cashu wallet container crashes at start if proxy is not yet available

[mixmasala]

a3071d93c31d:/build/katzenpost/docker# podman logs voting_mixnet-client_cashu_wallet-1
Skipping virtualenv creation, as specified in config file.
Warning: 'cashu' is an entry point defined in pyproject.toml, but it's not installed as a script. You may get improper `sys.argv[0]`.

The support to run uninstalled scripts will be removed in a future release.

Run `poetry install` to resolve and get rid of this message.

INFO:     Started server process [1]
INFO:     Waiting for application startup.
ERROR:    Traceback (most recent call last):
  File "/usr/local/lib/python3.11/site-packages/urllib3/connection.py", line 203, in _new_conn
    sock = connection.create_connection(
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/urllib3/util/connection.py", line 85, in create_connection
    raise err
  File "/usr/local/lib/python3.11/site-packages/urllib3/util/connection.py", line 73, in create_connection
    sock.connect(sa)
ConnectionRefusedError: [Errno 111] Connection refused

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/usr/local/lib/python3.11/site-packages/urllib3/connectionpool.py", line 790, in urlopen
    response = self._make_request(
               ^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/urllib3/connectionpool.py", line 496, in _make_request
    conn.request(
  File "/usr/local/lib/python3.11/site-packages/urllib3/connection.py", line 395, in request
    self.endheaders()
  File "/usr/local/lib/python3.11/http/client.py", line 1281, in endheaders
    self._send_output(message_body, encode_chunked=encode_chunked)
  File "/usr/local/lib/python3.11/http/client.py", line 1041, in _send_output
    self.send(msg)
  File "/usr/local/lib/python3.11/http/client.py", line 979, in send
    self.connect()
  File "/usr/local/lib/python3.11/site-packages/urllib3/connection.py", line 243, in connect
    self.sock = self._new_conn()
                ^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/urllib3/connection.py", line 218, in _new_conn
    raise NewConnectionError(
urllib3.exceptions.NewConnectionError: <urllib3.connection.HTTPConnection object at 0x7f23620da010>: Failed to establish a new connection: [Errno 111] Connection refused

The above exception was the direct cause of the following exception:

urllib3.exceptions.ProxyError: ('Unable to connect to proxy', NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7f23620da010>: Failed to establish a new connection: [Errno 111] Connection refused'))

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/usr/local/lib/python3.11/site-packages/requests/adapters.py", line 486, in send
    resp = conn.urlopen(
           ^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/urllib3/connectionpool.py", line 844, in urlopen
    retries = retries.increment(
              ^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/urllib3/util/retry.py", line 515, in increment
    raise MaxRetryError(_pool, url, reason) from reason  # type: ignore[arg-type]
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
urllib3.exceptions.MaxRetryError: HTTPConnectionPool(host='127.0.0.1', port=8080): Max retries exceeded with url: http://127.0.0.1:3338/keys (Caused by ProxyError('Unable to connect to proxy', NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7f23620da010>: Failed to establish a new connection: [Errno 111] Connection refused')))

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/lib/python3.11/site-packages/starlette/routing.py", line 677, in lifespan
    async with self.lifespan_context(app) as maybe_state:
  File "/usr/local/lib/python3.11/site-packages/starlette/routing.py", line 566, in __aenter__
    await self._router.startup()
  File "/usr/local/lib/python3.11/site-packages/starlette/routing.py", line 654, in startup
    await handler()
  File "/app/cashu/cashu/wallet/api/router.py", line 75, in start_wallet
    await wallet.load_mint()
  File "/app/cashu/cashu/wallet/wallet.py", line 576, in load_mint
    await super()._load_mint(keyset_id)
  File "/app/cashu/cashu/wallet/wallet.py", line 212, in _load_mint
    await self._load_mint_keys(keyset_id)
  File "/app/cashu/cashu/wallet/wallet.py", line 160, in _load_mint_keys
    keyset = await self._get_keys(self.url)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/app/cashu/cashu/wallet/wallet.py", line 96, in wrapper
    return await func(self, *args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/app/cashu/cashu/wallet/wallet.py", line 248, in _get_keys
    resp = self.s.get(
           ^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/requests/sessions.py", line 602, in get
    return self.request("GET", url, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/requests/sessions.py", line 589, in request
    resp = self.send(prep, **send_kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/requests/sessions.py", line 703, in send
    r = adapter.send(request, **kwargs)
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/requests/adapters.py", line 513, in send
    raise ProxyError(e, request=request)
requests.exceptions.ProxyError: HTTPConnectionPool(host='127.0.0.1', port=8080): Max retries exceeded with url: http://127.0.0.1:3338/keys (Caused by ProxyError('Unable to connect to proxy', NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7f23620da010>: Failed to establish a new connection: [Errno 111] Connection refused')))

ERROR:    Application startup failed. Exiting.
Creating database directory: /root/.cashu/wallet
Generated a new mnemonic. To view it, run "cashu info --mnemonic".

[mixmasala]

I tried to add a healthcheck 6a2b000fd68d0d87b7d258930d862deb24c735f4 to the generated docker_compose.yml so that the wallet containers would be started after the proxy, but this isn't working with docker_compose v2.17.3.

[mixmasala]

https://github.com/CloakedServices/CloakedNetworkPoC/pull/33 adds a healthcheck but this does not work

[mixmasala]

was resolved in cashu