No server chosen by com.mongodb.async.client.ClientSessionHelpe from cluster description ClusterDescription

Question

I am trying to connect to aws DocumentDB with async mongoClient.

I created a DocumentDB cluster in aws and success connect via ssh command line.

I went over here and created MongoClient and success connected and insert events.

But when I tried create com.mongodb.async.client.MongoClient, connection failed with folowing error:

No server chosen by WritableServerSelector from cluster description ClusterDescription{type=REPLICA_SET, connectionMode=MULTIPLE, serverDescriptions=[ServerDescription{address=aws-cluster:27017, type=UNKNOWN, state=CONNECTING, exception={com.mongodb.MongoSocketReadTimeoutException: Timeout while receiving message}, caused by {io.netty.handler.timeout.ReadTimeoutException}}]}. Waiting for 30000 ms before timing out.

    ClusterSettings clusterSettings = ClusterSettings.builder()
                .applyConnectionString(new ConnectionString(connectionString)).build();
        List<MongoCredential> credentials = new ArrayList<>();
        credentials.add(
                 MongoCredential.createCredential(
                         mongoUserName,
                         mongoDBName,
                         mongoPassword));

    MongoClientSettings settings = MongoClientSettings.builder()
            .credentialList(credentials)
            .clusterSettings(clusterSettings)
            .streamFactoryFactory(new NettyStreamFactoryFactory())
            .writeConcern(WriteConcern.ACKNOWLEDGED)
            .build();
    com.mongodb.async.client.MongoClient mongoClient = MongoClients.create(settings);



    MongoDatabase testDB = mongoClient.getDatabase("myDB");
    MongoCollection<Document> collection = testDB.getCollection("test");
    Document doc = new Document("name", "MongoDB").append("type", "database");

    //**trying insert document => here I got an error**
    collection.insertOne(doc, new SingleResultCallback<Void>() {
            @Override
            public void onResult(final Void result, final Throwable t) {
                System.out.println("Inserted!");
            }
        });

Do you have any ideas, why does it happen?

any solution for this ? – Shachaf.Gortler Jan 07 '20 at 18:38 — Shachaf.Gortler, Jan 07 '20 at 18:38

score 2 · Accepted Answer · answered Jan 21 '20 at 12:33

2

I solved it by using uri:

String uri = "mongodb://<username>:<Password>@<hostname>:27017/?ssl=true&ssl_ca_certs=cert";
MongoClientSettings settings = MongoClientSettings.builder()
                        .streamFactoryFactory(new NettyStreamFactoryFactory())
                        .applyConnectionString(new ConnectionString(uri))
                        .build();

com.mongodb.async.client.MongoClient mongoClient = MongoClients.create(settings);

answered Jan 21 '20 at 12:33

Maria Dorohin

355
4
17

'NettyStreamFactoryFactory' has private access – Zon Oct 06 '21 at 08:53
Instead of constructor - use 'NettyStreamFactoryFactory.builder().build()' – Zon Oct 06 '21 at 08:59

score 0 · Answer 2 · answered Jan 16 '20 at 18:26

0

I encountered a similar error , for me it was related to the TLS configs.

I disabled the TLS in documentDB https://docs.aws.amazon.com/documentdb/latest/developerguide/security.encryption.ssl.html

answered Jan 16 '20 at 18:26

Shachaf.Gortler

5,655
14
43
71

score 0 · Answer 3 · answered Feb 25 '22 at 13:40

0

In my case I had to restart the cluster after disabling the TLS. (TLS was not needed for the use case). After the restart the connection was established successfully.

answered Feb 25 '22 at 13:40

Claudiu Matei

4,091
3
19
33

No server chosen by com.mongodb.async.client.ClientSessionHelpe from cluster description ClusterDescription

3 Answers3