blob: 340f83d8ae23ac3493a93ec86c48712ea559a783 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
|
//
// CustomFormatLogHandler.swift
// MullvadVPN
//
// Created by pronebird on 02/08/2020.
// Copyright © 2020 Mullvad VPN AB. All rights reserved.
//
import Foundation
import Logging
struct CustomFormatLogHandler: LogHandler {
var metadata: Logger.Metadata = [:]
var logLevel: Logger.Level = .debug
private let label: String
private let streams: [TextOutputStream]
private let dateFormatter = Self.makeDateFormatter()
static func makeDateFormatter() -> DateFormatter {
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "YYYY-MM-dd HH:mm:ss.SSS"
return dateFormatter
}
init(label: String, streams: [TextOutputStream]) {
self.label = label
self.streams = streams
}
subscript(metadataKey metadataKey: String) -> Logger.Metadata.Value? {
get {
return metadata[metadataKey]
}
set(newValue) {
metadata[metadataKey] = newValue
}
}
func log(level: Logger.Level,
message: Logger.Message,
metadata: Logger.Metadata?,
source: String,
file: String,
function: String,
line: UInt)
{
let mergedMetadata = self.metadata.merging(metadata ?? [:]) { (lhs, rhs) -> Logger.MetadataValue in
return rhs
}
let prettyMetadata = Self.formatMetadata(mergedMetadata)
let metadataOutput = prettyMetadata.isEmpty ? "" : " \(prettyMetadata)"
let timestamp = dateFormatter.string(from: Date())
let formattedMessage = "[\(timestamp)][\(self.label)][\(level)]\(metadataOutput) \(message)\n"
for var stream in streams {
stream.write(formattedMessage)
}
}
private static func formatMetadata(_ metadata: Logger.Metadata) -> String {
return metadata.map { "\($0)=\($1)" }.joined(separator: " ")
}
}
|
