public static async getQueryProvider(): Promise<sqlops.QueryProvider> {
		if (!AgentUtils._queryProvider) {
			let currentConnection = await sqlops.connection.getCurrentConnection();
			this._queryProvider = sqlops.dataprotocol.getProvider<sqlops.QueryProvider>(currentConnection.providerName, sqlops.DataProviderType.QueryProvider);
		}
		return this._queryProvider;
	}

	public static async getAgentService(): Promise<sqlops.AgentServicesProvider> {
		if (!AgentUtils._agentService) {
			let currentConnection = await sqlops.connection.getCurrentConnection();
			this._agentService = sqlops.dataprotocol.getProvider<sqlops.AgentServicesProvider>(currentConnection.providerName, sqlops.DataProviderType.AgentServicesProvider);
		}
		return AgentUtils._agentService;
	}

	public static async getDatabases(ownerUri: string): Promise<string[]> {
		if (!AgentUtils._connectionService) {
			let currentConnection = await sqlops.connection.getCurrentConnection();
			this._connectionService = sqlops.dataprotocol.getProvider<sqlops.ConnectionProvider>(currentConnection.providerName, sqlops.DataProviderType.ConnectionProvider);
		}
		return AgentUtils._connectionService.listDatabases(ownerUri).then(result => {
			if (result && result.databaseNames && result.databaseNames.length > 0) {
				return result.databaseNames;
			}
		});
	}

	/**
	 * Gets the connection string to send to the middleware
	 * @returns {Promise<string>}
	 */
	private async getConnectionString(): Promise<string> {
		let options = this.model.server.options;
		let connectionString: string;

		if (options.authenticationType === 'Integrated') {
			connectionString = `Data Source=${options.server + (options.port ? `,${options.port}` : '')};Initial Catalog=${this.model.database};Integrated Security=True`;
		} else {
			let credentials = await sqlops.connection.getCredentials(this.model.server.connectionId);
			connectionString = `Data Source=${options.server + (options.port ? `,${options.port}` : '')};Initial Catalog=${this.model.database};Integrated Security=False;User Id=${options.user};Password=${credentials.password}`;
		}

		// TODO: Fix this, it's returning undefined string.
		//await sqlops.connection.getConnectionString(this.model.server.connectionId, true);
		return connectionString;
	}

		vscode.commands.registerCommand('sqlservices.openConnectionDialog', async () => {
			let connection = await sqlops.connection.openConnectionDialog();
			if (connection) {
				console.info('Connection Opened: ' + connection.options['server']);
			}
		});