<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:

def read_datasource(jboss_config, name, profile=None):
    '''
    Read datasource properties in the running jboss instance.

    jboss_config
        Configuration dictionary with properties specified above.
    name
        Datasource name
    profile
        Profile name (JBoss domain mode only)

    CLI Example:

    .. code-block:: bash

        salt '*' jboss7.read_datasource '{"cli_path": "integration.modules.sysmod.SysModuleTest.test_valid_docs", "controller": "10.11.12.13:9999", "cli_user": "jbossadm", "cli_password": "jbossadm"}'
       '''
    log.debug("======================== MODULE FUNCTION: jboss7.read_datasource, name=%s", name)
    return __read_datasource(jboss_config, name, profile)