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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
e45838cbVladimir Kotikov9 years ago32public downloadAppScript(scriptUrlString: string): Q.Promise<DownloadedScript> {
1c32fe84Patricio Beltran9 years ago33const parsedScriptUrl = url.parse(scriptUrlString);
34const overriddenScriptUrlString = (parsedScriptUrl.hostname === "localhost") ? this.overridePackagerPort(scriptUrlString) : scriptUrlString;
e00f7325unknown10 years ago35// We'll get the source code, and store it locally to have a better debugging experience
5db8b6deMark Oswald10 years ago36return new Request().request(overriddenScriptUrlString, true).then(scriptBody => {
e00f7325unknown10 years ago37// Extract sourceMappingURL from body
5db8b6deMark Oswald10 years ago38let scriptUrl = url.parse(overriddenScriptUrlString); // 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) => {
5db8b6deMark Oswald10 years ago53Log.logInternalMessage(LogLevel.Info, `Script ${overriddenScriptUrlString} downloaded to ${scriptFilePath}`);
4677921cdigeff10 years ago54return { contents: scriptBody, filepath: scriptFilePath };
876df2a0dlebu10 years ago55});
e00f7325unknown10 years ago56});
57}
58
2743f19cdlebu10 years ago59public downloadDebuggerWorker(sourcesStoragePath: string): Q.Promise<void> {
299b0557Patricio Beltran10 years ago60return Packager.isPackagerRunning(Packager.getHostForPort(this.packagerPort))
61.then(running => {
62if (running) {
63let debuggerWorkerURL = `http://${Packager.getHostForPort(this.packagerPort)}/${ScriptImporter.DEBUGGER_WORKER_FILENAME}`;
64let 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}
70throw new RangeError(`Cannot attach to packager. Are you sure there is a packager and it is running in the port ${this.packagerPort}? If your packager is configured to run in another port make sure to add that to the setting.json.`);
71});
2743f19cdlebu10 years ago72}
73
e00f7325unknown10 years ago74/**
75* Writes the script file to the project temporary location.
76*/
2743f19cdlebu10 years ago77private writeAppScript(scriptBody: string, scriptUrl: url.Url): Q.Promise<String> {
bb77358cMark Oswald10 years ago78let scriptFilePath = path.join(this.sourcesStoragePath, path.basename(scriptUrl.pathname)); // scriptFilePath = "$TMPDIR/index.ios.bundle"
f218397cdlebu10 years ago79return new FileSystem().writeFile(scriptFilePath, scriptBody)
80.then(() => scriptFilePath);
3fb37ad5unknown10 years ago81}
82
e00f7325unknown10 years ago83/**
84* Writes the source map file to the project temporary location.
85*/
2743f19cdlebu10 years ago86private writeAppSourceMap(sourceMapUrl: url.Url, scriptUrl: url.Url): Q.Promise<void> {
e00f7325unknown10 years ago87return new Request().request(sourceMapUrl.href, true)
88.then((sourceMapBody: string) => {
bb77358cMark Oswald10 years ago89let sourceMappingLocalPath = path.join(this.sourcesStoragePath, path.basename(sourceMapUrl.pathname)); // sourceMappingLocalPath = "$TMPDIR/index.ios.map"
90let scriptFileRelativePath = path.basename(scriptUrl.pathname); // scriptFileRelativePath = "index.ios.bundle"
f218397cdlebu10 years ago91let updatedContent = this.sourceMapUtil.updateSourceMapFile(sourceMapBody, scriptFileRelativePath, this.sourcesStoragePath);
92return new FileSystem().writeFile(sourceMappingLocalPath, updatedContent);
e00f7325unknown10 years ago93});
3fb37ad5unknown10 years ago94}
5e651f3edigeff10 years ago95
96/**
97* Changes the port of the url to be the one configured as this.packagerPort
98*/
99private overridePackagerPort(urlToOverride: string): string {
100let components = url.parse(urlToOverride);
101components.port = this.packagerPort.toString();
102delete components.host; // We delete the host, if not the port change will be ignored
103return url.format(components);
104}
3fb37ad5unknown10 years ago105}