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common_buildpacks.go
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/
common_buildpacks.go
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package cmd
import (
"fmt"
"github.com/jenkins-x/draft-repo/pkg/draft/pack"
"github.com/jenkins-x/jx/pkg/config"
jxdraft "github.com/jenkins-x/jx/pkg/draft"
"github.com/jenkins-x/jx/pkg/jenkins"
"github.com/jenkins-x/jx/pkg/jenkinsfile"
"github.com/jenkins-x/jx/pkg/log"
"github.com/jenkins-x/jx/pkg/util"
"os"
"path/filepath"
)
// InvokeDraftPack used to pass arguments into the draft pack invocation
type InvokeDraftPack struct {
Dir string
CustomDraftPack string
Jenkinsfile string
DefaultJenkinsfile string
WithRename bool
InitialisedGit bool
DisableJenkinsfileCheck bool
}
// initBuildPacks initalise the build packs
func (o *CommonOptions) initBuildPacks() (string, error) {
settings, err := o.TeamSettings()
if err != nil {
return "", err
}
return jenkinsfile.InitBuildPack(o.Git(), settings.BuildPackURL, settings.BuildPackRef)
}
// invokeDraftPack invokes a draft pack copying in a Jenkinsfile if required
func (o *CommonOptions) invokeDraftPack(i *InvokeDraftPack) (string, error) {
packsDir, err := o.initBuildPacks()
if err != nil {
return "", err
}
dir := i.Dir
customDraftPack := i.CustomDraftPack
disableJenkinsfileCheck := i.DisableJenkinsfileCheck
initialisedGit := i.InitialisedGit
withRename := i.WithRename
jenkinsfilePath := i.Jenkinsfile
defaultJenkinsfile := i.DefaultJenkinsfile
if defaultJenkinsfile == "" {
defaultJenkinsfile = filepath.Join(dir, jenkins.DefaultJenkinsfile)
}
pomName := filepath.Join(dir, "pom.xml")
gradleName := filepath.Join(dir, "build.gradle")
jenkinsPluginsName := filepath.Join(dir, "plugins.txt")
packagerConfigName := filepath.Join(dir, "packager-config.yml")
lpack := ""
if len(customDraftPack) == 0 {
projectConfig, _, err := config.LoadProjectConfig(dir)
if err != nil {
return "", err
}
customDraftPack = projectConfig.BuildPack
}
if len(customDraftPack) > 0 {
log.Info("trying to use draft pack: " + customDraftPack + "\n")
lpack = filepath.Join(packsDir, customDraftPack)
f, err := util.FileExists(lpack)
if err != nil {
log.Error(err.Error())
return "", err
}
if f == false {
log.Error("Could not find pack: " + customDraftPack + " going to try detect which pack to use")
lpack = ""
}
}
if len(lpack) == 0 {
if exists, err := util.FileExists(pomName); err == nil && exists {
pack, err := util.PomFlavour(pomName)
if err != nil {
return "", err
}
if len(pack) > 0 {
if pack == util.LIBERTY {
lpack = filepath.Join(packsDir, "liberty")
} else if pack == util.APPSERVER {
lpack = filepath.Join(packsDir, "appserver")
} else if pack == util.DROPWIZARD {
lpack = filepath.Join(packsDir, "dropwizard")
} else {
log.Warn("Do not know how to handle pack: " + pack)
}
} else {
lpack = filepath.Join(packsDir, "maven")
}
exists, _ = util.FileExists(lpack)
if !exists {
log.Warn("defaulting to maven pack")
lpack = filepath.Join(packsDir, "maven")
}
} else if exists, err := util.FileExists(gradleName); err == nil && exists {
lpack = filepath.Join(packsDir, "gradle")
} else if exists, err := util.FileExists(jenkinsPluginsName); err == nil && exists {
lpack = filepath.Join(packsDir, "jenkins")
} else if exists, err := util.FileExists(packagerConfigName); err == nil && exists {
lpack = filepath.Join(packsDir, "cwp")
} else {
// pack detection time
lpack, err = jxdraft.DoPackDetectionForBuildPack(o.Out, dir, packsDir)
if err != nil {
return "", err
}
}
}
log.Success("selected pack: " + lpack + "\n")
draftPack := filepath.Base(lpack)
chartsDir := filepath.Join(dir, "charts")
jenkinsfileExists, err := util.FileExists(jenkinsfilePath)
exists, err := util.FileExists(chartsDir)
if exists && err == nil {
exists, err = util.FileExists(filepath.Join(dir, "Dockerfile"))
if exists && err == nil {
if jenkinsfileExists || disableJenkinsfileCheck {
log.Warn("existing Dockerfile, Jenkinsfile and charts folder found so skipping 'draft create' step\n")
return draftPack, nil
}
}
}
generateJenkinsPath := jenkinsfilePath
jenkinsfileBackup := ""
if jenkinsfileExists && initialisedGit && !disableJenkinsfileCheck {
// lets copy the old Jenkinsfile in case we overwrite it
jenkinsfileBackup = jenkinsfilePath + JenkinsfileBackupSuffix
err = util.RenameFile(jenkinsfilePath, jenkinsfileBackup)
if err != nil {
return "", fmt.Errorf("Failed to rename old Jenkinsfile: %s", err)
}
} else if withRename {
defaultJenkinsfileExists, err := util.FileExists(defaultJenkinsfile)
if defaultJenkinsfileExists && initialisedGit && !disableJenkinsfileCheck {
jenkinsfileBackup = defaultJenkinsfile + JenkinsfileBackupSuffix
err = util.RenameFile(defaultJenkinsfile, jenkinsfileBackup)
if err != nil {
return "", fmt.Errorf("Failed to rename old Jenkinsfile: %s", err)
}
generateJenkinsPath = defaultJenkinsfile
}
}
err = CopyBuildPack(dir, lpack)
if err != nil {
log.Warnf("Failed to apply the build pack in %s due to %s", dir, err)
}
if !jenkinsfileExists || jenkinsfileBackup != "" {
// lets check if we have a pipeline.yaml in the build pack so we can generate one dynamically
pipelineFile := filepath.Join(lpack, jenkinsfile.PipelineConfigFileName)
exists, err := util.FileExists(pipelineFile)
if err != nil {
return draftPack, err
}
if exists {
modules, err := jenkinsfile.LoadModules(packsDir)
if err != nil {
return draftPack, err
}
// lets find the Jenkinsfile template
tmplFileName := jenkinsfile.PipelineTemplateFileName
templateFileNames := []string{filepath.Join(lpack, tmplFileName), filepath.Join(packsDir, tmplFileName)}
moduleResolver, err := modules.Resolve(o.Git())
if err != nil {
return draftPack, err
}
for _, mr := range moduleResolver.Modules {
templateFileNames = append(templateFileNames, filepath.Join(mr.PacksDir, draftPack, tmplFileName), filepath.Join(mr.PacksDir, tmplFileName))
}
templateFile, err := util.FirstFileExists(templateFileNames...)
if err != nil {
return draftPack, err
}
prow, err := o.isProw()
if err != nil {
return draftPack, err
}
if templateFile != "" {
arguments := &jenkinsfile.CreateJenkinsfileArguments{
ConfigFile: pipelineFile,
TemplateFile: templateFile,
OutputFile: generateJenkinsPath,
JenkinsfileRunner: prow,
}
err = arguments.GenerateJenkinsfile(moduleResolver.AsImportResolver())
if err != nil {
return draftPack, err
}
}
}
}
unpackedDefaultJenkinsfile := defaultJenkinsfile
if unpackedDefaultJenkinsfile != jenkinsfilePath {
unpackedDefaultJenkinsfileExists := false
unpackedDefaultJenkinsfileExists, err = util.FileExists(unpackedDefaultJenkinsfile)
if unpackedDefaultJenkinsfileExists {
err = util.RenameFile(unpackedDefaultJenkinsfile, jenkinsfilePath)
if err != nil {
return "", fmt.Errorf("Failed to rename Jenkinsfile file from '%s' to '%s': %s", unpackedDefaultJenkinsfile, jenkinsfilePath, err)
}
if jenkinsfileBackup != "" {
err = util.RenameFile(jenkinsfileBackup, defaultJenkinsfile)
if err != nil {
return "", fmt.Errorf("Failed to rename Jenkinsfile backup file: %s", err)
}
}
}
} else if jenkinsfileBackup != "" {
// if there's no Jenkinsfile created then rename it back again!
jenkinsfileExists, err = util.FileExists(jenkinsfilePath)
if err != nil {
log.Warnf("Failed to check for Jenkinsfile %s", err)
} else {
if jenkinsfileExists {
if !initialisedGit {
err = os.Remove(jenkinsfileBackup)
if err != nil {
log.Warnf("Failed to remove Jenkinsfile backup %s", err)
}
}
} else {
// lets put the old one back again
err = util.RenameFile(jenkinsfileBackup, jenkinsfilePath)
if err != nil {
return "", fmt.Errorf("Failed to rename Jenkinsfile backup file: %s", err)
}
}
}
}
return draftPack, nil
}
// CopyBuildPack copies the build pack from the source dir to the destination dir
func CopyBuildPack(dest, src string) error {
// first do some validation that we are copying from a valid pack directory
p, err := pack.FromDir(src)
if err != nil {
return fmt.Errorf("could not load %s: %s", src, err)
}
// lets remove any files we think should be zapped
for _, file := range []string{jenkinsfile.PipelineConfigFileName, jenkinsfile.PipelineTemplateFileName} {
delete(p.Files, file)
}
return p.SaveDir(dest)
}