Supported python build in host side.

The base module handles all the common functionalites, such as version
compatibilty check, version variations split, source file format check,
source/data file duplicate check.

The library/binary module focuses on how to generate binary build actions,
such as setting up stub script, zipping, filling in __init__.py in
runfiles dir tree.

Bug: b/31676493
Test: go test under python package

Change-Id: I06608369f350f7195873d459e1c8d1bdb811e77e
This commit is contained in:
Nan Zhang 2017-02-27 10:12:13 -08:00
parent 7c34c4c8eb
commit db0b9a3cf3
10 changed files with 1494 additions and 16 deletions

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@ -209,6 +209,25 @@ bootstrap_go_package {
pluginFor: ["soong_build"],
}
bootstrap_go_package {
name: "soong-python",
pkgPath: "android/soong/python",
deps: [
"blueprint",
"soong-android",
],
srcs: [
"python/binary.go",
"python/builder.go",
"python/library.go",
"python/python.go",
],
testSrcs: [
"python/python_test.go",
],
pluginFor: ["soong_build"],
}
//
// Defaults to enable various configurations of host bionic
//

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@ -217,13 +217,22 @@ func translateAndroidMkModule(ctx blueprint.SingletonContext, w io.Writer, mod b
host := false
switch amod.Os().Class {
case Host:
fmt.Fprintln(w, "LOCAL_MODULE_HOST_ARCH :=", archStr)
// Make cannot identify LOCAL_MODULE_HOST_ARCH:= common.
if archStr != "common" {
fmt.Fprintln(w, "LOCAL_MODULE_HOST_ARCH :=", archStr)
}
host = true
case HostCross:
fmt.Fprintln(w, "LOCAL_MODULE_HOST_CROSS_ARCH :=", archStr)
// Make cannot identify LOCAL_MODULE_HOST_CROSS_ARCH:= common.
if archStr != "common" {
fmt.Fprintln(w, "LOCAL_MODULE_HOST_CROSS_ARCH :=", archStr)
}
host = true
case Device:
fmt.Fprintln(w, "LOCAL_MODULE_TARGET_ARCH :=", archStr)
// Make cannot identify LOCAL_MODULE_TARGET_ARCH:= common.
if archStr != "common" {
fmt.Fprintln(w, "LOCAL_MODULE_TARGET_ARCH :=", archStr)
}
if len(amod.commonProperties.Logtags) > 0 {
fmt.Fprintln(w, "LOCAL_LOGTAGS_FILES := ", strings.Join(amod.commonProperties.Logtags, " "))

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@ -189,7 +189,8 @@ var BuildOs = func() OsType {
}()
var (
osTypeList []OsType
osTypeList []OsType
commonTargetMap = make(map[string]Target)
NoOsType OsType
Linux = NewOsType("linux", Host, false)
@ -236,6 +237,13 @@ func NewOsType(name string, class OsClass, defDisabled bool) OsType {
DefaultDisabled: defDisabled,
}
osTypeList = append(osTypeList, os)
if _, found := commonTargetMap[name]; found {
panic(fmt.Errorf("Found Os type duplicate during OsType registration: %q", name))
} else {
commonTargetMap[name] = Target{Os: os, Arch: Arch{ArchType: Common}}
}
return os
}
@ -249,15 +257,6 @@ func osByName(name string) OsType {
return NoOsType
}
var (
commonTarget = Target{
Os: Android,
Arch: Arch{
ArchType: Common,
},
}
)
type Target struct {
Os OsType
Arch Arch
@ -989,6 +988,20 @@ func filterMultilibTargets(targets []Target, multilib string) []Target {
return ret
}
func getCommonTargets(targets []Target) []Target {
var ret []Target
set := make(map[string]bool)
for _, t := range targets {
if _, found := set[t.Os.String()]; !found {
set[t.Os.String()] = true
ret = append(ret, commonTargetMap[t.Os.String()])
}
}
return ret
}
// Use the module multilib setting to select one or more targets from a target list
func decodeMultilib(multilib string, targets []Target, prefer32 bool) ([]Target, error) {
buildTargets := []Target{}
@ -1001,7 +1014,7 @@ func decodeMultilib(multilib string, targets []Target, prefer32 bool) ([]Target,
}
switch multilib {
case "common":
buildTargets = append(buildTargets, commonTarget)
buildTargets = append(buildTargets, getCommonTargets(targets)...)
case "both":
if prefer32 {
buildTargets = append(buildTargets, filterMultilibTargets(targets, "lib32")...)

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@ -81,8 +81,18 @@ func registerMutators(ctx *blueprint.Context) {
}
func RegisterTestMutators(ctx *blueprint.Context) {
mutators := registerMutatorsContext{}
mutators := &registerMutatorsContext{}
register := func(funcs []RegisterMutatorFunc) {
for _, f := range funcs {
f(mutators)
}
}
register(testPreDeps)
mutators.BottomUp("deps", depsMutator).Parallel()
register(testPostDeps)
registerMutatorsToContext(ctx, mutators.mutators)
}
@ -97,7 +107,7 @@ type RegisterMutatorsContext interface {
type RegisterMutatorFunc func(RegisterMutatorsContext)
var preArch, preDeps, postDeps []RegisterMutatorFunc
var preArch, preDeps, postDeps, testPreDeps, testPostDeps []RegisterMutatorFunc
func PreArchMutators(f RegisterMutatorFunc) {
preArch = append(preArch, f)
@ -111,6 +121,14 @@ func PostDepsMutators(f RegisterMutatorFunc) {
postDeps = append(postDeps, f)
}
func TestPreDepsMutators(f RegisterMutatorFunc) {
testPreDeps = append(testPreDeps, f)
}
func TeststPostDepsMutators(f RegisterMutatorFunc) {
testPostDeps = append(testPostDeps, f)
}
type AndroidTopDownMutator func(TopDownMutatorContext)
type TopDownMutatorContext interface {

235
python/binary.go Normal file
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@ -0,0 +1,235 @@
// Copyright 2017 Google 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.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package python
// This file contains the module types for building Python binary.
import (
"fmt"
"io"
"path/filepath"
"strings"
"github.com/google/blueprint"
"android/soong/android"
)
func init() {
android.RegisterModuleType("python_binary_host", PythonBinaryHostFactory)
}
type PythonBinaryProperties struct {
// the name of the source file that is the main entry point of the program.
// this file must also be listed in srcs.
// If left unspecified, module name is used instead.
// If name doesnt match any filename in srcs, main must be specified.
Main string
// set the name of the output binary.
Stem string
// append to the name of the output binary.
Suffix string
}
type PythonBinary struct {
pythonBaseModule
binaryProperties PythonBinaryProperties
// soong_zip arguments from all its dependencies.
depsParSpecs []parSpec
// Python runfiles paths from all its dependencies.
depsPyRunfiles []string
// the installation path for Python binary.
installPath android.OutputPath
}
var _ PythonSubModule = (*PythonBinary)(nil)
var (
stubTemplateHost = "build/soong/python/scripts/stub_template_host.txt"
)
func PythonBinaryHostFactory() (blueprint.Module, []interface{}) {
module := &PythonBinary{}
return InitPythonBaseModule(&module.pythonBaseModule, module, android.HostSupportedNoCross,
&module.binaryProperties)
}
func (p *PythonBinary) GeneratePythonBuildActions(ctx android.ModuleContext) {
p.pythonBaseModule.GeneratePythonBuildActions(ctx)
// no Python source file for compiling par file.
if len(p.pythonBaseModule.srcsPathMappings) == 0 && len(p.depsPyRunfiles) == 0 {
return
}
// the runfiles packages needs to be populated with "__init__.py".
newPyPkgs := []string{}
// the set to de-duplicate the new Python packages above.
newPyPkgSet := make(map[string]bool)
// the runfiles dirs have been treated as packages.
existingPyPkgSet := make(map[string]bool)
wholePyRunfiles := []string{}
for _, path := range p.pythonBaseModule.srcsPathMappings {
wholePyRunfiles = append(wholePyRunfiles, path.dest)
}
wholePyRunfiles = append(wholePyRunfiles, p.depsPyRunfiles...)
// find all the runfiles dirs which have been treated as packages.
for _, path := range wholePyRunfiles {
if filepath.Base(path) != initFileName {
continue
}
existingPyPkg := PathBeforeLastSlash(path)
if _, found := existingPyPkgSet[existingPyPkg]; found {
panic(fmt.Errorf("found init file path duplicates: %q for module: %q.",
path, ctx.ModuleName()))
} else {
existingPyPkgSet[existingPyPkg] = true
}
parentPath := PathBeforeLastSlash(existingPyPkg)
populateNewPyPkgs(parentPath, existingPyPkgSet, newPyPkgSet, &newPyPkgs)
}
// create new packages under runfiles tree.
for _, path := range wholePyRunfiles {
if filepath.Base(path) == initFileName {
continue
}
parentPath := PathBeforeLastSlash(path)
populateNewPyPkgs(parentPath, existingPyPkgSet, newPyPkgSet, &newPyPkgs)
}
main := p.getPyMainFile(ctx)
if main == "" {
return
}
interp := p.getInterpreter(ctx)
if interp == "" {
return
}
// we need remove "runfiles/" suffix since stub script starts
// searching for main file in each sub-dir of "runfiles" directory tree.
binFile := registerBuildActionForParFile(ctx, p.getInterpreter(ctx),
strings.TrimPrefix(main, runFiles+"/"), p.getStem(ctx),
newPyPkgs, append(p.depsParSpecs, p.pythonBaseModule.parSpec))
// install par file.
p.installPath = ctx.InstallFile(
android.PathForModuleInstall(ctx, "bin"), binFile)
}
// get interpreter path.
func (p *PythonBinary) getInterpreter(ctx android.ModuleContext) string {
var interp string
switch p.pythonBaseModule.properties.ActualVersion {
case pyVersion2:
interp = "python2"
case pyVersion3:
interp = "python3"
default:
panic(fmt.Errorf("unknown Python actualVersion: %q for module: %q.",
p.properties.ActualVersion, ctx.ModuleName()))
}
return interp
}
// find main program path within runfiles tree.
func (p *PythonBinary) getPyMainFile(ctx android.ModuleContext) string {
var main string
if p.binaryProperties.Main == "" {
main = p.BaseModuleName() + pyExt
} else {
main = p.binaryProperties.Main
}
for _, path := range p.pythonBaseModule.srcsPathMappings {
if main == path.src.Rel() {
return path.dest
}
}
ctx.PropertyErrorf("main", "%q is not listed in srcs.", main)
return ""
}
func (p *PythonBinary) getStem(ctx android.ModuleContext) string {
stem := ctx.ModuleName()
if p.binaryProperties.Stem != "" {
stem = p.binaryProperties.Stem
}
return stem + p.binaryProperties.Suffix
}
// Sets the given directory and all its ancestor directories as Python packages.
func populateNewPyPkgs(pkgPath string, existingPyPkgSet,
newPyPkgSet map[string]bool, newPyPkgs *[]string) {
for pkgPath != "" {
if _, found := existingPyPkgSet[pkgPath]; found {
break
}
if _, found := newPyPkgSet[pkgPath]; !found {
newPyPkgSet[pkgPath] = true
*newPyPkgs = append(*newPyPkgs, pkgPath)
// Gets its ancestor directory by trimming last slash.
pkgPath = PathBeforeLastSlash(pkgPath)
} else {
break
}
}
}
// filepath.Dir("abc") -> "." and filepath.Dir("/abc") -> "/". However,
// the PathBeforeLastSlash() will return "" for both cases above.
func PathBeforeLastSlash(path string) string {
if idx := strings.LastIndex(path, "/"); idx != -1 {
return path[:idx]
}
return ""
}
func (p *PythonBinary) GeneratePythonAndroidMk() (ret android.AndroidMkData, err error) {
// Soong installation is only supported for host modules. Have Make
// installation trigger Soong installation.
if p.pythonBaseModule.Target().Os.Class == android.Host {
ret.OutputFile = android.OptionalPathForPath(p.installPath)
}
ret.Class = "EXECUTABLES"
ret.Extra = append(ret.Extra, func(w io.Writer, outputFile android.Path) error {
path := p.installPath.RelPathString()
dir, file := filepath.Split(path)
stem := strings.TrimSuffix(file, filepath.Ext(file))
fmt.Fprintln(w, "LOCAL_MODULE_SUFFIX := "+filepath.Ext(file))
fmt.Fprintln(w, "LOCAL_MODULE_PATH := $(OUT_DIR)/"+filepath.Clean(dir))
fmt.Fprintln(w, "LOCAL_MODULE_STEM := "+stem)
return nil
})
return
}

146
python/builder.go Normal file
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@ -0,0 +1,146 @@
// Copyright 2017 Google 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.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package python
// This file contains Ninja build actions for building Python program.
import (
"strings"
"android/soong/android"
"github.com/google/blueprint"
_ "github.com/google/blueprint/bootstrap"
)
var (
pctx = android.NewPackageContext("android/soong/python")
par = pctx.AndroidStaticRule("par",
blueprint.RuleParams{
Command: `touch $initFile && ` +
`sed -e 's/%interpreter%/$interp/g' -e 's/%main%/$main/g' $template > $stub && ` +
`$parCmd -o $parFile $parArgs && echo '#!/usr/bin/env python' | cat - $parFile > $out && ` +
`chmod +x $out && (rm -f $initFile; rm -f $stub; rm -f $parFile)`,
CommandDeps: []string{"$parCmd", "$template"},
Description: "build par $out",
},
"initFile", "interp", "main", "template", "stub", "parCmd", "parFile", "parArgs")
)
func init() {
pctx.Import("github.com/google/blueprint/bootstrap")
pctx.Import("android/soong/common")
pctx.HostBinToolVariable("parCmd", "soong_zip")
}
type fileListSpec struct {
fileList android.Path
relativeRoot string
}
type parSpec struct {
rootPrefix string
fileListSpecs []fileListSpec
}
func (p parSpec) soongParArgs() string {
ret := "-P " + p.rootPrefix
for _, spec := range p.fileListSpecs {
ret += " -C " + spec.relativeRoot + " -l " + spec.fileList.String()
}
return ret
}
func registerBuildActionForModuleFileList(ctx android.ModuleContext,
name string, files android.Paths) android.Path {
fileList := android.PathForModuleOut(ctx, name+".list")
content := []string{}
for _, file := range files {
content = append(content, file.String())
}
ctx.ModuleBuild(pctx, android.ModuleBuildParams{
Rule: android.WriteFile,
Output: fileList,
Implicits: files,
Args: map[string]string{
"content": strings.Join(content, "\n"),
},
})
return fileList
}
func registerBuildActionForParFile(ctx android.ModuleContext,
interpreter, main, binName string, newPyPkgs []string, parSpecs []parSpec) android.Path {
// intermediate output path for __init__.py
initFile := android.PathForModuleOut(ctx, initFileName).String()
// the path of stub_template_host.txt from source tree.
template := android.PathForSource(ctx, stubTemplateHost)
// intermediate output path for __main__.py
stub := android.PathForModuleOut(ctx, mainFileName).String()
// intermediate output path for par file.
parFile := android.PathForModuleOut(ctx, binName+parFileExt)
// intermediate output path for bin executable.
binFile := android.PathForModuleOut(ctx, binName)
// implicit dependency for parFile build action.
implicits := android.Paths{}
for _, p := range parSpecs {
for _, f := range p.fileListSpecs {
implicits = append(implicits, f.fileList)
}
}
parArgs := []string{}
parArgs = append(parArgs, "-C "+strings.TrimSuffix(stub, mainFileName)+" -f "+stub)
parArgs = append(parArgs, "-C "+strings.TrimSuffix(initFile, initFileName)+" -f "+initFile)
for _, pkg := range newPyPkgs {
parArgs = append(parArgs, "-P "+pkg+" -f "+initFile)
}
for _, p := range parSpecs {
parArgs = append(parArgs, p.soongParArgs())
}
ctx.ModuleBuild(pctx, android.ModuleBuildParams{
Rule: par,
Output: binFile,
Implicits: implicits,
Args: map[string]string{
"initFile": initFile,
// the "\" isn't being interpreted by regex parser, it's being
// interpreted in the string literal.
"interp": strings.Replace(interpreter, "/", `\/`, -1),
"main": strings.Replace(main, "/", `\/`, -1),
"template": template.String(),
"stub": stub,
"parFile": parFile.String(),
"parArgs": strings.Join(parArgs, " "),
},
})
return binFile
}

43
python/library.go Normal file
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@ -0,0 +1,43 @@
// Copyright 2017 Google 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.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package python
// This file contains the module types for building Python library.
import (
"github.com/google/blueprint"
"android/soong/android"
)
func init() {
android.RegisterModuleType("python_library_host", PythonLibraryHostFactory)
}
type PythonLibrary struct {
pythonBaseModule
}
var _ PythonSubModule = (*PythonLibrary)(nil)
func PythonLibraryHostFactory() (blueprint.Module, []interface{}) {
module := &PythonLibrary{}
return InitPythonBaseModule(&module.pythonBaseModule, module, android.HostSupportedNoCross)
}
func (p *PythonLibrary) GeneratePythonAndroidMk() (ret android.AndroidMkData, err error) {
return
}

448
python/python.go Normal file
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@ -0,0 +1,448 @@
// Copyright 2017 Google 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.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package python
// This file contains the "Base" module type for building Python program.
import (
"fmt"
"path/filepath"
"regexp"
"sort"
"strings"
"github.com/google/blueprint"
"android/soong/android"
)
func init() {
android.PreDepsMutators(func(ctx android.RegisterMutatorsContext) {
ctx.BottomUp("version_split", versionSplitMutator()).Parallel()
})
}
// the version properties that apply to python libraries and binaries.
type PythonVersionProperties struct {
// true, if the module is required to be built with this version.
Enabled *bool
// if specified, common src files are converted to specific version with converter tool.
// Converter bool
// non-empty list of .py files under this strict Python version.
// srcs may reference the outputs of other modules that produce source files like genrule
// or filegroup using the syntax ":module".
Srcs []string
// list of the Python libraries under this Python version.
Libs []string
}
// properties that apply to python libraries and binaries.
type PythonBaseModuleProperties struct {
// the package path prefix within the output artifact at which to place the source/data
// files of the current module.
// eg. Pkg_path = "a/b/c"; Other packages can reference this module by using
// (from a.b.c import ...) statement.
// if left unspecified, all the source/data files of current module are copied to
// "runfiles/" tree directory directly.
Pkg_path string
// list of source (.py) files compatible both with Python2 and Python3 used to compile the
// Python module.
// srcs may reference the outputs of other modules that produce source files like genrule
// or filegroup using the syntax ":module".
// Srcs has to be non-empty.
Srcs []string
// list of files or filegroup modules that provide data that should be installed alongside
// the test. the file extension can be arbitrary except for (.py).
Data []string
// list of the Python libraries compatible both with Python2 and Python3.
Libs []string
Version struct {
// all the "srcs" or Python dependencies that are to be used only for Python2.
Py2 PythonVersionProperties
// all the "srcs" or Python dependencies that are to be used only for Python3.
Py3 PythonVersionProperties
}
// the actual version each module uses after variations created.
// this property name is hidden from users' perspectives, and soong will populate it during
// runtime.
ActualVersion string `blueprint:"mutated"`
}
type pathMapping struct {
dest string
src android.Path
}
type pythonBaseModule struct {
android.ModuleBase
subModule PythonSubModule
properties PythonBaseModuleProperties
// the Python files of current module after expanding source dependencies.
// pathMapping: <dest: runfile_path, src: source_path>
srcsPathMappings []pathMapping
// the data files of current module after expanding source dependencies.
// pathMapping: <dest: runfile_path, src: source_path>
dataPathMappings []pathMapping
// the soong_zip arguments for zipping current module source/data files.
parSpec parSpec
}
type PythonSubModule interface {
GeneratePythonBuildActions(ctx android.ModuleContext)
GeneratePythonAndroidMk() (ret android.AndroidMkData, err error)
}
type PythonDependency interface {
GetSrcsPathMappings() []pathMapping
GetDataPathMappings() []pathMapping
GetParSpec() parSpec
}
func (p *pythonBaseModule) GetSrcsPathMappings() []pathMapping {
return p.srcsPathMappings
}
func (p *pythonBaseModule) GetDataPathMappings() []pathMapping {
return p.dataPathMappings
}
func (p *pythonBaseModule) GetParSpec() parSpec {
return p.parSpec
}
var _ PythonDependency = (*pythonBaseModule)(nil)
var _ android.AndroidMkDataProvider = (*pythonBaseModule)(nil)
func InitPythonBaseModule(baseModule *pythonBaseModule, subModule PythonSubModule,
hod android.HostOrDeviceSupported,
props ...interface{}) (blueprint.Module, []interface{}) {
baseModule.subModule = subModule
props = append(props, &baseModule.properties)
return android.InitAndroidArchModule(baseModule, hod, android.MultilibCommon, props...)
}
// the tag used to mark dependencies within "py_libs" attribute.
type pythonDependencyTag struct {
blueprint.BaseDependencyTag
}
var pyDependencyTag pythonDependencyTag
var (
pyIdentifierRegexp = regexp.MustCompile(`^([a-z]|[A-Z]|_)([a-z]|[A-Z]|[0-9]|_)*$`)
pyExt = ".py"
pyVersion2 = "PY2"
pyVersion3 = "PY3"
initFileName = "__init__.py"
mainFileName = "__main__.py"
parFileExt = ".zip"
runFiles = "runfiles"
)
// create version variants for modules.
func versionSplitMutator() func(android.BottomUpMutatorContext) {
return func(mctx android.BottomUpMutatorContext) {
if base, ok := mctx.Module().(*pythonBaseModule); ok {
versionNames := []string{}
if base.properties.Version.Py2.Enabled != nil &&
*(base.properties.Version.Py2.Enabled) == true {
versionNames = append(versionNames, pyVersion2)
}
if !(base.properties.Version.Py3.Enabled != nil &&
*(base.properties.Version.Py3.Enabled) == false) {
versionNames = append(versionNames, pyVersion3)
}
modules := mctx.CreateVariations(versionNames...)
for i, v := range versionNames {
// set the actual version for Python module.
modules[i].(*pythonBaseModule).properties.ActualVersion = v
}
}
}
}
func (p *pythonBaseModule) DepsMutator(ctx android.BottomUpMutatorContext) {
// deps from "data".
android.ExtractSourcesDeps(ctx, p.properties.Data)
// deps from "srcs".
android.ExtractSourcesDeps(ctx, p.properties.Srcs)
switch p.properties.ActualVersion {
case pyVersion2:
// deps from "version.py2.srcs" property.
android.ExtractSourcesDeps(ctx, p.properties.Version.Py2.Srcs)
ctx.AddVariationDependencies(nil, pyDependencyTag,
uniqueLibs(ctx, p.properties.Libs, "version.py2.libs",
p.properties.Version.Py2.Libs)...)
case pyVersion3:
// deps from "version.py3.srcs" property.
android.ExtractSourcesDeps(ctx, p.properties.Version.Py3.Srcs)
ctx.AddVariationDependencies(nil, pyDependencyTag,
uniqueLibs(ctx, p.properties.Libs, "version.py3.libs",
p.properties.Version.Py3.Libs)...)
default:
panic(fmt.Errorf("unknown Python actualVersion: %q for module: %q.",
p.properties.ActualVersion, ctx.ModuleName()))
}
}
// check "libs" duplicates from current module dependencies.
func uniqueLibs(ctx android.BottomUpMutatorContext,
commonLibs []string, versionProp string, versionLibs []string) []string {
set := make(map[string]string)
ret := []string{}
// deps from "libs" property.
for _, l := range commonLibs {
if _, found := set[l]; found {
ctx.PropertyErrorf("libs", "%q has duplicates within libs.", l)
} else {
set[l] = "libs"
ret = append(ret, l)
}
}
// deps from "version.pyX.libs" property.
for _, l := range versionLibs {
if _, found := set[l]; found {
ctx.PropertyErrorf(versionProp, "%q has duplicates within %q.", set[l])
} else {
set[l] = versionProp
ret = append(ret, l)
}
}
return ret
}
func (p *pythonBaseModule) GenerateAndroidBuildActions(ctx android.ModuleContext) {
p.subModule.GeneratePythonBuildActions(ctx)
}
func (p *pythonBaseModule) GeneratePythonBuildActions(ctx android.ModuleContext) {
// expand python files from "srcs" property.
srcs := p.properties.Srcs
switch p.properties.ActualVersion {
case pyVersion2:
srcs = append(srcs, p.properties.Version.Py2.Srcs...)
case pyVersion3:
srcs = append(srcs, p.properties.Version.Py3.Srcs...)
default:
panic(fmt.Errorf("unknown Python actualVersion: %q for module: %q.",
p.properties.ActualVersion, ctx.ModuleName()))
}
expandedSrcs := ctx.ExpandSources(srcs, nil)
if len(expandedSrcs) == 0 {
ctx.ModuleErrorf("doesn't have any source files!")
}
// expand data files from "data" property.
expandedData := ctx.ExpandSources(p.properties.Data, nil)
// sanitize pkg_path.
pkg_path := p.properties.Pkg_path
if pkg_path != "" {
pkg_path = filepath.Clean(p.properties.Pkg_path)
if pkg_path == ".." || strings.HasPrefix(pkg_path, "../") ||
strings.HasPrefix(pkg_path, "/") {
ctx.PropertyErrorf("pkg_path", "%q is not a valid format.",
p.properties.Pkg_path)
return
}
// pkg_path starts from "runfiles/" implicitly.
pkg_path = filepath.Join(runFiles, pkg_path)
} else {
// pkg_path starts from "runfiles/" implicitly.
pkg_path = runFiles
}
p.genModulePathMappings(ctx, pkg_path, expandedSrcs, expandedData)
p.parSpec = p.dumpFileList(ctx, pkg_path)
p.uniqWholeRunfilesTree(ctx)
}
// generate current module unique pathMappings: <dest: runfiles_path, src: source_path>
// for python/data files.
func (p *pythonBaseModule) genModulePathMappings(ctx android.ModuleContext, pkg_path string,
expandedSrcs, expandedData android.Paths) {
// fetch <runfiles_path, source_path> pairs from "src" and "data" properties to
// check duplicates.
destToPySrcs := make(map[string]string)
destToPyData := make(map[string]string)
for _, s := range expandedSrcs {
if s.Ext() != pyExt {
ctx.PropertyErrorf("srcs", "found non (.py) file: %q!", s.String())
continue
}
runfilesPath := filepath.Join(pkg_path, s.Rel())
identifiers := strings.Split(strings.TrimSuffix(runfilesPath, pyExt), "/")
for _, token := range identifiers {
if !pyIdentifierRegexp.MatchString(token) {
ctx.PropertyErrorf("srcs", "the path %q contains invalid token %q.",
runfilesPath, token)
}
}
if fillInMap(ctx, destToPySrcs, runfilesPath, s.String(), p.Name(), p.Name()) {
p.srcsPathMappings = append(p.srcsPathMappings,
pathMapping{dest: runfilesPath, src: s})
}
}
for _, d := range expandedData {
if d.Ext() == pyExt {
ctx.PropertyErrorf("data", "found (.py) file: %q!", d.String())
continue
}
runfilesPath := filepath.Join(pkg_path, d.Rel())
if fillInMap(ctx, destToPyData, runfilesPath, d.String(), p.Name(), p.Name()) {
p.dataPathMappings = append(p.dataPathMappings,
pathMapping{dest: runfilesPath, src: d})
}
}
}
// register build actions to dump filelist to disk.
func (p *pythonBaseModule) dumpFileList(ctx android.ModuleContext, pkg_path string) parSpec {
relativeRootMap := make(map[string]android.Paths)
// the soong_zip params in order to pack current module's Python/data files.
ret := parSpec{rootPrefix: pkg_path}
pathMappings := append(p.srcsPathMappings, p.dataPathMappings...)
// "srcs" or "data" properties may have filegroup so it might happen that
// the relative root for each source path is different.
for _, path := range pathMappings {
relativeRoot := strings.TrimSuffix(path.src.String(), path.src.Rel())
if v, found := relativeRootMap[relativeRoot]; found {
relativeRootMap[relativeRoot] = append(v, path.src)
} else {
relativeRootMap[relativeRoot] = android.Paths{path.src}
}
}
var keys []string
// in order to keep stable order of soong_zip params, we sort the keys here.
for k := range relativeRootMap {
keys = append(keys, k)
}
sort.Strings(keys)
for _, k := range keys {
// use relative root as filelist name.
fileListPath := registerBuildActionForModuleFileList(
ctx, strings.Replace(k, "/", "_", -1), relativeRootMap[k])
ret.fileListSpecs = append(ret.fileListSpecs,
fileListSpec{fileList: fileListPath, relativeRoot: k})
}
return ret
}
// check Python/data files duplicates from current module and its whole dependencies.
func (p *pythonBaseModule) uniqWholeRunfilesTree(ctx android.ModuleContext) {
// fetch <runfiles_path, source_path> pairs from "src" and "data" properties to
// check duplicates.
destToPySrcs := make(map[string]string)
destToPyData := make(map[string]string)
for _, path := range p.srcsPathMappings {
destToPySrcs[path.dest] = path.src.String()
}
for _, path := range p.dataPathMappings {
destToPyData[path.dest] = path.src.String()
}
// visit all its dependencies in depth first.
ctx.VisitDepsDepthFirst(func(module blueprint.Module) {
// module can only depend on Python library.
if base, ok := module.(*pythonBaseModule); ok {
if _, ok := base.subModule.(*PythonLibrary); !ok {
panic(fmt.Errorf(
"the dependency %q of module %q is not Python library!",
ctx.ModuleName(), ctx.OtherModuleName(module)))
}
} else {
return
}
if dep, ok := module.(PythonDependency); ok {
srcs := dep.GetSrcsPathMappings()
for _, path := range srcs {
if !fillInMap(ctx, destToPySrcs,
path.dest, path.src.String(), ctx.ModuleName(),
ctx.OtherModuleName(module)) {
continue
}
// binary needs the Python runfiles paths from all its
// dependencies to fill __init__.py in each runfiles dir.
if sub, ok := p.subModule.(*PythonBinary); ok {
sub.depsPyRunfiles = append(sub.depsPyRunfiles, path.dest)
}
}
data := dep.GetDataPathMappings()
for _, path := range data {
fillInMap(ctx, destToPyData,
path.dest, path.src.String(), ctx.ModuleName(),
ctx.OtherModuleName(module))
}
// binary needs the soong_zip arguments from all its
// dependencies to generate executable par file.
if sub, ok := p.subModule.(*PythonBinary); ok {
sub.depsParSpecs = append(sub.depsParSpecs, dep.GetParSpec())
}
}
})
}
func fillInMap(ctx android.ModuleContext, m map[string]string,
key, value, curModule, otherModule string) bool {
if oldValue, found := m[key]; found {
ctx.ModuleErrorf("found two files to be placed at the same runfiles location %q."+
" First file: in module %s at path %q."+
" Second file: in module %s at path %q.",
key, curModule, oldValue, otherModule, value)
return false
} else {
m[key] = value
}
return true
}
func (p *pythonBaseModule) AndroidMk() (ret android.AndroidMkData, err error) {
return p.subModule.GeneratePythonAndroidMk()
}

456
python/python_test.go Normal file
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@ -0,0 +1,456 @@
// Copyright 2017 Google 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.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package python
import (
"errors"
"fmt"
"io/ioutil"
"os"
"path/filepath"
"reflect"
"sort"
"strings"
"testing"
"android/soong/android"
"github.com/google/blueprint"
)
type pyBinary struct {
name string
actualVersion string
pyRunfiles []string
depsPyRunfiles []string
parSpec string
depsParSpecs []string
}
var (
buildNamePrefix = "soong_python_test"
moduleVariantErrTemplate = "%s: module %q variant %q: "
pkgPathErrTemplate = moduleVariantErrTemplate +
"pkg_path: %q is not a valid format."
badIdentifierErrTemplate = moduleVariantErrTemplate +
"srcs: the path %q contains invalid token %q."
dupRunfileErrTemplate = moduleVariantErrTemplate +
"found two files to be placed at the same runfiles location %q." +
" First file: in module %s at path %q." +
" Second file: in module %s at path %q."
noSrcFileErr = moduleVariantErrTemplate + "doesn't have any source files!"
badSrcFileExtErr = moduleVariantErrTemplate + "srcs: found non (.py) file: %q!"
badDataFileExtErr = moduleVariantErrTemplate + "data: found (.py) file: %q!"
bpFile = "Blueprints"
data = []struct {
desc string
mockFiles map[string][]byte
errors []string
expectedBinaries []pyBinary
}{
{
desc: "module without any src files",
mockFiles: map[string][]byte{
bpFile: []byte(`subdirs = ["dir"]`),
filepath.Join("dir", bpFile): []byte(
`python_library_host {
name: "lib1",
}`,
),
},
errors: []string{
fmt.Sprintf(noSrcFileErr,
"dir/Blueprints:1:1", "lib1", "PY3"),
},
},
{
desc: "module with bad src file ext",
mockFiles: map[string][]byte{
bpFile: []byte(`subdirs = ["dir"]`),
filepath.Join("dir", bpFile): []byte(
`python_library_host {
name: "lib1",
srcs: [
"file1.exe",
],
}`,
),
"dir/file1.exe": nil,
},
errors: []string{
fmt.Sprintf(badSrcFileExtErr,
"dir/Blueprints:3:11", "lib1", "PY3", "dir/file1.exe"),
},
},
{
desc: "module with bad data file ext",
mockFiles: map[string][]byte{
bpFile: []byte(`subdirs = ["dir"]`),
filepath.Join("dir", bpFile): []byte(
`python_library_host {
name: "lib1",
srcs: [
"file1.py",
],
data: [
"file2.py",
],
}`,
),
"dir/file1.py": nil,
"dir/file2.py": nil,
},
errors: []string{
fmt.Sprintf(badDataFileExtErr,
"dir/Blueprints:6:11", "lib1", "PY3", "dir/file2.py"),
},
},
{
desc: "module with bad pkg_path format",
mockFiles: map[string][]byte{
bpFile: []byte(`subdirs = ["dir"]`),
filepath.Join("dir", bpFile): []byte(
`python_library_host {
name: "lib1",
pkg_path: "a/c/../../",
srcs: [
"file1.py",
],
}
python_library_host {
name: "lib2",
pkg_path: "a/c/../../../",
srcs: [
"file1.py",
],
}
python_library_host {
name: "lib3",
pkg_path: "/a/c/../../",
srcs: [
"file1.py",
],
}`,
),
"dir/file1.py": nil,
},
errors: []string{
fmt.Sprintf(pkgPathErrTemplate,
"dir/Blueprints:11:15", "lib2", "PY3", "a/c/../../../"),
fmt.Sprintf(pkgPathErrTemplate,
"dir/Blueprints:19:15", "lib3", "PY3", "/a/c/../../"),
},
},
{
desc: "module with bad runfile src path format",
mockFiles: map[string][]byte{
bpFile: []byte(`subdirs = ["dir"]`),
filepath.Join("dir", bpFile): []byte(
`python_library_host {
name: "lib1",
pkg_path: "a/b/c/",
srcs: [
".file1.py",
"123/file1.py",
"-e/f/file1.py",
],
}`,
),
"dir/.file1.py": nil,
"dir/123/file1.py": nil,
"dir/-e/f/file1.py": nil,
},
errors: []string{
fmt.Sprintf(badIdentifierErrTemplate, "dir/Blueprints:4:11",
"lib1", "PY3", "runfiles/a/b/c/-e/f/file1.py", "-e"),
fmt.Sprintf(badIdentifierErrTemplate, "dir/Blueprints:4:11",
"lib1", "PY3", "runfiles/a/b/c/.file1.py", ".file1"),
fmt.Sprintf(badIdentifierErrTemplate, "dir/Blueprints:4:11",
"lib1", "PY3", "runfiles/a/b/c/123/file1.py", "123"),
},
},
{
desc: "module with duplicate runfile path",
mockFiles: map[string][]byte{
bpFile: []byte(`subdirs = ["dir"]`),
filepath.Join("dir", bpFile): []byte(
`python_library_host {
name: "lib1",
pkg_path: "a/b/",
srcs: [
"c/file1.py",
],
}
python_library_host {
name: "lib2",
pkg_path: "a/b/c/",
srcs: [
"file1.py",
],
libs: [
"lib1",
],
}
`,
),
"dir/c/file1.py": nil,
"dir/file1.py": nil,
},
errors: []string{
fmt.Sprintf(dupRunfileErrTemplate, "dir/Blueprints:9:6",
"lib2", "PY3", "runfiles/a/b/c/file1.py", "lib2", "dir/file1.py",
"lib1", "dir/c/file1.py"),
},
},
{
desc: "module for testing dependencies",
mockFiles: map[string][]byte{
bpFile: []byte(`subdirs = ["dir"]`),
filepath.Join("dir", bpFile): []byte(
`python_library_host {
name: "lib5",
pkg_path: "a/b/",
srcs: [
"file1.py",
],
version: {
py2: {
enabled: true,
},
py3: {
enabled: true,
},
},
}
python_library_host {
name: "lib6",
pkg_path: "c/d/",
srcs: [
"file2.py",
],
libs: [
"lib5",
],
}
python_binary_host {
name: "bin",
pkg_path: "e/",
srcs: [
"bin.py",
],
libs: [
"lib5",
],
version: {
py3: {
enabled: true,
srcs: [
"file4.py",
],
libs: [
"lib6",
],
},
},
}`,
),
filepath.Join("dir", "file1.py"): nil,
filepath.Join("dir", "file2.py"): nil,
filepath.Join("dir", "bin.py"): nil,
filepath.Join("dir", "file4.py"): nil,
stubTemplateHost: []byte(`PYTHON_BINARY = '%interpreter%'
MAIN_FILE = '%main%'`),
},
expectedBinaries: []pyBinary{
{
name: "bin",
actualVersion: "PY3",
pyRunfiles: []string{
"runfiles/e/bin.py",
"runfiles/e/file4.py",
},
depsPyRunfiles: []string{
"runfiles/a/b/file1.py",
"runfiles/c/d/file2.py",
},
parSpec: "-P runfiles/e -C dir/ -l @prefix@/.intermediates/dir/bin/PY3/dir_.list",
depsParSpecs: []string{
"-P runfiles/a/b -C dir/ -l @prefix@/.intermediates/dir/lib5/PY3/dir_.list",
"-P runfiles/c/d -C dir/ -l @prefix@/.intermediates/dir/lib6/PY3/dir_.list",
},
},
},
},
}
)
func TestPythonModule(t *testing.T) {
config, buildDir := setupBuildEnv(t)
defer tearDownBuildEnv()
android.TestPreDepsMutators(func(ctx android.RegisterMutatorsContext) {
ctx.BottomUp("version_split", versionSplitMutator()).Parallel()
})
for _, d := range data {
t.Run(d.desc, func(t *testing.T) {
ctx := blueprint.NewContext()
android.RegisterTestMutators(ctx)
ctx.RegisterModuleType("python_library_host", PythonLibraryHostFactory)
ctx.RegisterModuleType("python_binary_host", PythonBinaryHostFactory)
ctx.MockFileSystem(d.mockFiles)
_, testErrs := ctx.ParseBlueprintsFiles(bpFile)
fail(t, testErrs)
_, actErrs := ctx.PrepareBuildActions(config)
if len(actErrs) > 0 {
testErrs = append(testErrs, expectErrors(t, actErrs, d.errors)...)
} else {
for _, e := range d.expectedBinaries {
testErrs = append(testErrs,
expectModule(t, ctx, buildDir, e.name,
e.actualVersion,
e.pyRunfiles, e.depsPyRunfiles,
e.parSpec, e.depsParSpecs)...)
}
}
fail(t, testErrs)
})
}
}
func expectErrors(t *testing.T, actErrs []error, expErrs []string) (testErrs []error) {
actErrStrs := []string{}
for _, v := range actErrs {
actErrStrs = append(actErrStrs, v.Error())
}
sort.Strings(actErrStrs)
if len(actErrStrs) != len(expErrs) {
t.Errorf("got (%d) errors, expected (%d) errors!", len(actErrStrs), len(expErrs))
for _, v := range actErrStrs {
testErrs = append(testErrs, errors.New(v))
}
} else {
sort.Strings(expErrs)
for i, v := range actErrStrs {
if v != expErrs[i] {
testErrs = append(testErrs, errors.New(v))
}
}
}
return
}
func expectModule(t *testing.T, ctx *blueprint.Context, buildDir, name, variant string,
expPyRunfiles, expDepsPyRunfiles []string,
expParSpec string, expDepsParSpecs []string) (testErrs []error) {
module := findModule(ctx, name, variant)
if module == nil {
t.Fatalf("failed to find module %s!", name)
}
base, baseOk := module.(*pythonBaseModule)
if !baseOk {
t.Fatalf("%s is not Python module!", name)
}
sub, subOk := base.subModule.(*PythonBinary)
if !subOk {
t.Fatalf("%s is not Python binary!", name)
}
actPyRunfiles := []string{}
for _, path := range base.srcsPathMappings {
actPyRunfiles = append(actPyRunfiles, path.dest)
}
if !reflect.DeepEqual(actPyRunfiles, expPyRunfiles) {
testErrs = append(testErrs, errors.New(fmt.Sprintf(
`binary "%s" variant "%s" has unexpected pyRunfiles: %q!`,
base.Name(),
base.properties.ActualVersion,
actPyRunfiles)))
}
if !reflect.DeepEqual(sub.depsPyRunfiles, expDepsPyRunfiles) {
testErrs = append(testErrs, errors.New(fmt.Sprintf(
`binary "%s" variant "%s" has unexpected depsPyRunfiles: %q!`,
base.Name(),
base.properties.ActualVersion,
sub.depsPyRunfiles)))
}
if base.parSpec.soongParArgs() != strings.Replace(expParSpec, "@prefix@", buildDir, 1) {
testErrs = append(testErrs, errors.New(fmt.Sprintf(
`binary "%s" variant "%s" has unexpected parSpec: %q!`,
base.Name(),
base.properties.ActualVersion,
base.parSpec.soongParArgs())))
}
actDepsParSpecs := []string{}
for i, p := range sub.depsParSpecs {
actDepsParSpecs = append(actDepsParSpecs, p.soongParArgs())
expDepsParSpecs[i] = strings.Replace(expDepsParSpecs[i], "@prefix@", buildDir, 1)
}
if !reflect.DeepEqual(actDepsParSpecs, expDepsParSpecs) {
testErrs = append(testErrs, errors.New(fmt.Sprintf(
`binary "%s" variant "%s" has unexpected depsParSpecs: %q!`,
base.Name(),
base.properties.ActualVersion,
actDepsParSpecs)))
}
return
}
func setupBuildEnv(t *testing.T) (config android.Config, buildDir string) {
buildDir, err := ioutil.TempDir("", buildNamePrefix)
if err != nil {
t.Fatal(err)
}
config = android.TestConfig(buildDir)
return
}
func tearDownBuildEnv() {
os.RemoveAll(buildNamePrefix)
}
func findModule(ctx *blueprint.Context, name, variant string) blueprint.Module {
var ret blueprint.Module
ctx.VisitAllModules(func(m blueprint.Module) {
if ctx.ModuleName(m) == name && ctx.ModuleSubDir(m) == variant {
ret = m
}
})
return ret
}
func fail(t *testing.T, errs []error) {
if len(errs) > 0 {
for _, err := range errs {
t.Error(err)
}
t.FailNow()
}
}

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#!/usr/bin/env python
import os
import re
import tempfile
import shutil
import sys
import subprocess
import zipfile
PYTHON_BINARY = '%interpreter%'
MAIN_FILE = '%main%'
PYTHON_PATH = 'PYTHONPATH'
ZIP_RUNFILES_DIRECTORY_NAME = 'runfiles'
def SearchPathEnv(name):
search_path = os.getenv('PATH', os.defpath).split(os.pathsep)
for directory in search_path:
if directory == '': continue
path = os.path.join(directory, name)
if os.path.islink(path):
path = os.path.realpath(path)
# Check if path is actual executable file.
if os.path.isfile(path) and os.access(path, os.X_OK):
return path
return None
def FindPythonBinary():
if PYTHON_BINARY.startswith('/'):
# Case 1: Python interpreter is directly provided with absolute path.
return PYTHON_BINARY
else:
# Case 2: Find Python interpreter through environment variable: PATH.
return SearchPathEnv(PYTHON_BINARY)
# Create the runfiles tree by extracting the zip file
def ExtractRunfiles():
temp_dir = tempfile.mkdtemp("", "Soong.python_")
zf = zipfile.ZipFile(os.path.dirname(__file__))
zf.extractall(temp_dir)
return os.path.join(temp_dir, ZIP_RUNFILES_DIRECTORY_NAME)
def Main():
args = sys.argv[1:]
new_env = {}
try:
runfiles_path = ExtractRunfiles()
# Add runfiles path to PYTHONPATH.
python_path_entries = [runfiles_path]
# Add top dirs within runfiles path to PYTHONPATH.
top_entries = [os.path.join(runfiles_path, i) for i in os.listdir(runfiles_path)]
top_pkg_dirs = [i for i in top_entries if os.path.isdir(i)]
python_path_entries += top_pkg_dirs
old_python_path = os.environ.get(PYTHON_PATH)
separator = ':'
new_python_path = separator.join(python_path_entries)
# Copy old PYTHONPATH.
if old_python_path:
new_python_path += separator + old_python_path
new_env[PYTHON_PATH] = new_python_path
# Now look for main python source file.
main_filepath = os.path.join(runfiles_path, MAIN_FILE)
assert os.path.exists(main_filepath), \
'Cannot exec() %r: file not found.' % main_filepath
assert os.access(main_filepath, os.R_OK), \
'Cannot exec() %r: file not readable.' % main_filepath
python_program = FindPythonBinary()
if python_program is None:
raise AssertionError('Could not find python binary: ' + PYTHON_BINARY)
args = [python_program, main_filepath] + args
os.environ.update(new_env)
sys.stdout.flush()
retCode = subprocess.call(args)
exit(retCode)
except:
raise
finally:
shutil.rmtree(os.path.dirname(runfiles_path), True)
if __name__ == '__main__':
Main()