From 7b9031db04b260429d91c33ed59ca0c979e9a808 Mon Sep 17 00:00:00 2001
From: azerr <azerr@redhat.com>
Date: Thu, 10 Aug 2023 17:46:19 +0200
Subject: [PATCH] fix: Too many non-blocking read actions submitted at once in
 LSPDiagnosticHandler

Fixes #1089

Signed-off-by: azerr <azerr@redhat.com>
---
 .../diagnostics/LSPDiagnosticHandler.java        | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/src/main/java/com/redhat/devtools/intellij/lsp4ij/operations/diagnostics/LSPDiagnosticHandler.java b/src/main/java/com/redhat/devtools/intellij/lsp4ij/operations/diagnostics/LSPDiagnosticHandler.java
index 67f271dfc..720023465 100644
--- a/src/main/java/com/redhat/devtools/intellij/lsp4ij/operations/diagnostics/LSPDiagnosticHandler.java
+++ b/src/main/java/com/redhat/devtools/intellij/lsp4ij/operations/diagnostics/LSPDiagnosticHandler.java
@@ -17,6 +17,7 @@
 import com.intellij.openapi.application.ApplicationManager;
 import com.intellij.openapi.application.ReadAction;
 import com.intellij.openapi.module.Module;
+import com.intellij.openapi.project.DumbService;
 import com.intellij.openapi.project.Project;
 import com.intellij.openapi.vfs.VirtualFile;
 import com.intellij.psi.PsiFile;
@@ -45,12 +46,21 @@ public LSPDiagnosticHandler(LanguageServerWrapper languageServerWrapper) {
 
     @Override
     public void accept(PublishDiagnosticsParams params) {
+        Project project = languageServerWrapper.getProject();
+        if(project.isDisposed()) {
+            return;
+        }
         if (ApplicationManager.getApplication().isReadAccessAllowed()) {
             updateDiagnostics(params);
         } else {
-            ReadAction.nonBlocking(() -> updateDiagnostics(params))
-                    .submit(AppExecutorUtil.getAppExecutorService());
-
+            var executeInSmartMode = DumbService.getInstance(languageServerWrapper.getProject()).isDumb();
+            var action = ReadAction.nonBlocking(() -> updateDiagnostics(params))
+                    .expireWith(languageServerWrapper)
+                    .coalesceBy(params);
+            if (executeInSmartMode) {
+                action.inSmartMode(project);
+            }
+            action.submit(AppExecutorUtil.getAppExecutorService());
         }
     }