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openshift-goimports

Organizes Go imports according to OpenShift best practices

Summary

Organizes Go imports into the following groups:

  • standard - Any of the Go standard library packages
  • other - Anything not specifically called out in this list
  • kubernetes - Anything that starts with k8s.io
  • openshift - Anything that starts with github.com/openshift
  • intermediates - Optional list of groups
  • module - Anything that is part of the current module

Example sorted import block

import (
	"context"
	"encoding/json"
	"fmt"
	"io"
	"os"
	"path/filepath"

	istorage "github.com/containers/image/v5/storage"
	"github.com/containers/image/v5/types"
	"github.com/containers/storage"

	"k8s.io/apimachinery/pkg/runtime"
	"k8s.io/apimachinery/pkg/runtime/serializer"
	restclient "k8s.io/client-go/rest"

	buildapiv1 "github.com/openshift/api/build/v1"
	buildscheme "github.com/openshift/client-go/build/clientset/versioned/scheme"
	buildclientv1 "github.com/openshift/client-go/build/clientset/versioned/typed/build/v1"
	"github.com/openshift/library-go/pkg/git"
	"github.com/openshift/library-go/pkg/serviceability"
	s2iapi "github.com/openshift/source-to-image/pkg/api"
	s2igit "github.com/openshift/source-to-image/pkg/scm/git"

	bld "github.com/openshift/builder/pkg/build/builder"
	"github.com/openshift/builder/pkg/build/builder/cmd/scmauth"
	"github.com/openshift/builder/pkg/build/builder/timing"
	builderutil "github.com/openshift/builder/pkg/build/builder/util"
	utillog "github.com/openshift/builder/pkg/build/builder/util/log"
	"github.com/openshift/builder/pkg/version"
)

Installation

# Install using go get
$ go get -u github.com/openshift-eng/openshift-goimports

Usage

Usage:
  openshift-goimports [flags]

Flags:
  -h, --help                             help for openshift-goimports
  -i, --intermediate stringArray         Names of go modules to put between openshift and module to organize. Example usage: -i github.com/thirdy/one -i thirdy.io/two
  -l, --list                             List files whose imports are not sorted without making changes
  -m, --module string                    The name of the go module. Example: github.com/example-org/example-repo (optional)
  -p, --path string                      The path to the go module to organize. Defaults to the current directory. (default ".") (optional)
  -d, --dry                              Dry run only, do not actually make any changes to files
  -v, --v Level                          number for the log level verbosity

Matching and Precedence

Each group is identified by a pattern that is sought as a substring in the import path. For example, the kubernetes group is defined by searching for the substring "k8s.io". Multiple groups can match one import. In such a case, the import is put into the first matching group in the following list.

  • the module to organize
  • the intermediate modules, in the order given on the command line
  • kubernetes
  • openshift
  • other

An import whose path matches no other group's pattern is put in the standard group.

Examples

Example CLI usage

openshift-goimports will try to automatically determine the module using the go.mod file, if present, at the provided path location.

# Basic usage, command executed against current directory
$ openshift-goimports

# Basic usage with command executed in provided directory
$ openshift-goimports --module github.com/example-org/example-repo --path ~/go/src/example-org/example-repo

Example hack/tools.go file

This file will ensure that the github.com/openshift-eng/openshift-goimports repo is vendored into your project.

//go:build tools
// +build tools

package hack

// Add tools that hack scripts depend on here, to ensure they are vendored.
import (
	_ "github.com/openshift-eng/openshift-goimports"
)

Example hack/verify-imports.sh script

This file will check if there are any go files that need to be formatted. If there are, it will print a list of them, and exit with status one (1), otherwise it will exit with status zero (0).

#!/bin/bash

bad_files=$(go run ./vendor/github.com/openshift-eng/openshift-goimports -m github.com/example/example-repo -l)
if [[ -n "${bad_files}" ]]; then
        echo "!!! openshift-goimports needs to be run on the following files:"
        echo "${bad_files}"
        echo "Try running 'make imports'"
        exit 1
fi

Example Makefile sections

imports: ## Organize imports in go files using openshift-goimports. Example: make imports
	go run ./vendor/github.com/openshift-eng/openshift-goimports/ -m github.com/example/example-repo
.PHONY: imports

verify-imports: ## Run import verifications. Example: make verify-imports
	hack/verify-imports.sh
.PHONY: verify-imports