61 lines
1.8 KiB
C#
61 lines
1.8 KiB
C#
using System;
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using System.Linq.Expressions;
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using System.Reflection;
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using Microsoft.Practices.Unity;
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using Microsoft.Practices.Unity.InterceptionExtension;
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using Portoa.Persistence;
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using VideoGameQuotes.Api;
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using VideoGameQuotes.Api.Search;
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namespace VideoGameQuotes.Web.Configuration {
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public class UpdateSearchIndex : UnityContainerExtension {
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protected override void Initialize() {
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Container
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.Configure<Interception>()
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.AddPolicy("UpdateSearchIndexPolicy")
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.AddCallHandler<UpdateSearchIndexCallHandler>()
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.AddMatchingRule<QuoteUpdatedMatchingRule>();
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}
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}
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public class QuoteUpdatedMatchingRule : IMatchingRule {
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private static readonly MethodBase saveMethod = typeof(IRepository<Quote, int>).GetMethod("Save", new[] { typeof(Quote) });
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public bool Matches(MethodBase member) {
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return member == saveMethod;
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}
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}
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public class UpdateSearchIndexCallHandler : ICallHandler {
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private readonly IUnityContainer container;
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/// <remarks>
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/// Can't inject ISearchIndexBuilder because it causes an infinite loop
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/// while trying to instantiate the call handler. So we do a later resolve
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/// on the index builder so that this shit fucking works.
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/// </remarks>
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public UpdateSearchIndexCallHandler(IUnityContainer container) {
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this.container = container;
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}
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public IMethodReturn Invoke(IMethodInvocation input, GetNextHandlerDelegate getNext) {
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var returnValue = getNext()(input, getNext);
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if (returnValue.Exception != null) {
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//if the update failed then just return
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return returnValue;
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}
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var quote = returnValue.ReturnValue as Quote;
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if (quote == null) {
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return returnValue;
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}
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container.Resolve<ISearchIndexBuilder<Quote>>().UpdateIndex(quote);
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return returnValue;
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}
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public int Order { get; set; }
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}
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} |