that.read('fs.files', {md5:image_md5}, function(data){
if(data.length != 0 ){
save_item_image(data[0]);
}
else{
myFS.put(content, name, 'w', function(err, res){
if(err) {
console.log(err);
return false;
}
save_item_image(res);
});
myFS.close();
}
});
save_image : function(content, name, item_id, callback){
var that = this;
var GridFS = require('GridFS').GridFS;
var myFS = new GridFS('zerg');
var md5 = require("MD5");
var image_md5 = md5(content);
that.read('fs.files', {md5:image_md5}, function(data){
if(data.length != 0 ){
save_item_image(data[0]);
}
else{
myFS.put(content, name, 'w', function(err, res){
if(err) {
console.log(err);
return false;
}
save_item_image(res);
});
myFS.close();
}
});
var save_item_image = function(obj){
that.read('taobao_item_images', {item_id:item_id}, function(data){
console.log("save_item_image:" + obj.md5);
if(data.length == 0){
var collection = that.db.collection("taobao_item_images");
collection.insert({
item_id : item_id,
images : [{id: obj._id, md5:obj.md5}]
}, {w:1}, function(e){
if(e)
console.log("mongo input error: " + e);
callback();
});
}
else{
var images_arr = data[0].images;
for(var k in images_arr){
if(images_arr[k].md5 == obj.md5){
callback();
return;
}
}
images_arr.push({
id: obj._id,
md5:obj.md5
});
var collection = that.db.collection("taobao_item_images");
collection.update({_id:data[0]._id}, {$set: {images:images_arr}}, function(e){
if(e)
console.log("mongo update error: " + e);
callback();
});
}
});
}
}