97 lines
2.2 KiB
Python
Executable File
97 lines
2.2 KiB
Python
Executable File
#!/usr/bin/env python3
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"""Simple plugin to show how to build new plugins for c-lightning
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It demonstrates how a plugin communicates with c-lightning, how it
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registers command line arguments that should be passed through and how
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it can register JSON-RPC commands. We communicate with the main daemon
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through STDIN and STDOUT, reading and writing JSON-RPC requests.
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"""
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import json
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import sys
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greeting = "World"
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def json_hello(request, name):
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greeting = "Hello {}".format(name)
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return greeting
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def json_fail(request):
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raise ValueError("This will fail")
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def json_getmanifest(request):
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global greeting
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return {
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"options": [
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{"name": "greeting",
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"type": "string",
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"default": greeting,
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"description": "What name should I call you?"},
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],
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"rpcmethods": [
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{
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"name": "hello",
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"description": "Returns a personalized greeting for {name}",
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},
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{
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"name": "fail",
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"description": "Always returns a failure for testing",
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},
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]
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}
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def json_init(request, options, configuration):
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"""The main daemon is telling us the relevant cli options
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"""
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global greeting
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greeting = request['params']['options']['greeting']
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return "ok"
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methods = {
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'hello': json_hello,
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'fail': json_fail,
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'getmanifest': json_getmanifest,
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'init': json_init,
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}
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partial = ""
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for l in sys.stdin:
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try:
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partial += l
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request = json.loads(partial)
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except Exception:
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continue
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result = None
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method = methods[request['method']]
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params = request['params']
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try:
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if isinstance(params, dict):
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result = method(request, **params)
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else:
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result = method(request, *params)
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result = {
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"jsonrpc": "2.0",
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"result": result,
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"id": request['id']
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}
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except Exception as e:
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result = {
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"jsonrpc": "2.0",
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"error": "Error while processing {}".format(request['method']),
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"id": request['id']
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}
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json.dump(result, fp=sys.stdout)
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sys.stdout.write('\n')
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sys.stdout.flush()
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partial = ""
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