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| 1 | +import 'dart:io'; |
| 2 | +import 'package:native_assets_cli/native_assets_cli.dart'; |
| 3 | +import 'package:http/http.dart' as http; |
| 4 | +import 'package:path/path.dart' as path; |
| 5 | + |
| 6 | +import '../sdk_downloads.dart'; |
| 7 | + |
| 8 | +late File logFile; |
| 9 | + |
| 10 | +final logs = <(DateTime, String)>[]; |
| 11 | +void log(String msg) { |
| 12 | + logs.add((DateTime.now(), msg)); |
| 13 | + if (!logFile.parent.existsSync()) { |
| 14 | + logFile.parent.createSync(); |
| 15 | + } |
| 16 | + |
| 17 | + if (logFile.existsSync()) { |
| 18 | + logFile.deleteSync(); |
| 19 | + } |
| 20 | + logFile.createSync(); |
| 21 | + logFile.writeAsStringSync(logs |
| 22 | + .map<String>((rec) => '[${rec.$1.toIso8601String()}] ${rec.$2}') |
| 23 | + .toList() |
| 24 | + .join('\n\n')); |
| 25 | +} |
| 26 | + |
| 27 | +Future<void> main(List<String> args) async { |
| 28 | + await build(args, (buildConfig, buildOutput) async { |
| 29 | + logFile = File( |
| 30 | + path.joinAll([ |
| 31 | + Directory.current.path, // root dir of app using `mediapipe-task-xyz` |
| 32 | + 'build/${buildConfig.dryRun ? "dryrun" : "live-run"}-build-log.txt', |
| 33 | + ]), |
| 34 | + ); |
| 35 | + |
| 36 | + log(args.join(' ')); |
| 37 | + final String targetOs = buildConfig.targetOS.toString(); |
| 38 | + |
| 39 | + log('dir.current: ${Directory.current.absolute.path}'); |
| 40 | + |
| 41 | + // Throw if target runtime is unsupported. |
| 42 | + if (!sdkDownloadUrls.containsKey(targetOs)) { |
| 43 | + throw Exception('Unsupported target OS: $targetOs. ' |
| 44 | + 'Supported values are: ${sdkDownloadUrls.keys.toSet()}'); |
| 45 | + } |
| 46 | + |
| 47 | + buildOutput.addDependencies([ |
| 48 | + buildConfig.packageRoot.resolve('build.dart'), |
| 49 | + buildConfig.packageRoot.resolve('sdk_downloads.dart'), |
| 50 | + ]); |
| 51 | + |
| 52 | + final modelName = 'libllm_inference_engine'; |
| 53 | + final Iterable<String> archKeys; |
| 54 | + if (buildConfig.dryRun) { |
| 55 | + archKeys = sdkDownloadUrls[targetOs]![modelName]!.keys; |
| 56 | + } else { |
| 57 | + archKeys = [buildConfig.targetArchitecture.toString()]; |
| 58 | + } |
| 59 | + for (String arch in archKeys) { |
| 60 | + arch = getArchAlias(arch); |
| 61 | + log('arch: $arch'); |
| 62 | + log('sdkDownloadUrls[$targetOs]: ${sdkDownloadUrls[targetOs]}'); |
| 63 | + log('sdkDownloadUrls[$targetOs][$modelName]: ${sdkDownloadUrls[targetOs]![modelName]}'); |
| 64 | + log('sdkDownloadUrls[$targetOs][$modelName][$arch]: ${sdkDownloadUrls[targetOs]![modelName]![arch]}'); |
| 65 | + |
| 66 | + if (!sdkDownloadUrls[targetOs]!['libllm_inference_engine']! |
| 67 | + .containsKey(arch)) { |
| 68 | + continue; |
| 69 | + } |
| 70 | + final assetUrl = |
| 71 | + sdkDownloadUrls[targetOs]!['libllm_inference_engine']![arch]!; |
| 72 | + |
| 73 | + // Take last chunk and drop file extension, e.g., |
| 74 | + // "path/to/file.dylib" -> "file" |
| 75 | + final fileName = assetUrl.split('/').last.split('.').first; |
| 76 | + |
| 77 | + final downloadFileLocation = buildConfig.outputDirectory.resolve( |
| 78 | + buildConfig.targetOS.dylibFileName(fileName), |
| 79 | + ); |
| 80 | + buildOutput.addAsset( |
| 81 | + NativeCodeAsset( |
| 82 | + package: 'mediapipe_genai', |
| 83 | + name: |
| 84 | + 'src/io/third_party/mediapipe/generated/mediapipe_genai_bindings.dart', |
| 85 | + linkMode: DynamicLoadingBundled(), |
| 86 | + os: buildConfig.targetOS, |
| 87 | + architecture: buildConfig.targetArchitecture, |
| 88 | + file: downloadFileLocation, |
| 89 | + ), |
| 90 | + ); |
| 91 | + if (!buildConfig.dryRun) { |
| 92 | + log('downloadFileLocation: $downloadFileLocation'); |
| 93 | + downloadAsset(assetUrl, downloadFileLocation); |
| 94 | + } |
| 95 | + } |
| 96 | + }); |
| 97 | +} |
| 98 | + |
| 99 | +Future<void> downloadAsset(String assetUrl, Uri destinationFile) async { |
| 100 | + final downloadUri = Uri.parse(assetUrl); |
| 101 | + final downloadedFile = File(destinationFile.toFilePath()); |
| 102 | + log('Saving file to ${downloadedFile.absolute.path}'); |
| 103 | + |
| 104 | + final downloadResponse = await http.get(downloadUri); |
| 105 | + log('Download response: ${downloadResponse.statusCode}'); |
| 106 | + |
| 107 | + if (downloadResponse.statusCode == 200) { |
| 108 | + if (downloadedFile.existsSync()) { |
| 109 | + downloadedFile.deleteSync(); |
| 110 | + } |
| 111 | + downloadedFile.createSync(); |
| 112 | + log('Saved file to ${downloadedFile.absolute.path}\n'); |
| 113 | + downloadedFile.writeAsBytes(downloadResponse.bodyBytes); |
| 114 | + } else { |
| 115 | + log('${downloadResponse.statusCode} :: ${downloadResponse.body}'); |
| 116 | + throw Exception( |
| 117 | + '${downloadResponse.statusCode} :: ${downloadResponse.body}'); |
| 118 | + } |
| 119 | +} |
| 120 | + |
| 121 | +/// Translates native-assets architecture names into MediaPipe architecture names |
| 122 | +String getArchAlias(String arch) => |
| 123 | + <String, String>{ |
| 124 | + 'arm': 'arm64', |
| 125 | + }[arch] ?? |
| 126 | + arch; |
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