change the communication protocol to RMQ

MalwareMultiScan.Api/Services/ScanResultService.cs

@@ -0,0 +1,95 @@
+using System;
+using System.IO;
+using System.Linq;
+using System.Net.Http;
+using System.Threading;
+using System.Threading.Tasks;
+using MalwareMultiScan.Api.Data.Configuration;
+using MalwareMultiScan.Api.Data.Models;
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.Logging;
+using MongoDB.Bson;
+using MongoDB.Driver;
+using MongoDB.Driver.GridFS;
+
+namespace MalwareMultiScan.Api.Services
+{
+    public class ScanResultService
+    {
+        private const string CollectionName = "ScanResults";
+        
+        private readonly IMongoCollection<ScanResult> _collection;
+        private readonly GridFSBucket _bucket;
+        
+        private readonly ScanBackendService _scanBackendService;
+
+        public ScanResultService(IMongoDatabase db, ScanBackendService scanBackendService)
+        {
+            _scanBackendService = scanBackendService;
+            
+            _collection = db.GetCollection<ScanResult>(CollectionName);
+            _bucket = new GridFSBucket(db);
+        }
+
+        public async Task<ScanResult> CreateScanResult()
+        {
+            var scanResult = new ScanResult
+            {
+                Results = _scanBackendService.List.ToDictionary(
+                    k => k.Id, v => new ScanResultEntry())
+            };
+
+            await _collection.InsertOneAsync(scanResult);
+            
+            return scanResult;
+        }
+
+        public async Task<ScanResult> GetScanResult(string id)
+        {
+            var result = await _collection.FindAsync(
+                Builders<ScanResult>.Filter.Where(r => r.Id == id));
+
+            return await result.FirstOrDefaultAsync();
+        }
+        
+        public async Task UpdateScanResultForBackend(string resultId, string backendId, 
+            bool completed = false, bool succeeded = false, string[] threats = null)
+        {
+            var filterScanResult = Builders<ScanResult>.Filter.Where(r => r.Id == resultId);
+            
+            var updateScanResult = Builders<ScanResult>.Update.Set(r => r.Results[backendId], new ScanResultEntry
+            {
+                Completed = completed,
+                Succeeded = succeeded,
+                Threats = threats
+            });
+
+            await _collection.UpdateOneAsync(filterScanResult, updateScanResult);
+        }
+
+        public async Task QueueUrlScan(ScanResult result, string fileUrl)
+        {
+            foreach (var backend in _scanBackendService.List)
+                await _scanBackendService.QueueUrlScan(result, backend, fileUrl);
+        }
+
+        public async Task<string> StoreFile(string fileName, Stream fileStream)
+        {
+            var objectId = await _bucket.UploadFromStreamAsync(
+                fileName, fileStream);
+
+            return objectId.ToString();
+        }
+
+        public async Task<Stream> ObtainFile(string id)
+        {
+            if (!ObjectId.TryParse(id, out var objectId))
+                return null;
+            
+            return await _bucket.OpenDownloadStreamAsync(objectId, new GridFSDownloadOptions
+            {
+                Seekable = true
+            });
+        }
+    }
+}