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diff --git a/nodes/storage/67-leveldb.js b/nodes/storage/67-leveldb.js
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+/**
+ * Copyright 2013 IBM Corp.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ **/
+
+var RED = require("../../red/red");
+var lvldb = require('level');
+
+function LevelNode(n) {
+ RED.nodes.createNode(this,n);
+ this.dbname = n.db;
+ var node = this;
+ lvldb(this.dbname, function(err, db) {
+ if (err) node.error(err);
+ node.db = db;
+ });
+}
+RED.nodes.registerType("leveldbase",LevelNode);
+
+function LevelDBNodeIn(n) {
+ RED.nodes.createNode(this,n);
+ this.level = n.level;
+ this.levelConfig = RED.nodes.getNode(this.level);
+
+ if (this.levelConfig) {
+ var node = this;
+ node.on("input", function(msg) {
+ if (typeof msg.topic === 'string') {
+ node.levelConfig.db.get(msg.topic, function(err, value) {
+ if (err) {
+ //node.warn(err);
+ // for some reason they treat nothing found as an error...
+ msg.payload = null; // so we should return null
+ }
+ else { msg.payload = value; }
+ node.send(msg);
+ });
+ }
+ else {
+ if (typeof msg.topic !== 'string') node.error("msg.topic (the key is not defined");
+ }
+ });
+ }
+ else {
+ this.error("LevelDB database name not configured");
+ }
+}
+RED.nodes.registerType("leveldb in",LevelDBNodeIn);
+
+
+function LevelDBNodeOut(n) {
+ RED.nodes.createNode(this,n);
+ this.level = n.level;
+ this.operation = n.operation;
+ this.levelConfig = RED.nodes.getNode(this.level);
+
+ if (this.levelConfig) {
+ var node = this;
+ node.on("input", function(msg) {
+ if (typeof msg.topic === 'string') {
+ if (node.operation === "delete") {
+ node.levelConfig.db.del(msg.topic);
+ }
+ else {
+ node.levelConfig.db.put(msg.topic, msg.payload, function(err) {
+ if (err) node.error(err);
+ });
+ }
+ }
+ else {
+ if (typeof msg.topic !== 'string') node.error("msg.topic (the key is not defined");
+ }
+ });
+ }
+ else {
+ this.error("LevelDB database name not configured");
+ }
+}
+RED.nodes.registerType("leveldb out",LevelDBNodeOut);