Colin Cross | 8e0c511 | 2015-01-23 14:15:10 -0800 | [diff] [blame] | 1 | // Copyright 2014 Google Inc. All rights reserved. |
| 2 | // |
| 3 | // Licensed under the Apache License, Version 2.0 (the "License"); |
| 4 | // you may not use this file except in compliance with the License. |
| 5 | // You may obtain a copy of the License at |
| 6 | // |
| 7 | // http://www.apache.org/licenses/LICENSE-2.0 |
| 8 | // |
| 9 | // Unless required by applicable law or agreed to in writing, software |
| 10 | // distributed under the License is distributed on an "AS IS" BASIS, |
| 11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 12 | // See the License for the specific language governing permissions and |
| 13 | // limitations under the License. |
| 14 | |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 15 | package bootstrap |
| 16 | |
| 17 | import ( |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 18 | "bytes" |
| 19 | "flag" |
| 20 | "fmt" |
| 21 | "io/ioutil" |
| 22 | "os" |
Jamie Gennis | c4ed709 | 2014-11-09 11:58:40 -0800 | [diff] [blame] | 23 | "path/filepath" |
Colin Cross | 5bdb4ca | 2015-04-14 17:22:19 -0700 | [diff] [blame] | 24 | "runtime" |
Colin Cross | 63d5d4d | 2015-04-20 16:41:55 -0700 | [diff] [blame] | 25 | "runtime/pprof" |
Colin Cross | 5bdb4ca | 2015-04-14 17:22:19 -0700 | [diff] [blame] | 26 | |
| 27 | "github.com/google/blueprint" |
| 28 | "github.com/google/blueprint/deptools" |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 29 | ) |
| 30 | |
Jamie Gennis | 7d5b2f8 | 2014-09-24 17:51:52 -0700 | [diff] [blame] | 31 | var ( |
Jamie Gennis | c4ed709 | 2014-11-09 11:58:40 -0800 | [diff] [blame] | 32 | outFile string |
| 33 | depFile string |
| 34 | checkFile string |
| 35 | manifestFile string |
Colin Cross | 4572edd | 2015-05-13 14:36:24 -0700 | [diff] [blame] | 36 | docFile string |
Jamie Gennis | c4ed709 | 2014-11-09 11:58:40 -0800 | [diff] [blame] | 37 | cpuprofile string |
Dan Willemsen | 87ba294 | 2015-06-23 17:21:00 -0700 | [diff] [blame] | 38 | runGoTests bool |
Jamie Gennis | 7d5b2f8 | 2014-09-24 17:51:52 -0700 | [diff] [blame] | 39 | ) |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 40 | |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 41 | func init() { |
| 42 | flag.StringVar(&outFile, "o", "build.ninja.in", "the Ninja file to output") |
| 43 | flag.StringVar(&depFile, "d", "", "the dependency file to output") |
Jamie Gennis | cbc6f86 | 2014-06-05 20:00:22 -0700 | [diff] [blame] | 44 | flag.StringVar(&checkFile, "c", "", "the existing file to check against") |
Jamie Gennis | c4ed709 | 2014-11-09 11:58:40 -0800 | [diff] [blame] | 45 | flag.StringVar(&manifestFile, "m", "", "the bootstrap manifest file") |
Colin Cross | 4572edd | 2015-05-13 14:36:24 -0700 | [diff] [blame] | 46 | flag.StringVar(&docFile, "docs", "", "build documentation file to output") |
Jamie Gennis | 7d5b2f8 | 2014-09-24 17:51:52 -0700 | [diff] [blame] | 47 | flag.StringVar(&cpuprofile, "cpuprofile", "", "write cpu profile to file") |
Dan Willemsen | 87ba294 | 2015-06-23 17:21:00 -0700 | [diff] [blame] | 48 | flag.BoolVar(&runGoTests, "t", false, "build and run go tests during bootstrap") |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 49 | } |
| 50 | |
Christopher Horvath | 3159cb7 | 2014-06-26 15:34:06 -0700 | [diff] [blame] | 51 | func Main(ctx *blueprint.Context, config interface{}, extraNinjaFileDeps ...string) { |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 52 | if !flag.Parsed() { |
| 53 | flag.Parse() |
| 54 | } |
| 55 | |
Colin Cross | 5bdb4ca | 2015-04-14 17:22:19 -0700 | [diff] [blame] | 56 | runtime.GOMAXPROCS(runtime.NumCPU()) |
| 57 | |
Jamie Gennis | 7d5b2f8 | 2014-09-24 17:51:52 -0700 | [diff] [blame] | 58 | if cpuprofile != "" { |
| 59 | f, err := os.Create(cpuprofile) |
| 60 | if err != nil { |
| 61 | fatalf("error opening cpuprofile: %s", err) |
| 62 | } |
| 63 | pprof.StartCPUProfile(f) |
| 64 | defer f.Close() |
| 65 | defer pprof.StopCPUProfile() |
| 66 | } |
| 67 | |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 68 | if flag.NArg() != 1 { |
| 69 | fatalf("no Blueprints file specified") |
| 70 | } |
| 71 | |
Dan Willemsen | 30a80c3 | 2015-06-24 19:21:21 -0700 | [diff] [blame] | 72 | generatingBootstrapper := false |
| 73 | if c, ok := config.(ConfigInterface); ok { |
| 74 | generatingBootstrapper = c.GeneratingBootstrapper() |
| 75 | } |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 76 | |
Dan Willemsen | 30a80c3 | 2015-06-24 19:21:21 -0700 | [diff] [blame] | 77 | bootstrapConfig := &Config{ |
| 78 | generatingBootstrapper: generatingBootstrapper, |
| 79 | topLevelBlueprintsFile: flag.Arg(0), |
Dan Willemsen | 87ba294 | 2015-06-23 17:21:00 -0700 | [diff] [blame] | 80 | runGoTests: runGoTests, |
Dan Willemsen | 30a80c3 | 2015-06-24 19:21:21 -0700 | [diff] [blame] | 81 | } |
| 82 | |
| 83 | ctx.RegisterModuleType("bootstrap_go_package", newGoPackageModuleFactory(bootstrapConfig)) |
| 84 | ctx.RegisterModuleType("bootstrap_go_binary", newGoBinaryModuleFactory(bootstrapConfig)) |
| 85 | ctx.RegisterSingletonType("bootstrap", newSingletonFactory(bootstrapConfig)) |
| 86 | |
| 87 | deps, errs := ctx.ParseBlueprintsFiles(bootstrapConfig.topLevelBlueprintsFile) |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 88 | if len(errs) > 0 { |
| 89 | fatalErrors(errs) |
| 90 | } |
| 91 | |
Christopher Horvath | 3159cb7 | 2014-06-26 15:34:06 -0700 | [diff] [blame] | 92 | // Add extra ninja file dependencies |
| 93 | deps = append(deps, extraNinjaFileDeps...) |
| 94 | |
Colin Cross | 4572edd | 2015-05-13 14:36:24 -0700 | [diff] [blame] | 95 | errs = ctx.ResolveDependencies(config) |
| 96 | if len(errs) > 0 { |
| 97 | fatalErrors(errs) |
| 98 | } |
| 99 | |
| 100 | if docFile != "" { |
| 101 | err := writeDocs(ctx, filepath.Dir(bootstrapConfig.topLevelBlueprintsFile), docFile) |
| 102 | if err != nil { |
| 103 | fatalErrors([]error{err}) |
| 104 | } |
| 105 | return |
| 106 | } |
| 107 | |
Mathias Agopian | 5b8477d | 2014-06-25 17:21:54 -0700 | [diff] [blame] | 108 | extraDeps, errs := ctx.PrepareBuildActions(config) |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 109 | if len(errs) > 0 { |
| 110 | fatalErrors(errs) |
| 111 | } |
Mathias Agopian | 5b8477d | 2014-06-25 17:21:54 -0700 | [diff] [blame] | 112 | deps = append(deps, extraDeps...) |
| 113 | |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 114 | buf := bytes.NewBuffer(nil) |
| 115 | err := ctx.WriteBuildFile(buf) |
| 116 | if err != nil { |
| 117 | fatalf("error generating Ninja file contents: %s", err) |
| 118 | } |
| 119 | |
Jamie Gennis | cbc6f86 | 2014-06-05 20:00:22 -0700 | [diff] [blame] | 120 | const outFilePermissions = 0666 |
| 121 | err = ioutil.WriteFile(outFile, buf.Bytes(), outFilePermissions) |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 122 | if err != nil { |
| 123 | fatalf("error writing %s: %s", outFile, err) |
| 124 | } |
| 125 | |
Jamie Gennis | cbc6f86 | 2014-06-05 20:00:22 -0700 | [diff] [blame] | 126 | if checkFile != "" { |
| 127 | checkData, err := ioutil.ReadFile(checkFile) |
| 128 | if err != nil { |
| 129 | fatalf("error reading %s: %s", checkFile, err) |
| 130 | } |
| 131 | |
| 132 | matches := buf.Len() == len(checkData) |
Jamie Gennis | a22f3e5 | 2014-06-11 16:24:23 -0700 | [diff] [blame] | 133 | if matches { |
Jamie Gennis | cbc6f86 | 2014-06-05 20:00:22 -0700 | [diff] [blame] | 134 | for i, value := range buf.Bytes() { |
| 135 | if value != checkData[i] { |
| 136 | matches = false |
| 137 | break |
| 138 | } |
| 139 | } |
| 140 | } |
| 141 | |
| 142 | if matches { |
| 143 | // The new file content matches the check-file content, so we set |
| 144 | // the new file's mtime and atime to match that of the check-file. |
| 145 | checkFileInfo, err := os.Stat(checkFile) |
| 146 | if err != nil { |
| 147 | fatalf("error stat'ing %s: %s", checkFile, err) |
| 148 | } |
| 149 | |
| 150 | time := checkFileInfo.ModTime() |
| 151 | err = os.Chtimes(outFile, time, time) |
| 152 | if err != nil { |
| 153 | fatalf("error setting timestamps for %s: %s", outFile, err) |
| 154 | } |
| 155 | } |
| 156 | } |
| 157 | |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 158 | if depFile != "" { |
Jamie Gennis | fbb27fe | 2014-10-14 04:30:17 -0400 | [diff] [blame] | 159 | err := deptools.WriteDepFile(depFile, outFile, deps) |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 160 | if err != nil { |
| 161 | fatalf("error writing depfile: %s", err) |
| 162 | } |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 163 | } |
Jamie Gennis | af43556 | 2014-10-27 22:34:56 -0700 | [diff] [blame] | 164 | |
Dan Willemsen | 30a80c3 | 2015-06-24 19:21:21 -0700 | [diff] [blame] | 165 | srcDir := filepath.Dir(bootstrapConfig.topLevelBlueprintsFile) |
| 166 | err = removeAbandonedFiles(ctx, bootstrapConfig, srcDir, manifestFile) |
Jamie Gennis | af43556 | 2014-10-27 22:34:56 -0700 | [diff] [blame] | 167 | if err != nil { |
| 168 | fatalf("error removing abandoned files: %s", err) |
| 169 | } |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 170 | } |
| 171 | |
| 172 | func fatalf(format string, args ...interface{}) { |
Jamie Gennis | cbc6f86 | 2014-06-05 20:00:22 -0700 | [diff] [blame] | 173 | fmt.Printf(format, args...) |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 174 | os.Exit(1) |
| 175 | } |
| 176 | |
| 177 | func fatalErrors(errs []error) { |
| 178 | for _, err := range errs { |
| 179 | switch err.(type) { |
| 180 | case *blueprint.Error: |
Jamie Gennis | cbc6f86 | 2014-06-05 20:00:22 -0700 | [diff] [blame] | 181 | _, _ = fmt.Printf("%s\n", err.Error()) |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 182 | default: |
Jamie Gennis | cbc6f86 | 2014-06-05 20:00:22 -0700 | [diff] [blame] | 183 | _, _ = fmt.Printf("internal error: %s\n", err) |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 184 | } |
| 185 | } |
| 186 | os.Exit(1) |
| 187 | } |