#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <rados/librados.h>
#include <rbd/librbd.h>

int main(int argc, char** argv)
{
    rados_t cluster;
    char cluster_name[] = "ceph";
    char user_name[] = "client.admin";
    uint64_t flags = 0;
    int i=0;

    rados_ioctx_t io; 
    char *poolname = "rbd";

    int rt_num;
    rt_num = rados_create2(&cluster, cluster_name, user_name, flags);
    if(rt_num < 0){
        return -1; 
    }else{
        printf("\nCreated a cluster handle success. \n");
    }   
    
    rt_num = rados_conf_read_file(cluster, "/etc/ceph/ceph.conf");
    if(rt_num < 0){
        return -1;
    }else{
        printf("\nRead the config file. \n");
    }

    //Connect to the cluster
    rt_num = rados_connect(cluster);
    if(rt_num < 0){
        return -1;
    }else{
        printf("\nConnected to the cluster.\n");
    }

    //create io handle
    rt_num = rados_ioctx_create(cluster, poolname, &io);
    if(rt_num<0){
        rados_shutdown(cluster);
        return -1;
    }else{
        printf("\nCreated I/O context. \n");
    }

    const char* id = "638de1bd4de892";

    rbd_image_t image;
    rt_num = rbd_open_by_id( io, id, &image, NULL);
    if( rt_num ==0 ){
        printf("\nrbd_open success !!\n");
    }else{
        printf("\nrbd_open failed !!%s\n", strerror(-rt_num));
        rados_ioctx_destroy(io);
        rados_shutdown(cluster);
        return -1;
    }

    rt_num = rbd_close(image);
    if(rt_num == 0){
        printf("\nrbd_close success !!\n");
    }else{
        printf("\nrbd_close failed !!%s\n", strerror(-rt_num));
    }

    printf("\nClosing the connection\n");
    rados_ioctx_destroy(io);
    printf("\nShut down the handle\n");
    rados_shutdown(cluster);
    return 0;
}