{ "name": "CrudApiDelete", "nodes": [ { "parameters": { "httpMethod": "DELETE", "path": "api/messages/:id", "responseMode": "responseNode", "options": {} }, "type": "n8n-nodes-base.webhook", "typeVersion": 2.1, "position": [ -80, 0 ], "id": "4adf4004-711c-4367-a8e0-f8eeff388f3b", "name": "Webhook" }, { "parameters": { "queue": "Crud_Delete", "options": {} }, "type": "n8n-nodes-base.rabbitmq", "typeVersion": 1.1, "position": [ 912, 0 ], "id": "0e4483f4-cad7-4929-8d8e-d1324b068b6c", "name": "RabbitMQ", "credentials": { "rabbitmq": { "name": "" } } }, { "parameters": { "respondWith": "json", "responseBody": "{\n \"type\": \"https://example.com/probs/internal-error\",\n \"title\": \"Internal Server Error\",\n \"status\": 500,\n \"detail\": \"Ocorreu um erro interno inesperado ao processar sua solicita\u00e7\u00e3o.\",\n \"instance\": \"/api/messages\",\n \"request_id\": \"req_xyz987\"\n}", "options": { "responseCode": 500 } }, "type": "n8n-nodes-base.respondToWebhook", "typeVersion": 1.4, "position": [ 272, 144 ], "id": "32f7db19-63df-44dd-bcbf-b27c6f94f811", "name": "error_500" }, { "parameters": { "jsCode": "const item = $input.item;\n\nif(item.json === undefined || item.json === null){\n item.json = {};\n}\n\n\nconst crypto = require('crypto');\n\nconst secretKey = 'seu-segredo-secreto';\n\nfunction base64UrlDecode(data) {\n let base64 = data.replace(/-/g, '+').replace(/_/g, '/');\n \n while (base64.length % 4) {\n base64 += '=';\n }\n return Buffer.from(base64, 'base64').toString('utf8');\n}\n\n\ntry {\n \n const authHeader = $json.headers['authorization'];\n\n if (!authHeader || !authHeader.startsWith('Bearer ')) {\n throw new Error('Authorization header missing or invalid');\n }\n\n \n const token = authHeader.split(' ')[1];\n\n \n const [encodedHeader, encodedPayload, signature] = token.split('.');\n\n if (!encodedHeader || !encodedPayload || !signature) {\n throw new Error('Invalid token format');\n }\n\n \n const dataToSign = `${encodedHeader}.${encodedPayload}`;\n const expectedSignature = crypto\n .createHmac('sha256', secretKey)\n .update(dataToSign)\n .digest('base64url');\n\n \n const sigBuffer = Buffer.from(signature, 'base64url');\n const expectedSigBuffer = Buffer.from(expectedSignature, 'base64url');\n\n if (sigBuffer.length !== expectedSigBuffer.length || !crypto.timingSafeEqual(sigBuffer, expectedSigBuffer)) {\n throw new Error('Invalid signature');\n }\n\n \n const payload = JSON.parse(base64UrlDecode(encodedPayload));\n const nowInSeconds = Math.floor(Date.now() / 1000);\n\n if (payload.exp < nowInSeconds) {\n throw new Error('Token has expired');\n }\n\n \n item.json.auth_user = payload;\n item.json.isValid = true;\n\n} catch (Error) {\n\n item.json.isValid = false;\n item.json.errorDetails = Error.message;\n}\n\nreturn item;" }, "type": "n8n-nodes-base.code", "typeVersion": 2, "position": [ 96, 0 ], "id": "0ca41e55-2854-4cea-9ab0-f6265873df59", "name": "token_Validation", "onError": "continueErrorOutput" }, { "parameters": { "conditions": { "options": { "caseSensitive": true, "leftValue": "", "typeValidation": "strict", "version": 2 }, "conditions": [ { "id": "6ee1deb8-ade6-4e8c-98e3-ff69028b1eb1", "leftValue": "={{ $json.isValid }}", "rightValue": "", "operator": { "type": "boolean", "operation": "true", "singleValue": true } } ], "combinator": "and" }, "options": {} }, "type": "n8n-nodes-base.if", "typeVersion": 2.2, "position": [ 272, 0 ], "id": "18d0a073-aa9b-4cb1-99c1-babf110a3dd7", "name": "token_Is_Valid" }, { "parameters": { "jsCode": "\nconst uuidRegex = /^[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}$/;\n\nconst returnItems = [];\n\nfor (const item of $input.all()) {\n try {\n \n if (item.json === undefined || item.json === null) {\n item.json = {};\n }\n \n \n const id = item.json.params.id;\n \n \n if (!id || !uuidRegex.test(id)) {\n item.json.id_validation_error = {\n type: \"https://example.com/probs/invalid-parameter\",\n title: \"Invalid Parameter\",\n status: 400,\n detail: \"The 'id' parameter in the URL is missing or not a valid UUID.\",\n instance: item.json.webhookUrl || 'webhookUrl_not_found'\n };\n } else {\n item.json.id_validation_error = null;\n }\n \n } catch (error) {\n item.json.id_validation_error = {\n type: \"https://example.com/probs/internal-error\",\n title: \"Internal Server Error\",\n status: 500,\n detail: \"An unexpected error occurred during ID validation: \" + error.message\n };\n }\n\n returnItems.push(item);\n}\n\n\nreturn returnItems;" }, "type": "n8n-nodes-base.code", "typeVersion": 2, "position": [ 496, 0 ], "id": "a3eac238-856e-47b5-8f55-fd494fefdaf5", "name": "id_Validation", "onError": "continueErrorOutput" }, { "parameters": { "conditions": { "options": { "caseSensitive": true, "leftValue": "", "typeValidation": "strict", "version": 2 }, "conditions": [ { "id": "bb2fa213-a725-4dbc-9e0e-c142d71a68af", "leftValue": "={{ $json.id_validation_error }}", "rightValue": "", "operator": { "type": "string", "operation": "notEmpty", "singleValue": true } } ], "combinator": "and" }, "options": {} }, "type": "n8n-nodes-base.if", "typeVersion": 2.2, "position": [ 704, 0 ], "id": "086de467-e047-491f-88c3-357d587689db", "name": "id_Validation_Error_Is_Not_Empty" }, { "parameters": { "respondWith": "json", "responseBody": "{\n\"type\": \"https://example.com/probs/invalid-input\",\n \"title\": \"Invalid id\",\n \"status\": 400,\n \"detail\": \"One or more fields failed validation\",\n \"instance\": \"/api/messages/:id\"}", "options": { "responseCode": 400 } }, "type": "n8n-nodes-base.respondToWebhook", "typeVersion": 1.4, "position": [ 912, 144 ], "id": "54eca7dd-4a16-4330-8537-9ff262f4ffb9", "name": "error_400" }, { "parameters": { "respondWith": "json", "responseBody": "{\n \"title\": \"unauthorized\",\n \"status\": 401,\n \"detail\": \"invalid or expired token\"\n}", "options": { "responseCode": 401 } }, "type": "n8n-nodes-base.respondToWebhook", "typeVersion": 1.4, "position": [ 496, 144 ], "id": "1ed43445-15f7-49f4-b330-91e55a694678", "name": "error_401" }, { "parameters": { "respondWith": "json", "responseBody": "{\n \"type\": \"https://example.com/probs/internal-error\",\n \"title\": \"Internal Server Error\",\n \"status\": 500,\n \"detail\": \"Ocorreu um erro interno inesperado ao processar sua solicita\u00e7\u00e3o.\",\n \"instance\": \"/api/messages\",\n \"request_id\": \"req_xyz987\"\n}", "options": { "responseCode": 500 } }, "type": "n8n-nodes-base.respondToWebhook", "typeVersion": 1.4, "position": [ 704, 144 ], "id": "79313418-d4c6-423b-bec2-2d180598fa51", "name": "error_500_" }, { "parameters": { "respondWith": "json", "responseBody": "{\n \"status\": 202,\n \"title\": \"accepted\"\n}", "options": { "responseCode": 202 } }, "type": "n8n-nodes-base.respondToWebhook", "typeVersion": 1.4, "position": [ 1104, 0 ], "id": "7a1d4561-538d-4a46-9abb-93ac200119d2", "name": "accepted_202" } ], "connections": { "Webhook": { "main": [ [ { "node": "token_Validation", "type": "main", "index": 0 } ] ] }, "RabbitMQ": { "main": [ [ { "node": "accepted_202", "type": "main", "index": 0 } ] ] }, "token_Validation": { "main": [ [ { "node": "token_Is_Valid", "type": "main", "index": 0 } ], [ { "node": "error_500", "type": "main", "index": 0 } ] ] }, "token_Is_Valid": { "main": [ [ { "node": "id_Validation", "type": "main", "index": 0 } ], [ { "node": "error_401", "type": "main", "index": 0 } ] ] }, "id_Validation": { "main": [ [ { "node": "id_Validation_Error_Is_Not_Empty", "type": "main", "index": 0 } ], [ { "node": "error_500_", "type": "main", "index": 0 } ] ] }, "id_Validation_Error_Is_Not_Empty": { "main": [ [ { "node": "error_400", "type": "main", "index": 0 } ], [ { "node": "RabbitMQ", "type": "main", "index": 0 } ] ] } }, "active": false, "settings": { "executionOrder": "v1" }, "versionId": "d55fb305-7a1c-4a3f-8dce-3dc0f8899e4f", "meta": { "templateCredsSetupCompleted": true }, "id": "OqEKBj7ov7ZGebfW", "tags": [] }