v1.3.5: 性能优化 - 工作空间分支获取改为轻量级 fetch

- 工作空间模式下先执行轻量级 fetch 更新 refs
- 保持读取本地 refs 的快速响应特性
- fetch 失败时回退到缓存的本地 refs
- 添加凭据支持以确保 fetch 成功
- 更新注释说明新的获取策略

Author: jicheng

pom.xml

@@ -11,7 +11,7 @@
 
     <groupId>io.jenkins.plugins</groupId>
     <artifactId>active-git-branches-plugin</artifactId>
-    <version>1.3.0</version>
+    <version>1.3.5</version>
     <packaging>hpi</packaging>
 
     <name>Active Git Branches Parameter</name>

src/main/java/io/jenkins/plugins/activegitbranches/ActiveGitBranchesParameterDefinition.java

@@ -31,6 +31,7 @@
 import org.kohsuke.stapler.QueryParameter;
 import org.kohsuke.stapler.Stapler;
 import org.kohsuke.stapler.StaplerRequest;
+import org.eclipse.jgit.transport.URIish;
 
 import java.io.File;
 import java.io.IOException;
@@ -161,15 +162,15 @@ public List<BranchInfo> fetchBranches() {
     /**
      * Fetches branches from the remote Git repository.
      * Strategy:
-     * 1. Try workspace fetch + for-each-ref (fast + time-sorted) - PREFERRED
+     * 1. Try workspace fetch + for-each-ref (lightweight fetch + time-sorted) - PREFERRED
      * 2. If no workspace: use ls-remote (fast, alphabetical) or clone (slow, time-sorted)
      */
     private List<BranchInfo> fetchBranchesInternal() throws IOException, InterruptedException {
         if (repositoryUrl == null || repositoryUrl.isEmpty()) {
             throw new IOException("Repository URL is not configured");
         }
 
-        // First, always try workspace-based fetch (fast + preserves time sorting)
+        // First, always try workspace-based fetch (lightweight fetch + preserves time sorting)
         List<BranchInfo> result = tryFetchFromWorkspace();
         if (result != null) {
             LOGGER.info("Fetched branches from workspace with time-based sorting");
@@ -293,8 +294,8 @@ private List<BranchInfo> tryFetchFromWorkspace() {
     }
 
     /**
-     * Fetch branches from an existing workspace by reading local refs only.
-     * No network operation - instant response.
+     * Fetch branches from an existing workspace.
+     * Performs a lightweight fetch to update refs, then reads local refs.
      * Returns null if no local refs found (caller should fall back to other methods).
      */
     private List<BranchInfo> fetchBranchesFromWorkspace(FilePath workspace) throws IOException, InterruptedException {
@@ -308,10 +309,24 @@ private List<BranchInfo> fetchBranchesFromWorkspace(FilePath workspace) throws I
                 .using("jgit")
                 .getClient();
 
-        // Only read existing local refs (instant, no network)
+        // Add credentials if available
+        StandardCredentials credentials = getCredentials();
+        if (credentials != null) {
+            git.addCredentials(repositoryUrl, credentials);
+        }
+        
+        // Fetch latest refs from remote (lightweight, only updates refs)
+        try {
+            git.fetch_().from(new URIish(repositoryUrl), Collections.emptyList()).execute();
+            LOGGER.info("Fetched latest refs from remote");
+        } catch (Exception e) {
+            LOGGER.log(Level.WARNING, "Failed to fetch from remote, using cached refs", e);
+        }
+        
+        // Read local refs (now up-to-date)
         List<BranchInfo> localRefs = readLocalRefs(git);
         if (!localRefs.isEmpty()) {
-            LOGGER.info("Using cached local refs (" + localRefs.size() + " branches)");
+            LOGGER.info("Using local refs (" + localRefs.size() + " branches)");
             return applyLimits(localRefs);
         }