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sap-jenkins-library/cmd/kanikoExecute.go
2022-03-21 09:14:36 +01:00

255 lines
11 KiB
Go

package cmd
import (
"fmt"
"strings"
"github.com/SAP/jenkins-library/pkg/buildsettings"
"github.com/SAP/jenkins-library/pkg/certutils"
piperhttp "github.com/SAP/jenkins-library/pkg/http"
"github.com/pkg/errors"
"github.com/SAP/jenkins-library/pkg/command"
"github.com/SAP/jenkins-library/pkg/docker"
"github.com/SAP/jenkins-library/pkg/log"
"github.com/SAP/jenkins-library/pkg/piperutils"
"github.com/SAP/jenkins-library/pkg/telemetry"
)
func kanikoExecute(config kanikoExecuteOptions, telemetryData *telemetry.CustomData, commonPipelineEnvironment *kanikoExecuteCommonPipelineEnvironment) {
// for command execution use Command
c := command.Command{
ErrorCategoryMapping: map[string][]string{
log.ErrorConfiguration.String(): {
"unsupported status code 401",
},
},
}
// reroute command output to logging framework
c.Stdout(log.Writer())
c.Stderr(log.Writer())
client := &piperhttp.Client{}
fileUtils := &piperutils.Files{}
err := runKanikoExecute(&config, telemetryData, commonPipelineEnvironment, &c, client, fileUtils)
if err != nil {
log.Entry().WithError(err).Fatal("Kaniko execution failed")
}
}
func runKanikoExecute(config *kanikoExecuteOptions, telemetryData *telemetry.CustomData, commonPipelineEnvironment *kanikoExecuteCommonPipelineEnvironment, execRunner command.ExecRunner, httpClient piperhttp.Sender, fileUtils piperutils.FileUtils) error {
binfmtSupported, _ := docker.IsBinfmtMiscSupportedByHost(fileUtils)
if !binfmtSupported && len(config.TargetArchitectures) > 0 {
log.Entry().Warning("Be aware that the host doesn't support binfmt_misc and thus multi archtecture docker builds might not be possible")
}
// backward compatibility for parameter ContainerBuildOptions
if len(config.ContainerBuildOptions) > 0 {
config.BuildOptions = strings.Split(config.ContainerBuildOptions, " ")
log.Entry().Warning("Parameter containerBuildOptions is deprecated, please use buildOptions instead.")
telemetryData.Custom1Label = "ContainerBuildOptions"
telemetryData.Custom1 = config.ContainerBuildOptions
}
// prepare kaniko container for running with proper Docker config.json and custom certificates
// custom certificates will be downloaded and appended to ca-certificates.crt file used in container
if len(config.ContainerPreparationCommand) > 0 {
prepCommand := strings.Split(config.ContainerPreparationCommand, " ")
if err := execRunner.RunExecutable(prepCommand[0], prepCommand[1:]...); err != nil {
return errors.Wrap(err, "failed to initialize Kaniko container")
}
}
if len(config.CustomTLSCertificateLinks) > 0 {
err := certutils.CertificateUpdate(config.CustomTLSCertificateLinks, httpClient, fileUtils, "/kaniko/ssl/certs/ca-certificates.crt")
if err != nil {
return errors.Wrap(err, "failed to update certificates")
}
} else {
log.Entry().Info("skipping updation of certificates")
}
dockerConfig := []byte(`{"auths":{}}`)
if len(config.DockerConfigJSON) > 0 {
var err error
dockerConfig, err = fileUtils.FileRead(config.DockerConfigJSON)
if err != nil {
return errors.Wrapf(err, "failed to read file '%v'", config.DockerConfigJSON)
}
}
if err := fileUtils.FileWrite("/kaniko/.docker/config.json", dockerConfig, 0644); err != nil {
return errors.Wrap(err, "failed to write file '/kaniko/.docker/config.json'")
}
log.Entry().Debugf("preparing build settings information...")
stepName := "kanikoExecute"
// ToDo: better testability required. So far retrieval of config is rather non deterministic
dockerImage, err := GetDockerImageValue(stepName)
if err != nil {
return fmt.Errorf("failed to retrieve dockerImage configuration: %w", err)
}
kanikoConfig := buildsettings.BuildOptions{
DockerImage: dockerImage,
BuildSettingsInfo: config.BuildSettingsInfo,
}
log.Entry().Debugf("creating build settings information...")
buildSettingsInfo, err := buildsettings.CreateBuildSettingsInfo(&kanikoConfig, stepName)
if err != nil {
log.Entry().Warnf("failed to create build settings info: %v", err)
}
commonPipelineEnvironment.custom.buildSettingsInfo = buildSettingsInfo
if !piperutils.ContainsString(config.BuildOptions, "--destination") {
dest := []string{"--no-push"}
if len(config.ContainerRegistryURL) > 0 && len(config.ContainerImageName) > 0 && len(config.ContainerImageTag) > 0 {
containerRegistry, err := docker.ContainerRegistryFromURL(config.ContainerRegistryURL)
if err != nil {
log.SetErrorCategory(log.ErrorConfiguration)
return errors.Wrapf(err, "failed to read registry url %v", config.ContainerRegistryURL)
}
commonPipelineEnvironment.container.registryURL = config.ContainerRegistryURL
// Docker image tags don't allow plus signs in tags, thus replacing with dash
containerImageTag := strings.ReplaceAll(config.ContainerImageTag, "+", "-")
if config.ContainerMultiImageBuild {
log.Entry().Debugf("Multi-image build activated for image name '%v'", config.ContainerImageName)
imageListWithFilePath, err := docker.ImageListWithFilePath(config.ContainerImageName, config.ContainerMultiImageBuildExcludes, config.ContainerMultiImageBuildTrimDir, fileUtils)
if err != nil {
return fmt.Errorf("failed to identify image list for multi image build: %w", err)
}
if len(imageListWithFilePath) == 0 {
return fmt.Errorf("no docker files to process, please check exclude list")
}
for image, file := range imageListWithFilePath {
log.Entry().Debugf("Building image '%v' using file '%v'", image, file)
containerImageNameAndTag := fmt.Sprintf("%v:%v", image, containerImageTag)
dest = []string{"--destination", fmt.Sprintf("%v/%v", containerRegistry, containerImageNameAndTag)}
buildOpts := append(config.BuildOptions, dest...)
err = runKaniko(file, buildOpts, config.ReadImageDigest, execRunner, fileUtils, commonPipelineEnvironment)
if err != nil {
return fmt.Errorf("failed to build image '%v' using '%v': %w", image, file, err)
}
commonPipelineEnvironment.container.imageNames = append(commonPipelineEnvironment.container.imageNames, image)
commonPipelineEnvironment.container.imageNameTags = append(commonPipelineEnvironment.container.imageNameTags, containerImageNameAndTag)
}
// for compatibility reasons also fill single imageNameTag field with "root" image in commonPipelineEnvironment
// only consider if it has been built
// ToDo: reconsider and possibly remove at a later point
if len(imageListWithFilePath[config.ContainerImageName]) > 0 {
containerImageNameAndTag := fmt.Sprintf("%v:%v", config.ContainerImageName, containerImageTag)
commonPipelineEnvironment.container.imageNameTag = containerImageNameAndTag
}
return nil
} else {
commonPipelineEnvironment.container.imageNames = append(commonPipelineEnvironment.container.imageNames, config.ContainerImageName)
commonPipelineEnvironment.container.imageNameTags = append(commonPipelineEnvironment.container.imageNameTags, fmt.Sprintf("%v:%v", config.ContainerImageName, containerImageTag))
}
log.Entry().Debugf("Single image build for image name '%v'", config.ContainerImageName)
containerImageNameAndTag := fmt.Sprintf("%v:%v", config.ContainerImageName, containerImageTag)
dest = []string{"--destination", fmt.Sprintf("%v/%v", containerRegistry, containerImageNameAndTag)}
commonPipelineEnvironment.container.imageNameTag = containerImageNameAndTag
} else if len(config.ContainerImage) > 0 {
log.Entry().Debugf("Single image build for image '%v'", config.ContainerImage)
containerRegistry, err := docker.ContainerRegistryFromImage(config.ContainerImage)
if err != nil {
log.SetErrorCategory(log.ErrorConfiguration)
return errors.Wrapf(err, "invalid registry part in image %v", config.ContainerImage)
}
// errors are already caught with previous call to docker.ContainerRegistryFromImage
containerImageName, _ := docker.ContainerImageNameFromImage(config.ContainerImage)
containerImageNameTag, _ := docker.ContainerImageNameTagFromImage(config.ContainerImage)
dest = []string{"--destination", config.ContainerImage}
commonPipelineEnvironment.container.registryURL = fmt.Sprintf("https://%v", containerRegistry)
commonPipelineEnvironment.container.imageNameTag = containerImageNameTag
commonPipelineEnvironment.container.imageNameTags = append(commonPipelineEnvironment.container.imageNameTags, containerImageNameTag)
commonPipelineEnvironment.container.imageNames = append(commonPipelineEnvironment.container.imageNames, containerImageName)
}
config.BuildOptions = append(config.BuildOptions, dest...)
} else {
log.Entry().Infof("Running Kaniko build with destination defined via buildOptions: %v", config.BuildOptions)
destination := ""
for i, o := range config.BuildOptions {
if o == "--destination" && i+1 < len(config.BuildOptions) {
destination = config.BuildOptions[i+1]
break
}
}
containerRegistry, err := docker.ContainerRegistryFromImage(destination)
if err != nil {
log.SetErrorCategory(log.ErrorConfiguration)
return errors.Wrapf(err, "invalid registry part in image %v", destination)
}
containerImageName, _ := docker.ContainerImageNameFromImage(destination)
containerImageNameTag, _ := docker.ContainerImageNameTagFromImage(destination)
commonPipelineEnvironment.container.registryURL = fmt.Sprintf("https://%v", containerRegistry)
commonPipelineEnvironment.container.imageNameTag = containerImageNameTag
commonPipelineEnvironment.container.imageNameTags = append(commonPipelineEnvironment.container.imageNameTags, containerImageNameTag)
commonPipelineEnvironment.container.imageNames = append(commonPipelineEnvironment.container.imageNames, containerImageName)
}
// no support for building multiple containers
return runKaniko(config.DockerfilePath, config.BuildOptions, config.ReadImageDigest, execRunner, fileUtils, commonPipelineEnvironment)
}
func runKaniko(dockerFilepath string, buildOptions []string, readDigest bool, execRunner command.ExecRunner, fileUtils piperutils.FileUtils, commonPipelineEnvironment *kanikoExecuteCommonPipelineEnvironment) error {
cwd, err := fileUtils.Getwd()
if err != nil {
return fmt.Errorf("failed to get current working directory: %w", err)
}
kanikoOpts := []string{"--dockerfile", dockerFilepath, "--context", cwd}
kanikoOpts = append(kanikoOpts, buildOptions...)
tmpDir, err := fileUtils.TempDir("", "*-kanikoExecute")
if err != nil {
return fmt.Errorf("failed to create tmp dir for kanikoExecute: %w", err)
}
digestFilePath := fmt.Sprintf("%s/digest.txt", tmpDir)
if readDigest {
kanikoOpts = append(kanikoOpts, "--digest-file", digestFilePath)
}
err = execRunner.RunExecutable("/kaniko/executor", kanikoOpts...)
if err != nil {
log.SetErrorCategory(log.ErrorBuild)
return errors.Wrap(err, "execution of '/kaniko/executor' failed")
}
if b, err := fileUtils.FileExists(digestFilePath); err == nil && b {
digest, err := fileUtils.FileRead(digestFilePath)
if err != nil {
return errors.Wrap(err, "error while reading image digest")
}
digestStr := string(digest)
log.Entry().Debugf("image digest: %s", digestStr)
commonPipelineEnvironment.container.imageDigest = string(digestStr)
commonPipelineEnvironment.container.imageDigests = append(commonPipelineEnvironment.container.imageDigests, digestStr)
}
return nil
}