mirror of https://github.com/dapr/quickstarts.git
95 lines
3.0 KiB
C#
95 lines
3.0 KiB
C#
using Newtonsoft.Json;
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using Newtonsoft.Json.Linq;
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var builder = WebApplication.CreateBuilder(args);
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var app = builder.Build();
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var baseURL = (Environment.GetEnvironmentVariable("BASE_URL") ?? "http://localhost") + ":"
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+ (Environment.GetEnvironmentVariable("DAPR_HTTP_PORT") ?? "3500");
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const string DAPR_CONFIGURATION_STORE = "configstore";
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var CONFIGURATION_ITEMS = new List<string> { "orderId1", "orderId2" };
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var httpClient = new HttpClient();
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httpClient.DefaultRequestHeaders.Accept.Add(new System.Net.Http.Headers.MediaTypeWithQualityHeaderValue("application/json"));
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foreach (var item in CONFIGURATION_ITEMS)
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{
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// Get config items from the config store
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try
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{
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var response = await httpClient.GetStringAsync($"{baseURL}/v1.0/configuration/{DAPR_CONFIGURATION_STORE}?key={item.ToString()}");
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Console.WriteLine("Configuration for " + item + ": " + response);
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}
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catch (Exception ex)
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{
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Console.WriteLine("Could not get config item, err:" + ex.Message);
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Environment.Exit(1);
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}
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}
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async Task<string> subscribeToConfigUpdates()
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{
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// Add delay to allow app channel to be ready
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Thread.Sleep(3000);
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try
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{
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var subscription = await httpClient.GetStringAsync($"{baseURL}/v1.0/configuration/{DAPR_CONFIGURATION_STORE}/subscribe");
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if (subscription.Contains("errorCode"))
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{
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Console.WriteLine("Error subscribing to config updates, err:" + subscription);
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Environment.Exit(1);
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return string.Empty;
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}
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dynamic data = JObject.Parse(subscription);
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Console.WriteLine("App subscribed to config changes with subscription id: " + data.id);
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return data.id;
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}
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catch (Exception ex)
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{
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Console.WriteLine("Error subscribing to config updates, err:" + ex.Message);
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Environment.Exit(1);
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return string.Empty;
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}
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}
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async Task readConfigurationChanges()
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{
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// Create POST endpoint to receive config updates
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app.MapPost("/configuration/configstore/{item}", async (HttpRequest request) =>
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{
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using var sr = new StreamReader(request.Body);
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var config = await sr.ReadToEndAsync();
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dynamic update = JObject.Parse(config);
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Console.WriteLine("Configuration update " + update.items.ToString(Formatting.None));
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});
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await app.StartAsync();
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}
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await readConfigurationChanges();
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string subscriptionId = await subscribeToConfigUpdates();
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// Unsubscribe to config updates and exit app after 20 seconds
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await Task.Delay(20000);
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try
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{
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string unsubscribe = await httpClient.GetStringAsync($"{baseURL}/v1.0/configuration/{DAPR_CONFIGURATION_STORE}/{subscriptionId}/unsubscribe");
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if (unsubscribe.Contains("true"))
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{
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Console.WriteLine("App unsubscribed from config updates");
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Environment.Exit(0);
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}
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else
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{
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Console.WriteLine("Error unsubscribing from config updates, err:" + unsubscribe);
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Environment.Exit(1);
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}
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}
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catch (Exception ex)
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{
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Console.WriteLine("Error unsubscribing from config updates, err:" + ex.Message);
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Environment.Exit(1);
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}
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