initial commit2

2026-06-12 12:28:00 +03:00
parent 13447b858e
commit 59d33f8061
595 changed files with 11459 additions and 1 deletions
@@ -0,0 +1,57 @@
+package database
+
+import io.github.oshai.kotlinlogging.KotlinLogging
+import org.postgresql.PGConnection
+import javax.sql.DataSource
+
+private val logger = KotlinLogging.logger {}
+
+class CacheInvalidator(
+    private val dataSource: DataSource,
+    private val onInvalidated: () -> Unit
+) {
+    @Volatile
+    private var running = false
+    private var thread: Thread? = null
+
+    fun start() {
+        running = true
+        thread = Thread {
+            while (running) {
+                try {
+                    dataSource.connection.use { conn ->
+                        conn.autoCommit = true
+                        val pgConn = conn.unwrap(PGConnection::class.java)
+
+                        conn.createStatement().use { stmt ->
+                            stmt.execute("LISTEN cache_changed")
+                        }
+
+                        logger.info { "Listening for cache changes via PG NOTIFY..." }
+
+                        while (running && !conn.isClosed) {
+                            val notifications = pgConn.notifications
+                            if (notifications != null && notifications.isNotEmpty()) {
+                                logger.debug { "Cache invalidation received" }
+                                onInvalidated()
+                            }
+                            Thread.sleep(500)
+                        }
+                    }
+                } catch (e: Exception) {
+                    if (!running) break
+                    logger.warn(e) { "Cache listener error, reconnecting in 5s..." }
+                    Thread.sleep(5000)
+                }
+            }
+        }.also { it.isDaemon = true }.apply {
+            name = "pg-notify-listener"
+            start()
+        }
+    }
+
+    fun stop() {
+        running = false
+        thread?.interrupt()
+    }
+}