# For any subscriber, you can define any number of functions
# that will get called with the sent value when a message arrives.
# Here's a simple example of a function that recieves a value.
def example(value):
print "Got",value,type(value)
# We call "subscribe" to associate a function with a subscriber.
brew2.subscribe("sub1",example)
brew2.subscribe("sub2",example)
brew2.subscribe("sub3",example)
# Calling start on a brew starts it running in a separate thread.
brew1.start()
brew2.start()
# We'll publish a value every three seconds. While this is running,
# go to your admin interface and connect the subscriber to the publisher
# to see the values.
try:
while True:
time.sleep(3)
# The publish method sends a value from the specified
# publisher.
brew1.publish('pub','rub')
except (KeyboardInterrupt, SystemExit) as e:
# Calling stop on a brew disconnects it and waits for its
# associated thread to finish.
brew1.stop()
brew2.stop()
while 1:
for base_url in base_urls:
print "scraping %s" % base_url
doc = parse(base_url).getroot()
links = doc.cssselect('span.pl a')
if links:
for link in links:
subdoc_url = link.get('href')
subdoc = parse(subdoc_url).getroot()
images = subdoc.cssselect('img#iwi')
print "\t%s %d images" % (subdoc_url, len(images))
for image in images:
img_url = image.get('src')
if img_url not in images:
print "\t\t%s" % (img_url)
brew.publish('image', img_url)
history.append( img_url )
else:
print "No links found on "+base_url
print 'Sent %d images' % len(history)
time.sleep(2.5)
# Catch ctrl+c
except (KeyboardInterrupt, SystemExit):
print("Exiting!")
# closing out the app and returning terminal to old settings
finally:
print("Stopping spacebrew");
brew.stop()
try:
print ("Starting spacebrew")
brew.start()
base_urls = [
"http://newyork.craigslist.org/cas/",
"http://philadelphia.craigslist.org/cas/",
"http://sfbay.craigslist.org/cas/",
]
links = []
while 1:
for base_url in base_urls:
print "scraping %s" % base_url
doc = parse(base_url).getroot()
for link in doc.cssselect("p.row a"):
if link.get("href") not in links:
brew.publish("tick", link.text_content())
links.append(link.get("href"))
print "%s: %s" % (len(links), link.get("href"))
time.sleep(2.5)
# Catch ctrl+c
except (KeyboardInterrupt, SystemExit):
print ("Exiting!")
# closing out the app and returning terminal to old settings
finally:
print ("Stopping spacebrew")
brew.stop()
