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add event messages

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This commit is contained in:
Emmanuel Garette 2019-11-28 16:51:56 +01:00
parent 1c7a8b7417
commit 0c642564d7
8 changed files with 285 additions and 76 deletions
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0
messages/v1/messages/old/config.configuration.server.updated.yml → messages/v1/messages/config.configuration.server.updated.yml
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2
src/risotto/config.py
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@ -1,3 +1,3 @@
HTTP_PORT = 8080
MESSAGE_ROOT_PATH = 'messages'
DEBUG = True
DEBUG = False

25
src/risotto/controller.py
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@ -1,7 +1,28 @@
from .dispatcher import dispatcher
from .context import Context
class Controller:
async def call(self, uri, risotto_context, **kwargs):
"""Common controller used to add a service in Risotto
"""
async def call(self,
uri: str,
risotto_context: Context,
**kwargs):
""" a wrapper to dispatcher's call"""
version, uri = uri.split('.', 1)
return await dispatcher.call(version, uri, risotto_context, **kwargs)
return await dispatcher.call(version,
uri,
risotto_context,
**kwargs)
async def publish(self,
uri: str,
risotto_context: Context,
**kwargs):
""" a wrapper to dispatcher's publish"""
version, uri = uri.split('.', 1)
await dispatcher.publish(version,
uri,
risotto_context,
**kwargs)

265
src/risotto/dispatcher.py
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@ -2,6 +2,7 @@ from tiramisu import Config
from inspect import signature
from traceback import print_exc
from copy import copy
from typing import Dict
from .utils import undefined, _
from .error import RegistrationError, CallError, NotAllowedError
@ -13,25 +14,15 @@ from .context import Context
def register(uri: str,
notification: str=undefined):
""" Decorator to register function to the dispatcher
"""
version, uri = uri.split('.', 1)
def decorator(function):
dispatcher.set_function(version, uri, function)
return decorator
class URI:
def __init__(self, ):
self.functions = {}
class Dispatcher:
def __init__(self):
self.modules = {}
self.uris = {}
self.function_names = {}
self.messages, self.option = get_messages()
config = Config(self.option)
class RegisterDispatcher:
def get_function_args(self, function):
# remove self
first_argument_index = 1
@ -50,15 +41,21 @@ class Dispatcher:
subconfig = config.option(uri)
return set(config.option(uri).value.dict().keys())
def get_function_args():
function_args = self.get_function_args(function)
# risotto_context is a special argument, remove it
if function_args[0] == 'risotto_context':
function_args = function_args[1:]
return set(function_args)
# get message arguments
message_args = get_message_args()
# get function arguments
function_args = get_function_args()
# compare message arguments with function parameter
# it must not have more or less arguments
message_args = get_message_args()
function_args = self.get_function_args(function)
# risotto_context is a special argument, remove it
if function_args[0] == 'risotto_context':
function_args = function_args[1:]
function_args = set(function_args)
if message_args != function_args:
# raise if arguments are not equal
msg = []
missing_function_args = message_args - function_args
if missing_function_args:
@ -70,7 +67,38 @@ class Dispatcher:
msg = _(' and ').join(msg)
raise RegistrationError(_(f'error with {module_name}.{function_name} arguments: {msg}'))
def _valid_event_params(self, version, uri, function, module_name):
""" parameters function validation for event messages
"""
def get_message_args():
# load config
config = Config(self.option)
config.property.read_write()
# set message to the uri name
config.option('message').value.set(uri)
# get message argument
subconfig = config.option(uri)
return set(config.option(uri).value.dict().keys())
def get_function_args():
function_args = self.get_function_args(function)
# risotto_context is a special argument, remove it
if function_args[0] == 'risotto_context':
function_args = function_args[1:]
return set(function_args)
# get message arguments
message_args = get_message_args()
# get function arguments
function_args = get_function_args()
# compare message arguments with function parameter
# it can have less arguments but not more
extra_function_args = function_args - message_args
if extra_function_args:
# raise if too many arguments
function_name = function.__name__
msg = _(f'extra arguments: {extra_function_args}')
raise RegistrationError(_(f'error with {module_name}.{function_name} arguments: {msg}'))
def set_function(self, version, uri, function):
""" register a function to an URI
@ -89,15 +117,10 @@ class Dispatcher:
except AttributeError:
raise RegistrationError(_(f'{uri} is not a valid message'))
# check if a function is already register for this uri
# create an uris' version if needed
if version not in self.uris:
self.uris[version] = {}
self.function_names[version] = {}
if uri in self.uris[version]:
raise RegistrationError(_(f'uri {uri} already imported'))
# valid function's arguements
self._valid_rpc_params(version, uri, function, module_name)
# valid function is unique per module
if module_name not in self.function_names[version]:
@ -108,15 +131,37 @@ class Dispatcher:
self.function_names[version][module_name].append(function_name)
# True if first argument is the risotto_context
inject_risotto_context = self.get_function_args(function)[0] == 'risotto_context'
function_args = self.get_function_args(function)
if function_args[0] == 'risotto_context':
inject_risotto_context = True
function_args.pop(0)
else:
inject_risotto_context = False
# register this function
self.uris[version][uri] = {'module': module_name,
'function': function,
'risotto_context': inject_risotto_context}
if self.messages[uri]['pattern'] == 'rpc':
# check if a RPC function is already register for this uri
if uri in self.uris[version]:
raise RegistrationError(_(f'uri {uri} already registered'))
# valid function's arguments
self._valid_rpc_params(version, uri, function, module_name)
# register this function
self.uris[version][uri] = {'module': module_name,
'function': function,
'risotto_context': inject_risotto_context}
else:
# if event
# valid function's arguments
self._valid_event_params(version, uri, function, module_name)
# register this function
if uri not in self.uris[version]:
self.uris[version][uri] = []
self.uris[version][uri].append({'module': module_name,
'function': function,
'arguments': function_args,
'risotto_context': inject_risotto_context})
def set_module(self, module_name, module):
""" register a new module
""" register and instanciate a new module
"""
try:
self.modules[module_name] = module.Risotto()
@ -131,33 +176,96 @@ class Dispatcher:
if missing_messages:
raise RegistrationError(_(f'missing uri {missing_messages}'))
class Dispatcher(RegisterDispatcher):
""" Manage message (call or publish)
so launch a function when a message is called
"""
def __init__(self):
self.modules = {}
self.uris = {}
self.function_names = {}
self.messages, self.option = get_messages()
config = Config(self.option)
def new_context(self,
context: Context,
version: str,
uri: str):
new_context = Context()
new_context.paths = copy(context.paths)
new_context.paths.append(version + '.' + uri)
new_context.username = context.username
return new_context
def check_public_function(self,
version: str
uri: str,
context: Context,
kwargs: Dict,
public_only: bool):
if public_only and not self.messages[uri]['public']:
msg = _(f'the message {version}.{uri} is private')
log.error_msg(version, uri, context, kwargs, 'call', msg)
raise NotAllowedError(msg)
def check_pattern(self,
version: str
uri: str,
type: str,
context: Context,
kwargs: Dict):
if self.messages[uri]['pattern'] != type:
msg = _(f'{version}.{uri} is not a {type} message')
log.error_msg(version, uri, context, kwargs, 'call', msg)
raise CallError(msg)
def set_config(self,
uri: str,
kwargs: Dict):
""" create a new Config et set values to it
"""
# create a new config
config = Config(self.option)
config.property.read_write()
# set message option
config.option('message').value.set(uri)
# store values
subconfig = config.option(uri)
for key, value in kwargs.items():
try:
subconfig.option(key).value.set(value)
except AttributeError:
raise AttributeError(_(f'unknown parameter "{key}"'))
# check mandatories options
config.property.read_only()
mandatories = list(config.value.mandatory())
if mandatories:
mand = [mand.split('.')[-1] for mand in mandatories]
raise ValueError(_(f'missing parameters: {mand}'))
# return the config
return config
async def call(self, version, uri, risotto_context, public_only=False, **kwargs):
""" execute the function associate with specified uri
arguments are validate before
"""
new_context = Context()
new_context.paths = copy(risotto_context.paths)
new_context.paths.append(version + '.' + uri)
new_context.username = risotto_context.username
if public_only and not self.messages[uri]:
raise NotAllowedError()
new_context = self.new_context(risotto_context,
version,
uri)
self.check_public_function(version,
uri,
new_context,
kwargs,
public_only)
self.check_pattern(version,
uri,
'rpc',
new_context,
kwargs)
try:
config = Config(self.option)
config.property.read_write()
config.option('message').value.set(uri)
subconfig = config.option(uri)
for key, value in kwargs.items():
try:
subconfig.option(key).value.set(value)
except ValueError as err:
raise ValueError(str(err))
except AttributeError:
raise AttributeError(_(f'unknown parameter "{key}"'))
config.property.read_only()
mandatories = list(config.value.mandatory())
if mandatories:
mand = [mand.split('.')[-1] for mand in mandatories]
raise ValueError(_(f'missing parameters: {mand}'))
config = self.set_config(uri,
kwargs)
obj = self.uris[version][uri]
kw = config.option(uri).value.dict()
if obj['risotto_context']:
@ -168,11 +276,58 @@ class Dispatcher:
except Exception as err:
if DEBUG:
print_exc()
log.error_msg(version, uri, new_context, kwargs, err)
log.error_msg(version, uri, new_context, kwargs, 'call', err)
raise CallError(str(err))
log.info_msg(version, uri, new_context, kwargs, returns)
log.info_msg(version, uri, new_context, kwargs, 'call', _(f'returns {returns}'))
return returns
async def publish(self, version, uri, risotto_context, public_only=False, **kwargs):
new_context = self.new_context(risotto_context,
version,
uri)
self.check_pattern(version,
uri,
'event',
new_context,
kwargs)
try:
config = self.set_config(uri,
kwargs)
config_arguments = config.option(uri).value.dict()
except CallError as err:
return
except Exception as err:
# if there is a problem with arguments, just send an error et do nothing
if DEBUG:
print_exc()
log.error_msg(version, uri, new_context, kwargs, 'publish', err)
return
# config is ok, so publish the message
for function_obj in self.uris[version][uri]:
function = function_obj['function']
module_name = function.__module__.split('.')[-2]
function_name = function.__name__
info_msg = _(f'in module {module_name}.{function_name}')
try:
# build argument for this function
kw = {}
for key, value in config_arguments.items():
if key in function_obj['arguments']:
kw[key] = value
if function_obj['risotto_context']:
kw['risotto_context'] = new_context
# send event
await function(self.modules[function_obj['module']], **kw)
except Exception as err:
if DEBUG:
print_exc()
log.error_msg(version, uri, new_context, kwargs, 'publish', err, info_msg)
else:
module_name = function.__module__.split('.')[-2]
function_name = function.__name__
log.info_msg(version, uri, new_context, kwargs,'publish', info_msg)
dispatcher = Dispatcher()

17
src/risotto/http.py
View File

@ -10,18 +10,24 @@ async def handle(request):
context = Context()
context.username = request.match_info.get('username', "Anonymous")
try:
text = await dispatcher.call(version, uri, context, id=2, public_only=True)
text = await dispatcher.call(version,
uri,
context,
# FIXME
id=2,
public_only=True)
except NotAllowedError as err:
raise HTTPNotFound(reason=_(f'the message {version}.{uri} is private'))
raise HTTPNotFound(reason=str(err))
except CallError as err:
raise HTTPBadRequest(reason=str(err))
except Exception as err:
raise HTTPInternalServerError(reason=str(err))
return Response(text=str(text))
def get_app():
""" build all routes
"""
app = Application()
routes = []
uris = list(dispatcher.uris.items())
@ -31,10 +37,11 @@ def get_app():
print(_('======== Registered messages ========'))
for uri in uris:
web_uri = f'/{version}/{uri}'
if dispatcher.messages[uri]:
if dispatcher.messages[uri]['public']:
print(f' - {web_uri}')
else:
print(f' - {web_uri} (private)')
pattern = dispatcher.messages[uri]['pattern']
print(f' - {web_uri} (private {pattern})')
routes.append(get(web_uri, handle))
print()
app.add_routes(routes)

42
src/risotto/logger.py
View File

@ -1,23 +1,47 @@
from typing import Dict
from .context import Context
from .utils import _
class Logger:
def _get_message_paths(self, risotto_context):
""" An object to manager log
FIXME should add event to a database
"""
def _get_message_paths(self,
risotto_context: Context,
type: str):
paths = risotto_context.paths
if len(paths) == 1:
paths_msg = f'messages called: {paths[0]}'
paths_msg = f'messages {type}ed: {paths[0]}'
else:
paths_msg = f'sub-messages called: '
paths_msg = f'sub-messages {type}ed: '
paths_msg += ' > '.join(paths)
return paths_msg
def error_msg(self, version, message, risotto_context, arguments, error):
paths_msg = self._get_message_paths(risotto_context)
print(_(f'{risotto_context.username}: {error} ({paths_msg} with arguments "{arguments}")'))
def error_msg(self,
version: 'str',
message: 'str',
risotto_context: Context,
arguments,
type: str,
error: str,
msg: str=''):
""" send message when an error append
"""
paths_msg = self._get_message_paths(risotto_context, type)
print(_(f'{risotto_context.username}: ERROR: {error} ({paths_msg} with arguments "{arguments}" {msg})'))
def info_msg(self, version, message, risotto_context, arguments, returns):
paths_msg = self._get_message_paths(risotto_context)
print(_(f'{risotto_context.username}: {paths_msg} with arguments "{arguments}" returns {returns}'))
def info_msg(self,
version: 'str',
message: 'str',
risotto_context: Context,
arguments: Dict,
type: str,
msg: str=''):
""" send message with common information
"""
paths_msg = self._get_message_paths(risotto_context, type)
print(_(f'{risotto_context.username}: INFO: {paths_msg} with arguments "{arguments}" {msg}'))
log = Logger()

3
src/risotto/message/message.py
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@ -584,7 +584,8 @@ def get_messages(load_shortarg=False, only_public=False):
if message_def.pattern not in ['rpc', 'event'] or \
(not message_def.public and only_public):
continue
optiondescriptions_info[message_def.uri] = message_def.public
optiondescriptions_info[message_def.uri] = {'pattern': message_def.pattern,
'public': message_def.public}
version = message_name.split('.')[0]
if message_def.uri in responses:
raise Exception('uri {} allready loader'.format(message_def.uri))

7
src/risotto/services/config/config.py
View File

@ -3,13 +3,14 @@ from ...dispatcher import register
class Risotto(Controller):
# @register('v1.config.created')
async def server_created(self, serverid, servername, servermodelid):
print('pouet')
@register('v1.config.configuration.server.updated')
async def server_created(self, server_id):
print('pouet ' + str(server_id))
@register('v1.config.session.server.start', None)
async def get_configuration(self, risotto_context, id):
stop = await self.call('v1.config.session.server.stop', risotto_context, sessionid=str(id))
await self.publish('v1.config.configuration.server.updated', risotto_context, server_id=1, deploy=True)
return {'start': id}
@register('v1.config.session.server.stop', None)