niels de Vos <ndevos@redhat.com>
2020-07-03 09:12:48 +00:00
..
.gitignore Migrate from dep to go module 2020-03-17 10:44:07 +00:00
.travis.yml rebase: remove "github.com/pkg/errors" from go.mod 2020-07-03 09:12:48 +00:00
appveyor.yml Migrate from dep to go module 2020-03-17 10:44:07 +00:00
errors.go rebase: remove "github.com/pkg/errors" from go.mod 2020-07-03 09:12:48 +00:00
LICENSE rbdplugin: idempotent DeleteVolume 2018-10-09 12:08:56 +02:00
README.md rebase: remove "github.com/pkg/errors" from go.mod 2020-07-03 09:12:48 +00:00
stack.go rebase: remove "github.com/pkg/errors" from go.mod 2020-07-03 09:12:48 +00:00

errors Travis-CI AppVeyor GoDoc Report card Sourcegraph

Package errors provides simple error handling primitives.

go get github.com/pkg/errors

The traditional error handling idiom in Go is roughly akin to

if err != nil {
        return err
}

which applied recursively up the call stack results in error reports without context or debugging information. The errors package allows programmers to add context to the failure path in their code in a way that does not destroy the original value of the error.

Adding context to an error

The errors.Wrap function returns a new error that adds context to the original error. For example

_, err := ioutil.ReadAll(r)
if err != nil {
        return errors.Wrap(err, "read failed")
}

Retrieving the cause of an error

Using errors.Wrap constructs a stack of errors, adding context to the preceding error. Depending on the nature of the error it may be necessary to reverse the operation of errors.Wrap to retrieve the original error for inspection. Any error value which implements this interface can be inspected by errors.Cause.

type causer interface {
        Cause() error
}

errors.Cause will recursively retrieve the topmost error which does not implement causer, which is assumed to be the original cause. For example:

switch err := errors.Cause(err).(type) {
case *MyError:
        // handle specifically
default:
        // unknown error
}

Read the package documentation for more information.

Contributing

We welcome pull requests, bug fixes and issue reports. With that said, the bar for adding new symbols to this package is intentionally set high.

Before proposing a change, please discuss your change by raising an issue.

License

BSD-2-Clause