Migrate C++ driver

Complete the following procedure to migrate your existing DataStax C++ driver to a version that is capable of connecting to Astra databases created using DataStax Astra DB.

Prerequisites

Create a database using Astra DB.
Download the secure connect bundle to obtain connection credentials for your Astra DB database.
Get your Client ID and Client Secret by creating your application token for your username and password.

Alternatively, have a teammate provide access to their Astra database.
Download the DataStax C++ driver and dependency packages for your platform using the links in the following table:

DataStax C++ driver download links

Platform	Download links
CentOS 6	Driver \| Dependencies
CentOS 7	Driver \| Dependencies
CentOS 8	Driver \| Dependencies
Ubuntu 14.04	Driver \| Dependencies
Ubuntu 16.04	Driver \| Dependencies
Ubuntu 18.04	Driver \| Dependencies
Windows	Driver \| Dependencies

Platform

Download links

CentOS 6

Driver | Dependencies

CentOS 7

Driver | Dependencies

CentOS 8

Driver | Dependencies

Ubuntu 14.04

Driver | Dependencies

Ubuntu 16.04

Driver | Dependencies

Ubuntu 18.04

Driver | Dependencies

Windows

Driver | Dependencies

Other platforms should build the driver from the source code packages.

Using the packages you downloaded, follow the installation instructions for your platform to install the DataStax C++ driver.

Procedure

In your existing DataStax C++ driver code, modify the connection code to use the Astra DB API.

Both the DataStax C driver for Apache Cassandra and the {company} Enterprise (DSE) C driver use the same code to connect and query your Astra database. When using the DSE C++ driver, use the header #include <dse.h>.

The secure_connect_bundle must include the absolute path to your Astra database credentials (secure-connect-**database_name**.zip).

cass_cluster_set_credentials(cluster, "clientId", "clientSecret");

  CassFuture* connect_future = cass_session_connect(session, cluster);
  if (cass_future_error_code(connect_future) == CASS_OK) {
    * Use the session to run queries _
    }
  else {
    _ Handle error *
  }

Build and link your application against the DataStax C++ driver.
- Linux or macOS
  
  For static linking, use cassandra_static.a or dse_static.a.
  DataStax C++ driver for Apache Cassandra
  
  DSE C++ driver
  
  cc connect-database.c -I/path/to/cassandra.h -L/path/to/cassandra.so -lcassandra
  
  cc connect-database.c -I/path/to/dse.h -L/path/to/dse.so -ldse
- Windows Include these libraries in your Microsoft Visual Studio project by adding them to the project’s properties under ]Configuration Properties/Linker/Input/Additional Dependencies.
  
  For static linking, use cassandra_static.lib or dse_static.libpass:c[.

DataStax C++ driver for Apache Cassandra Link your application against cassandra.lib. Your application will also require `cassandra.dll to be in your runtime path.

DSE C++ driver Link your application against dse.lib. Your application will also require dse.dll to be in your runtime path.