new: [opensem] add charm

opensem/hooks/mysql_database-relation-joined

@@ -0,0 +1,28 @@
+#!/bin/bash
+
+. lib/common
+
+PASSWORD="$(relation-get password)"
+USER="$(relation-get user)"
+DBNAME="$(relation-get dbname)"
+
+# control=$(H "$USER" "$DBNAME" "$PASSWORD")
+
+# [ "$control" == "$(relation-get control || true)" ] && exit 0
+
+set -e
+
+cat <<EOF >> "${OPENSEM_CONFIG_FILE}"
+
+DB_CONNECTION=mysql
+DB_HOST=${TARGET_SERVICE_NAME}
+DB_PORT=3306
+DB_DATABASE=$DBNAME
+DB_USERNAME=$USER
+DB_PASSWORD=$PASSWORD
+
+EOF
+
+# relation-set control "$control"
+
+info "Configured opensem code for mysql access."