def main():
"""
This is a simple mainline that runs all worker processes
configured in the context yaml file given.
"""
from melkman.context import Context
if len(sys.argv) < 3:
print_usage()
sys.exit(0)
command_name = sys.argv[1]
yaml_file = sys.argv[-1]
import logging
log = logging.getLogger(__name__)
logging.basicConfig(level=logging.INFO)
context = Context.from_yaml(yaml_file)
all_commands = AvailableCommands(context.component_manager)
command = all_commands.lookup(command_name)
if command is None:
print_usage('unknown command: %s' % command_name)
sys.exit(0)
def user_trap(*args, **kw):
cmd = all_commands.lookup('shell')(context, [])
signal.signal(signal.SIGUSR1, user_trap)
return command(context, sys.argv[2:-1])
def test_context_bootstrap_plugins():
from giblets import Component, implements
from melkman.context import Context, IRunDuringBootstrap
class FooComponent(Component):
implements(IRunDuringBootstrap)
did_bootstrap = 0
def bootstrap(self, context, purge=False):
FooComponent.did_bootstrap += 1
config = {
'plugins': [{'pattern': "test_context.FooComponent", "enabled": True}]
}
ctx = Context.from_dict(config, defaults=Context.from_yaml(test_yaml_file()).config)
with ctx:
ctx.bootstrap(purge=False)
assert FooComponent.did_bootstrap == 1
def test_context_components():
from giblets import Component, implements, ExtensionInterface, ExtensionPoint
from melkman.context import Context, IContextConfigurable
class IBaz(ExtensionInterface):
pass
class FooComponent(Component):
implements(IContextConfigurable, IBaz)
def set_context(self, context):
self.context = context
class BarComponent(Component):
implements(IContextConfigurable, IBaz)
def set_context(self, context):
self.context = context
class BazHolder(Component):
bazoo = ExtensionPoint(IBaz)
config = """
{
"plugins": [
{"pattern": "test_context.FooComponent", "enabled": true},
{"pattern": "test_context.BarComponent", "enabled": false},
{"pattern": "test_context.BazHolder", "enabled": true}]
}
"""
ctx = Context.from_json(config)
with ctx:
bazer = BazHolder(ctx.component_manager)
# check that only the enabled components came through
assert len(bazer.bazoo) == 1
assert isinstance(bazer.bazoo[0], FooComponent)
# check that the component was configured with the context
assert bazer.bazoo[0].context == ctx
def fresh_context():
ctx = Context.from_yaml(test_yaml_file())
ctx.bootstrap(purge=True)
return ctx
from pylons import config from melkman.context import Context context = Context.from_yaml(config['melkman.yamlconfig'])