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Parsing socket #255
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sirenkovladd
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Parsing socket #255
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,107 @@ | ||
| 'use strict' | ||
|
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| const doInject = require('./do-inject') | ||
|
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| const errorMessage = 'The dispatch function has already been invoked' | ||
|
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| class Chain { | ||
| _hasInvoked = false | ||
| _promise = null | ||
| option | ||
| dispatch | ||
|
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| constructor (dispatch, option) { | ||
| this.dispatch = dispatch | ||
| if (typeof option === 'string') { | ||
| this.option = { url: option } | ||
| } else { | ||
| this.option = Object.assign({}, option) | ||
| } | ||
|
|
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| if (this.option.autoStart !== false) { | ||
| process.nextTick(() => { | ||
| if (!this._hasInvoked) { | ||
| this.end() | ||
| } | ||
| }) | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * @private | ||
| * @param {string} method | ||
| * @param {string} url | ||
| */ | ||
| wrapHttpMethod (method, url) { | ||
| if (this._hasInvoked === true || this._promise) { | ||
| throw new Error(errorMessage) | ||
| } | ||
| this.option.url = url | ||
| this.option.method = method.toUpperCase() | ||
| return this | ||
| } | ||
|
|
||
| delete (url) { return this.wrapHttpMethod('delete', url) } | ||
| get (url) { return this.wrapHttpMethod('get', url) } | ||
| head (url) { return this.wrapHttpMethod('head', url) } | ||
| options (url) { return this.wrapHttpMethod('options', url) } | ||
| patch (url) { return this.wrapHttpMethod('patch', url) } | ||
| post (url) { return this.wrapHttpMethod('post', url) } | ||
| put (url) { return this.wrapHttpMethod('put', url) } | ||
| trace (url) { return this.wrapHttpMethod('trace', url) } | ||
|
|
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| /** | ||
| * @private | ||
| * @param {string} method | ||
| * @param {string} url | ||
| */ | ||
| wrapChainMethod (method, value) { | ||
| if (this._hasInvoked === true || this._promise) { | ||
| throw new Error(errorMessage) | ||
| } | ||
| this.option[method] = value | ||
| return this | ||
| } | ||
|
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| body (url) { return this.wrapChainMethod('body', url) } | ||
| cookies (url) { return this.wrapChainMethod('cookies', url) } | ||
| headers (url) { return this.wrapChainMethod('headers', url) } | ||
| payload (url) { return this.wrapChainMethod('payload', url) } | ||
| query (url) { return this.wrapChainMethod('query', url) } | ||
|
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| end (callback) { | ||
| if (this._hasInvoked === true || this._promise) { | ||
| throw new Error(errorMessage) | ||
| } | ||
| this._hasInvoked = true | ||
| if (typeof callback === 'function') { | ||
| doInject(this.dispatch, this.option, callback) | ||
| } else { | ||
| this._promise = doInject(this.dispatch, this.option) | ||
| return this._promise | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * @private | ||
| * @template {keyof Promise} T | ||
| * @param {T} method | ||
| * @param {Parameters<Promise[T]>} args | ||
| */ | ||
| promisify (method, args) { | ||
| if (!this._promise) { | ||
| if (this._hasInvoked === true) { | ||
| throw new Error(errorMessage) | ||
| } | ||
| this._hasInvoked = true | ||
| this._promise = doInject(this.dispatch, this.option) | ||
| } | ||
| return this._promise[method](...args) | ||
| } | ||
|
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| then (...args) { return this.promisify('then', args) } | ||
| catch (...args) { return this.promisify('catch', args) } | ||
| finally (...args) { return this.promisify('finally', args) } | ||
| } | ||
|
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| module.exports = Chain | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,77 @@ | ||
| 'use strict' | ||
|
|
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| const assert = require('assert') | ||
| const optsValidator = require('./config-validator') | ||
| const Request = require('./request') | ||
| const { Response, once } = require('./response') | ||
| const { Readable, addAbortSignal } = require('stream') | ||
|
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| function promisify (fn) { | ||
| if (fn) { | ||
| return { ret: Promise.resolve(), cb: once(fn) } | ||
| } | ||
| let resolve, reject | ||
| const ret = new Promise((_resolve, _reject) => { | ||
| resolve = _resolve | ||
| reject = _reject | ||
| }) | ||
| return { | ||
| ret, | ||
| cb: (err, res) => { | ||
| err ? reject(err) : resolve(res) | ||
| } | ||
| } | ||
| } | ||
|
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| function makeRequest (dispatchFunc, server, req, res) { | ||
| req.socket.once('close', function () { | ||
| res.emit('close') | ||
| }) | ||
|
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| return req.prepare(() => dispatchFunc.call(server, req, res), (err) => { res.emit('error', err) }) | ||
| } | ||
|
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| function doInject (dispatchFunc, options, callback) { | ||
| options = (typeof options === 'string' ? { url: options } : options) | ||
|
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| if (options.validate !== false) { | ||
| assert(typeof dispatchFunc === 'function', 'dispatchFunc should be a function') | ||
| const isOptionValid = optsValidator(options) | ||
| if (!isOptionValid) { | ||
| throw new Error(optsValidator.errors.map(e => e.message)) | ||
| } | ||
| } | ||
|
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| const server = options.server || {} | ||
|
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| const RequestConstructor = options.Request | ||
| ? Request.getCustomRequest(options.Request) | ||
| : Request | ||
|
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| // Express.js detection | ||
| if (dispatchFunc.request && dispatchFunc.request.app === dispatchFunc) { | ||
| Object.setPrototypeOf(Object.getPrototypeOf(dispatchFunc.request), RequestConstructor.prototype) | ||
| Object.setPrototypeOf(Object.getPrototypeOf(dispatchFunc.response), Response.prototype) | ||
| } | ||
|
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| const { ret, cb } = promisify(callback) | ||
|
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| const req = new RequestConstructor(options) | ||
| const res = new Response(req, cb) | ||
|
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| if (options.signal) { | ||
| const r = new Readable() | ||
| r.once('error', (err) => { | ||
| cb(err) | ||
| res.destroy(err) | ||
| }) | ||
| res.once('close', () => { | ||
| r.destroy() | ||
| }) | ||
| addAbortSignal(options.signal, r) | ||
| } | ||
|
|
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| return Promise.resolve().then(() => makeRequest(dispatchFunc, server, req, res)).then(() => ret) | ||
| } | ||
|
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| module.exports = doInject |
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This refactor could be another PR - smaller PRs helps to get the code merged faster