Megatest

integrating and or running a complex suite of tests for release
qualification.</p></div>
</div>
</div>
<div class="sect1">
<h2 id="_megatest_design_philosophy">Megatest Design Philosophy</h2>
<div class="sectionbody">
<div class="paragraph"><p>Megatest is a distributed system intended to provide the minimum needed
resources to make writing a suite of tests and tasks for implementing
continuous build for software, design engineering or process control (via
owlfs for example) without being specialized for any specific problem
space. Megatest in of itself does not know what constitutes a PASS or FAIL
of a test or task. In most cases megatest is best used in conjunction with
logpro or a similar tool to parse, analyze and decide on the test outcome.</p></div>

<div class="ulist"><ul>
<li>
<p>
Self-checking -Repeatable strive for directed or self-checking test
   as opposed to delta based tests
</p>
</li>

<h3 id="_architecture_refactor">Architecture Refactor</h3>
<div class="sect3">
<h4 id="_goals">Goals</h4>
<div class="olist arabic"><ol class="arabic">
<li>
<p>
Reduce load on the file system. Sqlite3 files on network filesystem can be
  a burden. <span class="green">[DONE]</span>
</p>
</li>
<li>
<p>
Reduce number of servers and frequency of start/stop. This is mostly an
  issue of clutter but also a reduction in "moving parts". <span class="green">[DONE]</span>
</p>
</li>
<li>
<p>
Coalesce activities to a single home host where possible. Give the user
  feedback that they have started the dashboard on a host other than the
  home host. <span class="green">[DONE]</span>
</p>
</li>
<li>
<p>
Reduce number of processes involved in managing running tests.
</p>
</li>
</ol></div>
</div>
<div class="sect3">
<h4 id="_changes_needed">Changes Needed</h4>
<div class="olist arabic"><ol class="arabic">
<li>
<p>
ACID compliant db will be on /tmp and synced to megatest.db with a five
  second max delay. <span class="green">[DONE]</span>
</p>
</li>
<li>
<p>
Read/writes to db for processes on homehost will go direct to /tmp
  megatest.db file. <span class="green">[DONE]</span>
</p>
</li>
<li>
<p>
Read/wites fron non-homehost processes will go through one server. Bulk
  reads (e.g. for dashboard or list-runs) will be cached on the current host
  in /tmp and synced from the home megatest.db in the testsuite area. <span class="green">[DONE]</span>
</p>
</li>
<li>
<p>
Db syncs rely on the target db file timestame minus some margin. <span class="green">[DONE]</span>
</p>
</li>
<li>
<p>
Since bulk reads do not use the server we can switch to simple RPC for the
  network transport. <span class="green">[DONE]</span>
</p>
</li>
<li>
<p>
Test running manager process extended to manage multiple running tests.
</p>
</li>
</ol></div>
</div>
</div>
<div class="sect2">
<h3 id="_current_items">Current Items</h3>
<div class="sect3">
<h4 id="_ww05_migrate_to_inmem_db">ww05 - migrate to inmem-db</h4>
<div class="olist arabic"><ol class="arabic">
<li>
<p>
Switch to inmem db with fast sync to on disk db&#8217;s <span class="green">[DONE]</span>
</p>
</li>
<li>
<p>
Server polls tasks table for next action
</p>
<div class="olist loweralpha"><ol class="loweralpha">
<li>
<p>
Task table used for tracking runner process <span class="red">[Replaced by mtutil]</span>
</p>
</li>
<li>
<p>
Task table used for jobs to run <span class="red">[Replaced by mtutil]</span>
</p>
</li>
<li>
<p>
Task table used for queueing runner actions (remove runs,
   cleanRunExecute, etc)  <span class="red">[Replaced by mtutil</span>]
</p>
</li>
</ol></div>
</li>
</ol></div>
<div class="paragraph"><p>shifting, note that the preceding blank line is needed.</p></div>
</div>

<div class="listingblock">
<div class="content monospaced">
<pre>[items]
A a b c
B d e f</pre>
</div></div>
<div class="paragraph"><p>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).</p></div>
<div class="paragraph"><p>Wildcards and regexes in Targets</p></div>
<div class="listingblock">
<div class="content monospaced">
<pre>[a/2/b]
VAR1 VAL1

[a/%/b]
VAR1 VAL2</pre>
</div></div>
<div class="paragraph"><p>Will result in:</p></div>
<div class="listingblock">
<div class="content monospaced">
<pre>[a/2/b]
VAR1 VAL2</pre>
</div></div>
<div class="paragraph"><p>Can use either wildcard of "%" or a regular expression:</p></div>
<div class="listingblock">
<div class="content monospaced">
<pre>[/abc.*def/]</pre>
</div></div>
<div class="sect3">
<h4 id="_disk_space_checks">Disk Space Checks</h4>
<div class="paragraph"><p>Some parameters you can put in the [setup] section of megatest.config:</p></div>
<div class="listingblock">
<div class="content monospaced">
<pre># minimum space required in a run disk
minspace 10000000

<h5 id="_miscellaneous_setup_items">Miscellaneous Setup Items</h5>
<div class="paragraph"><p>Attempt to rerun tests in "STUCK/DEAD", "n/a", "ZERO_ITEMS" states.</p></div>
<div class="listingblock">
<div class="title">In megatest.config</div>
<div class="content monospaced">
<pre>[setup]
reruns 5</pre>
</div></div>
<div class="paragraph"><p>Replace the default blacklisted environment variables with user supplied
list.</p></div>
<div class="paragraph"><p>Default list: USER HOME DISPLAY LS_COLORS XKEYSYMDB EDITOR MAKEFLAGS MAKEF MAKEOVERRIDES</p></div>
<div class="paragraph"><div class="title">Add a "bad" variable "PROMPT" to the variables that will be commented out</div><p>in the megatest.sh and megatest.csh files:</p></div>
<div class="listingblock">
<div class="content monospaced">
<pre>[setup]
blacklistvars USER HOME DISPLAY LS_COLORS XKEYSYMDB EDITOR MAKEFLAGS PROMPT</pre>
</div></div>
</div>
<div class="sect4">
<h5 id="_run_time_limit">Run time limit</h5>
<div class="listingblock">
<div class="content monospaced">
<pre>[setup]

</div>
<div class="sect2">
<h3 id="_itemmap_handling">Itemmap Handling</h3>
<div class="paragraph"><p>For cases were the dependent test has a similar but not identical
itempath to the downstream test an itemmap can allow for itemmatch
mode</p></div>
<div class="listingblock">
<div class="title">example for removing part of itemmap for waiton test (eg: item <span class="monospaced">foo-x/bar</span> depends on waiton&#8217;s item <span class="monospaced">y/bar</span>)</div>
<div class="content monospaced">
<pre>[requirements]
mode itemwait
# itemmap &lt;item pattern for this test&gt;  &lt;item replacement pattern for waiton test&gt;
itemmap .*x/ y/</pre>
</div></div>
<div class="listingblock">
<div class="title">example for removing part of itemmap for waiton test (eg: item <span class="monospaced">foo/bar/baz</span> in this test depends on waiton&#8217;s item <span class="monospaced">baz</span>)</div>
<div class="content monospaced">
<pre># ## pattern replacement notes
#
# ## Example
# ## Remove everything up to the last /
[requirements]
mode itemwait
# itemmap &lt;item pattern for this test&gt; &lt;nothing here indicates removal&gt;
itemmap .*/</pre>

</div></div>
<div class="listingblock">
<div class="title">example replacing part of itemmap for (eg: item <span class="monospaced">foo/1234</span> will imply waiton&#8217;s item <span class="monospaced">bar/1234</span>)</div>
<div class="content monospaced">
<pre>#
# ## Example
# ## Replace foo/ with bar/
[requirements]
mode itemwait
# itemmap &lt;item pattern for this test&gt;  &lt;item replacement pattern for waiton test&gt;
itemmap foo/ bar/</pre>
</div></div>
<div class="listingblock">
<div class="title">example for backreference (eg: item <span class="monospaced">foo23/thud</span> will imply waiton&#8217;s item <span class="monospaced">num-23/bar/thud</span></div>
<div class="content monospaced">
<pre>#
# ## Example
# ## can use \{number} in replacement pattern to backreference a (capture) from matching pattern similar to sed or perl
[requirements]
mode itemwait
# itemmap &lt;item pattern for this test&gt;  &lt;item replacement pattern for waiton test&gt;
itemmap foo(\d+)/ num-\1/bar/</pre>
</div></div>
<div class="listingblock">
<div class="title">example multiple itemmaps</div>
<div class="content monospaced">
<pre># multi-line; matches are applied in the listed order
# The following would map:
#   a123b321 to b321fooa123 then to 321fooa123p
#
[requirements]
itemmap (a\d+)(b\d+) \2foo\1
  b(.*) \1p</pre>
</div></div>
<div class="sect3">
<h4 id="_complex_mapping">Complex mapping</h4>
<div class="paragraph"><p>Complex mappings can be handled with a separate [itemmap] section (instead if an itemmap line in the [requirements] section)</p></div>
<div class="paragraph"><p>Each line in an itemmap section starts with a waiton test name followed by an itemmap expression</p></div>
<div class="listingblock">
<div class="title">eg: The following causes waiton test A item <span class="monospaced">bar/1234</span> to run when our test&#8217;s <span class="monospaced">foo/1234</span> item is requested as well as causing waiton test B&#8217;s <span class="monospaced">blah</span> item to run when our test&#8217;s <span class="monospaced">stuff/blah</span> item is requested</div>
<div class="content monospaced">
<pre>[itemmap]
A foo/ bar/
B stuff/</pre>
</div></div>
</div>
<div class="sect3">
<h4 id="_complex_mapping_example">Complex mapping example</h4>
<div class="imageblock">
<div class="content">






<img src="complex-itemmap.png" alt="complex-itemmap.png">

</div>
















</div>
<div class="paragraph"><p>We accomplish this by configuring the testconfigs of our tests C D and E as follows:</p></div>
<div class="listingblock">
<div class="title">Testconfig for Test E has</div>
<div class="content monospaced">
<pre>[requirements]
waiton C

itemmap (\d+)/res \1/bb</pre>


</div></div>
<div class="listingblock">
<div class="title">Testconfig for Test D has</div>
<div class="content monospaced">
<pre>[requirements]
waiton C
itemmap (\d+)/res \1/aa</pre>
</div></div>
<div class="listingblock">
<div class="title">Testconfig for Test C has</div>
<div class="content monospaced">
<pre>[requirements]
waiton A B

[itemmap]
A (\d+)/aa aa/\1
B (\d+)/bb bb/\1</pre>
</div></div>
<div class="listingblock">
<div class="title">Testconfigs for Test B and Test A have no waiton or itemmap configured</div>
<div class="content monospaced">
<pre></pre>
</div></div>
<div class="olist arabic"><div class="title">Walk through one item&#8201;&#8212;&#8201;we want the following to happen for testpatt <span class="monospaced">D/1/res</span> (see blue boxes in complex itemmaping figure above):</div><ol class="arabic">
<li>
<p>
eg from command line <span class="monospaced">megatest -run -testpatt D/1/res -target mytarget -runname myrunname</span>
</p>
</li>
<li>
<p>
Full list to be run is now: <span class="monospaced">D/1/res</span>
</p>
</li>
<li>
<p>
Test D has a waiton - test C.  Test D&#8217;s itemmap rule <span class="monospaced">itemmap (\d&plus;)/res \1/aa</span> &#8594;  causes <span class="monospaced">C/1/aa</span> to run before <span class="monospaced">D/1/res</span>
</p>
</li>
<li>
<p>
Full list to be run is now: <span class="monospaced">D/1/res</span>, <span class="monospaced">C/1/aa</span>
</p>
</li>
<li>
<p>
Test C was a waiton - test A. Test C&#8217;s rule <span class="monospaced">A (\d&plus;)/aa aa/\1</span> &#8594; causes <span class="monospaced">A/aa/1</span> to run before <span class="monospaced">C/1/aa</span>
</p>
</li>
<li>
<p>
Full list to be run is now: <span class="monospaced">D/1/res</span>, <span class="monospaced">C/1/aa</span>, <span class="monospaced">A/aa/1</span>
</p>
</li>
<li>
<p>
Test A has no waitons.  All waitons of all tests in full list have been processed.  Full list is finalized.
</p>
</li>
</ol></div>
</div>
<div class="sect3">
<h4 id="_dynamic_flow_dependency_tree">Dynamic Flow Dependency Tree</h4>
<div class="listingblock">
<div class="title">Autogeneration waiton list for dynamic flow dependency trees</div>
<div class="content monospaced">
<pre>[requirements]

<div class="listingblock">
<div class="content monospaced">
<pre>$MT_MEGATEST -env2file .ezsteps/${stepname}</pre>
</div></div>
</div>
<div class="sect2">
<h3 id="_triggers">Triggers</h3>
<div class="paragraph"><p>In your testconfig or megatest.config triggers can be specified</p></div>
<div class="listingblock">
<div class="content monospaced">
<pre>[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</pre>
</div></div>
<div class="paragraph"><p>Scripts called will have; test-id test-rundir trigger test-name item-path state status event-time, added to the commandline.</p></div>
<div class="paragraph"><p>HINT</p></div>
<div class="paragraph"><p>To start an xterm (useful for debugging), use a command line like the following:</p></div>
<div class="listingblock">
<div class="content monospaced">
<pre>[triggers]
COMPLETED/ xterm -e bash -s --</pre>
</div></div>
<div class="admonitionblock">
<table><tr>
<td class="icon">
<img src="/nfs/pdx/disks/ice.disk.002/icfadm/pkgs/asciidoc/8.6.7/images/icons/note.png" alt="Note">
</td>
<td class="content">There is a trailing space after the --</td>
</tr></table>
</div>
<div class="paragraph"><p>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&#8217;t exist.</p></div>
<table class="tableblock frame-topbot grid-all"
style="
width:90%;
">
<caption class="title">Table 4. Environment variables visible to the trigger script</caption>
<col style="width:33%;">
<col style="width:66%;">
<thead>
<tr>
<th class="tableblock halign-center valign-top" >Variable             </th>
<th class="tableblock halign-left valign-top" > Purpose</th>
</tr>
</thead>
<tbody>
<tr>
<td class="tableblock halign-center valign-top" ><p class="tableblock">MT_TEST_RUN_DIR</p></td>
<td class="tableblock halign-left valign-top" ><p class="tableblock monospaced">The directory where Megatest ran this test</p></td>
</tr>
<tr>
<td class="tableblock halign-center valign-top" ><p class="tableblock">MT_CMDINFO</p></td>
<td class="tableblock halign-left valign-top" ><p class="tableblock monospaced">Encoded command data for the test</p></td>
</tr>
<tr>
<td class="tableblock halign-center valign-top" ><p class="tableblock">MT_DEBUG_MODE</p></td>
<td class="tableblock halign-left valign-top" ><p class="tableblock monospaced">Used to pass the debug mode to nested calls to Megatest</p></td>
</tr>
<tr>
<td class="tableblock halign-center valign-top" ><p class="tableblock">MT_RUN_AREA_HOME</p></td>
<td class="tableblock halign-left valign-top" ><p class="tableblock monospaced">Megatest home area</p></td>
</tr>
<tr>
<td class="tableblock halign-center valign-top" ><p class="tableblock">MT_TESTSUITENAME</p></td>
<td class="tableblock halign-left valign-top" ><p class="tableblock monospaced">The name of this testsuite or area</p></td>
</tr>
<tr>
<td class="tableblock halign-center valign-top" ><p class="tableblock">MT_TEST_NAME</p></td>
<td class="tableblock halign-left valign-top" ><p class="tableblock monospaced">The name of this test</p></td>
</tr>
<tr>
<td class="tableblock halign-center valign-top" ><p class="tableblock">MT_ITEM_INFO</p></td>
<td class="tableblock halign-left valign-top" ><p class="tableblock monospaced">The variable and values for the test item</p></td>
</tr>
<tr>
<td class="tableblock halign-center valign-top" ><p class="tableblock">MT_MEGATEST</p></td>
<td class="tableblock halign-left valign-top" ><p class="tableblock monospaced">Which Megatest binary is being used by this area</p></td>
</tr>
<tr>
<td class="tableblock halign-center valign-top" ><p class="tableblock">MT_TARGET</p></td>
<td class="tableblock halign-left valign-top" ><p class="tableblock monospaced">The target variable values, separated by <em>/</em></p></td>
</tr>
<tr>
<td class="tableblock halign-center valign-top" ><p class="tableblock">MT_LINKTREE</p></td>
<td class="tableblock halign-left valign-top" ><p class="tableblock monospaced">The base of the link tree where all run tests can be found</p></td>
</tr>
<tr>
<td class="tableblock halign-center valign-top" ><p class="tableblock">MT_ITEMPATH</p></td>
<td class="tableblock halign-left valign-top" ><p class="tableblock monospaced">The values of the item path variables, separated by <em>/</em></p></td>
</tr>
<tr>
<td class="tableblock halign-center valign-top" ><p class="tableblock">MT_RUNNAME</p></td>
<td class="tableblock halign-left valign-top" ><p class="tableblock monospaced">The name of the run</p></td>
</tr>
</tbody>
</table>
</div>
<div class="sect2">
<h3 id="_override_the_toplevel_html_file">Override the Toplevel HTML File</h3>
<div class="paragraph"><p>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.</p></div>
<div class="listingblock">

megatest -envdelta original-munged -dumpmode ini -o modified.config</pre>
</div></div>
<div class="paragraph"><p>Then in runconfigs.config</p></div>
<div class="listingblock">
<div class="title">Example of using modified.config in a testconfig</div>
<div class="content monospaced">
<pre>cat testconfig

[pre-launch-env-vars]
[include modified.config]</pre>
</div></div>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_managing_old_runs">Managing Old Runs</h2>
<div class="sectionbody">
<div class="paragraph"><p>It is often desired to keep some older runs around but this must be balanced with the costs of disk space.</p></div>
<div class="olist arabic"><ol class="arabic">
<li>
<p>
Use -remove-keep
</p>
</li>
<li>
<p>
Use -archive (can also be done from the -remove-keep interface)
</p>
</li>
<li>
<p>
use -remove-runs with -keep-records
</p>
</li>
</ol></div>
<div class="listingblock">
<div class="title">For each target, remove all runs but the most recent 3 if they are over 1 week old</div>
<div class="content monospaced">
<pre># use -precmd 'sleep 5;nbfake' to limit overloading the host computer but to allow the removes to run in parallel.
megatest -actions print,remove-runs -remove-keep 3 -target %/%/%/% -runname % -age 1w -precmd 'sleep 5;nbfake'"</pre>
</div></div>
</div>
</div>
<div class="sect1">
<h2 id="_nested_runs">Nested Runs</h2>
<div class="sectionbody">
<div class="paragraph"><p>A Megatest test can run a full Megatest run in either the same
Megatest area or in another area. This is a powerful way of chaining
complex suites of tests and or actions.</p></div>
<div class="paragraph"><p>If you are not using the current area you can use ezsteps to retrieve
and setup the sub-Megatest run area.</p></div>
<div class="paragraph"><p>In the testconfig:</p></div>
<div class="listingblock">
<div class="content monospaced">
<pre>[subrun]

# Required: wait for the run or just launch it
#           if no then the run will be an automatic PASS irrespective of the actual result
runwait yes|no

# Optional: where to execute the run. Default is the current runarea
runarea /some/path/to/megatest/area

# Optional: method to use to determine pass/fail status of the run
#   auto (default) - roll up the net state/status of the sub-run
#   logpro         - use the provided logpro rules, happens automatically if there is a logpro section
# passfail auto|logpro
# Example of logpro:
passfail logpro

# Optional:
logpro ;; if this section exists then logpro is used to determine pass/fail
  (expect:required in "LogFileBody" &gt;= 1 "At least one pass" #/PASS/)
  (expect:fail     in "LogFileBody"  = 0 "No FAILs allowed"  #/FAIL/)

# Optional: target translator, default is to use the parent target
target #{shell somescript.sh}

# Optional: runname translator/generator, default is to use the parent runname
runname #{somescript.sh}

# Optional: testpatt spec, default is to first look for TESTPATT spec from runconfigs unless there is a contour spec
testpatt %/item1,test2

# Optional: contour spec, use the named contour from the megatest.config contour spec
contour contourname ### NOTE: Not implemented yet! Let us know if you need this feature.

# Optional: mode-patt, use this spec for testpatt from runconfigs
mode-patt TESTPATT

# Optional: tag-expr, use this tag-expr to select tests
tag-expr quick

# Optional: (not yet implemented), propagate these actions from the parent
#           test
#   Note// default is % for all
propagate remove-runs archive ...</pre>
</div></div>
</div>
</div>
<div class="sect1">
<h2 id="_programming_api">Programming API</h2>
<div class="sectionbody">
<div class="paragraph"><p>These routines can be called from the megatest repl.</p></div>
<table class="tableblock frame-topbot grid-all"
style="
width:70%;
">
<caption class="title">Table 5. API Keys Related Calls</caption>
<col style="width:14%;">
<col style="width:28%;">
<col style="width:28%;">
<col style="width:28%;">
<thead>
<tr>
<th class="tableblock halign-center valign-top" >API Call                        </th>

</div>
</div>
</div>
<div id="footnotes"><hr></div>
<div id="footer">
<div id="footer-text">
Version 1.0<br>
Last updated 2017-07-17 14:05:11 PDT
</div>
</div>
</body>
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