/// <summary>
/// Called after an inbound message has been received but before the message is dispatched
/// to the intended operation.
/// </summary>
/// <param name="request">The request message.</param>
/// <param name="channel">The incoming channel.</param>
/// <param name="instanceContext">The current service instance.</param>
/// <returns>
/// An instance of <see cref="WcfExecutionContext" />. This object is passed back to method
/// <see cref="BeforeSendReply(ref Message, object)" />.
/// </returns>
public object AfterReceiveRequest(ref Message request, IClientChannel channel, InstanceContext instanceContext)
{
/*
*
*/
MessageBuffer buffer = request.CreateBufferedCopy(Int32.MaxValue);
request = buffer.CreateMessage();
/*
*
*/
WcfExecutionContext ctx = WcfExecutionContext.Read(request);
/*
* TODO: pull from config
*/
var config = new MethodRawLoggingConfiguration()
{
Enabled = true, Request = true, Response = true
};
if (config.Enabled == true)
{
string message = ToMessage(config.Response, buffer);
Journal(ctx, false, message);
}
return(ctx);
}
/// <summary>
/// Looks for 'svc:ExecutionHeader' header in the message. If the header is
/// not present, will throw exception.
/// </summary>
/// <param name="message">WCF message.</param>
/// <returns>
/// Always returns an instance of <see cref="WcfExecutionContext" />.
/// </returns>
public static WcfExecutionContext Read(Message message)
{
#region Validations
if (message == null)
{
throw new ArgumentNullException(nameof(message));
}
#endregion
int ix = message.Headers.FindHeader(HeaderName, Zn.Namespace);
// TODO: check ix != -1
var content = message.Headers.GetHeader <XmlNode[]>(ix);
// TODO: check content.Length
WcfExecutionContext ctx = new WcfExecutionContext();
ctx.ActivityId = new Guid(content[0].InnerText);
ctx.AccessToken = content[1].InnerText;
ctx.ExecutionId = new Guid(content[2].InnerText);
ctx.Action = content[3].InnerText;
ctx.MomentStart = DateTime.ParseExact(content[4].InnerText, "o", CultureInfo.InvariantCulture);
return(ctx);
}
/// <summary />
public object AfterReceiveRequest(ref Message request, IClientChannel channel, InstanceContext instanceContext)
{
/*
*
*/
WcfExecutionContext ctx = new WcfExecutionContext();
ctx.ActivityId = Guid.Empty;
ctx.AccessToken = null;
ctx.ExecutionId = Guid.NewGuid();
ctx.Action = request.Headers.Action;
ctx.MomentStart = PreciseDateTime.UtcNow;
/*
* Don't read the header using a deserializer, because we don't want to trust
* the request.
*/
int ix = request.Headers.FindHeader("EndpointHeader", Zn.Namespace);
if (ix > -1)
{
var xr = request.Headers.GetReaderAtHeader(ix);
XmlNamespaceManager manager = new XmlNamespaceManager(new NameTable());
manager.AddNamespace("zn", Zn.Namespace);
XmlDocument doc = new XmlDocument();
doc.Load(xr);
var activityElem = doc.DocumentElement.SelectSingleNode(" zn:ActivityId ", manager);
if (activityElem != null)
{
try
{
ctx.ActivityId = new Guid(activityElem.InnerText);
}
catch
{
// Snuff!
}
}
var accessTokenElem = doc.DocumentElement.SelectSingleNode(" zn:AccessToken ", manager);
if (accessTokenElem != null)
{
ctx.AccessToken = accessTokenElem.InnerText;
}
}
/*
*
*/
request.Headers.Add(ctx);
return(ctx);
}
/// <summary>
/// Writes the message to the database.
/// </summary>
/// <param name="context">Current execution context.</param>
/// <param name="direction">Direction of message.</param>
/// <param name="message">XML message.</param>
private static void Journal(WcfExecutionContext context, bool direction, string message)
{
const string Database = "SqlServerLogging";
if (ConfigurationManager.ConnectionStrings[Database] == null)
{
throw new ZincException(ER.ServiceModel_SqlServer_ConnectionMissing, Database);
}
/*
*
*/
SqlConnection conn = new SqlConnection();
conn.ConnectionString = ConfigurationManager.ConnectionStrings[Database].ConnectionString;
try
{
conn.Open();
}
catch (SqlException ex)
{
throw new ZincException(ER.ServiceModel_SqlServer_Open, ex, Database);
}
catch (ConfigurationErrorsException ex)
{
throw new ZincException(ER.ServiceModel_SqlServer_Open, ex, Database);
}
catch (InvalidOperationException ex)
{
throw new ZincException(ER.ServiceModel_SqlServer_Open, ex, Database);
}
/*
*
*/
SqlCommand cmd = conn.CreateCommand();
cmd.CommandText = "insert into ZN_SOAP_JOURNAL ( Application, ActivityId, AccessToken, ExecutionId, Action, Direction, XmlMessage, Moment )"
+ "values ( @Application, @ActivityId, @AccessToken, @ExecutionId, @Action, @Direction, @XmlMessage, @Moment ) ";
cmd.CommandType = CommandType.Text;
cmd.Parameters.Add("@Application", SqlDbType.VarChar).Value = App.Name;
cmd.Parameters.Add("@ActivityId", SqlDbType.UniqueIdentifier).Value = context.ActivityId;
cmd.Parameters.Add("@AccessToken", SqlDbType.VarChar).Value = context.AccessToken;
cmd.Parameters.Add("@ExecutionId", SqlDbType.UniqueIdentifier).Value = context.ExecutionId;
cmd.Parameters.Add("@Action", SqlDbType.NVarChar).Value = context.Action;
cmd.Parameters.Add("@Direction", SqlDbType.Bit).Value = direction;
cmd.Parameters.Add("@XmlMessage", SqlDbType.Xml).Value = message;
cmd.Parameters.Add("@Moment", SqlDbType.DateTime).Value = DateTime.UtcNow;
try
{
cmd.ExecuteNonQuery();
}
catch (SqlException ex)
{
throw new ZincException(ER.ServiceModel_SqlServer_ExecuteNonQuery, ex, Database);
}
/*
*
*/
try
{
conn.Close();
}
catch (SqlException)
{
}
}
