Examples with KvStoreClient com.ibm.etcd.client.KvStoreClient used on opensource projects

Example 1 with KvStoreClient

use of com.ibm.etcd.client.KvStoreClient in project etcd-java by IBM.

the class KvTest method testKvOps.

@Test
public void testKvOps() throws Exception {
    proxy.start();
    try (KvStoreClient directClient = EtcdClient.forEndpoint("localhost", 2379).withPlainText().build();
        KvStoreClient client = EtcdClient.forEndpoint("localhost", 2391).withPlainText().build()) {
        KvClient kvc = client.getKvClient();
        assertEquals(0L, kvc.delete(bs("notthere")).sync().getDeleted());
        ByteString a = bs("a"), b = bs("b"), v1 = bs("v1"), v2 = bs("v2");
        // basic put
        assertTrue(kvc.put(a, v1).sync().getHeader().getRevision() > 0);
        // basic get
        RangeResponse rr = kvc.get(bs("a")).sync();
        assertEquals(1L, rr.getCount());
        assertEquals(v1, rr.getKvs(0).getValue());
        // basic delete
        assertEquals(v1, kvc.delete(a).prevKv().sync().getPrevKvs(0).getValue());
        assertEquals(0, kvc.get(bs("a")).sync().getCount());
        PutRequest pr1 = kvc.put(a, v1).asRequest(), pr2 = kvc.put(b, v2).asRequest();
        // batch put
        assertEquals(2, kvc.batch().put(pr1).put(pr2).sync().getResponsesCount());
        assertEquals(v1, kvc.get(a).sync().getKvs(0).getValue());
        assertEquals(v2, kvc.get(b).sync().getKvs(0).getValue());
        // basic transaction
        ListenableFuture<TxnResponse> tresp = kvc.txnIf().cmpEqual(a).value(v1).and().cmpNotEqual(b).version(10).then().put(kvc.put(bs("new"), bs("newval")).asRequest()).async();
        assertNotNull(tresp.get().getResponses(0).getResponsePut().getHeader());
        // test disconnected behaviour
        proxy.kill();
        Thread.sleep(200L);
        // should fail
        ListenableFuture<RangeResponse> rrFut1 = kvc.get(bs("new")).async();
        ListenableFuture<RangeResponse> rrFut2 = kvc.get(bs("new")).backoffRetry().async();
        try {
            rrFut1.get(1000, TimeUnit.SECONDS);
            fail("expected get to fail while disconnected");
        } catch (Exception e) {
            // TODO
            System.out.println("failed with: " + e);
        }
        // this one should still be retrying
        assertFalse(rrFut2.isDone());
        // reconnect
        proxy.start();
        // should succeed once network path is there again
        long before = System.nanoTime();
        RangeResponse rr2 = rrFut2.get(2000, TimeUnit.SECONDS);
        long took = (System.nanoTime() - before) / 1000_000L;
        assertEquals(bs("newval"), rr2.getKvs(0).getValue());
        System.out.println("took " + took + "ms after network was reestablished");
    } finally {
        proxy.close();
    }
}