lnd_grpc hodl invoice testing.

hodl-invoice-example.py

from lnd_grpc import Client
from random import randint
from hashlib import sha256
from time import sleep


def create_random_hash():
    n = str(randint(0, 1e32))
    hash = sha256(n.encode())
    return hash.digest(), n


lnd_readonly = Client(
    macaroon_path="readonly.macaroon",
    tls_cert_path="tls.cert",
    network="testnet",
    grpc_host="192.168.1.47",
    grpc_port="10009",
)
print(lnd_readonly.get_info())
print(lnd_readonly.get_network_info())
print(lnd_readonly.list_channels())


lnd_invoices = Client(
    macaroon_path="invoices.macaroon",
    tls_cert_path="tls.cert",
    network="testnet",
    grpc_host="192.168.1.47",
    grpc_port="10009",
)

HASH, PREIMAGE = create_random_hash()
MEMO = "TESTING HODL INVOICES"
SATOSHIS = 10

print("HASH", HASH)
print("PREIMAGE", PREIMAGE)

invoice = lnd_invoices.add_hold_invoice(memo=MEMO, hash=HASH, value=SATOSHIS)
invoice_info = lnd_readonly.subscribe_single_invoice(r_hash=HASH)

for status in invoice_info:
    print("status:", status.state)
    print(status)
    if status.state == 3:
        print("ACCEPTED")
        print("VERIFYING SOMETHING", end="")
        for _ in range(10):
            print(".", end="", flush=True)
            sleep(1)
        else:
            print()
        if randint(0, 1):
            print("EVERYTHING LOOKS GOOD. SETTLING PAYMENT.")
            sleep(1)
            lnd_invoices.settle_invoice(preimage=PREIMAGE.encode())
            print("PAYMENT SETTLED!")
            sleep(1)
        else:
            print("OH NO! SOMETHING WENT WRONG. CANCELING PAYMENT.")
            sleep(1)
            lnd_invoices.cancel_invoice(HASH)
            print("PAYMENT CANCELED!")
            sleep(1)
        break
    else:
        print(status)
        sleep(1)

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