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Commit 3cf7c0a2 authored by Ted Bauer's avatar Ted Bauer
Browse files

Add a Java lib to read on-device proto paths 

Bug: 337911453
Test: m aconfig_on_device_protos_java
Change-Id: Iac8d671acee070ed041927028ec80c7aa371bd61

Change-Id: I19e0e52d8de71207c9858305e6248b6251a20989
parent 64dac049

tools/aconfig/aconfig_device_paths/Android.bp

+13 −0
Original line number Diff line number Diff line
@@ -36,3 +36,16 @@ rust_library { 
    host_supported: true,

    defaults: ["libaconfig_device_paths.defaults"],

}



genrule {

    name: "libaconfig_java_device_paths_src",

    srcs: ["src/DevicePathsTemplate.java"],

    out: ["DevicePaths.java"],

    tool_files: ["partition_aconfig_flags_paths.txt"],

    cmd: "sed -e '/TEMPLATE/{r$(location partition_aconfig_flags_paths.txt)' -e 'd}' $(in) > $(out)"

}



java_library {

    name: "aconfig_device_paths_java",

    srcs: [":libaconfig_java_device_paths_src"],

}

tools/aconfig/aconfig_device_paths/partition_aconfig_flags_paths.txt

+4 −6
Original line number Diff line number Diff line 
[

"/system/etc/aconfig_flags.pb",

"/system_ext/etc/aconfig_flags.pb",

"/product/etc/aconfig_flags.pb",

"/vendor/etc/aconfig_flags.pb",
 
]

tools/aconfig/aconfig_device_paths/src/DevicePathsTemplate.java

0 → 100644
+68 −0
Original line number Diff line number Diff line 
/*

 * Copyright (C) 2024 The Android Open Source Project

 *

 * 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 android.aconfig;



import java.io.File;

import java.util.ArrayList;

import java.util.Arrays;

import java.util.List;



/**

 * @hide

 */

public class DevicePaths {

    static final String[] PATHS = {

        TEMPLATE

    };



    private static final String APEX_DIR = "/apex";

    private static final String APEX_ACONFIG_PATH_SUFFIX = "/etc/aconfig_flags.pb";





    /**

     * Returns the list of all on-device aconfig protos paths.

     * @hide

     */

    public List<String> parsedFlagsProtoPaths() {

        ArrayList<String> paths = new ArrayList(Arrays.asList(PATHS));



        File apexDirectory = new File(APEX_DIR);

        if (!apexDirectory.isDirectory()) {

            return paths;

        }



        File[] subdirs = apexDirectory.listFiles();

        if (subdirs == null) {

            return paths;

        }



        for (File prefix : subdirs) {

            // For each mainline modules, there are two directories, one <modulepackage>/,

            // and one <modulepackage>@<versioncode>/. Just read the former.

            if (prefix.getAbsolutePath().contains("@")) {

                continue;

            }



            File protoPath = new File(prefix + APEX_ACONFIG_PATH_SUFFIX);

            if (!protoPath.exists()) {

                continue;

            }



            paths.add(protoPath.getAbsolutePath());

        }

        return paths;

    }

}

tools/aconfig/aconfig_device_paths/src/lib.rs

+1 −1
Original line number Diff line number Diff line
@@ -23,7 +23,7 @@ use std::fs; 


/// Determine all paths that contain an aconfig protobuf file.

pub fn parsed_flags_proto_paths() -> Result<Vec<PathBuf>> {

    let mut result: Vec<PathBuf> = include!("../partition_aconfig_flags_paths.txt")

    let mut result: Vec<PathBuf> = [include_str!("../partition_aconfig_flags_paths.txt")]

        .map(|s| PathBuf::from(s.to_string()))

        .to_vec();

    for dir in fs::read_dir("/apex")? {