jetcd is the official java client for etcd v3.
Note: jetcd is work-in-progress and may break backward compatibility.
Java 8 or above is required.
<dependency>
<groupId>io.etcd</groupId>
<artifactId>jetcd-core</artifactId>
<version>${jetcd-version}</version>
</dependency>
Development snapshots are available in Sonatypes's snapshot repository.
dependencies {
compile "io.etcd:jetcd-core:$jetcd-version"
}
// create client
Client client = Client.builder().endpoints("http://localhost:2379").build();
KV kvClient = client.getKVClient();
ByteSequence key = ByteSequence.from("test_key".getBytes());
ByteSequence value = ByteSequence.from("test_value".getBytes());
// put the key-value
kvClient.put(key, value).get();
// get the CompletableFuture
CompletableFuture<GetResponse> getFuture = kvClient.get(key);
// get the value from CompletableFuture
GetResponse response = getFuture.get();
// delete the key
kvClient.delete(key).get();
For full etcd v3 API, plesase refer to API_Reference.
The examples are standalone projects that show usage of jetcd.
The io.etcd:jetcd-launcher
offers a convenient utility to programmatically start & stop an isolated etcd
server. This can be very useful e.g. for integration testing, like so:
@Rule public final EtcdClusterResource etcd = new EtcdClusterResource("test-etcd", 1);
Client client = Client.builder().endpoints(etcd.cluster().getClientEndpoints()).build();
This launcher uses the Testcontainers framework. For more info and prerequisites visit testcontainers.org.
The project follows Semantic Versioning.
The current major version is zero (0.y.z). Anything may change at any time. The public API should not be considered stable.
The project is tested against a three node etcd
setup started with the Launcher (above) :
$ mvn test
...
[INFO] T E S T S
[INFO] -------------------------------------------------------
[INFO] Running TestSuite
[WARNING] Tests run: 104, Failures: 0, Errors: 0, Skipped: 3, Time elapsed: 31.308 s - in TestSuite
[INFO]
[INFO] Results:
[INFO]
[WARNING] Tests run: 104, Failures: 0, Errors: 0, Skipped: 3
...
[INFO] Reactor Summary:
[INFO]
[INFO] jetcd .............................................. SUCCESS [ 0.010 s]
[INFO] jetcd-core ......................................... SUCCESS [ 55.480 s]
[INFO] jetcd-discovery-dns-srv ............................ SUCCESS [ 3.225 s]
[INFO] jetcd-watch-example ................................ SUCCESS [ 0.291 s]
[INFO] jetcd-simple-ctl ................................... SUCCESS [ 0.028 s]
[INFO] jetcd-examples ..................................... SUCCESS [ 0.000 s]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 59.929 s
[INFO] Finished at: 2018-02-13T12:51:13-08:00
[INFO] Final Memory: 84M/443M
- Mailing list: etcd-dev
- IRC: #etcd on freenode.org
See CONTRIBUTING for details on submitting patches and the contribution workflow.
See reporting bugs for details about reporting any issues.
jetcd is under the Apache 2.0 license. See the LICENSE file for details.