github.com/mkimuram/operator-sdk@v0.7.1-0.20190410172100-52ad33a4bda0/cmd/operator-sdk/internal/genutil/k8s.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  	"os/exec"
    20  	"path/filepath"
    21  	"strings"
    22  
    23  	"github.com/operator-framework/operator-sdk/internal/pkg/scaffold"
    24  	"github.com/operator-framework/operator-sdk/internal/util/projutil"
    25  
    26  	log "github.com/sirupsen/logrus"
    27  )
    28  
    29  // K8sCodegen performs deepcopy code-generation for all custom resources under
    30  // pkg/apis. hf is  a path to a header file containing text to add to generated
    31  // files.
    32  func K8sCodegen(hf string) error {
    33  	projutil.MustInProjectRoot()
    34  
    35  	wd := projutil.MustGetwd()
    36  	repoPkg := projutil.CheckAndGetProjectGoPkg()
    37  	srcDir := filepath.Join(wd, "vendor", "k8s.io", "code-generator")
    38  	binDir := filepath.Join(wd, scaffold.BuildBinDir)
    39  
    40  	genDirs := []string{
    41  		"./cmd/defaulter-gen",
    42  		"./cmd/client-gen",
    43  		"./cmd/lister-gen",
    44  		"./cmd/informer-gen",
    45  		"./cmd/deepcopy-gen",
    46  	}
    47  	if err := buildCodegenBinaries(genDirs, binDir, srcDir); err != nil {
    48  		return err
    49  	}
    50  
    51  	gvMap, err := parseGroupVersions()
    52  	if err != nil {
    53  		return fmt.Errorf("failed to parse group versions: (%v)", err)
    54  	}
    55  	gvb := &strings.Builder{}
    56  	for g, vs := range gvMap {
    57  		gvb.WriteString(fmt.Sprintf("%s:%v, ", g, vs))
    58  	}
    59  
    60  	log.Infof("Running deepcopy code-generation for Custom Resource group versions: [%v]\n", gvb.String())
    61  
    62  	fdc := func(a string) error { return deepcopyGen(binDir, repoPkg, a, gvMap) }
    63  	if err = withHeaderFile(hf, fdc); err != nil {
    64  		return err
    65  	}
    66  	fd := func(a string) error { return defaulterGen(binDir, repoPkg, a, gvMap) }
    67  	if err = withHeaderFile(hf, fd); err != nil {
    68  		return err
    69  	}
    70  
    71  	log.Info("Code-generation complete.")
    72  	return nil
    73  }
    74  
    75  func deepcopyGen(binDir, repoPkg, hf string, gvMap map[string][]string) (err error) {
    76  	apisPkg := filepath.Join(repoPkg, scaffold.ApisDir)
    77  	args := []string{
    78  		"--input-dirs", createFQApis(apisPkg, gvMap),
    79  		"--output-file-base", "zz_generated.deepcopy",
    80  		"--bounding-dirs", apisPkg,
    81  		// deepcopy-gen requires a boilerplate file. Either use header or an
    82  		// empty file if header is empty.
    83  		"--go-header-file", hf,
    84  	}
    85  	cmd := exec.Command(filepath.Join(binDir, "deepcopy-gen"), args...)
    86  	if err = projutil.ExecCmd(cmd); err != nil {
    87  		return fmt.Errorf("failed to perform deepcopy code-generation: %v", err)
    88  	}
    89  	return nil
    90  }
    91  
    92  func defaulterGen(binDir, repoPkg, hf string, gvMap map[string][]string) (err error) {
    93  	apisPkg := filepath.Join(repoPkg, scaffold.ApisDir)
    94  	args := []string{
    95  		"--input-dirs", createFQApis(apisPkg, gvMap),
    96  		"--output-file-base", "zz_generated.defaults",
    97  		// defaulter-gen requires a boilerplate file. Either use header or an
    98  		// empty file if header is empty.
    99  		"--go-header-file", hf,
   100  	}
   101  	cmd := exec.Command(filepath.Join(binDir, "defaulter-gen"), args...)
   102  	if err = projutil.ExecCmd(cmd); err != nil {
   103  		return fmt.Errorf("failed to perform defaulter code-generation: %v", err)
   104  	}
   105  	return nil
   106  }