/* gcc example-create-indexes.c -o example-create-indexes $(pkg-config --cflags


 * --libs libmongoc-1.0) */
/* ./example-create-indexes [CONNECTION_STRING [COLLECTION_NAME]] */
#include <mongoc/mongoc.h>
#include <stdio.h>
#include <stdlib.h>
int
main (int argc, char *argv[])
{


   mongoc_client_t *client;


   const char *uri_string =


      "mongodb://127.0.0.1/?appname=create-indexes-example";


   mongoc_uri_t *uri;


   mongoc_database_t *db;


   const char *collection_name = "test";


   bson_t keys;


   char *index_name;


   bson_t *create_indexes;


   bson_t reply;


   char *reply_str;


   bson_error_t error;


   bool r;


   mongoc_init ();


   if (argc > 1) {


      uri_string = argv[1];


   }


   if (argc > 2) {


      collection_name = argv[2];


   }


   uri = mongoc_uri_new_with_error (uri_string, &error);


   if (!uri) {


      fprintf (stderr,


               "failed to parse URI: %s\n"


               "error message:       %s\n",


               uri_string,


               error.message);


      return EXIT_FAILURE;


   }


   client = mongoc_client_new_from_uri (uri);


   if (!client) {


      return EXIT_FAILURE;


   }


   mongoc_client_set_error_api (client, 2);


   db = mongoc_client_get_database (client, "test");


   /* ascending index on field "x" */


   bson_init (&keys);


   BSON_APPEND_INT32 (&keys, "x", 1);


   index_name = mongoc_collection_keys_to_index_string (&keys);


   create_indexes = BCON_NEW ("createIndexes",


                              BCON_UTF8 (collection_name),


                              "indexes",


                              "[",


                              "{",


                              "key",


                              BCON_DOCUMENT (&keys),


                              "name",


                              BCON_UTF8 (index_name),


                              "}",


                              "]");


   r = mongoc_database_write_command_with_opts (


      db, create_indexes, NULL /* opts */, &reply, &error);


   reply_str = bson_as_json (&reply, NULL);


   printf ("%s\n", reply_str);


   if (!r) {


      fprintf (stderr, "Error in createIndexes: %s\n", error.message);


   }


   bson_free (index_name);


   bson_free (reply_str);


   bson_destroy (&reply);


   bson_destroy (create_indexes);


   mongoc_database_destroy (db);


   mongoc_uri_destroy (uri);


   mongoc_client_destroy (client);


   mongoc_cleanup ();


   return r ? EXIT_SUCCESS : EXIT_FAILURE;
}