diff options
author | natrixaeria <janng@gmx.de> | 2019-05-19 17:40:59 +0200 |
---|---|---|
committer | natrixaeria <janng@gmx.de> | 2019-05-19 17:40:59 +0200 |
commit | 1509b5ef3d7e9e71d9294e234ec0e39f2d831998 (patch) | |
tree | 78300ffff230958101b422a4e6026925b287822f /FireBase/Offline/RealtimeDatabase.cs | |
parent | c3bb858bb54dc8c64bbd48054c2c58dc0073f09c (diff) | |
parent | c4d046858e0822b7c2c540ac2368b2c0e88e7a26 (diff) |
Merge branch 'scribble' of https://github.com/TrueDoctor/DiscoBot into scribble
Diffstat (limited to 'FireBase/Offline/RealtimeDatabase.cs')
-rw-r--r-- | FireBase/Offline/RealtimeDatabase.cs | 422 |
1 files changed, 221 insertions, 201 deletions
diff --git a/FireBase/Offline/RealtimeDatabase.cs b/FireBase/Offline/RealtimeDatabase.cs index 61a7010..973db46 100644 --- a/FireBase/Offline/RealtimeDatabase.cs +++ b/FireBase/Offline/RealtimeDatabase.cs @@ -1,252 +1,265 @@ -namespace Firebase.Database.Offline +using System; +using System.Collections.Generic; +using System.Linq; +using System.Linq.Expressions; +using System.Net; +using System.Reactive.Disposables; +using System.Reactive.Linq; +using System.Reactive.Subjects; +using System.Reactive.Threading.Tasks; +using System.Reflection; +using System.Threading; +using System.Threading.Tasks; +using Firebase.Database.Extensions; +using Firebase.Database.Offline.Internals; +using Firebase.Database.Query; +using Firebase.Database.Streaming; +using Newtonsoft.Json; + +namespace Firebase.Database.Offline { - using System; - using System.Collections.Generic; - using System.Linq; - using System.Reactive.Linq; - using System.Reactive.Subjects; - using System.Threading; - using System.Threading.Tasks; - - using Firebase.Database.Extensions; - using Firebase.Database.Query; - using Firebase.Database.Streaming; - using System.Reactive.Threading.Tasks; - using System.Linq.Expressions; - using Internals; - using Newtonsoft.Json; - using System.Reflection; - using System.Reactive.Disposables; - /// <summary> - /// The real-time Database which synchronizes online and offline data. + /// The real-time Database which synchronizes online and offline data. /// </summary> /// <typeparam name="T"> Type of entities. </typeparam> - public partial class RealtimeDatabase<T> : IDisposable where T : class + public class RealtimeDatabase<T> : IDisposable where T : class { private readonly ChildQuery childQuery; private readonly string elementRoot; - private readonly StreamingOptions streamingOptions; - private readonly Subject<FirebaseEvent<T>> subject; + private readonly FirebaseCache<T> firebaseCache; private readonly InitialPullStrategy initialPullStrategy; private readonly bool pushChanges; - private readonly FirebaseCache<T> firebaseCache; + private readonly StreamingOptions streamingOptions; + private readonly Subject<FirebaseEvent<T>> subject; + private FirebaseSubscription<T> firebaseSubscription; private bool isSyncRunning; private IObservable<FirebaseEvent<T>> observable; - private FirebaseSubscription<T> firebaseSubscription; /// <summary> - /// Initializes a new instance of the <see cref="RealtimeDatabase{T}"/> class. + /// Initializes a new instance of the <see cref="RealtimeDatabase{T}" /> class. /// </summary> /// <param name="childQuery"> The child query. </param> /// <param name="elementRoot"> The element Root. </param> /// <param name="offlineDatabaseFactory"> The offline database factory. </param> /// <param name="filenameModifier"> Custom string which will get appended to the file name. </param> /// <param name="streamChanges"> Specifies whether changes should be streamed from the server. </param> - /// <param name="pullEverythingOnStart"> Specifies if everything should be pull from the online storage on start. It only makes sense when <see cref="streamChanges"/> is set to true. </param> - /// <param name="pushChanges"> Specifies whether changed items should actually be pushed to the server. If this is false, then Put / Post / Delete will not affect server data. </param> - public RealtimeDatabase(ChildQuery childQuery, string elementRoot, Func<Type, string, IDictionary<string, OfflineEntry>> offlineDatabaseFactory, string filenameModifier, StreamingOptions streamingOptions, InitialPullStrategy initialPullStrategy, bool pushChanges, ISetHandler<T> setHandler = null) + /// <param name="pullEverythingOnStart"> + /// Specifies if everything should be pull from the online storage on start. It only + /// makes sense when <see cref="streamChanges" /> is set to true. + /// </param> + /// <param name="pushChanges"> + /// Specifies whether changed items should actually be pushed to the server. If this is false, + /// then Put / Post / Delete will not affect server data. + /// </param> + public RealtimeDatabase(ChildQuery childQuery, string elementRoot, + Func<Type, string, IDictionary<string, OfflineEntry>> offlineDatabaseFactory, string filenameModifier, + StreamingOptions streamingOptions, InitialPullStrategy initialPullStrategy, bool pushChanges, + ISetHandler<T> setHandler = null) { this.childQuery = childQuery; this.elementRoot = elementRoot; this.streamingOptions = streamingOptions; this.initialPullStrategy = initialPullStrategy; this.pushChanges = pushChanges; - this.Database = offlineDatabaseFactory(typeof(T), filenameModifier); - this.firebaseCache = new FirebaseCache<T>(new OfflineCacheAdapter<string, T>(this.Database)); - this.subject = new Subject<FirebaseEvent<T>>(); + Database = offlineDatabaseFactory(typeof(T), filenameModifier); + firebaseCache = new FirebaseCache<T>(new OfflineCacheAdapter<string, T>(Database)); + subject = new Subject<FirebaseEvent<T>>(); - this.PutHandler = setHandler ?? new SetHandler<T>(); + PutHandler = setHandler ?? new SetHandler<T>(); - this.isSyncRunning = true; - Task.Factory.StartNew(this.SynchronizeThread, CancellationToken.None, TaskCreationOptions.LongRunning, TaskScheduler.Default); + isSyncRunning = true; + Task.Factory.StartNew(SynchronizeThread, CancellationToken.None, TaskCreationOptions.LongRunning, + TaskScheduler.Default); } /// <summary> - /// Event raised whenever an exception is thrown in the synchronization thread. Exception thrown in there are swallowed, so this event is the only way to get to them. + /// Gets the backing Database. /// </summary> - public event EventHandler<ExceptionEventArgs> SyncExceptionThrown; + public IDictionary<string, OfflineEntry> Database { get; } - /// <summary> - /// Gets the backing Database. - /// </summary> - public IDictionary<string, OfflineEntry> Database - { - get; - private set; - } + public ISetHandler<T> PutHandler { private get; set; } - public ISetHandler<T> PutHandler + public void Dispose() { - private get; - set; + subject.OnCompleted(); + firebaseSubscription?.Dispose(); } /// <summary> - /// Overwrites existing object with given key. + /// Event raised whenever an exception is thrown in the synchronization thread. Exception thrown in there are + /// swallowed, so this event is the only way to get to them. + /// </summary> + public event EventHandler<ExceptionEventArgs> SyncExceptionThrown; + + /// <summary> + /// Overwrites existing object with given key. /// </summary> /// <param name="key"> The key. </param> /// <param name="obj"> The object to set. </param> /// <param name="syncOnline"> Indicates whether the item should be synced online. </param> - /// <param name="priority"> The priority. Objects with higher priority will be synced first. Higher number indicates higher priority. </param> + /// <param name="priority"> + /// The priority. Objects with higher priority will be synced first. Higher number indicates higher + /// priority. + /// </param> public void Set(string key, T obj, SyncOptions syncOptions, int priority = 1) { - this.SetAndRaise(key, new OfflineEntry(key, obj, priority, syncOptions)); + SetAndRaise(key, new OfflineEntry(key, obj, priority, syncOptions)); } - public void Set<TProperty>(string key, Expression<Func<T, TProperty>> propertyExpression, object value, SyncOptions syncOptions, int priority = 1) + public void Set<TProperty>(string key, Expression<Func<T, TProperty>> propertyExpression, object value, + SyncOptions syncOptions, int priority = 1) { - var fullKey = this.GenerateFullKey(key, propertyExpression, syncOptions); + var fullKey = GenerateFullKey(key, propertyExpression, syncOptions); var serializedObject = JsonConvert.SerializeObject(value).Trim('"', '\\'); if (fullKey.Item3) { if (typeof(TProperty) != typeof(string) || value == null) - { // don't escape non-string primitives and null; serializedObject = $"{{ \"{fullKey.Item2}\" : {serializedObject} }}"; - } else - { serializedObject = $"{{ \"{fullKey.Item2}\" : \"{serializedObject}\" }}"; - } } - var setObject = this.firebaseCache.PushData("/" + fullKey.Item1, serializedObject).First(); + var setObject = firebaseCache.PushData("/" + fullKey.Item1, serializedObject).First(); - if (!this.Database.ContainsKey(key) || this.Database[key].SyncOptions != SyncOptions.Patch && this.Database[key].SyncOptions != SyncOptions.Put) - { - this.Database[fullKey.Item1] = new OfflineEntry(fullKey.Item1, value, serializedObject, priority, syncOptions, true); - } + if (!Database.ContainsKey(key) || Database[key].SyncOptions != SyncOptions.Patch && + Database[key].SyncOptions != SyncOptions.Put) + Database[fullKey.Item1] = + new OfflineEntry(fullKey.Item1, value, serializedObject, priority, syncOptions, true); - this.subject.OnNext(new FirebaseEvent<T>(key, setObject.Object, setObject == null ? FirebaseEventType.Delete : FirebaseEventType.InsertOrUpdate, FirebaseEventSource.Offline)); + subject.OnNext(new FirebaseEvent<T>(key, setObject.Object, + setObject == null ? FirebaseEventType.Delete : FirebaseEventType.InsertOrUpdate, + FirebaseEventSource.Offline)); } /// <summary> - /// Fetches an object with the given key and adds it to the Database. + /// Fetches an object with the given key and adds it to the Database. /// </summary> /// <param name="key"> The key. </param> - /// <param name="priority"> The priority. Objects with higher priority will be synced first. Higher number indicates higher priority. </param> + /// <param name="priority"> + /// The priority. Objects with higher priority will be synced first. Higher number indicates higher + /// priority. + /// </param> public void Pull(string key, int priority = 1) { - if (!this.Database.ContainsKey(key)) - { - this.Database[key] = new OfflineEntry(key, null, priority, SyncOptions.Pull); - } - else if (this.Database[key].SyncOptions == SyncOptions.None) - { + if (!Database.ContainsKey(key)) + Database[key] = new OfflineEntry(key, null, priority, SyncOptions.Pull); + else if (Database[key].SyncOptions == SyncOptions.None) // pull only if push isn't pending - this.Database[key].SyncOptions = SyncOptions.Pull; - } + Database[key].SyncOptions = SyncOptions.Pull; } /// <summary> - /// Fetches everything from the remote database. + /// Fetches everything from the remote database. /// </summary> public async Task PullAsync() { - var existingEntries = await this.childQuery + var existingEntries = await childQuery .OnceAsync<T>() .ToObservable() .RetryAfterDelay<IReadOnlyCollection<FirebaseObject<T>>, FirebaseException>( - this.childQuery.Client.Options.SyncPeriod, - ex => ex.StatusCode == System.Net.HttpStatusCode.OK) // OK implies the request couldn't complete due to network error. - .Select(e => this.ResetDatabaseFromInitial(e, false)) + childQuery.Client.Options.SyncPeriod, + ex => ex.StatusCode == + HttpStatusCode + .OK) // OK implies the request couldn't complete due to network error. + .Select(e => ResetDatabaseFromInitial(e, false)) .SelectMany(e => e) - .Do(e => + .Do(e => { - this.Database[e.Key] = new OfflineEntry(e.Key, e.Object, 1, SyncOptions.None); - this.subject.OnNext(new FirebaseEvent<T>(e.Key, e.Object, FirebaseEventType.InsertOrUpdate, FirebaseEventSource.OnlinePull)); + Database[e.Key] = new OfflineEntry(e.Key, e.Object, 1, SyncOptions.None); + subject.OnNext(new FirebaseEvent<T>(e.Key, e.Object, FirebaseEventType.InsertOrUpdate, + FirebaseEventSource.OnlinePull)); }) .ToList(); // Remove items not stored online - foreach (var item in this.Database.Keys.Except(existingEntries.Select(f => f.Key)).ToList()) + foreach (var item in Database.Keys.Except(existingEntries.Select(f => f.Key)).ToList()) { - this.Database.Remove(item); - this.subject.OnNext(new FirebaseEvent<T>(item, null, FirebaseEventType.Delete, FirebaseEventSource.OnlinePull)); + Database.Remove(item); + subject.OnNext(new FirebaseEvent<T>(item, null, FirebaseEventType.Delete, + FirebaseEventSource.OnlinePull)); } } /// <summary> - /// Retrieves all offline items currently stored in local database. + /// Retrieves all offline items currently stored in local database. /// </summary> public IEnumerable<FirebaseObject<T>> Once() { - return this.Database + return Database .Where(kvp => !string.IsNullOrEmpty(kvp.Value.Data) && kvp.Value.Data != "null" && !kvp.Value.IsPartial) .Select(kvp => new FirebaseObject<T>(kvp.Key, kvp.Value.Deserialize<T>())) .ToList(); } - /// <summary> - /// Starts observing the real-time Database. Events will be fired both when change is done locally and remotely. - /// </summary> - /// <returns> Stream of <see cref="FirebaseEvent{T}"/>. </returns> + /// <summary> + /// Starts observing the real-time Database. Events will be fired both when change is done locally and remotely. + /// </summary> + /// <returns> Stream of <see cref="FirebaseEvent{T}" />. </returns> public IObservable<FirebaseEvent<T>> AsObservable() { - if (!this.isSyncRunning) + if (!isSyncRunning) { - this.isSyncRunning = true; - Task.Factory.StartNew(this.SynchronizeThread, CancellationToken.None, TaskCreationOptions.LongRunning, TaskScheduler.Default); + isSyncRunning = true; + Task.Factory.StartNew(SynchronizeThread, CancellationToken.None, TaskCreationOptions.LongRunning, + TaskScheduler.Default); } - if (this.observable == null) + if (observable == null) { var initialData = Observable.Return(FirebaseEvent<T>.Empty(FirebaseEventSource.Offline)); - if(this.Database.TryGetValue(this.elementRoot, out OfflineEntry oe)) - { + if (Database.TryGetValue(elementRoot, out var oe)) initialData = Observable.Return(oe) - .Where(offlineEntry => !string.IsNullOrEmpty(offlineEntry.Data) && offlineEntry.Data != "null" && !offlineEntry.IsPartial) - .Select(offlineEntry => new FirebaseEvent<T>(offlineEntry.Key, offlineEntry.Deserialize<T>(), FirebaseEventType.InsertOrUpdate, FirebaseEventSource.Offline)); - } - else if(this.Database.Count > 0) - { - initialData = this.Database - .Where(kvp => !string.IsNullOrEmpty(kvp.Value.Data) && kvp.Value.Data != "null" && !kvp.Value.IsPartial) - .Select(kvp => new FirebaseEvent<T>(kvp.Key, kvp.Value.Deserialize<T>(), FirebaseEventType.InsertOrUpdate, FirebaseEventSource.Offline)) + .Where(offlineEntry => + !string.IsNullOrEmpty(offlineEntry.Data) && offlineEntry.Data != "null" && + !offlineEntry.IsPartial) + .Select(offlineEntry => new FirebaseEvent<T>(offlineEntry.Key, offlineEntry.Deserialize<T>(), + FirebaseEventType.InsertOrUpdate, FirebaseEventSource.Offline)); + else if (Database.Count > 0) + initialData = Database + .Where(kvp => + !string.IsNullOrEmpty(kvp.Value.Data) && kvp.Value.Data != "null" && !kvp.Value.IsPartial) + .Select(kvp => new FirebaseEvent<T>(kvp.Key, kvp.Value.Deserialize<T>(), + FirebaseEventType.InsertOrUpdate, FirebaseEventSource.Offline)) .ToList() .ToObservable(); - } - this.observable = initialData - .Merge(this.subject) - .Merge(this.GetInitialPullObservable() - .RetryAfterDelay<IReadOnlyCollection<FirebaseObject<T>>, FirebaseException>( - this.childQuery.Client.Options.SyncPeriod, - ex => ex.StatusCode == System.Net.HttpStatusCode.OK) // OK implies the request couldn't complete due to network error. - .Select(e => this.ResetDatabaseFromInitial(e)) - .SelectMany(e => e) - .Do(this.SetObjectFromInitialPull) - .Select(e => new FirebaseEvent<T>(e.Key, e.Object, e.Object == null ? FirebaseEventType.Delete : FirebaseEventType.InsertOrUpdate, FirebaseEventSource.OnlineInitial)) - .Concat(Observable.Create<FirebaseEvent<T>>(observer => this.InitializeStreamingSubscription(observer)))) - .Do(next => { }, e => this.observable = null, () => this.observable = null) + observable = initialData + .Merge(subject) + .Merge(GetInitialPullObservable() + .RetryAfterDelay<IReadOnlyCollection<FirebaseObject<T>>, FirebaseException>( + childQuery.Client.Options.SyncPeriod, + ex => ex.StatusCode == + HttpStatusCode + .OK) // OK implies the request couldn't complete due to network error. + .Select(e => ResetDatabaseFromInitial(e)) + .SelectMany(e => e) + .Do(SetObjectFromInitialPull) + .Select(e => new FirebaseEvent<T>(e.Key, e.Object, + e.Object == null ? FirebaseEventType.Delete : FirebaseEventType.InsertOrUpdate, + FirebaseEventSource.OnlineInitial)) + .Concat(Observable.Create<FirebaseEvent<T>>(observer => + InitializeStreamingSubscription(observer)))) + .Do(next => { }, e => observable = null, () => observable = null) .Replay() .RefCount(); } - return this.observable; - } - - public void Dispose() - { - this.subject.OnCompleted(); - this.firebaseSubscription?.Dispose(); + return observable; } - private IReadOnlyCollection<FirebaseObject<T>> ResetDatabaseFromInitial(IReadOnlyCollection<FirebaseObject<T>> collection, bool onlyWhenInitialEverything = true) + private IReadOnlyCollection<FirebaseObject<T>> ResetDatabaseFromInitial( + IReadOnlyCollection<FirebaseObject<T>> collection, bool onlyWhenInitialEverything = true) { - if (onlyWhenInitialEverything && this.initialPullStrategy != InitialPullStrategy.Everything) - { - return collection; - } + if (onlyWhenInitialEverything && initialPullStrategy != InitialPullStrategy.Everything) return collection; // items which are in local db, but not in the online collection - var extra = this.Once() - .Select(f => f.Key) - .Except(collection.Select(c => c.Key)) - .Select(k => new FirebaseObject<T>(k, null)); + var extra = Once() + .Select(f => f.Key) + .Except(collection.Select(c => c.Key)) + .Select(k => new FirebaseObject<T>(k, null)); return collection.Concat(extra).ToList(); } @@ -257,101 +270,101 @@ // and the InitialPullStrategy != Everything // this attempts to deal with scenario when you are offline, have local changes and go online // in this case having the InitialPullStrategy set to everything would basically purge all local changes - if (!this.Database.ContainsKey(e.Key) || this.Database[e.Key].SyncOptions == SyncOptions.None || this.Database[e.Key].SyncOptions == SyncOptions.Pull || this.initialPullStrategy != InitialPullStrategy.Everything) - { - this.Database[e.Key] = new OfflineEntry(e.Key, e.Object, 1, SyncOptions.None); - } + if (!Database.ContainsKey(e.Key) || Database[e.Key].SyncOptions == SyncOptions.None || + Database[e.Key].SyncOptions == SyncOptions.Pull || + initialPullStrategy != InitialPullStrategy.Everything) + Database[e.Key] = new OfflineEntry(e.Key, e.Object, 1, SyncOptions.None); } private IObservable<IReadOnlyCollection<FirebaseObject<T>>> GetInitialPullObservable() { FirebaseQuery query; - switch (this.initialPullStrategy) + switch (initialPullStrategy) { case InitialPullStrategy.MissingOnly: - query = this.childQuery.OrderByKey().StartAt(() => this.GetLatestKey()); + query = childQuery.OrderByKey().StartAt(() => GetLatestKey()); break; case InitialPullStrategy.Everything: - query = this.childQuery; + query = childQuery; break; case InitialPullStrategy.None: default: return Observable.Empty<IReadOnlyCollection<FirebaseEvent<T>>>(); } - if (string.IsNullOrWhiteSpace(this.elementRoot)) - { + if (string.IsNullOrWhiteSpace(elementRoot)) return Observable.Defer(() => query.OnceAsync<T>().ToObservable()); - } - + // there is an element root, which indicates the target location is not a collection but a single element - return Observable.Defer(async () => Observable.Return(await query.OnceSingleAsync<T>()).Select(e => new[] { new FirebaseObject<T>(this.elementRoot, e) })); + return Observable.Defer(async () => + Observable.Return(await query.OnceSingleAsync<T>()) + .Select(e => new[] {new FirebaseObject<T>(elementRoot, e)})); } private IDisposable InitializeStreamingSubscription(IObserver<FirebaseEvent<T>> observer) { - var completeDisposable = Disposable.Create(() => this.isSyncRunning = false); + var completeDisposable = Disposable.Create(() => isSyncRunning = false); - switch (this.streamingOptions) + switch (streamingOptions) { case StreamingOptions.LatestOnly: // stream since the latest key - var queryLatest = this.childQuery.OrderByKey().StartAt(() => this.GetLatestKey()); - this.firebaseSubscription = new FirebaseSubscription<T>(observer, queryLatest, this.elementRoot, this.firebaseCache); - this.firebaseSubscription.ExceptionThrown += this.StreamingExceptionThrown; + var queryLatest = childQuery.OrderByKey().StartAt(() => GetLatestKey()); + firebaseSubscription = + new FirebaseSubscription<T>(observer, queryLatest, elementRoot, firebaseCache); + firebaseSubscription.ExceptionThrown += StreamingExceptionThrown; - return new CompositeDisposable(this.firebaseSubscription.Run(), completeDisposable); + return new CompositeDisposable(firebaseSubscription.Run(), completeDisposable); case StreamingOptions.Everything: // stream everything - var queryAll = this.childQuery; - this.firebaseSubscription = new FirebaseSubscription<T>(observer, queryAll, this.elementRoot, this.firebaseCache); - this.firebaseSubscription.ExceptionThrown += this.StreamingExceptionThrown; + var queryAll = childQuery; + firebaseSubscription = new FirebaseSubscription<T>(observer, queryAll, elementRoot, firebaseCache); + firebaseSubscription.ExceptionThrown += StreamingExceptionThrown; - return new CompositeDisposable(this.firebaseSubscription.Run(), completeDisposable); - default: - break; + return new CompositeDisposable(firebaseSubscription.Run(), completeDisposable); } return completeDisposable; } - private void SetAndRaise(string key, OfflineEntry obj, FirebaseEventSource eventSource = FirebaseEventSource.Offline) + private void SetAndRaise(string key, OfflineEntry obj, + FirebaseEventSource eventSource = FirebaseEventSource.Offline) { - this.Database[key] = obj; - this.subject.OnNext(new FirebaseEvent<T>(key, obj?.Deserialize<T>(), string.IsNullOrEmpty(obj?.Data) || obj?.Data == "null" ? FirebaseEventType.Delete : FirebaseEventType.InsertOrUpdate, eventSource)); + Database[key] = obj; + subject.OnNext(new FirebaseEvent<T>(key, obj?.Deserialize<T>(), + string.IsNullOrEmpty(obj?.Data) || obj?.Data == "null" + ? FirebaseEventType.Delete + : FirebaseEventType.InsertOrUpdate, eventSource)); } private async void SynchronizeThread() { - while (this.isSyncRunning) + while (isSyncRunning) { try { - var validEntries = this.Database.Where(e => e.Value != null); - await this.PullEntriesAsync(validEntries.Where(kvp => kvp.Value.SyncOptions == SyncOptions.Pull)); + var validEntries = Database.Where(e => e.Value != null); + await PullEntriesAsync(validEntries.Where(kvp => kvp.Value.SyncOptions == SyncOptions.Pull)); - if (this.pushChanges) - { - await this.PushEntriesAsync(validEntries.Where(kvp => kvp.Value.SyncOptions == SyncOptions.Put || kvp.Value.SyncOptions == SyncOptions.Patch)); - } + if (pushChanges) + await PushEntriesAsync(validEntries.Where(kvp => + kvp.Value.SyncOptions == SyncOptions.Put || kvp.Value.SyncOptions == SyncOptions.Patch)); } catch (Exception ex) { - this.SyncExceptionThrown?.Invoke(this, new ExceptionEventArgs(ex)); + SyncExceptionThrown?.Invoke(this, new ExceptionEventArgs(ex)); } - await Task.Delay(this.childQuery.Client.Options.SyncPeriod); + await Task.Delay(childQuery.Client.Options.SyncPeriod); } } private string GetLatestKey() { - var key = this.Database.OrderBy(o => o.Key, StringComparer.Ordinal).LastOrDefault().Key ?? string.Empty; + var key = Database.OrderBy(o => o.Key, StringComparer.Ordinal).LastOrDefault().Key ?? string.Empty; if (!string.IsNullOrWhiteSpace(key)) - { - key = key.Substring(0, key.Length - 1) + (char)(key[key.Length - 1] + 1); - } + key = key.Substring(0, key.Length - 1) + (char) (key[key.Length - 1] + 1); return key; } @@ -362,10 +375,11 @@ foreach (var group in groups) { - var tasks = group.OrderBy(kvp => kvp.Value.IsPartial).Select(kvp => - kvp.Value.IsPartial ? - this.ResetSyncAfterPush(this.PutHandler.SetAsync(this.childQuery, kvp.Key, kvp.Value), kvp.Key) : - this.ResetSyncAfterPush(this.PutHandler.SetAsync(this.childQuery, kvp.Key, kvp.Value), kvp.Key, kvp.Value.Deserialize<T>())); + var tasks = group.OrderBy(kvp => kvp.Value.IsPartial).Select(kvp => + kvp.Value.IsPartial + ? ResetSyncAfterPush(PutHandler.SetAsync(childQuery, kvp.Key, kvp.Value), kvp.Key) + : ResetSyncAfterPush(PutHandler.SetAsync(childQuery, kvp.Key, kvp.Value), kvp.Key, + kvp.Value.Deserialize<T>())); try { @@ -373,7 +387,7 @@ } catch (Exception ex) { - this.SyncExceptionThrown?.Invoke(this, new ExceptionEventArgs(ex)); + SyncExceptionThrown?.Invoke(this, new ExceptionEventArgs(ex)); } } } @@ -384,15 +398,18 @@ foreach (var group in taskGroups) { - var tasks = group.Select(pair => this.ResetAfterPull(this.childQuery.Child(pair.Key == this.elementRoot ? string.Empty : pair.Key).OnceSingleAsync<T>(), pair.Key, pair.Value)); + var tasks = group.Select(pair => + ResetAfterPull( + childQuery.Child(pair.Key == elementRoot ? string.Empty : pair.Key).OnceSingleAsync<T>(), + pair.Key, pair.Value)); try - { + { await Task.WhenAll(tasks).WithAggregateException(); } catch (Exception ex) { - this.SyncExceptionThrown?.Invoke(this, new ExceptionEventArgs(ex)); + SyncExceptionThrown?.Invoke(this, new ExceptionEventArgs(ex)); } } } @@ -400,46 +417,48 @@ private async Task ResetAfterPull(Task<T> task, string key, OfflineEntry entry) { await task; - this.SetAndRaise(key, new OfflineEntry(key, task.Result, entry.Priority, SyncOptions.None), FirebaseEventSource.OnlinePull); + SetAndRaise(key, new OfflineEntry(key, task.Result, entry.Priority, SyncOptions.None), + FirebaseEventSource.OnlinePull); } private async Task ResetSyncAfterPush(Task task, string key, T obj) { - await this.ResetSyncAfterPush(task, key); + await ResetSyncAfterPush(task, key); - if (this.streamingOptions == StreamingOptions.None) - { - this.subject.OnNext(new FirebaseEvent<T>(key, obj, obj == null ? FirebaseEventType.Delete : FirebaseEventType.InsertOrUpdate, FirebaseEventSource.OnlinePush)); - } + if (streamingOptions == StreamingOptions.None) + subject.OnNext(new FirebaseEvent<T>(key, obj, + obj == null ? FirebaseEventType.Delete : FirebaseEventType.InsertOrUpdate, + FirebaseEventSource.OnlinePush)); } private async Task ResetSyncAfterPush(Task task, string key) { await task; - this.ResetSyncOptions(key); + ResetSyncOptions(key); } private void ResetSyncOptions(string key) { - var item = this.Database[key]; + var item = Database[key]; if (item.IsPartial) { - this.Database.Remove(key); + Database.Remove(key); } else { item.SyncOptions = SyncOptions.None; - this.Database[key] = item; + Database[key] = item; } } private void StreamingExceptionThrown(object sender, ExceptionEventArgs<FirebaseException> e) { - this.SyncExceptionThrown?.Invoke(this, new ExceptionEventArgs(e.Exception)); + SyncExceptionThrown?.Invoke(this, new ExceptionEventArgs(e.Exception)); } - private Tuple<string, string, bool> GenerateFullKey<TProperty>(string key, Expression<Func<T, TProperty>> propertyGetter, SyncOptions syncOptions) + private Tuple<string, string, bool> GenerateFullKey<TProperty>(string key, + Expression<Func<T, TProperty>> propertyGetter, SyncOptions syncOptions) { var visitor = new MemberAccessVisitor(); visitor.Visit(propertyGetter); @@ -447,13 +466,14 @@ var prefix = key == string.Empty ? string.Empty : key + "/"; // primitive types - if (syncOptions == SyncOptions.Patch && (propertyType.IsPrimitive || Nullable.GetUnderlyingType(typeof(TProperty)) != null || typeof(TProperty) == typeof(string))) - { - return Tuple.Create(prefix + string.Join("/", visitor.PropertyNames.Skip(1).Reverse()), visitor.PropertyNames.First(), true); - } - - return Tuple.Create(prefix + string.Join("/", visitor.PropertyNames.Reverse()), visitor.PropertyNames.First(), false); + if (syncOptions == SyncOptions.Patch && (propertyType.IsPrimitive || + Nullable.GetUnderlyingType(typeof(TProperty)) != null || + typeof(TProperty) == typeof(string))) + return Tuple.Create(prefix + string.Join("/", visitor.PropertyNames.Skip(1).Reverse()), + visitor.PropertyNames.First(), true); + + return Tuple.Create(prefix + string.Join("/", visitor.PropertyNames.Reverse()), + visitor.PropertyNames.First(), false); } - } -} +}
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