SDAS Log and Exit Code Specification

Log

SDAS separates standard output (stdout) and error messages (stderr) to help users quickly locate problems.

• Standard output classification: Prints normal results, program running status (such as progress bars, success messages, etc.)

• Error message classification: Error messages, warnings, abnormal information

• Running example: example_bash_script > stdout.log 2> stderr.log &

  • stdout.log will contain normal output

  • stderr.log will contain error messages

Exit Code

The exit code is usually the status code returned by the program to the operating system at the end of execution, indicating whether the program ran successfully. Usually, a return value of 0 means the program exited normally, and a non-zero value means the program exited due to an error, which is convenient for subsequent status judgment in scripts (such as WDL, snakemake, etc.).

SDAS exit code definition is as follows:

• Normal exit: 0

• Core algorithm main function error: 1

• Command line parameter error: 2

• Input file format or content error: 3

• Output file error: 4