From ec2802a0a122d4ce660e7c827921944e3773833a Mon Sep 17 00:00:00 2001
From: "Collin M. Barrett" <collinbarrett@users.noreply.github.com>
Date: Mon, 20 Aug 2018 13:56:50 -0500
Subject: [PATCH] add AI exception tracking to SnapshotService

---
 src/FilterLists.Services/Snapshot/Snapshot.cs | 20 +++++++++++++++----
 1 file changed, 16 insertions(+), 4 deletions(-)

diff --git a/src/FilterLists.Services/Snapshot/Snapshot.cs b/src/FilterLists.Services/Snapshot/Snapshot.cs
index e2c8605a15..0e63d382d3 100644
--- a/src/FilterLists.Services/Snapshot/Snapshot.cs
+++ b/src/FilterLists.Services/Snapshot/Snapshot.cs
@@ -4,11 +4,13 @@
 using System.Linq;
 using System.Net;
 using System.Net.Http;
+using System.Threading;
 using System.Threading.Tasks;
 using FilterLists.Data;
 using FilterLists.Data.Entities.Junctions;
 using FilterLists.Services.Extensions;
 using FilterLists.Services.Snapshot.Models;
+using Microsoft.ApplicationInsights;
 using MoreLinq;
 
 namespace FilterLists.Services.Snapshot
@@ -19,11 +21,13 @@ public class Snapshot
         private readonly FilterListsDbContext dbContext;
         private readonly FilterListViewUrlDto list;
         private readonly Data.Entities.Snapshot snapEntity;
+        private readonly TelemetryClient telemetryClient;
 
         public Snapshot(FilterListsDbContext dbContext, FilterListViewUrlDto list)
         {
             this.dbContext = dbContext;
             this.list = list;
+            telemetryClient = new TelemetryClient();
             snapEntity = new Data.Entities.Snapshot
             {
                 FilterListId = list.Id,
@@ -39,10 +43,9 @@ public async Task TrySaveAsync()
             {
                 await SaveAsync();
             }
-            catch (Exception)
+            catch (Exception e)
             {
-                //allow other snapshots to continue
-                //TODO: log
+                TrackException(e);
             }
         }
 
@@ -74,13 +77,15 @@ private async Task<IEnumerable<string>> TryGetLines()
             {
                 return await GetLines();
             }
-            catch (HttpRequestException)
+            catch (HttpRequestException hre)
             {
+                TrackException(hre);
                 return null;
             }
             catch (WebException we)
             {
                 snapEntity.HttpStatusCode = ((int)((HttpWebResponse)we.Response).StatusCode).ToString();
+                TrackException(we);
                 return null;
             }
         }
@@ -155,5 +160,12 @@ private async Task SetSuccessful()
             snapEntity.WasSuccessful = true;
             await dbContext.SaveChangesAsync();
         }
+
+        private void TrackException(Exception e)
+        {
+            telemetryClient.TrackException(e);
+            telemetryClient.Flush();
+            Thread.Sleep(5000);
+        }
     }
 }
\ No newline at end of file