Add command to destroy databases

Author: kane-c

commands

@@ -122,7 +122,7 @@ case "$1" in
     $PLUGIN_COMMAND_PREFIX:create <name>, Create a $PLUGIN_SERVICE service
     $PLUGIN_COMMAND_PREFIX:create-database <name> <db>, Create a $PLUGIN_SERVICE database in the specified service
     $PLUGIN_COMMAND_PREFIX:destroy <name>, Delete the $PLUGIN_SERVICE service and stop its container if there are no links left
-    $PLUGIN_COMMAND_PREFIX:destroy-database <name> <db>, Delete a $PLUGIN_SERVICE database on the specified service
+    $PLUGIN_COMMAND_PREFIX:destroy-database <name> <db>, Delete a $PLUGIN_SERVICE database in the specified service
     $PLUGIN_COMMAND_PREFIX:export <name>, Export a dump of the $PLUGIN_SERVICE service database
     $PLUGIN_COMMAND_PREFIX:expose <name> [port], Expose a $PLUGIN_SERVICE service on custom port if provided (random port otherwise)
     $PLUGIN_COMMAND_PREFIX:import <name> < <file>, Import a dump into the $PLUGIN_SERVICE service database

subcommands/destroy-database

@@ -0,0 +1,29 @@
+#!/usr/bin/env bash
+source "$(dirname "$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)")/config"
+set -eo pipefail; [[ $DOKKU_TRACE ]] && set -x
+source "$PLUGIN_BASE_PATH/common/functions"
+source "$(dirname "$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)")/functions"
+
+postgres-destroy-database-cmd() {
+  declare desc="delete a $PLUGIN_SERVICE database from the specified service"
+  local cmd="$PLUGIN_COMMAND_PREFIX:destroy-database" argv=("$@"); [[ ${argv[0]} == "$cmd" ]] && shift 1
+  declare SERVICE="$1" DATABASE="$2"
+
+  [[ -z "$SERVICE" ]] && dokku_log_fail "Please specify a name for the service"
+  [[ -z "$DATABASE" ]] && dokku_log_fail "Please specify a name for the database"
+  verify_service_name "$SERVICE"
+  verify_database_name "$SERVICE" "$DATABASE"
+  SERVICE_ROOT="$PLUGIN_DATA_ROOT/$SERVICE"
+  SERVICE_NAME="$(get_service_name "$SERVICE")"
+
+  dokku_log_info1 "Deleting $DATABASE from $SERVICE"
+  if docker exec "$SERVICE_NAME" su - postgres -c "psql -c \"DROP DATABASE $DATABASE;\"" 2> /dev/null && docker exec "$SERVICE_NAME" su - postgres -c "psql -c \"DROP USER $DATABASE;\"" 2> /dev/null; then
+    rm -f "$SERVICE_ROOT/databases/$DATABASE"
+    rm -f "$SERVICE_ROOT/auth/$DATABASE"
+    dokku_log_info2 "$PLUGIN_SERVICE $SERVICE database deleted: $DATABASE"
+  else
+    dokku_log_fail "Could not delete the database"
+  fi
+}
+
+postgres-destroy-database-cmd "$@"