diagnose: surface missing method details for ticket history

F4SDM42WebApi/F4SD - M42WebApi.csproj

@@ -13,7 +13,7 @@
     <EnableDefaultCompileItems>false</EnableDefaultCompileItems>
     <M42ExtensionId>6673a25d-33d6-4072-91d9-abed4be1a966</M42ExtensionId>
     <M42AssemblyPattern>C4ITF4SD*.*</M42AssemblyPattern>
-    <M42PackageVersion>1.4.0.22</M42PackageVersion>
+    <M42PackageVersion>1.4.0.23</M42PackageVersion>
     <M42BuildPackage>true</M42BuildPackage>
   </PropertyGroup>
 

F4SDM42WebApi/F4SDHelperService.cs

@@ -1431,6 +1431,10 @@ namespace C4IT.F4SD
                 }
                 return journalEntries;
             }
+            catch (MissingMethodException E)
+            {
+                return F4SDM42WebApiController.CreateMissingMethodDiagnostics("GetJournalEntries helper", activityEOID, E);
+            }
             catch (Exception E)
             {
                 LogException(E);

F4SDM42WebApi/F4SDM42WebApiController.cs

@@ -5,6 +5,7 @@ using System.Linq;
 using System.Net;
 using System.Net.Http;
 using System.Reflection;
+using System.Text;
 using System.Threading;
 using System.Threading.Tasks;
 
@@ -139,9 +140,82 @@ namespace C4IT.F4SD
 
         [Route("getTicketHistory"), HttpGet]
         public async Task<List<cTicketJournalItem>> getTicketHistory(Guid objectId)
+        {
+            try
             {
                 return await _f4stHelperService.GetJournalEntries(objectId);
             }
+            catch (MissingMethodException ex)
+            {
+                return CreateMissingMethodDiagnostics("getTicketHistory controller", objectId, ex);
+            }
+        }
+
+        internal static List<cTicketJournalItem> CreateMissingMethodDiagnostics(string stage, Guid objectId, MissingMethodException ex)
+        {
+            var details = BuildMissingMethodDiagnostic(stage, objectId, ex);
+            LogEntry(details, LogLevels.Warning);
+
+            return new List<cTicketJournalItem>
+            {
+                new cTicketJournalItem
+                {
+                    ActivityObjectId = objectId,
+                    CreatedBy = "C4ITF4SDM42WebApi",
+                    CreationDate = DateTime.Now,
+                    Header = "MissingMethodException diagnostic",
+                    Description = details,
+                    DescriptionHtml = WebUtility.HtmlEncode(details).Replace(Environment.NewLine, "<br />"),
+                    IsVisibleForUser = false
+                }
+            };
+        }
+
+        private static string BuildMissingMethodDiagnostic(string stage, Guid objectId, MissingMethodException ex)
+        {
+            var builder = new StringBuilder();
+            builder.AppendLine($"Stage: {stage}");
+            builder.AppendLine($"ObjectId: {objectId}");
+            builder.AppendLine(ex.ToString());
+            builder.AppendLine("Loaded assemblies:");
+
+            var assemblyNames = new HashSet<string>(StringComparer.OrdinalIgnoreCase)
+            {
+                "C4ITF4SDM42WebApi",
+                "C4ITF4SDM42WebApiHelper",
+                "Matrix42.Common",
+                "Matrix42.Common.Html",
+                "Matrix42.Contracts.Platform",
+                "Matrix42.Contracts.ServiceManagement",
+                "Matrix42.ServiceManager.BizLogic",
+                "Matrix42.BizLogic.Journal",
+                "Newtonsoft.Json",
+                "System.Net.Http.Formatting",
+                "update4u.SPS.DataLayer",
+                "update4u.SPS.Security"
+            };
+
+            foreach (var assembly in AppDomain.CurrentDomain.GetAssemblies()
+                .Where(assembly => assemblyNames.Contains(assembly.GetName().Name))
+                .OrderBy(assembly => assembly.GetName().Name))
+            {
+                builder.AppendLine($"{assembly.GetName().Name}, Version={assembly.GetName().Version}, Location={GetAssemblyLocation(assembly)}");
+            }
+
+            return builder.ToString();
+        }
+
+        private static string GetAssemblyLocation(Assembly assembly)
+        {
+            try
+            {
+                return assembly.Location;
+            }
+            catch
+            {
+                return string.Empty;
+            }
+        }
 
         [Route("getTicketOverviewCounts"), HttpGet]
         public async Task<F4SDHelperService.TicketOverviewCountsResult> getTicketOverviewCounts(