在节点js中使用Avro序列化数据

我想序列化来自JSON对象的数据,并通过网络将其发送到kafka作为结束.现在我在一个文件中有一个avro模式,它确定了为日志记录系统发送到kafka所需的字段:

{"namespace": "com.company.wr.messages",
   "type": "record",
   "name": "Log",
   "fields": [
       {"name": "timestamp", "type": "long"},
       {"name": "source", "type": "string"},
       {"name": "version", "type": "string"},
       {"name": "ipAddress", "type": "string"},
       {"name": "name", "type": "string"},
       {"name": "level", "type": "string"},
       {"name": "errorCode", "type": "string"},
       {"name": "message", "type": "string"}
       ]
}

我正在使用节点包'avro-schema',我尝试了其他的但是当时没有一个工作得很好,我只需要从节点js以avro方式序列化.

用avsc:

var avro = require('avsc');

// Parse the schema.
var logType = avro.parse({
  "namespace": "com.company.wr.messages",
  "type": "record",
  "name": "Log",
  "fields": [
    {"name": "timestamp", "type": "long"},
    {"name": "source", "type": "string"},
    {"name": "version", "type": "string"},
    {"name": "ipAddress", "type": "string"},
    {"name": "name", "type": "string"},
    {"name": "level", "type": "string"},
    {"name": "errorCode", "type": "string"},
    {"name": "message", "type": "string"}
  ]
});

// A sample log record.
var obj = {
  timestamp: 2313213,
  source: 'src',
  version: '1.0',
  ipAddress: '0.0.0.0',
  name: 'foo',
  level: 'INFO',
  errorCode: '',
  message: ''
};

// And its corresponding Avro encoding.
var buf = logType.toBuffer(obj);

您可以在此处找到有关各种编码方法的更多信息.