avro-js

import * as avro from 'avro-js'; // 1. Define an Avro schema for a 'Pet' record const petType = avro.parse({ name: 'Pet', type: 'record', fields: [ {name: 'kind', type: {name: 'Kind', type: 'enum', symbols: ['CAT', 'DOG', 'FISH']}}, {name: 'name', type: 'string'}, {name: 'age', type: 'int', default: 0} ] }); // 2. Create a JavaScript object conforming to the schema const myPet = {kind: 'CAT', name: 'Albert', age: 5}; // 3. Serialize the object to an Avro binary buffer const buffer = petType.toBuffer(myPet); console.log('Serialized Buffer:', buffer.toString('hex')); // 4. Deserialize the buffer back into a JavaScript object const deserializedPet = petType.fromBuffer(buffer); console.log('Deserialized Object:', deserializedPet); // 5. Generate a random instance of the schema const randomIdType = avro.parse('{"type": "fixed", "name": "Id", "size": 4}'); const randomId = randomIdType.random(); console.log('Random ID (Buffer):', randomId.toString('hex')); // 6. Check if an object is valid against a schema const isValid = petType.isValid({kind: 'DOG', name: 'Buddy'}); console.log('Is valid pet object:', isValid); const isInvalid = petType.isValid({kind: 'FISH', unknownField: 'extra'}); console.log('Is invalid pet object (extra field):', isInvalid);