rss/testdata/example.go

47 lines
1.1 KiB
Go
Raw Normal View History

package main
/*
This is a minimal sample application, demonstrating how to set up an RSS feed
for regular polling of new channels/items.
Build & run with:
2014-11-16 16:07:39 +00:00
$ go run example.go
*/
import (
"fmt"
rss "github.com/jteeuwen/go-pkg-rss"
"os"
"time"
)
func main() {
// This sets up a new feed and polls it for new channels/items.
// Invoke it with 'go PollFeed(...)' to have the polling performed in a
// separate goroutine, so you can continue with the rest of your program.
PollFeed("http://blog.case.edu/news/feed.atom", 5)
}
func PollFeed(uri string, timeout int) {
feed := rss.New(timeout, true, chanHandler, itemHandler)
for {
if err := feed.Fetch(uri, nil); err != nil {
fmt.Fprintf(os.Stderr, "[e] %s: %s", uri, err)
return
}
<-time.After(time.Duration(feed.SecondsTillUpdate() * 1e9))
}
}
func chanHandler(feed *rss.Feed, newchannels []*rss.Channel) {
fmt.Printf("%d new channel(s) in %s\n", len(newchannels), feed.Url)
}
func itemHandler(feed *rss.Feed, ch *rss.Channel, newitems []*rss.Item) {
fmt.Printf("%d new item(s) in %s\n", len(newitems), feed.Url)
}