com.tinkerpop.gremlin.server.op.standard.StandardOps Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of gremlin-server Show documentation

The newest version!

package com.tinkerpop.gremlin.server.op.standard;

import com.codahale.metrics.Timer;
import com.tinkerpop.gremlin.driver.Tokens;
import com.tinkerpop.gremlin.driver.message.RequestMessage;
import com.tinkerpop.gremlin.driver.message.ResponseMessage;
import com.tinkerpop.gremlin.driver.message.ResponseStatusCode;
import com.tinkerpop.gremlin.server.Context;
import com.tinkerpop.gremlin.server.GremlinServer;
import com.tinkerpop.gremlin.server.op.OpProcessorException;
import com.tinkerpop.gremlin.server.util.MetricManager;
import com.tinkerpop.gremlin.util.iterator.IteratorUtils;
import io.netty.channel.ChannelHandlerContext;
import org.javatuples.Pair;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.util.HashMap;
import java.util.Map;
import java.util.Optional;
import java.util.concurrent.CompletableFuture;

import static com.codahale.metrics.MetricRegistry.name;

/**
 * Operations to be used by the {@link StandardOpProcessor}.
 *
 * @author Stephen Mallette (http://stephen.genoprime.com)
 */
final class StandardOps {
    private static final Logger logger = LoggerFactory.getLogger(StandardOps.class);
    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 language = Optional.ofNullable((String) msg.getArgs().get(Tokens.ARGS_LANGUAGE));
        final Map bindings = Optional.ofNullable((Map) msg.getArgs().get(Tokens.ARGS_BINDINGS)).orElse(new HashMap<>());

        final CompletableFuture