Commit | Line | Data |
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ba9a56a6 | 1 | import type { IncomingMessage, ServerResponse } from 'node:http' |
1f7fa4de | 2 | |
66a7748d | 3 | import { StatusCodes } from 'http-status-codes' |
1f7fa4de | 4 | |
66a7748d | 5 | import { BaseError } from '../../exception/index.js' |
1f7fa4de | 6 | import { |
a6080904 | 7 | ApplicationProtocolVersion, |
276e05ae | 8 | MapStringifyFormat, |
e0b0ee21 JB |
9 | type ProcedureName, |
10 | type Protocol, | |
11 | type ProtocolRequest, | |
12 | type ProtocolResponse, | |
13 | type ProtocolVersion, | |
14 | type RequestPayload, | |
1f7fa4de | 15 | ResponseStatus, |
66a7748d JB |
16 | type UIServerConfiguration |
17 | } from '../../types/index.js' | |
a66bbcfe JB |
18 | import { |
19 | Constants, | |
a66bbcfe JB |
20 | generateUUID, |
21 | isNotEmptyString, | |
276e05ae | 22 | JSONStringify, |
4c3f6c20 JB |
23 | logger, |
24 | logPrefix | |
a66bbcfe | 25 | } from '../../utils/index.js' |
4c3f6c20 JB |
26 | import { AbstractUIServer } from './AbstractUIServer.js' |
27 | import { isProtocolAndVersionSupported } from './UIServerUtils.js' | |
1f7fa4de | 28 | |
66a7748d | 29 | const moduleName = 'UIHttpServer' |
1f7fa4de | 30 | |
1185579a JB |
31 | enum HttpMethods { |
32 | GET = 'GET', | |
33 | PUT = 'PUT', | |
34 | POST = 'POST', | |
a223d9be | 35 | PATCH = 'PATCH' |
1185579a JB |
36 | } |
37 | ||
268a74bb | 38 | export class UIHttpServer extends AbstractUIServer { |
66a7748d JB |
39 | public constructor (protected readonly uiServerConfiguration: UIServerConfiguration) { |
40 | super(uiServerConfiguration) | |
1f7fa4de JB |
41 | } |
42 | ||
66a7748d | 43 | public start (): void { |
ba9a56a6 | 44 | this.httpServer.on('request', this.requestListener.bind(this)) |
66a7748d | 45 | this.startHttpServer() |
1f7fa4de JB |
46 | } |
47 | ||
66a7748d | 48 | public sendRequest (request: ProtocolRequest): void { |
a6080904 JB |
49 | switch (this.uiServerConfiguration.version) { |
50 | case ApplicationProtocolVersion.VERSION_20: | |
66a7748d JB |
51 | this.httpServer.emit('request', request) |
52 | break | |
a6080904 | 53 | } |
1f7fa4de JB |
54 | } |
55 | ||
66a7748d JB |
56 | public sendResponse (response: ProtocolResponse): void { |
57 | const [uuid, payload] = response | |
976d11ec | 58 | try { |
66a7748d JB |
59 | if (this.hasResponseHandler(uuid)) { |
60 | const res = this.responseHandlers.get(uuid) as ServerResponse | |
b2e2c274 JB |
61 | res |
62 | .writeHead(this.responseStatusToStatusCode(payload.status), { | |
66a7748d | 63 | 'Content-Type': 'application/json' |
b2e2c274 | 64 | }) |
276e05ae | 65 | .end(JSONStringify(payload, undefined, MapStringifyFormat.object)) |
976d11ec JB |
66 | } else { |
67 | logger.error( | |
66a7748d JB |
68 | `${this.logPrefix(moduleName, 'sendResponse')} Response for unknown request id: ${uuid}` |
69 | ) | |
976d11ec JB |
70 | } |
71 | } catch (error) { | |
1f7fa4de | 72 | logger.error( |
976d11ec | 73 | `${this.logPrefix(moduleName, 'sendResponse')} Error at sending response id '${uuid}':`, |
66a7748d JB |
74 | error |
75 | ) | |
e2c77f10 | 76 | } finally { |
66a7748d | 77 | this.responseHandlers.delete(uuid) |
1f7fa4de JB |
78 | } |
79 | } | |
80 | ||
8b7072dc | 81 | public logPrefix = (modName?: string, methodName?: string, prefixSuffix?: string): string => { |
66a7748d | 82 | const logMsgPrefix = prefixSuffix != null ? `UI HTTP Server ${prefixSuffix}` : 'UI HTTP Server' |
1f7fa4de | 83 | const logMsg = |
9bf0ef23 | 84 | isNotEmptyString(modName) && isNotEmptyString(methodName) |
1b271a54 | 85 | ? ` ${logMsgPrefix} | ${modName}.${methodName}:` |
66a7748d JB |
86 | : ` ${logMsgPrefix} |` |
87 | return logPrefix(logMsg) | |
88 | } | |
1f7fa4de | 89 | |
66a7748d | 90 | private requestListener (req: IncomingMessage, res: ServerResponse): void { |
a974c8e4 | 91 | this.authenticate(req, err => { |
66a7748d | 92 | if (err != null) { |
b2e2c274 JB |
93 | res |
94 | .writeHead(StatusCodes.UNAUTHORIZED, { | |
95 | 'Content-Type': 'text/plain', | |
66a7748d | 96 | 'WWW-Authenticate': 'Basic realm=users' |
b2e2c274 JB |
97 | }) |
98 | .end(`${StatusCodes.UNAUTHORIZED} Unauthorized`) | |
915eeb3e | 99 | res.destroy() |
66a7748d | 100 | req.destroy() |
623b39b5 | 101 | } |
66a7748d | 102 | }) |
1f7fa4de JB |
103 | // Expected request URL pathname: /ui/:version/:procedureName |
104 | const [protocol, version, procedureName] = req.url?.split('/').slice(1) as [ | |
105 | Protocol, | |
106 | ProtocolVersion, | |
a223d9be | 107 | ProcedureName |
66a7748d JB |
108 | ] |
109 | const uuid = generateUUID() | |
110 | this.responseHandlers.set(uuid, res) | |
1f7fa4de | 111 | try { |
66a7748d | 112 | const fullProtocol = `${protocol}${version}` |
75adc3d8 | 113 | if (!isProtocolAndVersionSupported(fullProtocol)) { |
66a7748d | 114 | throw new BaseError(`Unsupported UI protocol version: '${fullProtocol}'`) |
1f7fa4de | 115 | } |
66a7748d | 116 | this.registerProtocolVersionUIService(version) |
a974c8e4 | 117 | req.on('error', error => { |
1f7fa4de | 118 | logger.error( |
a745e412 | 119 | `${this.logPrefix(moduleName, 'requestListener.req.onerror')} Error on HTTP request:`, |
66a7748d JB |
120 | error |
121 | ) | |
122 | }) | |
1185579a | 123 | if (req.method === HttpMethods.POST) { |
66a7748d | 124 | const bodyBuffer: Uint8Array[] = [] |
1f7fa4de | 125 | req |
e1d9a0f4 | 126 | .on('data', (chunk: Uint8Array) => { |
66a7748d | 127 | bodyBuffer.push(chunk) |
1f7fa4de JB |
128 | }) |
129 | .on('end', () => { | |
3000c125 | 130 | let requestPayload: RequestPayload | undefined |
71ac2bd7 | 131 | try { |
3000c125 | 132 | requestPayload = JSON.parse(Buffer.concat(bodyBuffer).toString()) as RequestPayload |
71ac2bd7 JB |
133 | } catch (error) { |
134 | this.sendResponse( | |
135 | this.buildProtocolResponse(uuid, { | |
136 | status: ResponseStatus.FAILURE, | |
137 | errorMessage: (error as Error).message, | |
138 | errorStack: (error as Error).stack | |
139 | }) | |
140 | ) | |
141 | return | |
142 | } | |
1f7fa4de JB |
143 | this.uiServices |
144 | .get(version) | |
3000c125 | 145 | ?.requestHandler(this.buildProtocolRequest(uuid, procedureName, requestPayload)) |
4a3807d1 | 146 | .then((protocolResponse?: ProtocolResponse) => { |
66a7748d JB |
147 | if (protocolResponse != null) { |
148 | this.sendResponse(protocolResponse) | |
0b22144c JB |
149 | } |
150 | }) | |
66a7748d JB |
151 | .catch(Constants.EMPTY_FUNCTION) |
152 | }) | |
1f7fa4de | 153 | } else { |
66a7748d | 154 | throw new BaseError(`Unsupported HTTP method: '${req.method}'`) |
1f7fa4de JB |
155 | } |
156 | } catch (error) { | |
a745e412 JB |
157 | logger.error( |
158 | `${this.logPrefix(moduleName, 'requestListener')} Handle HTTP request error:`, | |
66a7748d JB |
159 | error |
160 | ) | |
161 | this.sendResponse(this.buildProtocolResponse(uuid, { status: ResponseStatus.FAILURE })) | |
1f7fa4de JB |
162 | } |
163 | } | |
164 | ||
66a7748d | 165 | private responseStatusToStatusCode (status: ResponseStatus): StatusCodes { |
771633ff JB |
166 | switch (status) { |
167 | case ResponseStatus.SUCCESS: | |
66a7748d | 168 | return StatusCodes.OK |
771633ff | 169 | case ResponseStatus.FAILURE: |
66a7748d | 170 | return StatusCodes.BAD_REQUEST |
771633ff | 171 | default: |
66a7748d | 172 | return StatusCodes.INTERNAL_SERVER_ERROR |
771633ff JB |
173 | } |
174 | } | |
1f7fa4de | 175 | } |