repocompare/module_compare_html.sh

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#!/bin/bash
# Simple script that takes a list of the modular packages in a group of repositories (like AppStream,CodeReady from RHEL 8) and
# compares them with the modules in another distribution (Like AppStream,PowerTools from Rocky 8)
#
# It uses straight dnf calls for its data, and requires the repos to be defined in repos.d/. Also requires git
#
# All modules and version are iterated over and compared.
#
# Usage takes the pattern : ./module_compare_html.sh REPO_A,REPO_B,REPO_C REPO_X,REPO_Y,REPO_Z
#
# Example: ./modules_compare_html.sh RHEL8_AppStream,RHEL8_CodeReady Rocky8_AppStream,Rocky8_PowerTools
#
REPOS1=$1
REPOS2=$2
# Get a complete list of modules+versions we want to compare against (usually from RHEL 8)
# This includes a list that consists of things like "perl:5.24 , perl:5.26 , python38:3.8" , etc.
MODULE_LIST1=$(dnf --disablerepo '*' --enablerepo "${REPOS1}" module list |
grep -v '^Name' |
grep -v '(RPMs)' |
grep -v 'Hint:' |
grep -vi ' subscription ' |
grep -vi ' metadata ' |
grep -v '^$' |
awk '{print $1":"$2}')
IFS='
'
mkdir -p /tmp/module_compare
rm -f /tmp/module_compare/*
# HTML header:
echo "<html><h3>Module Artifact Comparison for: ${REPOS1} vs. ${REPOS2}</h3>"
echo '
<style>
table {
border-collapse: collapse;
width: 90%;
}
th, td {
text-align: left;
padding: 8px;
}
tr:nth-child(even) {background-color: #d4d4d4;}
</style>
<div style="overflow-x:auto;">
'
echo "
<p>
<i>Generated by Rocky Module Compare Script at: $(date +'%Y-%m-%d %H:%M:%S') </i>
<br />
<p>
<table>
<tr> <th width=\"20%\">Module Name:Version</th> <th width=\"40%\">${REPOS1} Pkg Diffs (-)</th> <th width=\"40%\">${REPOS2} Pkg Diffs (+)</th> </tr>
"
# Grab module info (artifacts, streams, versions) from all modules, in the source repo and target repo
MODULE1=$(dnf --disablerepo '*' --enablerepo "${REPOS1}" module info "*" 2> /dev/null)
MODULE2=$(dnf --disablerepo '*' --enablerepo "${REPOS2}" module info "*" 2> /dev/null)
# Big loop where we go through every possible module/version combination:
for module in ${MODULE_LIST1}; do
# isolate what stream ("version") of the module we want
mod_name=$(echo "${module}" | awk -F ':' '{print $1}')
mod_stream=$(echo "${module}" | awk -F ':' '{print $2}')
# Isolate the latest released version of each module, that's the only one we're intrested in (indicated by the "Version :" line in module info)
# Strategy:
# get the module name and 3 lines after,
# from that ensure the module stream is the one we want,
# from that isolate the "Version :" line,
# then isolate the version number only, sort, and grab the newest
latest_version1=$(echo "${MODULE1}" |
grep -A3 ": ${mod_name}$" |
grep -A2 ": ${mod_stream}" |
grep "^Version" |
awk '{print $3}' |
sort -n | tail -1)
latest_version2=$(echo "${MODULE2}" |
grep -A3 ": ${mod_name}$" |
grep -A2 ": ${mod_stream}" |
grep "^Version" |
awk '{print $3}' |
sort -n | tail -1)
# Isolate individual module artifacts and write them (sorted) to a text file
# order of operations:
# grep to find the module name, then grep to find the version, followed by 1000 lines of continued text
# sed to get this single module:stream:version, ending at the blank line (blank line separates all versions)
# awk to find "Requires :" line,
# sed to remove "Artifacts",
# awk to isolate module rpm artifact ($2),
# sed to remove the distro tag after module (module+el8.4.0+xyz)
# sed to remove the git hash after "module+" ONLY IF we have a minor patch release (ie. module ends in a ".1.x86_64" or a ".2.src" or something similar)
# sed to remove everything after .module in the normal case (no minor patch release at the end)
#everything after ".module" (which is unique per-distro), except for ending ".$arch" (src/noarch/x86_64/etc.)
# remove any blank lines,
# and finally sort and write to text file
echo "${MODULE1}" |
grep -A1000 ": ${mod_name}$" |
grep -A1000 "${latest_version1}" |
sed -n '0,/^$/p' |
awk "/Requires / { show=1; next } show; /^$/ { show=0 }" |
sed 's/Artifacts //' |
awk '{print $2}' |
sed 's/module+.*+/module+/g' |
sed 's/module+.*\.\(.*\)\./module.\1./g' |
sed 's/module+.*\./module./g' |
grep -v '^$' |
sort > "/tmp/module_compare/${module}_1"
# Do the same isolation of module rpms for module 2 and write that to a text file
echo "${MODULE2}" |
grep -A1000 ": ${mod_name}$" |
grep -A1000 "${latest_version2}" |
sed -n '0,/^$/p' |
awk "/Requires / { show=1; next } show; /^$/ { show=0 }" |
sed 's/Artifacts //' |
awk '{print $2}' |
sed 's/module+.*+/module+/g' |
sed 's/module+.*\.\(.*\)\./module.\1./g' |
sed 's/module+.*\./module./g' |
grep -v '^$' |
sort > "/tmp/module_compare/${module}_2"
# Get list of differences from source repo (the "-" in git diff)
diff1=$(git --no-pager diff "/tmp/module_compare/${module}_1" "/tmp/module_compare/${module}_2" | grep -A1000 '@@' | grep '^\-' | sort)
# and the "+" (repo2):
diff2=$(git --no-pager diff "/tmp/module_compare/${module}_1" "/tmp/module_compare/${module}_2" | grep -A1000 '@@' | grep '^\+' | sort)
# If module artifacts are completely identical, then we will say as much:
if [[ -z "${diff1}" ]] && [[ -z "${diff2}" ]]; then
diff1="Identical Packages"
diff2="Identical Packages"
fi
# If module 2 is empty, then it doesn't exist:
if [ -s "/tmp/module_compare/${module}_1" ] && [ ! -s "/tmp/module_compare/${module}_2" ]; then
diff1="N/A"
diff2="<b>Module packages not found</b>"
fi
# swap line endings for <br /> to make html friendly looking:
diff1=$(echo "${diff1}" | sed 's/$/<br \/>/')
diff2=$(echo "${diff2}" | sed 's/$/<br \/>/')
# Now, write the table row line:
echo "<tr> <td><b>${module}</b></td> <td>${diff1}</td> <td>${diff2}</td> </tr>"
done
echo "</table></html>"