I have 2 tiny node services:
1. screenshot service
(https://github.com/fzaninotto/screenshot-as-a-service) - get's url and can
stream back a snapshop of it.
2. image updater - calls the screenshot service every few minutes with 5
urls.
Here is the code for the image updater.
require('http');
var url = require('url');
var fs = require('fs');
var environment = process.env.NODE_ENV || 'development';
var config = require('./config/' + environment + '.js');
var interval = config.interval * 1000 * 60; //we want minutes
function createImages(){
console.log(new Date().toUTCString(), ' - creating images');
for (name in config.urls) {
var options = url.parse(config.screenshotServiceUrl +
config.urls[name]);
createImage(name, options);
};
}
// get request to our screenshot service and creating an image file
function createImage(name, options) {
http.get(options, function(res) {
var stream = fs.createWriteStream(config.imagesPath + name + '.png');
res.on('data', function (chunk) {
stream.write(chunk);
});
res.on('end', function (chunk) {
stream.end();
});
});
};
createImages();
// every 5 minutes
setInterval(function() {
createImages();
}, interval);
After a few hours (maybe days sometimes) of running them, I have one out of
the following 2 issues -
1. The image updater crashes with this message: 'Error: socket hang up'.
2. The machine is getting slow since there are multiple instances of
phantomjs, the tool used by the screenshot service. I have to manualy kill
them (ps aux|grep phantomjs | awk '{print $2}' xargs kill -9).
my node version - 0.6.14
google for the first issue led me to this discussion -
https://groups.google.com/forum/#!topic/nodejs/kYnfJZeqGZ4 but it seems to
be an old version of node.
Any tips and ideas ore welcome!
--
Job Board: http://jobs.nodejs.org/
Posting guidelines:
https://github.com/joyent/node/wiki/Mailing-List-Posting-Guidelines
You received this message because you are subscribed to the Google
Groups "nodejs" group.
To post to this group, send email to [email protected]
To unsubscribe from this group, send email to
[email protected]
For more options, visit this group at
http://groups.google.com/group/nodejs?hl=en?hl=en
