revert FetchNextMessageAsync sql

d918ea8f · Savorboard · 0025e3cb · d918ea8f
Commit d918ea8f authored Oct 11, 2017 by Savorboard
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MySqlStorageConnection.cs src/DotNetCore.CAP.MySql/MySqlStorageConnection.cs +5 -2

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--- a/src/DotNetCore.CAP.MySql/MySqlStorageConnection.cs
+++ b/src/DotNetCore.CAP.MySql/MySqlStorageConnection.cs
@@ -41,8 +41,11 @@ namespace DotNetCore.CAP.MySql
        public Task<IFetchedMessage> FetchNextMessageAsync()
        {
            var sql = $@"
-SELECT @MId:=`MessageId` as MessageId, @MType:=`MessageType` as MessageType FROM `{_prefix}.queue` LIMIT 1;
-DELETE FROM `{_prefix}.queue` where `MessageId` = @MId AND `MessageType`=@MType;";
+SELECT `MessageId`,`MessageType` FROM `{_prefix}.queue` LIMIT 1 FOR UPDATE;
+DELETE FROM `{_prefix}.queue` LIMIT 1;";
+//            var sql = $@"
+//SELECT @MId:=`MessageId` as MessageId, @MType:=`MessageType` as MessageType FROM `{_prefix}.queue` LIMIT 1;
+//DELETE FROM `{_prefix}.queue` where `MessageId` = @MId AND `MessageType`=@MType;";

            return FetchNextMessageCoreAsync(sql);
        }