https://github.com/nodefluent/bigtable-kafka-connect

wip
https://github.com/nodefluent/bigtable-kafka-connect

Last synced: 2 months ago
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• Host: GitHub
• URL: https://github.com/nodefluent/bigtable-kafka-connect
• Owner: nodefluent
• License: mit
• Created: 2017-07-17T15:29:56.000Z (over 7 years ago)
• Default Branch: master
• Last Pushed: 2022-12-06T22:02:35.000Z (about 2 years ago)
• Last Synced: 2024-04-14T07:54:11.983Z (9 months ago)
• Language: JavaScript
• Size: 553 KB
• Stars: 3
• Watchers: 7
• Forks: 2
• Open Issues: 11
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

• awesome-kafka - BigTable

README

        
# bigtable-kafka-connect

Kafka Connect connector for Google BigTable

## Use API

```

npm install --save bigtable-kafka-connect

```

### bigtable -> kafka

```es6

const { runSourceConnector } = require("bigtable-kafka-connect");

runSourceConnector(config, [], onError).then(config => {

    //runs forever until: config.stop();

});

```

### kafka -> bigtable

```es6

const { runSinkConnector } = require("bigtable-kafka-connect");

runSinkConnector(config, [], onError).then(config => {

    //runs forever until: config.stop();

});

```

### kafka -> bigtable (with custom topic (no source-task topic))

```es6

const { runSinkConnector, ConverterFactory } = require("bigtable-kafka-connect");

const etlFunc = (messageValue, callback) => {

    //type is an example json format field

    if (messageValue.type === "publish") {

        return callback(null, {

            id: messageValue.payload.id,

            name: messageValue.payload.name,

            info: messageValue.payload.info

        });

    }

    if (messageValue.type === "unpublish") {

        return callback(null, null); //null value will cause deletion

    }

    callback(new Error("unknown messageValue.type"));

};

const converter = ConverterFactory.createSinkSchemaConverter(etlFunc);

runSinkConnector(config, [converter], onError).then(config => {

    //runs forever until: config.stop();

});

/*

    this example would be able to store kafka message values

    that look like this (so completely unrelated to messages created by a default SourceTask)

    {

        payload: {

            id: 1,

            name: "first item",

            info: "some info"

        },

        type: "publish"

    }

*/

```

## Use CLI

note: in BETA :seedling:

```

npm install -g bigtable-kafka-connect

```

```

# run source etl: bigtable -> kafka

nkc-bigtable-source --help

```

```

# run sink etl: kafka -> bigtable

nkc-bigtable-sink --help

```

## Config(uration)

```es6

const config = {

    kafka: {

        kafkaHost: "localhost:9092",

        logger: null,

        groupId: "kc-bigtable-test",

        clientName: "kc-bigtable-test-name",

        workerPerPartition: 1,

        options: {

            sessionTimeout: 8000,

            protocol: ["roundrobin"],

            fromOffset: "earliest", //latest

            fetchMaxBytes: 1024 * 100,

            fetchMinBytes: 1,

            fetchMaxWaitMs: 10,

            heartbeatInterval: 250,

            retryMinTimeout: 250,

            requireAcks: 1,

            //ackTimeoutMs: 100,

            //partitionerType: 3

        }

    },

    topic: "sc_test_topic",

    partitions: 1,

    maxTasks: 1,

    pollInterval: 2000,

    produceKeyed: true,

    produceCompressionType: 0,

    connector: {

        batchSize: 500,

        maxPollCount: 500,

        projectId: "bt-project-id",

        dataset: "bt_dataset",

        table: "bt_table",

        columnFamily: "bt_family",

        idColumn: "id"

    },

    http: {

        port: 3149,

        middlewares: []

    },

    enableMetrics: true

};

```

### Links

- [BigTable API Documentation](https://googlecloudplatform.github.io/google-cloud-node/#/docs/bigtable/master/bigtable)