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Very initial and generic commits to conform the py-waku repo

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Ivan Folgueira Bande 2024-02-07 12:56:06 +01:00
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venv/
dist/
waku.egg-info/
waku/__pycache__/

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Py-Waku is licensed under the Apache License version 2
Copyright (c) 2024 Status Research & Development GmbH
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Py-Waku is licensed under the MIT License
Copyright (c) 2024 Status Research & Development GmbH
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SOFTWARE.

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# Py-Waku
## Introduction
Py-Waku exposes a Waku module that can be used within Python projects.
It is fundamentally a wrapper around [nwaku](https://github.com/waku-org/nwaku)
This repo has been tested with Python3 in Ubuntu.
If need a different setup, don't hesitate con contact us on Discord. The Discord server can be found at https://docs.waku.org/.
## Prepare the development environment
Run the following commands from the root folder:
1. mkdir venv
2. python3 -m venv venv/
3. source venv/bin/activate
4. ./venv/bin/python -m pip install -r requiremets.txt
## Create a Py-Waku package
Run the following commands from the root folder:
1. source venv/bin/activate
2. ./venv/bin/python3 -m build
## Test the package
For that, we have a very simple example in `tests/waku_example.py`.
In order to use the waku module, please install it from the local `dist/` folder, that can be created by following the
instructions from the previous section.
The following command is an example on how to install the local
package to your local virtual env.
```bash
./venv/bin/python3 -m pip install dist/waku-0.0.1-cp310-cp310-linux_x86_64.whl
```
## Update the libwaku.so library
Given that `Py-Waku` conforms a wrapper around `libwaku.so`,
it is likely that you would need to upgrade it.
For that, you will need to update the submodule pointer
to a more recent nwaku version:
1. `cd vendor/nwaku`
2. Check out to the commit/tag as you wish
Then, follow the following steps from the root folder
to rebuild the `libwaku.so` library:
1. `cd vendor/nwaku`
2. `make libwaku -j8`
3. `cd ../../`
4. `cp vendor/nwaku/build/libwaku.so lib/`
Notice that the `libwaku.so` library is also distributed within
the `Py-Waku` package.

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[project]
name = "waku"
version = "0.0.1"
authors = [
{ name="Waku Dev Team", email="ivansete@status.im" },
]
description = "A small example package"
readme = "README.md"
requires-python = ">=3.10"
[build-system]
requires = ["setuptools", "wheel", "cffi>=1.0.0", "Cython"]
[tool.setuptools]
py-modules = []

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blinker==1.7.0
build==1.0.3
certifi==2023.7.22
cffi==1.16.0
charset-normalizer==3.3.2
click==8.1.7
cryptography==41.0.5
Cython==3.0.8
docutils==0.20.1
Flask==3.0.1
idna==3.4
importlib-metadata==6.8.0
itsdangerous==2.1.2
jaraco.classes==3.3.0
jeepney==0.8.0
Jinja2==3.1.3
keyring==24.2.0
markdown-it-py==3.0.0
MarkupSafe==2.1.5
mdurl==0.1.2
more-itertools==10.1.0
nh3==0.2.14
packaging==23.2
pkginfo==1.9.6
pycparser==2.21
Pygments==2.16.1
pyproject_hooks==1.0.0
readme-renderer==42.0
requests==2.31.0
requests-toolbelt==1.0.0
rfc3986==2.0.0
rich==13.6.0
SecretStorage==3.3.3
tomli==2.0.1
twine==4.0.2
urllib3==2.0.7
Werkzeug==3.0.1
zipp==3.17.0

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## Helper script that allows to start the `waku_example.py`
## and pass it some typical arguments that made the node to connect to a peer.
## Notice that the other peer is expected to a native nwaku running with the following
## configuration file:
## ports-shift = 0
## pubsub-topic = [ "/waku/2/default-waku/proto" "/waku/2/testing-store" ]
## staticnode = [ "/ip4/0.0.0.0/tcp/60001/p2p/16Uiu2HAm2eqzqp6xn32fzgGi8K4BuF88W4Xy6yxsmDcW8h1gj6ie" ]
## log-level = "DEBUG"
## nodekey = "0d714a1fada214dead6dc9c7274585eca0ff292451866e7d6d677dc818e8ccd2"
## lightpush = true
## store = true
## store-message-db-url = "sqlite://sqlite_folder/store.sqlite3"
## store-message-retention-policy = "capacity:100000000"
## rpc-admin=true
## rest-admin=true
## rest = true
## metrics-server = true
## discv5-discovery = true
## discv5-enr-auto-update = true
./venv/bin/python3 \
tests/waku_example.py \
-p 60001 \
-k 364d111d729a6eb6d2e6113e163f017b5ef03a6f94c9b5b7bb1bb36fa5cb07a9 \
-r 1 \
--peer /ip4/127.0.0.1/tcp/60000/p2p/16Uiu2HAmVFXtAfSj4EiR7mL2KvL4EE2wztuQgUSBoj2Jx2KeXFLN

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from setuptools import setup, Extension
from Cython.Build import cythonize
# Define the Extension object
my_extension = Extension(
'waku.waku', # Module name in Python (resulting in my_package.my_module.so)
sources=[''],
include_dirs=['include/'], # Directories to search for header files
libraries=['waku'], # Names of libraries to link against (without 'lib' prefix or file extension)
library_dirs=['lib/'], # Directories to search for libraries
runtime_library_dirs=['lib/'], # Directories to search for shared libraries at runtime
# extra_compile_args=['-O3'], # Extra compiler options
# extra_link_args=['-L/path/to/lib', '-Wl,-rpath=/path/to/lib'], # Extra linker options
)
setup(
name='waku',
version='0.1',
packages=['waku'],
ext_modules=cythonize([my_extension]),
)
# [project.urls]
# Homepage = "https://github.com/pypa/sampleproject"
# Issues = "https://github.com/pypa/sampleproject/issues"

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from flask import Flask
import argparse
import waku
def handle_event(ret, msg):
if ret == 0: ## RET_OK
print("Ok event received: %s" % msg)
else:
print("Error: %s" % msg)
def call_waku(func):
ret = func()
if (ret != 0):
print("Error in %s. Error code: %d" % (locals().keys(), ret))
exit(1)
# Parse params
parser = argparse.ArgumentParser(description='libwaku integration in Python.')
parser.add_argument('-d', '--host', dest='host', default='0.0.0.0',
help='Address this node will listen to. [=0.0.0.0]')
parser.add_argument('-p', '--port', dest='port', default=60000, required=True,
help='Port this node will listen to. [=60000]')
parser.add_argument('-k', '--key', dest='key', default="", required=True,
help="""P2P node private key as 64 char hex string.
e.g.: 364d111d729a6eb6d2e6113e163f017b5ef03a6f94c9b5b7bb1bb36fa5cb07a9""")
parser.add_argument('-r', '--relay', dest='relay', default="true",
help="Enable relay protocol: true|false [=true]")
parser.add_argument('--peer', dest='peer', default="",
help="Multiqualified libp2p address")
args = parser.parse_args()
# The next 'json_config' is the item passed to the 'waku_new'.
json_config = "{ \
\"host\": \"%s\", \
\"port\": %d, \
\"key\": \"%s\", \
\"relay\": %s \
}" % (args.host,
int(args.port),
args.key,
"true" if args.relay else "false")
print("Starting node with config: %s" % json_config)
ctx = waku.waku_new(json_config.encode('ascii'),
lambda ret, msg:
print("Error creating new waku node: %s" %
msg))
# Retrieve the current version of the library
waku.waku_version(ctx,
lambda ret, msg:
# print("Git Version")
# print("Git Version: %s" %
# ctypes.c_char_p(ctypes.addressof(msg)).value.decode('utf-8')))
print("Git Version: %s" % msg))
# Retrieve the default pubsub topic
default_pubsub_topic = ""
waku.waku_default_pubsub_topic(
ctx,
lambda ret, msg: (
globals().update(default_pubsub_topic = msg),
print("Default pubsub topic: %s" % msg)))
print("Bind addr: {}:{}".format(args.host, args.port))
print("Waku Relay enabled: {}".format(args.relay))
# Set the event callback
callback = handle_event # This line is important so that the callback is not gc'ed
waku.waku_set_event_callback(callback)
# Start the node
waku.waku_start(ctx,
lambda ret, msg:
print("Error starting: %s" % msg))
waku.waku_connect(ctx,
args.peer.encode('utf-8'),
10000,
# onErrCb
lambda ret, msg:
print("Error calling waku_connect: %s" % msg))
waku.waku_relay_subscribe(ctx,
default_pubsub_topic.encode('utf-8'),
callback)
# Simply avoid the app to end. We could have a UI in this point or a flask server
# that could attend user actions.
a = input()

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from .waku import *

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## This file contains the definition of the Py-Waku module
## that is going to be delivered when the module is installed.
import ctypes
from cffi import FFI
# Create an FFI object
ffi = FFI()
# Load the C library
libwaku = ffi.dlopen('lib/libwaku.so')
# Declare the C functions
ffi.cdef("""
typedef void (*WakuCallBack) (int callerRet, const char* msg, size_t len);
// Creates a new instance of the waku node.
// Sets up the waku node from the given configuration.
// Returns a pointer to the Context needed by the rest of the API functions.
void* waku_new(
const char* configJson,
WakuCallBack callback,
void* userData);
int waku_start(void* ctx,
WakuCallBack callback,
void* userData);
int waku_stop(void* ctx,
WakuCallBack callback,
void* userData);
int waku_version(void* ctx,
WakuCallBack callback,
void* userData);
void waku_set_event_callback(WakuCallBack callback);
int waku_content_topic(void* ctx,
const char* appName,
unsigned int appVersion,
const char* contentTopicName,
const char* encoding,
WakuCallBack callback,
void* userData);
int waku_pubsub_topic(void* ctx,
const char* topicName,
WakuCallBack callback,
void* userData);
int waku_default_pubsub_topic(void* ctx,
WakuCallBack callback,
void* userData);
int waku_relay_publish(void* ctx,
const char* pubSubTopic,
const char* jsonWakuMessage,
unsigned int timeoutMs,
WakuCallBack callback,
void* userData);
int waku_relay_subscribe(void* ctx,
const char* pubSubTopic,
WakuCallBack callback,
void* userData);
int waku_relay_unsubscribe(void* ctx,
const char* pubSubTopic,
WakuCallBack callback,
void* userData);
int waku_connect(void* ctx,
const char* peerMultiAddr,
unsigned int timeoutMs,
WakuCallBack callback,
void* userData);
""")
##################################################################
## helpers
def process_callback(ret, char_p, len, callback):
## Converts the data from C space (char* + len) into Python string
## and then, calls the Python callback which should only have two parameters:
## First param - integer. 0 means OK. Otherwise, means error, with error code (see libwaku.h)
## Second param - string. Gives detail of the feedback returned by the libwaku
byte_string = ffi.buffer(char_p, len)[:] # Use ffi.buffer to access memory directly
callback(ret, byte_string.decode('utf-8'))
##################################################################
# Define the callback function type within the module
CallbackType = ffi.callback("void(int, char*, size_t)")
# Python wrapper functions
def waku_new(config_json, callback):
def cb(ret, char_p, len):
process_callback(ret, char_p, len, callback)
return libwaku.waku_new(config_json,
CallbackType(cb), # Convert the Python callback to a C callback
ffi.cast("void*", 0))
def waku_start(ctx, callback):
def cb(ret, char_p, len):
process_callback(ret, char_p, len, callback)
return libwaku.waku_start(ctx,
CallbackType(cb),
ffi.cast("void*", 0))
def waku_stop(ctx, callback):
def cb(ret, char_p, len):
process_callback(ret, char_p, len, callback)
return libwaku.waku_stop(ctx,
CallbackType(cb),
ffi.cast("void*", 0))
def waku_version(ctx, callback):
def cb(ret, char_p, len):
process_callback(ret, char_p, len, callback)
return libwaku.waku_version(ctx,
CallbackType(cb),
ffi.cast("void*", 0))
my_python_callback = None
@ffi.callback("void(int, char*, size_t)")
def handle_event(ret, char_p, len):
## Handle the event from the C layer
process_callback(ret, char_p, len, my_python_callback)
def waku_set_event_callback(callback):
global my_python_callback
my_python_callback = callback
libwaku.waku_set_event_callback(handle_event)
def waku_content_topic(ctx,
appName,
appVersion,
contentTopicName,
encoding,
callback):
def cb(ret, char_p, len):
process_callback(ret, char_p, len, callback)
return libwaku.waku_content_topic(ctx,
appName,
appVersion,
contentTopicName,
encoding,
CallbackType(cb),
ffi.cast("void*", 0))
def waku_pubsub_topic(ctx, topicName, callback):
def cb(ret, char_p, len):
process_callback(ret, char_p, len, callback)
return libwaku.waku_pubsub_topic(ctx,
topicName,
CallbackType(cb),
ffi.cast("void*", 0))
def waku_default_pubsub_topic(ctx, callback):
def cb(ret, char_p, len):
process_callback(ret, char_p, len, callback)
return libwaku.waku_default_pubsub_topic(ctx,
CallbackType(cb),
ffi.cast("void*", 0))
def waku_relay_publish(ctx,
pubSubTopic,
jsonWakuMessage,
timeoutMs,
callback):
def cb(ret, char_p, len):
process_callback(ret, char_p, len, callback)
return libwaku.waku_relay_publish(ctx,
pubSubTopic,
jsonWakuMessage,
timeoutMs,
CallbackType(cb),
ffi.cast("void*", 0))
def waku_relay_subscribe(ctx,
pubSubTopic,
callback):
@ffi.callback("void(int, char*, size_t)")
def cb(ret, char_p, len):
process_callback(ret, char_p, len, callback)
return libwaku.waku_relay_subscribe(
ctx,
pubSubTopic,
cb,
ffi.cast("void*", 0))
def waku_relay_unsubscribe(ctx,
pubSubTopic,
callback):
def cb(ret, char_p, len):
process_callback(ret, char_p, len, callback)
return libwaku.waku_relay_unsubscribe(
ctx,
pubSubTopic,
CallbackType(cb),
ffi.cast("void*", 0))
def waku_connect(ctx,
peerMultiAddr,
timeoutMs,
callback):
def cb(ret, char_p, len):
process_callback(ret, char_p, len, callback)
return libwaku.waku_connect(
ctx,
peerMultiAddr,
timeoutMs,
CallbackType(cb),
ffi.cast("void*", 0))