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AuditEntryRepository.cs
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AuditEntryRepository.cs
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using Penguin.Auditing.Abstractions.Attributes;
using Penguin.Cms.Entities;
using Penguin.Cms.Repositories;
using Penguin.Messaging.Abstractions.Interfaces;
using Penguin.Messaging.Core;
using Penguin.Messaging.Persistence.Interfaces;
using Penguin.Persistence.Abstractions;
using Penguin.Persistence.Abstractions.Interfaces;
using Penguin.Security.Abstractions.Interfaces;
using System;
using System.Collections.Generic;
using System.Diagnostics.Contracts;
using System.Reflection;
namespace Penguin.Cms.Auditing.Repositories
{
/// <summary>
/// A repository with a message handler that accepts persistence context changes so it can log them
/// </summary>
public class AuditEntryRepository : EntityRepository<AuditEntry>, IMessageHandler<IUpdating<KeyedObject>>
{
private IUserSession UserSession { get; set; }
private Guid ContextId = Guid.NewGuid();
/// <summary>
/// Constructs a new instance of this repository
/// </summary>
/// <param name="dbContext"></param>
/// <param name="userSession"></param>
/// <param name="messageBus"></param>
public AuditEntryRepository(IPersistenceContext<AuditEntry> dbContext, IUserSession userSession, MessageBus messageBus = null) : base(dbContext, messageBus)
{
UserSession = userSession;
}
/// <summary>
/// Accepts an object update message pre-commit so that it can add the change to the underlying context
/// </summary>
/// <param name="message">The object update message</param>
public void AcceptMessage(IUpdating<KeyedObject> message)
{
Contract.Requires(message != null);
if (message.Target.GetType().GetCustomAttribute<DontAuditChangesAttribute>() != null)
{
return;
}
foreach (KeyValuePair<string, object> newValue in message.NewValues)
{
AuditEntry thisEntry = new()
{
ContextId = ContextId,
NewValue = newValue.Value?.ToString(),
PropertyName = newValue.Key,
Target = (message.Target as Entity)?.Guid ?? Guid.Empty,
Target_Id = message.Target._Id,
TypeName = message.Target.GetType().Name,
TypeNamespace = message.Target.GetType().Namespace,
Source = UserSession?.LoggedInUser?.Guid ?? Guid.Empty
};
Context.Add(thisEntry);
}
}
}
}