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Destroyed Node RED dictionary (markdown)

Nick O'Leary 2015-03-16 21:59:07 +00:00
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Node-RED-dictionary.md

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### Node types
* Input Node: A node that starts a new flow. Upon meeting a pre-configured condition, it creates a new msg object that travels around the flow.
* Query Node: A node that does something when it receives an incoming msg object
* Watch Node: An input or query node that specifically watches local or remote files/directories for any change
* Output Node: A node where a flow terminates. It usually produces some output accessible outside the Node-RED runtime
### Technical terms
* Canvas: The drawing area in the UI on which flows are designed
* Context: JavaScript object used by function nodes to store state between function node invocations.
* Credentials: Special properties of nodes that don't get exported/imported as flows. They're stored in a separate flows file. Example credentials are: tokens provided by users or data obtained by nodes (such as security keys)
* File Event: Events that happen to files/directories such as access/change/deletion.
* Flow: Nodes wired together to achieve a desired functionality
* Global Context: A JavaScript object that is shared and is accessible by all function nodes. It is used to store global state.
* Glob Pattern: Pattern matching, based on wildcard characters. Glob is the particular pattern. Globs are simpler than regular expressions. The term is widely used in Unix-like environments.
* Initialization: After hitting the deploy button in the UI, nodes that are on the canvas might run necessary start-up logic, called initialization.
* msg: The object that is the input into nodes and is what nodes output. It's the data being passed around in flows
* msg.payload: The meaningful, processed data representation/outcome of a node operation such as an image buffer
* OAuth: Is an open standard to authorization. It provides client applications delegated, secure access to server resources on behalf of the resource owner. (Source: [Wikipedia](http://en.wikipedia.org/wiki/OAuth))
* Wire: The connection between nodes. Nodes might have more than one wire leaving them and nodes might have multiple outputs.