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backend: Use exponential backoff when accessing ETH-RPC #344

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Merged
konradkonrad merged 1 commit into from
Oct 13, 2022
Merged

backend: Use exponential backoff when accessing ETH-RPC #344

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10 changes: 9 additions & 1 deletion backend/metrics_backend/metrics_cli.py
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Original file line number Diff line number Diff line change
Expand Up @@ -23,6 +23,7 @@
contracts_precompiled_path,
get_contracts_deployment_info
)
from raiden_common.blockchain.middleware import http_retry_with_backoff_middleware
from requests.exceptions import ConnectionError
from web3 import HTTPProvider, Web3

Expand Down Expand Up @@ -109,7 +110,14 @@ def main(
log.info("Starting Raiden Metrics Server")
try:
log.info(f'Starting Web3 client for node at {eth_rpc}')
web3 = Web3(HTTPProvider(eth_rpc))
provider = HTTPProvider(eth_rpc)

# give web3 some time between retries before failing
provider.middlewares.replace( # type: ignore
"http_retry_request", http_retry_with_backoff_middleware
)

web3 = Web3(provider)
except ConnectionError:
log.error(
'Can not connect to the Ethereum client. Please check that it is running and that '
Expand Down
2 changes: 1 addition & 1 deletion backend/requirements.txt
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Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
raiden-common == 0.1.4
raiden-common == 0.1.5

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