github.skymusic.top/operator-framework/operator-sdk@v0.8.2/cmd/operator-sdk/internal/genutil/genutil.go (about)

     1  // Copyright 2018 The Operator-SDK Authors
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package genutil
    16  
    17  import (
    18  	"fmt"
    19  	"io/ioutil"
    20  	"os"
    21  	"os/exec"
    22  	"path/filepath"
    23  	"strings"
    24  
    25  	flags "github.com/operator-framework/operator-sdk/internal/pkg/flags"
    26  	"github.com/operator-framework/operator-sdk/internal/pkg/scaffold"
    27  	"github.com/operator-framework/operator-sdk/internal/util/projutil"
    28  
    29  	log "github.com/sirupsen/logrus"
    30  	"github.com/spf13/viper"
    31  )
    32  
    33  func buildCodegenBinaries(genDirs []string, binDir, codegenSrcDir string) error {
    34  	for _, gd := range genDirs {
    35  		err := runGoBuildCodegen(binDir, codegenSrcDir, gd)
    36  		if err != nil {
    37  			return err
    38  		}
    39  	}
    40  	return nil
    41  }
    42  
    43  func runGoBuildCodegen(binDir, repoDir, genDir string) error {
    44  	binPath := filepath.Join(binDir, filepath.Base(genDir))
    45  	cmd := exec.Command("go", "build", "-o", binPath, genDir)
    46  	cmd.Dir = repoDir
    47  	if gf, ok := os.LookupEnv(projutil.GoFlagsEnv); ok && len(gf) != 0 {
    48  		cmd.Env = append(os.Environ(), projutil.GoFlagsEnv+"="+gf)
    49  	}
    50  
    51  	// Only print binary build info if verbosity is explicitly set.
    52  	if viper.GetBool(flags.VerboseOpt) {
    53  		return projutil.ExecCmd(cmd)
    54  	}
    55  	cmd.Stdout = ioutil.Discard
    56  	cmd.Stderr = ioutil.Discard
    57  	return cmd.Run()
    58  }
    59  
    60  // ParseGroupVersions parses the layout of pkg/apis to return a map of
    61  // API groups to versions.
    62  func parseGroupVersions() (map[string][]string, error) {
    63  	gvs := make(map[string][]string)
    64  	groups, err := ioutil.ReadDir(scaffold.ApisDir)
    65  	if err != nil {
    66  		return nil, fmt.Errorf("could not read pkg/apis directory to find api Versions: %v", err)
    67  	}
    68  
    69  	for _, g := range groups {
    70  		if g.IsDir() {
    71  			groupDir := filepath.Join(scaffold.ApisDir, g.Name())
    72  			versions, err := ioutil.ReadDir(groupDir)
    73  			if err != nil {
    74  				return nil, fmt.Errorf("could not read %s directory to find api Versions: %v", groupDir, err)
    75  			}
    76  
    77  			gvs[g.Name()] = make([]string, 0)
    78  			for _, v := range versions {
    79  				if v.IsDir() && scaffold.ResourceVersionRegexp.MatchString(v.Name()) {
    80  					gvs[g.Name()] = append(gvs[g.Name()], v.Name())
    81  				}
    82  			}
    83  		}
    84  	}
    85  
    86  	if len(gvs) == 0 {
    87  		return nil, fmt.Errorf("no groups or versions found in %s", scaffold.ApisDir)
    88  	}
    89  	return gvs, nil
    90  }
    91  
    92  // CreateFQApis return a string of all fully qualified pkg + groups + versions
    93  // of pkg and gvs in the format:
    94  // "pkg/groupA/v1,pkg/groupA/v2,pkg/groupB/v1"
    95  func createFQApis(pkg string, gvs map[string][]string) string {
    96  	gn := 0
    97  	fqb := &strings.Builder{}
    98  	for g, vs := range gvs {
    99  		for vn, v := range vs {
   100  			fqb.WriteString(filepath.Join(pkg, g, v))
   101  			if vn < len(vs)-1 {
   102  				fqb.WriteString(",")
   103  			}
   104  		}
   105  		if gn < len(gvs)-1 {
   106  			fqb.WriteString(",")
   107  		}
   108  		gn++
   109  	}
   110  	return fqb.String()
   111  }
   112  
   113  func withHeaderFile(f func(string) error) (err error) {
   114  	i, err := (&scaffold.Boilerplate{}).GetInput()
   115  	if err != nil {
   116  		return err
   117  	}
   118  	hf := i.Path
   119  	if _, err := os.Stat(hf); os.IsNotExist(err) {
   120  		if hf, err = createEmptyTmpFile(); err != nil {
   121  			return err
   122  		}
   123  		defer func() {
   124  			if err = os.RemoveAll(hf); err != nil {
   125  				log.Error(err)
   126  			}
   127  		}()
   128  	}
   129  	return f(hf)
   130  }
   131  
   132  func createEmptyTmpFile() (string, error) {
   133  	f, err := ioutil.TempFile("", "")
   134  	if err != nil {
   135  		return "", err
   136  	}
   137  	if err = f.Close(); err != nil {
   138  		return "", err
   139  	}
   140  	return f.Name(), nil
   141  }