|
1 | | -var level = require('level'); |
2 | | -var has = require('has'); |
3 | | -var pump = require('pump'); |
4 | | -var fs = require('fs'); |
5 | | -var net = require('net'); |
6 | | -var path = require('path'); |
7 | | -var multileveldown = require('multileveldown'); |
| 1 | +'use strict' |
| 2 | + |
| 3 | +var level = require('level') |
| 4 | +var has = require('has') |
| 5 | +var pump = require('pump') |
| 6 | +var fs = require('fs') |
| 7 | +var net = require('net') |
| 8 | +var path = require('path') |
| 9 | +var multileveldown = require('multileveldown') |
8 | 10 |
|
9 | 11 | module.exports = function (dir, opts) { |
10 | | - if (!opts) opts = {}; |
11 | | - if (!has(opts, 'retry')) opts.retry = true; |
12 | | - |
13 | | - var sockPath = process.platform === 'win32' ? |
14 | | - '\\\\.\\pipe\\level-party\\' + path.resolve(dir) : |
15 | | - path.join(dir, 'level-party.sock'); |
16 | | - |
17 | | - var client = multileveldown.client(opts); |
18 | | - |
19 | | - client.open(tryConnect); |
20 | | - |
21 | | - function tryConnect () { |
22 | | - if (!client.isOpen()) return; |
23 | | - |
24 | | - var socket = net.connect(sockPath); |
25 | | - var connected = false; |
26 | | - |
27 | | - socket.on('connect', function () { |
28 | | - connected = true; |
29 | | - }); |
30 | | - |
31 | | - // we pass socket as the ref option so we dont hang the event loop |
32 | | - pump(socket, client.createRpcStream({ref: socket}), socket, function () { |
33 | | - if (!client.isOpen()) return; |
34 | | - |
35 | | - var db = level(dir, opts, onopen); |
36 | | - |
37 | | - function onopen (err) { |
38 | | - if (err) { |
39 | | - if (connected) return tryConnect(); |
40 | | - return setTimeout(tryConnect, 100); |
41 | | - } |
42 | | - |
43 | | - fs.unlink(sockPath, function (err) { |
44 | | - if (err && err.code !== 'ENOENT') return db.emit('error', err); |
45 | | - if (!client.isOpen()) return; |
46 | | - |
47 | | - var sockets = []; |
48 | | - var server = net.createServer(function (sock) { |
49 | | - if (sock.unref) sock.unref(); |
50 | | - sockets.push(sock); |
51 | | - pump(sock, multileveldown.server(db), sock, function () { |
52 | | - sockets.splice(sockets.indexOf(sock), 1); |
53 | | - }); |
54 | | - }); |
55 | | - |
56 | | - client.close = shutdown; |
57 | | - client.emit('leader'); |
58 | | - client.forward(db); |
59 | | - |
60 | | - server.listen(sockPath, onlistening); |
61 | | - |
62 | | - function shutdown (cb) { |
63 | | - sockets.forEach(function (sock) { |
64 | | - sock.destroy(); |
65 | | - }); |
66 | | - server.close(function () { |
67 | | - db.close(cb); |
68 | | - }); |
69 | | - } |
70 | | - |
71 | | - function onlistening () { |
72 | | - if (server.unref) server.unref(); |
73 | | - if (client.isFlushed()) return; |
74 | | - |
75 | | - var sock = net.connect(sockPath); |
76 | | - pump(sock, client.createRpcStream(), sock); |
77 | | - client.once('flush', function () { |
78 | | - sock.destroy(); |
79 | | - }); |
80 | | - } |
81 | | - }); |
82 | | - } |
83 | | - }); |
84 | | - }; |
85 | | - |
86 | | - return client; |
87 | | -}; |
| 12 | + if (!opts) opts = {} |
| 13 | + if (!has(opts, 'retry')) opts.retry = true |
| 14 | + |
| 15 | + var sockPath = process.platform === 'win32' |
| 16 | + ? '\\\\.\\pipe\\level-party\\' + path.resolve(dir) |
| 17 | + : path.join(dir, 'level-party.sock') |
| 18 | + |
| 19 | + var client = multileveldown.client(opts) |
| 20 | + |
| 21 | + client.open(tryConnect) |
| 22 | + |
| 23 | + function tryConnect () { |
| 24 | + if (!client.isOpen()) return |
| 25 | + |
| 26 | + var socket = net.connect(sockPath) |
| 27 | + var connected = false |
| 28 | + |
| 29 | + socket.on('connect', function () { |
| 30 | + connected = true |
| 31 | + }) |
| 32 | + |
| 33 | + // we pass socket as the ref option so we dont hang the event loop |
| 34 | + pump(socket, client.createRpcStream({ ref: socket }), socket, function () { |
| 35 | + if (!client.isOpen()) return |
| 36 | + |
| 37 | + var db = level(dir, opts, onopen) |
| 38 | + |
| 39 | + function onopen (err) { |
| 40 | + if (err) { |
| 41 | + if (connected) return tryConnect() |
| 42 | + return setTimeout(tryConnect, 100) |
| 43 | + } |
| 44 | + |
| 45 | + fs.unlink(sockPath, function (err) { |
| 46 | + if (err && err.code !== 'ENOENT') return db.emit('error', err) |
| 47 | + if (!client.isOpen()) return |
| 48 | + |
| 49 | + var sockets = [] |
| 50 | + var server = net.createServer(function (sock) { |
| 51 | + if (sock.unref) sock.unref() |
| 52 | + sockets.push(sock) |
| 53 | + pump(sock, multileveldown.server(db), sock, function () { |
| 54 | + sockets.splice(sockets.indexOf(sock), 1) |
| 55 | + }) |
| 56 | + }) |
| 57 | + |
| 58 | + client.close = shutdown |
| 59 | + client.emit('leader') |
| 60 | + client.forward(db) |
| 61 | + |
| 62 | + server.listen(sockPath, onlistening) |
| 63 | + |
| 64 | + function shutdown (cb) { |
| 65 | + sockets.forEach(function (sock) { |
| 66 | + sock.destroy() |
| 67 | + }) |
| 68 | + server.close(function () { |
| 69 | + db.close(cb) |
| 70 | + }) |
| 71 | + } |
| 72 | + |
| 73 | + function onlistening () { |
| 74 | + if (server.unref) server.unref() |
| 75 | + if (client.isFlushed()) return |
| 76 | + |
| 77 | + var sock = net.connect(sockPath) |
| 78 | + pump(sock, client.createRpcStream(), sock) |
| 79 | + client.once('flush', function () { |
| 80 | + sock.destroy() |
| 81 | + }) |
| 82 | + } |
| 83 | + }) |
| 84 | + } |
| 85 | + }) |
| 86 | + }; |
| 87 | + |
| 88 | + return client |
| 89 | +} |
0 commit comments