echo.cc 2.8 KB

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980
  1. /* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
  2. *
  3. * Gearmand client and server library.
  4. *
  5. * Copyright (C) 2013 Data Differential, http://datadifferential.com/
  6. * All rights reserved.
  7. *
  8. * Redistribution and use in source and binary forms, with or without
  9. * modification, are permitted provided that the following conditions are
  10. * met:
  11. *
  12. * * Redistributions of source code must retain the above copyright
  13. * notice, this list of conditions and the following disclaimer.
  14. *
  15. * * Redistributions in binary form must reproduce the above
  16. * copyright notice, this list of conditions and the following disclaimer
  17. * in the documentation and/or other materials provided with the
  18. * distribution.
  19. *
  20. * * The names of its contributors may not be used to endorse or
  21. * promote products derived from this software without specific prior
  22. * written permission.
  23. *
  24. * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  25. * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  26. * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  27. * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  28. * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  29. * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  30. * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  31. * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  32. * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  33. * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  34. * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  35. *
  36. */
  37. #include "gear_config.h"
  38. #include <libgearman/common.h>
  39. #include "libgearman/vector.h"
  40. #include <cstdio>
  41. #include <cstring>
  42. namespace libgearman {
  43. namespace protocol {
  44. gearman_return_t echo(gearman_universal_st& universal,
  45. gearman_packet_st& message,
  46. const gearman_string_t &workload)
  47. {
  48. if (gearman_c_str(workload) == NULL)
  49. {
  50. return gearman_error(universal, GEARMAN_INVALID_ARGUMENT, "workload was NULL");
  51. }
  52. if (gearman_size(workload) == 0)
  53. {
  54. return gearman_error(universal, GEARMAN_INVALID_ARGUMENT, "workload_size was 0");
  55. }
  56. if (gearman_size(workload) > GEARMAN_MAX_ECHO_SIZE)
  57. {
  58. return gearman_error(universal, GEARMAN_ARGUMENT_TOO_LARGE, "workload_size was greater then GEARMAN_MAX_ECHO_SIZE");
  59. }
  60. const void *args[1];
  61. size_t args_size[1];
  62. args[0]= gearman_c_str(workload);
  63. args_size[0]= gearman_size(workload);
  64. return gearman_packet_create_args(universal, message, GEARMAN_MAGIC_REQUEST,
  65. GEARMAN_COMMAND_ECHO_REQ,
  66. args, args_size, 1);
  67. }
  68. } // namespace protocol
  69. } // namespace libgearman