Fixed missing account handling

Author: amit-momin

pkg/solana/ccip/chainaccessor/config.go

@@ -3,10 +3,12 @@ package chainaccessor
 import (
 	"context"
 	"encoding/binary"
+	"errors"
 	"fmt"
 	"slices"
 
 	"github.com/gagliardetto/solana-go"
+	"github.com/gagliardetto/solana-go/rpc"
 	"github.com/smartcontractkit/chainlink-common/pkg/types/ccipocr3"
 
 	offramp "github.com/smartcontractkit/chainlink-ccip/chains/solana/gobindings/latest/ccip_offramp"
@@ -132,11 +134,14 @@ func (a *SolanaAccessor) getOffRampSourceChainConfigs(ctx context.Context, sourc
 
 		var sourceChain offramp.SourceChain
 		err = a.client.GetAccountDataBorshInto(ctx, sourceChainPDA, &sourceChain)
+		// The plugin is built with EVM behaviour in mind: if account is not found insert entry for chain with source chain config disabled
+		if errors.Is(err, rpc.ErrNotFound) {
+			sourceChainConfigs[selector] = ccipocr3.SourceChainConfig{
+				IsEnabled: false,
+			}
+		}
 		if err != nil {
-			// TODO: Do we want to return what we can or is a failure to find a source chain config here something we should break at.
-			// The feed chain selector seems to be included in the list so continuing seems the right move
-			a.lggr.Debugw("could not find source chain config for selector", "selector", selector)
-			continue
+			return nil, fmt.Errorf("failed to fetch source chain config for selector %d: %w", selector, err)
 		}
 
 		a.lggr.Debugw("fetching source chain config", "sourceChainSelector", selector, "offramp", offrampAddr.String(), "sourceChainPDA", sourceChainPDA.String(), "sourceChain", sourceChain)
@@ -278,7 +283,7 @@ func (a *SolanaAccessor) getOfframpConfig(ctx context.Context, offrampAddr solan
 }
 
 func (a *SolanaAccessor) getOfframpReferenceAddresses(ctx context.Context, offrampAddr solana.PublicKey) (offramp.ReferenceAddresses, error) {
-	a.lggr.Debugw("getOfframpReferenceAddresses", "offrampAddr", offrampAddr.String(), "")
+	a.lggr.Debugw("getOfframpReferenceAddresses", "offrampAddr", offrampAddr.String())
 	refAddrPDA, _, err := state.FindOfframpReferenceAddressesPDA(offrampAddr)
 	if err != nil {
 		return offramp.ReferenceAddresses{}, fmt.Errorf("failed to calculate the offramp reference addresses PDA: %w", err)

pkg/solana/ccip/chainaccessor/solana_accessor.go

@@ -10,6 +10,7 @@ import (
 	"time"
 
 	"github.com/gagliardetto/solana-go"
+	"github.com/gagliardetto/solana-go/rpc"
 
 	"github.com/smartcontractkit/chainlink-common/pkg/logger"
 	"github.com/smartcontractkit/chainlink-common/pkg/types"
@@ -582,9 +583,18 @@ func (a *SolanaAccessor) GetChainFeePriceUpdate(ctx context.Context, selectors [
 
 		var destChain feequoter.DestChain
 		err = a.client.GetAccountDataBorshInto(ctx, destChainPDA, &destChain)
-		if err != nil {
+		// The plugin is built with EVM behaviour in mind: if account is not found the zero value is returned
+		if errors.Is(err, rpc.ErrNotFound) {
+			feePriceUpdates[sel] = ccipocr3.TimestampedBig{
+				Value:     ccipocr3.NewBigIntFromInt64(0),
+				Timestamp: time.Time{},
+			}
 			continue
 		}
+		if err != nil {
+			a.lggr.Errorw("failed to batch get chain fee price updates", "err", err)
+			return nil
+		}
 
 		value := new(big.Int).SetBytes(destChain.State.UsdPerUnitGas.Value[:])
 		feePriceUpdates[sel] = ccipocr3.TimestampedBig{