lightwalletd/vendor/github.com/pkg/errors
Larry Ruane acca1a7c80 Update protoc grpc toolchain to latest
I installed the latest toolchain according to:
https://grpc.io/docs/languages/go/quickstart/

I updated the protoc command line arguments in Makefile based on
that quickstart guide, then I ran: make update-grpc

This has set the tool version (which you can see at the top of
any .pb.go file) to:

protoc-gen-go v1.25.0
protoc        v3.14.0
2021-01-05 18:20:10 -07:00
..
.gitignore cleanup: rename package and vendor dependencies for old go versions 2019-01-03 19:14:51 +00:00
.travis.yml Update protoc grpc toolchain to latest 2021-01-05 18:20:10 -07:00
LICENSE cleanup: rename package and vendor dependencies for old go versions 2019-01-03 19:14:51 +00:00
Makefile Update protoc grpc toolchain to latest 2021-01-05 18:20:10 -07:00
README.md Update protoc grpc toolchain to latest 2021-01-05 18:20:10 -07:00
appveyor.yml cleanup: rename package and vendor dependencies for old go versions 2019-01-03 19:14:51 +00:00
errors.go Update protoc grpc toolchain to latest 2021-01-05 18:20:10 -07:00
go113.go Update protoc grpc toolchain to latest 2021-01-05 18:20:10 -07:00
stack.go Update protoc grpc toolchain to latest 2021-01-05 18:20:10 -07:00

README.md

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.

Roadmap

With the upcoming Go2 error proposals this package is moving into maintenance mode. The roadmap for a 1.0 release is as follows:

  • 0.9. Remove pre Go 1.9 and Go 1.10 support, address outstanding pull requests (if possible)
  • 1.0. Final release.

Contributing

Because of the Go2 errors changes, this package is not accepting proposals for new functionality. With that said, we welcome pull requests, bug fixes and issue reports.

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

License

BSD-2-Clause