2018-03-15 21:52:17 +01:00
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/**
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* Copyright JS Foundation and other contributors, http://js.foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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**/
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2018-03-23 09:18:56 +01:00
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var JsonDB = require('node-json-db');
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2018-03-15 21:52:17 +01:00
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var fs = require('fs-extra');
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2018-03-23 09:18:56 +01:00
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var path = require("path");
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2018-03-15 21:52:17 +01:00
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2018-05-24 14:42:40 +02:00
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function createStorage(storageBaseDir, scope) {
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2018-03-23 09:18:56 +01:00
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var i = scope.indexOf(":")
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if(i === -1){
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if(scope === "global"){
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2018-05-24 14:42:40 +02:00
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return new JsonDB(path.join(storageBaseDir,"global",scope), true, true);
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2018-03-23 09:18:56 +01:00
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}else{ // scope:flow
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2018-05-24 14:42:40 +02:00
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return new JsonDB(path.join(storageBaseDir,scope,"flow"), true, true);
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2018-03-23 09:18:56 +01:00
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}
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}else{ // scope:local
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var ids = scope.split(":")
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2018-05-24 14:42:40 +02:00
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return new JsonDB(path.join(storageBaseDir,ids[1],ids[0]), true, true);
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2018-03-23 09:18:56 +01:00
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}
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2018-03-15 21:52:17 +01:00
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}
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2018-05-24 14:42:40 +02:00
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function getStoragePath(config) {
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var base = config.base || "contexts";
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var storageBaseDir;
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if (!config.dir) {
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if(config.settings && config.settings.userDir){
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storageBaseDir = path.join(config.settings.userDir, base);
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}else{
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try {
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fs.statSync(path.join(process.env.NODE_RED_HOME,".config.json"));
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storageBaseDir = path.join(process.env.NODE_RED_HOME, base);
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} catch(err) {
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2018-03-15 21:52:17 +01:00
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try {
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2018-05-24 14:42:40 +02:00
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// Consider compatibility for older versions
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if (process.env.HOMEPATH) {
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fs.statSync(path.join(process.env.HOMEPATH,".node-red",".config.json"));
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storageBaseDir = path.join(process.env.HOMEPATH, ".node-red", base);
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2018-03-23 09:18:56 +01:00
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}
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2018-05-24 14:42:40 +02:00
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} catch(err) {
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}
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if (!storageBaseDir) {
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storageBaseDir = path.join(process.env.HOME || process.env.USERPROFILE || process.env.HOMEPATH || process.env.NODE_RED_HOME,".node-red", base);
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2018-03-15 21:52:17 +01:00
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}
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2018-03-23 09:18:56 +01:00
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}
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2018-03-15 21:52:17 +01:00
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}
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2018-05-24 14:42:40 +02:00
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}else{
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storageBaseDir = path.join(config.dir, base);
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}
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return storageBaseDir;
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}
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2018-03-15 21:52:17 +01:00
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2018-05-24 14:42:40 +02:00
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function LocalFileSystem(config){
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this.config = config;
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this.storageBaseDir = getStoragePath(this.config);
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this.storages = {};
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}
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LocalFileSystem.prototype.get = function (scope, key) {
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if(!this.storages[scope]){
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return undefined;
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}
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try{
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this.storages[scope].reload();
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return this.storages[scope].getData("/" + key.replace(/\./g,"/"));
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}catch(err){
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if(err.name === "DataError"){
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return undefined;
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2018-03-23 09:18:56 +01:00
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}else{
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2018-05-24 14:42:40 +02:00
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throw err;
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2018-03-15 21:52:17 +01:00
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}
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2018-05-24 14:42:40 +02:00
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}
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}
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LocalFileSystem.prototype.set = function(scope, key, value) {
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if(!this.storages[scope]){
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this.storages[scope] = createStorage(this.storageBaseDir ,scope);
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}
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if(value){
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this.storages[scope].push("/" + key.replace(/\./g,"/"), value);
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}else{
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this.storages[scope].delete("/" + key.replace(/\./g,"/"));
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}
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}
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LocalFileSystem.prototype.keys = function(scope) {
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if(!this.storages[scope]){
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return [];
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}
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return Object.keys(this.storages[scope].getData("/"));
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}
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LocalFileSystem.prototype.delete = function(scope){
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if(this.storages[scope]){
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this.storages[scope].delete("/");
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if(scope.indexOf(":") === -1){
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fs.removeSync(path.dirname(this.storages[scope].filename));
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}else{
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try{
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fs.statSync(this.storages[scope].filename);
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fs.unlinkSync(this.storages[scope].filename);
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}catch(err){
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2018-03-23 09:18:56 +01:00
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console.log("deleted");
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}
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2018-03-15 21:52:17 +01:00
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}
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2018-05-24 14:42:40 +02:00
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delete this.storages[scope];
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2018-03-15 21:52:17 +01:00
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}
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2018-05-24 14:42:40 +02:00
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}
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module.exports = function(config){
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return new LocalFileSystem(config);
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2018-03-15 21:52:17 +01:00
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};
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