1/*
2 * Copyright (C) 2020 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package apex
18
19import (
20	"github.com/google/blueprint"
21
22	"android/soong/android"
23)
24
25func init() {
26	android.RegisterSingletonType("apex_depsinfo_singleton", apexDepsInfoSingletonFactory)
27}
28
29type apexDepsInfoSingleton struct {
30	// Output file with all flatlists from updatable modules' deps-info combined
31	updatableFlatListsPath android.OutputPath
32}
33
34func apexDepsInfoSingletonFactory() android.Singleton {
35	return &apexDepsInfoSingleton{}
36}
37
38var combineFilesRule = pctx.AndroidStaticRule("combineFilesRule",
39	blueprint.RuleParams{
40		Command:        "cat $out.rsp | xargs cat > $out",
41		Rspfile:        "$out.rsp",
42		RspfileContent: "$in",
43	},
44)
45
46func (s *apexDepsInfoSingleton) GenerateBuildActions(ctx android.SingletonContext) {
47	updatableFlatLists := android.Paths{}
48	ctx.VisitAllModules(func(module android.Module) {
49		if binaryInfo, ok := module.(android.ApexBundleDepsInfoIntf); ok {
50			if path := binaryInfo.FlatListPath(); path != nil {
51				if binaryInfo.Updatable() {
52					updatableFlatLists = append(updatableFlatLists, path)
53				}
54			}
55		}
56	})
57
58	s.updatableFlatListsPath = android.PathForOutput(ctx, "apex", "depsinfo", "updatable-flatlists.txt")
59	ctx.Build(pctx, android.BuildParams{
60		Rule:        combineFilesRule,
61		Description: "Generate " + s.updatableFlatListsPath.String(),
62		Inputs:      updatableFlatLists,
63		Output:      s.updatableFlatListsPath,
64	})
65}
66