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updated getPostsByPids method to resolve premature return issue, and

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refactored it to use async.map instead of eachSeries
This commit is contained in:
Julian Lam
2013-09-28 17:44:18 -04:00
parent 607ee8bbc1
commit 4cea313060
1 changed files with 12 additions and 51 deletions
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63
src/posts.js
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@@ -19,7 +19,6 @@ var RDB = require('./redis.js'),
Posts.getPostsByTid = function(tid, start, end, callback) {
RDB.lrange('tid:' + tid + ':posts', start, end, function(err, pids) {
RDB.handle(err);
if (pids.length) {
@@ -154,28 +153,23 @@ var RDB = require('./redis.js'),
RDB.hset('post:' + pid, field, value);
}
/* getPostsByPids using redis's multi pipeline */
Posts.getPostsByPids = function(pids, callback) {
var posts = []
var multi = RDB.multi();
var posts = [],
multi = RDB.multi();
for (v in pids) {
var _pid = pids[v]
multi.hgetall("post:"+_pid);
for(var x=0,numPids=pids.length;x<numPids;x++) {
multi.hgetall("post:"+pids[x]);
}
multi.exec(function (err, replies) {
async.eachSeries(replies, function(postData, _callback) {
if(postData) {
async.map(replies, function(postData, _callback) {
if (postData) {
postData.relativeTime = new Date(parseInt(postData.timestamp,10)).toISOString();
postData.post_rep = postData.reputation;
postData['edited-class'] = postData.editor !== '' ? '' : 'none';
postData['relativeEditTime'] = postData.edited !== '0' ? (new Date(parseInt(postData.edited,10)).toISOString()) : '';
if(postData.uploadedImages) {
if (postData.uploadedImages) {
try {
postData.uploadedImages = JSON.parse(postData.uploadedImages);
} catch(err) {
@@ -188,15 +182,13 @@ var RDB = require('./redis.js'),
postTools.parse(postData.content, function(err, content) {
postData.content = content;
posts.push(postData);
_callback(null, postData);
});
return _callback(null)
} else {
_callback(null);
}
else {
return _callback(null)
}
}, function(err) {
if(!err) {
}, function(err, posts) {
if (!err) {
return callback(null, posts);
} else {
return callback(err, null);
@@ -205,37 +197,6 @@ var RDB = require('./redis.js'),
})
}
Posts.getPostsByPids_original = function(pids, callback) {
var posts = [];
async.eachSeries(pids, function(pid, callback) {
Posts.getPostData(pid, function(postData) {
if (postData) {
postData.relativeTime = new Date(parseInt(postData.timestamp,10)).toISOString();
postData.post_rep = postData.reputation;
postData['edited-class'] = postData.editor !== '' ? '' : 'none';
postData['relativeEditTime'] = postData.edited !== '0' ? (new Date(parseInt(postData.edited,10)).toISOString()) : '';
postTools.parse(postData.content, function(err, content) {
postData.content = content;
posts.push(postData);
callback(null);
});
}
});
}, function(err) {
if (!err) {
callback(null, posts);
} else {
callback(err, null);
}
});
}
Posts.get_cid_by_pid = function(pid, callback) {
Posts.getPostField(pid, 'tid', function(tid) {
if (tid) {