696 lines
23 KiB
C#
696 lines
23 KiB
C#
namespace ASC.ElasticSearch;
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public enum UpdateAction
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{
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Add,
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Replace,
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Remove
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}
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[Singletone]
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public class BaseIndexerHelper
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{
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public ConcurrentDictionary<string, bool> IsExist { get; set; }
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private readonly ICacheNotify<ClearIndexAction> _notify;
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public BaseIndexerHelper(ICacheNotify<ClearIndexAction> cacheNotify)
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{
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IsExist = new ConcurrentDictionary<string, bool>();
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_notify = cacheNotify;
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_notify.Subscribe((a) =>
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{
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IsExist.AddOrUpdate(a.Id, false, (string q, bool w) => false);
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}, CacheNotifyAction.Any);
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}
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public void Clear<T>(T t) where T : class, ISearchItem
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{
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_notify.Publish(new ClearIndexAction() { Id = t.IndexName }, CacheNotifyAction.Any);
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}
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}
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[Scope]
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public class BaseIndexer<T> where T : class, ISearchItem
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{
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public const int QueryLimit = 10000;
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protected internal T Wrapper => _serviceProvider.GetService<T>();
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internal string IndexName => Wrapper.IndexName;
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private WebstudioDbContext WebstudioDbContext => _lazyWebstudioDbContext.Value;
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private bool _isExist;
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private readonly Client _client;
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private readonly ILog _logger;
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private readonly TenantManager _tenantManager;
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private readonly BaseIndexerHelper _baseIndexerHelper;
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private readonly Settings _settings;
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private readonly IServiceProvider _serviceProvider;
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private readonly Lazy<WebstudioDbContext> _lazyWebstudioDbContext;
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private static readonly object _locker = new object();
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public BaseIndexer(
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Client client,
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IOptionsMonitor<ILog> log,
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DbContextManager<WebstudioDbContext> dbContextManager,
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TenantManager tenantManager,
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BaseIndexerHelper baseIndexerHelper,
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Settings settings,
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IServiceProvider serviceProvider)
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{
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_client = client;
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_logger = log.CurrentValue;
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_tenantManager = tenantManager;
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_baseIndexerHelper = baseIndexerHelper;
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_settings = settings;
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_serviceProvider = serviceProvider;
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_lazyWebstudioDbContext = new Lazy<WebstudioDbContext>(() => dbContextManager.Value);
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}
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public IEnumerable<List<T>> IndexAll(
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Func<DateTime, (int, int, int)> getCount,
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Func<DateTime, List<int>> getIds,
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Func<long, long, DateTime, List<T>> getData)
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{
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var now = DateTime.UtcNow;
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var lastIndexed = WebstudioDbContext.WebstudioIndex
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.Where(r => r.IndexName == Wrapper.IndexName)
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.Select(r => r.LastModified)
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.FirstOrDefault();
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if (lastIndexed.Equals(DateTime.MinValue))
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{
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CreateIfNotExist(_serviceProvider.GetService<T>());
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}
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var (count, max, min) = getCount(lastIndexed);
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_logger.Debug($"Index: {IndexName}, Count {count}, Max: {max}, Min: {min}");
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var ids = new List<int>() { min };
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ids.AddRange(getIds(lastIndexed));
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ids.Add(max);
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for (var i = 0; i < ids.Count - 1; i++)
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{
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yield return getData(ids[i], ids[i + 1], lastIndexed);
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}
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WebstudioDbContext.AddOrUpdate(r => r.WebstudioIndex, new DbWebstudioIndex()
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{
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IndexName = Wrapper.IndexName,
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LastModified = now
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});
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WebstudioDbContext.SaveChanges();
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_logger.Debug($"index completed {Wrapper.IndexName}");
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}
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public Task ReIndex()
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{
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Clear();
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return Task.CompletedTask;
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//((IIndexer) this).IndexAll();
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}
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public void CreateIfNotExist(T data)
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{
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try
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{
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if (CheckExist(data))
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{
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return;
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}
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lock (_locker)
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{
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IPromise<IAnalyzers> analyzers(AnalyzersDescriptor b)
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{
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foreach (var c in Enum.GetNames(typeof(Analyzer)))
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{
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var c1 = c;
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b.Custom(c1 + "custom", ca => ca.Tokenizer(c1).Filters(nameof(Filter.lowercase)).CharFilters(nameof(CharFilter.io)));
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}
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foreach (var c in Enum.GetNames(typeof(CharFilter)))
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{
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if (c == nameof(CharFilter.io))
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{
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continue;
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}
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var charFilters = new List<string>() { nameof(CharFilter.io), c };
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var c1 = c;
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b.Custom(c1 + "custom", ca => ca.Tokenizer(nameof(Analyzer.whitespace)).Filters(nameof(Filter.lowercase)).CharFilters(charFilters));
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}
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if (data is ISearchItemDocument)
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{
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b.Custom("document", ca => ca.Tokenizer(Analyzer.whitespace.ToString()).Filters(nameof(Filter.lowercase)).CharFilters(nameof(CharFilter.io)));
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}
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return b;
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}
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_client.Instance.Indices.Create(data.IndexName,
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c =>
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c.Map<T>(m => m.AutoMap())
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.Settings(r => r.Analysis(a =>
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a.Analyzers(analyzers)
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.CharFilters(d => d.HtmlStrip(CharFilter.html.ToString())
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.Mapping(CharFilter.io.ToString(), m => m.Mappings("ё => е", "Ё => Е"))))));
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_isExist = true;
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}
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}
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catch (Exception e)
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{
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_logger.Error("CreateIfNotExist", e);
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}
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}
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public void Flush()
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{
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_client.Instance.Indices.Flush(new FlushRequest(IndexName));
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}
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public void Refresh()
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{
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_client.Instance.Indices.Refresh(new RefreshRequest(IndexName));
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}
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internal void Index(T data, bool immediately = true)
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{
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CreateIfNotExist(data);
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_client.Instance.Index(data, idx => GetMeta(idx, data, immediately));
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}
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internal void Index(List<T> data, bool immediately = true)
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{
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if (data.Count == 0)
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{
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return;
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}
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CreateIfNotExist(data[0]);
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if (data[0] is ISearchItemDocument)
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{
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var currentLength = 0L;
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var portion = new List<T>();
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var portionStart = 0;
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for (var i = 0; i < data.Count; i++)
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{
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var t = data[i];
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var runBulk = i == data.Count - 1;
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if (!(t is ISearchItemDocument wwd) || wwd.Document == null || string.IsNullOrEmpty(wwd.Document.Data))
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{
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portion.Add(t);
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}
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else
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{
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var dLength = wwd.Document.Data.Length;
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if (dLength >= _settings.MaxContentLength)
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{
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try
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{
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Index(t, immediately);
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}
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catch (ElasticsearchClientException e)
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{
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if (e.Response.HttpStatusCode == 429)
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{
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throw;
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}
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_logger.Error(e);
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}
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catch (Exception e)
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{
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_logger.Error(e);
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}
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finally
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{
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wwd.Document.Data = null;
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wwd.Document = null;
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wwd = null;
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GC.Collect();
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}
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continue;
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}
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if (currentLength + dLength < _settings.MaxContentLength)
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{
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portion.Add(t);
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currentLength += dLength;
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}
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else
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{
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runBulk = true;
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i--;
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}
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}
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if (runBulk)
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{
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var portion1 = portion.ToList();
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_client.Instance.Bulk(r => r.IndexMany(portion1, GetMeta).SourceExcludes("attachments"));
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for (var j = portionStart; j < i; j++)
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{
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if (data[j] is ISearchItemDocument doc && doc.Document != null)
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{
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doc.Document.Data = null;
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doc.Document = null;
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}
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doc = null;
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}
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portionStart = i;
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portion = new List<T>();
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currentLength = 0L;
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GC.Collect();
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}
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}
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}
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else
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{
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_client.Instance.Bulk(r => r.IndexMany(data, GetMeta));
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}
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}
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internal async Task IndexAsync(List<T> data, bool immediately = true)
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{
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CreateIfNotExist(data[0]);
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if (data is ISearchItemDocument)
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{
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var currentLength = 0L;
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var portion = new List<T>();
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var portionStart = 0;
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for (var i = 0; i < data.Count; i++)
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{
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var t = data[i];
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var runBulk = i == data.Count - 1;
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var wwd = t as ISearchItemDocument;
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if (wwd == null || wwd.Document == null || string.IsNullOrEmpty(wwd.Document.Data))
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{
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portion.Add(t);
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}
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else
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{
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var dLength = wwd.Document.Data.Length;
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if (dLength >= _settings.MaxContentLength)
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{
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try
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{
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Index(t, immediately);
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}
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catch (ElasticsearchClientException e)
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{
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if (e.Response.HttpStatusCode == 429)
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{
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throw;
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}
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_logger.Error(e);
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}
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catch (Exception e)
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{
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_logger.Error(e);
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}
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finally
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{
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wwd.Document.Data = null;
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wwd.Document = null;
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GC.Collect();
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}
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continue;
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}
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if (currentLength + dLength < _settings.MaxContentLength)
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{
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portion.Add(t);
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currentLength += dLength;
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}
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else
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{
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runBulk = true;
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i--;
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}
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}
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if (runBulk)
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{
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var portion1 = portion.ToList();
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await _client.Instance.BulkAsync(r => r.IndexMany(portion1, GetMeta).SourceExcludes("attachments"));
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for (var j = portionStart; j < i; j++)
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{
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var doc = data[j] as ISearchItemDocument;
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if (doc != null && doc.Document != null)
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{
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doc.Document.Data = null;
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doc.Document = null;
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}
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}
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portionStart = i;
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portion = new List<T>();
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currentLength = 0L;
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GC.Collect();
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}
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}
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}
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else
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{
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await _client.Instance.BulkAsync(r => r.IndexMany(data, GetMeta));
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}
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}
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internal void Update(T data, bool immediately = true, params Expression<Func<T, object>>[] fields)
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{
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CreateIfNotExist(data);
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_client.Instance.Update(DocumentPath<T>.Id(data), r => GetMetaForUpdate(r, data, immediately, fields));
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}
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internal void Update(T data, UpdateAction action, Expression<Func<T, IList>> fields, bool immediately = true)
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{
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CreateIfNotExist(data);
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_client.Instance.Update(DocumentPath<T>.Id(data), r => GetMetaForUpdate(r, data, action, fields, immediately));
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}
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internal void Update(T data, Expression<Func<Selector<T>, Selector<T>>> expression, int tenantId, bool immediately = true, params Expression<Func<T, object>>[] fields)
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{
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CreateIfNotExist(data);
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_client.Instance.UpdateByQuery(GetDescriptorForUpdate(data, expression, tenantId, immediately, fields));
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}
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internal void Update(T data, Expression<Func<Selector<T>, Selector<T>>> expression, int tenantId, UpdateAction action, Expression<Func<T, IList>> fields, bool immediately = true)
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{
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CreateIfNotExist(data);
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_client.Instance.UpdateByQuery(GetDescriptorForUpdate(data, expression, tenantId, action, fields, immediately));
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}
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internal void Delete(T data, bool immediately = true)
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{
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_client.Instance.Delete<T>(data, r => GetMetaForDelete(r, immediately));
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}
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internal void Delete(Expression<Func<Selector<T>, Selector<T>>> expression, int tenantId, bool immediately = true)
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{
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_client.Instance.DeleteByQuery(GetDescriptorForDelete(expression, tenantId, immediately));
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}
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internal bool CheckExist(T data)
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{
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try
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{
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var isExist = _baseIndexerHelper.IsExist.GetOrAdd(data.IndexName, (k) => _client.Instance.Indices.Exists(k).Exists);
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if (isExist)
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{
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return true;
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}
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lock (_locker)
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{
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isExist = _client.Instance.Indices.Exists(data.IndexName).Exists;
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_baseIndexerHelper.IsExist.TryUpdate(data.IndexName, _isExist, false);
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if (isExist)
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{
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return true;
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}
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}
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}
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catch (Exception e)
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{
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_logger.Error("CheckExist " + data.IndexName, e);
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}
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return false;
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}
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internal IReadOnlyCollection<T> Select(Expression<Func<Selector<T>, Selector<T>>> expression, bool onlyId = false)
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{
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var func = expression.Compile();
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var selector = new Selector<T>(_serviceProvider);
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var descriptor = func(selector).Where(r => r.TenantId, _tenantManager.GetCurrentTenant().Id);
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return _client.Instance.Search(descriptor.GetDescriptor(this, onlyId)).Documents;
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}
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internal IReadOnlyCollection<T> Select(Expression<Func<Selector<T>, Selector<T>>> expression, bool onlyId, out long total)
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{
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var func = expression.Compile();
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var selector = new Selector<T>(_serviceProvider);
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var descriptor = func(selector).Where(r => r.TenantId, _tenantManager.GetCurrentTenant().Id);
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var result = _client.Instance.Search(descriptor.GetDescriptor(this, onlyId));
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total = result.Total;
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return result.Documents;
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}
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private void Clear()
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{
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var index = WebstudioDbContext.WebstudioIndex.Where(r => r.IndexName == Wrapper.IndexName).FirstOrDefault();
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if (index != null)
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{
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WebstudioDbContext.WebstudioIndex.Remove(index);
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}
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WebstudioDbContext.SaveChanges();
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_logger.DebugFormat("Delete {0}", Wrapper.IndexName);
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_client.Instance.Indices.Delete(Wrapper.IndexName);
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_baseIndexerHelper.Clear(Wrapper);
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CreateIfNotExist(Wrapper);
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}
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private IIndexRequest<T> GetMeta(IndexDescriptor<T> request, T data, bool immediately = true)
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{
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var result = request.Index(data.IndexName).Id(data.Id);
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if (immediately)
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{
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result.Refresh(Elasticsearch.Net.Refresh.True);
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}
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if (data is ISearchItemDocument)
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{
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result.Pipeline("attachments");
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}
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return result;
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}
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private IBulkIndexOperation<T> GetMeta(BulkIndexDescriptor<T> desc, T data)
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{
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var result = desc.Index(IndexName).Id(data.Id);
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if (data is ISearchItemDocument)
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{
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result.Pipeline("attachments");
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}
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return result;
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}
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private IUpdateRequest<T, T> GetMetaForUpdate(UpdateDescriptor<T, T> request, T data, bool immediately = true, params Expression<Func<T, object>>[] fields)
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{
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var result = request.Index(IndexName);
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if (fields.Length > 0)
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{
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result.Script(GetScriptUpdateByQuery(data, fields));
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}
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else
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{
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result.Doc(data);
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}
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if (immediately)
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{
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result.Refresh(Elasticsearch.Net.Refresh.True);
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}
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return result;
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}
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private Func<ScriptDescriptor, IScript> GetScriptUpdateByQuery(T data, params Expression<Func<T, object>>[] fields)
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{
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var source = new StringBuilder();
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var parameters = new Dictionary<string, object>();
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for (var i = 0; i < fields.Length; i++)
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{
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var field = fields[i];
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var func = field.Compile();
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var newValue = func(data);
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string name;
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var expression = field.Body;
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var isList = expression.Type.IsGenericType && expression.Type.GetGenericTypeDefinition() == typeof(List<>);
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var sourceExprText = "";
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while (!string.IsNullOrEmpty(name = TryGetName(expression, out var member)))
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{
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sourceExprText = "." + name + sourceExprText;
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}
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if (isList)
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{
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UpdateByAction(UpdateAction.Add, (IList)newValue, sourceExprText, parameters, source);
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}
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else
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{
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if (newValue == default(T))
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{
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source.Append($"ctx._source.remove('{sourceExprText.Substring(1)}');");
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}
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else
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{
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var pkey = "p" + sourceExprText.Replace(".", "");
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source.Append($"ctx._source{sourceExprText} = params.{pkey};");
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parameters.Add(pkey, newValue);
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}
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}
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}
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var sourceData = source.ToString();
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return r => r.Source(sourceData).Params(parameters);
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}
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private IUpdateRequest<T, T> GetMetaForUpdate(UpdateDescriptor<T, T> request, T data, UpdateAction action, Expression<Func<T, IList>> fields, bool immediately = true)
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{
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var result = request.Index(IndexName).Script(GetScriptForUpdate(data, action, fields));
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|
||
if (immediately)
|
||
{
|
||
result.Refresh(Elasticsearch.Net.Refresh.True);
|
||
}
|
||
|
||
return result;
|
||
}
|
||
|
||
private Func<ScriptDescriptor, IScript> GetScriptForUpdate(T data, UpdateAction action, Expression<Func<T, IList>> fields)
|
||
{
|
||
var source = new StringBuilder();
|
||
|
||
var func = fields.Compile();
|
||
var newValue = func(data);
|
||
string name;
|
||
|
||
var expression = fields.Body;
|
||
|
||
var sourceExprText = "";
|
||
|
||
while (!string.IsNullOrEmpty(name = TryGetName(expression, out var member)))
|
||
{
|
||
sourceExprText = "." + name + sourceExprText;
|
||
expression = member.Expression;
|
||
}
|
||
|
||
var parameters = new Dictionary<string, object>();
|
||
|
||
UpdateByAction(action, newValue, sourceExprText, parameters, source);
|
||
|
||
return r => r.Source(source.ToString()).Params(parameters);
|
||
}
|
||
|
||
private void UpdateByAction(UpdateAction action, IList newValue, string key, Dictionary<string, object> parameters, StringBuilder source)
|
||
{
|
||
var paramKey = "p" + key.Replace(".", "");
|
||
switch (action)
|
||
{
|
||
case UpdateAction.Add:
|
||
for (var i = 0; i < newValue.Count; i++)
|
||
{
|
||
parameters.Add(paramKey + i, newValue[i]);
|
||
source.Append($"if (!ctx._source{key}.contains(params.{paramKey + i})){{ctx._source{key}.add(params.{paramKey + i})}}");
|
||
}
|
||
break;
|
||
case UpdateAction.Replace:
|
||
parameters.Add(paramKey, newValue);
|
||
source.Append($"ctx._source{key} = params.{paramKey};");
|
||
break;
|
||
case UpdateAction.Remove:
|
||
for (var i = 0; i < newValue.Count; i++)
|
||
{
|
||
parameters.Add(paramKey + i, newValue[i]);
|
||
source.Append($"ctx._source{key}.removeIf(item -> item.id == params.{paramKey + i}.id)");
|
||
}
|
||
break;
|
||
default:
|
||
throw new ArgumentOutOfRangeException("action", action, null);
|
||
}
|
||
}
|
||
|
||
private string TryGetName(Expression expr, out MemberExpression member)
|
||
{
|
||
member = expr as MemberExpression;
|
||
if (member == null)
|
||
{
|
||
if (expr is UnaryExpression unary)
|
||
{
|
||
member = unary.Operand as MemberExpression;
|
||
}
|
||
}
|
||
|
||
return member == null ? "" : member.Member.Name.ToLowerCamelCase();
|
||
}
|
||
|
||
private IDeleteRequest GetMetaForDelete(DeleteDescriptor<T> request, bool immediately = true)
|
||
{
|
||
var result = request.Index(IndexName);
|
||
if (immediately)
|
||
{
|
||
result.Refresh(Elasticsearch.Net.Refresh.True);
|
||
}
|
||
|
||
return result;
|
||
}
|
||
|
||
private Func<DeleteByQueryDescriptor<T>, IDeleteByQueryRequest> GetDescriptorForDelete(Expression<Func<Selector<T>, Selector<T>>> expression, int tenantId, bool immediately = true)
|
||
{
|
||
var func = expression.Compile();
|
||
var selector = new Selector<T>(_serviceProvider);
|
||
var descriptor = func(selector).Where(r => r.TenantId, tenantId);
|
||
|
||
return descriptor.GetDescriptorForDelete(this, immediately);
|
||
}
|
||
|
||
private Func<UpdateByQueryDescriptor<T>, IUpdateByQueryRequest> GetDescriptorForUpdate(T data, Expression<Func<Selector<T>, Selector<T>>> expression, int tenantId, bool immediately = true, params Expression<Func<T, object>>[] fields)
|
||
{
|
||
var func = expression.Compile();
|
||
var selector = new Selector<T>(_serviceProvider);
|
||
var descriptor = func(selector).Where(r => r.TenantId, tenantId);
|
||
|
||
return descriptor.GetDescriptorForUpdate(this, GetScriptUpdateByQuery(data, fields), immediately);
|
||
}
|
||
|
||
private Func<UpdateByQueryDescriptor<T>, IUpdateByQueryRequest> GetDescriptorForUpdate(T data, Expression<Func<Selector<T>, Selector<T>>> expression, int tenantId, UpdateAction action, Expression<Func<T, IList>> fields, bool immediately = true)
|
||
{
|
||
var func = expression.Compile();
|
||
var selector = new Selector<T>(_serviceProvider);
|
||
var descriptor = func(selector).Where(r => r.TenantId, tenantId);
|
||
|
||
return descriptor.GetDescriptorForUpdate(this, GetScriptForUpdate(data, action, fields), immediately);
|
||
}
|
||
}
|
||
|
||
static class CamelCaseExtension
|
||
{
|
||
internal static string ToLowerCamelCase(this string str)
|
||
{
|
||
return str.ToLowerInvariant()[0] + str.Substring(1);
|
||
}
|
||
}
|