platform_build_soong/bp2build/bp2build_product_config.go
Jingwen Chen 583ab219ea Create a "current_product" named platform.
This enables output paths of product agnostic targets (e.g. mainline
apex) to be identical when switching between target products, since the
product name is no longer embedded in:

1) the output path prefix in bazel-out
2) the PlatformOptions contribution to the configuration hash as part of a transition

Test: treehugger
Change-Id: I3fd0f7134209aa7eede3ed98412a1c5482689b57
2023-05-30 15:40:18 +00:00

133 lines
4.4 KiB
Go

package bp2build
import (
"fmt"
"os"
"path/filepath"
"strings"
)
func CreateProductConfigFiles(
ctx *CodegenContext) ([]BazelFile, error) {
cfg := &ctx.config
targetProduct := "unknown"
if cfg.HasDeviceProduct() {
targetProduct = cfg.DeviceProduct()
}
targetBuildVariant := "user"
if cfg.Eng() {
targetBuildVariant = "eng"
} else if cfg.Debuggable() {
targetBuildVariant = "userdebug"
}
productVariablesFileName := cfg.ProductVariablesFileName
if !strings.HasPrefix(productVariablesFileName, "/") {
productVariablesFileName = filepath.Join(ctx.topDir, productVariablesFileName)
}
bytes, err := os.ReadFile(productVariablesFileName)
if err != nil {
return nil, err
}
// TODO(b/249685973): the name is product_config_platforms because product_config
// was already used for other files. Deduplicate them.
currentProductFolder := fmt.Sprintf("product_config_platforms/products/%s-%s", targetProduct, targetBuildVariant)
productReplacer := strings.NewReplacer(
"{PRODUCT}", targetProduct,
"{VARIANT}", targetBuildVariant,
"{PRODUCT_FOLDER}", currentProductFolder)
result := []BazelFile{
newFile(
currentProductFolder,
"soong.variables.bzl",
`variables = json.decode("""`+strings.ReplaceAll(string(bytes), "\\", "\\\\")+`""")`),
newFile(
currentProductFolder,
"BUILD",
productReplacer.Replace(`
package(default_visibility=[
"@soong_injection//product_config_platforms:__subpackages__",
"@//build/bazel/product_config:__subpackages__",
])
load(":soong.variables.bzl", _soong_variables = "variables")
load("@//build/bazel/product_config:android_product.bzl", "android_product")
android_product(
name = "{PRODUCT}-{VARIANT}",
soong_variables = _soong_variables,
)
`)),
newFile(
"product_config_platforms",
"BUILD.bazel",
productReplacer.Replace(`
package(default_visibility = [
"@//build/bazel/product_config:__subpackages__",
"@soong_injection//product_config_platforms:__subpackages__",
])
load("//{PRODUCT_FOLDER}:soong.variables.bzl", _soong_variables = "variables")
load("@//build/bazel/product_config:android_product.bzl", "android_product")
android_product(
name = "current_product-{VARIANT}",
soong_variables = _soong_variables,
)
`)),
newFile(
"product_config_platforms",
"product_labels.bzl",
productReplacer.Replace(`
# This file keeps a list of all the products in the android source tree, because they're
# discovered as part of a preprocessing step before bazel runs.
# TODO: When we start generating the platforms for more than just the
# currently lunched product, they should all be listed here
product_labels = [
"@soong_injection//product_config_platforms:current_product-{VARIANT}",
"@soong_injection//{PRODUCT_FOLDER}:{PRODUCT}-{VARIANT}"
]
`)),
newFile(
"product_config_platforms",
"common.bazelrc",
productReplacer.Replace(`
# current_product refers to the current TARGET_PRODUCT set, usually through
# 'lunch' or 'banchan'. Every build will have a primary TARGET_PRODUCT, but
# bazel supports using other products in tests or configuration transitions. The
# other products can be found in
# @soong_injection//product_config_platforms/products/...
build --platforms @soong_injection//product_config_platforms:current_product-{VARIANT}_linux_x86_64
build:android --platforms=@soong_injection//product_config_platforms:current_product-{VARIANT}
build:linux_x86_64 --platforms=@soong_injection//product_config_platforms:current_product-{VARIANT}_linux_x86_64
build:linux_bionic_x86_64 --platforms=@soong_injection//product_config_platforms:current_product-{VARIANT}_linux_bionic_x86_64
build:linux_musl_x86 --platforms=@soong_injection//product_config_platforms:current_product-{VARIANT}_linux_musl_x86
build:linux_musl_x86_64 --platforms=@soong_injection//product_config_platforms:current_product-{VARIANT}_linux_musl_x86_64
`)),
newFile(
"product_config_platforms",
"linux.bazelrc",
productReplacer.Replace(`
build --host_platform @soong_injection//product_config_platforms:current_product-{VARIANT}_linux_x86_64
`)),
newFile(
"product_config_platforms",
"darwin.bazelrc",
productReplacer.Replace(`
build --host_platform product_config_platforms:current_product-{VARIANT}_darwin_x86_64
`)),
newFile(
"product_config_platforms",
"platform_mappings",
productReplacer.Replace(`
flags:
--cpu=k8
@soong_injection//product_config_platforms:current_product-{VARIANT}
`)),
}
return result, nil
}