/
dockerfile.go
337 lines (288 loc) · 13.4 KB
/
dockerfile.go
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package image
import (
"bytes"
"context"
"fmt"
"path/filepath"
"strings"
"github.com/docker/docker/builder/dockerignore"
"github.com/moby/buildkit/frontend/dockerfile/instructions"
"github.com/moby/buildkit/frontend/dockerfile/parser"
"github.com/werf/logboek"
"github.com/werf/werf/pkg/build/stage"
stage_instruction "github.com/werf/werf/pkg/build/stage/instruction"
"github.com/werf/werf/pkg/config"
"github.com/werf/werf/pkg/dockerfile"
"github.com/werf/werf/pkg/dockerfile/frontend"
"github.com/werf/werf/pkg/giterminism_manager"
"github.com/werf/werf/pkg/path_matcher"
"github.com/werf/werf/pkg/util"
)
func MapDockerfileConfigToImagesSets(ctx context.Context, dockerfileImageConfig *config.ImageFromDockerfile, opts CommonImageOptions) (ImagesSets, error) {
if dockerfileImageConfig.Staged {
relDockerfilePath := filepath.Join(dockerfileImageConfig.Context, dockerfileImageConfig.Dockerfile)
dockerfileData, err := opts.GiterminismManager.FileReader().ReadDockerfile(ctx, relDockerfilePath)
if err != nil {
return nil, fmt.Errorf("unable to read dockerfile %s: %w", relDockerfilePath, err)
}
dockerfileID := util.Sha256Hash(filepath.Clean(relDockerfilePath))
d, err := frontend.ParseDockerfileWithBuildkit(dockerfileID, dockerfileData, dockerfileImageConfig.Name, dockerfile.DockerfileOptions{
Target: dockerfileImageConfig.Target,
BuildArgs: util.MapStringInterfaceToMapStringString(dockerfileImageConfig.Args),
AddHost: dockerfileImageConfig.AddHost,
Network: dockerfileImageConfig.Network,
SSH: dockerfileImageConfig.SSH,
DependenciesArgsKeys: stage.GetDependenciesArgsKeys(dockerfileImageConfig.Dependencies),
})
if err != nil {
return nil, fmt.Errorf("unable to parse dockerfile %s: %w", relDockerfilePath, err)
}
return mapDockerfileToImagesSets(ctx, d, dockerfileImageConfig, opts)
}
img, err := mapLegacyDockerfileToImage(ctx, dockerfileImageConfig, opts)
if err != nil {
return nil, err
}
var ret ImagesSets
ret = append(ret, []*Image{img})
return ret, nil
}
func mapDockerfileToImagesSets(ctx context.Context, cfg *dockerfile.Dockerfile, dockerfileImageConfig *config.ImageFromDockerfile, opts CommonImageOptions) (ImagesSets, error) {
var ret ImagesSets
targetStage, err := cfg.GetTargetStage()
if err != nil {
return nil, fmt.Errorf("unable to get target dockerfile stage: %w", err)
}
queue := []struct {
WerfImageName string
Stage *dockerfile.DockerfileStage
Level int
IsTargetStage bool
}{
{WerfImageName: dockerfileImageConfig.Name, Stage: targetStage, Level: 0, IsTargetStage: true},
}
appendQueue := func(werfImageName string, stage *dockerfile.DockerfileStage, level int) {
queue = append(queue, struct {
WerfImageName string
Stage *dockerfile.DockerfileStage
Level int
IsTargetStage bool
}{WerfImageName: werfImageName, Stage: stage, Level: level})
}
for len(queue) > 0 {
item := queue[0]
queue = queue[1:]
appendImageToCurrentSet := func(newImg *Image) {
if item.Level == len(ret) {
ret = append([][]*Image{nil}, ret...)
}
for _, img := range ret[len(ret)-item.Level-1] {
if img.Name == newImg.Name {
return
}
}
ret[len(ret)-item.Level-1] = append(ret[len(ret)-item.Level-1], newImg)
}
stg := item.Stage
var img *Image
var err error
if baseStg := cfg.FindStage(stg.BaseName); baseStg != nil {
img, err = NewImage(ctx, item.WerfImageName, StageAsBaseImage, ImageOptions{
IsDockerfileImage: true,
IsDockerfileTargetStage: item.IsTargetStage,
DockerfileImageConfig: dockerfileImageConfig,
CommonImageOptions: opts,
BaseImageName: baseStg.GetWerfImageName(),
DockerfileExpanderFactory: stg.ExpanderFactory,
})
if err != nil {
return nil, fmt.Errorf("unable to map stage %s to werf image %q: %w", stg.LogName(), dockerfileImageConfig.Name, err)
}
appendQueue(baseStg.GetWerfImageName(), baseStg, item.Level+1)
} else {
img, err = NewImage(ctx, item.WerfImageName, ImageFromRegistryAsBaseImage, ImageOptions{
IsDockerfileImage: true,
IsDockerfileTargetStage: item.IsTargetStage,
DockerfileImageConfig: dockerfileImageConfig,
CommonImageOptions: opts,
BaseImageReference: stg.BaseName,
DockerfileExpanderFactory: stg.ExpanderFactory,
})
if err != nil {
return nil, fmt.Errorf("unable to map stage %s to werf image %q: %w", stg.LogName(), dockerfileImageConfig.Name, err)
}
}
for ind, instr := range stg.Instructions {
stageLogName := fmt.Sprintf("%s%d", strings.ToUpper(instr.GetInstructionData().Name()), ind+1)
isFirstStage := (len(img.stages) == 0)
baseStageOptions := &stage.BaseStageOptions{
TargetPlatform: img.TargetPlatform,
ImageName: img.Name,
LogName: stageLogName,
ImageTmpDir: img.TmpDir,
ContainerWerfDir: img.ContainerWerfDir,
ProjectName: opts.ProjectName,
}
var stg stage.Interface
switch typedInstr := any(instr).(type) {
case *dockerfile.DockerfileStageInstruction[*instructions.ArgCommand]:
continue
case *dockerfile.DockerfileStageInstruction[*instructions.AddCommand]:
stg = stage_instruction.NewAdd(typedInstr, dockerfileImageConfig.Dependencies, !isFirstStage, baseStageOptions)
case *dockerfile.DockerfileStageInstruction[*instructions.CmdCommand]:
stg = stage_instruction.NewCmd(typedInstr, dockerfileImageConfig.Dependencies, !isFirstStage, baseStageOptions)
case *dockerfile.DockerfileStageInstruction[*instructions.CopyCommand]:
stg = stage_instruction.NewCopy(typedInstr, dockerfileImageConfig.Dependencies, !isFirstStage, baseStageOptions)
case *dockerfile.DockerfileStageInstruction[*instructions.EntrypointCommand]:
stg = stage_instruction.NewEntrypoint(typedInstr, dockerfileImageConfig.Dependencies, !isFirstStage, baseStageOptions)
case *dockerfile.DockerfileStageInstruction[*instructions.EnvCommand]:
stg = stage_instruction.NewEnv(typedInstr, dockerfileImageConfig.Dependencies, !isFirstStage, baseStageOptions)
case *dockerfile.DockerfileStageInstruction[*instructions.ExposeCommand]:
stg = stage_instruction.NewExpose(typedInstr, dockerfileImageConfig.Dependencies, !isFirstStage, baseStageOptions)
case *dockerfile.DockerfileStageInstruction[*instructions.HealthCheckCommand]:
stg = stage_instruction.NewHealthcheck(typedInstr, dockerfileImageConfig.Dependencies, !isFirstStage, baseStageOptions)
case *dockerfile.DockerfileStageInstruction[*instructions.LabelCommand]:
stg = stage_instruction.NewLabel(typedInstr, dockerfileImageConfig.Dependencies, !isFirstStage, baseStageOptions)
case *dockerfile.DockerfileStageInstruction[*instructions.MaintainerCommand]:
stg = stage_instruction.NewMaintainer(typedInstr, dockerfileImageConfig.Dependencies, !isFirstStage, baseStageOptions)
case *dockerfile.DockerfileStageInstruction[*instructions.OnbuildCommand]:
stg = stage_instruction.NewOnBuild(typedInstr, dockerfileImageConfig.Dependencies, !isFirstStage, baseStageOptions)
case *dockerfile.DockerfileStageInstruction[*instructions.RunCommand]:
stg = stage_instruction.NewRun(typedInstr, dockerfileImageConfig.Dependencies, !isFirstStage, baseStageOptions)
case *dockerfile.DockerfileStageInstruction[*instructions.ShellCommand]:
stg = stage_instruction.NewShell(typedInstr, dockerfileImageConfig.Dependencies, !isFirstStage, baseStageOptions)
case *dockerfile.DockerfileStageInstruction[*instructions.StopSignalCommand]:
stg = stage_instruction.NewStopSignal(typedInstr, dockerfileImageConfig.Dependencies, !isFirstStage, baseStageOptions)
case *dockerfile.DockerfileStageInstruction[*instructions.UserCommand]:
stg = stage_instruction.NewUser(typedInstr, dockerfileImageConfig.Dependencies, !isFirstStage, baseStageOptions)
case *dockerfile.DockerfileStageInstruction[*instructions.VolumeCommand]:
stg = stage_instruction.NewVolume(typedInstr, dockerfileImageConfig.Dependencies, !isFirstStage, baseStageOptions)
case *dockerfile.DockerfileStageInstruction[*instructions.WorkdirCommand]:
stg = stage_instruction.NewWorkdir(typedInstr, dockerfileImageConfig.Dependencies, !isFirstStage, baseStageOptions)
default:
panic(fmt.Sprintf("unsupported instruction type %#v", instr))
}
img.stages = append(img.stages, stg)
for _, dep := range instr.GetDependenciesByStageRef() {
appendQueue(dep.GetWerfImageName(), dep, item.Level+1)
}
}
appendImageToCurrentSet(img)
}
return ret, nil
}
func mapLegacyDockerfileToImage(ctx context.Context, dockerfileImageConfig *config.ImageFromDockerfile, opts CommonImageOptions) (*Image, error) {
img, err := NewImage(ctx, dockerfileImageConfig.Name, NoBaseImage, ImageOptions{
CommonImageOptions: opts,
IsDockerfileImage: true,
IsDockerfileTargetStage: true,
DockerfileImageConfig: dockerfileImageConfig,
})
if err != nil {
return nil, fmt.Errorf("unable to create image %q: %w", dockerfileImageConfig.Name, err)
}
for _, contextAddFile := range dockerfileImageConfig.ContextAddFiles {
relContextAddFile := filepath.Join(dockerfileImageConfig.Context, contextAddFile)
absContextAddFile := filepath.Join(opts.ProjectDir, relContextAddFile)
exist, err := util.FileExists(absContextAddFile)
if err != nil {
return nil, fmt.Errorf("unable to check existence of file %s: %w", absContextAddFile, err)
}
if !exist {
return nil, fmt.Errorf("contextAddFile %q was not found (the path must be relative to the context %q)", contextAddFile, dockerfileImageConfig.Context)
}
}
dockerIgnorePathMatcher, err := createDockerIgnorePathMatcher(ctx, opts.GiterminismManager, dockerfileImageConfig.Context, dockerfileImageConfig.Dockerfile)
if err != nil {
return nil, fmt.Errorf("unable to create dockerignore path matcher: %w", err)
}
relDockerfilePath := filepath.Join(dockerfileImageConfig.Context, dockerfileImageConfig.Dockerfile)
dockerfileData, err := opts.GiterminismManager.FileReader().ReadDockerfile(ctx, relDockerfilePath)
if err != nil {
return nil, err
}
p, err := parser.Parse(bytes.NewReader(dockerfileData))
if err != nil {
return nil, err
}
dockerStages, dockerMetaArgs, err := instructions.Parse(p.AST)
if err != nil {
return nil, err
}
frontend.ResolveDockerStagesFromValue(dockerStages)
dockerTargetIndex, err := frontend.GetDockerTargetStageIndex(dockerStages, dockerfileImageConfig.Target)
if err != nil {
return nil, err
}
ds := stage.NewDockerStages(
dockerStages,
util.MapStringInterfaceToMapStringString(dockerfileImageConfig.Args),
dockerMetaArgs,
dockerTargetIndex,
)
baseStageOptions := &stage.BaseStageOptions{
TargetPlatform: opts.TargetPlatform,
ImageName: dockerfileImageConfig.Name,
ProjectName: opts.ProjectName,
}
dockerfileStage := stage.GenerateFullDockerfileStage(
stage.NewDockerRunArgs(
dockerfileData,
dockerfileImageConfig.Dockerfile,
dockerfileImageConfig.Target,
dockerfileImageConfig.Context,
dockerfileImageConfig.ContextAddFiles,
dockerfileImageConfig.Args,
dockerfileImageConfig.AddHost,
dockerfileImageConfig.Network,
dockerfileImageConfig.SSH,
),
ds,
stage.NewContextChecksum(dockerIgnorePathMatcher),
baseStageOptions,
dockerfileImageConfig.Dependencies,
)
img.stages = append(img.stages, dockerfileStage)
logboek.Context(ctx).Info().LogFDetails("Using stage %s\n", dockerfileStage.Name())
return img, nil
}
func createDockerIgnorePathMatcher(ctx context.Context, giterminismMgr giterminism_manager.Interface, contextGitSubDir, dockerfileRelToContextPath string) (path_matcher.PathMatcher, error) {
var dockerIgnorePatterns []string
for _, dockerIgnoreRelToContextPath := range []string{
dockerfileRelToContextPath + ".dockerignore",
".dockerignore",
} {
relDockerIgnorePath := filepath.Join(contextGitSubDir, dockerIgnoreRelToContextPath)
if exist, err := giterminismMgr.FileReader().IsDockerignoreExistAnywhere(ctx, relDockerIgnorePath); err != nil {
return nil, err
} else if !exist {
continue
}
dockerIgnore, err := giterminismMgr.FileReader().ReadDockerignore(ctx, relDockerIgnorePath)
if err != nil {
return nil, err
}
r := bytes.NewReader(dockerIgnore)
dockerIgnorePatterns, err = dockerignore.ReadAll(r)
if err != nil {
return nil, fmt.Errorf("unable to read %q file: %w", dockerIgnoreRelToContextPath, err)
}
break
}
dockerIgnorePathMatcher := path_matcher.NewPathMatcher(path_matcher.PathMatcherOptions{
BasePath: filepath.Join(giterminismMgr.RelativeToGitProjectDir(), contextGitSubDir),
DockerignorePatterns: dockerIgnorePatterns,
})
dockerfileRelToGitPath := filepath.Join(giterminismMgr.RelativeToGitProjectDir(), contextGitSubDir, dockerfileRelToContextPath)
if !dockerIgnorePathMatcher.IsPathMatched(dockerfileRelToGitPath) {
logboek.Context(ctx).Warn().LogLn("WARNING: There is no way to ignore the Dockerfile due to docker limitation when building an image for a compressed context that reads from STDIN.")
logboek.Context(ctx).Warn().LogF("WARNING: To hide this message, remove the Dockerfile ignore rule or add an exception rule.\n")
exceptionRule := "!" + dockerfileRelToContextPath
dockerIgnorePatterns = append(dockerIgnorePatterns, exceptionRule)
dockerIgnorePathMatcher = path_matcher.NewPathMatcher(path_matcher.PathMatcherOptions{
BasePath: filepath.Join(giterminismMgr.RelativeToGitProjectDir(), contextGitSubDir),
DockerignorePatterns: dockerIgnorePatterns,
})
}
return dockerIgnorePathMatcher, nil
}