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using System;
using System.Collections.Generic;
using System.IO;
using System.Net;
using System.Net.Http;
using System.Threading.Tasks;
using Newtonsoft.Json;
namespace Microsoft.WebTools.Scaffolding.Core.Config
{
class ScaffoldingConfig
{
public static string ConfigPath { get; private set; } = Path.GetDirectoryName (typeof (ScaffoldingConfig).Assembly.Location);
public string Version { get; set; }
// LTS10, FTS11, NetStandard20, NetStandard21, and Net22 packages are set up as they are to maintain backwards compat.
// They were (are) explicitly named sections before the config file format was generalized to support arbitrary support policy versions.
public PackageDescription [] LTS10Packages { get; set; }
public PackageDescription [] FTS11Packages { get; set; }
public PackageDescription [] NetStandard20Packages { get; set; }
public PackageDescription [] NetStandard21Packages { get; set; }
public PackageDescription [] Net22Packages { get; set; }
// This is public so the Json deserialization works (and for testing).
// The data should be accessed via TryGetPackagesForSupportPolicyVersion
[JsonProperty]
public Dictionary<string, PackageDescription []> DynamicVersionedPackages { get; set; }
public bool TryGetPackagesForSupportPolicyVersion (SupportPolicyVersion supportPolicyVersion, out PackageDescription [] packageDescriptions)
{
if (supportPolicyVersion == null || supportPolicyVersion.Version == null) {
packageDescriptions = null;
return false;
}
if (supportPolicyVersion == SupportPolicyVersion.LTS10) {
packageDescriptions = LTS10Packages;
return true;
}
if (supportPolicyVersion == SupportPolicyVersion.FTS11) {
packageDescriptions = FTS11Packages;
return true;
}
if (supportPolicyVersion == SupportPolicyVersion.NetStandard20) {
packageDescriptions = NetStandard20Packages;
return true;
}
if (supportPolicyVersion == SupportPolicyVersion.NetStandard21) {
packageDescriptions = NetStandard21Packages;
return true;
}
if (supportPolicyVersion == SupportPolicyVersion.Net220) {
packageDescriptions = Net22Packages;
return true;
}
if (DynamicVersionedPackages != null && DynamicVersionedPackages.TryGetValue (supportPolicyVersion.Version.ToString (), out packageDescriptions)) {
return true;
}
packageDescriptions = null;
return false;
}
static ScaffoldingConfig fetchedConfig;
// This url will go live for 16.4
static string packageVersionsUrl = "https://webpifeed.blob.core.windows.net/webpifeed/partners/scaffoldingpackageversions_2108718.json";
public static async Task<ScaffoldingConfig> LoadFromJsonAsync ()
{
if(fetchedConfig == null) {
Stream stream;
using var httpClient = new HttpClient {
Timeout = TimeSpan.FromSeconds (2)
};
try {
stream = await httpClient.GetStreamAsync (packageVersionsUrl);
} catch {
// fallback to embedded resource
stream = typeof (ScaffoldingConfig).Assembly.GetManifestResourceStream ("ScaffoldingPackageVersions.json");
}
var serializer = new JsonSerializer ();
using var sr = new StreamReader (stream);
using var jsonTextReader = new JsonTextReader (sr);
return serializer.Deserialize<ScaffoldingConfig> (jsonTextReader);
}
return fetchedConfig;
}
}
}
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