run_sample arguments

in spanner/spanner_samples.rb [2697:2748]

• 50 lines of code
• 8 McCabe index (conditional complexity)

def run_sample arguments
  command     = arguments.shift
  instance_id = arguments.shift
  database_id = arguments.shift
  project_id  = ENV["GOOGLE_CLOUD_PROJECT"]

  commands = [
    "create_instance", "create_instance_with_processing_units", "create_database", "create_table_with_timestamp_column",
    "create_database_with_version_retention_period", "insert_data", "insert_data_with_timestamp_column", "query_data",
    "query_data_with_timestamp_column", "read_data", "delete_data", "read_stale_data",
    "create_index", "create_storing_index", "add_column", "add_timestamp_column",
    "add_numeric_column", "update_data", "query_data_with_new_column",
    "update_data_with_timestamp_column", "read_write_transaction",
    "query_data_with_index", "read_data_with_index",
    "read_data_with_storing_index", "read_only_transaction",
    "spanner_batch_client", "write_struct_data", "query_with_struct",
    "query_with_array_of_struct", "query_struct_field", "query_nested_struct_field",
    "insert_using_dml", "update_using_dml", "delete_using_dml",
    "update_using_dml_with_timestamp", "write_and_read_using_dml",
    "update_using_dml_with_struct", "write_using_dml", "query_with_parameter",
    "write_with_transaction_using_dml", "update_using_partitioned_dml",
    "delete_using_partitioned_dml", "update_using_batch_dml",
    "create_table_with_datatypes", "write_datatypes_data",
    "query_with_array", "query_with_bool", "query_with_bytes", "query_with_date",
    "query_with_float", "query_with_int", "query_with_string",
    "query_with_timestamp", "query_with_query_options",
    "create_client_with_query_options", "write_read_bool_array",
    "write_read_empty_int64_array", "write_read_null_int64_array",
    "write_read_int64_array", "write_read_empty_float64_array",
    "write_read_null_float64_array", "write_read_float64_array",
    "create_backup", "restore_backup", "create_backup_cancel",
    "list_backup_operations", "list_database_operations", "list_backups",
    "delete_backup", "update_backup_expiration_time", "copy_backup",
    "set_custom_timeout_and_retry", "query_with_numeric_parameter",
    "update_data_with_numeric_column", "commit_stats", "create_database_with_encryption_key",
    "create_backup_with_encryption_key", "restore_database_with_encryption_key", "update_backup"
  ]
  if command.eql?("query_data_with_index") && instance_id && database_id && arguments.size >= 2
    query_data_with_index project_id:  project_id,
                          instance_id: instance_id,
                          database_id: database_id,
                          start_title: arguments.shift,
                          end_title:   arguments.shift
  elsif commands.include?(command) && instance_id && database_id
    send command, project_id:  project_id,
                  instance_id: instance_id,
                  database_id: database_id
  else
    usage
  end
end