init project

1 year ago · bcf32df44f
commit bcf32df44f
26 changed files with 2155 additions and 0 deletions
--- a/.gitignore
+++ b/.gitignore
@ -0,0 +1,160 @@
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
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+lib64/
+parts/
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+var/
+wheels/
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+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
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+
+# Installer logs
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+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
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+coverage.xml
+*.cover
+*.py,cover
+.hypothesis/
+.pytest_cache/
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+
+# Translations
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+# Django stuff:
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+db.sqlite3
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+
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+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
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+.pdm.toml
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+
+# Celery stuff
+celerybeat-schedule
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+# SageMath parsed files
+*.sage.py
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+# Environments
+.env
+.venv
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+/site
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+.dmypy.json
+dmypy.json
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+#  option (not recommended) you can uncomment the following to ignore the entire idea folder.
+.idea/
--- a/21
+++ b/21
@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2023 JimZhang <zzl22100048@gmail.com> (https://www.loom.run)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
--- a/README.md
+++ b/README.md
@ -0,0 +1,65 @@
+# Busrt Worker
+> `BUS/RT`是一个快速、灵活且非常易于使用的框架，它使用Rust/Tokio编写，受到NATS、ZeroMQ和Nanomsg的启发。
+
+Busrt Worker是一个基于busrt消息中间件的异步框架，它对Python库进行了封装，使其更易于使用。
+
+
+## 特点
+
+- 异步：Busrt Worker基于python asyncio异步引擎，可以轻松处理高并发请求。
+- 易用性：Busrt Worker对原生的busrt python客户端进行了封装，使用装饰器即可轻松创建rpc服务。
+- 高性能：BUS/RT 使用Rust/Tokio编写，具有出色的性能和可靠性。
+
+## 用法
+
+要使用Busrt Worker，请按照以下步骤操作：
+
+1. 安装Busrt Worker：`pip install busrt-worker`
+2. 导入Busrt Worker：在您的Python项目中导入Busrt Worker。
+3. 创建Busrt Worker App：创建一个App对象，并注册连接信息。
+4. 处理消息：使用装饰器指明消息处理方式。
+
+以下是一个示例代码片段，演示如何使用Busrt Worker：
+
+```python
+import asyncio
+
+from loguru import logger
+
+from busrtworker import App, ConnectionInfo
+# 创建 App对象
+app = App()
+
+# 连接信息
+api_ci = ConnectionInfo('api', 'localhost:9800', 'busrt.worker.test', static=True, topic='test/#')
+caller_ci = ConnectionInfo('caller', 'localhost:9800', 'busrt.worker.test', static=True)
+
+# 注册连接
+api = app.registry(api_ci)
+app.registry(caller_ci)
+
+# rpc调用
+@api.on_call()
+def add(a, b):
+    return a + b
+
+# 主题订阅
+@api.subscribe('test/:name')
+def print_name(name: str):
+    logger.info(f'{name} pub message')
+
+# 钩子函数注册
+@app.run_on_startup
+async def test(server):
+    async def call():
+        await asyncio.sleep(1)
+        logger.info(f'call remote add result {(await app.caller.add(api_ci.final_name,a=1, b=2))}')
+        await app.caller.send('test/i_am_caller')
+    asyncio.create_task(call())
+
+# 启动程序
+app.run()
+```
+
+## License
+The MIT License.
--- a/busrtworker/init.py
+++ b/busrtworker/init.py
@ -0,0 +1,2 @@
+from .app import App,ConnectionInfo
+
--- a/busrtworker/app.py
+++ b/busrtworker/app.py
@ -0,0 +1,277 @@
+import abc
+import asyncio
+import dataclasses
+import functools
+import signal
+from collections import UserList
+from enum import Enum, auto
+from typing import Callable, Coroutine, Dict, List, Optional
+
+from loguru import logger
+
+from busrtworker.boostrap import RpcBoot
+from busrtworker.busrt import OP_PUBLISH, Client, Frame, Rpc, serialize
+from busrtworker.scheduler import ScheduledTaskRunner
+from busrtworker.tree import RadixTree
+
+
+@dataclasses.dataclass
+class ConnectionInfo:
+    name: str = dataclasses.field()
+    uri: str = dataclasses.field()
+    client_prefix: str = dataclasses.field()
+    static: bool = dataclasses.field()
+    topic: str | None = dataclasses.field(default=None)
+    init_rpc: bool = dataclasses.field(default=True)
+    bus: Client = dataclasses.field(default=None, init=False)
+    rpc: Rpc = dataclasses.field(default=None, init=False)
+    final_name: str = dataclasses.field(default=None, init=False)
+
+    def __getattr__(self, item):
+        if not self.init_rpc:
+            raise ValueError('must be init rpc client could call')
+        return getattr(self.rpc, item)
+
+    async def send(self, topic, data=None, decode=True):
+        bus: Client = self.bus
+        await bus.send(topic, Frame(serialize(data) if decode else data, tp=OP_PUBLISH))
+
+
+class Router:
+    table: dict = {}
+    tree: RadixTree = RadixTree()
+
+    def insert(self, path, handler, dynamic=False):
+        if not dynamic:
+            if path in self.table:
+                raise ValueError(f'conflict route {path}')
+            self.table[path] = handler
+        else:
+            self.tree.insert(path, handler, ['RPC'])
+
+    def get(self, path):
+        if path in self.table:
+            return True, self.table[path], {}
+        return self.tree.get(path, 'RPC')
+
+
+class ServiceEntrypoint:
+    def __init__(self, connection: ConnectionInfo, app: 'App'):
+        self.name = connection.name
+        self.app = app
+        if self.name not in self.app.callers:
+            self.app.callers[self.name] = {}
+        if self.name not in self.app.subscribes:
+            self.app.subscribes[self.name] = Router()
+
+    def on_call(self, method=None, auto_decode=True, raw=False):
+        def _warp(f):
+            target = method or (f.func.__name__ if isinstance(f, functools.partial) else f.__name__)
+            self.app.callers[self.name][target] = (f, auto_decode, asyncio.iscoroutinefunction(f), raw)
+            return f
+
+        return _warp
+
+    def subscribe(self, topic, auto_decode=True, raw=False):
+        assert isinstance(topic, str), 'topic must be str or callable'
+
+        def _warp(f):
+            self.app.subscribes[self.name].insert(topic, (f, auto_decode, asyncio.iscoroutinefunction(f), raw),
+                                                  '/:' in topic)
+            return f
+
+        return _warp
+
+
+class Freezable(metaclass=abc.ABCMeta):
+    def __init__(self):
+        self._frozen = False
+
+    @property
+    def frozen(self) -> bool:
+        return self._frozen
+
+    async def freeze(self):
+        self._frozen = True
+
+
+class Signal(UserList, asyncio.Event):
+    """
+    Coroutine-based signal implementation tha behaves as an `asyncio.Event`.
+
+    To connect a callback to a signal, use any list method.
+
+    Signals are fired using the send() coroutine, which takes named
+    arguments.
+    """
+
+    def __init__(self, owner: Freezable) -> None:
+        UserList.__init__(self)
+        asyncio.Event.__init__(self)
+        self._owner = owner
+        self.frozen = False
+
+    def __repr__(self):
+        return "<Signal owner={}, frozen={}, {!r}>".format(
+            self._owner, self.frozen, list(self)
+        )
+
+    async def send(self, *args, **kwargs):
+        """
+        Sends data to all registered receivers.
+        """
+        if self.frozen:
+            raise RuntimeError("Cannot send on frozen signal.")
+
+        for receiver in self:
+            await receiver(*args, **kwargs)
+
+        self.frozen = True
+        await self._owner.freeze()
+        self.set()
+
+
+async def on_frame_default(app, frame):
+    logger.opt(lazy=True).debug('{x}',
+                                x=lambda: f"default print 'Frame:', {hex(frame.type)}, frame.sender, frame.topic, frame.payload")
+
+
+async def on_call_default(app, event):
+    logger.opt(lazy=True).debug('{x}',
+                                x=lambda: f"default print 'Rpc:', {event.frame.sender}, {event.method}, {event.get_payload()}")
+
+
+def entrypoint(f):
+    @functools.wraps(f)
+    def _(*args, **kwargs):
+        try:
+            loop = asyncio.get_event_loop()
+            return loop.run_until_complete(f(*args, **kwargs))
+        except KeyboardInterrupt:
+            pass
+
+    return _
+
+
+class AutoNameEnum(str, Enum):
+    def _generate_next_value_(  # type: ignore
+            name: str, start: int, count: int, last_values: List[str]
+    ) -> str:
+        return name.lower()
+
+
+class Options(AutoNameEnum):
+    MAX_CONCURRENCY = auto()
+
+
+class DefaultValues:
+    RUN_EVERY_MAX_CONCURRENCY = 1
+
+
+class App(Freezable):
+    callers: dict[str, callable] = {}
+    subscribes: dict[str, Router] = {}
+    connections: Dict[str, ConnectionInfo] = {}
+    closeable = []
+    on_frame_default: callable = on_frame_default
+    on_call_default: callable = on_call_default
+    task_runners = []
+
+    def __init__(self):
+        Freezable.__init__(self)
+        self.boot = RpcBoot()
+        self._on_startup: Signal = Signal(self)
+        self._on_shutdown: Signal = Signal(self)
+        self._on_startup.append(self.boot.startup)
+        self._on_shutdown.append(self.boot.shutdown)
+        signal.signal(signal.SIGINT, self.shutdown)
+        signal.signal(signal.SIGTERM, self.shutdown)
+
+    def registry(self, connection: ConnectionInfo):
+        if self.frozen:
+            raise RuntimeError(
+                "You shouldn't change the state of a started application"
+            )
+        self.connections[connection.name] = connection
+        return ServiceEntrypoint(connection, self)
+
+    def set_on_frame_default(self, on_frame: callable):
+        self.on_frame_default = on_frame
+
+    def set_on_call_default(self, on_call: callable):
+        self.on_call_default = on_call
+
+    @entrypoint
+    async def run(self):
+        if self.frozen:
+            raise RuntimeError(
+                "You shouldn't change the state of a started application"
+            )
+        logger.debug({"event": "Booting App..."})
+        await self.startup()
+
+        await self._on_shutdown.wait()
+
+    async def startup(self):
+        """
+        Causes on_startup signal
+
+        Should be called in the event loop along with the request handler.
+        """
+        await self._on_startup.send(self)
+
+    def shutdown(self, *args) -> asyncio.Future:
+        """
+        Schedules an on_startup signal
+
+        Is called automatically when the application receives
+        a SIGINT or SIGTERM
+        """
+        logger.debug('do shutdown')
+        return asyncio.ensure_future(self._on_shutdown.send(self))
+
+    def run_on_startup(self, coro: Callable[["App"], Coroutine]) -> None:
+        """
+        Registers a coroutine to be awaited for during app startup
+        """
+        self._on_startup.append(coro)
+
+    def run_on_shutdown(self, coro: Callable[["App"], Coroutine]) -> None:
+        """
+        Registers a coroutine to be awaited for during app shutdown
+        """
+        self._on_shutdown.append(coro)
+
+    def __getattr__(self, name):
+        return self.connections[name]
+
+    def run_every(self, seconds: int, options: Optional[Dict] = None):
+        """
+        Registers a coroutine to be called with a given interval
+        """
+        if options is None:
+            options = {}
+
+        max_concurrency = options.get(
+            Options.MAX_CONCURRENCY, DefaultValues.RUN_EVERY_MAX_CONCURRENCY
+        )
+
+        def wrapper(task: Callable[..., Coroutine]):
+            runner = ScheduledTaskRunner(
+                seconds=seconds,
+                task=task,
+                max_concurrency=max_concurrency,
+            )
+            self._on_startup.append(runner.start)
+            self._on_shutdown.append(runner.stop)
+            self.task_runners.append(runner)
+
+            return task
+
+        return wrapper
+
+    def rpc_running(self, name):
+        if connection := self.connections.get(name, None):
+            if rpc := connection.rpc:
+                return rpc.is_connected()
+        return False
--- a/busrtworker/boostrap.py
+++ b/busrtworker/boostrap.py
@ -0,0 +1,95 @@
+import asyncio
+import functools
+import os
+import traceback
+from typing import TYPE_CHECKING
+
+from .busrt import Client, Rpc, RpcException, deserialize, on_frame_default, serialize
+
+if TYPE_CHECKING:  # pragma: no cover
+    from .app import App  # noqa: F401
+
+
+class RpcBoot:
+    async def startup(self, app: 'App'):
+        for i, (name, connection) in enumerate(app.connections.items()):
+            uri = connection.uri
+            static = connection.static
+            init_rpc = connection.init_rpc
+            prefix = connection.client_prefix
+            topic = connection.topic
+            connection.final_name = f'{prefix}.{name}' if static else f'{prefix}.{os.urandom(4).hex()}'
+            bus = Client(uri, connection.final_name)
+            connection.bus = bus
+
+            app.closeable.append(bus.disconnect)
+            await bus.connect()
+            if topic:
+                await bus.subscribe(topic)
+
+                async def on_frame(frame, router):
+                    success, route, params = router.get(frame.topic)
+                    if not success:
+                        return await app.on_frame_default(frame)
+                    else:
+                        func, auto_decode, is_async, raw = route
+                        if auto_decode:
+                            payload = deserialize(frame.payload)
+                            if raw:
+                                payload['frame'] = frame
+                            if is_async:
+                                return await func(**payload, **params)
+                            return func(**payload, **params)
+                        else:
+                            if is_async:
+                                return await func(frame, **params)
+                            return func(frame, **params)
+
+                on_frame_func = functools.partial(on_frame, router=app.subscribes.get(name, None))
+            else:
+                on_frame_func = on_frame_default
+            if init_rpc:
+
+                async def on_call(event, caller):
+                    try:
+                        method = event.method.decode('utf-8')
+                        caller_tuple = caller.get(method, None)
+                        if not caller_tuple:
+                            return serialize(await app.on_call_default(event))
+                        call, auto_decode, is_async, raw = caller_tuple
+                        if auto_decode:
+                            payload = deserialize(event.get_payload())
+                            if raw:
+                                payload['event'] = event
+                            if is_async:
+                                return serialize(await call(**payload))
+                            return serialize(call(**payload))
+                        else:
+                            if is_async:
+                                return serialize(await call(event))
+                            return serialize(call(event))
+                    except Exception as e:
+                        traceback.print_exc()
+                        raise RpcException(str(e), 11)
+
+                rpc_client = Rpc(bus)
+                connection.rpc = rpc_client
+                if topic:
+                    rpc_client.on_frame = functools.partial(on_frame_func, router=app.subscribes.get(name, None))
+                rpc_client.on_call = functools.partial(on_call, caller=app.callers.get(name, None))
+            elif topic:
+                bus.on_frame = functools.partial(on_frame_func, router=app.subscribes.get(name, None))
+
+    async def shutdown(self, app: 'App'):
+        gathers = []
+
+        for func in app.closeable:
+            if asyncio.iscoroutinefunction(func):
+                gathers.append(func())
+            else:
+                try:
+                    func()
+                except:
+                    traceback.print_exc()
+        if gathers:
+            await asyncio.gather(*gathers, return_exceptions=True)
--- a/busrtworker/busrt/init.py
+++ b/busrtworker/busrt/init.py
@ -0,0 +1,3 @@
+from .busrt_client import * # noqa: F403
+from .busrt_rpc import * # noqa: F403
+from .msgutils import * # noqa: F403
--- a/busrtworker/busrt/busrt_client.py
+++ b/busrtworker/busrt/busrt_client.py
@ -0,0 +1,274 @@
+import asyncio
+from loguru import logger
+
+GREETINGS = 0xEB
+
+PROTOCOL_VERSION = 1
+
+OP_NOP = 0
+OP_PUBLISH = 1
+OP_SUBSCRIBE = 2
+OP_UNSUBSCRIBE = 3
+OP_MESSAGE = 0x12
+OP_BROADCAST = 0x13
+OP_ACK = 0xFE
+
+RESPONSE_OK = 0x01
+ERR_CLIENT_NOT_REGISTERED = 0x71
+ERR_DATA = 0x72
+ERR_IO = 0x73
+ERR_OTHER = 0x74
+ERR_NOT_SUPPORTED = 0x75
+ERR_BUSY = 0x76
+ERR_NOT_DELIVERED = 0x77
+ERR_TIMEOUT = 0x78
+
+PING_FRAME = b'\x00' * 9
+
+
+async def on_frame_default(frame):
+    pass
+
+
+class Client:
+
+    def __init__(self, path, name):
+        self.path = path
+        self.writer = None
+        self.reader_fut = None
+        self.pinger_fut = None
+        self.buf_size = 8192
+        self.name = name
+        self.frame_id = 0
+        self.ping_interval = 1
+        self.on_frame = on_frame_default
+        self.socket_lock = asyncio.Lock()
+        self.mgmt_lock = asyncio.Lock()
+        self.connected = False
+        self.frames = {}
+        self.timeout = 1
+
+    async def connect(self):
+        async with self.mgmt_lock:
+            if self.path.endswith('.sock') or self.path.endswith(
+                    '.socket') or self.path.endswith(
+                '.ipc') or self.path.startswith('/'):
+                if hasattr(asyncio, 'open_unix_connection'):
+                    reader, writer = await asyncio.open_unix_connection(
+                        self.path, limit=self.buf_size)
+                else:
+                    raise ValueError('only support unix like system')
+            else:
+                host, port = self.path.rsplit(':', maxsplit=2)
+                reader, writer = await asyncio.open_connection(
+                    host, int(port), limit=self.buf_size)
+            buf = await asyncio.wait_for(self.readexactly(reader, 3),
+                                         timeout=self.timeout)
+            if buf[0] != GREETINGS:
+                raise RuntimeError('Unsupported protocol')
+            if int.from_bytes(buf[1:3], 'little') != PROTOCOL_VERSION:
+                raise RuntimeError('Unsupported protocol version')
+            writer.write(buf)
+            await asyncio.wait_for(writer.drain(), timeout=self.timeout)
+            buf = await asyncio.wait_for(self.readexactly(reader, 1),
+                                         timeout=self.timeout)
+            if buf[0] != RESPONSE_OK:
+                raise RuntimeError(f'Server response: {hex(buf[0])}')
+            name = self.name.encode()
+            writer.write(len(name).to_bytes(2, 'little') + name)
+            await asyncio.wait_for(writer.drain(), timeout=self.timeout)
+            buf = await asyncio.wait_for(self.readexactly(reader, 1),
+                                         timeout=self.timeout)
+            if buf[0] != RESPONSE_OK:
+                raise RuntimeError(f'Server response: {hex(buf[0])}')
+            self.writer = writer
+            self.connected = True
+            self.pinger_fut = asyncio.ensure_future(self._t_pinger())
+            self.reader_fut = asyncio.ensure_future(self._t_reader(reader))
+
+    async def handle_daemon_exception(self, e):
+        async with self.mgmt_lock:
+            if self.connected:
+                await self._disconnect()
+                import traceback
+                logger.error(traceback.format_exc())
+
+    async def _t_pinger(self):
+        try:
+            while True:
+                await asyncio.sleep(self.ping_interval)
+                async with self.socket_lock:
+                    self.writer.write(PING_FRAME)
+                    await asyncio.wait_for(self.writer.drain(),
+                                           timeout=self.timeout)
+        except Exception as e:
+            asyncio.ensure_future(self.handle_daemon_exception(e))
+
+    async def _t_reader(self, reader):
+        try:
+            while True:
+                buf = await self.readexactly(reader, 6)
+                if buf[0] == OP_NOP:
+                    continue
+                elif buf[0] == OP_ACK:
+                    op_id = int.from_bytes(buf[1:5], 'little')
+                    try:
+                        o = self.frames.pop(op_id)
+                        o.result = buf[5]
+                        o.completed.set()
+                    except KeyError:
+                        logger.warning(f'orphaned BUS/RT frame ack {op_id}')
+                else:
+
+                    async def read_frame(tp, data_len):
+                        frame = Frame()
+                        frame.type = tp
+                        sender = await reader.readuntil(b'\x00')
+                        data_len -= len(sender)
+                        frame.sender = sender[:-1].decode()
+                        if buf[0] == OP_PUBLISH:
+                            topic = await reader.readuntil(b'\x00')
+                            data_len -= len(topic)
+                            frame.topic = topic[:-1].decode()
+                        else:
+                            frame.topic = None
+                        data = b''
+                        while len(data) < data_len:
+                            buf_size = data_len - len(data)
+                            len(data)
+                            try:
+                                data += await reader.readexactly(
+                                    buf_size if buf_size < self.buf_size else
+                                    self.buf_size)
+                            except asyncio.IncompleteReadError:
+                                pass
+                        frame.payload = data
+                        return frame
+
+                    try:
+                        data_len = int.from_bytes(buf[1:5], 'little')
+                        frame = await read_frame(buf[0], data_len)
+                    except Exception as e:
+                        logger.error(f'Invalid frame from the server: {e}')
+                        raise
+                    asyncio.ensure_future(self.on_frame(frame))
+        except Exception as e:
+            asyncio.ensure_future(self.handle_daemon_exception(e))
+
+    async def readexactly(self, reader, data_len):
+        data = b''
+        while len(data) < data_len:
+            buf_size = data_len - len(data)
+            try:
+                chunk = await reader.readexactly(
+                    buf_size if buf_size < self.buf_size else self.buf_size)
+                data += chunk
+            except asyncio.IncompleteReadError:
+                await asyncio.sleep(0.01)
+        return data
+
+    async def disconnect(self):
+        async with self.mgmt_lock:
+            await self._disconnect()
+
+    async def _disconnect(self):
+        self.connected = False
+        self.writer.close()
+        if self.reader_fut is not None:
+            self.reader_fut.cancel()
+        if self.pinger_fut is not None:
+            self.pinger_fut.cancel()
+
+    async def send(self, target=None, frame=None):
+        try:
+            async with self.socket_lock:
+                self.frame_id += 1
+                if self.frame_id > 0xffff_ffff:
+                    self.frame_id = 1
+                frame_id = self.frame_id
+                o = ClientFrame(frame.qos)
+                if frame.qos & 0b1 != 0:
+                    self.frames[frame_id] = o
+                flags = frame.type | frame.qos << 6
+                if frame.type == OP_SUBSCRIBE or frame.type == OP_UNSUBSCRIBE:
+                    topics = frame.topic if isinstance(frame.topic,
+                                                       list) else [frame.topic]
+                    payload = b'\x00'.join(t.encode() for t in topics)
+                    self.writer.write(
+                        frame_id.to_bytes(4, 'little') +
+                        flags.to_bytes(1, 'little') +
+                        len(payload).to_bytes(4, 'little') + payload)
+                else:
+                    frame_len = len(target) + len(frame.payload) + 1
+                    if frame.header is not None:
+                        frame_len += len(frame.header)
+                    if frame_len > 0xffff_ffff:
+                        raise ValueError('frame too large')
+                    self.writer.write(
+                        frame_id.to_bytes(4, 'little') +
+                        flags.to_bytes(1, 'little') +
+                        frame_len.to_bytes(4, 'little') + target.encode() +
+                        b'\x00' +
+                        (frame.header if frame.header is not None else b''))
+                    self.writer.write(frame.payload.encode(
+                    ) if isinstance(frame.payload, str) else frame.payload)
+                await self.writer.drain()
+                return o
+        except:
+            try:
+                del self.frames[frame_id]
+            except KeyError:
+                pass
+            raise
+
+    def subscribe(self, topics):
+        frame = Frame(tp=OP_SUBSCRIBE)
+        frame.topic = topics
+        return self.send(None, frame)
+
+    def unsubscribe(self, topics):
+        frame = Frame(tp=OP_UNSUBSCRIBE)
+        frame.topic = topics
+        return self.send(None, frame)
+
+    def is_connected(self):
+        return self.connected
+
+
+class ClientFrame:
+
+    def __init__(self, qos):
+        self.qos = qos
+        self.result = 0
+        if qos & 0b1 != 0:
+            self.completed = asyncio.Event()
+        else:
+            self.completed = None
+
+    def is_completed(self):
+        if self.qos & 0b1 != 0:
+            return self.completed.is_set()
+        else:
+            return True
+
+    async def wait_completed(self, timeout=None):
+        if self.qos & 0b1 == 0:
+            return RESPONSE_OK
+        elif timeout:
+            await asyncio.wait_for(self.completed.wait(), timeout=timeout)
+        else:
+            await self.completed.wait()
+        return self.result
+
+
+class Frame:
+
+    def __init__(self, payload=None, tp=OP_MESSAGE, qos=0):
+        self.payload = payload
+        # used for zero-copy
+        self.header = None
+        self.type = tp
+        self.qos = qos
+
+
+__all__ = ["Client","Frame","OP_PUBLISH","OP_MESSAGE","OP_BROADCAST","ERR_IO","ERR_TIMEOUT","RESPONSE_OK","on_frame_default"]
--- a/busrtworker/busrt/busrt_rpc.py
+++ b/busrtworker/busrt/busrt_rpc.py
@ -0,0 +1,266 @@
+import asyncio
+import functools
+
+from loguru import logger
+
+from .busrt_client import (
+    ERR_IO,
+    ERR_TIMEOUT,
+    OP_MESSAGE,
+    RESPONSE_OK,
+    on_frame_default,
+)
+from .msgutils import deserialize, serialize
+
+RPC_NOTIFICATION_HEADER = b'\x00'
+RPC_REQUEST_HEADER = b'\x01'
+RPC_REPLY_HEADER = b'\x11'
+RPC_ERROR_REPLY_HEADER = b'\x12'
+
+RPC_NOTIFICATION = 0x00
+RPC_REQUEST = 0x01
+RPC_REPLY = 0x11
+RPC_ERROR = 0x12
+
+RPC_ERROR_CODE_PARSE = -32700
+RPC_ERROR_CODE_INVALID_REQUEST = -32600
+RPC_ERROR_CODE_METHOD_NOT_FOUND = -32601
+RPC_ERROR_CODE_INVALID_METHOD_PARAMS = -32602
+RPC_ERROR_CODE_INTERNAL = -32603
+
+
+async def on_call_default(event):
+    raise RpcException('RPC Engine not initialized',
+                       RPC_ERROR_CODE_METHOD_NOT_FOUND)
+
+
+async def on_notification_default(event):
+    pass
+
+
+def format_rpc_e_msg(e):
+    if isinstance(e, RpcException):
+        return e.rpc_error_payload
+    else:
+        return str(e)
+
+
+class RpcException(Exception):
+
+    def __init__(self, msg: str | bytes = '', code=RPC_ERROR_CODE_INTERNAL):
+        self.rpc_error_code = code
+        self.rpc_error_payload = msg
+        super().__init__(msg if isinstance(msg, str) else msg.decode())
+
+    def __str__(self):
+        return super().__str__() + f' (code: {self.rpc_error_code})'
+
+
+class Rpc:
+
+    def __init__(self, client):
+        self.client = client
+        self.client.on_frame = self._handle_frame
+        self.call_id = 0
+        self.call_lock = asyncio.Lock()
+        self.calls = {}
+        self.on_frame = on_frame_default
+        self.on_call = on_call_default
+        self.on_notification = on_notification_default
+
+    def is_connected(self):
+        return self.client.connected
+
+    def notify(self, target, notification):
+        return self.client.send(target, notification)
+
+    def call0(self, target, request):
+        request.header = RPC_REQUEST_HEADER + b'\x00\x00\x00\x00' + \
+                         request.method + b'\x00'
+        return self.client.send(target, request)
+
+    async def call(self, target, request):
+        async with self.call_lock:
+            call_id = self.call_id + 1
+            if call_id == 0xffff_ffff:
+                self.call_id = 0
+            else:
+                self.call_id = call_id
+        call_event = RpcCallEvent()
+        self.calls[call_id] = call_event
+        request.header = RPC_REQUEST_HEADER + call_id.to_bytes(
+            4, 'little') + request.method + b'\x00'
+        try:
+            try:
+                code = await (await self.client.send(
+                    target,
+                    request)).wait_completed(timeout=self.client.timeout)
+                if code != RESPONSE_OK:
+                    try:
+                        del self.calls[call_id]
+                    except KeyError:
+                        pass
+                    err_code = -32000 - code
+                    call_event.error = RpcException('RPC error', code=err_code)
+                    call_event.completed.set()
+            except asyncio.TimeoutError:
+                try:
+                    del self.calls[call_id]
+                except KeyError:
+                    pass
+                err_code = -32000 - ERR_TIMEOUT
+                call_event.error = RpcException('RPC timeout', code=err_code)
+                call_event.completed.set()
+        except Exception as e:
+            try:
+                del self.calls[call_id]
+            except KeyError:
+                pass
+            call_event.error = RpcException(str(e), code=-32000 - ERR_IO)
+            call_event.completed.set()
+        return call_event
+
+    def __getattr__(self, method):
+        return functools.partial(self.params_call, method=method)
+
+    async def params_call(self, target, method: str, **kwargs):
+        params = kwargs
+        if '_raw' in kwargs:
+            params = kwargs.pop('_raw')
+        params = params or None
+        c0 = False
+        if method.endswith('0'):
+            c0 = True
+            method = method[:-1]
+        request = Request(method, serialize(params))
+        if c0:
+            await self.call0(target, request)
+            return None
+        result = await self.call(target, request)
+        return deserialize((await result.wait_completed()).get_payload())
+
+    async def _handle_frame(self, frame):
+        try:
+            if frame.type == OP_MESSAGE:
+                if frame.payload[0] == RPC_NOTIFICATION:
+                    event = Event(RPC_NOTIFICATION, frame, 1)
+                    await self.on_notification(event)
+                elif frame.payload[0] == RPC_REQUEST:
+                    sender = frame.sender
+                    call_id_b = frame.payload[1:5]
+                    call_id = int.from_bytes(call_id_b, 'little')
+                    method = frame.payload[5:5 +
+                                             frame.payload[5:].index(b'\x00')]
+                    event = Event(RPC_REQUEST, frame, 6 + len(method))
+                    event.call_id = call_id
+                    event.method = method
+                    if call_id == 0:
+                        await self.on_call(event)
+                    else:
+                        reply = Reply()
+                        try:
+                            reply.payload = await self.on_call(event)
+                            if reply.payload is None:
+                                reply.payload = b''
+                            reply.header = RPC_REPLY_HEADER + call_id_b
+                        except Exception as e:
+                            code = getattr(e, 'rpc_error_code', RPC_ERROR_CODE_INTERNAL)
+
+                            reply.header = (
+                                    RPC_ERROR_REPLY_HEADER + call_id_b +
+                                    code.to_bytes(2, 'little', signed=True))
+                            reply.payload = format_rpc_e_msg(e)
+                        await self.client.send(sender, reply)
+                elif frame.payload[0] == RPC_REPLY or frame.payload[
+                    0] == RPC_ERROR:
+                    call_id = int.from_bytes(frame.payload[1:5], 'little')
+                    try:
+                        call_event = self.calls.pop(call_id)
+                        call_event.frame = frame
+                        if frame.payload[0] == RPC_ERROR:
+                            err_code = int.from_bytes(frame.payload[5:7],
+                                                      'little',
+                                                      signed=True)
+                            call_event.error = RpcException(frame.payload[7:],
+                                                            code=err_code)
+                        call_event.completed.set()
+                    except KeyError:
+                        logger.warning(f'orphaned RPC response: {call_id}')
+                else:
+                    logger.error(f'Invalid RPC frame code: {frame.payload[0]}')
+            else:
+                await self.on_frame(frame)
+        except Exception:
+            import traceback
+            logger.error(traceback.format_exc())
+
+
+class RpcCallEvent:
+
+    def __init__(self):
+        self.frame = None
+        self.error = None
+        self.completed = asyncio.Event()
+
+    def is_completed(self):
+        return self.completed.is_set()
+
+    async def wait_completed(self, timeout=None):
+        if timeout:
+            if not await asyncio.wait_for(self.completed.wait(),
+                                          timeout=timeout):
+                raise TimeoutError
+        else:
+            await self.completed.wait()
+        if self.error is None:
+            return self
+        else:
+            raise self.error
+
+    def get_payload(self):
+        return self.frame.payload[5:]
+
+    def is_empty(self):
+        return len(self.frame.payload) <= 5
+
+
+class Event:
+
+    def __init__(self, tp, frame, payload_pos):
+        self.tp = tp
+        self.frame = frame
+        self._payload_pos = payload_pos
+
+    def get_payload(self):
+        return self.frame.payload[self._payload_pos:]
+
+
+class Notification:
+
+    def __init__(self, payload=b''):
+        self.payload = payload
+        self.type = OP_MESSAGE
+        self.qos = 1
+        self.header = RPC_NOTIFICATION_HEADER
+
+
+class Request:
+
+    def __init__(self, method, params=b''):
+        self.payload = b'' if params is None else params
+        self.type = OP_MESSAGE
+        self.qos = 1
+        self.method = method.encode() if isinstance(method, str) else method
+        self.header = None
+
+
+class Reply:
+
+    def __init__(self, result=b''):
+        self.payload = result
+        self.type = OP_MESSAGE
+        self.qos = 1
+        self.header = None
+
+
+__all__ = ["Rpc", "Request", "Reply", "RpcCallEvent", "Event", "RpcException"]
--- a/busrtworker/busrt/msgutils.py
+++ b/busrtworker/busrt/msgutils.py
@ -0,0 +1,14 @@
+import msgpack
+import zstd
+
+
+def deserialize(data):
+    if data is None:
+        return None
+    return msgpack.unpackb(zstd.decompress(data))
+
+
+def serialize(data):
+    if data is None:
+        data={}
+    return zstd.compress(msgpack.dumps(data))
--- a/busrtworker/kink/init.py
+++ b/busrtworker/kink/init.py
@ -0,0 +1,2 @@
+from .container import *
+from .inject import *
--- a/busrtworker/kink/verstion.py
+++ b/busrtworker/kink/verstion.py
@ -0,0 +1 @@
+__version__ = "0.6.6"
--- a/busrtworker/kink/container.py
+++ b/busrtworker/kink/container.py
@ -0,0 +1,97 @@
+from types import LambdaType
+from typing import Any, Callable, Dict, List, Type, Union
+
+from .errors.service_error import ServiceError
+
+_MISSING_SERVICE = object()
+
+
+class Container:
+    def __init__(self):
+        self._memoized_services: Dict[Union[str, Type], Any] = {}
+        self._services: Dict[Union[str, Type], Any] = {}
+        self._factories: Dict[Union[str, Type], Callable[[Container], Any]] = {}
+        self._aliases: Dict[Union[str, Type], List[Union[str, Type]]] = {}
+
+    def __setitem__(self, key: Union[str, Type], value: Any) -> None:
+        self._services[key] = value
+
+        if key in self._memoized_services:
+            del self._memoized_services[key]
+
+    def add_alias(self, name: Union[str, Type], target: Union[str, Type]):
+        if List[target] in self._memoized_services:  # type: ignore
+            del self._memoized_services[List[target]]  # type: ignore
+
+        if name not in self._aliases:
+            self._aliases[name] = []
+        self._aliases[name].append(target)
+
+    def __getitem__(self, key: Union[str, Type]) -> Any:
+        if key in self._factories:
+            return self._factories[key](self)
+
+        service = self._get(key)
+
+        if service is not _MISSING_SERVICE:
+            return service
+
+        if key in self._aliases:
+            unaliased_key = self._aliases[key][0]  # By default return first aliased service
+            if unaliased_key in self._factories:
+                return self._factories[unaliased_key](self)
+            service = self._get(unaliased_key)
+        # service = self._get(self._aliases[key][0])  # By default return first aliased service
+
+        if service is not _MISSING_SERVICE:
+            return service
+
+        # Support aliasing
+        if self._has_alias_list_for(key):
+            result = [self._get(alias) for alias in self._aliases[key.__args__[0]]]  # type: ignore
+            self._memoized_services[key] = result
+            return result
+
+        raise ServiceError(f"Service {key} is not registered.")
+
+    def _get(self, key: Union[str, Type]) -> Any:
+        if key in self._memoized_services:
+            return self._memoized_services[key]
+
+        if key not in self._services:
+            return _MISSING_SERVICE
+
+        value = self._services[key]
+
+        if isinstance(value, LambdaType) and value.__name__ == "<lambda>":
+            self._memoized_services[key] = value(self)
+            return self._memoized_services[key]
+
+        return value
+
+    def __contains__(self, key) -> bool:
+        contains = key in self._services or key in self._factories or key in self._aliases
+
+        if contains:
+            return contains
+
+        if self._has_alias_list_for(key):
+            return True
+
+        return False
+
+    def _has_alias_list_for(self, key: Union[str, Type]) -> bool:
+        return hasattr(key, "__origin__") and hasattr(key, "__args__") and key.__origin__ == list and key.__args__[0] in self._aliases  # type: ignore
+
+    @property
+    def factories(self) -> Dict[Union[str, Type], Callable[["Container"], Any]]:
+        return self._factories
+
+    def clear_cache(self) -> None:
+        self._memoized_services = {}
+
+
+di: Container = Container()
+
+
+__all__ = ["Container", "di"]
--- a/busrtworker/kink/errors/init.py
+++ b/busrtworker/kink/errors/init.py
@ -0,0 +1,4 @@
+from .conainer_error import ContainerError
+from .execution_error import ExecutionError
+from .resolver_error import ResolverError
+from .service_error import ServiceError
--- a/busrtworker/kink/errors/conainer_error.py
+++ b/busrtworker/kink/errors/conainer_error.py
@ -0,0 +1,2 @@
+class ContainerError(RuntimeError):
+    pass
--- a/busrtworker/kink/errors/execution_error.py
+++ b/busrtworker/kink/errors/execution_error.py
@ -0,0 +1,5 @@
+from .conainer_error import ContainerError
+
+
+class ExecutionError(ContainerError):
+    pass
--- a/busrtworker/kink/errors/resolver_error.py
+++ b/busrtworker/kink/errors/resolver_error.py
@ -0,0 +1,5 @@
+from .conainer_error import ContainerError
+
+
+class ResolverError(ContainerError):
+    pass
--- a/busrtworker/kink/errors/service_error.py
+++ b/busrtworker/kink/errors/service_error.py
@ -0,0 +1,5 @@
+from .conainer_error import ContainerError
+
+
+class ServiceError(ContainerError, KeyError):
+    pass
--- a/busrtworker/kink/inject.py
+++ b/busrtworker/kink/inject.py
@ -0,0 +1,245 @@
+import asyncio
+import sys
+from abc import ABC
+from functools import wraps
+from inspect import Parameter as InspectParameter, isclass, signature
+from typing import Any, Callable, Dict, ForwardRef, NewType, Tuple, Type, TypeVar, Union  # type: ignore
+
+from typing_extensions import Protocol
+
+from .container import Container, di
+from .errors import ExecutionError
+
+T = TypeVar("T")
+S = TypeVar("S")
+
+ServiceDefinition = Union[Type[S], Callable]
+ServiceResult = Union[S, Callable]
+
+Undefined = NewType("Undefined", int)
+
+
+class _ProtocolInit(Protocol):
+    pass
+
+
+_no_init = _ProtocolInit.__init__
+
+
+def _resolve_forward_reference(module: Any, ref: Union[str, ForwardRef]) -> Any:
+    if isinstance(ref, str):
+        name = ref
+    else:
+        name = ref.__forward_arg__
+
+    if name in sys.modules[module].__dict__:
+        return sys.modules[module].__dict__[name]
+
+    return None
+
+
+class Parameter:
+    type: Any
+    name: str
+    default: Any
+
+    def __init__(self, name: str, type: Any = Any, default: Any = Undefined):
+        self.name = name
+        self.type = type
+        self.default = default
+
+
+def _inspect_function_arguments(
+        function: Callable,
+) -> Tuple[Tuple[str, ...], Dict[str, Parameter]]:
+    parameters_name: Tuple[str, ...] = tuple(signature(function).parameters.keys())
+    parameters = {}
+
+    for name, parameter in signature(function).parameters.items():
+
+        if isinstance(parameter.annotation, (str, ForwardRef)) and hasattr(function, "__module__"):
+            annotation = _resolve_forward_reference(function.__module__, parameter.annotation)
+        else:
+            annotation = parameter.annotation
+
+        parameters[name] = Parameter(
+            parameter.name,
+            annotation,
+            parameter.default if parameter.default is not InspectParameter.empty else Undefined,
+        )
+
+    return parameters_name, parameters
+
+
+def _resolve_function_kwargs(
+        alias_map: Dict[str, str],
+        parameters_name: Tuple[str, ...],
+        parameters: Dict[str, Parameter],
+        container: Container,
+) -> Dict[str, Any]:
+    resolved_kwargs = {}
+    for name in parameters_name:
+        if name in alias_map and alias_map[name] in container:
+            resolved_kwargs[name] = container[alias_map[name]]
+            continue
+
+        if name in container:
+            resolved_kwargs[name] = container[name]
+            continue
+
+        if parameters[name].type in container:
+            resolved_kwargs[name] = container[parameters[name].type]
+            continue
+
+        if parameters[name].default is not Undefined:
+            resolved_kwargs[name] = parameters[name].default
+
+    return resolved_kwargs
+
+
+def _decorate(binding: Dict[str, Any], service: ServiceDefinition, container: Container) -> ServiceResult:
+    # ignore abstract class initialiser and protocol initialisers
+    if (
+            service in [ABC.__init__, _no_init] or service.__name__ == "_no_init"
+    ):  # FIXME: fix this when typing_extensions library gets fixed
+        return service
+
+    # Add class definition to dependency injection
+    parameters_name, parameters = _inspect_function_arguments(service)
+
+    def _resolve_kwargs(args, kwargs) -> dict:
+        # attach named arguments
+        passed_kwargs = {**kwargs}
+
+        # resolve positional arguments
+        if args:
+            for key, value in enumerate(args):
+                passed_kwargs[parameters_name[key]] = value
+
+        # prioritise passed kwargs and args resolving
+        if len(passed_kwargs) == len(parameters_name):
+            return passed_kwargs
+
+        resolved_kwargs = _resolve_function_kwargs(binding, parameters_name, parameters, container)
+
+        all_kwargs = {**resolved_kwargs, **passed_kwargs}
+
+        if len(all_kwargs) < len(parameters_name):
+            missing_parameters = [arg for arg in parameters_name if arg not in all_kwargs]
+            raise ExecutionError(
+                "Cannot execute function without required parameters. "
+                + f"Did you forget to bind the following parameters: `{'`, `'.join(missing_parameters)}`?"
+            )
+
+        return all_kwargs
+
+    @wraps(service)
+    def _decorated(*args, **kwargs):
+        # all arguments were passed
+        if len(args) == len(parameters_name):
+            return service(*args, **kwargs)
+
+        if parameters_name == tuple(kwargs.keys()):
+            return service(**kwargs)
+
+        all_kwargs = _resolve_kwargs(args, kwargs)
+        return service(**all_kwargs)
+
+    @wraps(service)
+    async def _async_decorated(*args, **kwargs):
+        # all arguments were passed
+        if len(args) == len(parameters_name):
+            return await service(*args)
+
+        if parameters_name == tuple(kwargs.keys()):
+            return await service(**kwargs)
+
+        all_kwargs = _resolve_kwargs(args, kwargs)
+        return await service(**all_kwargs)
+
+    if asyncio.iscoroutinefunction(service):
+        return _async_decorated
+
+    return _decorated
+
+
+def inject(
+        _service: ServiceDefinition = None,
+        alias: Any = None,
+        bind: Dict[str, Any] = None,
+        container: Container = di,
+        use_factory: bool = False,
+) -> Union[ServiceResult, Callable[[ServiceDefinition], ServiceResult]]:
+    def _decorator(_service: ServiceDefinition) -> ServiceResult:
+        if isclass(_service):
+            setattr(
+                _service,
+                "__init__",
+                _decorate(bind or {}, getattr(_service, "__init__"), container),
+            )
+            if use_factory:
+                container.factories[_service] = lambda _di: _service()
+                if alias:
+                    container.add_alias(alias, _service)
+            else:
+                container[_service] = lambda _di: _service()
+                if alias:
+                    container.add_alias(alias, _service)
+
+            return _service
+
+        service_function = _decorate(bind or {}, _service, container)
+        container[service_function.__name__] = service_function
+        if alias:
+            container.add_alias(alias, service_function.__name__)
+
+        return service_function
+
+    if _service is None:
+        return _decorator
+
+    return _decorator(_service)
+
+
+def provider(
+        _service: ServiceDefinition = None,
+        alias: Any = None,
+        bind: Dict[str, Any] = None,
+        container: Container = di,
+        process: bool = False,
+) -> Union[ServiceResult, Callable[[ServiceDefinition], ServiceResult]]:
+    def _decorator(_service: ServiceDefinition) -> ServiceResult:
+        if isclass(_service):
+            setattr(
+                _service,
+                "__init__",
+                _decorate(bind or {}, getattr(_service, "__init__"), container),
+            )
+            if process:
+                container.factories[_service] = lambda _di: _service()
+                if alias:
+                    container.add_alias(alias, _service)
+            else:
+                container[_service] = lambda _di: _service()
+                if alias:
+                    container.add_alias(alias, _service)
+
+            return _service
+
+        service_function = _decorate(bind or {}, _service, container)
+        if process:
+            container.factories[service_function.__name__] = lambda x: service_function()
+        else:
+            container[service_function.__name__] = lambda x: service_function()
+        if alias:
+            container.add_alias(alias, service_function.__name__)
+
+        return service_function
+
+    if _service is None:
+        return _decorator
+
+    return _decorator(_service)
+
+
+__all__ = ["inject", "provider"]
--- a/busrtworker/kink/py.typed
+++ b/busrtworker/kink/py.typed
--- a/busrtworker/scheduler/init.py
+++ b/busrtworker/scheduler/init.py
@ -0,0 +1,124 @@
+import asyncio
+import time
+from collections.abc import AsyncIterator
+from typing import Any, Awaitable, Callable, Coroutine, Optional, Set, Union
+
+AsyncFuncType = Callable[[Any, Any], Awaitable[Any]]
+class ClockTicker(AsyncIterator):
+    """
+    T - A clock tick
+    F - Something that happens inside an iteration ("x" = running "-" = waiting)
+    I - A clock iteration
+
+    E.g:
+
+    async for tick in Clock(seconds=2):
+        await asyncio.sleep(3)
+
+
+    T: 15------17------19------21------23------25------27------29------
+    F: xxxxxxxxxxxxx---xxxxxxxxxxxxx---xxxxxxxxxxxxx---xxxxxxxxxxxxx---
+    I: x---------------x---------------x---------------x---------------
+
+    """
+
+    def __init__(self, seconds: Union[float, int]) -> None:
+        """
+        :param seconds: Tick interval in seconds
+        """
+        self.seconds = seconds
+        self.current_iteration = 0
+        self._tick_event = asyncio.Event()
+        self._running: Optional[bool] = None
+        self._main_task: Optional[asyncio.Future] = None
+
+    def __aiter__(self) -> AsyncIterator:
+        if self._running is not None:
+            raise RuntimeError("Cannot reuse a clock instance.")
+
+        self._running = True
+        self._main_task = asyncio.ensure_future(self._run())
+        return self
+
+    async def __anext__(self) -> int:
+        if not self._running:
+            raise StopAsyncIteration
+
+        self._tick_event.clear()
+        await self._tick_event.wait()
+
+        i = self.current_iteration
+        self.current_iteration += 1
+        return i
+
+    async def _run(self) -> None:
+        while self._running:
+            self._tick_event.set()
+            await asyncio.sleep(self.seconds)
+            self._tick_event.clear()
+
+    async def stop(self) -> None:
+        self._running = False
+        if self._main_task:
+            await self._main_task
+
+
+def perf_counter_ms() -> float:
+    """
+    Return the value (in fractional milliseconds) of a performance counter,
+    i.e. a clock with the highest available resolution to measure a short
+    duration. It does include time elapsed during sleep and is system-wide.
+    The reference point of the returned value is undefined, so that only the
+    difference between the results of consecutive calls is valid.
+    """
+    return time.perf_counter() * 1000
+
+
+class ScheduledTaskRunner:
+    def __init__(
+            self,
+            seconds: int,
+            task: Callable[[], Coroutine],
+            max_concurrency: int,
+    ) -> None:
+        self.seconds = seconds
+        self.max_concurrency = max_concurrency
+        self.task = task
+        self.running_tasks: Set[asyncio.Future] = set()
+        self.task_is_done_event = asyncio.Event()
+        self._started = False
+        self.clock = ClockTicker(seconds=self.seconds)
+
+    async def can_dispatch_task(self) -> bool:
+        if len(self.running_tasks) < self.max_concurrency:
+            return True
+
+        if await self.task_is_done_event.wait():
+            return True
+        return False
+
+    async def _wrapped_task(self) -> None:
+        """
+        Wraps the future task on a coroutine that's responsible for unregistering
+        itself from the "running tasks" and emitting an "task is done" event
+        """
+        try:
+            await self.task()
+        finally:
+            self.task_is_done_event.set()
+            self.running_tasks.remove(asyncio.current_task())  # type: ignore
+
+    async def start(self,*args,**kwargs) -> asyncio.Future:
+        self._started = True
+        return asyncio.ensure_future(self._run())
+
+    async def stop(self,*args,**kwargs) -> None:
+        await self.clock.stop()
+        await asyncio.gather(*self.running_tasks)
+
+    async def _run(self) -> None:
+        async for _ in self.clock:
+            if await self.can_dispatch_task():
+                task = asyncio.ensure_future(self._wrapped_task())
+                self.running_tasks.add(task)
+                self.task_is_done_event.clear()
--- a/busrtworker/tree.py
+++ b/busrtworker/tree.py
@ -0,0 +1,166 @@
+class RadixTreeNode(object):
+    def __init__(self, path=None, handler=None, methods=None):
+        self.path = path
+        self.methods = {}
+        self.children = []
+        self.indices = str()
+        self.size = 0
+
+        self.add_methods(methods, handler)
+
+    def __repr__(self):
+        return ('<RadixTreeNode path: {}, methods: {}, indices: {}, children: '
+                '{}>'.format(self.path, self.methods, self.indices,
+                             self.children))
+
+    def add_methods(self, methods, handler):
+        if not methods:
+            return
+
+        if not isinstance(methods, (list, tuple, set)):
+            methods = [methods]
+
+        for method in methods:
+            if method in self.methods and self.methods[method] != handler:
+                raise KeyError(
+                    '{} conflicts with existed handler '
+                    '{}'.format(handler, self.methods[method]))
+
+            self.methods[method] = handler
+
+    def bisect(self, target):
+        low, high = 0, self.size
+        while low < high:
+            mid = low + high >> 1
+            if self.indices[mid] < target:
+                low = mid + 1
+            else:
+                high = mid
+        return low
+
+    def insert_child(self, index, child):
+        pos = self.bisect(index)
+        self.indices = self.indices[:pos] + index + self.indices[pos:]
+        self.children.insert(pos, child)
+        self.size += 1
+
+        return child
+
+    def get_child(self, index):
+        for i, char in enumerate(self.indices):
+            if char == index:
+                return self.children[i]
+
+
+class RadixTree(object):
+    def __init__(self):
+        self.root = RadixTreeNode()
+
+    def __repr__(self):
+        return repr(self.root)
+
+    def insert(self, key, handler, methods):
+        i, n, root = 0, len(key), self.root
+
+        def get_position(i):
+            return n if i == -1 else i
+
+        while i < n:
+            conflict, num = [], (key[i] == ':') + (root.indices == ':')
+
+            if (root.indices == '*' or
+                    key[i] == '*' and root.indices or
+                    num == 1 or
+                    num == 2 and key[i + 1:get_position(
+                        key.find('/', i))] != root.get_child(':').path):
+                conflict = [key[:i] + p for p in self.traverse(root)]
+
+            if conflict:
+                raise Exception('"{}" conflicts with {}'.format(key, conflict))
+
+            child = root.get_child(key[i])
+
+            if child is None:
+                pos = get_position(key.find(':', i))
+                if pos == n:
+                    pos = get_position(key.find('*', i))
+                    if pos == n:
+                        root.insert_child(
+                            key[i], RadixTreeNode(key[i:], handler, methods))
+                        return
+
+                    root = root.insert_child(key[i], RadixTreeNode(key[i:pos]))
+                    root.insert_child(
+                        '*', RadixTreeNode(key[pos + 1:], handler, methods))
+                    return
+
+                root = root.insert_child(key[i], RadixTreeNode(key[i:pos]))
+                i = get_position(key.find('/', pos))
+                root = root.insert_child(':', RadixTreeNode(key[pos + 1:i]))
+
+                if i == n:
+                    root.add_methods(methods, handler)
+            else:
+                root = child
+                if key[i] == ':':
+                    i += len(root.path) + 1
+                    if i == n:
+                        root.add_methods(methods, handler)
+                else:
+                    j, m = 0, len(root.path)
+                    while i < n and j < m and key[i] == root.path[j]:
+                        i += 1
+                        j += 1
+
+                    if j < m:
+                        child = RadixTreeNode(root.path[j:])
+                        child.methods = root.methods
+                        child.children = root.children
+                        child.indices = root.indices
+                        child.size = root.size
+
+                        root.path = root.path[:j]
+                        root.methods = {}
+                        root.children = [child]
+                        root.indices = child.path[0]
+                        root.size = 1
+
+                    if i == n:
+                        root.add_methods(methods, handler)
+
+    def get(self, key, method):
+        i, n, root, params = 0, len(key), self.root, {}
+        while i < n:
+            if root.indices == ':':
+                root, pos = root.children[0], key.find('/', i)
+                if pos == -1:
+                    pos = n
+                params[root.path], i = key[i:pos], pos
+            elif root.indices == '*':
+                root = root.children[0]
+                params[root.path] = key[i:]
+                break
+            else:
+                root = root.get_child(key[i])
+                if root is None:
+                    return False, None, {}
+
+                pos = i + len(root.path)
+                if key[i:pos] != root.path:
+                    return False, None, {}
+                i = pos
+
+        return True, root.methods.get(method, None), params
+
+    def traverse(self, root):
+        r = []
+        for i, char in enumerate(root.indices):
+            child = root.children[i]
+            path = '{}{}'.format(
+                char if char in [':', '*'] else '', child.path)
+
+            if child.methods and child.indices:
+                r.append([path])
+
+            r.append([path + p for p in self.traverse(child) or ['']])
+        return sum(r, [])
--- a/example/api.py
+++ b/example/api.py
@ -0,0 +1,32 @@
+import asyncio
+
+from loguru import logger
+
+from busrtworker import App, ConnectionInfo
+
+app = App()
+
+api_ci = ConnectionInfo('api', 'localhost:9800', 'busrt.worker.test', static=True, topic='test/#')
+caller_ci = ConnectionInfo('caller', 'localhost:9800', 'busrt.worker.test', static=True)
+api = app.registry(api_ci)
+app.registry(caller_ci)
+
+
+@api.on_call()
+def add(a, b):
+    return a + b
+
+
+@api.subscribe('test/:name')
+def print_name(name: str):
+    logger.info(f'{name} pub message')
+
+@app.run_on_startup
+async def test(server):
+    async def call():
+        await asyncio.sleep(1)
+        logger.info(f'call remote add result {(await app.caller.add(api_ci.final_name,a=1, b=2))}')
+        await app.caller.send('test/i_am_caller')
+    asyncio.create_task(call())
+
+app.run()
--- a/poetry.lock
+++ b/poetry.lock
@ -0,0 +1,247 @@
+# This file is automatically @generated by Poetry 1.4.2 and should not be changed by hand.
+
+[[package]]
+name = "colorama"
+version = "0.4.6"
+description = "Cross-platform colored terminal text."
+category = "main"
+optional = false
+python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,!=3.5.*,!=3.6.*,>=2.7"
+files = [
+    {file = "colorama-0.4.6-py2.py3-none-any.whl", hash = "sha256:4f1d9991f5acc0ca119f9d443620b77f9d6b33703e51011c16baf57afb285fc6"},
+    {file = "colorama-0.4.6.tar.gz", hash = "sha256:08695f5cb7ed6e0531a20572697297273c47b8cae5a63ffc6d6ed5c201be6e44"},
+]
+
+[package.source]
+type = "legacy"
+url = "https://mirror.baidu.com/pypi/simple"
+reference = "baidu"
+
+[[package]]
+name = "loguru"
+version = "0.7.0"
+description = "Python logging made (stupidly) simple"
+category = "main"
+optional = false
+python-versions = ">=3.5"
+files = [
+    {file = "loguru-0.7.0-py3-none-any.whl", hash = "sha256:b93aa30099fa6860d4727f1b81f8718e965bb96253fa190fab2077aaad6d15d3"},
+    {file = "loguru-0.7.0.tar.gz", hash = "sha256:1612053ced6ae84d7959dd7d5e431a0532642237ec21f7fd83ac73fe539e03e1"},
+]
+
+[package.dependencies]
+colorama = {version = ">=0.3.4", markers = "sys_platform == \"win32\""}
+win32-setctime = {version = ">=1.0.0", markers = "sys_platform == \"win32\""}
+
+[package.extras]
+dev = ["Sphinx (==5.3.0)", "colorama (==0.4.5)", "colorama (==0.4.6)", "freezegun (==1.1.0)", "freezegun (==1.2.2)", "mypy (==v0.910)", "mypy (==v0.971)", "mypy (==v0.990)", "pre-commit (==3.2.1)", "pytest (==6.1.2)", "pytest (==7.2.1)", "pytest-cov (==2.12.1)", "pytest-cov (==4.0.0)", "pytest-mypy-plugins (==1.10.1)", "pytest-mypy-plugins (==1.9.3)", "sphinx-autobuild (==2021.3.14)", "sphinx-rtd-theme (==1.2.0)", "tox (==3.27.1)", "tox (==4.4.6)"]
+
+[package.source]
+type = "legacy"
+url = "https://mirror.baidu.com/pypi/simple"
+reference = "baidu"
+
+[[package]]
+name = "msgpack"
+version = "1.0.5"
+description = "MessagePack serializer"
+category = "main"
+optional = false
+python-versions = "*"
+files = [
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+]
+
+[package.source]
+type = "legacy"
+url = "https://mirror.baidu.com/pypi/simple"
+reference = "baidu"
+
+[metadata]
+lock-version = "2.0"
+python-versions = "^3.10"
+content-hash = "04b38a8ef5153eb24a8822947e6897b5f9c2459eeda498ca54f243cfedb196f5"
--- a/pyproject.toml
+++ b/pyproject.toml
@ -0,0 +1,43 @@
+[tool.poetry]
+name = "busrt-worker"
+version = "0.1.0"
+description = "busrt-worker is a Python-based async busrt message handle framework"
+authors = ["JimZhang <zzl22100048@gmail.com>"]
+readme = "README.md"
+packages = [{include = "busrt_worker"}]
+
+[tool.poetry.dependencies]
+python = "^3.10"
+msgpack = "^1.0.5"
+zstd = "^1.5.5.1"
+loguru = "^0.7.0"
+
+
+[tool.poetry.group.dev.dependencies]
+
+[build-system]
+requires = ["poetry-core"]
+build-backend = "poetry.core.masonry.api"
+
+
+[[tool.poetry.source]]
+name = "baidu"
+url = "https://mirror.baidu.com/pypi/simple"
+default = true
+
+
+
+[tool.ruff]
+exclude = [
+    "tests",
+]
+line-length = 120
+select = [
+    "E",
+    "F",
+    "W",
+    "I"
+]
+target-version = "py310"
+[tool.ruff.isort]
+combine-as-imports = true
--- a/tests/init.py
+++ b/tests/init.py