666 lines
29 KiB
C#
666 lines
29 KiB
C#
using System;
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using System.Collections.Concurrent;
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using System.Collections.Generic;
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using System.Globalization;
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using System.Linq;
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using System.Net.Mail;
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using System.Text;
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using System.Threading;
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using System.Web;
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using Umbraco.Core.Configuration;
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using Umbraco.Core.IO;
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using Umbraco.Core.Logging;
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using Umbraco.Core.Models;
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using Umbraco.Core.Models.Entities;
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using Umbraco.Core.Models.Membership;
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using Umbraco.Core.Persistence.Repositories;
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using Umbraco.Core.Scoping;
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using Umbraco.Core.Strings;
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namespace Umbraco.Core.Services.Implement
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{
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public class NotificationService : INotificationService
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{
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private readonly IScopeProvider _uowProvider;
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private readonly IUserService _userService;
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private readonly IContentService _contentService;
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private readonly INotificationsRepository _notificationsRepository;
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private readonly IGlobalSettings _globalSettings;
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private readonly ILogger _logger;
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public NotificationService(IScopeProvider provider, IUserService userService, IContentService contentService, ILogger logger,
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INotificationsRepository notificationsRepository, IGlobalSettings globalSettings)
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{
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_notificationsRepository = notificationsRepository;
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_globalSettings = globalSettings;
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_uowProvider = provider ?? throw new ArgumentNullException(nameof(provider));
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_userService = userService ?? throw new ArgumentNullException(nameof(userService));
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_contentService = contentService ?? throw new ArgumentNullException(nameof(contentService));
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_logger = logger ?? throw new ArgumentNullException(nameof(logger));
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}
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/// <summary>
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/// Sends the notifications for the specified user regarding the specified node and action.
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/// </summary>
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/// <param name="entity"></param>
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/// <param name="operatingUser"></param>
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/// <param name="action"></param>
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/// <param name="actionName"></param>
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/// <param name="http"></param>
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/// <param name="createSubject"></param>
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/// <param name="createBody"></param>
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/// <remarks>
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/// Currently this will only work for Content entities!
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/// </remarks>
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public void SendNotifications(IUser operatingUser, IUmbracoEntity entity, string action, string actionName, HttpContextBase http,
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Func<IUser, string[], string> createSubject,
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Func<IUser, string[], string> createBody)
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{
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if (entity is IContent == false)
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throw new NotSupportedException();
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var content = (IContent) entity;
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// lazily get previous version
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IContentBase prevVersion = null;
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// do not load *all* users in memory at once
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// do not load notifications *per user* (N+1 select)
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// cannot load users & notifications in 1 query (combination btw User2AppDto and User2NodeNotifyDto)
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// => get batches of users, get all their notifications in 1 query
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// re. users:
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// users being (dis)approved = not an issue, filtered in memory not in SQL
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// users being modified or created = not an issue, ordering by ID, as long as we don't *insert* low IDs
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// users being deleted = not an issue for GetNextUsers
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var id = 0;
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var nodeIds = content.Path.Split(',').Select(int.Parse).ToArray();
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const int pagesz = 400; // load batches of 400 users
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do
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{
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// users are returned ordered by id, notifications are returned ordered by user id
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var users = ((UserService) _userService).GetNextUsers(id, pagesz).Where(x => x.IsApproved).ToList();
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var notifications = GetUsersNotifications(users.Select(x => x.Id), action, nodeIds, Constants.ObjectTypes.Document).ToList();
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if (notifications.Count == 0) break;
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var i = 0;
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foreach (var user in users)
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{
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// continue if there's no notification for this user
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if (notifications[i].UserId != user.Id) continue; // next user
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// lazy load prev version
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if (prevVersion == null)
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{
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prevVersion = GetPreviousVersion(entity.Id);
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}
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// queue notification
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var req = CreateNotificationRequest(operatingUser, user, content, prevVersion, actionName, http, createSubject, createBody);
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Enqueue(req);
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// skip other notifications for this user
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while (i < notifications.Count && notifications[i++].UserId == user.Id) ;
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if (i >= notifications.Count) break; // break if no more notifications
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}
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// load more users if any
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id = users.Count == pagesz ? users.Last().Id + 1 : -1;
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} while (id > 0);
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}
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/// <summary>
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/// Gets the previous version to the latest version of the content item if there is one
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/// </summary>
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/// <param name="contentId"></param>
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/// <returns></returns>
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private IContentBase GetPreviousVersion(int contentId)
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{
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// Regarding this: http://issues.umbraco.org/issue/U4-5180
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// we know they are descending from the service so we know that newest is first
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// we are only selecting the top 2 rows since that is all we need
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var allVersions = _contentService.GetVersionIds(contentId, 2).ToList();
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var prevVersionIndex = allVersions.Count > 1 ? 1 : 0;
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return _contentService.GetVersion(allVersions[prevVersionIndex]);
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}
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/// <summary>
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/// Sends the notifications for the specified user regarding the specified node and action.
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/// </summary>
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/// <param name="entities"></param>
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/// <param name="operatingUser"></param>
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/// <param name="action"></param>
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/// <param name="actionName"></param>
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/// <param name="http"></param>
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/// <param name="createSubject"></param>
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/// <param name="createBody"></param>
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/// <remarks>
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/// Currently this will only work for Content entities!
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/// </remarks>
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public void SendNotifications(IUser operatingUser, IEnumerable<IUmbracoEntity> entities, string action, string actionName, HttpContextBase http,
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Func<IUser, string[], string> createSubject,
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Func<IUser, string[], string> createBody)
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{
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if (entities is IEnumerable<IContent> == false)
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throw new NotSupportedException();
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var entitiesL = entities as List<IContent> ?? entities.Cast<IContent>().ToList();
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//exit if there are no entities
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if (entitiesL.Count == 0) return;
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//put all entity's paths into a list with the same indicies
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var paths = entitiesL.Select(x => x.Path.Split(',').Select(int.Parse).ToArray()).ToArray();
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// lazily get versions
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var prevVersionDictionary = new Dictionary<int, IContentBase>();
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// see notes above
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var id = 0;
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const int pagesz = 400; // load batches of 400 users
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do
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{
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// users are returned ordered by id, notifications are returned ordered by user id
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var users = ((UserService)_userService).GetNextUsers(id, pagesz).Where(x => x.IsApproved).ToList();
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var notifications = GetUsersNotifications(users.Select(x => x.Id), action, Enumerable.Empty<int>(), Constants.ObjectTypes.Document).ToList();
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if (notifications.Count == 0) break;
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var i = 0;
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foreach (var user in users)
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{
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// continue if there's no notification for this user
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if (notifications[i].UserId != user.Id) continue; // next user
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for (var j = 0; j < entitiesL.Count; j++)
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{
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var content = entitiesL[j];
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var path = paths[j];
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// test if the notification applies to the path ie to this entity
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if (path.Contains(notifications[i].EntityId) == false) continue; // next entity
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if (prevVersionDictionary.ContainsKey(content.Id) == false)
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{
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prevVersionDictionary[content.Id] = GetPreviousVersion(content.Id);
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}
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// queue notification
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var req = CreateNotificationRequest(operatingUser, user, content, prevVersionDictionary[content.Id], actionName, http, createSubject, createBody);
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Enqueue(req);
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}
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// skip other notifications for this user, essentially this means moving i to the next index of notifications
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// for the next user.
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do
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{
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i++;
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} while (i < notifications.Count && notifications[i].UserId == user.Id);
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if (i >= notifications.Count) break; // break if no more notifications
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}
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// load more users if any
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id = users.Count == pagesz ? users.Last().Id + 1 : -1;
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} while (id > 0);
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}
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private IEnumerable<Notification> GetUsersNotifications(IEnumerable<int> userIds, string action, IEnumerable<int> nodeIds, Guid objectType)
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{
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using (var scope = _uowProvider.CreateScope(autoComplete: true))
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{
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return _notificationsRepository.GetUsersNotifications(userIds, action, nodeIds, objectType);
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}
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}
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/// <summary>
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/// Gets the notifications for the user
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/// </summary>
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/// <param name="user"></param>
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/// <returns></returns>
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public IEnumerable<Notification> GetUserNotifications(IUser user)
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{
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using (var scope = _uowProvider.CreateScope(autoComplete: true))
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{
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return _notificationsRepository.GetUserNotifications(user);
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}
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}
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/// <summary>
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/// Gets the notifications for the user based on the specified node path
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/// </summary>
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/// <param name="user"></param>
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/// <param name="path"></param>
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/// <returns></returns>
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/// <remarks>
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/// Notifications are inherited from the parent so any child node will also have notifications assigned based on it's parent (ancestors)
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/// </remarks>
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public IEnumerable<Notification> GetUserNotifications(IUser user, string path)
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{
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var userNotifications = GetUserNotifications(user);
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return FilterUserNotificationsByPath(userNotifications, path);
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}
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/// <summary>
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/// Filters a userNotifications collection by a path
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/// </summary>
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/// <param name="userNotifications"></param>
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/// <param name="path"></param>
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/// <returns></returns>
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public IEnumerable<Notification> FilterUserNotificationsByPath(IEnumerable<Notification> userNotifications, string path)
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{
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var pathParts = path.Split(new[] {','}, StringSplitOptions.RemoveEmptyEntries);
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return userNotifications.Where(r => pathParts.InvariantContains(r.EntityId.ToString(CultureInfo.InvariantCulture))).ToList();
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}
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/// <summary>
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/// Deletes notifications by entity
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/// </summary>
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/// <param name="entity"></param>
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public IEnumerable<Notification> GetEntityNotifications(IEntity entity)
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{
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using (var scope = _uowProvider.CreateScope(autoComplete: true))
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{
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return _notificationsRepository.GetEntityNotifications(entity);
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}
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}
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/// <summary>
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/// Deletes notifications by entity
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/// </summary>
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/// <param name="entity"></param>
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public void DeleteNotifications(IEntity entity)
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{
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using (var scope = _uowProvider.CreateScope())
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{
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_notificationsRepository.DeleteNotifications(entity);
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scope.Complete();
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}
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}
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/// <summary>
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/// Deletes notifications by user
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/// </summary>
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/// <param name="user"></param>
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public void DeleteNotifications(IUser user)
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{
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using (var scope = _uowProvider.CreateScope())
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{
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_notificationsRepository.DeleteNotifications(user);
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scope.Complete();
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}
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}
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/// <summary>
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/// Delete notifications by user and entity
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/// </summary>
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/// <param name="user"></param>
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/// <param name="entity"></param>
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public void DeleteNotifications(IUser user, IEntity entity)
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{
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using (var scope = _uowProvider.CreateScope())
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{
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_notificationsRepository.DeleteNotifications(user, entity);
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scope.Complete();
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}
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}
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/// <summary>
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/// Sets the specific notifications for the user and entity
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/// </summary>
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/// <param name="user"></param>
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/// <param name="entity"></param>
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/// <param name="actions"></param>
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/// <remarks>
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/// This performs a full replace
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/// </remarks>
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public IEnumerable<Notification> SetNotifications(IUser user, IEntity entity, string[] actions)
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{
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using (var scope = _uowProvider.CreateScope())
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{
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var notifications = _notificationsRepository.SetNotifications(user, entity, actions);
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scope.Complete();
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return notifications;
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}
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}
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/// <summary>
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/// Creates a new notification
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/// </summary>
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/// <param name="user"></param>
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/// <param name="entity"></param>
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/// <param name="action">The action letter - note: this is a string for future compatibility</param>
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/// <returns></returns>
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public Notification CreateNotification(IUser user, IEntity entity, string action)
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{
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using (var scope = _uowProvider.CreateScope())
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{
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var notification = _notificationsRepository.CreateNotification(user, entity, action);
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scope.Complete();
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return notification;
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}
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}
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#region private methods
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/// <summary>
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/// Sends the notification
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/// </summary>
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/// <param name="performingUser"></param>
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/// <param name="mailingUser"></param>
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/// <param name="content"></param>
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/// <param name="oldDoc"></param>
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/// <param name="actionName">The action readable name - currently an action is just a single letter, this is the name associated with the letter </param>
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/// <param name="http"></param>
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/// <param name="createSubject">Callback to create the mail subject</param>
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/// <param name="createBody">Callback to create the mail body</param>
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private NotificationRequest CreateNotificationRequest(IUser performingUser, IUser mailingUser, IContentBase content, IContentBase oldDoc,
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string actionName, HttpContextBase http,
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Func<IUser, string[], string> createSubject,
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Func<IUser, string[], string> createBody)
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{
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if (performingUser == null) throw new ArgumentNullException("performingUser");
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if (mailingUser == null) throw new ArgumentNullException("mailingUser");
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if (content == null) throw new ArgumentNullException("content");
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if (http == null) throw new ArgumentNullException("http");
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if (createSubject == null) throw new ArgumentNullException("createSubject");
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if (createBody == null) throw new ArgumentNullException("createBody");
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// build summary
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var summary = new StringBuilder();
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var props = content.Properties.ToArray();
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foreach (var p in props)
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{
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var newText = p.GetValue() != null ? p.GetValue().ToString() : "";
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var oldText = newText;
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// check if something was changed and display the changes otherwise display the fields
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if (oldDoc.Properties.Contains(p.PropertyType.Alias))
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{
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var oldProperty = oldDoc.Properties[p.PropertyType.Alias];
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oldText = oldProperty.GetValue() != null ? oldProperty.GetValue().ToString() : "";
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// replace html with char equivalent
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ReplaceHtmlSymbols(ref oldText);
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ReplaceHtmlSymbols(ref newText);
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}
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// make sure to only highlight changes done using TinyMCE editor... other changes will be displayed using default summary
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// TODO: We should probably allow more than just tinymce??
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if ((p.PropertyType.PropertyEditorAlias == Constants.PropertyEditors.Aliases.TinyMce)
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&& string.CompareOrdinal(oldText, newText) != 0)
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{
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summary.Append("<tr>");
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summary.Append("<th style='text-align: left; vertical-align: top; width: 25%;'> Note: </th>");
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summary.Append(
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"<td style='text-align: left; vertical-align: top;'> <span style='background-color:red;'>Red for deleted characters</span> <span style='background-color:yellow;'>Yellow for inserted characters</span></td>");
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summary.Append("</tr>");
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summary.Append("<tr>");
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summary.Append("<th style='text-align: left; vertical-align: top; width: 25%;'> New ");
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summary.Append(p.PropertyType.Name);
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summary.Append("</th>");
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summary.Append("<td style='text-align: left; vertical-align: top;'>");
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summary.Append(ReplaceLinks(CompareText(oldText, newText, true, false, "<span style='background-color:yellow;'>", string.Empty), http.Request));
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summary.Append("</td>");
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summary.Append("</tr>");
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summary.Append("<tr>");
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summary.Append("<th style='text-align: left; vertical-align: top; width: 25%;'> Old ");
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summary.Append(p.PropertyType.Name);
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summary.Append("</th>");
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summary.Append("<td style='text-align: left; vertical-align: top;'>");
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summary.Append(ReplaceLinks(CompareText(newText, oldText, true, false, "<span style='background-color:red;'>", string.Empty), http.Request));
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summary.Append("</td>");
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summary.Append("</tr>");
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}
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else
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{
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summary.Append("<tr>");
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summary.Append("<th style='text-align: left; vertical-align: top; width: 25%;'>");
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summary.Append(p.PropertyType.Name);
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summary.Append("</th>");
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summary.Append("<td style='text-align: left; vertical-align: top;'>");
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summary.Append(newText);
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summary.Append("</td>");
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summary.Append("</tr>");
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}
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summary.Append(
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"<tr><td colspan=\"2\" style=\"border-bottom: 1px solid #CCC; font-size: 2px;\"> </td></tr>");
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}
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string protocol = _globalSettings.UseHttps ? "https" : "http";
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string[] subjectVars = {
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string.Concat(http.Request.ServerVariables["SERVER_NAME"], ":", http.Request.Url.Port, IOHelper.ResolveUrl(SystemDirectories.Umbraco)),
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actionName,
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content.Name
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};
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string[] bodyVars = {
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mailingUser.Name,
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actionName,
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content.Name,
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performingUser.Name,
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string.Concat(http.Request.ServerVariables["SERVER_NAME"], ":", http.Request.Url.Port, IOHelper.ResolveUrl(SystemDirectories.Umbraco)),
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content.Id.ToString(CultureInfo.InvariantCulture), summary.ToString(),
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string.Format("{2}://{0}/{1}",
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string.Concat(http.Request.ServerVariables["SERVER_NAME"], ":", http.Request.Url.Port),
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//TODO: RE-enable this so we can have a nice url
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/*umbraco.library.NiceUrl(documentObject.Id))*/
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string.Concat(content.Id, ".aspx"),
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protocol)
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};
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// create the mail message
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var mail = new MailMessage(UmbracoConfig.For.UmbracoSettings().Content.NotificationEmailAddress, mailingUser.Email);
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// populate the message
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mail.Subject = createSubject(mailingUser, subjectVars);
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if (UmbracoConfig.For.UmbracoSettings().Content.DisableHtmlEmail)
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{
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mail.IsBodyHtml = false;
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mail.Body = createBody(mailingUser, bodyVars);
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}
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else
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{
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mail.IsBodyHtml = true;
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mail.Body =
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string.Concat(@"<html><head>
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</head>
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<body style='font-family: Trebuchet MS, arial, sans-serif; font-color: black;'>
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", createBody(mailingUser, bodyVars));
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}
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// nh, issue 30724. Due to hardcoded http strings in resource files, we need to check for https replacements here
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// adding the server name to make sure we don't replace external links
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if (_globalSettings.UseHttps && string.IsNullOrEmpty(mail.Body) == false)
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{
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string serverName = http.Request.ServerVariables["SERVER_NAME"];
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mail.Body = mail.Body.Replace(
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string.Format("http://{0}", serverName),
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string.Format("https://{0}", serverName));
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}
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return new NotificationRequest(mail, actionName, mailingUser.Name, mailingUser.Email);
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}
|
|
|
|
private string ReplaceLinks(string text, HttpRequestBase request)
|
|
{
|
|
var sb = new StringBuilder(_globalSettings.UseHttps ? "https://" : "http://");
|
|
sb.Append(request.ServerVariables["SERVER_NAME"]);
|
|
sb.Append(":");
|
|
sb.Append(request.Url.Port);
|
|
sb.Append("/");
|
|
var domain = sb.ToString();
|
|
text = text.Replace("href=\"/", "href=\"" + domain);
|
|
text = text.Replace("src=\"/", "src=\"" + domain);
|
|
return text;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Replaces the HTML symbols with the character equivalent.
|
|
/// </summary>
|
|
/// <param name="oldString">The old string.</param>
|
|
private static void ReplaceHtmlSymbols(ref string oldString)
|
|
{
|
|
oldString = oldString.Replace(" ", " ");
|
|
oldString = oldString.Replace("’", "'");
|
|
oldString = oldString.Replace("&", "&");
|
|
oldString = oldString.Replace("“", "“");
|
|
oldString = oldString.Replace("”", "”");
|
|
oldString = oldString.Replace(""", "\"");
|
|
}
|
|
|
|
/// <summary>
|
|
/// Compares the text.
|
|
/// </summary>
|
|
/// <param name="oldText">The old text.</param>
|
|
/// <param name="newText">The new text.</param>
|
|
/// <param name="displayInsertedText">if set to <c>true</c> [display inserted text].</param>
|
|
/// <param name="displayDeletedText">if set to <c>true</c> [display deleted text].</param>
|
|
/// <param name="insertedStyle">The inserted style.</param>
|
|
/// <param name="deletedStyle">The deleted style.</param>
|
|
/// <returns></returns>
|
|
private static string CompareText(string oldText, string newText, bool displayInsertedText,
|
|
bool displayDeletedText, string insertedStyle, string deletedStyle)
|
|
{
|
|
var sb = new StringBuilder();
|
|
var diffs = Diff.DiffText1(oldText, newText);
|
|
|
|
int pos = 0;
|
|
for (var n = 0; n < diffs.Length; n++)
|
|
{
|
|
var it = diffs[n];
|
|
|
|
// write unchanged chars
|
|
while ((pos < it.StartB) && (pos < newText.Length))
|
|
{
|
|
sb.Append(newText[pos]);
|
|
pos++;
|
|
} // while
|
|
|
|
// write deleted chars
|
|
if (displayDeletedText && it.DeletedA > 0)
|
|
{
|
|
sb.Append(deletedStyle);
|
|
for (var m = 0; m < it.DeletedA; m++)
|
|
{
|
|
sb.Append(oldText[it.StartA + m]);
|
|
} // for
|
|
sb.Append("</span>");
|
|
}
|
|
|
|
// write inserted chars
|
|
if (displayInsertedText && pos < it.StartB + it.InsertedB)
|
|
{
|
|
sb.Append(insertedStyle);
|
|
while (pos < it.StartB + it.InsertedB)
|
|
{
|
|
sb.Append(newText[pos]);
|
|
pos++;
|
|
} // while
|
|
sb.Append("</span>");
|
|
} // if
|
|
} // while
|
|
|
|
// write rest of unchanged chars
|
|
while (pos < newText.Length)
|
|
{
|
|
sb.Append(newText[pos]);
|
|
pos++;
|
|
} // while
|
|
|
|
return sb.ToString();
|
|
}
|
|
|
|
// manage notifications
|
|
// ideally, would need to use IBackgroundTasks - but they are not part of Core!
|
|
|
|
private static readonly object Locker = new object();
|
|
private static readonly BlockingCollection<NotificationRequest> Queue = new BlockingCollection<NotificationRequest>();
|
|
private static volatile bool _running;
|
|
|
|
private void Enqueue(NotificationRequest notification)
|
|
{
|
|
Queue.Add(notification);
|
|
if (_running) return;
|
|
lock (Locker)
|
|
{
|
|
if (_running) return;
|
|
Process(Queue);
|
|
_running = true;
|
|
}
|
|
}
|
|
|
|
private class NotificationRequest
|
|
{
|
|
public NotificationRequest(MailMessage mail, string action, string userName, string email)
|
|
{
|
|
Mail = mail;
|
|
Action = action;
|
|
UserName = userName;
|
|
Email = email;
|
|
}
|
|
|
|
public MailMessage Mail { get; private set; }
|
|
|
|
public string Action { get; private set; }
|
|
|
|
public string UserName { get; private set; }
|
|
|
|
public string Email { get; private set; }
|
|
}
|
|
|
|
private void Process(BlockingCollection<NotificationRequest> notificationRequests)
|
|
{
|
|
ThreadPool.QueueUserWorkItem(state =>
|
|
{
|
|
var s = new SmtpClient();
|
|
try
|
|
{
|
|
_logger.Debug<NotificationService>("Begin processing notifications.");
|
|
while (true)
|
|
{
|
|
NotificationRequest request;
|
|
while (notificationRequests.TryTake(out request, 8 * 1000)) // stay on for 8s
|
|
{
|
|
try
|
|
{
|
|
if (Sendmail != null) Sendmail(s, request.Mail, _logger); else s.Send(request.Mail);
|
|
_logger.Debug<NotificationService>(string.Format("Notification \"{0}\" sent to {1} ({2})", request.Action, request.UserName, request.Email));
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
_logger.Error<NotificationService>("An error occurred sending notification", ex);
|
|
s.Dispose();
|
|
s = new SmtpClient();
|
|
}
|
|
finally
|
|
{
|
|
request.Mail.Dispose();
|
|
}
|
|
}
|
|
lock (Locker)
|
|
{
|
|
if (notificationRequests.Count > 0) continue; // last chance
|
|
_running = false; // going down
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
finally
|
|
{
|
|
s.Dispose();
|
|
}
|
|
_logger.Debug<NotificationService>("Done processing notifications.");
|
|
});
|
|
}
|
|
|
|
// for tests
|
|
internal static Action<SmtpClient, MailMessage, ILogger> Sendmail;
|
|
//= (_, msg, logger) => logger.Debug<NotificationService>("Email " + msg.To.ToString());
|
|
|
|
#endregion
|
|
}
|
|
}
|