mirror of
https://github.com/node-red/node-red.git
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255 lines
10 KiB
JavaScript
255 lines
10 KiB
JavaScript
/**
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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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/**
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* @mixin @node-red/runtime_context
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*/
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var runtime;
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var util = require("@node-red/util").util;
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function exportContextStore(scope,ctx, store, result, callback) {
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ctx.keys(store,function(err, keys) {
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if (err) {
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return callback(err);
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}
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result[store] = {};
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var c = keys.length;
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if (c === 0) {
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callback(null);
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} else {
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keys.forEach(function(key) {
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ctx.get(key,store,function(err, v) {
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if (err) {
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return callback(err);
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}
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if (scope !== 'global' ||
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store === runtime.nodes.listContextStores().default ||
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!runtime.settings.hasOwnProperty("functionGlobalContext") ||
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!runtime.settings.functionGlobalContext.hasOwnProperty(key) ||
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runtime.settings.functionGlobalContext[key] !== v) {
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result[store][key] = util.encodeObject({msg:v});
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}
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c--;
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if (c === 0) {
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callback(null);
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}
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});
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});
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}
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});
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}
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var api = module.exports = {
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init: function(_runtime) {
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runtime = _runtime;
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},
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/**
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* Gets the info of an individual node set
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* @param {Object} opts
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* @param {User} opts.user - the user calling the api
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* @param {String} opts.scope - the scope of the context
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* @param {String} opts.id - the id of the context
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* @param {String} opts.store - the context store
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* @param {String} opts.key - the context key
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* @param {Object} opts.req - the request to log (optional)
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* @return {Promise} - the node information
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* @memberof @node-red/runtime_context
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*/
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getValue: function(opts) {
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return new Promise(function(resolve,reject) {
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var scope = opts.scope;
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var id = opts.id;
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var store = opts.store;
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var key = opts.key;
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var availableStores = runtime.nodes.listContextStores();
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//{ default: 'default', stores: [ 'default', 'file' ] }
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if (store && availableStores.stores.indexOf(store) === -1) {
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runtime.log.audit({event: "context.get",scope:scope,id:id,store:store,key:key,error:"not_found"}, opts.req);
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var err = new Error();
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err.code = "not_found";
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err.status = 404;
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return reject(err);
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}
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var ctx;
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if (scope === 'global') {
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ctx = runtime.nodes.getContext('global');
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} else if (scope === 'flow') {
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ctx = runtime.nodes.getContext(id);
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} else if (scope === 'node') {
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var node = runtime.nodes.getNode(id);
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if (node) {
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ctx = node.context();
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}
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}
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if (ctx) {
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if (key) {
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store = store || availableStores.default;
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ctx.get(key,store,function(err, v) {
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var encoded = util.encodeObject({msg:v});
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if (store !== availableStores.default) {
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encoded.store = store;
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}
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runtime.log.audit({event: "context.get",scope:scope,id:id,store:store,key:key}, opts.req);
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resolve(encoded);
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});
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return;
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} else {
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var stores;
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if (!store) {
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stores = availableStores.stores;
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} else {
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stores = [store];
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}
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var result = {};
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var c = stores.length;
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var errorReported = false;
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stores.forEach(function(store) {
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exportContextStore(scope,ctx,store,result,function(err) {
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if (err) {
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// TODO: proper error reporting
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if (!errorReported) {
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errorReported = true;
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runtime.log.audit({event: "context.get",scope:scope,id:id,store:store,key:key,error:"unexpected_error"}, opts.req);
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var err = new Error();
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err.code = "unexpected_error";
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err.status = 400;
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return reject(err);
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}
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return;
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}
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c--;
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if (c === 0) {
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if (!errorReported) {
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runtime.log.audit({event: "context.get",scope:scope,id:id,store:store,key:key},opts.req);
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resolve(result);
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}
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}
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});
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})
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}
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} else {
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runtime.log.audit({event: "context.get",scope:scope,id:id,store:store,key:key},opts.req);
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resolve({});
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}
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})
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},
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/**
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* Gets the info of an individual node set
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* @param {Object} opts
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* @param {User} opts.user - the user calling the api
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* @param {String} opts.scope - the scope of the context
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* @param {String} opts.id - the id of the context
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* @param {String} opts.store - the context store
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* @param {String} opts.key - the context key
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* @param {Object} opts.req - the request to log (optional)
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* @return {Promise} - the node information
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* @memberof @node-red/runtime_context
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*/
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delete: function(opts) {
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return new Promise(function(resolve,reject) {
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var scope = opts.scope;
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var id = opts.id;
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var store = opts.store;
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var key = opts.key;
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var availableStores = runtime.nodes.listContextStores();
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//{ default: 'default', stores: [ 'default', 'file' ] }
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if (store && availableStores.stores.indexOf(store) === -1) {
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runtime.log.audit({event: "context.get",scope:scope,id:id,store:store,key:key,error:"not_found"},opts.req);
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var err = new Error();
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err.code = "not_found";
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err.status = 404;
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return reject(err);
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}
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var ctx;
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if (scope === 'global') {
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ctx = runtime.nodes.getContext('global');
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} else if (scope === 'flow') {
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ctx = runtime.nodes.getContext(id);
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} else if (scope === 'node') {
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var node = runtime.nodes.getNode(id);
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if (node) {
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ctx = node.context();
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}
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}
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if (ctx) {
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if (key) {
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store = store || availableStores.default;
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ctx.set(key,undefined,store,function(err) {
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runtime.log.audit({event: "context.delete",scope:scope,id:id,store:store,key:key},opts.req);
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resolve();
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});
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return;
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} else {
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// TODO: support deleting whole context
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runtime.log.audit({event: "context.get",scope:scope,id:id,store:store,key:key,error:"not_found"},opts.req);
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var err = new Error();
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err.code = "not_found";
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err.status = 404;
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return reject(err);
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// var stores;
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// if (!store) {
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// stores = availableStores.stores;
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// } else {
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// stores = [store];
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// }
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//
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// var result = {};
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// var c = stores.length;
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// var errorReported = false;
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// stores.forEach(function(store) {
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// exportContextStore(scope,ctx,store,result,function(err) {
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// if (err) {
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// // TODO: proper error reporting
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// if (!errorReported) {
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// errorReported = true;
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// runtime.log.audit({event: "context.delete",scope:scope,id:id,store:store,key:key,error:"unexpected_error"});
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// var err = new Error();
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// err.code = "unexpected_error";
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// err.status = 400;
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// return reject(err);
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// }
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//
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// return;
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// }
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// c--;
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// if (c === 0) {
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// if (!errorReported) {
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// runtime.log.audit({event: "context.get",scope:scope,id:id,store:store,key:key});
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// resolve(result);
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// }
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// }
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// });
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// })
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}
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} else {
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runtime.log.audit({event: "context.delete",scope:scope,id:id,store:store,key:key},opts.req);
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resolve();
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}
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});
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}
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}
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