chore: Bust OAuth2 client cache for spring boot 3.3 (#36660)

app/server/appsmith-server/src/main/java/com/appsmith/server/configurations/RedisConfig.java

@@ -215,7 +215,7 @@ public byte[] serialize(Object t) {
                 boolean allValuesAreClientDTOs = true;
                 for (final LoginSource loginSource : LoginSource.oauthSources) {
                     final Object value = data.get(loginSource.name().toLowerCase());
-                    if (value != null && !(value instanceof OAuth2AuthorizedClientDTO)) {
+                    if (value != null && !(value instanceof OAuth2AuthorizedClient)) {
                         allValuesAreClientDTOs = false;
                         break;
                     }

app/server/appsmith-server/src/main/java/com/appsmith/server/migrations/db/ce/Migration063CacheBustSpringBoot3_3.java

@@ -0,0 +1,38 @@
+package com.appsmith.server.migrations.db.ce;
+
+import io.mongock.api.annotations.ChangeUnit;
+import io.mongock.api.annotations.Execution;
+import io.mongock.api.annotations.RollbackExecution;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.data.redis.core.ReactiveRedisOperations;
+import org.springframework.data.redis.core.script.RedisScript;
+import reactor.core.publisher.Flux;
+
+@RequiredArgsConstructor
+@Slf4j
+@ChangeUnit(order = "063", id = "reset_session_oauth2_spring_3_3")
+public class Migration063CacheBustSpringBoot3_3 {
+
+    private final ReactiveRedisOperations<String, String> reactiveRedisOperations;
+
+    @RollbackExecution
+    public void rollbackExecution() {}
+
+    @Execution
+    public void execute() {
+        doClearRedisOAuth2AuthClientKeys(reactiveRedisOperations);
+    }
+
+    public static void doClearRedisOAuth2AuthClientKeys(
+            ReactiveRedisOperations<String, String> reactiveRedisOperations) {
+        final String authorizedClientsKey =
+                "sessionAttr:org.springframework.security.oauth2.client.web.server.WebSessionServerOAuth2AuthorizedClientRepository.AUTHORIZED_CLIENTS";
+        final String script =
+                "for _,k in ipairs(redis.call('keys','spring:session:sessions:*')) do local fieldExists = redis.call('hexists', k, '"
+                        + authorizedClientsKey + "'); if fieldExists == 1 then redis.call('del', k) end end";
+        final Flux<Object> flushdb = reactiveRedisOperations.execute(RedisScript.of(script));
+
+        flushdb.blockLast();
+    }
+}