1. <?php
  3. /**
  4. * Dataset Script Bootstrapper with Fallback Logic
  5. *
  6. * This script allows for the execution of dataset-specific scripts,
  7. * with fallback mechanisms in case of failures.
  8. */
  10. /**
  11. * Function to execute a dataset script.
  12. *
  13. * @param string $dataset_name The name of the dataset.
  14. * @param callable $script_function The function to execute for the dataset.
  15. * @param array $fallbacks An array of fallback functions to execute if the primary script fails.
  16. * @return bool True on success, false on failure.
  17. */
  18. function bootstrapDatasetScript(string $dataset_name, callable $script_function, array $fallbacks = []): bool
  19. {
  20. $script_result = null;
  22. try {
  23. // Attempt to execute the primary script
  24. $script_result = $script_function();
  25. if ($script_result === true) {
  26. return true; // Success
  27. }
  28. } catch (Exception $e) {
  29. // Log the error (replace with your logging mechanism)
  30. error_log("Error executing script for dataset '$dataset_name': " . $e->getMessage());
  32. // Attempt fallbacks
  33. foreach ($fallbacks as $fallback) {
  34. try {
  35. $fallback_result = $fallback();
  36. if ($fallback_result === true) {
  37. return true; // Success with fallback
  38. }
  39. } catch (Exception $e) {
  40. error_log("Fallback script failed: " . $e->getMessage());
  41. }
  42. }
  44. return false; // All scripts failed
  45. }
  47. return false; //Primary script failed, and no fallback succeeded.
  48. }
  51. // Example usage (replace with your actual dataset scripts)
  52. /**
  53. * Example script for dataset 'dataset_a'.
  54. * Replace this with your actual script logic.
  55. * @return bool True on success, false on failure.
  56. */
  57. function datasetA_script(): bool
  58. {
  59. // Simulate some work
  60. sleep(1);
  61. //Example logic
  62. return true;
  63. }
  65. /**
  66. * Example fallback script for dataset 'dataset_a'.
  67. * @return bool True on success, false on failure.
  68. */
  69. function datasetA_fallback(): bool
  70. {
  71. // Simulate a different, simpler approach
  72. sleep(0.5);
  73. //Example fallback logic
  74. return true;
  75. }
  78. // Example usage for a dataset
  79. $dataset_name = "dataset_a";
  80. $script_function = 'datasetA_script';
  81. $fallbacks = [$datasetA_fallback];
  83. if (bootstrapDatasetScript($dataset_name, $script_function, $fallbacks)) {
  84. echo "Dataset '$dataset_name' processed successfully.\n";
  85. } else {
  86. echo "Dataset '$dataset_name' processing failed.\n";
  87. }
  91. //Another Example
  92. $dataset_name = "dataset_b";
  93. $script_function = 'datasetB_script'; //replace with your script
  94. $fallbacks = [];
  96. if (bootstrapDatasetScript($dataset_name, $script_function, $fallbacks)) {
  97. echo "Dataset '$dataset_name' processed successfully.\n";
  98. } else {
  99. echo "Dataset '$dataset_name' processing failed.\n";
  100. }
  101. ?>

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