Polkadex - error requesting exchange info.

[nikspz]

Polkadex - error requesting exchange info.

Steps To Reproduce
Setup latest development branch for client
Start the client and observe the log panel

Screenshots

Release version
dev-1.17.0, staging 1.17.0

2023-06-20 02:40:24,127 - 314 - hummingbot.connector.exchange.polkadex.polkadex_exchange.PolkadexExchange - ERROR - There was an error requesting exchange info.
Traceback (most recent call last):
  File "/home/comp1/miniconda3/envs/hummingbot/lib/python3.8/site-packages/aiohttp/connector.py", line 1152, in _create_direct_connection
    hosts = await asyncio.shield(host_resolved)
  File "/home/comp1/miniconda3/envs/hummingbot/lib/python3.8/site-packages/aiohttp/connector.py", line 874, in _resolve_host
    addrs = await self._resolver.resolve(host, port, family=self._family)
  File "/home/comp1/miniconda3/envs/hummingbot/lib/python3.8/site-packages/aiohttp/resolver.py", line 33, in resolve
    infos = await self._loop.getaddrinfo(
  File "/home/comp1/miniconda3/envs/hummingbot/lib/python3.8/asyncio/base_events.py", line 825, in getaddrinfo
    return await self.run_in_executor(
  File "/home/comp1/miniconda3/envs/hummingbot/lib/python3.8/concurrent/futures/thread.py", line 57, in run
    result = self.fn(*self.args, **self.kwargs)
  File "/home/comp1/miniconda3/envs/hummingbot/lib/python3.8/socket.py", line 918, in getaddrinfo
    for res in _socket.getaddrinfo(host, port, family, type, proto, flags):
socket.gaierror: [Errno -2] Name or service not known

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

Traceback (most recent call last):
  File "/home/comp1/development/hummingbot/connector/exchange/polkadex/polkadex_exchange.py", line 265, in _initialize_trading_pair_symbol_map
    mapping = await self._data_source.symbols_map()
  File "/home/comp1/development/hummingbot/connector/exchange/polkadex/polkadex_data_source.py", line 170, in symbols_map
    assets_map = await self.assets_map()
  File "/home/comp1/development/hummingbot/connector/exchange/polkadex/polkadex_data_source.py", line 153, in assets_map
    all_assets = await self._query_executor.all_assets()
  File "/home/comp1/development/hummingbot/connector/exchange/polkadex/polkadex_query_executor.py", line 109, in all_assets
    result = await self._execute_query(query=query, parameters=parameters)
  File "/home/comp1/development/hummingbot/connector/exchange/polkadex/polkadex_query_executor.py", line 376, in _execute_query
    result = await session.execute(query, variable_values=parameters, parse_result=True)
  File "/home/comp1/miniconda3/envs/hummingbot/lib/python3.8/site-packages/gql/client.py", line 1220, in execute
    result = await self._execute(
  File "/home/comp1/miniconda3/envs/hummingbot/lib/python3.8/site-packages/gql/client.py", line 1126, in _execute
    result = await asyncio.wait_for(
  File "/home/comp1/miniconda3/envs/hummingbot/lib/python3.8/asyncio/tasks.py", line 483, in wait_for
    return fut.result()
  File "/home/comp1/miniconda3/envs/hummingbot/lib/python3.8/site-packages/gql/transport/aiohttp.py", line 296, in execute
    async with self.session.post(self.url, ssl=self.ssl, **post_args) as resp:
  File "/home/comp1/miniconda3/envs/hummingbot/lib/python3.8/site-packages/aiohttp/client.py", line 1141, in __aenter__
    self._resp = await self._coro
  File "/home/comp1/miniconda3/envs/hummingbot/lib/python3.8/site-packages/aiohttp/client.py", line 536, in _request
    conn = await self._connector.connect(
  File "/home/comp1/miniconda3/envs/hummingbot/lib/python3.8/site-packages/aiohttp/connector.py", line 540, in connect
    proto = await self._create_connection(req, traces, timeout)
  File "/home/comp1/miniconda3/envs/hummingbot/lib/python3.8/site-packages/aiohttp/connector.py", line 901, in _create_connection
    _, proto = await self._create_direct_connection(req, traces, timeout)
  File "/home/comp1/miniconda3/envs/hummingbot/lib/python3.8/site-packages/aiohttp/connector.py", line 1166, in _create_direct_connection
    raise ClientConnectorError(req.connection_key, exc) from exc
aiohttp.client_exceptions.ClientConnectorError: Cannot connect to host gu5xqmhhcnfeveotzwhe6ohfba.appsync-api.eu-central-1.amazonaws.com:443 ssl:False [Name or service not known]

[petioptrv]

@nikspz, polkadex is currently down for order book upgrade. Please see their post.

[nikspz]

Okay, got it, thanks Petio

[peterwilli]

Can I ask why the entire bot is offline when one exchange doesnt work? I assume we can fix that right?

I dont use pollkadex myself.

[nikspz]

hi @peterwilli, other connectors not affected by Polkadex issue

[peterwilli]

It seems all DEX (gateway) connectors are affected. When I try this script:

from hummingbot.strategy.script_strategy_base import ScriptStrategyBase

class EmeraldFundScript(ScriptStrategyBase):
    markets = {
        "pancakeswap": {
            "btc-usdt-perp"
        }
    }

    def on_tick(self):
        self.logger().info("test")

or

from hummingbot.strategy.script_strategy_base import ScriptStrategyBase

class EmeraldFundScript(ScriptStrategyBase):
    markets = {
        "injective_perpetual": {
            "btc-usdt-perp"
        }
    }

    def on_tick(self):
        self.logger().info("test")

Both result in unhandled error in the logs, with the Polkadot error appearing before the scripts are run. Replace injective_perpetual by binance_paper_trade and it runs fine.

Armed with this new info, I'll try to fix the bug right now (hopefully not making it too late in the night).

[peterwilli]

I found my issue! It was super confusing and had nothing to do with polkadex!

Instead of injective_perpetual or injective, you have to name your connections injective_perpetual_injective_mainnet or injective_injective_mainnet. I was really confused because the scripts started failing right around the Polkadex issue, but htey are completely unrelated!

[nikspz]

Polkadex updates PRs merged here:
#6558
#6650

Can't reproduce on latest development (dev-1.25.0), and latest release 1.24.0