Node.js Native API

Apache IoTDB uses Thrift as a cross-language RPC-framework so access to IoTDB can be achieved through the interfaces provided by Thrift. This document will introduce how to generate a native Node.js interface that can be used to access IoTDB.

Dependents

• JDK >= 1.8
• Node.js >= 16.0.0
• Linux、Macos or like unix
• Windows+bash

Generate the Node.js native interface

1. Find the pom.xml file in the root directory of the IoTDB source code folder.

2. Open the pom.xml file and find the following content:

    <execution>
        <id>generate-thrift-sources-python</id>
        <phase>generate-sources</phase>
        <goals>
            <goal>compile</goal>
        </goals>
        <configuration>
            <generator>py</generator>
            <outputDirectory>${project.build.directory}/generated-sources-python/</outputDirectory>
        </configuration>
    </execution>

3. Duplicate this block and change the id, generator and outputDirectory to this:

    <execution>
        <id>generate-thrift-sources-nodejs</id>
        <phase>generate-sources</phase>
        <goals>
            <goal>compile</goal>
        </goals>
        <configuration>
            <generator>js:node</generator>
            <outputDirectory>${project.build.directory}/generated-sources-nodejs/</outputDirectory>
        </configuration>
    </execution>

4. In the root directory of the IoTDB source code folder，run mvn clean generate-sources.

   This command will automatically delete the files in iotdb/iotdb-protocol/thrift/target and iotdb/iotdb-protocol/thrift-commons/target, and repopulate the folder with the newly generated files. The newly generated JavaScript sources will be located in iotdb/iotdb-protocol/thrift/target/generated-sources-nodejs in the various modules of the iotdb-protocol module.

Using the Node.js native interface

Simply copy the files in iotdb/iotdb-protocol/thrift/target/generated-sources-nodejs/ and iotdb/iotdb-protocol/thrift-commons/target/generated-sources-nodejs/ into your project.

rpc interface

// open a session
TSOpenSessionResp openSession(1:TSOpenSessionReq req);

// close a session
TSStatus closeSession(1:TSCloseSessionReq req);

// run an SQL statement in batch
TSExecuteStatementResp executeStatement(1:TSExecuteStatementReq req);

// execute SQL statement in batch
TSStatus executeBatchStatement(1:TSExecuteBatchStatementReq req);

// execute query SQL statement
TSExecuteStatementResp executeQueryStatement(1:TSExecuteStatementReq req);

// execute insert, delete and update SQL statement
TSExecuteStatementResp executeUpdateStatement(1:TSExecuteStatementReq req);

// fetch next query result
TSFetchResultsResp fetchResults(1:TSFetchResultsReq req)

// fetch meta data
TSFetchMetadataResp fetchMetadata(1:TSFetchMetadataReq req)

// cancel a query
TSStatus cancelOperation(1:TSCancelOperationReq req);

// close a query dataset
TSStatus closeOperation(1:TSCloseOperationReq req);

// get time zone
TSGetTimeZoneResp getTimeZone(1:i64 sessionId);

// set time zone
TSStatus setTimeZone(1:TSSetTimeZoneReq req);

// get server's properties
ServerProperties getProperties();

// CREATE DATABASE
TSStatus setStorageGroup(1:i64 sessionId, 2:string storageGroup);

// create timeseries
TSStatus createTimeseries(1:TSCreateTimeseriesReq req);

// create multi timeseries
TSStatus createMultiTimeseries(1:TSCreateMultiTimeseriesReq req);

// delete timeseries
TSStatus deleteTimeseries(1:i64 sessionId, 2:list<string> path)

// delete sttorage groups
TSStatus deleteStorageGroups(1:i64 sessionId, 2:list<string> storageGroup);

// insert record
TSStatus insertRecord(1:TSInsertRecordReq req);

// insert record in string format
TSStatus insertStringRecord(1:TSInsertStringRecordReq req);

// insert tablet
TSStatus insertTablet(1:TSInsertTabletReq req);

// insert tablets in batch
TSStatus insertTablets(1:TSInsertTabletsReq req);

// insert records in batch
TSStatus insertRecords(1:TSInsertRecordsReq req);

// insert records of one device
TSStatus insertRecordsOfOneDevice(1:TSInsertRecordsOfOneDeviceReq req);

// insert records in batch as string format
TSStatus insertStringRecords(1:TSInsertStringRecordsReq req);

// test the latency of innsert tablet，caution：no data will be inserted, only for test latency
TSStatus testInsertTablet(1:TSInsertTabletReq req);

// test the latency of innsert tablets，caution：no data will be inserted, only for test latency
TSStatus testInsertTablets(1:TSInsertTabletsReq req);

// test the latency of innsert record，caution：no data will be inserted, only for test latency
TSStatus testInsertRecord(1:TSInsertRecordReq req);

// test the latency of innsert record in string format，caution：no data will be inserted, only for test latency
TSStatus testInsertStringRecord(1:TSInsertStringRecordReq req);

// test the latency of innsert records，caution：no data will be inserted, only for test latency
TSStatus testInsertRecords(1:TSInsertRecordsReq req);

// test the latency of innsert records of one device，caution：no data will be inserted, only for test latency
TSStatus testInsertRecordsOfOneDevice(1:TSInsertRecordsOfOneDeviceReq req);

// test the latency of innsert records in string formate，caution：no data will be inserted, only for test latency
TSStatus testInsertStringRecords(1:TSInsertStringRecordsReq req);

// delete data
TSStatus deleteData(1:TSDeleteDataReq req);

// execute raw data query
TSExecuteStatementResp executeRawDataQuery(1:TSRawDataQueryReq req);

// request a statement id from server
i64 requestStatementId(1:i64 sessionId);