From 28ec40458786c3b0f710d529780742b7c1e886a1 Mon Sep 17 00:00:00 2001
From: Kevin Leung <kevinresol@gmail.com>
Date: Wed, 12 Oct 2016 00:35:13 +0800
Subject: [PATCH] Python Container

---
 src/tink/http/containers/PythonContainer.hx | 120 ++++++++++++++++++++
 1 file changed, 120 insertions(+)
 create mode 100644 src/tink/http/containers/PythonContainer.hx

diff --git a/src/tink/http/containers/PythonContainer.hx b/src/tink/http/containers/PythonContainer.hx
new file mode 100644
index 0000000..fd864ef
--- /dev/null
+++ b/src/tink/http/containers/PythonContainer.hx
@@ -0,0 +1,120 @@
+package tink.http.containers;
+
+import python.*;
+import python.Tuple;
+import haxe.io.Bytes;
+import tink.http.Container;
+import tink.http.Request;
+import tink.http.Response;
+import tink.http.Header;
+import tink.io.IdealSource;
+import tink.url.Host;
+
+using tink.CoreApi;
+
+class PythonContainer implements Container {
+  
+  var host:Host;
+  
+  public function new(host:Host) {
+    this.host = host;
+    trace(ThreadingMixIn, HTTPServer); // HACK: make sure they got imported
+  }
+  
+  public function run(handler:Handler) {
+    var server = new PythonServer(Tuple2.make(host.name, host.port), PythonHandler, handler);
+    #if (tink_concurrent && concurrent)
+      new tink.concurrent.Thread(server.start); // TODO: use runloop maybe?
+    #else
+      server.start(); // This will block
+    #end
+    var failures = Signal.trigger();
+    return Future.sync(Running({ 
+      shutdown: function (hard:Bool) {
+        server.stop();
+        return Future.sync(Noise);
+      },
+      failures: failures, //TODO: these need to be triggered
+    }));
+  }
+}
+
+class PythonHandler extends BaseHTTPRequestHandler {
+  public function do_GET() doRequest();
+  public function do_POST() doRequest();
+  public function do_PUT() doRequest();
+  public function do_PATCH() doRequest();
+  public function do_DELETE() doRequest();
+  public function do_HEAD() doRequest();
+  public function do_OPTIONS() doRequest();
+  
+  function doRequest() {
+    var contentLength = 0;
+    var headerFields = [];
+    for(i in headers.items()) {
+      var name = i._1;
+      var value = i._2;
+      headerFields.push(new HeaderField(name, value));
+      if(name.toLowerCase() == 'content-length') contentLength = Std.parseInt(value);
+    }
+    server.handler.process(new IncomingRequest(
+      address_string(),
+      new IncomingRequestHeader(cast command, requestline, request_version, headerFields),
+      Plain(Bytes.ofData(rfile.read(contentLength)))
+    )).handle(function(res) {
+      send_response(res.header.statusCode, res.header.reason);
+      for(f in res.header.fields) send_header(f.name, f.value);
+      end_headers();
+      res.body.all().handle(function(bytes) wfile.write(bytes.getData()));
+    });
+  }
+}
+
+class PythonServer extends ThreadingSimpleServer {
+  public var handler:Handler;
+  var stopped = false;
+  public function new(host:Tuple2<String, Int>, handlerClass:Class<BaseHTTPRequestHandler>, handler:Handler) {
+    super(host, handlerClass);
+    this.handler = handler;
+  }
+  public function start() {
+    while(true) if(stopped) break else handle_request(); // TODO: this will handle one more request after stopped, beucase handle_request is blocking
+  }
+  public function stop() {
+    stopped = true;
+  }
+}
+
+@:native('tink_http_containers_ThreadingMixIn, tink_http_containers_HTTPServer') // HACK: for multiple inheritance
+extern class ThreadingSimpleServer {
+  function new(host:Tuple2<String, Int>, handlerClass:Class<BaseHTTPRequestHandler>);
+  function handle_request():Void;
+}
+
+@:pythonImport('socketserver', 'ThreadingMixIn')
+extern class ThreadingMixIn {}
+
+@:pythonImport('http.server', 'HTTPServer')
+extern class HTTPServer {}
+
+@:pythonImport('http.server', 'BaseHTTPRequestHandler')
+extern class BaseHTTPRequestHandler {
+  var server:PythonServer; // HACK
+  var requestline:String;
+  var command:String;
+  var request_version:String;
+  var headers:HTTPMessage;
+  var rfile:python.lib.io.RawIOBase;
+  var wfile:python.lib.io.RawIOBase;
+  
+  function address_string():String;
+  function send_response(code:Int, ?message:String):Void;
+  function send_header(name:String, value:String):Void;
+  function end_headers():Void;
+}
+
+@:pythonImport('http.client', 'HTTPMessage')
+extern class HTTPMessage {
+  function getheader(name:String):String;
+  function items():Array<Tuple2<String, String>>;
+}
\ No newline at end of file