influxdb-client-java

This repository contains the Java client library for use with InfluxDB 2.x and Flux. Currently, Java, Reactive, Kotlin and Scala clients are implemented. InfluxDB 3.x users should instead use the lightweight v3 client library. InfluxDB 1.x users should use the v1 client library.

For ease of migration and a consistent query and write experience, v2 users should consider using InfluxQL and the v1 client library.

• Features
• Clients
• How To Use
• Writes and Queries in InfluxDB 2.x
• Use Management API to create a new Bucket in InfluxDB 2.x
• Flux queries in InfluxDB 1.7+
• Build Requirements
• Contributing
• License

Documentation

This section contains links to the client library documentation.

• Product documentation, Getting Started
• Examples
• API Reference
• Changelog

Features

• InfluxDB 2.x client
• Querying data using the Flux language
• Querying data using the InfluxQL
• Writing data using
  • Line Protocol
  • Data Point
  • POJO
• InfluxDB 2.x Management API client for managing
  • sources, buckets
  • tasks
  • authorizations
  • health check
  • …
• Supports querying using the Flux language over the InfluxDB 1.7+ REST API (/api/v2/query endpoint)

Clients

The Java, Reactive, OSGi, Kotlin and Scala clients are implemented for the InfluxDB 2.x:

There is also possibility to use the Flux language over the InfluxDB 1.7+ provided by:

The last useful part is flux-dsl that helps construct Flux query by Query builder pattern:

1. Flux flux = Flux
2. .from("telegraf")
3. .window(15L, ChronoUnit.MINUTES, 20L, ChronoUnit.SECONDS)
4. .sum();

How To Use

This clients are hosted in Maven central Repository.

If you want to use it with the Maven, you have to add only the dependency on the artifact.

Writes and Queries in InfluxDB 2.x

The following example demonstrates how to write data to InfluxDB 2.x and read them back using the Flux language.

Installation

Download the latest version:

Maven dependency:

1. <dependency>
2. <groupId>com.influxdb</groupId>
3. <artifactId>influxdb-client-java</artifactId>
4. <version>7.2.0</version>
5. </dependency>

Or when using Gradle:

1. dependencies {
2. implementation "com.influxdb:influxdb-client-java:7.2.0"
3. }

1. package example;

3. import java.time.Instant;
4. import java.util.List;

6. import com.influxdb.annotations.Column;
7. import com.influxdb.annotations.Measurement;
8. import com.influxdb.client.InfluxDBClient;
9. import com.influxdb.client.InfluxDBClientFactory;
10. import com.influxdb.client.QueryApi;
11. import com.influxdb.client.WriteApiBlocking;
12. import com.influxdb.client.domain.WritePrecision;
13. import com.influxdb.client.write.Point;
14. import com.influxdb.query.FluxRecord;
15. import com.influxdb.query.FluxTable;

17. public class InfluxDB2Example {

19. private static char[] token = "my-token".toCharArray();
20. private static String org = "my-org";
21. private static String bucket = "my-bucket";

23. public static void main(final String[] args) {

25. InfluxDBClient influxDBClient = InfluxDBClientFactory.create("http://localhost:8086", token, org, bucket);

27. //
28. // Write data
29. //
30. WriteApiBlocking writeApi = influxDBClient.getWriteApiBlocking();

32. //
33. // Write by Data Point
34. //
35. Point point = Point.measurement("temperature")
36. .addTag("location", "west")
37. .addField("value", 55D)
38. .time(Instant.now().toEpochMilli(), WritePrecision.MS);

40. writeApi.writePoint(point);

42. //
43. // Write by LineProtocol
44. //
45. writeApi.writeRecord(WritePrecision.NS, "temperature,location=north value=60.0");

47. //
48. // Write by POJO
49. //
50. Temperature temperature = new Temperature();
51. temperature.location = "south";
52. temperature.value = 62D;
53. temperature.time = Instant.now();

55. writeApi.writeMeasurement( WritePrecision.NS, temperature);

57. //
58. // Query data
59. //
60. String flux = "from(bucket:\"my-bucket\") |> range(start: 0)";

62. QueryApi queryApi = influxDBClient.getQueryApi();

64. List<FluxTable> tables = queryApi.query(flux);
65. for (FluxTable fluxTable : tables) {
66. List<FluxRecord> records = fluxTable.getRecords();
67. for (FluxRecord fluxRecord : records) {
68. System.out.println(fluxRecord.getTime() + ": " + fluxRecord.getValueByKey("_value"));
69. }
70. }

72. influxDBClient.close();
73. }

75. @Measurement(name = "temperature")
76. private static class Temperature {

78. @Column(tag = true)
79. String location;

81. @Column
82. Double value;

84. @Column(timestamp = true)
85. Instant time;
86. }
87. }

Use Management API to create a new Bucket in InfluxDB 2.x

The following example demonstrates how to use a InfluxDB 2.x Management API. For further information see client documentation.

Installation

Download the latest version:

Maven dependency:

1. <dependency>
2. <groupId>com.influxdb</groupId>
3. <artifactId>influxdb-client-java</artifactId>
4. <version>7.2.0</version>
5. </dependency>

Or when using Gradle:

1. dependencies {
2. implementation "com.influxdb:influxdb-client-java:7.2.0"
3. }

1. package example;

3. import java.util.Arrays;

5. import com.influxdb.client.InfluxDBClient;
6. import com.influxdb.client.InfluxDBClientFactory;
7. import com.influxdb.client.domain.Authorization;
8. import com.influxdb.client.domain.Bucket;
9. import com.influxdb.client.domain.Permission;
10. import com.influxdb.client.domain.PermissionResource;
11. import com.influxdb.client.domain.BucketRetentionRules;

13. public class InfluxDB2ManagementExample {

15. private static char[] token = "my-token".toCharArray();

17. public static void main(final String[] args) {

19. InfluxDBClient influxDBClient = InfluxDBClientFactory.create("http://localhost:8086", token);

21. //
22. // Create bucket "iot_bucket" with data retention set to 3,600 seconds
23. //
24. BucketRetentionRules retention = new BucketRetentionRules();
25. retention.setEverySeconds(3600);

27. Bucket bucket = influxDBClient.getBucketsApi().createBucket("iot-bucket", retention, "12bdc4164c2e8141");

29. //
30. // Create access token to "iot_bucket"
31. //
32. PermissionResource resource = new PermissionResource();
33. resource.setId(bucket.getId());
34. resource.setOrgID("12bdc4164c2e8141");
35. resource.setType(PermissionResource.TYPE_BUCKETS);

37. // Read permission
38. Permission read = new Permission();
39. read.setResource(resource);
40. read.setAction(Permission.ActionEnum.READ);

42. // Write permission
43. Permission write = new Permission();
44. write.setResource(resource);
45. write.setAction(Permission.ActionEnum.WRITE);

47. Authorization authorization = influxDBClient.getAuthorizationsApi()
48. .createAuthorization("12bdc4164c2e8141", Arrays.asList(read, write));

50. //
51. // Created token that can be use for writes to "iot_bucket"
52. //
53. String token = authorization.getToken();
54. System.out.println("Token: " + token);

56. influxDBClient.close();
57. }
58. }

InfluxDB 1.8 API compatibility

InfluxDB 1.8.0 introduced forward compatibility APIs for InfluxDB 2.x. This allow you to easily move from InfluxDB 1.x to InfluxDB 2.x Cloud or open source.

The following forward compatible APIs are available:

For detail info see InfluxDB 1.8 example.

Flux queries in InfluxDB 1.7+

The following example demonstrates querying using the Flux language.

Installation

Download the latest version:

Maven dependency:

1. <dependency>
2. <groupId>com.influxdb</groupId>
3. <artifactId>influxdb-client-flux</artifactId>
4. <version>7.2.0</version>
5. </dependency>

Or when using Gradle:

1. dependencies {
2. implementation "com.influxdb:influxdb-client-flux:7.2.0"
3. }

1. package example;

3. import java.util.List;

5. import com.influxdb.client.flux.FluxClient;
6. import com.influxdb.client.flux.FluxClientFactory;
7. import com.influxdb.query.FluxRecord;
8. import com.influxdb.query.FluxTable;

10. public class FluxExample {

12. public static void main(String[] args) {

14. FluxClient fluxClient = FluxClientFactory.create("http://localhost:8086/");

16. //
17. // Flux
18. //
19. String flux = "from(bucket: \"telegraf\")\n" +
20. " |> range(start: -1d)" +
21. " |> filter(fn: (r) => (r[\"_measurement\"] == \"cpu\" and r[\"_field\"] == \"usage_system\"))" +
22. " |> sample(n: 5, pos: 1)";

24. //
25. // Synchronous query
26. //
27. List<FluxTable> tables = fluxClient.query(flux);

29. for (FluxTable fluxTable : tables) {
30. List<FluxRecord> records = fluxTable.getRecords();
31. for (FluxRecord fluxRecord : records) {
32. System.out.println(fluxRecord.getTime() + ": " + fluxRecord.getValueByKey("_value"));
33. }
34. }

36. //
37. // Asynchronous query
38. //
39. fluxClient.query(flux, (cancellable, record) -> {

41. // process the flux query result record
42. System.out.println(record.getTime() + ": " + record.getValue());

44. }, error -> {

46. // error handling while processing result
47. System.out.println("Error occurred: "+ error.getMessage());

49. }, () -> {

51. // on complete
52. System.out.println("Query completed");
53. });

55. fluxClient.close();
56. }
57. }

Build Requirements

• Java 17+ (tested with JDK 17)
• ⚠️ If you want to use older version of JDK, you have to use the 6.x version of the client.
• Maven 3.0+ (tested with maven 3.5.0)
• Docker daemon running
• The latest InfluxDB 2.x and InfluxDB 1.X docker instances, which can be started using the ./scripts/influxdb-restart.sh script

Once these are in place you can build influxdb-client-java with all tests with:

1. $ mvn clean install

If you don’t have Docker running locally, you can skip tests with the -DskipTests flag set to true:

1. $ mvn clean install -DskipTests=true

If you have Docker running, but it is not available over localhost (e.g. you are on a Mac and using docker-machine) you can set optional environment variables to point to the correct IP addresses and ports:

• INFLUXDB_IP
• INFLUXDB_PORT_API
• INFLUXDB_2_IP
• INFLUXDB_2_PORT_API

1. $ export INFLUXDB_IP=192.168.99.100
2. $ mvn test

Contributing

If you would like to contribute code you can do through GitHub by forking the repository and sending a pull request into the master branch.

License

The InfluxDB 2.x JVM Based Clients are released under the MIT License.