Deprecate Snapshot build

Existing snapshot code will no longer work from VNDK deprecation, but it
can give confusion to users if we keep code for the snapshot - and it
adds complexity on existing code while it is not in use. This change
removes all snapshot definition except host snapshot and its usage.

Bug: 330100430
Bug: 332986564
Test: AOSP CF build succeeded
Change-Id: Ieb6fa43d5e38315c662ce997bc305b744b367c24

etc/prebuilt_etc.go

@@ -28,7 +28,6 @@ package etc
 // various `prebuilt_*` mutators.
 
 import (
-	"encoding/json"
 	"fmt"
 	"path/filepath"
 	"strings"
@@ -36,7 +35,6 @@ import (
 	"github.com/google/blueprint/proptools"
 
 	"android/soong/android"
-	"android/soong/snapshot"
 )
 
 var pctx = android.NewPackageContext("android/soong/etc")
@@ -46,7 +44,6 @@ var pctx = android.NewPackageContext("android/soong/etc")
 func init() {
 	pctx.Import("android/soong/android")
 	RegisterPrebuiltEtcBuildComponents(android.InitRegistrationContext)
-	snapshot.RegisterSnapshotAction(generatePrebuiltSnapshot)
 }
 
 func RegisterPrebuiltEtcBuildComponents(ctx android.RegistrationContext) {
@@ -142,9 +139,6 @@ type PrebuiltEtc struct {
 	android.ModuleBase
 	android.DefaultableModuleBase
 
-	snapshot.VendorSnapshotModuleInterface
-	snapshot.RecoverySnapshotModuleInterface
-
 	properties       prebuiltEtcProperties
 	subdirProperties prebuiltSubdirProperties
 
@@ -305,14 +299,6 @@ func (p *PrebuiltEtc) InVendor() bool {
 	return p.ModuleBase.InstallInVendor()
 }
 
-func (p *PrebuiltEtc) ExcludeFromVendorSnapshot() bool {
-	return false
-}
-
-func (p *PrebuiltEtc) ExcludeFromRecoverySnapshot() bool {
-	return false
-}
-
 func (p *PrebuiltEtc) installBaseDir(ctx android.ModuleContext) string {
 	// If soc install dir was specified and SOC specific is set, set the installDirPath to the
 	// specified socInstallDirBase.
@@ -686,121 +672,3 @@ func PrebuiltRFSAFactory() android.Module {
 	android.InitDefaultableModule(module)
 	return module
 }
-
-// Copy file into the snapshot
-func copyFile(ctx android.SingletonContext, path android.Path, out string, fake bool) android.OutputPath {
-	if fake {
-		// Create empty file instead for the fake snapshot
-		return snapshot.WriteStringToFileRule(ctx, "", out)
-	} else {
-		return snapshot.CopyFileRule(pctx, ctx, path, out)
-	}
-}
-
-// Check if the module is target of the snapshot
-func isSnapshotAware(ctx android.SingletonContext, m *PrebuiltEtc, image snapshot.SnapshotImage) bool {
-	if !m.Enabled() {
-		return false
-	}
-
-	// Skip if the module is not included in the image
-	if !image.InImage(m)() {
-		return false
-	}
-
-	// When android/prebuilt.go selects between source and prebuilt, it sets
-	// HideFromMake on the other one to avoid duplicate install rules in make.
-	if m.IsHideFromMake() {
-		return false
-	}
-
-	// There are some prebuilt_etc module with multiple definition of same name.
-	// Check if the target would be included from the build
-	if !m.ExportedToMake() {
-		return false
-	}
-
-	// Skip if the module is in the predefined path list to skip
-	if image.IsProprietaryPath(ctx.ModuleDir(m), ctx.DeviceConfig()) {
-		return false
-	}
-
-	// Skip if the module should be excluded
-	if image.ExcludeFromSnapshot(m) || image.ExcludeFromDirectedSnapshot(ctx.DeviceConfig(), m.BaseModuleName()) {
-		return false
-	}
-
-	// Skip from other exceptional cases
-	if m.Target().Os.Class != android.Device {
-		return false
-	}
-	if m.Target().NativeBridge == android.NativeBridgeEnabled {
-		return false
-	}
-
-	return true
-}
-
-func generatePrebuiltSnapshot(s snapshot.SnapshotSingleton, ctx android.SingletonContext, snapshotArchDir string) snapshot.SnapshotPaths {
-	/*
-		Snapshot zipped artifacts directory structure for etc modules:
-		{SNAPSHOT_ARCH}/
-			arch-{TARGET_ARCH}-{TARGET_ARCH_VARIANT}/
-				etc/
-					(prebuilt etc files)
-			arch-{TARGET_2ND_ARCH}-{TARGET_2ND_ARCH_VARIANT}/
-				etc/
-					(prebuilt etc files)
-			NOTICE_FILES/
-				(notice files)
-	*/
-	var snapshotOutputs android.Paths
-	var snapshotNotices android.Paths
-	installedNotices := make(map[string]bool)
-
-	ctx.VisitAllModules(func(module android.Module) {
-		m, ok := module.(*PrebuiltEtc)
-		if !ok {
-			return
-		}
-
-		if !isSnapshotAware(ctx, m, s.Image) {
-			return
-		}
-
-		targetArch := "arch-" + m.Target().Arch.ArchType.String()
-
-		snapshotLibOut := filepath.Join(snapshotArchDir, targetArch, "etc", m.BaseModuleName())
-		outputs, _ := m.OutputFiles("")
-		for _, output := range outputs {
-			cp := copyFile(ctx, output, snapshotLibOut, s.Fake)
-			snapshotOutputs = append(snapshotOutputs, cp)
-		}
-
-		prop := snapshot.SnapshotJsonFlags{}
-		propOut := snapshotLibOut + ".json"
-		prop.InitBaseSnapshotProps(m)
-		prop.RelativeInstallPath = m.SubDir()
-
-		if m.properties.Filename != nil {
-			prop.Filename = *m.properties.Filename
-		}
-
-		j, err := json.Marshal(prop)
-		if err != nil {
-			ctx.Errorf("json marshal to %q failed: %#v", propOut, err)
-			return
-		}
-		snapshotOutputs = append(snapshotOutputs, snapshot.WriteStringToFileRule(ctx, string(j), propOut))
-
-		for _, notice := range m.EffectiveLicenseFiles() {
-			if _, ok := installedNotices[notice.String()]; !ok {
-				installedNotices[notice.String()] = true
-				snapshotNotices = append(snapshotNotices, notice)
-			}
-		}
-
-	})
-
-	return snapshot.SnapshotPaths{OutputFiles: snapshotOutputs, NoticeFiles: snapshotNotices}
-}