docs: import but don't link compared.rst
David Wilson
6 years ago
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Mitogen Compared To
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-------------------
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This provides a little free-text summary of conceptual differences between
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Mitogen and other tools, along with some basic perceptual metrics (project
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maturity/age, quality of tests, function matrix)
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Ansible
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#######
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Ansible is a complete provisioning system, Mitogen is a small component of such a system.
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You should use Ansible if ...
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You should not use Ansible if ...
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Baker
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#####
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http://bitbucket.org/mchaput/baker
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Chopsticks
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##########
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also supports recursion! but the recursively executed instance has no special knowledge of its identity in a tree structure, and little support for functions running in the master to directly invoke functions in a recursive context.. effectively each recursion produces a new master, from which function calls must be made.
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executing functions from __main__ entails picking just that function and deps
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out of the main module, not transferring the module intact. that approach works
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but it's much messier than just arranging for __main__ to be imported and
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executed through the import mechanism.
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supports sudo but no support for require_tty or typing a sudo password. also supports SSH and Docker.
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good set of tests
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real PEP-302 module loader, but doesn't try to cope with master also relying on
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a PEP-302 module loader (e.g. py2exe).
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unclear which versions of Python are supported, requires at least Python2.6
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(from __future__ import print_function). Unspecified versions of 3 are
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supported.
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I/O multiplexer in the master, but not in children.
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as with Execnet it includes its own serialization.
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design is reminiscent of Mitogen in places (Tunnel is practically identical to
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Mitogen's Stream), and closer to Execnet elsewhere (lack of uniformity,
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tendency to prefer logic expressed in if/else special case soup rather than the
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type system, though some of that is due to supporting Python 3, so not judging
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too harshly!)
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You should use Chopsticks if you need Python 3 support.
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Execnet
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#######
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- Parent and children may use threads, gevent, or eventlet, Mitogen only supports threads.
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- No recursion
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- Similar Channel abstraction but better developed.. includes waiting for remote to close its end
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- Heavier emphasis on passing chunks of Python source code around, modules are loaded one-at-a-time with no dependency resolution mechanism
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- Built-in unidirectional rsync-alike, compared to Mitogen's SSH emulation which allows use of real rsync in any supported mode
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- no support for sudo, but supports connecting to vagrant
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- works with read-only filesystem
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- includes its own serialization independent of the standard library, Mitogen uses cPickle.
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You should use Execnet if you value code maturity more than featureset.
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Fabric
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######
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allows execution of shell snippets on remote machines, Python functions run
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locally, any remote interaction is fundamentally done via shell, with all the
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limitations that entails. prefers to depend on SSH features (e.g. tunnelling)
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than reinvent them
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You should use Fabric if you enjoy being woken at 4am to pages about broken
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shell snippets.
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Invoke
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######
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http://www.pyinvoke.org/
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Python 2.6+, 3.3+
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Basically a Fabric-alike
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Paver
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#####
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https://github.com/paver/paver/
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More or less another task execution framework / make-alike, doesn't really deal
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with remote execution at all.
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Plumbum
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#######
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https://pypi.python.org/pypi/plumbum
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Shell-only
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Basically syntax sugar for running shell commands. Nicer than raw shell
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(depending on your opinions of operating overloading), but it's still shell.
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Pyro4
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#####
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...
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RPyC
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####
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- supports transparent object proxies similar to Pyro (with all the pain and suffering hidden network IO entails)
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- significantly more 'frameworkey' feel
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- runs multiplexer in a thread too?
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- bootstrap over SSH only, no recursion and no sudo
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- requires a writable filesystem
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To Salt
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#######
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- no crappy deps
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You should use Salt if you enjoy firefighting endless implementation bugs,
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otherwise you should prefer Ansible.
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