Examples of com.tinkerpop.gremlin.driver.Cluster

com.tinkerpop.gremlin.driver.Cluster
.genoprime.com)

        }
    }


    @Test
    public void shouldGarbageCollectPhantomButNotHard() throws Exception {
        final Cluster cluster = Cluster.open();
        final Client client = cluster.connect();


        assertEquals(2, client.submit("sum(1,1)").all().join().get(0).getInt());
        assertEquals(0, client.submit("def subtract(x,y){x-y};subtract(1,1)").all().join().get(0).getInt());
        assertEquals(0, client.submit("subtract(1,1)").all().join().get(0).getInt());


        final Map<String, Object> bindings = new HashMap<>();
        bindings.put(GremlinGroovyScriptEngine.KEY_REFERENCE_TYPE, GremlinGroovyScriptEngine.REFERENCE_TYPE_PHANTOM);
        assertEquals(4, client.submit("def multiply(x,y){x*y};multiply(2,2)", bindings).all().join().get(0).getInt());


        try {
            client.submit("multiply(2,2)").all().join().get(0).getInt();
            fail("Should throw an exception since reference is phantom.");
        } catch (RuntimeException ignored) {


        } finally {
            cluster.close();
        }
    }

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        }
    }


    @Test
    public void shouldReceiveFailureOnBadSerialization() throws Exception {
        final Cluster cluster = Cluster.build("localhost").serializer(Serializers.JSON_V1D0).create();
        final Client client = cluster.connect();


        try {
            client.submit("def class C { def C getC(){return this}}; new C()").all().join();
            fail("Should throw an exception.");
        } catch (RuntimeException re) {
            assertTrue(re.getCause().getCause().getMessage().startsWith("Error during serialization: Direct self-reference leading to cycle (through reference chain:"));
        } finally {
            cluster.close();
        }
    }

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        }
    }


    @Test
    public void shouldBlockRequestWhenTooBig() throws Exception {
        final Cluster cluster = Cluster.open();
        final Client client = cluster.connect();


        try {
            final String fatty = IntStream.range(0, 1024).mapToObj(String::valueOf).collect(Collectors.joining());
            final CompletableFuture<ResultSet> result = client.submitAsync("'" + fatty + "';'test'");
            final ResultSet resultSet = result.get();
            resultSet.all().get();
            fail("Should throw an exception.");
        } catch (Exception re) {
            // can't seem to catch the server side exception - as the channel is basically closed on this error
            // can only detect a closed channel and react to that.  in some ways this is a good general piece of
            // code to have in place, but kinda stinky when you want something specific about why all went bad
            assertTrue(re.getCause().getMessage().equals("Error while processing results from channel - check client and server logs for more information"));
        } finally {
            cluster.close();
        }
    }

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        }
    }


    @Test
    public void shouldFailOnDeadHost() throws Exception {
        final Cluster cluster = Cluster.build("localhost").serializer(Serializers.JSON_V1D0).create();
        final Client client = cluster.connect();


        // ensure that connection to server is good
        assertEquals(2, client.submit("1+1").all().join().get(0).getInt());


        // kill the server which will make the client mark the host as unavailable
        this.stopServer();


        try {
            // try to re-issue a request now that the server is down
            client.submit("1+1").all().join();
            fail();
        } catch (RuntimeException re) {
            assertTrue(re.getCause().getCause() instanceof ClosedChannelException);
        } finally {
            cluster.close();
        }
    }

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        }
    }


    @Test
    public void shouldHaveTheSessionTimeout() throws Exception {
        final Cluster cluster = Cluster.build().create();
        final Client client = cluster.connect(name.getMethodName());


        final ResultSet results1 = client.submit("x = [1,2,3,4,5,6,7,8,9]");
        final AtomicInteger counter = new AtomicInteger(0);
        results1.stream().map(i -> i.get(Integer.class) * 2).forEach(i -> assertEquals(counter.incrementAndGet() * 2, Integer.parseInt(i.toString())));


        final ResultSet results2 = client.submit("x[0]+1");
        assertEquals(2, results2.all().get().get(0).getInt());


        // session times out in 3 seconds
        Thread.sleep(3500);


        try {
            client.submit("x[1]+2").all().get();
            fail("Session should be dead");
        } catch (Exception ex) {
            final Exception cause = (Exception) ex.getCause().getCause();
            assertTrue(cause instanceof ResponseException);
            assertEquals(ResponseStatusCode.SERVER_ERROR_SCRIPT_EVALUATION, ((ResponseException) cause).getResponseStatusCode());
        }


        cluster.close();
    }

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    // todo: get this test to pass - count connection and block incoming requests.
    @Test
    @org.junit.Ignore
    public void shouldBlockWhenMaxConnectionsExceeded() throws Exception {
        final Cluster cluster = Cluster.open();
        final Client client = cluster.connect();


        try {
            final CompletableFuture<ResultSet> result = client.submitAsync("Thread.sleep(500);'test'");
            try {
                // this request should get blocked by the server
                client.submitAsync("'test-blocked'").join().one();
                fail("Request should fail because max connections are exceeded");
            }
            catch (Exception ex) {
                assertTrue(true);
                ex.printStackTrace();
            }


            assertEquals("test", result.get().one().getString());
        } catch (Exception re) {
            fail("Should not have an exception here");
        } finally {
            cluster.close();
        }
    }

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