Connect to OrientDB with the Gremlin javascript driver - orientdb

Question

I'm struggling to find an example using the current gremlin javascript driver with OrientDB. I can't get it to connect to OrientDB (already using the tinkerpop enabled version).
My sample code looks like this:
const gremlin = require("gremlin")
const DriverRemoteConnection = gremlin.driver.DriverRemoteConnection
const graph = new gremlin.structure.Graph()
const g = graph.traversal().withRemote(new DriverRemoteConnection('ws://localhost:8182/demodb'))
g.V().toList().then(function(data) {
console.log(data)
}).catch(function(err) {
console.log(err)
})
Does someone have any experience using those together? Thanks

Answer 1

If you want to connect OrientDB trough Gremlin try this:
Local -> gremlin> g = new OrientGraph("plocal:db_path/nomeDB")
In-Memory -> gremlin> g = new OrientGraph("memory:nomeDB")
Remote -> gremlin> g = new OrientGraph("remote:localhost/nomeDB")
Hope it helps
Regards

Answer 2

I dug a little bit. Gremlin Javascript driver does not support GraphSON3
https://github.com/jbmusso/gremlin-javascript/issues/109
Add this to your server.yaml serializer configuration in order to add support for v2
- { className: org.apache.tinkerpop.gremlin.driver.ser.GraphSONMessageSerializerGremlinV2d0, config: { ioRegistries: [org.apache.tinkerpop.gremlin.orientdb.io.OrientIoRegistry] }}
Then it should work

Answer 3

Try this:
import * as gremlin from 'gremlin';
const DriverRemoteConnection = gremlin.driver.DriverRemoteConnection;
const authenticator = new gremlin.driver.auth.PlainTextSaslAuthenticator(<db username>, <db password>);
const traversal = gremlin.process.AnonymousTraversalSource.traversal;
const g = traversal().withRemote(new DriverRemoteConnection('ws://localhost:8182/gremlin', {
authenticator: authenticator
}));
Notice the /gremlin in the url, not /demodb.
To point to demodb or another database modify the demodb.properties file in the config folder from OrientDB.
If you want you can create another properties file, just remember to point to it in the gremlin-server.yaml file.