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using Npgsql;

namespace NpgsqlRest;

public static class NpgsqlRestLogger

{

private const string LogPattern = "{where}:\n{message}";

internal static readonly LogDefineOptions LogDefineOptions = new() { SkipEnabledCheck = true };

private static readonly Action<ILogger, string?, string, Exception?> __LogInformationCallback =

LoggerMessage.Define<string?, string>(LogLevel.Information, 0, LogPattern, LogDefineOptions);

private static readonly Action<ILogger, string?, string, Exception?> __LogWarningCallback =

LoggerMessage.Define<string?, string>(LogLevel.Warning, 1, LogPattern, LogDefineOptions);

private static readonly Action<ILogger, string?, string, Exception?> __LogTraceCallback =

LoggerMessage.Define<string?, string>(LogLevel.Trace, 4, LogPattern, LogDefineOptions);

private static void LogInformation(ILogger logger, string? where, string message)

{

if (logger.IsEnabled(LogLevel.Information))

{

__LogInformationCallback(logger, where, message, null);

}

private static void LogWarning(ILogger logger, string? where, string message)

{

if (logger.IsEnabled(LogLevel.Warning))

{

__LogWarningCallback(logger, where, message, null);

}

private static void LogTrace(ILogger logger, string? where, string message)

{

if (logger.IsEnabled(LogLevel.Trace))

{

__LogTraceCallback(logger, where, message, null);

}

public static void LogEndpoint(RoutineEndpoint endpoint, string parameters, string command)

{

if (Logger?.IsEnabled(LogLevel.Debug) is true && endpoint.LogCallback is not null)

{

endpoint.LogCallback(Logger, parameters, command, null);

}

#pragma warning disable IDE0079 // Remove unnecessary suppression

[System.Diagnostics.CodeAnalysis.SuppressMessage("Usage", "CA2254:Template should be a static expression", Justification = "<Pending>")]

#pragma warning restore IDE0079 // Remove unnecessary suppression

public static void LogConnectionNotice(PostgresNotice notice, PostgresConnectionNoticeLoggingMode mode, string? context = null)

{

if (Logger is null)

{

return;

}

LogConnectionNotice(Logger, notice, mode, context);

}

/// <summary>

/// Logs a connection notice through the supplied <paramref name="logger"/> rather than the static

/// <see cref="Logger"/>. Used by the SQL test runner so notices route through its own log channel

/// (e.g. "NpgsqlRestTest"). The log level still follows the notice severity (info/notice => Information,

/// warning => Warning, otherwise Trace/Verbose) and the format is identical to the normal-app path.

/// </summary>

#pragma warning disable IDE0079 // Remove unnecessary suppression

[System.Diagnostics.CodeAnalysis.SuppressMessage("Usage", "CA2254:Template should be a static expression", Justification = "<Pending>")]

#pragma warning restore IDE0079 // Remove unnecessary suppression

public static void LogConnectionNotice(ILogger logger, PostgresNotice notice, PostgresConnectionNoticeLoggingMode mode, string? context = null)

{

if (logger is null)

{

return;

}

// Optional caller context (e.g. the SQL test runner's current test file) prefixed to the location,

// so notices can be attributed to their source. Null in normal operation → format unchanged.

string? tag = string.IsNullOrEmpty(context) ? null : $"[{context}] ";

if (notice.IsInfo() || notice.IsNotice())

{

if (mode == PostgresConnectionNoticeLoggingMode.MessageOnly)

{

logger.LogInformation(string.Concat(tag, notice.MessageText));

}

else if (mode == PostgresConnectionNoticeLoggingMode.FirstStackFrameAndMessage)

{

LogInformation(logger, string.Concat(tag, notice?.Where?.Split('\n').LastOrDefault() ?? ""), notice?.MessageText!);

}

else if (mode == PostgresConnectionNoticeLoggingMode.FullStackAndMessage)

{

LogInformation(logger, string.Concat(tag, notice?.Where), notice?.MessageText!);

}

else if (notice.IsWarning())

{

if (mode == PostgresConnectionNoticeLoggingMode.MessageOnly)

{

logger.LogWarning(string.Concat(tag, notice.MessageText));

}

else if (mode == PostgresConnectionNoticeLoggingMode.FirstStackFrameAndMessage)

{

LogWarning(logger, string.Concat(tag, notice?.Where?.Split('\n').Last() ?? ""), notice?.MessageText!);

}

else if (mode == PostgresConnectionNoticeLoggingMode.FullStackAndMessage)

{

LogWarning(logger, string.Concat(tag, notice?.Where), notice?.MessageText!);

}

else

{

if (mode == PostgresConnectionNoticeLoggingMode.MessageOnly)

{

logger.LogTrace(string.Concat(tag, notice.MessageText));

}

else if (mode == PostgresConnectionNoticeLoggingMode.FirstStackFrameAndMessage)

{

LogTrace(logger, string.Concat(tag, notice?.Where?.Split('\n').Last() ?? ""), notice?.MessageText!);

}

else if (mode == PostgresConnectionNoticeLoggingMode.FullStackAndMessage)

{

LogTrace(logger, string.Concat(tag, notice?.Where), notice?.MessageText!);

}

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