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27 lines
1014 B
Markdown
27 lines
1014 B
Markdown
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node-red-node-leveldb
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=====================
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A <a href="http://nodered.org" target="_new">Node-RED</a> node to read and write to a LevelDB database.
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Install
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-------
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Run the following command in the root directory of your Node-RED install
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npm install node-red-node-leveldb
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Usage
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-----
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Allows basic access to a LevelDB database.
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Uses <a href="https://code.google.com/p/leveldb/" target="_new"><i>LevelDB</i></a> for a simple key value pair database.
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There are two node to choose from...
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Use one node to either <b>put</b> (store) the <b>msg.payload</b> to the named database file, using <b>msg.topic</b> as the key, or to <b>delete</b> information select delete in the properties dialogue and again use <b>msg.topic</b> as the key.</b>.
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Use the other node to <b>get</b>, or retrieve the data already saved in the database.
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Again use <b>msg.topic</b> to hold the <i>key</i> for the database, and the result is returned in <b>msg.payload</b>. If nothing is found for the key then <i>null</i> is returned.
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