private User[] GetUsers(StandardDB db, Dictionary <string, object> cache, string[] uids)
{
if (uids[0] == "#ALL_USER")
{
return(db.users.ToArray());
}
var uidcache = cache["uid-user"] as Dictionary <uint, int>;
if (uids[0] == "#BAN_UID")
{
var banuid = cache["banuid"] as HashSet <uint>;
return(banuid.Select(uid => uidcache.TryGetValue(uid, out var idx) ? idx : -1).Where(x => x >= 0)
.Select(idx => db.users[idx]).ToArray());
}
return(uids.Select(uid => UIDPool.Get(uid)).Where(uid => uid != uint.MaxValue)
.Select(uid => uidcache.TryGetValue(uid, out var idx) ? idx : -1).Where(x => x >= 0)
.Select(idx => db.users[idx]).ToArray());
}
public IActionResult SomeAnalyse()
{
if (!TryGetDB(out var db))
{
return(StatusCode(404));
}
if (!TryGetCache(out var cache))
{
return(StatusCode(404));
}
string target;
HashSet <uint> uids;
using (var reader = new JsonTextReader(new StreamReader(HttpContext.Request.Body)))
{
try
{
var args = Serializer.Deserialize <string[]>(reader);
target = args[0];
var ids = JsonConvert.DeserializeObject <HashSet <string> >(args[1]);
uids = ids.Select(uid => UIDPool.Get(uid)).Where(uid => uid != uint.MaxValue).ToHashSet();
if (ids.Contains("#BAN_UID"))
{
var banuid = cache["banuid"] as HashSet <uint>;
uids.UnionWith(banuid);
}
}
catch (Exception e)
{
LOG.LogError(e.Message);
return(StatusCode(500));
}
}
var ret = SomeAssoc(db, cache, target, uids);
GC.Collect(2, GCCollectionMode.Optimized, false, true);
return(Content(ret, "text/plain; charset=utf-8"));
}
private string[][] GetZanLinks(StandardDB db, Dictionary <string, object> cache, string[] uids, string target)
{
Console.WriteLine($"here get {uids.Length} uids");
if (target == "to")
{
var zanfcache = cache["from-zan"] as ILookup <uint, int>;
var zanartfcache = cache["from-zanart"] as ILookup <uint, int>;
var ansathcache = cache["ans-author"] as Dictionary <uint, uint>;
var artathcache = cache["art-author"] as Dictionary <uint, uint>;
var zanans = uids.SelectMany(uid =>
{
var id = UIDPool.Get(uid);
if (id == uint.MaxValue)
{
return(Enumerable.Empty <string[]>());
}
return(zanfcache[id].Select(idx =>
{
ansathcache.TryGetValue(db.zans[idx].to, out var ath);
return new string[] { uid, UIDPool.GetString(ath) };
}));
}).Where(pair => pair[1] != null);
var zanart = uids.SelectMany(uid =>
{
var id = UIDPool.Get(uid);
if (id == uint.MaxValue)
{
return(Enumerable.Empty <string[]>());
}
return(zanartfcache[id].Select(idx =>
{
artathcache.TryGetValue(db.zanarts[idx].to, out var ath);
return new string[] { uid, UIDPool.GetString(ath) };
}));
}).Where(pair => pair[1] != null);
return(zanans.Concat(zanart).ToArray());
}
else if (target == "from")
{
var athanscache = cache["author-ans"] as ILookup <uint, uint>;
var athartcache = cache["author-art"] as ILookup <uint, uint>;
var zantcache = cache["to-zan"] as ILookup <uint, int>;
var zanarttcache = cache["to-zanart"] as ILookup <uint, int>;
var zanans = uids.SelectMany(uid =>
{
var id = UIDPool.Get(uid);
if (id == uint.MaxValue)
{
return(Enumerable.Empty <string[]>());
}
return(athanscache[id].SelectMany(ansid => zantcache[ansid])
.Select(idx => new string[] { db.zans[idx].from, uid }));
});
var zanart = uids.SelectMany(uid =>
{
var id = UIDPool.Get(uid);
if (id == uint.MaxValue)
{
return(Enumerable.Empty <string[]>());
}
return(athanscache[id].SelectMany(artid => zanarttcache[artid])
.Select(idx => new string[] { db.zanarts[idx].from, uid }));
});
return(zanans.Concat(zanart).ToArray());
}
else
{
return(null);
}
}