/// <summary>
/// Shoulds the intercept.
/// </summary>
/// <param name="invocation">The invocation.</param>
/// <param name="auditLog">The audit log.</param>
/// <param name="auditLogAction">The audit log action.</param>
/// <returns><c>true</c> if XXXX, <c>false</c> otherwise.</returns>
protected virtual bool ShouldIntercept(
IMethodInvocation invocation,
out AuditLogInfo auditLog,
out AuditLogActionInfo auditLogAction)
{
auditLog = null;
auditLogAction = null;
if (CrossCuttingConcerns.IsApplied(invocation.TargetObject, CrossCuttingConcerns.Auditing))
{
return(false);
}
// 如果没有获取到 Scop，则返回 false。
var auditLogScope = _auditingManager.Current;
if (auditLogScope == null)
{
return(false);
}
// 进行二次判断是否需要存储审计日志。
if (!_auditingHelper.ShouldSaveAudit(invocation.Method))
{
return(false);
}
// 构建审计日志信息。
auditLog = auditLogScope.Log;
auditLogAction = _auditingHelper.CreateAuditLogAction(
auditLog,
invocation.TargetObject.GetType(),
invocation.Method,
invocation.Arguments
);
return(true);
}
/// <summary>
/// Merges the entity changes.
/// </summary>
/// <param name="auditLog">The audit log.</param>
protected virtual void MergeEntityChanges(AuditLogInfo auditLog)
{
var changeGroups = auditLog.EntityChanges
.Where(e => e.ChangeType == EntityChangeType.Updated)
.GroupBy(e => new { e.EntityTypeFullName, e.EntityId })
.ToList();
foreach (var changeGroup in changeGroups)
{
if (changeGroup.Count() <= 1)
{
continue;
}
var firstEntityChange = changeGroup.First();
foreach (var entityChangeInfo in changeGroup)
{
if (entityChangeInfo == firstEntityChange)
{
continue;
}
firstEntityChange.Merge(entityChangeInfo);
auditLog.EntityChanges.Remove(entityChangeInfo);
}
}
}
/// <summary>
/// Creates the audit log action.
/// </summary>
/// <param name="auditLog">The audit log.</param>
/// <param name="type">The type.</param>
/// <param name="method">The method.</param>
/// <param name="arguments">The arguments.</param>
/// <returns>AuditLogActionInfo.</returns>
public virtual AuditLogActionInfo CreateAuditLogAction(
AuditLogInfo auditLog,
Type type,
MethodInfo method,
object[] arguments)
{
return(CreateAuditLogAction(auditLog, type, method, CreateArgumentsDictionary(method, arguments)));
}
/// <summary>
/// Initializes a new instance of the <see cref="DisposableSaveHandle"/> class.
/// </summary>
/// <param name="auditingManager">The auditing manager.</param>
/// <param name="scope">The scope.</param>
/// <param name="auditLog">The audit log.</param>
/// <param name="stopWatch">The stop watch.</param>
public DisposableSaveHandle(
AuditingManager auditingManager,
IDisposable scope,
AuditLogInfo auditLog,
Stopwatch stopWatch)
{
_auditingManager = auditingManager;
_scope = scope;
AuditLog = auditLog;
StopWatch = stopWatch;
}
/// <summary>
/// Creates the audit log information.
/// </summary>
/// <returns>AuditLogInfo.</returns>
public virtual AuditLogInfo CreateAuditLogInfo()
{
var auditInfo = new AuditLogInfo
{
ApplicationName = Options.ApplicationName,
UserId = CurrentUser.Id,
UserName = CurrentUser.UserName,
ClientId = CurrentClient.Id,
CorrelationId = CorrelationIdProvider.Get(),
ExecutionTime = DateTime.Now
};
ExecutePreContributors(auditInfo);
return(auditInfo);
}
/// <summary>
/// Executes the pre contributors.
/// </summary>
/// <param name="auditLogInfo">The audit log information.</param>
protected virtual void ExecutePreContributors(AuditLogInfo auditLogInfo)
{
using (var scope = ServiceProvider.CreateScope())
{
var context = new AuditLogContributionContext(scope.ServiceProvider, auditLogInfo);
foreach (var contributor in Options.Contributors)
{
try
{
contributor.PreContribute(context);
}
catch (Exception ex)
{
Logger.LogException(ex, LogLevel.Warning);
}
}
}
}
/// <summary>
/// Creates the audit log action.
/// </summary>
/// <param name="auditLog">The audit log.</param>
/// <param name="type">The type.</param>
/// <param name="method">The method.</param>
/// <param name="arguments">The arguments.</param>
/// <returns>AuditLogActionInfo.</returns>
public virtual AuditLogActionInfo CreateAuditLogAction(
AuditLogInfo auditLog,
Type type,
MethodInfo method,
IDictionary <string, object> arguments)
{
var actionInfo = new AuditLogActionInfo
{
ServiceName = type != null
? type.FullName
: "",
MethodName = method.Name,
// 序列化参数信息。
Parameters = SerializeConvertArguments(arguments),
ExecutionTime = DateTime.Now
};
//TODO Execute contributors
return(actionInfo);
}
/// <summary>
/// Saves the asynchronous.
/// </summary>
/// <param name="auditInfo">The audit information.</param>
/// <returns>Task.</returns>
public Task SaveAsync(AuditLogInfo auditInfo)
{
Logger.LogInformation(auditInfo.ToString());
return(Task.FromResult(0));
}
/// <summary>
/// Initializes a new instance of the <see cref="AuditLogContributionContext"/> class.
/// </summary>
/// <param name="serviceProvider">The service provider.</param>
/// <param name="auditInfo">The audit information.</param>
public AuditLogContributionContext(IServiceProvider serviceProvider, AuditLogInfo auditInfo)
{
ServiceProvider = serviceProvider;
AuditInfo = auditInfo;
}
