internal static AuditDbContextConfiguration GetAuditDbContextConfigurationFromXml()
{
var auditConfigurationSection = ConfigurationManager.GetSection("entityFramework.Audit") as AuditConfigurationSection ??
new AuditConfigurationSection();
var entityMapping = new List <AuditTypeInfo>();
foreach (EntityElement entityElement in auditConfigurationSection.Entities)
{
var auditableEntityType = Type.GetType(entityElement.EntityType);
if (auditableEntityType == null)
{
throw new InvalidOperationException($"Auditable entity type '{entityElement.EntityType}' could not be loaded.");
}
var auditEntityType = Type.GetType(entityElement.AuditEntityType);
if (auditEntityType == null)
{
throw new InvalidOperationException($"Audit entity type '{entityElement.AuditEntityType}' could not be loaded.");
}
var auditTypeInfo = new AuditTypeInfo(auditableEntityType, auditEntityType);
entityMapping.Add(auditTypeInfo);
}
return(new AuditDbContextConfiguration(auditConfigurationSection.AuditEnabled, auditConfigurationSection.AuditDateTimeKind, entityMapping.ToArray()));
}
/// <summary>
/// Gets a value indicating whether this context is using proxies.
/// </summary>
////public bool Proxies
////{
//// get
//// {
//// if (this.auditTypes.Count > 0)
//// {
//// var f = this.auditTypes.First();
//// var e = this.Set(f.Value.AuditableEntityType).Create();
//// return e.GetType().Namespace != f.Value.AuditableEntityType.Namespace;
//// }
//// return this.Database.Configuration.ProxyCreationEnabled;
//// }
////}
/// <summary>
/// Registers and type for auditing.
/// </summary>
/// <param name="auditTypeInfo"></param>
public void RegisterAuditType(AuditTypeInfo auditTypeInfo)
{
lock (this.auditTypes)
{
if (auditTypeInfo == null)
{
throw new ArgumentNullException(nameof(auditTypeInfo));
}
// Extract the list of propeties to audit.
var auditEntityType = auditTypeInfo.AuditEntityType;
var auditEntityProperties = auditEntityType.GetRuntimeProperties();
var auditableEntityType = auditTypeInfo.AuditableEntityType;
var auditableEntityProperties = auditableEntityType.GetRuntimeProperties().ToDictionary(x => x.Name);
if (this.auditTypes.ContainsKey(auditableEntityType))
{
throw new ArgumentException($"Type {auditableEntityType.Name} is already registered for auditing.", nameof(auditableEntityType));
}
foreach (var property in auditEntityProperties)
{
if (auditableEntityProperties.ContainsKey(property.Name))
{
if (property.PropertyType == auditableEntityProperties[property.Name].PropertyType)
{
auditTypeInfo.AuditProperties.Add(property.Name);
}
}
}
this.auditTypes.Add(auditableEntityType, auditTypeInfo);
}
}
private IAuditEntity AuditEntity(EntityEntry entityEntry, AuditTypeInfo auditTypeInfo, DateTime auditDateTime, string user)
{
// Create audit entity.
var dbSet = this.Set(auditTypeInfo.AuditEntityType);
var auditEntity = (IAuditEntity)Activator.CreateInstance(auditTypeInfo.AuditEntityType);
//dbSet.Add(auditEntity);
// Copy the properties.
var auditEntityEntry = this.Entry(auditEntity);
if (entityEntry.State == EntityState.Added)
{
foreach (string propertyName in auditTypeInfo.AuditProperties)
{
auditEntityEntry.Property(propertyName).CurrentValue = entityEntry.Property(propertyName).CurrentValue;
}
}
else
{
foreach (string propertyName in auditTypeInfo.AuditProperties)
{
auditEntityEntry.Property(propertyName).CurrentValue = entityEntry.Property(propertyName).OriginalValue;
}
}
// Set the audit columns.
auditEntityEntry.Property(AuditUpdatedColumnName).CurrentValue = auditDateTime;
auditEntityEntry.Property(AuditUserColumnName).CurrentValue = user;
auditEntityEntry.Property(AuditTypeColumnName).CurrentValue = entityEntry.State.ToAuditEntityState();
return(auditEntity);
}
private AuditedEntity AuditEntity(EntityEntry entityEntry, AuditTypeInfo auditTypeInfo, DateTime auditDateTime, string user)
{
// Create audit entity.
dynamic dbSet = this.Set(auditTypeInfo.AuditEntityType);
dynamic auditEntity = (IAuditEntity)Activator.CreateInstance(auditTypeInfo.AuditEntityType);
dbSet.Add(auditEntity);
// Store all temporary values (e.g. not-yet generated primary keys) for later update
var temporaryProperties = entityEntry.Properties.Where(p => p.IsTemporary).ToList();
// Copy the properties.
var auditEntityEntry = this.Entry(auditEntity);
if (entityEntry.State == EntityState.Added)
{
foreach (var propertyName in auditTypeInfo.AuditProperties)
{
auditEntityEntry.Property(propertyName).CurrentValue = entityEntry.Property(propertyName).CurrentValue;
}
}
else
{
foreach (var propertyName in auditTypeInfo.AuditProperties)
{
auditEntityEntry.Property(propertyName).CurrentValue = entityEntry.Property(propertyName).OriginalValue;
}
}
// Set the audit columns.
auditEntityEntry.Property(AuditUpdatedColumnName).CurrentValue = auditDateTime;
auditEntityEntry.Property(AuditUserColumnName).CurrentValue = user;
auditEntityEntry.Property(AuditTypeColumnName).CurrentValue = entityEntry.State.ToAuditEntityState();
return(new AuditedEntity(auditEntity, temporaryProperties));
}
