X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=src%2Fmain%2Fkotlin%2Fnet%2Fpterodactylus%2Fsone%2Ffreenet%2Fwot%2FWebOfTrustPinger.kt;fp=src%2Fmain%2Fkotlin%2Fnet%2Fpterodactylus%2Fsone%2Ffreenet%2Fwot%2FWebOfTrustPinger.kt;h=e090133d385648324cc42da0cda8a702535b257b;hb=ceac45f8b8a241e8f9809d70eeda7897f5e280b7;hp=0000000000000000000000000000000000000000;hpb=5cfe9916e6b52b68a403873e35683ce242be4793;p=Sone.git

diff --git a/src/main/kotlin/net/pterodactylus/sone/freenet/wot/WebOfTrustPinger.kt b/src/main/kotlin/net/pterodactylus/sone/freenet/wot/WebOfTrustPinger.kt
new file mode 100644
index 0000000..e090133
--- /dev/null
+++ b/src/main/kotlin/net/pterodactylus/sone/freenet/wot/WebOfTrustPinger.kt
@@ -0,0 +1,50 @@
+/**
+ * Sone - WebOfTrustPinger.kt - Copyright © 2019 David ‘Bombe’ Roden
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package net.pterodactylus.sone.freenet.wot
+
+import com.google.common.eventbus.*
+import net.pterodactylus.sone.core.event.*
+import net.pterodactylus.sone.freenet.plugin.*
+import java.util.concurrent.atomic.*
+
+/**
+ * [Runnable] that is scheduled via an [Executor][java.util.concurrent.Executor],
+ * checks whether the web of trust plugin can be communicated with, sends
+ * events if its status changes and reschedules itself.
+ */
+class WebOfTrustPinger(private val eventBus: EventBus, private val webOfTrustReacher: () -> Unit, private val reschedule: () -> Unit) : Runnable {
+
+	private val lastState = AtomicBoolean(false)
+
+	override fun run() {
+		try {
+			webOfTrustReacher()
+			if (!lastState.get()) {
+				eventBus.post(WebOfTrustAppeared())
+				lastState.set(true)
+			}
+		} catch (e: PluginException) {
+			if (lastState.get()) {
+				eventBus.post(WebOfTrustDisappeared())
+				lastState.set(false)
+			}
+		}
+		reschedule()
+	}
+
+}