public async Task TestAddLogRecord()
        {
            var          utcnow        = DateTime.UtcNow.Date;
            var          mysqlLogStore = new MySqlLogStore(() => utcnow);
            const string appPath       = "###rather_not_existing_application_path###";
            var          hash          = BitConverter.ToString(MD5.Create().ComputeHash(Encoding.UTF8.GetBytes(appPath))).Replace("-", String.Empty);

            var logrec = new LogRecord {
                LoggerName              = "TestLogger",
                ApplicationPath         = appPath,
                LogLevel                = LogRecord.ELogLevel.Error,
                TimeUtc                 = DateTime.UtcNow,
                ProcessId               = 123,
                ThreadId                = 456,
                Server                  = "TestServer",
                Identity                = "TestIdentity",
                CorrelationId           = Guid.NewGuid().ToString(),
                Message                 = "Test log message to store in the log",
                ExceptionMessage        = "Test exception log message",
                ExceptionType           = "TestException",
                ExceptionAdditionalInfo = "Additinal info for the test exception",
                AdditionalFields        = new Dictionary <String, Object>
                {
                    { "Host", "testhost.com" },
                    { "LoggedUser", "testloggeduser" },
                    { "HttpStatusCode", "200.1" },
                    { "Url", "http://testhost.com" },
                    { "Referer", "http://prevtesthost.com" },
                    { "ClientIP", null },
                    { "RequestData", "test test test" },
                    { "ResponseData", null },
                    { "ServiceName", "TestService" },
                    { "ServiceDisplayName", "Test service generating logs" },
                    { "NotExisting", null }
                },
                PerformanceData = new Dictionary <String, float>
                {
                    { "CPU", 2.0f },
                    { "Memory", 20000000f }
                }
            };

            // add log
            await mysqlLogStore.AddLogRecordAsync(logrec);

            using (var conn = new MySqlConnection(ConfigurationManager.ConnectionStrings["mysqlconn"].ConnectionString))
            {
                conn.Open();

                // check if app tables were created
                var tables = conn.Query <String>("select table_name from information_schema.tables where table_schema = @db", new { db = conn.Database }).ToArray();

                Assert.Contains(MySqlLogStore.AppLogTablePrefix + hash, tables, StringComparer.OrdinalIgnoreCase);

                // check partitions
                var expectedPartitionNames = new[] { String.Format("{0}{1:yyyyMMdd}", Partition.PartitionPrefix, utcnow.Date.AddDays(1)),
                                                     String.Format("{0}{1:yyyyMMdd}", Partition.PartitionPrefix, utcnow.Date.AddDays(2)) };
                foreach (var prefix in new[] { MySqlLogStore.AppLogTablePrefix })
                {
                    var partitions = conn.Query <String>("select partition_name From information_schema.partitions where table_name = @tableName and table_schema = @db order by partition_name",
                                                         new { tableName = prefix + hash, db = conn.Database });
                    Assert.Equal(expectedPartitionNames, partitions);
                }

                // check logs content
                var dbLogRecs = conn.Query <DbAppLogRecord>("select * from " + MySqlLogStore.AppLogTablePrefix + hash).ToArray();

                Assert.True(dbLogRecs.Length == 1);
                var dbLogRec = dbLogRecs[0];

                Assert.Equal(logrec.LoggerName, dbLogRec.LoggerName);
                Assert.Equal(logrec.ApplicationPath, dbLogRec.ApplicationPath);
                Assert.Equal(logrec.LogLevel, dbLogRec.LogLevel);
                Assert.Equal(logrec.TimeUtc.ToShortDateString(), dbLogRec.TimeUtc.ToShortDateString());
                Assert.Equal(logrec.ProcessId, dbLogRec.ProcessId);
                Assert.Equal(logrec.ThreadId, dbLogRec.ThreadId);
                Assert.Equal(logrec.Server, dbLogRec.Server);
                Assert.Equal(logrec.Identity, dbLogRec.Identity);
                Assert.Equal(logrec.CorrelationId, dbLogRec.CorrelationId);
                Assert.Equal(logrec.Message, dbLogRec.Message);
                Assert.Equal(logrec.ExceptionMessage, dbLogRec.ExceptionMessage);
                Assert.Equal(logrec.ExceptionType, dbLogRec.ExceptionType);
                Assert.Equal(logrec.ExceptionAdditionalInfo, dbLogRec.ExceptionAdditionalInfo);
                Assert.Equal((String)logrec.AdditionalFields["Host"], dbLogRec.Host);
                Assert.Equal((String)logrec.AdditionalFields["LoggedUser"], dbLogRec.LoggedUser);
                Assert.Equal((String)logrec.AdditionalFields["HttpStatusCode"], dbLogRec.HttpStatusCode);
                Assert.Equal((String)logrec.AdditionalFields["Url"], dbLogRec.Url);
                Assert.Equal((String)logrec.AdditionalFields["Referer"], dbLogRec.Referer);
                Assert.Equal((String)logrec.AdditionalFields["ClientIP"], dbLogRec.ClientIP);
                Assert.Equal((String)logrec.AdditionalFields["RequestData"], dbLogRec.RequestData);
                Assert.Equal((String)logrec.AdditionalFields["ResponseData"], dbLogRec.ResponseData);
                Assert.Equal((String)logrec.AdditionalFields["ServiceName"], dbLogRec.ServiceName);
                Assert.Equal((String)logrec.AdditionalFields["ServiceDisplayName"], dbLogRec.ServiceDisplayName);

                var dbPerfLogs = JsonConvert.DeserializeObject <IDictionary <String, float> >(dbLogRec.PerfData);
                Assert.True(dbPerfLogs.Count == 2);

                float r;
                Assert.True(dbPerfLogs.TryGetValue("CPU", out r));
                Assert.Equal(r, logrec.PerformanceData["CPU"]);

                Assert.True(dbPerfLogs.TryGetValue("Memory", out r));
                Assert.Equal(r, logrec.PerformanceData["Memory"]);
            }
        }
        public async Task LogFilteringTest()
        {
            // add a test log record
            var          utcnow        = DateTime.UtcNow.Date;
            var          mysqlLogStore = new MySqlLogStore(() => utcnow);
            const string appPath       = "###rather_not_existing_application_path2###";

            var logrec = new LogRecord {
                LoggerName              = "TestLogger",
                ApplicationPath         = appPath,
                LogLevel                = LogRecord.ELogLevel.Error,
                TimeUtc                 = DateTime.UtcNow,
                ProcessId               = 123,
                ThreadId                = 456,
                Server                  = "TestServer",
                Identity                = "TestIdentity",
                CorrelationId           = Guid.NewGuid().ToString(),
                Message                 = "Test log message to store in the log",
                ExceptionMessage        = "Test exception log message",
                ExceptionType           = "TestException",
                ExceptionAdditionalInfo = "Additinal info for the test exception",
                AdditionalFields        = new Dictionary <String, Object>
                {
                    { "Host", "testhost.com" },
                    { "LoggedUser", "testloggeduser" },
                    { "HttpStatusCode", "200.1" },
                    { "Url", "http://testhost.com" },
                    { "Referer", "http://prevtesthost.com" },
                    { "ClientIP", null },
                    { "RequestData", "test test test" },
                    { "ResponseData", null },
                    { "ServiceName", "TestService" },
                    { "ServiceDisplayName", "Test service generating logs" },
                    { "NotExisting", null }
                },
                PerformanceData = new Dictionary <String, float>
                {
                    { "CPU", 2.0f },
                    { "Memory", 20000000f }
                }
            };

            // add log
            await mysqlLogStore.AddLogRecordAsync(logrec);

            var searchResults = await mysqlLogStore.FilterLogsAsync(new LogSearchCriteria {
                FromUtc         = DateTime.UtcNow.AddMinutes(-10),
                ToUtc           = DateTime.UtcNow.AddMinutes(10),
                ApplicationPath = appPath,
                Levels          = new[] { LogRecord.ELogLevel.Error, LogRecord.ELogLevel.Info },
                Limit           = 10,
                Offset          = 0,
                Server          = "TestServer",
                Keywords        = new KeywordsParsed()
                {
                    Url = "http://testhost.com"
                }
            });

            Assert.NotNull(searchResults.FoundItems);
            var foundItems = searchResults.FoundItems.ToArray();

            Assert.True(foundItems.Length == 1);
            var logrec2 = foundItems[0];

            Assert.Equal(logrec.LoggerName, logrec2.LoggerName);
            Assert.Equal(logrec.ApplicationPath, logrec2.ApplicationPath);
            Assert.Equal(logrec.LogLevel, logrec2.LogLevel);
            Assert.Equal(logrec.TimeUtc.ToShortDateString(), logrec2.TimeUtc.ToShortDateString());
            Assert.Equal(logrec.ProcessId, logrec2.ProcessId);
            Assert.Equal(logrec.ThreadId, logrec2.ThreadId);
            Assert.Equal(logrec.Server, logrec2.Server);
            Assert.Equal(logrec.Identity, logrec2.Identity);
            Assert.Equal(logrec.CorrelationId, logrec2.CorrelationId);
            Assert.Equal(logrec.Message, logrec2.Message);
            Assert.Equal(logrec.ExceptionMessage, logrec2.ExceptionMessage);
            Assert.Equal(logrec.ExceptionType, logrec2.ExceptionType);
            Assert.Equal(logrec.ExceptionAdditionalInfo, logrec2.ExceptionAdditionalInfo);
            Assert.Equal(logrec.AdditionalFields["Host"], logrec2.AdditionalFields["Host"]);
            Assert.Equal(logrec.AdditionalFields["LoggedUser"], logrec2.AdditionalFields["LoggedUser"]);
            Assert.Equal(logrec.AdditionalFields["HttpStatusCode"], logrec2.AdditionalFields["HttpStatusCode"]);
            Assert.Equal(logrec.AdditionalFields["Url"], logrec2.AdditionalFields["Url"]);
            Assert.Equal(logrec.AdditionalFields["Referer"], logrec2.AdditionalFields["Referer"]);
            Assert.Equal(logrec.AdditionalFields["RequestData"], logrec2.AdditionalFields["RequestData"]);
            Assert.Equal(logrec.AdditionalFields["ServiceName"], logrec2.AdditionalFields["ServiceName"]);
            Assert.Equal(logrec.AdditionalFields["ServiceDisplayName"], logrec2.AdditionalFields["ServiceDisplayName"]);
        }