def connect_radiovis(self, host, port, station, use_proxy_server):
"""
Establish a RadioVIS Stomp connection at the specified host and port,
and optionally route the connection through the proxy server.
"""
# Dispose of the old RadioVisClient object.
if self._radiovis_client is not None:
self._radiovis_client.stop()
self._radiovis_client.remove_listener(self)
self._radiovis_client = None
if use_proxy_server:
proxy_settings = self._proxy_settings
else:
proxy_settings = None
self._radiovis_client = RadioVisClient(host, port, proxy_settings)
self._radiovis_client.add_listener(self)
self._radiovis_client.start(text_topic=station.get_text_topic(),
image_topic=station.get_image_topic())
def connect_radiovis(self, host, port, station, use_proxy_server):
"""
Establish a RadioVIS Stomp connection at the specified host and port,
and optionally route the connection through the proxy server.
"""
# Dispose of the old RadioVisClient object.
if self._radiovis_client is not None:
self._radiovis_client.stop()
self._radiovis_client.remove_listener(self)
self._radiovis_client = None
if use_proxy_server:
proxy_settings = self._proxy_settings
else:
proxy_settings = None
self._radiovis_client = RadioVisClient(host, port, proxy_settings)
self._radiovis_client.add_listener(self)
self._radiovis_client.start(text_topic = station.get_text_topic(),
image_topic = station.get_image_topic())
class ConnectionManager(object):
"""
Manages the RadioVIS (Stomp) connection and HTTP connection for retrieving
images.
"""
def __init__(self, radiodns_services):
self._radiodns_services = radiodns_services
self._dns = DnsResolver()
self._proxy_settings = None
self._use_http_proxy = False
self._radiovis_client = None
self._http_client = HttpClientThread(self)
self._http_client.start()
self._listeners = []
# Get system proxy server settings (from http_proxy environment variable
# or web browser settings).
proxies = urllib.getproxies()
if "http" in proxies:
http_proxy = urlparse.urlparse(proxies['http'])
self._proxy_settings = ProxySettings(
proxy_type=socks.PROXY_TYPE_HTTP,
host=http_proxy.hostname,
port=http_proxy.port)
self.log("HTTP proxy: " + http_proxy.hostname + ", port " +
str(http_proxy.port))
else:
self._proxy_settings = None
def shutdown(self):
if self._radiovis_client is not None:
self._radiovis_client.stop()
self._radiovis_client.remove_listener(self)
self._http_client.stop()
def add_listener(self, listener):
self._listeners.append(listener)
def remove_listener(self, listener):
self._listeners.remove(listener)
def get_cname(self, station):
"""
Return the CNAME DNS record for the given radio station.
"""
host = station.get_hostname()
return self._dns.get_cname(host)
def get_services(self, cname):
"""
Return a list of the RadioDNS services available on the cname domain.
Each entry in the list is a ServiceRecord object.
"""
services = []
for service in self._radiodns_services:
dns_services = self._dns.get_services(service.get_record(), cname,
service.get_name())
services.extend(dns_services)
return services
def enable_http_proxy(self, enable):
self._use_http_proxy = enable
def connect_radiovis(self, host, port, station, use_proxy_server):
"""
Establish a RadioVIS Stomp connection at the specified host and port,
and optionally route the connection through the proxy server.
"""
# Dispose of the old RadioVisClient object.
if self._radiovis_client is not None:
self._radiovis_client.stop()
self._radiovis_client.remove_listener(self)
self._radiovis_client = None
if use_proxy_server:
proxy_settings = self._proxy_settings
else:
proxy_settings = None
self._radiovis_client = RadioVisClient(host, port, proxy_settings)
self._radiovis_client.add_listener(self)
self._radiovis_client.start(text_topic=station.get_text_topic(),
image_topic=station.get_image_topic())
def stomp_message(self, message):
for listener in self._listeners:
listener.stomp_message(message)
def radiovis_text(self, text):
"""
Called from RadioVisClient object when a TEXT message is received.
"""
for listener in self._listeners:
listener.radiovis_text(text)
def radiovis_show(self, image_url, link_url, date_time):
"""
Called from RadioVisClient object when a SHOW message is received.
"""
for listener in self._listeners:
listener.radiovis_show(image_url, link_url, date_time)
if image_url is not None:
self._request_image(image_url)
def _request_image(self, url):
proxy_settings = None
if self._use_http_proxy:
proxy_settings = self._proxy_settings
self._http_client.request(url, proxy_settings)
def http_received_data(self, data):
"""
Called from HttpClientThread object when a file has been downloaded
over HTTP.
"""
if data is not None:
for listener in self._listeners:
listener.radiovis_image(data)
def log(self, message):
logging.info(message)
class ConnectionManager(object):
"""
Manages the RadioVIS (Stomp) connection and HTTP connection for retrieving
images.
"""
def __init__(self, radiodns_services):
self._radiodns_services = radiodns_services
self._dns = DnsResolver()
self._proxy_settings = None
self._use_http_proxy = False
self._radiovis_client = None
self._http_client = HttpClientThread(self)
self._http_client.start()
self._listeners = []
# Get system proxy server settings (from http_proxy environment variable
# or web browser settings).
proxies = urllib.getproxies()
if "http" in proxies:
http_proxy = urlparse.urlparse(proxies['http'])
self._proxy_settings = ProxySettings(proxy_type = socks.PROXY_TYPE_HTTP,
host = http_proxy.hostname,
port = http_proxy.port)
self.log("HTTP proxy: " + http_proxy.hostname +
", port " + str(http_proxy.port))
else:
self._proxy_settings = None
def shutdown(self):
if self._radiovis_client is not None:
self._radiovis_client.stop()
self._radiovis_client.remove_listener(self)
self._http_client.stop()
def add_listener(self, listener):
self._listeners.append(listener)
def remove_listener(self, listener):
self._listeners.remove(listener)
def get_cname(self, station):
"""
Return the CNAME DNS record for the given radio station.
"""
host = station.get_hostname()
return self._dns.get_cname(host)
def get_services(self, cname):
"""
Return a list of the RadioDNS services available on the cname domain.
Each entry in the list is a ServiceRecord object.
"""
services = []
for service in self._radiodns_services:
dns_services = self._dns.get_services(service.get_record(),
cname,
service.get_name())
services.extend(dns_services)
return services
def enable_http_proxy(self, enable):
self._use_http_proxy = enable
def connect_radiovis(self, host, port, station, use_proxy_server):
"""
Establish a RadioVIS Stomp connection at the specified host and port,
and optionally route the connection through the proxy server.
"""
# Dispose of the old RadioVisClient object.
if self._radiovis_client is not None:
self._radiovis_client.stop()
self._radiovis_client.remove_listener(self)
self._radiovis_client = None
if use_proxy_server:
proxy_settings = self._proxy_settings
else:
proxy_settings = None
self._radiovis_client = RadioVisClient(host, port, proxy_settings)
self._radiovis_client.add_listener(self)
self._radiovis_client.start(text_topic = station.get_text_topic(),
image_topic = station.get_image_topic())
def stomp_message(self, message):
for listener in self._listeners:
listener.stomp_message(message)
def radiovis_text(self, text):
"""
Called from RadioVisClient object when a TEXT message is received.
"""
for listener in self._listeners:
listener.radiovis_text(text)
def radiovis_show(self, image_url, link_url, date_time):
"""
Called from RadioVisClient object when a SHOW message is received.
"""
for listener in self._listeners:
listener.radiovis_show(image_url, link_url, date_time)
if image_url is not None:
self._request_image(image_url)
def _request_image(self, url):
proxy_settings = None
if self._use_http_proxy:
proxy_settings = self._proxy_settings
self._http_client.request(url, proxy_settings)
def http_received_data(self, data):
"""
Called from HttpClientThread object when a file has been downloaded
over HTTP.
"""
if data is not None:
for listener in self._listeners:
listener.radiovis_image(data)
def log(self, message):
logging.info(message)