globus_ftp_client_restart_plugin.example

The following example illustrates a typical use of the restart plugin. In this case, we configure a plugin instance to restart the operation for up to an hour, using an exponential back-off between retries.

#include "globus_ftp_client.h"
#include "globus_ftp_client_restart_plugin.h"
#include "globus_time.h"

int
main(int argc, char *argv[])
{
    globus_ftp_client_plugin_t restart_plugin;
    globus_ftp_client_handleattr_t handleattr;
    globus_ftp_client_handle_t handle;
    globus_abstime_t deadline;

    globus_module_activate(GLOBUS_FTP_CLIENT_MODULE);
    globus_module_activate(GLOBUS_FTP_CLIENT_RESTART_PLUGIN_MODULE);

    /* Set a deadline to be now + 1 hour */
    GlobusAbstimeSet(deadline, 60 * 60, 0);

    /* initialize a plugin with this deadline */
    globus_ftp_client_restart_plugin_init(
        &restart_plugin,
        0,                        /* # retry limit (0 means don't limit) */
        GLOBUS_NULL,              /* interval between retries--null means
                                   * exponential backoff
                                   */
        &deadline);

    /* Set up our handle to use the new plugin */
    globus_ftp_client_handleattr_init(&handleattr);
    globus_ftp_client_handleattr_add_plugin(&handleattr, &restart_plugin);
    globus_ftp_client_handle_init(&handle, &handleattr);

    /*
     * Now, if a fault occurs processing this get, the plugin will restart
     * it with an exponential back-off, and will bail if a fault occurs
     * after 1 hour of retrying
     */
    globus_ftp_client_get(&handle,
                          "ftp://ftp.globus.org/pub/globus/README",
                          GLOBUS_NULL,
                          GLOBUS_NULL,
                          callback_fn,
                          GLOBUS_NULL);
}

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