Get started with the Data API

token_provider = UsernamePasswordTokenProvider(DB_USERNAME, DB_PASSWORD)

# Initialize the client and get a "Database" object
database = DataAPIClient(
    token=token_provider, environment=Environment.HCD,
).get_database(DB_API_ENDPOINT)

from astrapy import DataAPIClient
from astrapy.authentication import UsernamePasswordTokenProvider
from astrapy.constants import Environment

# Database settings
DB_USERNAME = "cassandra"
DB_PASSWORD = "cassandra"
DB_API_ENDPOINT = "http://localhost:8181"

# Prepare a token provider
token_provider = UsernamePasswordTokenProvider(DB_USERNAME, DB_PASSWORD)

# Initialize the client and get a "Database" object
client = DataAPIClient(token=token_provider, environment=Environment.HCD)
database = client.get_database(DB_API_ENDPOINT)

// Build a token in the required format
const tokenProvider = new UsernamePasswordTokenProvider(DB_USERNAME, DB_PASSWORD);

// Initialize the client and get a "Db" object
const client = new DataAPIClient({ environment: 'hcd' });

import { DataAPIClient, UsernamePasswordTokenProvider, VectorDoc, UUID } from '@datastax/astra-db-ts';

// Database settings
// Database settings, assuming that you exported them as environment variables
const DB_USERNAME = process.env.DB_USERNAME;
const DB_PASSWORD = process.env.DB_PASSWORD;
const DB_API_ENDPOINT = process.env.DB_API_ENDPOINT;
const DB_ENVIRONMENT = process.env.DB_ENVIRONMENT;
const DB_NAMESPACE = process.env.DB_NAMESPACE;

// Build a token in the required format
const tokenProvider = new UsernamePasswordTokenProvider(DB_USERNAME, DB_PASSWORD);

// Initialize the client and get a "Db" object
const client = new DataAPIClient({ environment: 'hcd' });
const db = client.db(DB_API_ENDPOINT, { token: tp });
const dbAdmin = db.admin({ environment: 'hcd' });

// Build a token in the form of Cassandra:base64(username):base64(password)
String token = new UsernamePasswordTokenProvider(cassandraUserName, cassandraPassword).getTokenAsString();

// Initialize the client
DataAPIClient client = new DataAPIClient(token, builder().withDestination(databaseEnvironment).build());

import com.datastax.astra.client.Collection;
import com.datastax.astra.client.DataAPIClient;
import com.datastax.astra.client.Database;
import com.datastax.astra.client.admin.DataAPIDatabaseAdmin;
import com.datastax.astra.client.model.CollectionOptions;
import com.datastax.astra.client.model.CommandOptions;
import com.datastax.astra.client.model.Document;
import com.datastax.astra.client.model.FindOneOptions;
import com.datastax.astra.client.model.NamespaceOptions;
import com.datastax.astra.client.model.SimilarityMetric;
import com.datastax.astra.internal.auth.UsernamePasswordTokenProvider;

import java.util.Optional;

import static com.datastax.astra.client.DataAPIClients.DEFAULT_ENDPOINT_LOCAL;
import static com.datastax.astra.client.DataAPIOptions.DataAPIDestination.HCD;
import static com.datastax.astra.client.DataAPIOptions.builder;
import static com.datastax.astra.client.model.Filters.eq;

public class QuickStartHCD {

    public static void main(String[] args) {

        // Database Settings
        String cassandraUserName     = "cassandra";
        String cassandraPassword     = "cassandra";
        String dataApiUrl            = DEFAULT_ENDPOINT_LOCAL;  // http://localhost:8181
        String databaseEnvironment   = "HCD" // DSE, HCD, or ASTRA
        String keyspaceName          = "ks1";
        String collectionName        = "lyrics";

        // Database settings if you export them as environment variables
        // String cassandraUserName            = System.getenv("DB_USERNAME");
        // String cassandraPassword            = System.getenv("DB_PASSWORD");
        // String dataApiUrl                   = System.getenv("DB_API_ENDPOINT");
        
        // OpenAI Embeddings
        String openAiProvider        = "openai";
        String openAiKey             = System.getenv("OPENAI_API_KEY"); // Need to export OPENAI_API_KEY
        String openAiModel           = "text-embedding-3-small";
        int openAiEmbeddingDimension = 1536;

        // Build a token in the form of Cassandra:base64(username):base64(password)
        String token = new UsernamePasswordTokenProvider(cassandraUserName, cassandraPassword).getTokenAsString();
        System.out.println("1/7 - Creating Token: " + token);

        // Initialize the client
        DataAPIClient client = new DataAPIClient(token, builder().withDestination(databaseEnvironment).build());
        System.out.println("2/7 - Connected to Data API");