Entity framework core 如何使用audit.NET EntityFramework.Core为每个更改的属性编写审核日志项
我正在尝试让Audit:NET EntityFramework.Core扩展为每个更改的属性编写一个AuditLog条目 为此,我使用自定义数据提供程序覆盖了Entity framework core 如何使用audit.NET EntityFramework.Core为每个更改的属性编写审核日志项,entity-framework-core,audit.net,Entity Framework Core,Audit.net,我正在尝试让Audit:NET EntityFramework.Core扩展为每个更改的属性编写一个AuditLog条目 为此,我使用自定义数据提供程序覆盖了EntityFrameworkDataProvider.InsertEvent 问题是,使用DbContextHelper.Core.CreateAuditEvent创建新的EntityFrameworkEvent返回null 原因似乎是,在代码执行的这一点上,DbContextHelper.GetModifiedEntries确定所有EF
EntityFrameworkDataProvider.InsertEvent
问题是,使用DbContextHelper.Core.CreateAuditEvent
创建新的EntityFrameworkEvent返回null
原因似乎是,在代码执行的这一点上,DbContextHelper.GetModifiedEntries
确定所有EF条目都具有状态。未修改的
,即使它们明确包含在EventEntry更改中
由于私有/内部属性的原因,我试图通过手动创建内容来规避CreateAuditEvent
也许有一个替代方案来解决这个问题,我没有看到,我愿意接受所有的建议
审计实体类别
public class AuditLog
{
public int Id { get; set; }
public string Description { get; set; }
public string OldValue { get; set; }
public string NewValue { get; set; }
public string PropertyName { get; set; }
public DateTime AuditDateTime { get; set; }
public Guid? AuditIssuerUserId { get; set; }
public string AuditAction { get; set; }
public string TableName { get; set; }
public int TablePK { get; set; }
}
public class CustomEntityFrameworkDataProvider : EntityFrameworkDataProvider
{
public override object InsertEvent(AuditEvent auditEvent)
{
var auditEventEf = auditEvent as AuditEventEntityFramework;
if (auditEventEf == null)
return null;
object result = null;
foreach (var entry in auditEventEf.EntityFrameworkEvent.Entries)
{
if (entry.Changes == null || entry.Changes.Count == 0)
continue;
foreach (var change in entry.Changes)
{
var contextHelper = new DbContextHelper();
var newEfEvent = contextHelper.CreateAuditEvent((IAuditDbContext)auditEventEf.EntityFrameworkEvent.GetDbContext());
if (newEfEvent == null)
continue;
newEfEvent.Entries = new List<EventEntry>() { entry };
entry.Changes = new List<EventEntryChange> { change };
auditEventEf.EntityFrameworkEvent = newEfEvent;
result = base.InsertEvent(auditEvent);
}
}
return result;
}
}
启动配置
Audit.Core.Configuration.Setup()
.UseCustomProvider(new CustomEntityFrameworkDataProvider(x => x
.AuditEntityAction<AuditLog>((ev, ent, auditEntity) =>
{
auditEntity.AuditDateTime = DateTime.Now;
auditEntity.AuditAction = ent.Action;
foreach(var change in ent.Changes)
{
auditEntity.OldValue = change.OriginalValue.ToString();
auditEntity.NewValue = change.NewValue.ToString();
auditEntity.PropertyName = change.ColumnName;
}
}
Audit.Core.Configuration.Setup()
.UseCustomProvider(新的CustomEntityFrameworkDataProvider(x=>x
.AuditEntityAction((ev、ent、auditEntity)=>
{
auditEntity.AuditDateTime=DateTime.Now;
auditEntity.AuditAction=ent.Action;
foreach(会计科目变动中的var变动)
{
auditEntity.OldValue=change.OriginalValue.ToString();
auditEntity.NewValue=change.NewValue.ToString();
auditEntity.PropertyName=change.ColumnName;
}
}
自定义数据提供程序类
public class AuditLog
{
public int Id { get; set; }
public string Description { get; set; }
public string OldValue { get; set; }
public string NewValue { get; set; }
public string PropertyName { get; set; }
public DateTime AuditDateTime { get; set; }
public Guid? AuditIssuerUserId { get; set; }
public string AuditAction { get; set; }
public string TableName { get; set; }
public int TablePK { get; set; }
}
public class CustomEntityFrameworkDataProvider : EntityFrameworkDataProvider
{
public override object InsertEvent(AuditEvent auditEvent)
{
var auditEventEf = auditEvent as AuditEventEntityFramework;
if (auditEventEf == null)
return null;
object result = null;
foreach (var entry in auditEventEf.EntityFrameworkEvent.Entries)
{
if (entry.Changes == null || entry.Changes.Count == 0)
continue;
foreach (var change in entry.Changes)
{
var contextHelper = new DbContextHelper();
var newEfEvent = contextHelper.CreateAuditEvent((IAuditDbContext)auditEventEf.EntityFrameworkEvent.GetDbContext());
if (newEfEvent == null)
continue;
newEfEvent.Entries = new List<EventEntry>() { entry };
entry.Changes = new List<EventEntryChange> { change };
auditEventEf.EntityFrameworkEvent = newEfEvent;
result = base.InsertEvent(auditEvent);
}
}
return result;
}
}
公共类CustomEntityFrameworkDataProvider:EntityFrameworkDataProvider
{
公共重写对象插入事件(AuditEvent AuditEvent)
{
var auditEventEf=auditEvent作为AuditEventEntityFramework;
如果(auditEventEf==null)
返回null;
对象结果=空;
foreach(auditEventEf.EntityFrameworkEvent.Entries中的var条目)
{
if(entry.Changes==null | | entry.Changes.Count==0)
继续;
foreach(分录中的var变更。变更)
{
var contextHelper=new DbContextHelper();
var newEfEvent=contextHelper.CreateAuditEvent((IAuditDbContext)auditEventEf.EntityFrameworkEvent.GetDbContext());
if(newEfEvent==null)
继续;
Entries=newlist(){entry};
entry.Changes=新列表{change};
auditEventEf.EntityFrameworkEvent=newEfEvent;
结果=base.InsertEvent(auditEvent);
}
}
返回结果;
}
}
在这里检查我的答案
您不需要调用CreateAuditEvent()
您应该能够迭代原始事件上的更改列表,并为每个更改调用base.InsertEvent()
,如下所示:
public override object InsertEvent(AuditEvent auditEvent)
{
var auditEventEf = auditEvent as AuditEventEntityFramework;
if (auditEventEf == null)
return null;
object result = null;
foreach (var entry in auditEventEf.EntityFrameworkEvent.Entries)
{
if (entry.Changes == null || entry.Changes.Count == 0)
continue;
// Call base.InsertEvent for each change
var originalChanges = entry.Changes;
foreach (var change in originalChanges)
{
entry.Changes = new List<EventEntryChange>() { change };
result = base.InsertEvent(auditEvent);
}
entry.Changes = originalChanges;
}
return result;
}
公共重写对象插入事件(AuditEvent AuditEvent)
{
var auditEventEf=auditEvent作为AuditEventEntityFramework;
如果(auditEventEf==null)
返回null;
对象结果=空;
foreach(auditEventEf.EntityFrameworkEvent.Entries中的var条目)
{
if(entry.Changes==null | | entry.Changes.Count==0)
继续;
//为每个更改调用base.InsertEvent
var originalChanges=条目。更改;
foreach(原始变化中的var变化)
{
entry.Changes=新列表(){change};
结果=base.InsertEvent(auditEvent);
}
条目变更=原始变更;
}
返回结果;
}
注:
- 这可能会影响性能,因为它会为每个列更改触发对数据库的插入
- 如果计划使用对DbContext.SaveChangesAsync的异步调用,还应在CustomDataProvider上实现InsertEventAsync方法
- Changes属性仅适用于更新,因此如果您还希望审核插入和删除,则需要添加逻辑以从事件的ColumnValues属性获取列值