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Gist to mine all reddits from Reddit.com for node.js and MongoDb. Complies with reddit policy 1 request per 2 seconds.
var mongo = require('mongodb'),
Server = mongo.Server,
Db = mongo.Db;
http = require('http'),
var server = new Server('localhost', 27017, {auto_reconnect: true}),
db = new Db('redditDb', server),
options = {
host: 'www.reddit.com',
path: '/reddits.json'
},
makeRequest = function(options){
var callback = function(response) {
var str = '';
response.on('data', function (chunk) {
str += chunk;
});
response.on('end', function () {
try {
var result = JSON.parse(str),
childData = result && result.data && result.data.children;
if(childData) {
db.collection('reddits', function(err, collection) {
for(var i = 0; i < childData.length; ++i){
collection.insert(childData[i].data, {safe:true}, function(err, result) {
if (!err) {
console.log('Child inserted')
} else {
console.log('Failed to insert child');
}
});
}
});
}
var after = result && result.data && result.data.after;
if (after) {
options.path = '/reddits.json?after=' + result.data.after;
setTimeout(function(){
makeRequest(options);
}, 2000);
} else {
console.log('After is not defined');
}
} catch(e) {
console.log(e);
console.log('Failed to process response')
}
});
};
console.log('Requesting ' + options.path);
http.request(options, callback).end();
};
db.open(function(err, db) {
if(!err) {
console.log("We are connected. Collecting data");
makeRequest(options);
}
});
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