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    bigtable-kafka-connect

    1.0.19 • Public • Published

    bigtable-kafka-connect

    Kafka Connect connector for Google BigTable

    Use API

    npm install --save bigtable-kafka-connect
    

    bigtable -> kafka

    const { runSourceConnector } = require("bigtable-kafka-connect");
    runSourceConnector(config, [], onError).then(config => {
        //runs forever until: config.stop();
    });

    kafka -> bigtable

    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))

    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 🌱

    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)

    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

    Install

    npm i bigtable-kafka-connect

    DownloadsWeekly Downloads

    0

    Version

    1.0.19

    License

    MIT

    Last publish

    Collaborators

    • yacut