chore: do not use coroutines apis for containerized LSP init healthcheck

Author: S-furi

completions/src/test/kotlin/lsp/utils/LspIntegrationTestUtils.kt

@@ -1,33 +1,29 @@
 package lsp.utils
 
-import kotlinx.coroutines.delay
-import kotlinx.coroutines.runBlocking
-import kotlinx.coroutines.withTimeoutOrNull
 import completions.lsp.client.KotlinLspClient
 import completions.lsp.client.LspConnectionManager
+import java.util.concurrent.TimeUnit
+import java.util.concurrent.TimeoutException
 import kotlin.time.Duration.Companion.milliseconds
-import kotlin.time.Duration.Companion.seconds
 
 object LspIntegrationTestUtils {
     const val DEFAULT_LSP_HOST = "localhost"
     const val DEFAULT_LSP_PORT = 9999
 
-    fun waitForLspReady(host: String = DEFAULT_LSP_HOST, port: Int = DEFAULT_LSP_PORT, workspace: String) =
-        runBlocking {
-            var lastError: Throwable? = null
-            var attempt = 0
-            withTimeoutOrNull(90.seconds) {
-                while (true) {
-                    try {
-                        KotlinLspClient(host, port).use { client ->
-                            client.initRequest(workspace, projectName = "probe").join()
-                        }
-                        return@withTimeoutOrNull
-                    } catch (t: Throwable) {
-                        lastError = t
-                        delay(LspConnectionManager.exponentialBackoffMillis(attempt++).milliseconds)
-                    }
+    fun waitForLspReady(host: String = DEFAULT_LSP_HOST, port: Int = DEFAULT_LSP_PORT, workspace: String) {
+        var lastError: Throwable?
+        var attempt = 0
+        while (true) {
+            try {
+                KotlinLspClient(host, port).use { client ->
+                    client.initRequest(workspace, projectName = "probe").get(90, TimeUnit.SECONDS)
                 }
-            } ?: error("LSP server did not become ready in time: ${lastError?.message}")
+                return
+            } catch (t: Throwable) {
+                lastError = t
+                if (t is TimeoutException) error("LSP server never started: $lastError")
+                Thread.sleep(LspConnectionManager.exponentialBackoffMillis(attempt++).milliseconds.inWholeMilliseconds)
+            }
         }
+    }
 }