1. switches from a composable plugin model to a single-plugin model
2. switches class methods to static methods in the BaseConsensusRules class
3. adds create_transaction, sign_transaction, and verify_transaction to
the plugin API
TODO: If we adopt this model, all references in e.g. client.py to util
methods like `sign_tx` need to be routed through the plugin methods, and
possibly need to be added to the plugin interface.
Without this running blockchaindb yields:
Traceback (most recent call last):
File "/usr/lib/python3.4/runpy.py", line 170, in _run_module_as_main
"__main__", mod_spec)
File "/usr/lib/python3.4/runpy.py", line 85, in _run_code
exec(code, run_globals)
File "/usr/lib/python3.4/trace.py", line 858, in <module>
main()
File "/usr/lib/python3.4/trace.py", line 804, in main
t.runctx(code, globs, globs)
File "/usr/lib/python3.4/trace.py", line 510, in runctx
exec(cmd, globals, locals)
File "/usr/local/bin/bigchaindb", line 9, in <module>
load_entry_point('BigchainDB==0.1.4', 'console_scripts', 'bigchaindb')()
File "/usr/local/lib/python3.4/dist-packages/pkg_resources/__init__.py", line 549, in load_entry_point
return get_distribution(dist).load_entry_point(group, name)
File "/usr/local/lib/python3.4/dist-packages/pkg_resources/__init__.py", line 2542, in load_entry_point
return ep.load()
File "/usr/local/lib/python3.4/dist-packages/pkg_resources/__init__.py", line 2202, in load
return self.resolve()
File "/usr/local/lib/python3.4/dist-packages/pkg_resources/__init__.py", line 2208, in resolve
module = __import__(self.module_name, fromlist=['__name__'], level=0)
File "/usr/local/lib/python3.4/dist-packages/BigchainDB-0.1.4-py3.4.egg/bigchaindb/commands/bigchain.py", line 14, in <module>
from bigchaindb.processes import Processes
File "/usr/local/lib/python3.4/dist-packages/BigchainDB-0.1.4-py3.4.egg/bigchaindb/processes.py", line 9, in <module>
from bigchaindb.web import server
ImportError: No module named 'bigchaindb.web'
There was a problem related to the import of the module
`bigchaindb.web.views`.
The module, when imported, inizialises a new `Bigchain` instance, and
this is wrong for testing and because it's a bad practice.
I spent more or less 2h finding out the problem.
Added the following sentence to the Python Style Guide section on Maximum Line Length:
"As a hard limit, keep all lines less than 119 characters (which is the width of GitHub code review)."
