70 lines
1.8 KiB
JavaScript
70 lines
1.8 KiB
JavaScript
const Constants = require("./constants.js");
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const Commons = require("./commons.js");
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const Cloudevent = require("../../cloudevent.js");
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const Spec02 = require("../../specs/spec_0_2.js");
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var JSONParser = require("../../formats/json/parser.js");
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const spec02 = new Spec02();
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const jsonParserSpec02 = new JSONParser();
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const parser_by_mime = {};
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parser_by_mime[Constants.MIME_JSON] = jsonParserSpec02;
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parser_by_mime[Constants.MIME_CE_JSON] = jsonParserSpec02;
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const allowed_content_types = [];
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allowed_content_types.push(Constants.MIME_CE_JSON);
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function validate_args(payload, attributes) {
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if(!payload){
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throw {message: "payload is null or undefined"};
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}
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if(!attributes) {
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throw {message: "attributes is null or undefined"};
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}
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if((typeof payload) !== "object" && (typeof payload) !== "string"){
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throw {message: "payload must be an object or string",
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erros: [typeof payload]};
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}
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}
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function Receiver(configuration) {
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}
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Receiver.prototype.check = function(payload, headers) {
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validate_args(payload, headers);
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var sanity_headers = Commons.sanity_and_clone(headers);
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// Validation Level 1
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if(!allowed_content_types
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.includes(sanity_headers[Constants.HEADER_CONTENT_TYPE])){
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throw {message: "invalid content type",
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errors: [sanity_headers[Constants.HEADER_CONTENT_TYPE]]};
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}
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// No erros! Its contains the minimum required attributes
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}
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Receiver.prototype.parse = function(payload, headers) {
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this.check(payload, headers);
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var sanity_headers = Commons.sanity_and_clone(headers);
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var contentType = sanity_headers[Constants.HEADER_CONTENT_TYPE];
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var parser = parser_by_mime[contentType];
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var cloudevent = parser.parse(payload);
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// Must follow the spec
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spec02.check(cloudevent);
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return cloudevent;
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}
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module.exports = Receiver;
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