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update external context

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- Implement `delete` function
- Swap default easily
- Change memory context as a plugin
- Update localfilesystem plugin
  -  Change file/folder structure
This commit is contained in:
Hiroki Uchikawa
2018-03-23 17:18:56 +09:00
committed by HirokiUchikawa
parent b4b70a988e
commit e33ec0cf50
11 changed files with 581 additions and 441 deletions
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114
red/runtime/nodes/context/localfilesystem.js
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@@ -14,67 +14,105 @@
* limitations under the License.
**/
var storage = require('node-persist');
var JsonDB = require('node-json-db');
var fs = require('fs-extra');
var fspath = require("path");
var path = require("path");
var configs;
var storagePath;
var fileStorages;
var storageBaseDir;
var storages;
function createStorage(path) {
var fileStorage = storage.create({dir: fspath.join(storagePath,path)});
fileStorage.initSync();
fileStorages[path] = fileStorage;
function createStorage(scope) {
var i = scope.indexOf(":")
if(i === -1){
if(scope === "global"){
storages[scope] = new JsonDB(path.join(storageBaseDir,"global",scope), true, true);
}else{ // scope:flow
storages[scope] = new JsonDB(path.join(storageBaseDir,scope,"flow"), true, true);
}
}else{ // scope:local
var ids = scope.split(":")
storages[scope] = new JsonDB(path.join(storageBaseDir,ids[1],ids[0]), true, true);
}
}
var localfilesystem = {
init: function(_configs) {
configs = _configs;
fileStorages = {};
storages = {};
if (!configs.dir) {
try {
fs.statSync(fspath.join(process.env.NODE_RED_HOME,".config.json"));
storagePath = fspath.join(process.env.NODE_RED_HOME,"contexts");
} catch(err) {
if(configs.settings && configs.settings.userDir){
storageBaseDir = path.join(configs.settings.userDir,"contexts");
}else{
try {
// Consider compatibility for older versions
if (process.env.HOMEPATH) {
fs.statSync(fspath.join(process.env.HOMEPATH,".node-red",".config.json"));
storagePath = fspath.join(process.env.HOMEPATH,".node-red","contexts");
}
fs.statSync(path.join(process.env.NODE_RED_HOME,".config.json"));
storageBaseDir = path.join(process.env.NODE_RED_HOME,"contexts");
} catch(err) {
}
if (!configs.dir) {
storagePath = fspath.join(process.env.HOME || process.env.USERPROFILE || process.env.HOMEPATH || process.env.NODE_RED_HOME,".node-red","contexts");
try {
// Consider compatibility for older versions
if (process.env.HOMEPATH) {
fs.statSync(path.join(process.env.HOMEPATH,".node-red",".config.json"));
storageBaseDir = path.join(process.env.HOMEPATH,".node-red","contexts");
}
} catch(err) {
}
if (!storageBaseDir) {
storageBaseDir = path.join(process.env.HOME || process.env.USERPROFILE || process.env.HOMEPATH || process.env.NODE_RED_HOME,".node-red","contexts");
}
}
}
}else{
storagePath = configs.dir;
storageBaseDir = configs.dir;
}
},
stop: function() {
return when.resolve();
},
get: function (key, flowId) {
if(!fileStorages[flowId]){
createStorage(flowId);
get: function (key, scope) {
if(!storages[scope]){
createStorage(scope);
}
try{
storages[scope].reload();
return storages[scope].getData("/" + key.replace(/\./g,"/"));
}catch(err){
if(err.name === "DataError"){
return undefined;
}else{
throw err;
}
}
return fileStorages[flowId].getItemSync(key);
},
set: function (key, value, flowId) {
if(!fileStorages[flowId]){
createStorage(flowId);
set: function (key, value, scope) {
if(!storages[scope]){
createStorage(scope);
}
if(value){
storages[scope].push("/" + key.replace(/\./g,"/"), value);
}else{
storages[scope].delete("/" + key.replace(/\./g,"/"));
}
fileStorages[flowId].setItemSync(key, value);
},
keys: function (flowId) {
if(!fileStorages[flowId]){
createStorage(flowId);
keys: function (scope) {
if(!storages[scope]){
return [];
}
return Object.keys(storages[scope].getData("/"));
},
delete: function(scope){
if(storages[scope]){
storages[scope].delete("/");
if(scope.indexOf(":") === -1){
fs.removeSync(path.dirname(storages[scope].filename));
}else{
try{
fs.statSync(storages[scope].filename);
fs.unlinkSync(storages[scope].filename);
}catch(err){
console.log("deleted");
}
}
delete storages[scope];
}
return fileStorages[flowId].keys();
}
};