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vscode-react-native/src/debugger

src/debugger/scriptImporter.ts

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a31b007cunknown10 years ago1// Copyright (c) Microsoft Corporation. All rights reserved.
2// Licensed under the MIT license. See LICENSE file in the project root for details.
3
b0061ac6Meena Kunnathur Balakrishnan10 years ago4import {FileSystem} from "../common/node/fileSystem";
190e393cMeena Kunnathur Balakrishnan10 years ago5import {Log} from "../common/log/log";
6import {LogLevel} from "../common/log/logHelper";
87323739dlebu10 years ago7import {Packager} from "../common/packager";
3fb37ad5unknown10 years ago8import path = require("path");
9import Q = require("q");
b0061ac6Meena Kunnathur Balakrishnan10 years ago10import {Request} from "../common/node/request";
11import {SourceMapUtil} from "./sourceMap";
3fb37ad5unknown10 years ago12import url = require("url");
13
4677921cdigeff10 years ago14interface DownloadedScript {
15contents: string;
16filepath: string;
17}
18
3fb37ad5unknown10 years ago19export class ScriptImporter {
2743f19cdlebu10 years ago20public static DEBUGGER_WORKER_FILE_BASENAME = "debuggerWorker";
21public static DEBUGGER_WORKER_FILENAME = ScriptImporter.DEBUGGER_WORKER_FILE_BASENAME + ".js";
e3ae4227digeff10 years ago22private packagerPort: number;
4677921cdigeff10 years ago23private sourcesStoragePath: string;
4bd0c669dlebu10 years ago24private sourceMapUtil: SourceMapUtil;
3fb37ad5unknown10 years ago25
e3ae4227digeff10 years ago26constructor(packagerPort: number, sourcesStoragePath: string) {
27this.packagerPort = packagerPort;
4677921cdigeff10 years ago28this.sourcesStoragePath = sourcesStoragePath;
4bd0c669dlebu10 years ago29this.sourceMapUtil = new SourceMapUtil();
3fb37ad5unknown10 years ago30}
31
2743f19cdlebu10 years ago32public downloadAppScript(scriptUrlString: string, debugAdapterPort: number): Q.Promise<DownloadedScript> {
5e651f3edigeff10 years ago33const overridenScriptUrlString = this.overridePackagerPort(scriptUrlString);
34console.log("overriden " + overridenScriptUrlString);
e00f7325unknown10 years ago35// We'll get the source code, and store it locally to have a better debugging experience
5e651f3edigeff10 years ago36return new Request().request(overridenScriptUrlString, true).then(scriptBody => {
e00f7325unknown10 years ago37// Extract sourceMappingURL from body
5e651f3edigeff10 years ago38let scriptUrl = url.parse(overridenScriptUrlString); // scriptUrl = "http://localhost:8081/index.ios.bundle?platform=ios&dev=true"
4bd0c669dlebu10 years ago39let sourceMappingUrl = this.sourceMapUtil.getSourceMapURL(scriptUrl, scriptBody); // sourceMappingUrl = "http://localhost:8081/index.ios.map?platform=ios&dev=true"
e00f7325unknown10 years ago40
4677921cdigeff10 years ago41let waitForSourceMapping = Q<void>(null);
e00f7325unknown10 years ago42if (sourceMappingUrl) {
43/* handle source map - request it and store it locally */
2743f19cdlebu10 years ago44waitForSourceMapping = this.writeAppSourceMap(sourceMappingUrl, scriptUrl)
3af9a124unknown10 years ago45.then(() => {
4bd0c669dlebu10 years ago46scriptBody = this.sourceMapUtil.updateScriptPaths(scriptBody, sourceMappingUrl);
4677921cdigeff10 years ago47});
e00f7325unknown10 years ago48}
4677921cdigeff10 years ago49
50return waitForSourceMapping
2743f19cdlebu10 years ago51.then(() => this.writeAppScript(scriptBody, scriptUrl))
4677921cdigeff10 years ago52.then((scriptFilePath: string) => {
5e651f3edigeff10 years ago53Log.logInternalMessage(LogLevel.Info, `Script ${overridenScriptUrlString} downloaded to ${scriptFilePath}`);
4677921cdigeff10 years ago54return { contents: scriptBody, filepath: scriptFilePath };
87e1f776Jimmy Thomson10 years ago55}).finally(() => {
56// Request that the debug adapter update breakpoints and sourcemaps now that we have written them
2743f19cdlebu10 years ago57return new Request().request(`http://localhost:${debugAdapterPort}/refreshBreakpoints`);
876df2a0dlebu10 years ago58});
e00f7325unknown10 years ago59});
60}
61
2743f19cdlebu10 years ago62public downloadDebuggerWorker(sourcesStoragePath: string): Q.Promise<void> {
5e651f3edigeff10 years ago63let debuggerWorkerURL = `http://${Packager.getHostForPort(this.packagerPort)}/${ScriptImporter.DEBUGGER_WORKER_FILENAME}`;
2743f19cdlebu10 years ago64let debuggerWorkerLocalPath = path.join(sourcesStoragePath, ScriptImporter.DEBUGGER_WORKER_FILENAME);
65Log.logInternalMessage(LogLevel.Info, "About to download: " + debuggerWorkerURL + " to: " + debuggerWorkerLocalPath);
66return new Request().request(debuggerWorkerURL, true).then((body: string) => {
67return new FileSystem().writeFile(debuggerWorkerLocalPath, body);
68});
69}
70
e00f7325unknown10 years ago71/**
72* Writes the script file to the project temporary location.
73*/
2743f19cdlebu10 years ago74private writeAppScript(scriptBody: string, scriptUrl: url.Url): Q.Promise<String> {
f218397cdlebu10 years ago75let scriptFilePath = path.join(this.sourcesStoragePath, scriptUrl.pathname); // scriptFilePath = "$TMPDIR/index.ios.bundle"
76return new FileSystem().writeFile(scriptFilePath, scriptBody)
77.then(() => scriptFilePath);
3fb37ad5unknown10 years ago78}
79
e00f7325unknown10 years ago80/**
81* Writes the source map file to the project temporary location.
82*/
2743f19cdlebu10 years ago83private writeAppSourceMap(sourceMapUrl: url.Url, scriptUrl: url.Url): Q.Promise<void> {
e00f7325unknown10 years ago84return new Request().request(sourceMapUrl.href, true)
85.then((sourceMapBody: string) => {
4677921cdigeff10 years ago86let sourceMappingLocalPath = path.join(this.sourcesStoragePath, sourceMapUrl.pathname); // sourceMappingLocalPath = "$TMPDIR/index.ios.map"
e00f7325unknown10 years ago87let scriptFileRelativePath = path.basename(scriptUrl.pathname); // scriptFileRelativePath = "index.ios.bundle"
f218397cdlebu10 years ago88let updatedContent = this.sourceMapUtil.updateSourceMapFile(sourceMapBody, scriptFileRelativePath, this.sourcesStoragePath);
89return new FileSystem().writeFile(sourceMappingLocalPath, updatedContent);
e00f7325unknown10 years ago90});
3fb37ad5unknown10 years ago91}
5e651f3edigeff10 years ago92
93/**
94* Changes the port of the url to be the one configured as this.packagerPort
95*/
96private overridePackagerPort(urlToOverride: string): string {
97let components = url.parse(urlToOverride);
98components.port = this.packagerPort.toString();
99delete components.host; // We delete the host, if not the port change will be ignored
100return url.format(components);
101}
3fb37ad5unknown10 years ago102}