Taurus > User Manual > ShellExec
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Automation-friendly framework for Continuous Testing



ShellExec Service

This service module is used to call arbitrary commands during test execution stages.

Sample configuration:

services:
- module: shellexec
  prepare:  
  - mkdir /tmp/test
  startup:
  - echo 1 > /tmp/test
  - echo 2 > /tmp/test
  shutdown:
  - cat /tmp/test2 
  post-process:
  - rm /tmp/test1
  - rm /tmp/test2
execution:
- scenario: tg1
  hold-for: 10s
scenarios:
  tg1:
    requests:
    - label: HTTP Request
      method: GET
      url: http://127.0.0.1/

Extended task configuration sample:

services:
- module: shellexec
  prepare: # stage names: [prepare, startup, check]
  - command: echo 1 > /tmp/1.txt && sleep 1 && dmesg | grep pci  # task command
    background: true  # wait for task completion or send it to background, false by default. 
    ignore-failure: true  # false by default, otherwise will shut tests down if command return code != 0, 
    out: taskout.txt  # set file name for task stdout, null to print to stdout
    err: taskerr.txt  # set file name for task stderr, null to print to stdout
    run-at: local  # provisioning level to limit command usage, null to run always
    cwd: artifacts-dir  # option to change working dir for command, null to not change it
                        # special value 'artifacts-dir' will change to taurus artifacts dir
    env:  # environment variables to set for command
      VAR1: val1
      VAR2: val2

See Services page for explanation of run-at option.

Minimum task configuration sample:

services:
- module: shellexec
  prepare: ls -la
  startup:
  - pwd
  - echo something

Notes:

  • Non-background tasks are not allowed on startup stage.
  • Background tasks will be shut down forcefully on mirror stages (see Lifecycle) if they were not finished yet.
  • Background tasks on Check stage will not start until same previous task completed.
  • Special environment variable TAURUS_ARTIFACTS_DIR is set for every command, containing path to current artifacts directory
  • Special environment variables TAURUS_EXIT_CODE and TAURUS_STOPPING_REASON is set for every command after

Taurus begins shutdown, containing exit code and possible failure explanation

Module Settings

Some 'global' settings can be specified in the modules block as usual. There are default-cwd for shellexec module that allows to change cwd default value for all tasks and env which contains dictionary for additional environment variables for commands

modules:
  shellexec:
    default-cwd: /tmp
    env:
      VARNAME: value
      VARNAME2: value2