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April 18, 2014 07:07
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async and sync method in twisted
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| import time | |
| from twisted.web.server import Site | |
| from twisted.web.resource import Resource | |
| from twisted.internet import reactor | |
| from twisted.web import server | |
| from twisted.internet.protocol import ProcessProtocol | |
| from twisted.internet.defer import Deferred | |
| from calendar import calendar | |
| class MyProcessProtocol(ProcessProtocol): | |
| data = "" | |
| def connectionMade(self): | |
| self.d = Deferred() | |
| def outReceived(self, data): | |
| self.data += data | |
| def processEnded(self, reason): | |
| self.d.callback(self.data) | |
| class Async(Resource): | |
| isLeaf = True | |
| def render_GET(self, request): | |
| def _on_end(data, begin, request): | |
| end = time.time() | |
| request.write(data) | |
| request.write(str((begin, end, end-begin))) | |
| request.finish() | |
| pp = MyProcessProtocol() | |
| begin = time.time() | |
| reactor.spawnProcess(pp, "sh", ["sh", "-c", "/sbin/ping -c 11 baidu.com"]) | |
| pp.d.addBoth(_on_end, begin, request) | |
| return server.NOT_DONE_YET | |
| class Sync(Resource): | |
| isLeaf = True | |
| def render_GET(self, request): | |
| time.sleep(10) | |
| end = time.time() | |
| return str(end) | |
| class YearPage(Resource): | |
| def __init__(self, year): | |
| Resource.__init__(self) | |
| self.year = year | |
| def render_GET(self, request): | |
| return "<html><body><pre>%s</pre></body></html>" % (calendar(self.year),) | |
| class Calendar(Resource): | |
| def getChild(self, name, request): | |
| if name == "async": | |
| return Async() | |
| if name == "sync": | |
| return Sync() | |
| if name.isdigit(): | |
| return YearPage(int(name)) | |
| root = Calendar() | |
| factory = Site(root) | |
| reactor.listenTCP(8880, factory) | |
| reactor.run() |
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