コード例 #1
0
        /// <summary>
        /// Saves the provided <paramref name="snapshot"/> into storage.
        /// </summary>
        /// <param name="snapshot">the <see cref="Snapshot"/> to save and store.</param>
        public override void Save(Snapshot snapshot)
        {
            Logger.LogDebug("Persisting aggregate root snapshot", string.Format("{0}\\Save", GetType().Name));
            try
            {
                using (DocumentClient client = AzureDocumentDbSnapshotStoreConnectionStringFactory.GetSnapshotStoreConnectionClient())
                {
                    Database           database       = AzureDocumentDbHelper.CreateOrReadDatabase(client, AzureDocumentDbSnapshotStoreConnectionStringFactory.GetSnapshotStoreConnectionDatabaseName()).Result;
                    string             collectionName = AzureDocumentDbSnapshotStoreConnectionStringFactory.GetSnapshotStoreConnectionCollectionName();
                    DocumentCollection collection     = AzureDocumentDbHelper.CreateOrReadCollection(client, database, collectionName, UniqueIndexProperties).Result;

                    Logger.LogDebug("Creating document for snapshot asynchronously", string.Format("{0}\\Save", GetType().Name));
                    AzureDocumentDbHelper.ExecuteFaultTollerantFunction
                    (
                        () =>
                    {
                        Task <ResourceResponse <Document> > work = client.CreateDocumentAsync
                                                                   (
                            collection.SelfLink,
                            BuildEventData(snapshot)
                                                                   );
                        work.ConfigureAwait(false);
                        work.Wait();
                    }
                    );
                }
            }
            finally
            {
                Logger.LogDebug("Persisting aggregate root snapshot... Done", string.Format("{0}\\Save", GetType().Name));
            }
        }
コード例 #2
0
        /// <summary>
        /// Get the latest <see cref="Snapshot"/> from storage.
        /// </summary>
        /// <returns>The most recent <see cref="Snapshot"/> of</returns>
        protected virtual async Task <Snapshot> GetAsync(Type aggregateRootType, string streamName)
        {
            using (DocumentClient client = AzureDocumentDbSnapshotStoreConnectionStringFactory.GetSnapshotStoreConnectionClient())
            {
                Database           database       = AzureDocumentDbHelper.CreateOrReadDatabase(client, AzureDocumentDbSnapshotStoreConnectionStringFactory.GetSnapshotStoreConnectionDatabaseName()).Result;
                string             collectionName = AzureDocumentDbSnapshotStoreConnectionStringFactory.GetSnapshotStoreConnectionCollectionName();
                DocumentCollection collection     = AzureDocumentDbHelper.CreateOrReadCollection(client, database, collectionName, UniqueIndexProperties).Result;

                IOrderedQueryable <EventData> query = client.CreateDocumentQuery <EventData>(collection.SelfLink);

                IEnumerable <EventData> results = query.Where(snapshot => snapshot.AggregateId == streamName);

                return(AzureDocumentDbHelper.ExecuteFaultTollerantFunction(() =>
                                                                           results
                                                                           .ToList()
                                                                           .OrderByDescending(eventData => eventData.Version)
                                                                           .Take(1)
                                                                           .Select(EventDeserialiser.Deserialise)
                                                                           .SingleOrDefault()
                                                                           ));
            }
        }