/// <summary>
/// Does the actual writing of the XML.
/// </summary>
/// <param name="writer">The writer to use to output the event to.</param>
/// <param name="loggingEvent">The event to write.</param>
/// <remarks>
/// <para>
/// Override the base class <see cref="XmlLayoutBase.FormatXml"/> method
/// to write the <see cref="LoggingEvent"/> to the <see cref="XmlWriter"/>.
/// </para>
/// </remarks>
override protected void FormatXml(XmlWriter writer, LoggingEvent loggingEvent)
{
writer.WriteStartElement(m_elmEvent);
writer.WriteAttributeString(ATTR_LOGGER, loggingEvent.LoggerName);
#if NET_2_0 || NETCF_2_0 || MONO_2_0 || UNITY_4_3 || UNITY_5
writer.WriteAttributeString(ATTR_TIMESTAMP, XmlConvert.ToString(loggingEvent.TimeStamp, XmlDateTimeSerializationMode.Local));
#else
writer.WriteAttributeString(ATTR_TIMESTAMP, XmlConvert.ToString(loggingEvent.TimeStamp));
#endif
writer.WriteAttributeString(ATTR_LEVEL, loggingEvent.Level.DisplayName);
writer.WriteAttributeString(ATTR_THREAD, loggingEvent.ThreadName);
if (loggingEvent.Domain != null && loggingEvent.Domain.Length > 0)
{
writer.WriteAttributeString(ATTR_DOMAIN, loggingEvent.Domain);
}
if (loggingEvent.Identity != null && loggingEvent.Identity.Length > 0)
{
writer.WriteAttributeString(ATTR_IDENTITY, loggingEvent.Identity);
}
if (loggingEvent.UserName != null && loggingEvent.UserName.Length > 0)
{
writer.WriteAttributeString(ATTR_USERNAME, loggingEvent.UserName);
}
// Append the message text
writer.WriteStartElement(m_elmMessage);
if (!this.Base64EncodeMessage)
{
#if UNITY_4_3 || UNITY_5
TransformLog4Net.WriteEscapedXmlString(writer, loggingEvent.RenderedMessage, this.InvalidCharReplacement);
#else
Transform.WriteEscapedXmlString(writer, loggingEvent.RenderedMessage, this.InvalidCharReplacement);
#endif
}
else
{
byte[] messageBytes = Encoding.UTF8.GetBytes(loggingEvent.RenderedMessage);
string base64Message = Convert.ToBase64String(messageBytes, 0, messageBytes.Length);
#if UNITY_4_3 || UNITY_5
TransformLog4Net.WriteEscapedXmlString(writer, base64Message, this.InvalidCharReplacement);
#else
Transform.WriteEscapedXmlString(writer, base64Message, this.InvalidCharReplacement);
#endif
}
writer.WriteEndElement();
PropertiesDictionary properties = loggingEvent.GetProperties();
// Append the properties text
if (properties.Count > 0)
{
writer.WriteStartElement(m_elmProperties);
foreach (System.Collections.DictionaryEntry entry in properties)
{
writer.WriteStartElement(m_elmData);
#if UNITY_4_3 || UNITY_5
writer.WriteAttributeString(ATTR_NAME, TransformLog4Net.MaskXmlInvalidCharacters((string)entry.Key, this.InvalidCharReplacement));
#else
writer.WriteAttributeString(ATTR_NAME, Transform.MaskXmlInvalidCharacters((string)entry.Key, this.InvalidCharReplacement));
#endif
// Use an ObjectRenderer to convert the object to a string
string valueStr = null;
if (!this.Base64EncodeProperties)
{
#if UNITY_4_3 || UNITY_5
valueStr = TransformLog4Net.MaskXmlInvalidCharacters(loggingEvent.Repository.RendererMap.FindAndRender(entry.Value), this.InvalidCharReplacement);
#else
valueStr = Transform.MaskXmlInvalidCharacters(loggingEvent.Repository.RendererMap.FindAndRender(entry.Value), this.InvalidCharReplacement);
#endif
}
else
{
byte[] propertyValueBytes = Encoding.UTF8.GetBytes(loggingEvent.Repository.RendererMap.FindAndRender(entry.Value));
valueStr = Convert.ToBase64String(propertyValueBytes, 0, propertyValueBytes.Length);
}
writer.WriteAttributeString(ATTR_VALUE, valueStr);
writer.WriteEndElement();
}
writer.WriteEndElement();
}
string exceptionStr = loggingEvent.GetExceptionString();
if (exceptionStr != null && exceptionStr.Length > 0)
{
// Append the stack trace line
writer.WriteStartElement(m_elmException);
#if UNITY_4_3 || UNITY_5
TransformLog4Net.WriteEscapedXmlString(writer, exceptionStr, this.InvalidCharReplacement);
#else
Transform.WriteEscapedXmlString(writer, exceptionStr, this.InvalidCharReplacement);
#endif
writer.WriteEndElement();
}
if (LocationInfo)
{
LocationInfo locationInfo = loggingEvent.LocationInformation;
writer.WriteStartElement(m_elmLocation);
writer.WriteAttributeString(ATTR_CLASS, locationInfo.ClassName);
writer.WriteAttributeString(ATTR_METHOD, locationInfo.MethodName);
writer.WriteAttributeString(ATTR_FILE, locationInfo.FileName);
writer.WriteAttributeString(ATTR_LINE, locationInfo.LineNumber);
writer.WriteEndElement();
}
writer.WriteEndElement();
}
/* Example log4j schema event
*
* <log4j:event logger="first logger" level="ERROR" thread="Thread-3" timestamp="1051494121460">
* <log4j:message><![CDATA[errormsg 3]]></log4j:message>
* <log4j:NDC><![CDATA[third]]></log4j:NDC>
* <log4j:MDC>
* <log4j:data name="some string" value="some valuethird"/>
* </log4j:MDC>
* <log4j:throwable><![CDATA[java.lang.Exception: someexception-third
* at org.apache.log4j.chainsaw.Generator.run(Generator.java:94)
* ]]></log4j:throwable>
* <log4j:locationInfo class="org.apache.log4j.chainsaw.Generator"
* method="run" file="Generator.java" line="94"/>
* <log4j:properties>
* <log4j:data name="log4jmachinename" value="windows"/>
* <log4j:data name="log4japp" value="udp-generator"/>
* </log4j:properties>
* </log4j:event>
*
*/
/* Since log4j 1.3 the log4j:MDC has been combined into the log4j:properties element */
/// <summary>
/// Actually do the writing of the xml
/// </summary>
/// <param name="writer">the writer to use</param>
/// <param name="loggingEvent">the event to write</param>
/// <remarks>
/// <para>
/// Generate XML that is compatible with the log4j schema.
/// </para>
/// </remarks>
override protected void FormatXml(XmlWriter writer, LoggingEvent loggingEvent)
{
// Translate logging events for log4j
// Translate hostname property
if (loggingEvent.LookupProperty(LoggingEvent.HostNameProperty) != null &&
loggingEvent.LookupProperty("log4jmachinename") == null)
{
loggingEvent.GetProperties()["log4jmachinename"] = loggingEvent.LookupProperty(LoggingEvent.HostNameProperty);
}
// translate appdomain name
if (loggingEvent.LookupProperty("log4japp") == null &&
loggingEvent.Domain != null &&
loggingEvent.Domain.Length > 0)
{
loggingEvent.GetProperties()["log4japp"] = loggingEvent.Domain;
}
// translate identity name
if (loggingEvent.Identity != null &&
loggingEvent.Identity.Length > 0 &&
loggingEvent.LookupProperty(LoggingEvent.IdentityProperty) == null)
{
loggingEvent.GetProperties()[LoggingEvent.IdentityProperty] = loggingEvent.Identity;
}
// translate user name
if (loggingEvent.UserName != null &&
loggingEvent.UserName.Length > 0 &&
loggingEvent.LookupProperty(LoggingEvent.UserNameProperty) == null)
{
loggingEvent.GetProperties()[LoggingEvent.UserNameProperty] = loggingEvent.UserName;
}
// Write the start element
writer.WriteStartElement("log4j:event");
writer.WriteAttributeString("logger", loggingEvent.LoggerName);
// Calculate the timestamp as the number of milliseconds since january 1970
//
// We must convert the TimeStamp to UTC before performing any mathematical
// operations. This allows use to take into account discontinuities
// caused by daylight savings time transitions.
TimeSpan timeSince1970 = loggingEvent.TimeStamp.ToUniversalTime() - s_date1970;
writer.WriteAttributeString("timestamp", XmlConvert.ToString((long)timeSince1970.TotalMilliseconds));
writer.WriteAttributeString("level", loggingEvent.Level.DisplayName);
writer.WriteAttributeString("thread", loggingEvent.ThreadName);
// Append the message text
writer.WriteStartElement("log4j:message");
#if UNITY_4_3
TransformLog4Net.WriteEscapedXmlString(writer, loggingEvent.RenderedMessage, this.InvalidCharReplacement);
#else
Transform.WriteEscapedXmlString(writer, loggingEvent.RenderedMessage, this.InvalidCharReplacement);
#endif
writer.WriteEndElement();
object ndcObj = loggingEvent.LookupProperty("NDC");
if (ndcObj != null)
{
string valueStr = loggingEvent.Repository.RendererMap.FindAndRender(ndcObj);
if (valueStr != null && valueStr.Length > 0)
{
// Append the NDC text
writer.WriteStartElement("log4j:NDC");
#if UNITY_4_3
TransformLog4Net.WriteEscapedXmlString(writer, valueStr, this.InvalidCharReplacement);
#else
Transform.WriteEscapedXmlString(writer, valueStr, this.InvalidCharReplacement);
#endif
writer.WriteEndElement();
}
}
// Append the properties text
PropertiesDictionary properties = loggingEvent.GetProperties();
if (properties.Count > 0)
{
writer.WriteStartElement("log4j:properties");
foreach (System.Collections.DictionaryEntry entry in properties)
{
writer.WriteStartElement("log4j:data");
writer.WriteAttributeString("name", (string)entry.Key);
// Use an ObjectRenderer to convert the object to a string
string valueStr = loggingEvent.Repository.RendererMap.FindAndRender(entry.Value);
writer.WriteAttributeString("value", valueStr);
writer.WriteEndElement();
}
writer.WriteEndElement();
}
string exceptionStr = loggingEvent.GetExceptionString();
if (exceptionStr != null && exceptionStr.Length > 0)
{
// Append the stack trace line
writer.WriteStartElement("log4j:throwable");
#if UNITY_4_3
TransformLog4Net.WriteEscapedXmlString(writer, exceptionStr, this.InvalidCharReplacement);
#else
Transform.WriteEscapedXmlString(writer, exceptionStr, this.InvalidCharReplacement);
#endif
writer.WriteEndElement();
}
if (LocationInfo)
{
LocationInfo locationInfo = loggingEvent.LocationInformation;
writer.WriteStartElement("log4j:locationInfo");
writer.WriteAttributeString("class", locationInfo.ClassName);
writer.WriteAttributeString("method", locationInfo.MethodName);
writer.WriteAttributeString("file", locationInfo.FileName);
writer.WriteAttributeString("line", locationInfo.LineNumber);
writer.WriteEndElement();
}
writer.WriteEndElement();
}