Megatest

</div>
</div>
<div class="sect1">
<h2 id="_road_map">Road Map</h2>
<div class="sectionbody">
<div class="paragraph"><p>Note 1: This road-map is still evolving and subject to change without notice.</p></div>
<div class="sect2">
<h3 id="_rfc_move_data_into_completed_runs_db">RFC: Move data into completed-runs.db</h3>
<div class="paragraph"><p><strong>Purpose</strong>: shrink megatest.db data to enable lower load and higher performance.</p></div>
<div class="paragraph"><p><strong>Method</strong>: add a completed-runs.db and automatically move runs data from megatest.db to that db</p></div>
<div class="paragraph"><p><strong>Design</strong>:</p></div>
<div class="olist arabic"><ol class="arabic">
<li>
<p>
completed-runs.db is a full megatest database with complete schema
</p>
</li>
<li>
<p>
the data move would involve these steps
</p>
<div class="olist loweralpha"><ol class="loweralpha">
<li>
<p>
copy the run data to completed-runs.db
</p>
</li>
<li>
<p>
remove the run data, first from /tmp/…/megatest.db and /tmp/…/megatest_ref.db, followed by megatest.db
</p>
</li>
</ol></div>
</li>
<li>
<p>
accessing the data would be unchanged for most operations.
</p>
</li>
<li>
<p>
a mode -full-db will be added which when specified would attach the completed-runs.db to megatest.db before doing the query
</p>
</li>
<li>
<p>
mechanisms for moving runs to/from the megatest.db would be added
</p>
<div class="olist loweralpha"><ol class="loweralpha">
<li>
<p>
-reduce-records &#8658; move runs to completed-runs.db
</p>
</li>
<li>
<p>
-restore-records &#8658; move runs from completed-runs.db to megatest.db
</p>
</li>
</ol></div>
</li>
</ol></div>
<div class="paragraph"><p><strong>Branch</strong>: This work is taking place on branch v1.65-reduce-records</p></div>
</div>
<div class="sect2">
<h3 id="_rfc_automatic_homehost_migrations">RFC: Automatic homehost migrations</h3>
<div class="paragraph"><p><strong>Purpose</strong>: Automatically migrate homehost.</p></div>
<div class="paragraph"><p><strong>Method</strong>: Check that there are no tests running, launched or remotehoststart in past ½ hour then if not on homehost migrate the db to current host</p></div>
<div class="paragraph"><p><strong>Design</strong>:</p></div>
<div class="olist arabic"><ol class="arabic">
<li>
<p>
Check that the system is quiescent, i.e. that there are no runs in flight or recently run
</p>
</li>
<li>
<p>
Create a lock
</p>
</li>
<li>
<p>
Migrate the /tmp cache db to the current host
</p>
</li>
<li>
<p>
Update the .homehost file
</p>
</li>
<li>
<p>
Remove the lock
</p>
</li>
</ol></div>
<div class="paragraph"><p><strong>Branch</strong>: This work not yet started</p></div>
</div>
<div class="sect2">
<h3 id="_architecture_refactor">Architecture Refactor</h3>
<div class="sect3">
<h4 id="_goals">Goals</h4>
<div class="olist arabic"><ol class="arabic">
<li>

#!/bin/bash

wikiname=$1
FOSSILBIN=fossil

if [ x"$wikiname" == "x" ];then
  echo "Usage: viwiki wikipagename"
  exit
fi

$FOSSILBIN sync

# wikitmpfile=`mktemp /tmp/${USER}_wikiedit.XXXXXXX`
wikitmpfile=${wikiname}.in

if ! $FOSSILBIN wiki export "$wikiname" 2> /dev/null  1> $wikitmpfile ;then
    cat /dev/null > $wikitmpfile
    wikipagestate='new'
else
    wikipagestate='existing'
fi

# make a backup copy of the extracted file to diff detect if changed
cp $wikitmpfile ${wikitmpfile}.orig

if [[ x"$EDITOR" == "x" ]];then #  || [[ x"$VISUAL" == "x" ]];then
    EDITOR="gvim -f"
fi

echo $EDITOR | grep -q -e gvim
isGvim=$?

echo $EDITOR | grep -q -e 'gvim.*-f'
hasF=$?

if [[ $isGvim == 0 && $hasF != 0 ]]; then
	EDITOR="$EDITOR -f"
fi

$EDITOR $wikitmpfile

if ! diff -q $wikitmpfile ${wikitmpfile}.orig;then
    echo "Saving changes to $wikitmpfile to wiki"
    if [ $wikipagestate == 'new' ];then
        $FOSSILBIN wiki create "$wikiname" $wikitmpfile
    else
        $FOSSILBIN wiki commit "$wikiname" $wikitmpfile
    fi
else
    echo "Not saving, no changes to $wikitmpfile."
fi

$FOSSILBIN sync

# NOTE// We *keep* the wikitmpfile but remove the orig copy
rm -f ${wikitmpfile}.orig