Reference
---------
Config File Helpers
~~~~~~~~~~~~~~~~~~~
Various helpers for more advanced config files.
.Helpers
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|======================
|Helper | Purpose | Valid values | Comments
| #{scheme (scheme code...)} | Execute arbitrary scheme code | Any valid scheme | Value returned from the call is converted to a string and processed as part of the config file
| #{system command} | Execute program, inserts exit code | Any valid Unix command | Discards the output from the program
| #{shell command} or #{sh ...} | Execute program, inserts result from stdout | Any valid Unix command | Value returned from the call is converted to a string and processed as part of the config file
| #{realpath path} or #{rp ...} | Replace with normalized path | Must be a valid path |
| #{getenv VAR} or #{gv VAR} | Replace with content of env variable | Must be a valid var |
| #{get s v} or #{g s v} | Replace with variable v from section s | Variable must be defined before use |
| #{rget v} | Replace with variable v from target or default of runconfigs file | |
| #{mtrah} | Replace with the path to the megatest testsuite area | |
|======================
Config File Settings
~~~~~~~~~~~~~~~~~~~~
Settings in megatest.config
Config File Additional Features
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Including output from a script as if it was inline to the config file:
-------------------------
[scriptinc myscript.sh]
-------------------------
If the script outputs:
-------------------------
[items]
A a b c
B d e f
-------------------------
Then the config file would effectively appear to contain an items section
exactly like the output from the script. This is useful when dynamically
creating items, itemstables and other config structures. You can see the
expansion of the call by looking in the cached files (look in your linktree
for megatest.config and runconfigs.config cache files and in your test run
areas for the expanded and cached testconfig).
Wildcards and regexes in Targets
-------------------------
[a/2/b]
VAR1 VAL1
[a/%/b]
VAR1 VAL2
-------------------------
Will result in:
-------------------------
[a/2/b]
VAR1 VAL2
-------------------------
Can use either wildcard of "%" or a regular expression:
-------------------------
[/abc.*def/]
-------------------------
Disk Space Checks
^^^^^^^^^^^^^^^^^
Some parameters you can put in the [setup] section of megatest.config:
-------------------
# minimum space required in a run disk
minspace 10000000
# minimum space required in dbdir:
dbdir-space-required 100000
# script that takes path as parameter and returns number of bytes available:
free-space-script check-space.sh
-------------------
Trim trailing spaces
^^^^^^^^^^^^^^^^^^^^
------------------
[configf:settings trim-trailing-spaces yes]
------------------
Job Submission Control
^^^^^^^^^^^^^^^^^^^^^^
Submit jobs to Host Types based on Test Name
++++++++++++++++++++++++++++++++++++++++++++
.In megatest.config
------------------------
[host-types]
general nbfake
remote bsub
[launchers]
runfirst/sum% remote
% general
[jobtools]
launcher bsub
# if defined and not "no" flexi-launcher will bypass launcher unless
# there is no host-type match.
flexi-launcher yes
------------------------
host-types
++++++++++
List of host types and the commandline to run a job on that host type.
.host-type => launch command
------------
general nbfake
------------
launchers
+++++++++
.test/itempath => host-type
------------
runfirst/sum% remote
------------
Miscellaneous Setup Items
+++++++++++++++++++++++++
Attempt to rerun tests in "STUCK/DEAD", "n/a", "ZERO_ITEMS" states.
.In megatest.config
------------------
[setup]
reruns 5
------------------
Replace the default blacklisted environment variables with user supplied
list.
Default list: USER HOME DISPLAY LS_COLORS XKEYSYMDB EDITOR MAKEFLAGS MAKEF MAKEOVERRIDES
.Add a "bad" variable "PROMPT" to the variables that will be commented out
in the megatest.sh and megatest.csh files:
-----------------
[setup]
blacklistvars USER HOME DISPLAY LS_COLORS XKEYSYMDB EDITOR MAKEFLAGS PROMPT
-----------------
Run time limit
++++++++++++++
-----------------
[setup]
# this will automatically kill the test if it runs for more than 1h 2m and 3s
runtimelim 1h 2m 3s
-----------------
Tests browser view
~~~~~~~~~~~~~~~~~~
The tests browser (see the Run Control tab on the dashboard) has two views for displaying the tests.
. Dot (graphviz) based tree
. No dot, plain listing
The default is the graphviz based tree but if your tests don't view
well in that mode then use "nodot" to turn it off.
-----------------
[setup]
nodot
-----------------
Dashboard settings
~~~~~~~~~~~~~~~~~~
.Runs tab buttons, font and size
------------------
[dashboard]
btn-height x14
btn-fontsz 10
cell-width 60
------------------
Database settings
~~~~~~~~~~~~~~~~~
.Database config settings in [setup] section of megatest.config
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|======================
|Var | Purpose | Valid values | Comments
|delay-on-busy | Prevent concurrent access issues | yes\|no or not defined | Default=no, may help on some network file systems, may slow things down also.
|daemonize | Daemonize the server on start | yes\|no or not defined | Default=no
|faststart | All direct file access to sqlite db files | yes\|no or not defined | Default=yes, suggest no for central automated systems and yes for interactive use
|homehost | Start servers on this host | <hostname> | Defaults to local host
|hostname | Hostname to bind to | <hostname>\|- | On multi-homed hosts allows binding to specific hostname
|lowport | Start searching for a port at this portnum| 32768 |
|required | Server required | yes\|no or not defined | Default=no, force start of server always
|server-query-threshold | Start server when queries take longer than this | number in milliseconds | Default=300
|timeout | http api timeout | number in hours | Default is 1 minute, do not change
|======================
The testconfig File
-------------------
Setup section
~~~~~~~~~~~~~
Header
^^^^^^
-------------------
[setup]
-------------------
The runscript method is a brute force way to run scripts where the
user is responsible for setting STATE and STATUS
-------------------
runscript main.csh
-------------------
Requirements section
~~~~~~~~~~~~~~~~~~~~
.Header
-------------------
[requirements]
-------------------
Wait on Other Tests
^^^^^^^^^^^^^^^^^^^
-------------------
# A normal waiton waits for the prior tests to be COMPLETED
# and PASS, CHECK or WAIVED
waiton test1 test2
-------------------
Mode
^^^^
The default (i.e. if mode is not specified) is normal. All pre-dependent tests
must be COMPLETED and PASS, CHECK or WAIVED before the test will start
-------------------
[requirements]
mode normal
-------------------
The toplevel mode requires only that the prior tests are COMPLETED.
-------------------
[requirements]
mode toplevel
-------------------
A item based waiton will start items in a test when the same-named
item is COMPLETED and PASS, CHECK or WAIVED in the prior test. This
was historically called "itemwait" mode. The terms "itemwait" and
"itemmatch" are synonyms.
-------------------
[requirements]
mode itemmatch
-------------------
Overriding Enviroment Variables
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Override variables before starting the test. Can include files (perhaps generated by megatest -envdelta or similar).
--------------------
[pre-launch-env-vars]
VAR1 value1
# Get some generated settings
[include ../generated-vars.config]
# Use this trick to unset variables
#{scheme (unsetenv "FOOBAR")}
--------------------
Itemmap Handling
~~~~~~~~~~~~~~~~
For cases were the dependent test has a similar but not identical
itempath to the downstream test an itemmap can allow for itemmatch
mode
-------------------
[requirements]
mode itemmatch
itemmap .*x/ y/
# ## pattern replacement notes
#
# ## Example
# ## Remove everything up to the last /
itemmap .*/
#
# ## Example
# ## Replace foo/ with bar/
itemmap foo/ bar/
# multi-line; matches are applied in the listed order
# The following would map:
# a123b321 to b321fooa123 then to 321fooa123p
#
itemmap (a\d+)(b\d+) \2foo\1
b(.*) \1p
-------------------
Complex mappings
^^^^^^^^^^^^^^^^
Complex mappings can be handled with the [itemmap] section
// image::itemmap.png[]
image::complex-itemmap.png[]
Example:
. Request to run D/1/res
. Megatest uses rule "(\d+)/res" -> "\1/aa" to create item C/1/aa from D/1/res
. Full list to be run is now: D/1/res, C/1/aa
. Megatest uses rule "(\d+)/aa" -> "aa/\1" to create item A/aa/1
. Full list to be run is now: D/1/res, C/1/aa, A/aa/1
.Testconfig for Test C
----------------------
[requirements]
waiton A B
[itemmap]
A (\d+)/aa aa/\1
B (\d+)/bb
----------------------
.Testconfig for Test D
----------------------
[requirements]
waiton C
itemmap (\d+)/res \1/aa
----------------------
.Testconfig for Test E
----------------------
[requirements]
waiton C
itemmap (\d+)/res \1/bb
----------------------
Dynamic Flow Dependency Tree
^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.Autogeneration waiton list for dynamic flow dependency trees
-------------------
[requirements]
# With a toplevel test you may wish to generate your list
# of tests to run dynamically
#
waiton #{shell get-valid-tests-to-run.sh}
-------------------
Run time limit
^^^^^^^^^^^^^^
-----------------
[requirements]
runtimelim 1h 2m 3s # this will automatically kill the test if it runs for more than 1h 2m and 3s
-----------------
Skip
^^^^
A test with a skip section will conditional skip running.
.Skip section example
-----------------
[skip]
prevrunning x
# rundelay 30m 15s
-----------------
Skip on Still-running Tests
^^^^^^^^^^^^^^^^^^^^^^^^^^^
-----------------
# NB// If the prevrunning line exists with *any* value the test will
# automatically SKIP if the same-named test is currently RUNNING. The
# "x" can be any string. Comment out the prevrunning line to turn off
# skip.
[skip]
prevrunning x
-----------------
Skip if a File Exists
^^^^^^^^^^^^^^^^^^^^^
-----------------
[skip]
fileexists /path/to/a/file # skip if /path/to/a/file exists
-----------------
Skip if test ran more recently than specified time
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
.Skip if this test has been run in the past fifteen minutes and 15 seconds.
-----------------
[skip]
rundelay 15m 15s
-----------------
Disks
^^^^^
A disks section in testconfig will override the disks section in
megatest.config. This can be used to allocate disks on a per-test or per item
basis.
Controlled waiver propagation
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
If test is FAIL and previous test in run with same MT_TARGET is WAIVED then apply the following rules from the testconfig:
If a waiver check is specified in the testconfig apply the check and if it passes then set this FAIL to WAIVED
Waiver check has two parts, 1) a list of waiver, rulename, filepatterns and 2) the rulename script spec (note that "diff" and "logpro" are predefined)
-----------------
###### EXAMPLE FROM testconfig #########
# matching file(s) will be diff'd with previous run and logpro applied
# if PASS or WARN result from logpro then WAIVER state is set
#
[waivers]
# logpro_file rulename input_glob
waiver_1 logpro lookittmp.log
[waiver_rules]
# This builtin rule is the default if there is no <waivername>.logpro file
# diff diff %file1% %file2%
# This builtin rule is applied if a <waivername>.logpro file exists
# logpro diff %file1% %file2% | logpro %waivername%.logpro %waivername%.html
-----------------
Ezsteps
~~~~~~~
.Example ezsteps with logpro rules
-----------------
[ezsteps]
lookittmp ls /tmp
[logpro]
lookittmp ;; Note: config file format supports multi-line entries where leading whitespace is removed from each line
;; a blank line indicates the end of the block of text
(expect:required in "LogFileBody" > 0 "A file name that should never exist!" #/This is a awfully stupid file name that should never be found in the temp dir/)
-----------------
To transfer the environment to the next step you can do the following:
----------------------------
$MT_MEGATEST -env2file .ezsteps/${stepname}
----------------------------
Triggers
~~~~~~~~
In your testconfig or megatest.config triggers can be specified
-----------------
[triggers]
# Call script running.sh when test goes to state=RUNNING, status=PASS
RUNNING/PASS running.sh
# Call script running.sh any time state goes to RUNNING
RUNNING/ running.sh
# Call script onpass.sh any time status goes to PASS
PASS/ onpass.sh
-----------------
Scripts called will have; test-id test-rundir trigger test-name item-path state status event-time, added to the commandline.
HINT
To start an xterm (useful for debugging), use a command line like the following:
-----------------
[triggers]
COMPLETED/ xterm -e bash -s --
-----------------
NOTE: There is a trailing space after the --
There are a number of environment variables available to the trigger script
but since triggers can be called in various contexts not all variables are
available at all times. The trigger script should check for the variable and
fail gracefully if it doesn't exist.
.Environment variables visible to the trigger script
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|======================
|Variable | Purpose
| MT_TEST_RUN_DIR | The directory where Megatest ran this test
| MT_CMDINFO | Encoded command data for the test
| MT_DEBUG_MODE | Used to pass the debug mode to nested calls to Megatest
| MT_RUN_AREA_HOME | Megatest home area
| MT_TESTSUITENAME | The name of this testsuite or area
| MT_TEST_NAME | The name of this test
| MT_ITEM_INFO | The variable and values for the test item
| MT_MEGATEST | Which Megatest binary is being used by this area
| MT_TARGET | The target variable values, separated by '/'
| MT_LINKTREE | The base of the link tree where all run tests can be found
| MT_ITEMPATH | The values of the item path variables, separated by '/'
| MT_RUNNAME | The name of the run
|======================
Override the Toplevel HTML File
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Megatest generates a simple html file summary for top level tests of
iterated tests. The generation can be overridden. NOTE: the output of
the script is captured from stdout to create the html.
.For test "runfirst" override the toplevel generation with a script "mysummary.sh"
-----------------
# Override the rollup for specific tests
[testrollup]
runfirst mysummary.sh
-----------------
Archiving Setup
---------------
In megatest.config add the following sections:
.megatest.config
--------------
[archive]
# where to get bup executable
# bup /path/to/bup
[archive-disks]
# Archives will be organised under these paths like this:
# <testsuite>/<creationdate>
# Within the archive the data is structured like this:
# <target>/<runname>/<test>/
archive0 /mfs/myarchive-data/adisk1
--------------
Handling Environment Variables
------------------------------
It is often necessary to capture and or manipulate environment
variables. Megatest has some facilities built in to help.
Capture variables
~~~~~~~~~~~~~~~~~
.Commands
------------------------------
# capture the current enviroment into a db called envdat.db under
# the context "before"
megatest -envcap before
# capture the current environment into a db called startup.db with
# context "after"
megatest -envcap after startup.db
# write the diff from before to after
megatest -envdelta before-after -dumpmode bash
------------------------------
Dump modes include bash, csh and config. You can include config data
into megatest.config or runconfigs.config.
.Example of generating and using config data
------------------------------
megatest -envcap original
# do some stuff here
megatest -envcap munged
megatest -envdelta original-munged -dumpmode ini -o modified.config
------------------------------
Then in runconfigs.config
.Example of using modified.config in a testconfig
------------------------------
cat testconfig
[pre-launch-env-vars]
[include modified.config]
------------------------------
Programming API
---------------
These routines can be called from the megatest repl.
.API Keys Related Calls
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|======================
|API Call | Purpose comments | Returns | Comments
|(rmt:get-keys run-id) | | ( key1 key2 ... ) |
| (rmt:get-key-val-pairs run-id) | | #t=success/#f=fail | Works only if the server is still reachable
|======================
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