~loggerhead-team/loggerhead/trunk-rich

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# Copyright 2009 Canonical Ltd
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA


# This file allows loggerhead to be treated as a plugin for bzr.
#
# XXX: Because loggerhead already contains a loggerhead directory, much of the
# code is going to appear loaded at bzrlib.plugins.loggerhead.loggerhead.
# This seems like the easiest thing, because bzrlib wants the top-level plugin
# directory to be the module, but when it's used as a library people expect
# the source directory to contain a directory called loggerhead.  -- mbp
# 20090123

"""Loggerhead web viewer for Bazaar branches.

This provides a new option "--http" to the "bzr serve" command, that 
starts a web server to browse the contents of a branch.
"""

version_info = (1, 11, 0)

if __name__ == 'bzrlib.plugins.loggerhead':
    import bzrlib
    from bzrlib.api import require_any_api

    require_any_api(bzrlib, [(1, 11, 0), (1, 13, 0), (1, 15, 0)])

    # TODO: This should provide a new type of server that can be used by bzr
    # serve, maybe through a registry, rather than overriding the command.  Though
    # maybe we should keep the wrapper to work with older bzr releases, at least
    # for a bit.

    # NB: Normally plugins should lazily load almost everything, but this
    # seems reasonable to have in-line here: bzrlib.commands and options are
    # normally loaded, and the rest of loggerhead won't be loaded until serve
    # --http is run.
        
    import bzrlib.builtins
    from bzrlib.commands import get_cmd_object, register_command
    from bzrlib.option import Option

    _original_command = get_cmd_object('serve')

    DEFAULT_PORT = 8080

    class cmd_serve(bzrlib.builtins.cmd_serve):
        __doc__ = _original_command.__doc__

        takes_options = _original_command.takes_options + [
            Option('http',
                help='Run an http (Loggerhead) server to browse code, '
                    'by default on port %s.' % DEFAULT_PORT)]

        def run(self, *args, **kw):
            if 'http' in kw:
                # loggerhead internal code will try to 'import loggerhead', so
                # let's put it on the path
                import os.path, sys
                sys.path.append(os.path.dirname(__file__))

                from bzrlib.transport import get_transport
                from loggerhead.apps.transport import BranchesFromTransportRoot
                from loggerhead.config import LoggerheadConfig
                from paste.httpexceptions import HTTPExceptionHandler
                from paste.httpserver import serve
                port = kw.get('port', DEFAULT_PORT)
                # port might be an int already...
                if isinstance(port, basestring) and ':' in port:
                    host, port = port.split(':')
                else:
                    host = '0.0.0.0'
                argv = ['--host', host, '--port', str(port)]
                config = LoggerheadConfig(argv)
                transport = get_transport('.')
                app = BranchesFromTransportRoot(transport, config)
                app = HTTPExceptionHandler(app)
                serve(app, host=host, port=port)
            else:
                super(cmd_serve, self).run(*args, **kw)

    register_command(cmd_serve)