fix: route for the tag is not registered when halo starts (#3322)

#### What type of PR is this?
/kind bug
/area core
/milestone 2.3.x

#### What this PR does / why we need it:
1. 去掉原 TagReconciler 的 requeue 逻辑，来临时解决大量 tag 时 reconciler 空转导致 cpu 下不来的问题，参考： https://github.com/halo-dev/halo/issues/3311
2. 增加 TagRouteReconciler 在启动时注册路由

#### Which issue(s) this PR fixes:
Fixes #3321

#### Special notes for your reviewer:
/cc @halo-dev/sig-halo 
#### Does this PR introduce a user-facing change?
```release-note
修复 #3316 引入的 tags 标签的路由没有注册的问题
```

src/main/java/run/halo/app/core/extension/reconciler/TagReconciler.java

@@ -1,6 +1,5 @@
 package run.halo.app.core.extension.reconciler;
 
-import java.time.Duration;
 import java.util.HashSet;
 import java.util.List;
 import java.util.Objects;
@@ -34,20 +33,17 @@ public class TagReconciler implements Reconciler<Reconciler.Request> {
 
     @Override
     public Result reconcile(Request request) {
-        return client.fetch(Tag.class, request.name())
-            .map(tag -> {
+        client.fetch(Tag.class, request.name())
+            .ifPresent(tag -> {
                 if (isDeleted(tag)) {
                     cleanUpResourcesAndRemoveFinalizer(request.name());
-                    return new Result(false, null);
+                    return;
                 }
                 addFinalizerIfNecessary(tag);
 
-                this.reconcileStatusPermalink(request.name());
-
                 reconcileStatusPosts(request.name());
-                return new Result(true, Duration.ofMinutes(1));
-            })
-            .orElseGet(() -> new Result(false, null));
+            });
+        return new Result(false, null);
     }
 
     @Override
@@ -90,22 +86,6 @@ public class TagReconciler implements Reconciler<Reconciler.Request> {
         });
     }
 
-    private void reconcileStatusPermalink(String tagName) {
-        client.fetch(Tag.class, tagName)
-            .ifPresent(tag -> {
-                Tag oldTag = JsonUtils.deepCopy(tag);
-                tagPermalinkPolicy.onPermalinkDelete(oldTag);
-
-                tag.getStatusOrDefault()
-                    .setPermalink(tagPermalinkPolicy.permalink(tag));
-                tagPermalinkPolicy.onPermalinkAdd(tag);
-
-                if (!oldTag.equals(tag)) {
-                    client.update(tag);
-                }
-            });
-    }
-
     private void reconcileStatusPosts(String tagName) {
         client.fetch(Tag.class, tagName).ifPresent(tag -> {
             Tag oldTag = JsonUtils.deepCopy(tag);

src/main/java/run/halo/app/core/extension/reconciler/TagRouteReconciler.java

@@ -0,0 +1,56 @@
+package run.halo.app.core.extension.reconciler;
+
+import lombok.RequiredArgsConstructor;
+import org.apache.commons.lang3.StringUtils;
+import org.springframework.stereotype.Component;
+import run.halo.app.content.permalinks.TagPermalinkPolicy;
+import run.halo.app.core.extension.content.Tag;
+import run.halo.app.extension.ExtensionClient;
+import run.halo.app.extension.controller.Controller;
+import run.halo.app.extension.controller.ControllerBuilder;
+import run.halo.app.extension.controller.Reconciler;
+
+@Component
+@RequiredArgsConstructor
+public class TagRouteReconciler implements Reconciler<Reconciler.Request> {
+    private final ExtensionClient client;
+    private final TagPermalinkPolicy tagPermalinkPolicy;
+
+    @Override
+    public Result reconcile(Request request) {
+        client.fetch(Tag.class, request.name())
+            .ifPresent(tag -> {
+                if (tag.getMetadata().getDeletionTimestamp() != null) {
+                    // TagReconciler already did it, so there is no need to remove permalink
+                    return;
+                }
+
+                reconcilePermalinkRoute(request.name());
+            });
+        return new Result(false, null);
+    }
+
+    private void reconcilePermalinkRoute(String tagName) {
+        client.fetch(Tag.class, tagName)
+            .ifPresent(tag -> {
+                final String oldPermalink = tag.getStatusOrDefault().getPermalink();
+
+                tagPermalinkPolicy.onPermalinkDelete(tag);
+
+                String permalink = tagPermalinkPolicy.permalink(tag);
+                tag.getStatusOrDefault().setPermalink(permalink);
+                tagPermalinkPolicy.onPermalinkAdd(tag);
+
+                if (!StringUtils.equals(permalink, oldPermalink)) {
+                    client.update(tag);
+                }
+            });
+    }
+
+    @Override
+    public Controller setupWith(ControllerBuilder builder) {
+        return builder
+            .extension(new Tag())
+            .build();
+    }
+}

src/test/java/run/halo/app/core/extension/reconciler/TagReconcilerTest.java

@@ -40,32 +40,6 @@ class TagReconcilerTest {
     @InjectMocks
     private TagReconciler tagReconciler;
 
-    @Test
-    void reconcile() {
-        Tag tag = tag();
-        when(client.fetch(eq(Tag.class), eq("fake-tag")))
-            .thenReturn(Optional.of(tag));
-        when(tagPermalinkPolicy.permalink(any()))
-            .thenAnswer(arg -> "/tags/" + tag.getSpec().getSlug());
-        ArgumentCaptor<Tag> captor = ArgumentCaptor.forClass(Tag.class);
-
-        tagReconciler.reconcile(new TagReconciler.Request("fake-tag"));
-
-        verify(client, times(3)).update(captor.capture());
-        verify(tagPermalinkPolicy, times(1)).onPermalinkAdd(any());
-        verify(tagPermalinkPolicy, times(1)).onPermalinkDelete(any());
-        Tag capture = captor.getValue();
-        assertThat(capture.getStatus().getPermalink()).isEqualTo("/tags/fake-slug");
-
-        // change slug
-        tag.getSpec().setSlug("new-slug");
-        tagReconciler.reconcile(new TagReconciler.Request("fake-tag"));
-        verify(client, times(4)).update(captor.capture());
-        verify(tagPermalinkPolicy, times(2)).onPermalinkAdd(any());
-        verify(tagPermalinkPolicy, times(2)).onPermalinkDelete(any());
-        assertThat(capture.getStatus().getPermalink()).isEqualTo("/tags/new-slug");
-    }
-
     @Test
     void reconcileDelete() {
         Tag tag = tag();