1 files changed, 25 insertions, 0 deletions
diff --git a/src/main/kotlin/events/subscription/SubscriptionList.kt b/src/main/kotlin/events/subscription/SubscriptionList.kt
new file mode 100644
index 0000000..e74a65a
--- /dev/null
+++ b/src/main/kotlin/events/subscription/SubscriptionList.kt
@@ -0,0 +1,25 @@
+package moe.nea.firmament.events.subscription
+
+import java.util.ServiceLoader
+import kotlin.streams.asSequence
+import moe.nea.firmament.Firmament
+
+interface SubscriptionList {
+    fun provideSubscriptions(addSubscription: (Subscription<*>) -> Unit)
+
+    companion object {
+        val allLists by lazy {
+            ServiceLoader.load(SubscriptionList::class.java)
+                .stream()
+                .asSequence()
+                .mapNotNull {
+                    kotlin.runCatching { it.get() }
+                        .getOrElse { ex ->
+                            Firmament.logger.error("Could not load subscriptions from ${it.type()}", ex)
+                            null
+                        }
+                }
+                .toList()
+        }
+    }
+}