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project_util.go
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/
project_util.go
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// Copyright 2018 The Operator-SDK Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package projutil
import (
"log"
"os"
"path/filepath"
"strings"
)
const (
SrcDir = "src"
gopkgToml = "./Gopkg.toml"
buildDockerfile = "./build/Dockerfile"
)
const (
GopathEnv = "GOPATH"
)
// OperatorType - the type of operator
type OperatorType = string
const (
// OperatorTypeGo - golang type of operator.
OperatorTypeGo OperatorType = "go"
// OperatorTypeAnsible - ansible type of operator.
OperatorTypeAnsible OperatorType = "ansible"
)
// MustInProjectRoot checks if the current dir is the project root and returns the current repo's import path
// e.g github.com/example-inc/app-operator
func MustInProjectRoot() {
// if the current directory has the "./build/dockerfile" file, then it is safe to say
// we are at the project root.
_, err := os.Stat(buildDockerfile)
if err != nil && os.IsNotExist(err) {
log.Fatalf("must run command in project root dir: %v", err)
}
}
func MustGetwd() string {
wd, err := os.Getwd()
if err != nil {
log.Fatalf("failed to get working directory: (%v)", err)
}
return wd
}
// CheckAndGetCurrPkg checks if this project's repository path is rooted under $GOPATH and returns the current directory's import path
// e.g: "github.com/example-inc/app-operator"
func CheckAndGetCurrPkg() string {
gopath := os.Getenv(GopathEnv)
if len(gopath) == 0 {
log.Fatalf("get current pkg failed: GOPATH env not set")
}
goSrc := filepath.Join(gopath, SrcDir)
wd := MustGetwd()
if !strings.HasPrefix(filepath.Dir(wd), goSrc) {
log.Fatalf("check current pkg failed: must run from gopath")
}
currPkg := strings.Replace(wd, goSrc+string(filepath.Separator), "", 1)
// strip any "/" prefix from the repo path.
return strings.TrimPrefix(currPkg, string(filepath.Separator))
}
// GetOperatorType returns type of operator is in cwd
// This function should be called after verifying the user is in project root
// e.g: "go", "ansible"
func GetOperatorType() OperatorType {
// Assuming that if Gopkg.toml exists then this is a Go operator
_, err := os.Stat(gopkgToml)
if err != nil && os.IsNotExist(err) {
return OperatorTypeAnsible
}
return OperatorTypeGo
}