fix: 尝试修复重复构建rag.exe, 加快构建速度

Author: yefansky

.github/workflows/release.yml

@@ -16,59 +16,42 @@ jobs:
 
       # Calculate SHA256 and check if build is needed
       - name: Check if build is needed
-        id: sha256
+        id: check_build
         run: |
-          Set-PSDebug -Trace 1
+          $sourceFile = "src/python/rag.py"
+          $md5File = "src.md5"
+      
+          # 计算当前文件的MD5
+          $currentMD5 = (Get-FileHash -Path $sourceFile -Algorithm MD5).Hash
+          echo "Current MD5: $currentMD5"
+      
+          # 尝试从最新release下载src.md5
           try {
-            $sha256 = (Get-FileHash -Path src/python/rag.py -Algorithm SHA256).Hash
-            echo "Current SHA256: $sha256"
-            $previous_sha256 = "${{ github.event.before }}"
-            echo "Previous SHA256: $previous_sha256"
-            
-            if ($previous_sha256 -and $previous_sha256 -ne "0000000000000000000000000000000000000000") {
-              $rag_path = "src/python/rag.py" -replace '\\', '/'
-              echo "Checking if $rag_path exists in $previous_sha256"
-              $file_exists = git cat-file -e "${previous_sha256}:$rag_path" 2>$null
-              $check_exit_code = $LASTEXITCODE
+            $latestRelease = gh api repos/${{ github.repository }}/releases/latest --jq '.assets[] | select(.name == "src.md5")'
+            if ($latestRelease) {
+              $downloadUrl = $latestRelease.browser_download_url
+              echo "Downloading src.md5 from latest release: $downloadUrl"
+              Invoke-WebRequest -Uri $downloadUrl -OutFile $md5File -ErrorAction Stop
 
-              if ($check_exit_code -eq 0) {
-                $previous_content = git show "${previous_sha256}:$rag_path" -- 2>&1
-                $git_exit_code = $LASTEXITCODE
-                $LASTEXITCODE = 0
-                echo "Git show exit code: $git_exit_code"
-                echo "Git show output: $previous_content"
-                
-                if ($previous_content -and $git_exit_code -eq 0) {
-                  $tempFile = Join-Path $PWD "temp_rag.py"
-                  echo $previous_content | Out-File $tempFile -Encoding utf8NoBOM
-                  if (Test-Path $tempFile) {
-                    $previous_hash = (Get-FileHash -Path $tempFile -Algorithm SHA256).Hash
-                    echo "Previous SHA256: $previous_hash"
-                    if ($previous_hash -eq $sha256) {
-                      echo "No changes detected in rag.py, skipping build and release."
-                      exit 0
-                    } else {
-                      echo "Hash mismatch, proceeding with build."
-                    }
-                  } else {
-                    echo "Failed to create temp_rag.py"
-                  }
-                } else {
-                  echo "Failed to retrieve previous content, proceeding with build."
-                }
-              } else {
-                echo "src/python/rag.py does not exist in commit $previous_sha256, proceeding with build."
+              $storedMD5 = Get-Content $md5File -ErrorAction Stop
+              echo "Stored MD5: $storedMD5"
+      
+              if ($currentMD5 -eq $storedMD5) {
+                echo "::notice::Source file unchanged - skipping build"
+                echo "build_needed=false" >> $env:GITHUB_OUTPUT
+                exit 0
               }
-            } else {
-              echo "No valid previous SHA, proceeding with build."
             }
-            echo "Building new rag.exe due to changes or no previous commit."
           } catch {
-            echo "Error in hash comparison: $_"
-            exit 1
-          } finally {
-            Remove-Item -Path temp_rag.py -Force -ErrorAction SilentlyContinue
+            echo "::warning::Could not retrieve stored MD5 (first build?): $($_.Exception.Message)"
           }
+      
+          echo "::notice::Source file changed or no previous MD5 found - proceeding with build"
+          echo "build_needed=true" >> $env:GITHUB_OUTPUT
+          
+          # 生成新的MD5文件供后续使用
+          echo $currentMD5.ToLower() > $md5File
+          echo "Generated new MD5 file"
         shell: pwsh
 
       # Set up Python
@@ -131,6 +114,7 @@ jobs:
           files: |
             temp_dist/rag.exe
             temp_dist/md5.txt
+            src.md5
           tag_name: latest
           name: Latest RAG Executable
           draft: false