this is my favorite style, though always a pain

reflect derived types, then instantiate. No registration, just derive :)
This commit is contained in:
Adam R Grey 2023-03-22 12:21:38 -04:00
parent b64edf8f8a
commit 72d6e1e254
5 changed files with 50 additions and 15 deletions

3
.vscode/launch.json vendored
View File

@ -15,7 +15,8 @@
"cwd": "${workspaceFolder}",
// For more information about the 'console' field, see https://aka.ms/VSCode-CS-LaunchJson-Console
"console": "internalConsole",
"stopAtEntry": false
"stopAtEntry": false,
"requireExactSource": true
},
{
"name": ".NET Core Attach",

View File

@ -7,7 +7,7 @@ namespace newsletter
public List<Reporter> Reporters { get; set; }
public class Reporter
{
public string Type { get; set; }
public string ReporterClass { get; set; }
public string Url { get; set; }
public string Username { get; set; }
public string Password { get; set; }

View File

@ -24,7 +24,7 @@ namespace newsletter
static async Task Main(string[] args)
{
var conf = Configure();
if(conf == null) return;
if (conf == null) return;
var reports = await CollectReports(CollectReporters(conf));
@ -35,14 +35,14 @@ namespace newsletter
static Configuration Configure(string configurationPath = "appsettings.json")
{
if(!File.Exists(configurationPath))
if (!File.Exists(configurationPath))
{
Console.Error.WriteLine($"could not find configuration at {configurationPath}! copying sample to that spot.");
File.Copy("sample-appsettings.json", configurationPath); //and you know what, if that explodes at the OS level, the OS should give you an error
return null;
}
var fileContents = File.ReadAllText(configurationPath);
if(string.IsNullOrWhiteSpace(fileContents))
if (string.IsNullOrWhiteSpace(fileContents))
{
Console.Error.WriteLine($"configuration file at {configurationPath} was empty! overwriting with sample settings.");
File.Copy("sample-appsettings.json", configurationPath, true);
@ -51,7 +51,7 @@ namespace newsletter
var conf = JsonConvert.DeserializeObject<Configuration>(fileContents);
if(conf == null)
if (conf == null)
{
Console.Error.WriteLine($"configuration file at {configurationPath} was empty! overwriting with sample settings.");
File.Copy("sample-appsettings.json", configurationPath, true);
@ -63,14 +63,47 @@ namespace newsletter
static List<Task<Report>> CollectReporters(Configuration conf)
{
//TODO
throw new NotImplementedException();
var toReturn = new List<Task<Report>>();
var reporterTypes = AppDomain.CurrentDomain.GetAssemblies()
.SelectMany(domainAssembly => domainAssembly.GetTypes())
.Where(type => type.IsSubclassOf(typeof(newsletter.Reporters.Reporter)) && !type.IsAbstract)
.ToList();
var skipPortionInName = "newsletter.Reporters.".Length;
foreach(var discoveredConfType in conf.Reporters.Select(r => r.ReporterClass))
{
Console.WriteLine($"{discoveredConfType} configuration type discovered");
}
foreach (var reporterType in reporterTypes)
{
Console.WriteLine($"{reporterType.ToString().Substring(skipPortionInName).ToLower()} reporter class discovered");
Func<Configuration.Reporter, bool> predicate = r => r.ReporterClass == reporterType.ToString().Substring(skipPortionInName).ToLower();
if (!conf.Reporters.Any(predicate))
{
Console.WriteLine($"no configurations for it");
}
else
{
var configurationsFor = conf.Reporters.Where(predicate);
Console.WriteLine($"{configurationsFor.Count()} configurations for it");
foreach (var confFor in configurationsFor)
{
var instance = (newsletter.Reporters.Reporter) Activator.CreateInstance(reporterType);
toReturn.Add(instance.Report(confFor));
}
}
}
return toReturn;
}
static async Task<List<Report>> CollectReports(List<Task<Report>> tasks)
static async Task<List<Report>> CollectReports(List<Task<Report>> tasks)
{
var results = new List<Report>();
foreach(var task in tasks)
foreach (var task in tasks)
{
var rep = await task;
results.Add(rep);
@ -81,6 +114,7 @@ namespace newsletter
static HtmlDocument AssembleHTML(IEnumerable<HtmlNode> reportSections)
{
//TODO
Console.WriteLine($"assembling {reportSections.Count()} sections");
throw new NotImplementedException();
}

View File

@ -6,7 +6,7 @@ namespace newsletter.Reporters
public class Dummy : Reporter
{
#pragma warning disable CS1998
public async Task<Report> Report(Configuration.Reporter config)
public override async Task<Report> Report(Configuration.Reporter config)
{
return new Report()
{

View File

@ -2,8 +2,8 @@ using System.Threading.Tasks;
namespace newsletter.Reporters
{
public interface Reporter
public abstract class Reporter
{
Task<Report> Report(Configuration.Reporter config);
public abstract Task<Report> Report(Configuration.Reporter config);
}
}