+/*
+ * Sone - IdentityLoader.java - Copyright © 2013–2019 David 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.base.*
+import com.google.inject.*
+import net.pterodactylus.sone.freenet.plugin.*
+import java.util.concurrent.TimeUnit.*
+import java.util.logging.*
+
+/**
+ * Loads [OwnIdentity]s and the [Identity]s they trust.
+ */
+class IdentityLoader @Inject constructor(private val webOfTrustConnector: WebOfTrustConnector, private val context: Context? = null) {
+
+ private val logger: Logger = Logger.getLogger(IdentityLoader::class.java.name)
+
+ @Throws(WebOfTrustException::class)
+ fun loadIdentities() =
+ time({ stopwatch, identities -> "Loaded ${identities.size} own identities in ${stopwatch.elapsed(MILLISECONDS) / 1000.0}s." }) {
+ webOfTrustConnector.loadAllOwnIdentities()
+ }.let(this::loadTrustedIdentitiesForOwnIdentities)
+
+ @Throws(PluginException::class)
+ private fun loadTrustedIdentitiesForOwnIdentities(ownIdentities: Collection<OwnIdentity>) =
+ ownIdentities
+ .also { logger.fine { "Getting trusted identities for ${it.size} own identities..." } }
+ .associateWith { ownIdentity ->
+ logger.fine { "Getting trusted identities for $ownIdentity..." }
+ if (ownIdentity.doesNotHaveCorrectContext()) {
+ logger.fine { "Skipping $ownIdentity because of incorrect context." }
+ emptySet()
+ } else {
+ logger.fine { "Loading trusted identities for $ownIdentity from WoT..." }
+ time({ stopwatch, identities -> "Loaded ${identities.size} identities for ${ownIdentity.nickname} in ${stopwatch.elapsed(MILLISECONDS) / 1000.0}s." }) {
+ webOfTrustConnector.loadTrustedIdentities(ownIdentity, context?.context)
+ }
+ }
+ }
+
+ private fun OwnIdentity.doesNotHaveCorrectContext() =
+ context?.let { it.context !in contexts } ?: false
+
+ private fun <R> time(logMessage: (Stopwatch, R) -> String, loader: () -> R) =
+ Stopwatch.createStarted().let { stopwatch ->
+ loader().also { logger.fine(logMessage(stopwatch, it)) }
+ }
+
+}