77 lines
2.5 KiB
C#
77 lines
2.5 KiB
C#
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using System;
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using System.Threading.Tasks;
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using System.Threading;
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using System.Collections.Generic;
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using LeanCloud.Storage.Internal;
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namespace LeanCloud.Storage.Internal {
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/// <summary>
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/// LeanCloud current config controller.
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/// </summary>
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internal class AVCurrentConfigController : IAVCurrentConfigController {
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private const string CurrentConfigKey = "CurrentConfig";
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private readonly TaskQueue taskQueue;
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private AVConfig currentConfig;
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private IStorageController storageController;
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/// <summary>
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/// Initializes a new instance of the <see cref="LeanCloud.Storage.Internal.AVCurrentConfigController"/> class.
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/// </summary>
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public AVCurrentConfigController(IStorageController storageController) {
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this.storageController = storageController;
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taskQueue = new TaskQueue();
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}
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public Task<AVConfig> GetCurrentConfigAsync() {
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return taskQueue.Enqueue(toAwait => toAwait.ContinueWith(_ => {
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if (currentConfig == null) {
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return storageController.LoadAsync().OnSuccess(t => {
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object tmp;
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t.Result.TryGetValue(CurrentConfigKey, out tmp);
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string propertiesString = tmp as string;
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if (propertiesString != null) {
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var dictionary = AVClient.DeserializeJsonString(propertiesString);
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currentConfig = new AVConfig(dictionary);
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} else {
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currentConfig = new AVConfig();
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}
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return currentConfig;
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});
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}
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return Task.FromResult(currentConfig);
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}), CancellationToken.None).Unwrap();
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}
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public Task SetCurrentConfigAsync(AVConfig config) {
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return taskQueue.Enqueue(toAwait => toAwait.ContinueWith(_ => {
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currentConfig = config;
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var jsonObject = ((IJsonConvertible)config).ToJSON();
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var jsonString = AVClient.SerializeJsonString(jsonObject);
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return storageController.LoadAsync().OnSuccess(t => t.Result.AddAsync(CurrentConfigKey, jsonString));
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}).Unwrap().Unwrap(), CancellationToken.None);
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}
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public Task ClearCurrentConfigAsync() {
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return taskQueue.Enqueue(toAwait => toAwait.ContinueWith(_ => {
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currentConfig = null;
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return storageController.LoadAsync().OnSuccess(t => t.Result.RemoveAsync(CurrentConfigKey));
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}).Unwrap().Unwrap(), CancellationToken.None);
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}
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public Task ClearCurrentConfigInMemoryAsync() {
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return taskQueue.Enqueue(toAwait => toAwait.ContinueWith(_ => {
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currentConfig = null;
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}), CancellationToken.None);
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}
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}
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}
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