Package com.tinkerpop.gremlin.driver.message

Examples of com.tinkerpop.gremlin.driver.message.RequestMessage

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    private static final Timer evalOpTimer = MetricManager.INSTANCE.getTimer(name(GremlinServer.class, "op", "eval"));

    public static void evalOp(final Context context) throws OpProcessorException {
        final Timer.Context timerContext = evalOpTimer.time();
        final ChannelHandlerContext ctx = context.getChannelHandlerContext();
        final RequestMessage msg = context.getRequestMessage();

        final String script = (String) msg.getArgs().get(Tokens.ARGS_GREMLIN);
        final Optional<String> language = Optional.ofNullable((String) msg.getArgs().get(Tokens.ARGS_LANGUAGE));
        final Map<String, Object> bindings = Optional.ofNullable((Map<String, Object>) msg.getArgs().get(Tokens.ARGS_BINDINGS)).orElse(new HashMap<>());

        final CompletableFuture<Object> future = context.getGremlinExecutor().eval(script, language, bindings);
        future.handle((v, t) -> timerContext.stop());
        future.thenAccept(o -> ctx.write(Pair.with(msg, IteratorUtil.convertToIterator(o))));
        future.exceptionally(se -> {
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*/
class ControlOps {
    private static final Logger logger = LoggerFactory.getLogger(ControlOps.class);

    public static void versionOp(final Context context) {
        final RequestMessage msg = context.getRequestMessage();
        context.getChannelHandlerContext().writeAndFlush(ResponseMessage.build(msg).code(ResponseStatusCode.SUCCESS).result(Gremlin.version()));
    }
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    /**
     * Modify the imports on the {@code ScriptEngine}.
     */
    public static void importOp(final Context context) {
        final RequestMessage msg = context.getRequestMessage();
        final List<String> l = (List<String>) msg.getArgs().get(Tokens.ARGS_IMPORTS);
        context.getGremlinExecutor().getScriptEngines().addImports(new HashSet<>(l));
    }
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    /**
     * List the dependencies, imports, or variables in the {@code ScriptEngine}.
     */
    public static void showOp(final Context context) {
        final RequestMessage msg = context.getRequestMessage();
        final String infoType = msg.<String>optionalArgs(Tokens.ARGS_INFO_TYPE).get();
        final GremlinExecutor executor = context.getGremlinExecutor();
        final ScriptEngines scriptEngines = executor.getScriptEngines();

        final Object infoToShow;
        if (infoType.equals(Tokens.ARGS_INFO_TYPE_DEPDENENCIES))
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    /**
     * Resets the {@code ScriptEngine} thus forcing a reload of scripts and classes.
     */
    public static void resetOp(final Context context) {
        final RequestMessage msg = context.getRequestMessage();
        context.getGremlinExecutor().getScriptEngines().reset();
        context.getChannelHandlerContext().writeAndFlush(ResponseMessage.build(msg).code(ResponseStatusCode.SUCCESS).create());
    }
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    /**
     * Pull in maven based dependencies and load Gremlin plugins.
     */
    public static void useOp(final Context context) {
        final RequestMessage msg = context.getRequestMessage();
        final List<Map<String, String>> usings = (List<Map<String, String>>) msg.getArgs().get(Tokens.ARGS_COORDINATES);
        usings.forEach(c -> {
            final String group = c.get(Tokens.ARGS_COORDINATES_GROUP);
            final String artifact = c.get(Tokens.ARGS_COORDINATES_ARTIFACT);
            final String version = c.get(Tokens.ARGS_COORDINATES_VERSION);
            logger.info("Loading plugin [group={},artifact={},version={}]", group, artifact, version);
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        return OP_PROCESSOR_NAME;
    }

    @Override
    public ThrowingConsumer<Context> select(final Context ctx) throws OpProcessorException {
        final RequestMessage message = ctx.getRequestMessage();
        logger.debug("Selecting processor for RequestMessage {}", message);

        final ThrowingConsumer<Context> op;
        switch (message.getOp()) {
            case Tokens.OPS_VERSION:
                op = ControlOps::versionOp;
                break;
            case Tokens.OPS_IMPORT:
                op = validateImportMessage(message).orElse(ControlOps::importOp);
                break;
            case Tokens.OPS_RESET:
                op = ControlOps::resetOp;
                break;
            case Tokens.OPS_SHOW:
                op = validateShowMessage(message).orElse(ControlOps::showOp);
                break;
            case Tokens.OPS_USE:
                op = validateUseMessage(message).orElse(ControlOps::useOp);
                break;
            case Tokens.OPS_INVALID:
                final String msgInvalid = String.format("Message could not be parsed.  Check the format of the request. [%s]", message);
                throw new OpProcessorException(msgInvalid, ResponseMessage.build(message).code(ResponseStatusCode.REQUEST_ERROR_MALFORMED_REQUEST).result(msgInvalid).create());
            default:
                final String msgDefault = String.format("Message with op code [%s] is not recognized.", message.getOp());
                throw new OpProcessorException(msgDefault, ResponseMessage.build(message).code(ResponseStatusCode.REQUEST_ERROR_MALFORMED_REQUEST).result(msgDefault).create());
        }

        controlOpMeter.mark();
        return op;
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    }

    @Test
    public void shouldReturnInvalidRequestArgsWhenGremlinArgIsNotSupplied() throws Exception {
        try (SimpleClient client = new WebSocketClient()) {
            final RequestMessage request = RequestMessage.build(Tokens.OPS_EVAL).create();
            final CountDownLatch latch = new CountDownLatch(1);
            final AtomicBoolean pass = new AtomicBoolean(false);
            client.submit(request, result -> {
                if (result.getStatus().getCode() != ResponseStatusCode.SUCCESS_TERMINATOR) {
                    pass.set(ResponseStatusCode.REQUEST_ERROR_INVALID_REQUEST_ARGUMENTS == result.getStatus().getCode());
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    @Test
    public void shouldReturnInvalidRequestArgsWhenInvalidBindingKeyIsUsed() throws Exception {
        try (SimpleClient client = new WebSocketClient()) {
            final Map<String,Object> bindings = new HashMap<>();
            bindings.put(T.id.getAccessor(), "123");
            final RequestMessage request = RequestMessage.build(Tokens.OPS_EVAL)
                    .addArg(Tokens.ARGS_GREMLIN, "[1,2,3,4,5,6,7,8,9,0]")
                    .addArg(Tokens.ARGS_BINDINGS, bindings).create();
            final CountDownLatch latch = new CountDownLatch(1);
            final AtomicBoolean pass = new AtomicBoolean(false);
            client.submit(request, result -> {
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    }

    @Test
    public void shouldBatchResultsByTwos() throws Exception {
        try (SimpleClient client = new WebSocketClient()) {
            final RequestMessage request = RequestMessage.build(Tokens.OPS_EVAL)
                    .addArg(Tokens.ARGS_GREMLIN, "[1,2,3,4,5,6,7,8,9,0]").create();

            // set the latch to six as there should be six responses when you include the terminator
            final CountDownLatch latch = new CountDownLatch(6);
            client.submit(request, r -> latch.countDown());
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Related Classes of com.tinkerpop.gremlin.driver.message.RequestMessage

  • com.tinkerpop.gremlin.driver.handler.NioGremlinRequestEncoder
  • com.tinkerpop.gremlin.driver.RequestMessageTest
  • com.tinkerpop.gremlin.driver.ser.JsonMessageSerializerV1d0Test
  • com.tinkerpop.gremlin.server.GremlinServerIntegrateTest
  • com.tinkerpop.gremlin.server.handler.IteratorHandler
  • com.tinkerpop.gremlin.server.handler.OpExecutorHandler
  • com.tinkerpop.gremlin.server.op.AbstractEvalOpProcessor
  • com.tinkerpop.gremlin.server.op.control.ControlOpProcessor
  • com.tinkerpop.gremlin.server.op.control.ControlOps
  • com.tinkerpop.gremlin.server.op.session.SessionOps
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