From 12d4dd6356c8fcd3bedd5a8c555ea2885a6b5db9 Mon Sep 17 00:00:00 2001
From: Jim W <poopoothegorilla@users.noreply.github.com>
Date: Tue, 20 Feb 2024 23:59:41 -0500
Subject: [PATCH] nethermind error change bug (#12109)

* initial attempt to fix bug

* add tests

* Update core/chains/evm/client/errors.go

Co-authored-by: Vyzaldy Sanchez <vyzaldysanchez@gmail.com>

* change last line to critical

* fix 503 error message

---------

Co-authored-by: Vyzaldy Sanchez <vyzaldysanchez@gmail.com>
Co-authored-by: Prashant Yadav <34992934+prashantkumar1982@users.noreply.github.com>
---
 core/chains/evm/client/errors.go      | 17 ++++++++++++++---
 core/chains/evm/client/errors_test.go | 13 +++++++++++++
 2 files changed, 27 insertions(+), 3 deletions(-)

diff --git a/core/chains/evm/client/errors.go b/core/chains/evm/client/errors.go
index 67197b764a0..e966e088678 100644
--- a/core/chains/evm/client/errors.go
+++ b/core/chains/evm/client/errors.go
@@ -62,6 +62,7 @@ const (
 	L2Full
 	TransactionAlreadyMined
 	Fatal
+	ServiceUnavailable
 )
 
 type ClientErrors = map[int]*regexp.Regexp
@@ -196,8 +197,9 @@ var nethermind = ClientErrors{
 	TransactionAlreadyInMempool: regexp.MustCompile(`(: |^)(AlreadyKnown|OwnNonceAlreadyUsed)$`),
 
 	// InsufficientFunds: Sender account has not enough balance to execute this transaction.
-	InsufficientEth: regexp.MustCompile(`(: |^)InsufficientFunds(, Account balance: \d+, cumulative cost: \d+)?$`),
-	Fatal:           nethermindFatal,
+	InsufficientEth:    regexp.MustCompile(`(: |^)InsufficientFunds(, Account balance: \d+, cumulative cost: \d+|, Balance is \d+ less than sending value \+ gas \d+)?$`),
+	ServiceUnavailable: regexp.MustCompile(`(: |^)503 Service Unavailable: [\s\S]*$`),
+	Fatal:              nethermindFatal,
 }
 
 // Harmony
@@ -301,6 +303,11 @@ func (s *SendError) IsL2Full() bool {
 	return s.is(L2Full)
 }
 
+// IsServiceUnavailable indicates if the error was caused by a service being unavailable
+func (s *SendError) IsServiceUnavailable() bool {
+	return s.is(ServiceUnavailable)
+}
+
 // IsTimeout indicates if the error was caused by an exceeded context deadline
 func (s *SendError) IsTimeout() bool {
 	if s == nil {
@@ -483,6 +490,10 @@ func ClassifySendError(err error, lggr logger.SugaredLogger, tx *types.Transacti
 		), "err", sendError, "etx", tx)
 		return commonclient.InsufficientFunds
 	}
+	if sendError.IsServiceUnavailable() {
+		lggr.Errorw("service unavailable while sending transaction %x", tx.Hash(), "err", sendError, "etx", tx)
+		return commonclient.Retryable
+	}
 	if sendError.IsTimeout() {
 		lggr.Errorw("timeout while sending transaction %x", tx.Hash(), "err", sendError, "etx", tx)
 		return commonclient.Retryable
@@ -499,6 +510,6 @@ func ClassifySendError(err error, lggr logger.SugaredLogger, tx *types.Transacti
 		)
 		return commonclient.ExceedsMaxFee
 	}
-	lggr.Errorw("Unknown error encountered when sending transaction", "err", err, "etx", tx)
+	lggr.Criticalw("Unknown error encountered when sending transaction", "err", err, "etx", tx)
 	return commonclient.Unknown
 }
diff --git a/core/chains/evm/client/errors_test.go b/core/chains/evm/client/errors_test.go
index ad8079824ab..f47b93c0400 100644
--- a/core/chains/evm/client/errors_test.go
+++ b/core/chains/evm/client/errors_test.go
@@ -195,6 +195,7 @@ func Test_Eth_Errors(t *testing.T) {
 			{"insufficient funds for gas * price + value: address 0xb68D832c1241bc50db1CF09e96c0F4201D5539C9 have 9934612900000000 want 9936662900000000", true, "Arbitrum"},
 			{"call failed: InsufficientFunds", true, "Nethermind"},
 			{"call failed: InsufficientFunds, Account balance: 4740799397601480913, cumulative cost: 22019342038993800000", true, "Nethermind"},
+			{"call failed: InsufficientFunds, Balance is 1092404690719251702 less than sending value + gas 7165512000464000000", true, "Nethermind"},
 			{"insufficient funds", true, "Klaytn"},
 			{"insufficient funds for gas * price + value + gatewayFee", true, "celo"},
 			{"insufficient balance for transfer", true, "zkSync"},
@@ -208,6 +209,18 @@ func Test_Eth_Errors(t *testing.T) {
 		}
 	})
 
+	t.Run("IsServiceUnavailable", func(t *testing.T) {
+		tests := []errorCase{
+			{"call failed: 503 Service Unavailable: <html>\r\n<head><title>503 Service Temporarily Unavailable</title></head>\r\n<body>\r\n<center><h1>503 Service Temporarily Unavailable</h1></center>\r\n</body>\r\n</html>\r\n", true, "Nethermind"},
+		}
+		for _, test := range tests {
+			err = evmclient.NewSendErrorS(test.message)
+			assert.Equal(t, err.IsServiceUnavailable(), test.expect)
+			err = newSendErrorWrapped(test.message)
+			assert.Equal(t, err.IsServiceUnavailable(), test.expect)
+		}
+	})
+
 	t.Run("IsTxFeeExceedsCap", func(t *testing.T) {
 		tests := []errorCase{
 			{"tx fee (1.10 ether) exceeds the configured cap (1.00 ether)", true, "geth"},