microsoft/vscode-react-native
Publicmirrored from https://github.com/microsoft/vscode-react-nativeAvailable
src/extension/extensionServer.ts
139lines · modecode
| 1 | // Copyright (c) Microsoft Corporation. All rights reserved. |
| 2 | // Licensed under the MIT license. See LICENSE file in the project root for details. |
| 3 | |
| 4 | import * as em from "../common/extensionMessaging"; |
| 5 | import * as http from "http"; |
| 6 | import {ILaunchArgs} from "../common/launchArgs"; |
| 7 | import {Packager} from "../common/packager"; |
| 8 | import * as Q from "q"; |
| 9 | import {SettingsHelper} from "./settingsHelper"; |
| 10 | import * as vscode from "vscode"; |
| 11 | |
| 12 | |
| 13 | export class ExtensionServer implements vscode.Disposable { |
| 14 | |
| 15 | private serverInstance: http.Server = null; |
| 16 | private messageHandlerDictionary: { [id: number]: ((...argArray: any[]) => Q.Promise<any>) } = {}; |
| 17 | private reactNativePackager: Packager; |
| 18 | |
| 19 | public constructor(reactNativePackager: Packager) { |
| 20 | this.reactNativePackager = reactNativePackager; |
| 21 | |
| 22 | /* register handlers for all messages */ |
| 23 | this.messageHandlerDictionary[em.ExtensionMessage.START_PACKAGER] = this.startPackager; |
| 24 | this.messageHandlerDictionary[em.ExtensionMessage.STOP_PACKAGER] = this.stopPackager; |
| 25 | this.messageHandlerDictionary[em.ExtensionMessage.PREWARM_BUNDLE_CACHE] = this.prewarmBundleCache; |
| 26 | } |
| 27 | |
| 28 | /** |
| 29 | * Starts the server. |
| 30 | */ |
| 31 | public setup(): Q.Promise<void> { |
| 32 | |
| 33 | let deferred = Q.defer<void>(); |
| 34 | |
| 35 | let requestHandler = (request: http.IncomingMessage, response: http.ServerResponse) => { |
| 36 | this.handleIncomingMessage(request, response); |
| 37 | }; |
| 38 | |
| 39 | let launchCallback = (error: any) => { |
| 40 | if (error) { |
| 41 | deferred.reject(error); |
| 42 | } else { |
| 43 | deferred.resolve(null); |
| 44 | } |
| 45 | }; |
| 46 | |
| 47 | let port = em.ServerDefaultParams.PORT; |
| 48 | SettingsHelper.readLaunchJson() |
| 49 | .then((launchJson: any) => { |
| 50 | if (launchJson) { |
| 51 | /* take the fist configuration that specifies the port */ |
| 52 | port = (<Array<ILaunchArgs>>launchJson.configurations) |
| 53 | .filter((configuration: ILaunchArgs, index: number, array: any[]) => { |
| 54 | return !!configuration.internalExtensionPort; |
| 55 | })[0].internalExtensionPort; |
| 56 | } |
| 57 | }) |
| 58 | .fail(() => { /* using default port in case of any error */ }) |
| 59 | .done(() => { |
| 60 | this.serverInstance = http.createServer(requestHandler); |
| 61 | this.serverInstance.listen(port, null, null, launchCallback); |
| 62 | }); |
| 63 | |
| 64 | return deferred.promise; |
| 65 | } |
| 66 | |
| 67 | /** |
| 68 | * Stops the server. |
| 69 | */ |
| 70 | public dispose(): void { |
| 71 | if (this.serverInstance) { |
| 72 | this.serverInstance.close(); |
| 73 | this.serverInstance = null; |
| 74 | } |
| 75 | } |
| 76 | |
| 77 | /** |
| 78 | * Message handler for START_PACKAGER. |
| 79 | */ |
| 80 | private startPackager(): Q.Promise<any> { |
| 81 | return this.reactNativePackager.start(vscode.window.createOutputChannel("React-Native")); |
| 82 | } |
| 83 | |
| 84 | /** |
| 85 | * Message handler for STOP_PACKAGER. |
| 86 | */ |
| 87 | private stopPackager(): Q.Promise<any> { |
| 88 | return this.reactNativePackager.stop(vscode.window.createOutputChannel("React-Native")); |
| 89 | } |
| 90 | |
| 91 | /** |
| 92 | * Message handler for PREWARM_BUNDLE_CACHE. |
| 93 | */ |
| 94 | private prewarmBundleCache(platform: string): Q.Promise<any> { |
| 95 | console.log("Prewarming bundle cache for platform: " + platform); |
| 96 | return this.reactNativePackager.prewarmBundleCache(platform); |
| 97 | } |
| 98 | |
| 99 | /** |
| 100 | * HTTP request handler. |
| 101 | */ |
| 102 | private handleIncomingMessage(message: http.IncomingMessage, response: http.ServerResponse): void { |
| 103 | let body = ""; |
| 104 | message.on("data", (chunk: string) => { |
| 105 | body += chunk; |
| 106 | }); |
| 107 | |
| 108 | message.on("end", () => { |
| 109 | let args: any[]; |
| 110 | if (body) { |
| 111 | args = JSON.parse(body); |
| 112 | } |
| 113 | let extensionMessage: em.ExtensionMessage = <any>em.ExtensionMessage[<any>message.url.substring(1)]; |
| 114 | |
| 115 | this.handleExtensionMessage(extensionMessage, args) |
| 116 | .then(result => { |
| 117 | response.writeHead(200, "OK", { "Content-Type": "application/json" }); |
| 118 | response.end(JSON.stringify(result)); |
| 119 | }) |
| 120 | .catch(() => { |
| 121 | response.writeHead(404, "Not Found"); |
| 122 | response.end(); |
| 123 | }) |
| 124 | .done(); |
| 125 | }); |
| 126 | } |
| 127 | |
| 128 | /** |
| 129 | * Extension message handler. |
| 130 | */ |
| 131 | private handleExtensionMessage(message: em.ExtensionMessage, args?: any[]): Q.Promise<any> { |
| 132 | let handler = this.messageHandlerDictionary[message]; |
| 133 | if (handler) { |
| 134 | return handler.apply(this, args); |
| 135 | } else { |
| 136 | return Q.reject("Invalid message: " + message); |
| 137 | } |
| 138 | } |
| 139 | } |
| 140 | |