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| 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
| 2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
| 3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
| 4 | 4 |
| 5 library chat_server; | 5 library chat_server; |
| 6 import 'dart:async'; |
| 6 import 'dart:io'; | 7 import 'dart:io'; |
| 7 import 'dart:isolate'; | 8 import 'dart:isolate'; |
| 8 import 'dart:json'; | 9 import 'dart:json' as json; |
| 9 import 'dart:math'; | 10 import 'dart:math'; |
| 10 | 11 |
| 11 void startChatServer() { | 12 void startChatServer() { |
| 12 var server = new ChatServer(); | 13 var server = new ChatServer(); |
| 13 server.init(); | 14 server.init(); |
| 14 port.receive(server.dispatch); | 15 port.receive(server.dispatch); |
| 15 } | 16 } |
| 16 | 17 |
| 17 class ChatServer extends IsolatedServer { | 18 class ChatServer extends IsolatedServer { |
| 18 } | 19 } |
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| 301 static const String notFoundPageHtml = """ | 302 static const String notFoundPageHtml = """ |
| 302 <html><head> | 303 <html><head> |
| 303 <title>404 Not Found</title> | 304 <title>404 Not Found</title> |
| 304 </head><body> | 305 </head><body> |
| 305 <h1>Not Found</h1> | 306 <h1>Not Found</h1> |
| 306 <p>The requested URL was not found on this server.</p> | 307 <p>The requested URL was not found on this server.</p> |
| 307 </body></html>"""; | 308 </body></html>"""; |
| 308 | 309 |
| 309 void _sendJSONResponse(HttpResponse response, Map responseData) { | 310 void _sendJSONResponse(HttpResponse response, Map responseData) { |
| 310 response.headers.set("Content-Type", "application/json; charset=UTF-8"); | 311 response.headers.set("Content-Type", "application/json; charset=UTF-8"); |
| 311 response.outputStream.writeString(JSON.stringify(responseData)); | 312 response.outputStream.writeString(json.stringify(responseData)); |
| 312 response.outputStream.close(); | 313 response.outputStream.close(); |
| 313 } | 314 } |
| 314 | 315 |
| 315 void redirectPageHandler(HttpRequest request, | 316 void redirectPageHandler(HttpRequest request, |
| 316 HttpResponse response, | 317 HttpResponse response, |
| 317 String redirectPath) { | 318 String redirectPath) { |
| 318 if (_redirectPage == null) { | 319 if (_redirectPage == null) { |
| 319 _redirectPage = redirectPageHtml.charCodes; | 320 _redirectPage = redirectPageHtml.charCodes; |
| 320 } | 321 } |
| 321 response.statusCode = HttpStatus.FOUND; | 322 response.statusCode = HttpStatus.FOUND; |
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| 379 // Join request: | 380 // Join request: |
| 380 // { "request": "join", | 381 // { "request": "join", |
| 381 // "handle": <handle> } | 382 // "handle": <handle> } |
| 382 void _joinHandler(HttpRequest request, HttpResponse response) { | 383 void _joinHandler(HttpRequest request, HttpResponse response) { |
| 383 StringBuffer body = new StringBuffer(); | 384 StringBuffer body = new StringBuffer(); |
| 384 StringInputStream input = new StringInputStream(request.inputStream); | 385 StringInputStream input = new StringInputStream(request.inputStream); |
| 385 input.onData = () => body.add(input.read()); | 386 input.onData = () => body.add(input.read()); |
| 386 input.onClosed = () { | 387 input.onClosed = () { |
| 387 String data = body.toString(); | 388 String data = body.toString(); |
| 388 if (data != null) { | 389 if (data != null) { |
| 389 var requestData = JSON.parse(data); | 390 var requestData = json.parse(data); |
| 390 if (requestData["request"] == "join") { | 391 if (requestData["request"] == "join") { |
| 391 String handle = requestData["handle"]; | 392 String handle = requestData["handle"]; |
| 392 if (handle != null) { | 393 if (handle != null) { |
| 393 // New user joining. | 394 // New user joining. |
| 394 User user = _topic._userJoined(handle); | 395 User user = _topic._userJoined(handle); |
| 395 | 396 |
| 396 // Send response. | 397 // Send response. |
| 397 Map responseData = new Map(); | 398 Map responseData = new Map(); |
| 398 responseData["response"] = "join"; | 399 responseData["response"] = "join"; |
| 399 responseData["sessionId"] = user.sessionId; | 400 responseData["sessionId"] = user.sessionId; |
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| 412 | 413 |
| 413 // Leave request: | 414 // Leave request: |
| 414 // { "request": "leave", | 415 // { "request": "leave", |
| 415 // "sessionId": <sessionId> } | 416 // "sessionId": <sessionId> } |
| 416 void _leaveHandler(HttpRequest request, HttpResponse response) { | 417 void _leaveHandler(HttpRequest request, HttpResponse response) { |
| 417 StringBuffer body = new StringBuffer(); | 418 StringBuffer body = new StringBuffer(); |
| 418 StringInputStream input = new StringInputStream(request.inputStream); | 419 StringInputStream input = new StringInputStream(request.inputStream); |
| 419 input.onData = () => body.add(input.read()); | 420 input.onData = () => body.add(input.read()); |
| 420 input.onClosed = () { | 421 input.onClosed = () { |
| 421 String data = body.toString(); | 422 String data = body.toString(); |
| 422 var requestData = JSON.parse(data); | 423 var requestData = json.parse(data); |
| 423 if (requestData["request"] == "leave") { | 424 if (requestData["request"] == "leave") { |
| 424 String sessionId = requestData["sessionId"]; | 425 String sessionId = requestData["sessionId"]; |
| 425 if (sessionId != null) { | 426 if (sessionId != null) { |
| 426 // User leaving. | 427 // User leaving. |
| 427 _topic._userLeft(sessionId); | 428 _topic._userLeft(sessionId); |
| 428 | 429 |
| 429 // Send response. | 430 // Send response. |
| 430 Map responseData = new Map(); | 431 Map responseData = new Map(); |
| 431 responseData["response"] = "leave"; | 432 responseData["response"] = "leave"; |
| 432 _sendJSONResponse(response, responseData); | 433 _sendJSONResponse(response, responseData); |
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| 444 // "sessionId": <sessionId>, | 445 // "sessionId": <sessionId>, |
| 445 // "message": <message> } | 446 // "message": <message> } |
| 446 void _messageHandler(HttpRequest request, HttpResponse response) { | 447 void _messageHandler(HttpRequest request, HttpResponse response) { |
| 447 StringBuffer body = new StringBuffer(); | 448 StringBuffer body = new StringBuffer(); |
| 448 StringInputStream input = new StringInputStream(request.inputStream); | 449 StringInputStream input = new StringInputStream(request.inputStream); |
| 449 input.onData = () => body.add(input.read()); | 450 input.onData = () => body.add(input.read()); |
| 450 input.onClosed = () { | 451 input.onClosed = () { |
| 451 String data = body.toString(); | 452 String data = body.toString(); |
| 452 _messageCount++; | 453 _messageCount++; |
| 453 _messageRate.record(1); | 454 _messageRate.record(1); |
| 454 var requestData = JSON.parse(data); | 455 var requestData = json.parse(data); |
| 455 if (requestData["request"] == "message") { | 456 if (requestData["request"] == "message") { |
| 456 String sessionId = requestData["sessionId"]; | 457 String sessionId = requestData["sessionId"]; |
| 457 if (sessionId != null) { | 458 if (sessionId != null) { |
| 458 // New message from user. | 459 // New message from user. |
| 459 bool success = _topic._userMessage(requestData); | 460 bool success = _topic._userMessage(requestData); |
| 460 | 461 |
| 461 // Send response. | 462 // Send response. |
| 462 if (success) { | 463 if (success) { |
| 463 Map responseData = new Map(); | 464 Map responseData = new Map(); |
| 464 responseData["response"] = "message"; | 465 responseData["response"] = "message"; |
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| 479 // { "request": "receive", | 480 // { "request": "receive", |
| 480 // "sessionId": <sessionId>, | 481 // "sessionId": <sessionId>, |
| 481 // "nextMessage": <nextMessage>, | 482 // "nextMessage": <nextMessage>, |
| 482 // "maxMessages": <maxMesssages> } | 483 // "maxMessages": <maxMesssages> } |
| 483 void _receiveHandler(HttpRequest request, HttpResponse response) { | 484 void _receiveHandler(HttpRequest request, HttpResponse response) { |
| 484 StringBuffer body = new StringBuffer(); | 485 StringBuffer body = new StringBuffer(); |
| 485 StringInputStream input = new StringInputStream(request.inputStream); | 486 StringInputStream input = new StringInputStream(request.inputStream); |
| 486 input.onData = () => body.add(input.read()); | 487 input.onData = () => body.add(input.read()); |
| 487 input.onClosed = () { | 488 input.onClosed = () { |
| 488 String data = body.toString(); | 489 String data = body.toString(); |
| 489 var requestData = JSON.parse(data); | 490 var requestData = json.parse(data); |
| 490 if (requestData["request"] == "receive") { | 491 if (requestData["request"] == "receive") { |
| 491 String sessionId = requestData["sessionId"]; | 492 String sessionId = requestData["sessionId"]; |
| 492 int nextMessage = requestData["nextMessage"]; | 493 int nextMessage = requestData["nextMessage"]; |
| 493 int maxMessages = requestData["maxMessages"]; | 494 int maxMessages = requestData["maxMessages"]; |
| 494 if (sessionId != null && nextMessage != null) { | 495 if (sessionId != null && nextMessage != null) { |
| 495 | 496 |
| 496 void sendResponse(messages) { | 497 void sendResponse(messages) { |
| 497 // Send response. | 498 // Send response. |
| 498 Map responseData = new Map(); | 499 Map responseData = new Map(); |
| 499 responseData["response"] = "receive"; | 500 responseData["response"] = "receive"; |
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| 631 // range is split over a number of buckets where each bucket collects | 632 // range is split over a number of buckets where each bucket collects |
| 632 // the number of events happening in that time sub-range. The first | 633 // the number of events happening in that time sub-range. The first |
| 633 // constructor arument specifies the time range in milliseconds. The | 634 // constructor arument specifies the time range in milliseconds. The |
| 634 // buckets are in the list _buckets organized at a circular buffer | 635 // buckets are in the list _buckets organized at a circular buffer |
| 635 // with _currentBucket marking the bucket where an event was last | 636 // with _currentBucket marking the bucket where an event was last |
| 636 // recorded. A current sum of the content of all buckets except the | 637 // recorded. A current sum of the content of all buckets except the |
| 637 // one pointed a by _currentBucket is kept in _sum. | 638 // one pointed a by _currentBucket is kept in _sum. |
| 638 class Rate { | 639 class Rate { |
| 639 Rate([int timeRange = 1000, int buckets = 10]) | 640 Rate([int timeRange = 1000, int buckets = 10]) |
| 640 : _timeRange = timeRange, | 641 : _timeRange = timeRange, |
| 641 _buckets = new List(buckets + 1), // Current bucket is not in the sum. | 642 _buckets = new List.fixedLength(buckets + 1), // Current bucket is not
in the sum. |
| 642 _currentBucket = 0, | 643 _currentBucket = 0, |
| 643 _currentBucketTime = new Date.now().millisecondsSinceEpoch, | 644 _currentBucketTime = new Date.now().millisecondsSinceEpoch, |
| 644 _sum = 0 { | 645 _sum = 0 { |
| 645 _bucketTimeRange = (_timeRange / buckets).toInt(); | 646 _bucketTimeRange = (_timeRange / buckets).toInt(); |
| 646 for (int i = 0; i < _buckets.length; i++) { | 647 for (int i = 0; i < _buckets.length; i++) { |
| 647 _buckets[i] = 0; | 648 _buckets[i] = 0; |
| 648 } | 649 } |
| 649 } | 650 } |
| 650 | 651 |
| 651 // Record the specified number of events. | 652 // Record the specified number of events. |
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| 684 } | 685 } |
| 685 } | 686 } |
| 686 | 687 |
| 687 int _timeRange; | 688 int _timeRange; |
| 688 List<int> _buckets; | 689 List<int> _buckets; |
| 689 int _currentBucket; | 690 int _currentBucket; |
| 690 int _currentBucketTime; | 691 int _currentBucketTime; |
| 691 num _bucketTimeRange; | 692 num _bucketTimeRange; |
| 692 int _sum; | 693 int _sum; |
| 693 } | 694 } |
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Chromium Code Reviews
Issue 11783009:
Big merge from experimental to bleeding edge. (Closed)
Base URL: https://dart.googlecode.com/svn/branches/bleeding_edge/dart