diff options
Diffstat (limited to 'app/src/main/java/org/pacien/tincapp/activities/viewlog/LogLiveData.kt')
-rw-r--r-- | app/src/main/java/org/pacien/tincapp/activities/viewlog/LogLiveData.kt | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/app/src/main/java/org/pacien/tincapp/activities/viewlog/LogLiveData.kt b/app/src/main/java/org/pacien/tincapp/activities/viewlog/LogLiveData.kt new file mode 100644 index 0000000..f410a8c --- /dev/null +++ b/app/src/main/java/org/pacien/tincapp/activities/viewlog/LogLiveData.kt | |||
@@ -0,0 +1,74 @@ | |||
1 | /* | ||
2 | * Tinc App, an Android binding and user interface for the tinc mesh VPN daemon | ||
3 | * Copyright (C) 2017-2018 Pacien TRAN-GIRARD | ||
4 | * | ||
5 | * This program is free software: you can redistribute it and/or modify | ||
6 | * it under the terms of the GNU General Public License as published by | ||
7 | * the Free Software Foundation, either version 3 of the License, or | ||
8 | * (at your option) any later version. | ||
9 | * | ||
10 | * This program is distributed in the hope that it will be useful, | ||
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
13 | * GNU General Public License for more details. | ||
14 | * | ||
15 | * You should have received a copy of the GNU General Public License | ||
16 | * along with this program. If not, see <https://www.gnu.org/licenses/>. | ||
17 | */ | ||
18 | |||
19 | package org.pacien.tincapp.activities.viewlog | ||
20 | |||
21 | import android.arch.lifecycle.LiveData | ||
22 | import org.pacien.tincapp.commands.Executor | ||
23 | import org.pacien.tincapp.commands.Tinc | ||
24 | import java.util.* | ||
25 | import kotlin.concurrent.timer | ||
26 | |||
27 | /** | ||
28 | * @author pacien | ||
29 | */ | ||
30 | class LogLiveData(private val netName: String, private val logLevel: Int, private val logLineSize: Int) : LiveData<List<String>>() { | ||
31 | private val updateInterval = 250L // milliseconds | ||
32 | private val executor = Executor | ||
33 | private val log = LinkedList<String>() | ||
34 | private var loggerProcess: Process? = null | ||
35 | private var logUpdateTimer: Timer? = null | ||
36 | |||
37 | override fun onActive() { | ||
38 | loggerProcess = startNewLogger() | ||
39 | logUpdateTimer = timer(period = updateInterval, action = { outputLog() }) | ||
40 | } | ||
41 | |||
42 | override fun onInactive() { | ||
43 | loggerProcess?.destroy() | ||
44 | logUpdateTimer?.apply { cancel() }?.apply { purge() } | ||
45 | } | ||
46 | |||
47 | private fun startNewLogger(): Process { | ||
48 | val newProcess = Tinc.log(netName, logLevel) | ||
49 | executor.runAsyncTask { captureProcessOutput(newProcess) } | ||
50 | return newProcess | ||
51 | } | ||
52 | |||
53 | private fun captureProcessOutput(process: Process) { | ||
54 | process.inputStream?.use { inputStream -> | ||
55 | inputStream.bufferedReader().useLines { lines -> | ||
56 | lines.forEach { appendToLog(it) } | ||
57 | } | ||
58 | } | ||
59 | } | ||
60 | |||
61 | private fun appendToLog(line: String) { | ||
62 | synchronized(log) { | ||
63 | if (log.size >= logLineSize) log.removeFirst() | ||
64 | log.addLast(line) | ||
65 | } | ||
66 | } | ||
67 | |||
68 | private fun outputLog() { | ||
69 | synchronized(log) { | ||
70 | val logView = ArrayList(log) | ||
71 | postValue(logView) | ||
72 | } | ||
73 | } | ||
74 | } | ||