Deployit: Patch an existing file during a deployment

patch.sh

echo "patching ${deployed.configurationFile}"

touch snippet.conf
echo "${deployed.comment} ${deployed.beginMarkup}" >> snippet.conf

echo "aValue ${deployed.avalue}" >> snippet.conf
echo "anotherValue ${deployed.anotherValue}" >> snippet.conf

echo "${deployed.comment} ${deployed.endMarkup}" >> snippet.conf

cat snippet.conf

cat snippet.conf >>  ${deployed.configurationFile}

synthetic.xml

	<type type="filex.PatchedFile" extends="generic.ExecutedScript" 
		deployable-type="filex.Resource" container-type="overthere.Host">
		<generate-deployable type="filex.Resource" extends="generic.Resource"/>

		<property name="avalue" />
		<property name="anotherValue" />

		<property name="home" default="/tmp"/>
		<property name="configurationFile" default="${deployed.home}/config.conf"/>

		<property name="comment" hidden="true" default="#"/>
		<property name="beginMarkup" hidden="true" default="patched by deployit"/>
		<property name="endMarkup" hidden="true" default="/patched by deployit"/>

		<property name="createScript" hidden="true" default="filex/patch"/>
		<property name="destroyScript" hidden="true" default="filex/unpatch"/>
	</type>

unpatch.sh

echo "unpatching ${deployed.configurationFile}"

sed --in-place '/${deployed.comment} ${deployed.beginMarkup}/,/${deployed.comment} \${deployed.endMarkup}/d' ${deployed.configurationFile}