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binary.go
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binary.go
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// Copyright 2022 Namespace Labs Inc; All rights reserved.
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
package cuefrontend
import (
"bytes"
"context"
"encoding/json"
"cuelang.org/go/cue"
"github.com/docker/go-units"
"namespacelabs.dev/foundation/internal/fnerrors"
"namespacelabs.dev/foundation/internal/frontend/fncue"
"namespacelabs.dev/foundation/internal/parsing"
"namespacelabs.dev/foundation/internal/parsing/invariants"
"namespacelabs.dev/foundation/schema"
"namespacelabs.dev/foundation/std/pkggraph"
)
type cueBinary struct {
Name string `json:"name,omitempty"`
Config *schema.BinaryConfig `json:"config,omitempty"`
From *cueImageBuildPlan `json:"from,omitempty"`
BuildPlan *cueLayeredImageBuildPlan `json:"build_plan,omitempty"`
Labels map[string]string `json:"labels"`
}
type cueLayeredImageBuildPlan struct {
LayerBuildPlan []*cueImageBuildPlan
}
var _ json.Unmarshaler = &cueLayeredImageBuildPlan{}
type cueImageBuildPlan struct {
Prebuilt string `json:"prebuilt,omitempty"`
GoPackage string `json:"go_package,omitempty"`
GoBuild *schema.ImageBuildPlan_GoBuild `json:"go_build,omitempty"`
Dockerfile string `json:"dockerfile,omitempty"`
DockerBuild *schema.ImageBuildPlan_DockerBuild `json:"docker_build,omitempty"`
LlbPlan *cueImageBuildPlan_LLBPlan `json:"llb_plan,omitempty"`
NixFlake string `json:"nix_flake,omitempty"`
Deprecated_SnapshotFiles []string `json:"snapshot_files,omitempty"` // Use `files` instead.
Files []string `json:"files,omitempty"`
AlpineBuild *schema.ImageBuildPlan_AlpineBuild `json:"alpine_build,omitempty"`
NodejsBuild *schema.NodejsBuild `json:"nodejs_build,omitempty"`
Binary string `json:"binary,omitempty"`
FilesFrom *cueImageBuildPlan_FilesFrom `json:"files_from,omitempty"`
MakeFilesystemImage *cueImageBuildPlan_MakeFilesystemImage `json:"make_fs_image,omitempty"`
ImageID string `json:"image_id,omitempty"`
}
type cueImageBuildPlan_LLBPlan struct {
OutputOf cueBinary `json:"output_of,omitempty"`
}
type cueImageBuildPlan_FilesFrom struct {
From cueImageBuildPlan `json:"from"`
Files []string `json:"files"`
TargetDir string `json:"target_dir"`
}
type cueImageBuildPlan_MakeFilesystemImage struct {
From cueImageBuildPlan `json:"from"`
Target string `json:"target"`
Kind string `json:"kind"`
Size string `json:"size"`
}
func parseCueBinary(ctx context.Context, pl parsing.EarlyPackageLoader, loc pkggraph.Location, parent, v *fncue.CueV) (*schema.Binary, error) {
// Ensure all fields are bound.
if err := v.Val.Validate(cue.Concrete(true)); err != nil {
return nil, err
}
var srcBin cueBinary
if err := v.Val.Decode(&srcBin); err != nil {
return nil, err
}
bin, err := srcBin.ToSchema(ctx, pl, loc)
if err != nil {
return nil, err
}
return bin, nil
}
func (srcBin cueBinary) ToSchema(ctx context.Context, pl parsing.EarlyPackageLoader, loc pkggraph.Location) (*schema.Binary, error) {
bin := &schema.Binary{
Name: srcBin.Name,
Config: srcBin.Config,
}
if srcBin.BuildPlan != nil {
var err error
bin.BuildPlan, err = srcBin.BuildPlan.ToSchema(ctx, pl, loc)
if err != nil {
return nil, err
}
}
if srcBin.From != nil {
if srcBin.BuildPlan != nil {
return nil, fnerrors.NewWithLocation(loc, "from and build_plan are exclusive -- only one can be set")
}
parsed, err := srcBin.From.ToSchema(ctx, pl, loc)
if err != nil {
return nil, err
}
bin.BuildPlan = &schema.LayeredImageBuildPlan{
LayerBuildPlan: []*schema.ImageBuildPlan{parsed},
}
}
for k, v := range srcBin.Labels {
bin.Labels = append(bin.Labels, &schema.Label{Name: k, Value: v})
}
bin.Labels = sortLabels(bin.Labels)
return bin, nil
}
func (lbp *cueLayeredImageBuildPlan) UnmarshalJSON(data []byte) error {
dec := json.NewDecoder(bytes.NewReader(data))
tok, err := dec.Token()
if err != nil {
return err
}
switch tok {
case json.Delim('['):
return json.Unmarshal(data, &lbp.LayerBuildPlan)
case json.Delim('{'):
var x struct {
LayerBuildPlan []*cueImageBuildPlan `json:"layer_build_plan,omitempty"`
}
if err := json.Unmarshal(data, &x); err != nil {
return err
}
lbp.LayerBuildPlan = x.LayerBuildPlan
return nil
default:
return fnerrors.BadInputError("unexpected input, expected array or object")
}
}
func (lbp *cueLayeredImageBuildPlan) ToSchema(ctx context.Context, pl parsing.EarlyPackageLoader, loc pkggraph.Location) (*schema.LayeredImageBuildPlan, error) {
plan := &schema.LayeredImageBuildPlan{}
for _, def := range lbp.LayerBuildPlan {
parsed, err := def.ToSchema(ctx, pl, loc)
if err != nil {
return nil, err
}
plan.LayerBuildPlan = append(plan.LayerBuildPlan, parsed)
}
return plan, nil
}
func (bp cueImageBuildPlan) ToSchema(ctx context.Context, pl parsing.EarlyPackageLoader, loc pkggraph.Location) (*schema.ImageBuildPlan, error) {
plan := &schema.ImageBuildPlan{}
var set []string
if bp.Prebuilt != "" {
plan.ImageId = bp.Prebuilt
set = append(set, "prebuilt")
}
if bp.GoPackage != "" {
plan.GoPackage = bp.GoPackage
set = append(set, "go_package")
}
if bp.GoBuild != nil {
plan.GoBuild = bp.GoBuild
set = append(set, "go_build")
}
if bp.Dockerfile != "" {
plan.Dockerfile = bp.Dockerfile
set = append(set, "dockerfile")
}
if bp.DockerBuild != nil {
plan.DockerBuild = bp.DockerBuild
set = append(set, "dockerbuild")
}
if bp.NodejsBuild != nil {
plan.NodejsBuild = bp.NodejsBuild
set = append(set, "nodejs_build")
}
if bp.LlbPlan != nil {
p, err := bp.LlbPlan.OutputOf.ToSchema(ctx, pl, loc)
if err != nil {
return nil, err
}
plan.LlbPlan = &schema.ImageBuildPlan_LLBPlan{OutputOf: p}
set = append(set, "llb_plan")
}
if bp.NixFlake != "" {
plan.NixFlake = bp.NixFlake
set = append(set, "nix_flake")
}
if bp.Deprecated_SnapshotFiles != nil {
plan.SnapshotFiles = bp.Deprecated_SnapshotFiles
set = append(set, "snapshot_files")
}
if bp.Files != nil {
plan.SnapshotFiles = bp.Files
set = append(set, "files")
}
if bp.AlpineBuild != nil {
plan.AlpineBuild = bp.AlpineBuild
set = append(set, "alpine_build")
}
if bp.FilesFrom != nil {
from, err := bp.FilesFrom.From.ToSchema(ctx, pl, loc)
if err != nil {
return nil, err
}
plan.FilesFrom = &schema.ImageBuildPlan_FilesFrom{
From: from,
Files: bp.FilesFrom.Files,
TargetDir: bp.FilesFrom.TargetDir,
}
set = append(set, "files_from")
}
if bp.MakeFilesystemImage != nil {
from, err := bp.MakeFilesystemImage.From.ToSchema(ctx, pl, loc)
if err != nil {
return nil, err
}
plan.MakeFsImage = &schema.ImageBuildPlan_MakeFilesystemImage{
From: from,
Target: bp.MakeFilesystemImage.Target,
Kind: bp.MakeFilesystemImage.Kind,
}
if bp.MakeFilesystemImage.Size != "" {
sizeBytes, err := units.FromHumanSize(bp.MakeFilesystemImage.Size)
if err != nil {
return nil, err
}
plan.MakeFsImage.Size = sizeBytes
}
set = append(set, "make_fs_image")
}
if bp.Binary != "" {
ref, err := schema.StrictParsePackageRef(bp.Binary)
if err != nil {
return nil, err
}
if err := invariants.EnsurePackageLoaded(ctx, pl, loc.PackageName, ref); err != nil {
return nil, err
}
plan.Binary = ref
set = append(set, "binary")
}
if bp.ImageID != "" {
plan.ImageId = bp.ImageID
set = append(set, "image_id")
}
if len(set) == 0 {
return nil, fnerrors.NewWithLocation(loc, "plan is missing at least one instruction")
} else if len(set) > 1 {
return nil, fnerrors.NewWithLocation(loc, "build plan must include exactly one instruction, saw %v", set)
}
return plan, nil
}