node-avro-io
v2.0.0
Published
This will allow you to encode / decode avro binary format to / from json format, it supports both deflate and snappy compressions and supports node streams
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Node Avro IO
Implements the avro spec
This status of this repository is initial release
npm install node-avro-io
or
npm install git://github.com/jamesbrucepower/node-avro-io.git
Serializing data to an avro binary file
var avro = require('./index').DataFile.AvroFile();
var schema = {
"name": "data",
"type": "record",
"fields": [
{"name":"key","type": "string"},
{"name":"value","type": "string"},
{"name":"flag","type": "boolean"},
{"name":"subrecord","type":"record","fields":[
{"name":"key","type":"string"},
{"name":"value","type":["string","int","null"]}
]}
]
};
var writer = avro.open("test.avro", schema, { flags: 'w', codec: 'deflate' });
writer
.append({ key:"john", value:"hive", flag: true, subrecord: { key: "preference", value: 2}})
.append({ key:"eric", value:"lola", flag: true, subrecord: { key: "postcode", value: null}})
.end({ key:"fred", value:"wonka", flag: false, subrecord: { key: "city", value: "michigan"}});
Deserializing data to from avro binary file
require("./index").DataFile.AvroFile()
.open('test.avro', null, { flags: 'r' })
.on('data', function(data) {
console.log(data);
});
See tests for more usage examples
TODO:
- Avro RPC
- Support for Trevni (column major data serialization)