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#!/bin/bash -eu

# compare if version1 < version2

versionLT() {

local v1; v1=$(echo "$1" | cut -d '-' -f 1 )

local q1; q1=$(echo "$1" | cut -s -d '-' -f 2- )

local v2; v2=$(echo "$2" | cut -d '-' -f 1 )

local q2; q2=$(echo "$2" | cut -s -d '-' -f 2- )

if [ "$v1" = "$v2" ]; then

if [ "$q1" = "$q2" ]; then

return 1

else

if [ -z "$q1" ]; then

return 1

else

if [ -z "$q2" ]; then

return 0

else

[ "$q1" = "$(echo -e "$q1\n$q2" | sort -V | head -n1)" ]

fi

fi

fi

else

[ "$v1" = "$(echo -e "$v1\n$v2" | sort -V | head -n1)" ]

fi

}

# returns a plugin version from a plugin archive

get_plugin_version() {

local archive; archive=$1

local version; version=$(unzip -p "$archive" META-INF/MANIFEST.MF | grep "^Plugin-Version: " | sed -e 's#^Plugin-Version: ##')

version=${version%%[[:space:]]}

echo "$version"

}

# Copy files from /usr/share/jenkins/ref into $JENKINS_HOME

# So the initial JENKINS-HOME is set with expected content.

# Don't override, as this is just a reference setup, and use from UI

# can then change this, upgrade plugins, etc.

copy_reference_file() {

f="${1%/}"

b="${f%.override}"

rel="${b:23}"

version_marker="${rel}.version_from_image"

dir=$(dirname "${b}")

local action;

local reason;

local container_version;

local image_version;

local marker_version;

local log; log=false

if [[ ${rel} == plugins/*.jpi ]]; then

container_version=$(get_plugin_version "$JENKINS_HOME/${rel}")

image_version=$(get_plugin_version "${f}")

if [[ -e $JENKINS_HOME/${version_marker} ]]; then

marker_version=$(cat "$JENKINS_HOME/${version_marker}")

if versionLT "$marker_version" "$container_version"; then

action="SKIPPED"

reason="Installed version ($container_version) has been manually upgraded from initial version ($marker_version)"

log=true

else

if [[ "$image_version" == "$container_version" ]]; then

action="SKIPPED"

reason="Version from image is the same as the installed version $image_version"

else

if versionLT "$image_version" "$container_version"; then

action="SKIPPED"

log=true

reason="Image version ($image_version) is older than installed version ($container_version)"

else

action="UPGRADED"

log=true

reason="Image version ($image_version) is newer than installed version ($container_version)"

fi

fi

fi

else

if [[ -n "$TRY_UPGRADE_IF_NO_MARKER" ]]; then

if [[ "$image_version" == "$container_version" ]]; then

action="SKIPPED"

reason="Version from image is the same as the installed version $image_version (no marker found)"

# Add marker for next time

echo "$image_version" > "$JENKINS_HOME/${version_marker}"

else

if versionLT "$image_version" "$container_version"; then

action="SKIPPED"

log=true

reason="Image version ($image_version) is older than installed version ($container_version) (no marker found)"

else

action="UPGRADED"

log=true

reason="Image version ($image_version) is newer than installed version ($container_version) (no marker found)"

fi

fi

fi

fi

if [[ ! -e $JENKINS_HOME/${rel} || "$action" == "UPGRADED" || $f = *.override ]]; then

action=${action:-"INSTALLED"}

log=true

mkdir -p "$JENKINS_HOME/${dir:23}"

cp -r "${f}" "$JENKINS_HOME/${rel}";

# pin plugins on initial copy

touch "$JENKINS_HOME/${rel}.pinned"

echo "$image_version" > "$JENKINS_HOME/${version_marker}"

reason=${reason:-$image_version}

else

action=${action:-"SKIPPED"}

fi

else

if [[ ! -e $JENKINS_HOME/${rel} || $f = *.override ]]

then

action="INSTALLED"

log=true

mkdir -p "$JENKINS_HOME/${dir:23}"

cp -r "${f}" "$JENKINS_HOME/${rel}";

else

action="SKIPPED"

fi

fi

if [[ -n "$VERBOSE" || "$log" == "true" ]]; then

if [ -z "$reason" ]; then

echo "$action $rel" >> "$COPY_REFERENCE_FILE_LOG"

else

echo "$action $rel : $reason" >> "$COPY_REFERENCE_FILE_LOG"

fi

fi

}