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add some caching for static assets

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This commit is contained in:
Jakob Ketterl 2019-05-09 16:12:05 +02:00
parent 56dcd00e82
commit 80d387743a
1 changed files with 23 additions and 8 deletions
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31
owrx/controllers.py
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@ -3,15 +3,21 @@ from owrx.websocket import WebSocketConnection
from owrx.config import PropertyManager
from owrx.source import SpectrumThread, DspManager, CpuUsageThread
import json
import os
from datetime import datetime
class Controller(object):
def __init__(self, handler, matches):
self.handler = handler
self.matches = matches
def send_response(self, content, code = 200, content_type = "text/html"):
def send_response(self, content, code = 200, content_type = "text/html", last_modified: datetime = None, max_age = None):
self.handler.send_response(code)
if content_type is not None:
self.handler.send_header("Content-Type", content_type)
if last_modified is not None:
self.handler.send_header("Last-Modified", last_modified.strftime("%a, %d %b %Y %H:%M:%S GMT"))
if max_age is not None:
self.handler.send_header("Cache-Control", "max-age: {0}".format(max_age))
self.handler.end_headers()
if (type(content) == str):
content = content.encode()
@ -27,25 +33,34 @@ class StatusController(Controller):
def handle_request(self):
self.send_response("you have reached the status page!")
class IndexController(Controller):
def handle_request(self):
self.render_template("index.wrx")
class AssetsController(Controller):
def serve_file(self, file):
def serve_file(self, file, content_type = None):
try:
modified = datetime.fromtimestamp(os.path.getmtime('htdocs/' + file))
if "If-Modified-Since" in self.handler.headers:
client_modified = datetime.strptime(self.handler.headers["If-Modified-Since"], "%a, %d %b %Y %H:%M:%S %Z")
if modified <= client_modified:
self.send_response("", code = 304)
return
f = open('htdocs/' + file, 'rb')
data = f.read()
f.close()
(content_type, encoding) = mimetypes.MimeTypes().guess_type(file)
self.send_response(data, content_type = content_type)
if content_type is None:
(content_type, encoding) = mimetypes.MimeTypes().guess_type(file)
self.send_response(data, content_type = content_type, last_modified = modified, max_age = 3600)
except FileNotFoundError:
self.send_response("file not found", code = 404)
def handle_request(self):
filename = self.matches.group(1)
self.serve_file(filename)
class IndexController(AssetsController):
def handle_request(self):
self.serve_file("index.wrx", "text/html")
class OpenWebRxClient(object):
def __init__(self, conn):
self.conn = conn