BE-682 | Set isBestEffort when there are no orderbooks in the system …

…to process (#609)

* BE-682 | Set isBestEffort when there are no orderbooks in the system to process

Sets best effort flag for active-orders when there are no orderbooks in
the system ingested that may indicate issues with no data incoming
from the Node.

CHANGELOG.md

@@ -37,6 +37,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 Unreleased
 
+- #609 - BE-682 | Set isBestEffort when there are no orderbooks in the system to process
 - #608 - BE-682 | Set isBestEffort on error processing orderbook active orders
 
 ## v28.1.0

orderbook/usecase/orderbook_usecase.go

@@ -215,6 +215,13 @@ func (o *OrderbookUseCaseImpl) GetActiveOrders(ctx context.Context, address stri
 		return nil, false, types.FailedGetAllCanonicalOrderbookPoolIDsError{Err: err}
 	}
 
+	// When there are no orderbooks, return early with best effort flag set to true
+	// Such cases are not considered an error, but it may indicate that the SQS
+	// is not receiving any orderbook data from the Node.
+	if len(orderbooks) == 0 {
+		return nil, true, nil
+	}
+
 	results := make(chan orderbookdomain.OrderbookResult, len(orderbooks))
 
 	// Process orderbooks concurrently

orderbook/usecase/orderbook_usecase_test.go

@@ -466,6 +466,20 @@ func (s *OrderbookUsecaseTestSuite) TestGetActiveOrders() {
 			address:       "osmo1npsku4qlqav6udkvgfk9eran4s4edzu69vzdm6",
 			expectedError: &types.FailedGetAllCanonicalOrderbookPoolIDsError{},
 		},
+		{
+			name: "no canonical orderbook pool IDs",
+			setupContext: func() context.Context {
+				return context.Background()
+			},
+			setupMocks: func(usecase *orderbookusecase.OrderbookUseCaseImpl, orderbookrepository *mocks.OrderbookRepositoryMock, grpcclient *mocks.OrderbookGRPCClientMock, poolsUsecase *mocks.PoolsUsecaseMock, tokensusecase *mocks.TokensUsecaseMock) {
+				poolsUsecase.GetAllCanonicalOrderbookPoolIDsFunc = func() ([]domain.CanonicalOrderBooksResult, error) {
+					return nil, nil
+				}
+			},
+			address:              "osmo1npsku4qlqav6udkvgfk9eran4s4edzu69vzdm6",
+			expectedError:        nil,
+			expectedIsBestEffort: true,
+		},
 		{
 			name: "context is done before processing all orderbooks",
 			setupContext: func() context.Context {