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cdk8s-operator

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Create Kubernetes CRD Operators using CDK8s Constructs

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"use strict"; var _a; Object.defineProperty(exports, "__esModule", { value: true }); exports.Server = void 0; const JSII_RTTI_SYMBOL_1 = Symbol.for("jsii.rtti"); const child_process_1 = require("child_process"); const fs_1 = require("fs"); const http_1 = require("http"); const os_1 = require("os"); const path_1 = require("path"); class Server { constructor(props) { this.appCommand = props.appCommand; this.server = (0, http_1.createServer)((req, res) => this.handleRequest(req, res).catch(e => { console.error('server error: ', e); res.statusCode = 500; res.write(e.message); res.end(); })); this.tmpdir = (0, fs_1.mkdtempSync)((0, path_1.join)((0, os_1.tmpdir)(), 'cdk8s-operator-')); } /** * Starts HTTP server. * @param port The port to listen to. If not specified, the `PORT` environment * variable will be used. If that's not specified an available port will be * auto-selected. */ async listen(port) { const lport = port ?? process.env.PORT ?? 0; return new Promise((ok, ko) => { this.server.listen(lport, () => { const addr = this.server.address(); if (typeof (addr) === 'string') { throw new Error(`cannot determine port from server address ${addr}`); } return ok(addr?.port ?? Number(lport)); }); this.server.on('error', err => ko(err)); }); } /** * Stop server. */ close() { this.server.close(); } async handleRequest(req, res) { const inputfile = await this.writeInputFile(req); const child = (0, child_process_1.spawn)(this.appCommand, [inputfile], { stdio: ['ignore', 'pipe', 'pipe'], shell: true, }); const stderr = new Array(); res.setHeader('Content-Type', 'application/json'); // stdout should go directly to the response child.stdout.on('data', chunk => { process.stderr.write('output: ' + chunk); res.write(chunk); }); // for stderr: write to server terminal and only send back if we exited with a non-zero child.stderr.on('data', chunk => { process.stderr.write(chunk); stderr.push(chunk); }); // will be caused by the async handler and 500 will be returned. child.on('error', err => { throw err; }); child.on('exit', code => { if (code !== 0) { res.statusCode = 500; for (const c of stderr) { res.write(c); } res.end(); } // success return res.end(); }); } async writeInputFile(req) { return new Promise((ok, ko) => { const inputfile = (0, path_1.join)(this.tmpdir, `input-${Math.round(Math.random() * 999999)}.json`); const input = (0, fs_1.createWriteStream)(inputfile); req.pipe(input); input.on('close', () => { try { const inputJson = JSON.parse((0, fs_1.readFileSync)(inputfile, 'utf-8')); console.error(`input: ${JSON.stringify(inputJson)}`); return ok(inputfile); } catch (e) { return ko(new Error(`unable to parse request body as JSON: ${e}`)); } }); req.on('error', err => ko(err.message)); }); } } exports.Server = Server; _a = JSII_RTTI_SYMBOL_1; Server[_a] = { fqn: "cdk8s-operator.Server", version: "0.1.398" }; //# 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{ spawn } from 'child_process';\nimport { createWriteStream, mkdtempSync, readFileSync } from 'fs';\nimport { createServer, IncomingMessage, Server as HttpServer, ServerResponse } from 'http';\nimport { tmpdir } from 'os';\nimport { join } from 'path';\n\nexport interface ServerProps {\n  /**\n   * The command to execute in order to synthesize the CDK app.\n   */\n  readonly appCommand: string;\n}\n\nexport class Server {\n  private readonly server: HttpServer;\n  private readonly appCommand: string;\n  private readonly tmpdir: string;\n\n  constructor(props: ServerProps) {\n    this.appCommand = props.appCommand;\n\n    this.server = createServer((req, res) => this.handleRequest(req, res).catch(e => {\n      console.error('server error: ', e);\n      res.statusCode = 500;\n      res.write(e.message);\n      res.end();\n    }));\n\n    this.tmpdir = mkdtempSync(join(tmpdir(), 'cdk8s-operator-'));\n  }\n\n  /**\n   * Starts HTTP server.\n   * @param port The port to listen to. If not specified, the `PORT` environment\n   * variable will be used. If that's not specified an available port will be\n   * auto-selected.\n   */\n  public async listen(port?: number): Promise<number> {\n    const lport = port ?? process.env.PORT ?? 0;\n    return new Promise((ok, ko) => {\n      this.server.listen(lport, () => {\n        const addr = this.server.address();\n        if (typeof(addr) === 'string') {\n          throw new Error(`cannot determine port from server address ${addr}`);\n        }\n\n        return ok(addr?.port ?? Number(lport));\n      });\n\n      this.server.on('error', err => ko(err));\n    });\n  }\n\n  /**\n   * Stop server.\n   */\n  public close() {\n    this.server.close();\n  }\n\n  private async handleRequest(req: IncomingMessage, res: ServerResponse) {\n    const inputfile = await this.writeInputFile(req);\n\n    const child = spawn(this.appCommand, [inputfile], {\n      stdio: ['ignore', 'pipe', 'pipe'],\n      shell: true,\n    });\n\n    const stderr = new Array<Buffer>();\n\n    res.setHeader('Content-Type', 'application/json');\n\n    // stdout should go directly to the response\n    child.stdout.on('data', chunk => {\n      process.stderr.write('output: ' + chunk);\n      res.write(chunk);\n    });\n\n    // for stderr: write to server terminal and only send back if we exited with a non-zero\n    child.stderr.on('data', chunk => {\n      process.stderr.write(chunk);\n      stderr.push(chunk);\n    });\n\n    // will be caused by the async handler and 500 will be returned.\n    child.on('error', err => {\n      throw err;\n    });\n\n    child.on('exit', code => {\n      if (code !== 0) {\n        res.statusCode = 500;\n        for (const c of stderr) {\n          res.write(c);\n        }\n        res.end();\n      }\n\n      // success\n      return res.end();\n    });\n  }\n\n  private async writeInputFile(req: IncomingMessage): Promise<string> {\n    return new Promise((ok, ko) => {\n      const inputfile = join(this.tmpdir, `input-${Math.round(Math.random() * 999999)}.json`);\n      const input = createWriteStream(inputfile);\n      req.pipe(input);\n\n      input.on('close', () => {\n        try {\n          const inputJson = JSON.parse(readFileSync(inputfile, 'utf-8'));\n          console.error(`input: ${JSON.stringify(inputJson)}`);\n          return ok(inputfile);\n        } catch (e) {\n          return ko(new Error(`unable to parse request body as JSON: ${e}`));\n        }\n      });\n\n      req.on('error', err => ko(err.message));\n    });\n  }\n}\n"]}