Add rabbitmq-clusterer support

clusterer/Dockerfile

@@ -0,0 +1,10 @@
+FROM rabbitmq
+
+ENV RABBITMQ_CLUSTERER_VERSION 1.0.3
+
+RUN set -x \
+        && apt-get update && apt-get install -y --no-install-recommends ca-certificates wget && rm -rf /var/lib/apt/lists/* \
+        && wget -O /usr/lib/rabbitmq/lib/rabbitmq_server-${RABBITMQ_VERSION}/plugins/rabbitmq_clusterer-${RABBITMQ_CLUSTERER_VERSION}.ez https://github.com/rabbitmq/rabbitmq-clusterer/releases/download/v${RABBITMQ_CLUSTERER_VERSION}/rabbitmq_clusterer-${RABBITMQ_CLUSTERER_VERSION}.ez \
+        && apt-get purge -y --auto-remove ca-certificates wget
+
+RUN rabbitmq-plugins enable --offline rabbitmq_clusterer

docker-entrypoint.sh

@@ -30,6 +30,13 @@ sslConfigKeys=(
 managementConfigKeys=(
 	"${sslConfigKeys[@]/#/ssl_}"
 )
+clustererConfigKeys=(
+    gospel_node
+    version
+)
+for var in $(compgen -A variable | awk -F'RABBITMQ_CLUSTERER_' '/^RABBITMQ_CLUSTERER_NODE_/ {print $1}'); do
+    clustererConfigKeys+=($var)
+done
 rabbitConfigKeys=(
 	default_pass
 	default_user
@@ -46,6 +53,7 @@ fileConfigKeys=(
 )
 allConfigKeys=(
 	"${managementConfigKeys[@]/#/management_}"
+	"${clustererConfigKeys[@]/#/clusterer_}"
 	"${rabbitConfigKeys[@]}"
 	"${sslConfigKeys[@]/#/ssl_}"
 )
@@ -259,6 +267,24 @@ if [ "$1" = 'rabbitmq-server' ] && [ "$haveConfig" ]; then
 		)
 	fi
 
+	if [ "$(rabbitmq-plugins list -m -e rabbitmq_clusterer)" ]; then
+		rabbitmqClustererConfig+=( '{ version, '${RABBITMQ_CLUSTERER_CONFIG_VERSION:-1}' }' )
+		rabbitmqClustererConfig+=( "{ gospel, { node, rabbit@"$RABBITMQ_CLUSTERER_GOSPEL_NODE" } }" )
+		for node_info in $(compgen -A variable | grep ^RABBITMQ_CLUSTERER_NODE_*); do
+			IFS=$','
+			opts=(${!node_info})
+			unset IFS
+			rabbitmqClustererConfigNodes+=( "{ rabbit@"${opts[0]}", "${opts[1]}" }" )
+		done
+		rabbitmqClustererConfig+=( "{ nodes, $(rabbit_array "${rabbitmqClustererConfigNodes[@]}") }" )
+
+		export RABBITMQ_BOOT_MODULE=rabbit_clusterer
+
+		fullConfig+=(
+			"{ rabbitmq_clusterer, $(rabbit_array "{ config, $(rabbit_array "${rabbitmqClustererConfig[@]}") }") }"
+		)
+	fi
+
 	echo "$(rabbit_array "${fullConfig[@]}")." > /etc/rabbitmq/rabbitmq.config
 fi
 

update.sh

@@ -7,6 +7,9 @@ debianVersion="$(curl -sSL 'http://www.rabbitmq.com/debian/dists/testing/main/bi
 
 rabbitmqVersion="${debianVersion%%-*}"
 
+rabbitmqClustererVersion="$(curl -sSL https://github.com/rabbitmq/rabbitmq-clusterer/releases/latest | awk '/<title>Release/ {print substr($2,2)}')"
+
 set -x
 sed -ri 's/^(ENV RABBITMQ_VERSION) .*/\1 '"$rabbitmqVersion"'/' Dockerfile
 sed -ri 's/^(ENV RABBITMQ_DEBIAN_VERSION) .*/\1 '"$debianVersion"'/' Dockerfile
+sed -ri 's/^(ENV RABBITMQ_CLUSTERER_VERSION) .*/\1 '"$rabbitmqClustererVersion"'/' Dockerfile