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ServerCommon/Cache/FriendInterlockCacheRequest.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+
+using Amazon.OpenSearchService.Model.Internal.MarshallTransformations;
+using Microsoft.IdentityModel.Tokens;
+using ServerControlCenter;
+using StackExchange.Redis;
+
+
+using ServerCore;
+using ServerBase;
+
+
+namespace ServerCommon;
+
+
+public class FriendInterlockCacheRequest : RedisRequestPrivateBase
+{
+    string m_guid = string.Empty;
+    string m_friend_guid = string.Empty;
+
+
+    public FriendInterlockCacheRequest(UserBase owner, RedisConnector redisConnector, string userGuid, string friendGuid)
+        : base(owner, redisConnector)
+    {
+        m_guid = userGuid;
+        m_friend_guid = friendGuid;
+    }
+
+    protected override string onMakeKey()
+    {
+        return $"friendrequestaction:{getSuffix()}";
+    }
+
+    public async Task<Result> getLock()
+    {
+        var key = onMakeKey();
+        var database = getDatabase();
+
+        var result = new Result();
+        string err_msg;
+
+        try
+        {
+            if (false == await database.SortedSetAddAsync(key, m_guid, DateTimeOffset.Now.ToUnixTimeMilliseconds()))
+            {
+                err_msg = $"Failed to add FriendCache from Redis !!! : key : {key}, guid : {m_guid}";
+                //result.setFail(ServerErrorCode.TryCatchException, err_msg);
+                Log.getLogger().warn(err_msg);
+                //return result;
+            }
+            else
+            {
+                Log.getLogger().debug($"Success to add FriendCache from Redis !!! : key : {key}, guid : {m_guid}");
+            }
+            if (false == await database.KeyExpireAsync(key, TimeSpan.FromMilliseconds(10000)))
+            {
+                err_msg = $"Failed to set expire FriendCache from Redis !!! : key : {key}, guid : {m_guid}";
+                result.setFail(ServerErrorCode.TryCatchException, err_msg);
+                Log.getLogger().error(err_msg);
+                return result;
+            }
+
+            Int32 retry_cnt = 3;
+            Int32 millisecondTimeout = 100;
+            for (Int32 i = 0; i < retry_cnt; i++)
+            {
+                var values = await database.SortedSetRangeByRankAsync(key, 0, 0, Order.Ascending, CommandFlags.PreferMaster);
+                if (false == values[0].HasValue)
+                {
+                    Log.getLogger().warn($"Not Exist Value m_guid : {m_guid}, m_friend_guid : {m_friend_guid}");
+                    System.Threading.Thread.Sleep(millisecondTimeout);
+                    continue;
+                }
+
+                if (true == values[0].Equals(m_guid))
+                {
+                    return result;
+                    
+                }
+                else 
+                {
+                    Log.getLogger().warn($"Not Exist Value m_guid : {m_guid}, m_friend_guid : {m_friend_guid}, values[0] : {values[0]}");
+                    System.Threading.Thread.Sleep(millisecondTimeout);
+                    continue;
+                }
+            }
+        }
+        catch (Exception e)
+        {
+            err_msg = $"Failed to get FriendCache from Redis !!! : : errMsg:{e.Message} - {getOwner().toBasicString()}";
+            result.setFail(ServerErrorCode.TryCatchException, err_msg);
+            Log.getLogger().error(err_msg);
+            return result;
+        }
+
+        err_msg = $"Failed to get First Data from Redis !!! : - {getOwner().toBasicString()}";
+        result.setFail(ServerErrorCode.FriendInfoNotExist, err_msg);
+        return result;
+    }
+
+    public async Task<Result> removeFirstCache()
+    {
+        string key = onMakeKey();
+        var database = getDatabase();
+
+        var result = new Result();
+        string err_msg = string.Empty;
+
+        try
+        {
+            bool ret = await database.SortedSetRemoveAsync(key, m_guid);
+            if (!ret)
+            {
+                err_msg = $"Failed to remove First Data from Redis !!! : - {getOwner().toBasicString()}";
+                result.setFail(ServerErrorCode.ServerLogicError, err_msg);
+                Log.getLogger().error(err_msg);
+                return result;
+            }
+        }
+        catch (Exception e)
+        {
+            err_msg = $"Failed to get FriendCache from Redis !!! : : errMsg:{e.Message} - {getOwner().toBasicString()}";
+            result.setFail(ServerErrorCode.TryCatchException, err_msg);
+            Log.getLogger().error(err_msg);
+            return result;
+        }
+
+        return result;
+    }
+
+    public override string toBasicString()
+    {
+        return string.Empty;
+    }
+
+    private string getSuffix()
+    {
+        string[] strings = new string[2];
+        strings[0] = m_guid;
+        strings[1] = m_friend_guid;
+        Array.Sort(strings);
+        string suffix = strings[0] + strings[1];
+        return suffix;
+    }
+}