repocompare/repo_compare_html.sh

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#!/bin/bash
# Script takes 2 arguments: SOURCEREPO and TARGETREPO (ex: ./repo_compare_html.sh RHEL8_BaseOS Rocky8_BaseOS )
# The arguments must be named dnf/yum repos on the system
#
# We will loop through the RPM names from SOURCEREPO, and attempt to find name/version/release matches in TARGETREPO
# An HTML table page will be sent to stdout showing the differences
#
REPO1="$1"
REPO2="$2"
pkglist1=$(dnf repoquery --latest-limit 1 --repo "${REPO1}" --queryformat "%{name} %{version} %{release}" | grep -vi " subscription ")
pkglist2=$(dnf repoquery --latest-limit 1 --repo "${REPO2}" --queryformat "%{name} %{version} %{release}" | grep -vi " subscription ")
# Strip some ending package info off like this:
# 1: moduleXYZ info comes off
# 2: If a dotrelease tag is present (like .el8_4.3), then preserve the .3 but remove the el8_* tag
# 3: If a dotrelease tag is not present, then simply take the .el8* off from the end
# 4: Remove any trailing ".rocky" tag as well from the end if a dotrelease is not present
# The moduleXYZ will never match versions, and the el8 tagging may be different (el8 vs. el8_3, el8_4, etc.)
pkglist1=$(echo "${pkglist1}" | sed -e 's/\.module.*$/\.module/g' | sed -e 's/\.el.*\.\(.*\)$/\.\1/g' | sed -e 's/\.el.*$//g' | sed 's/\.rocky$//')
pkglist2=$(echo "${pkglist2}" | sed -e 's/\.module.*$/\.module/g' | sed -e 's/\.el.*\.\(.*\)$/\.\1/g' | sed -e 's/\.el.*$//g' | sed 's/\.rocky$//')
# Turn the first pkg list into a comma-separated list (instead of newline-separated)
# (makes it easier to use IFS=',' in all of our for loops)
pkglist1=$(echo "${pkglist1}" | tr '\n' ',')
#echo "$pkglist1" > debug1.txt
#echo "$pkglist2" > debug2.txt
# HTML style header for table:
echo "<html><h3>Repo Version Differences for: ${REPO1} vs. ${REPO2}</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 "
<i>Generated by Repo Compare Script at: $(date +'%Y-%m-%d %H:%M:%S') </i>
<br />
<table>
<tr><th>${REPO1} Version</th> <th>${REPO2} Version</th></tr>
"
IFS=','
# Main loop to check all packages from our "source" repo
for pkg in ${pkglist1}; do
# Extract name/version/tag info from package (filtering out modular + el8* info from tag)
_name=$(echo "$pkg" | awk '{print $1}')
_version=$(echo "$pkg" | awk '{print $2}')
_tag=$(echo "$pkg" | awk '{print $3}')
# every package match is false by default, until we match it
isPkgMatched=0
# Find any packages in the target repo with the same name as the one we're interested in from the source repo:
# (easy to match the exact name if we include a space separator in our grep)
# (We turn it into a comma separated list as well so we can do another for loop against the result set)
pkgmatches=$(echo "${pkglist2}" | grep "^${_name} ")
# If there are no matches, we output a DOES NOT EXIST and don't bother with searching the results
if [[ -z "${pkgmatches}" ]]; then
echo "<tr> <td>${_name}-${_version}-${_tag}</td> <td>(DOES NOT EXIST)</td> </tr>"
continue
fi
# Loop through each result (name matches) and look for an exact version match:
for match in ${pkgmatches}; do
_name2=$(echo "$match" | awk '{print $1}')
_version2=$(echo "$match" | awk '{print $2}')
_tag2=$(echo "$match" | awk '{print $3}')
#echo "DEBUG :: _tag2 == $_tag2"
# If we find a match, then exit this loop and set the flag to found:
if [ "${_name}-${_version}-${_tag}" == "${_name2}-${_version2}-${_tag2}" ]; then
isPkgMatched=1
break
fi
done
# Get pkgmatches into name-version-release format:
pkgmatches=$(echo "${pkgmatches}" | sed 's/ /\-/g' | sed 's/,$//')
# If package is not matched, then we need to output an HTML row:
if [ "$isPkgMatched" == "0" ]; then
echo "<tr> <td>${_name}-${_version}-${_tag}</td> <td>${pkgmatches}</td> </tr>"
fi
done
echo "</table></html>"