plugeth-utils/docs/types.rst
2022-02-14 10:02:35 -08:00

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.. _types:
======================
Basic Types of Plugins
======================
While PluGeth has been designed to be versatile and customizable, when learning the project it can be helpful to think of plugins as being of four different archetypes.
RPC Methods
-----------
These plugins provide new json rpc methods to access several objects containing real time and historic data.
Subcommand
------------
A subcommand redifines the total behavior of Geth and could stand on its own. In contrast with the other plugin types which, in general, are meant to capture and manipulate information, a subcommand is meant to change the overall behavior of Geth. It may do this in order to capture information but the primary fuctionality is a modulation of geth behaviour.
Tracers
-------
Tracers are used to collect information about a transaction or block during EVM execution. They can be written to refine the results of a ``debug`` trace or written to delver custom data using various other objects available from the PluGeth APIs.
Subscriptions
-------------
Subscriptions provide real time notification of data from the EVM as it processes transactions.
.. NOTE:: Plugins are not limited to a singular functionality and can be customized to operate as hybrids of the above. See `blockupdates`_ as an example.
.. _blockupdates: https://github.com/openrelayxyz/plugeth-plugins/tree/master/packages/blockupdates