50 lines
1.4 KiB
JavaScript
50 lines
1.4 KiB
JavaScript
const axios = require("axios");
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const Constants = require("./constants.js");
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const defaults = {};
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defaults[Constants.HEADERS] = {};
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defaults[Constants.HEADERS][Constants.HEADER_CONTENT_TYPE] =
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Constants.DEFAULT_CONTENT_TYPE;
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function BinaryHTTPEmitter(config, headerByGetter, extensionPrefix) {
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this.config = Object.assign({}, defaults, config);
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this.headerByGetter = headerByGetter;
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this.extensionPrefix = extensionPrefix;
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}
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BinaryHTTPEmitter.prototype.emit = function(cloudevent) {
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const config = Object.assign({}, this.config);
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const headers = Object.assign({}, this.config[Constants.HEADERS]);
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Object.keys(this.headerByGetter)
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.filter((getter) => cloudevent[getter]())
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.forEach((getter) => {
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const header = this.headerByGetter[getter];
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headers[header.name] =
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header.parser(
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cloudevent[getter]()
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);
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});
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// Set the cloudevent payload
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const formatted = cloudevent.format();
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let data = formatted.data;
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data = (formatted.data_base64 ? formatted.data_base64 : data);
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// Have extensions?
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const exts = cloudevent.getExtensions();
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Object.keys(exts)
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.filter((ext) => Object.hasOwnProperty.call(exts, ext))
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.forEach((ext) => {
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headers[this.extensionPrefix + ext] = exts[ext];
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});
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config[Constants.DATA_ATTRIBUTE] = data;
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config.headers = headers;
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// Return the Promise
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return axios.request(config);
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};
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module.exports = BinaryHTTPEmitter;
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