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Split localfilesystem storage plugin into component parts
This commit is contained in:
Nick O'Leary
187
red/runtime/storage/localfilesystem/index.js
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187
red/runtime/storage/localfilesystem/index.js
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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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var fs = require('fs-extra');
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var when = require('when');
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var nodeFn = require('when/node/function');
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var fspath = require("path");
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var log = require("../../log");
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var util = require("./util");
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var library = require("./library");
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var sessions = require("./sessions");
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var runtimeSettings = require("./settings");
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var initialFlowLoadComplete = false;
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var settings;
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var flowsFile;
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var flowsFullPath;
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var flowsFileBackup;
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var credentialsFile;
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var credentialsFileBackup;
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var oldCredentialsFile;
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var localfilesystem = {
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init: function(_settings) {
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settings = _settings;
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var promises = [];
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if (!settings.userDir) {
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try {
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fs.statSync(fspath.join(process.env.NODE_RED_HOME,".config.json"));
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settings.userDir = process.env.NODE_RED_HOME;
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} catch(err) {
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try {
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// Consider compatibility for older versions
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if (process.env.HOMEPATH) {
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fs.statSync(fspath.join(process.env.HOMEPATH,".node-red",".config.json"));
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settings.userDir = fspath.join(process.env.HOMEPATH,".node-red");
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}
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} catch(err) {
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}
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if (!settings.userDir) {
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settings.userDir = fspath.join(process.env.HOME || process.env.USERPROFILE || process.env.HOMEPATH || process.env.NODE_RED_HOME,".node-red");
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if (!settings.readOnly) {
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promises.push(util.promiseDir(fspath.join(settings.userDir,"node_modules")));
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}
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}
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}
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}
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if (settings.flowFile) {
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flowsFile = settings.flowFile;
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// handle Unix and Windows "C:\"
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if ((flowsFile[0] == "/") || (flowsFile[1] == ":")) {
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// Absolute path
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flowsFullPath = flowsFile;
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} else if (flowsFile.substring(0,2) === "./") {
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// Relative to cwd
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flowsFullPath = fspath.join(process.cwd(),flowsFile);
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} else {
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try {
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fs.statSync(fspath.join(process.cwd(),flowsFile));
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// Found in cwd
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flowsFullPath = fspath.join(process.cwd(),flowsFile);
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} catch(err) {
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// Use userDir
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flowsFullPath = fspath.join(settings.userDir,flowsFile);
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}
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}
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} else {
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flowsFile = 'flows_'+require('os').hostname()+'.json';
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flowsFullPath = fspath.join(settings.userDir,flowsFile);
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}
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var ffExt = fspath.extname(flowsFullPath);
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var ffName = fspath.basename(flowsFullPath);
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var ffBase = fspath.basename(flowsFullPath,ffExt);
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var ffDir = fspath.dirname(flowsFullPath);
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credentialsFile = fspath.join(settings.userDir,ffBase+"_cred"+ffExt);
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credentialsFileBackup = fspath.join(settings.userDir,"."+ffBase+"_cred"+ffExt+".backup");
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oldCredentialsFile = fspath.join(settings.userDir,"credentials.json");
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flowsFileBackup = fspath.join(ffDir,"."+ffName+".backup");
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sessions.init(settings);
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runtimeSettings.init(settings);
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var packageFile = fspath.join(settings.userDir,"package.json");
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var packagePromise = when.resolve();
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promises.push(library.init(settings));
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if (!settings.readOnly) {
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packagePromise = function() {
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try {
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fs.statSync(packageFile);
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} catch(err) {
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var defaultPackage = {
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"name": "node-red-project",
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"description": "A Node-RED Project",
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"version": "0.0.1"
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};
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return util.writeFile(packageFile,JSON.stringify(defaultPackage,"",4));
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}
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return true;
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}
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}
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return when.all(promises).then(packagePromise);
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},
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getFlows: function() {
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if (!initialFlowLoadComplete) {
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initialFlowLoadComplete = true;
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log.info(log._("storage.localfilesystem.user-dir",{path:settings.userDir}));
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log.info(log._("storage.localfilesystem.flows-file",{path:flowsFullPath}));
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}
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return util.readFile(flowsFullPath,flowsFileBackup,[],'flow');
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},
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saveFlows: function(flows) {
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if (settings.readOnly) {
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return when.resolve();
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}
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try {
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fs.renameSync(flowsFullPath,flowsFileBackup);
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} catch(err) {
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}
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var flowData;
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if (settings.flowFilePretty) {
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flowData = JSON.stringify(flows,null,4);
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} else {
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flowData = JSON.stringify(flows);
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}
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return util.writeFile(flowsFullPath, flowData);
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},
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getCredentials: function() {
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return util.readFile(credentialsFile,credentialsFileBackup,{},'credentials');
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},
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saveCredentials: function(credentials) {
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if (settings.readOnly) {
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return when.resolve();
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}
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try {
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fs.renameSync(credentialsFile,credentialsFileBackup);
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} catch(err) {
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}
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var credentialData;
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if (settings.flowFilePretty) {
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credentialData = JSON.stringify(credentials,null,4);
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} else {
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credentialData = JSON.stringify(credentials);
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}
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return util.writeFile(credentialsFile, credentialData);
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},
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getSettings: runtimeSettings.getSettings,
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saveSettings: runtimeSettings.saveSettings,
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getSessions: sessions.getSessions,
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saveSessions: sessions.saveSessions,
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getLibraryEntry: library.getLibraryEntry,
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saveLibraryEntry: library.saveLibraryEntry
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};
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module.exports = localfilesystem;
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