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:mod:`ModuleBase` --- Base class for Bot modules
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================================================
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yabba blahblah blahblah
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All bot modules should extend this class. ``ModuleBase`` includes helper methods
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to integrate modules with the bot for smooth running.
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.. automodule:: pyircbot.modulebase
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:members:
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@ -2,6 +2,20 @@ FROM ubuntu:trusty
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COPY start /start
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RUN apt-get update ; apt-get install -y python3 python3-sphinx python3-setuptools python3-dev python3-requests python3-pip python3-yaml python3-lxml make wget unzip libmysqlclient-dev ; pip3 install pytz praw ; cd /tmp ; wget https://github.com/jgarzik/python-bitcoinrpc/archive/master.zip ; unzip master.zip ; cd python-bitcoinrpc-master/ ; python3 setup.py install ; cd /tmp ; wget https://github.com/dpedu/MySQL-for-Python-3/archive/master.zip -O mysqldb.zip ; unzip mysqldb.zip ; cd MySQL-for-Python-3-master/ ; python3 setup.py install ; chmod +x /start ; mkdir /tmp/docs
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RUN apt-get update ; \
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apt-get install -y python3 python3-sphinx python3-setuptools python3-dev python3-requests python3-pip python3-yaml python3-lxml make wget unzip libmysqlclient-dev ; \
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pip3 install pytz praw ; \
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cd /tmp ; \
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wget https://github.com/jgarzik/python-bitcoinrpc/archive/master.zip ; \
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unzip master.zip ; \
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cd python-bitcoinrpc-master/ ; \
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python3 setup.py install ; \
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cd /tmp ; \
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wget https://github.com/dpedu/MySQL-for-Python-3/archive/master.zip -O mysqldb.zip ; \
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unzip mysqldb.zip ; \
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cd MySQL-for-Python-3-master/ ; \
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python3 setup.py install ; \
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chmod +x /start ; \
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mkdir /tmp/docs
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CMD /start
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************************
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Module Developer's Guide
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========================
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************************
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TODO: Developing modules
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Modules consist of a single python file, named for the module. For example, EchoExample.py
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Getting Started
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===============
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All modules should inherit from the base class
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:doc:`ModuleBase </api/modulebase>`, and should be named matching their python
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file's name.
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.. code-block:: python
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from pyircbot.modulebase import ModuleBase,ModuleHook
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class EchoExample(ModuleBase):
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The class's ``__init__`` method accepts 2 args - a reference to the bot's API
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and what the bot has decided to name this module. These are passed to
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ModuleBase. Module's init method should be as quick as possible. The bot loads
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modules one after the other so a long delay slows bot startup.
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.. code-block:: python
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def __init__(self, bot, moduleName):
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ModuleBase.__init__(self, bot, moduleName);
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If your module has a config file - EchoExample.json - it can be loaded by
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calling :py:meth:`pyircbot.modulebase.ModuleBase.loadConfig`:
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.. code-block:: python
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self.loadConfig()
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print(self.config)
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In ``__init__``, the module lists what hooks it wants to listen for. Hooks are
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executed when the corresponding IRC protocol command is received.
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.. code-block:: python
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self.hooks=[ModuleHook("PRIVMSG", self.echo)]
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Then, a handler for this hook:
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.. code-block:: python
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def echo(self, args, prefix, trailing):
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The handler is passed the data sent by the irc server. What these are can vary,
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but the format is the same. ``args`` is the list of arguments the IRC server
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sent. ``prefix`` is the sender. ``trailing`` is arbitrary data associated with
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the event. In the case of PRIVMSG: args has one entry - the channel name or
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nick the message was in/from. Prefix is a user's nick string, in the format of:
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NickName!username@ip. Trailing is message content. Since the module describe
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above echos messages, let's do that:
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.. code-block:: python
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self.bot.act_PRIVMSG(args[0], trailing)
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This sends a PRIVMSG to the originating channel or nick, with the same msg
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content that was received.
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Beyond this, a module's class can import or do anything python can to deliver
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responses. For modules that use threads or connect to external services, a
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shutdown handler is needed to ensure a clean shutdown.
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.. code-block:: python
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def ondisable(self):
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"""Called when the module should be disabled. Your module should do any sort
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of clean-up operations here like ending child threads or saving data files.
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"""
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pass
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Advanced Usage
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==============
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Check out the helper methods that :doc:`ModuleBase </api/modulebase>` offers.
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Refer to existing modules for helper methods from elsewhere in PyIRCBot.
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:doc:`PyIRCBot </api/pyircbot>` has some useful methods:
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- :py:meth:`pyircbot.pyircbot.PyIRCBot.messageHasCommand`
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- :py:meth:`pyircbot.pyircbot.PyIRCBot.getDataPath`
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- :py:meth:`pyircbot.pyircbot.PyIRCBot.getmodulebyname`
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Inter-module Communication
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--------------------------
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In the list above, :py:meth:`pyircbot.pyircbot.PyIRCBot.getmodulebyname` can be
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used to retrieve a reference to another loaded module. This is simply the
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instance of the other module's class.
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But what if you wanted a module to find another by type? For example, a module
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providing a cache API could provide a service called "cache". Modules that use
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a cache API to function could find this module - or another that's functionally
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equivalent.
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Modules providing a service state so like:
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.. code-block:: python
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def __init__(self, bot, moduleName):
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ModuleBase.__init__(self, bot, moduleName);
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self.services=["cache"]
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Then, another module can find this one by using either
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:py:meth:`pyircbot.pyircbot.PyIRCBot.getmodulesbyservice` or
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:py:meth:`pyircbot.pyircbot.PyIRCBot.getBestModuleForService` and passing the
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name "cache". The first returns a list of all modules offering the "cache"
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service, the second returns an arbitrary module returning cache if more that
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one is found.
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**PyIRCBot does NOT automatically handle inter-module communication. Meaning,
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modules providing a service should be loaded before modules requiring the
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service. Modules using a service MUST BE unloaded before the service module
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is unloaded.**
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