[SOLVED] Gremlin Console - Connecting to Amazon Neptune with Sig4 signing

Gremlin Console - Connecting to Amazon Neptune with Sig4 signing

I need to connect to Amazon Neptune using Gremlim console.
Tried all steps for setup and signing configuration but following error occurs when connecting to Neptune.

Steps performed:

Install JDK

sudo amazon-linux-extras install java-openjdk11

Install Gremlin Console

wget https://archive.apache.org/dist/tinkerpop/3.4.10/apache-tinkerpop-gremlin-console-3.4.10-bin.zip

unzip apache-tinkerpop-gremlin-console-3.4.10-bin.zip

cd apache-tinkerpop-gremlin-console-3.4.10

Install AWS signing library: amazon-neptune-gremlin-java-sigv4

bin\gremlin.sh

         \,,,/
         (o o)
-----oOOo-(3)-oOOo-----
plugin activated: tinkerpop.server
plugin activated: tinkerpop.utilities
plugin activated: tinkerpop.tinkergraph
gremlin> :install com.amazonaws amazon-neptune-sigv4-signer 2.4.0
log4j:WARN No appenders could be found for logger (org.apache.tinkerpop.gremlin.groovy.util.DependencyGrabber).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
==>Loaded: [com.amazonaws, amazon-neptune-sigv4-signer, 2.4.0]

Create configuration for Neptune connection: conf/neptune-remote.yaml

hosts: [your-neptune-endpoint]
port: 8182
connectionPool: {
    channelizer: org.apache.tinkerpop.gremlin.driver.SigV4WebSocketChannelizer,
    enableSsl: true
} 
serializer: { className: org.apache.tinkerpop.gremlin.driver.ser.GraphBinaryMessageSerializerV1,
          config: { serializeResultToString: true }}

Connect (fails)

gremlin> :remote connect tinkerpop.server conf/neptune-remote.yaml
==>Error during 'connect' - The channelizer specified [org.apache.tinkerpop.gremlin.driver.SigV4WebSocketChannelizer] could not be instantiated - it should be the fully qualified classname of a Channelizer implementation available on the classpath

How do I get this working? Do I need to set classpath?

Solution