Clog: Client Logging, Silverlight Edition

/*
<File>
	<Copyright>Copyright © 2007, Daniel Vaughan. All rights reserved.</Copyright>
	<License see="prj:///Documentation/License.txt"/>
	<Owner Name="Daniel Vaughan" Email="dbvaughan@gmail.com"/>
	<CreationDate>2007/11/19 20:00</CreationDate>
	<LastSubmissionDate>$Date: $</LastSubmissionDate>
	<Version>$Revision: $</Version>
</File>
*/

using System;
using System.ComponentModel;
using System.Web;
using System.Web.Script.Services;
using System.Web.Services;
using Orpius.Logging.LogEntries;

namespace Orpius.Logging
{

	/// <summary>
	/// Provides clients with the ability
	/// to log to the internal logging system.
	/// </summary>
	[WebService(Namespace = "http://orpius.com/")]
	[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
	[ToolboxItem(false)]
	[ScriptService]
	public class ClientLoggingService : System.Web.Services.WebService
	{
		/// <summary>
		/// Gets the configuration for the specified log.
		/// </summary>
		/// <param name="logName">Name of the log.</param>
		/// <returns>Configuration data that will
		/// expire after a predefined period.</returns>
		[WebMethod]
		[ScriptMethod(ResponseFormat = ResponseFormat.Json)]
		public ClientConfigurationData GetConfiguration(string logName)
		{
			ClientConfigurationData configurationData = new ClientConfigurationData();
			configurationData.LogLevel = (int)Log.GetLogLevel(logName);
			/* No enums in Silverlight 1.1 alpha yet. */
			//configurationData.LogLevel = Log.GetLogLevel(logName); 
			configurationData.LogEnabled
				= Log.IsEnabled(LogEntryOrigin.Client);
				//&& configurationData.LogLevel != LogLevel.None;
			return configurationData;
		}

		/// <summary>
		/// Writes the entry to the current Log.
		/// </summary>
		/// <param name="entryData">The entry data to write to the log.</param>
		/// <returns>An empty string for now.</returns>
		[WebMethod]
		[ScriptMethod(ResponseFormat = ResponseFormat.Json)]
		/* decimal not supported. void return type breaks it. */
		public string WriteEntry(LogEntryData entryData)
		{

			try
			{
				ClientLogEntry logEntry = new ClientLogEntry(entryData);
				logEntry.IpAddress = HttpContext.Current.Request.UserHostAddress;
				Log.LogMessage(logEntry);
			}
			catch (Exception ex)
			{
				System.Diagnostics.Debug.Fail("Unable to write to log.", 
					ex.Message + Environment.NewLine + ex.StackTrace);
				throw;
			}
			return string.Empty;
		}

		/// <summary>
		/// Gets the minimum log level. If a request to write
		/// to the log is at a lower level than this threshold
		/// value, the request will be ignored.
		/// </summary>
		/// <param name="logName">Name of the log.</param>
		/// <returns>The threshold log level.</returns>
		[WebMethod]
		[ScriptMethod(ResponseFormat = ResponseFormat.Json)]
		public LogLevel GetMinimumLogLevel(string logName)
		{
			return Log.GetLogLevel(logName);
		}
	}
}