mirror of
https://github.com/node-red/node-red.git
synced 2023-10-10 13:36:53 +02:00
looks like LevelDB has been abandoned on Node :-( searching for simple alternatives
This commit is contained in:
Dave C-J
parent
62fa61254e
commit
8eb2bcbd9c
@ -1,114 +0,0 @@
|
|||||||
<!--
|
|
||||||
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.
|
|
||||||
-->
|
|
||||||
|
|
||||||
<script type="text/x-red" data-template-name="leveldbase">
|
|
||||||
<div class="form-row">
|
|
||||||
<label for="node-config-input-db"><i class="icon-briefcase"></i> Database</label>
|
|
||||||
<input type="text" id="node-config-input-db" placeholder="database path/name">
|
|
||||||
</div>
|
|
||||||
</script>
|
|
||||||
|
|
||||||
<script type="text/javascript">
|
|
||||||
RED.nodes.registerType('leveldbase',{
|
|
||||||
category: 'config',
|
|
||||||
defaults: {
|
|
||||||
db: {value:"",required:true}
|
|
||||||
},
|
|
||||||
label: function() {
|
|
||||||
return this.db;
|
|
||||||
}
|
|
||||||
});
|
|
||||||
</script>
|
|
||||||
|
|
||||||
<script type="text/x-red" data-template-name="leveldb in">
|
|
||||||
<div class="form-row node-input-level">
|
|
||||||
<label for="node-input-level"><i class="icon-briefcase"></i> Database</label>
|
|
||||||
<input type="text" id="node-input-level">
|
|
||||||
</div>
|
|
||||||
<div class="form-row">
|
|
||||||
<label for="node-input-name"><i class="icon-tag"></i> Name</label>
|
|
||||||
<input type="text" id="node-input-name" placeholder="Name">
|
|
||||||
</div>
|
|
||||||
</script>
|
|
||||||
|
|
||||||
<script type="text/x-red" data-help-name="leveldb in">
|
|
||||||
<p>Uses <a href="https://code.google.com/p/leveldb/" target="_new"><i>LevelDB</i></a> for a simple key value pair database.</p>
|
|
||||||
<p>Use this node to <b>get</b>, or retrieve the data already saved in the database.</p>
|
|
||||||
<p><b>msg.topic</b> must hold the <i>key</i> for the database, and the result is returned in <b>msg.payload</b>.</p>
|
|
||||||
</script>
|
|
||||||
|
|
||||||
<script type="text/javascript">
|
|
||||||
RED.nodes.registerType('leveldb in',{
|
|
||||||
category: 'storage-input',
|
|
||||||
color:"#dbb84d",
|
|
||||||
defaults: {
|
|
||||||
level: {type:"leveldbase",required:true},
|
|
||||||
name: {value:""}
|
|
||||||
},
|
|
||||||
inputs:1,
|
|
||||||
outputs:1,
|
|
||||||
icon: "leveldb.png",
|
|
||||||
label: function() {
|
|
||||||
var levelNode = RED.nodes.node(this.level);
|
|
||||||
return this.name||(levelNode?levelNode.label():"leveldb");
|
|
||||||
},
|
|
||||||
labelStyle: function() {
|
|
||||||
return this.name?"node_label_italic":"";
|
|
||||||
}
|
|
||||||
});
|
|
||||||
</script>
|
|
||||||
|
|
||||||
|
|
||||||
<script type="text/x-red" data-template-name="leveldb out">
|
|
||||||
<div class="form-row node-input-level">
|
|
||||||
<label for="node-input-level"><i class="icon-briefcase"></i> Database</label>
|
|
||||||
<input type="text" id="node-input-level">
|
|
||||||
</div>
|
|
||||||
<div class="form-row">
|
|
||||||
<label for="node-input-name"><i class="icon-tag"></i> Name</label>
|
|
||||||
<input type="text" id="node-input-name" placeholder="Name">
|
|
||||||
</div>
|
|
||||||
</script>
|
|
||||||
|
|
||||||
|
|
||||||
<script type="text/x-red" data-help-name="leveldb out">
|
|
||||||
<p>Uses <a href="https://code.google.com/p/leveldb/" target="_new"><i>LevelDB</i></a> for a simple key value pair database.</p>
|
|
||||||
<p>Use this node to <b>put</b> (save) the <b>msg.payload</b> to the named database file, using <b>msg.topic</b> as the key.</p>
|
|
||||||
<p>To <b>delete</b> information do a <b>put</b> to the required <b>msg.topic</b> (key) with a <b>msg.payload</b> of <b><i>null</i></b>.</p>
|
|
||||||
</script>
|
|
||||||
|
|
||||||
<script type="text/javascript">
|
|
||||||
RED.nodes.registerType('leveldb out',{
|
|
||||||
category: 'storage-output',
|
|
||||||
color:"#dbb84d",
|
|
||||||
defaults: {
|
|
||||||
level: {type:"leveldbase",required:true},
|
|
||||||
op: {value:"put",required:true},
|
|
||||||
name: {value:""}
|
|
||||||
},
|
|
||||||
inputs:1,
|
|
||||||
outputs:0,
|
|
||||||
icon: "leveldb.png",
|
|
||||||
align: "right",
|
|
||||||
label: function() {
|
|
||||||
var levelNode = RED.nodes.node(this.level);
|
|
||||||
return this.name||(levelNode?levelNode.label():"leveldb");
|
|
||||||
},
|
|
||||||
labelStyle: function() {
|
|
||||||
return this.name?"node_label_italic":"";
|
|
||||||
}
|
|
||||||
});
|
|
||||||
</script>
|
|
||||||
@ -1,90 +0,0 @@
|
|||||||
/**
|
|
||||||
* 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('leveldb');
|
|
||||||
|
|
||||||
function LevelNode(n) {
|
|
||||||
RED.nodes.createNode(this,n);
|
|
||||||
this.dbname = n.db;
|
|
||||||
lvldb.open(this.dbname, { create_if_missing: true }, onOpen);
|
|
||||||
var node = this;
|
|
||||||
function onOpen(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.op = n.op;
|
|
||||||
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.error(err);
|
|
||||||
msg.payload = JSON.parse(value);
|
|
||||||
delete msg.cmd;
|
|
||||||
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.levelConfig = RED.nodes.getNode(this.level);
|
|
||||||
|
|
||||||
if (this.levelConfig) {
|
|
||||||
var node = this;
|
|
||||||
node.on("input", function(msg) {
|
|
||||||
if (typeof msg.topic === 'string') {
|
|
||||||
console.log(msg);
|
|
||||||
if (msg.payload === null) {
|
|
||||||
node.levelConfig.db.del(msg.topic);
|
|
||||||
}
|
|
||||||
else {
|
|
||||||
node.levelConfig.db.put(msg.topic, JSON.stringify(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);
|
|
||||||
Loading…
Reference in New Issue
Block a user