(refs #1101)Experimental implementation of GitLFS Batch API

src/main/scala/gitbucket/core/servlet/GitLfsBatchServlet.scala

@@ -0,0 +1,97 @@
+package gitbucket.core.servlet
+
+import javax.servlet.http.{HttpServlet, HttpServletRequest, HttpServletResponse}
+
+import org.json4s._
+import org.json4s.jackson.Serialization.{read, write}
+
+import java.util.Date
+
+/**
+ * Provides GitLFS Batch API.
+ *
+ * https://github.com/git-lfs/git-lfs/blob/master/docs/api/batch.md
+ */
+class GitLfsBatchServlet extends HttpServlet {
+
+  // TODO GitLFS server url must be configurable
+  private val GitLfsServerUrl = "http://localhost:9090/git-lfs"
+  
+  private implicit val jsonFormats = gitbucket.core.api.JsonFormat.jsonFormats
+
+  override protected def doPost(req: HttpServletRequest, res: HttpServletResponse): Unit = {
+    val batchRequest = read[BatchRequest](req.getInputStream)
+
+    val batchResponse = batchRequest.operation match {
+      case "upload" =>
+        BatchUploadResponse("basic", batchRequest.objects.map { requestObject =>
+          BatchResponseObject(
+            requestObject.oid,
+            requestObject.size,
+            true,
+            Actions(
+              upload = Some(Action(
+                href = GitLfsServerUrl + "/" + requestObject.oid,
+                expires_at = new Date(System.currentTimeMillis + 60000)
+              ))
+            )
+          )
+        })
+      case "download" =>
+        BatchUploadResponse("basic", batchRequest.objects.map { requestObject =>
+          BatchResponseObject(
+            requestObject.oid,
+            requestObject.size,
+            true,
+            Actions(
+              download = Some(Action(
+                href = GitLfsServerUrl + "/" + requestObject.oid,
+                expires_at = new Date(System.currentTimeMillis + 60000)
+              ))
+            )
+          )
+        })
+    }
+
+    res.setContentType("application/vnd.git-lfs+json")
+
+    val out = res.getWriter
+    out.print(write(batchResponse))
+    out.flush()
+  }
+
+}
+
+case class BatchRequest(
+  operation: String,
+  transfers: Seq[String],
+  objects: Seq[BatchRequestObject]
+)
+
+case class BatchRequestObject(
+  oid: String,
+  size: Long
+)
+
+case class BatchUploadResponse(
+  transfer: String,
+  objects: Seq[BatchResponseObject]
+)
+
+case class BatchResponseObject(
+  oid: String,
+  size: Long,
+  authenticated: Boolean,
+  actions: Actions
+)
+
+case class Actions(
+  download: Option[Action] = None,
+  upload: Option[Action] = None
+)
+
+case class Action(
+  href: String,
+  header: Map[String, String] = Map.empty,
+  expires_at: Date
+)

src/main/webapp/WEB-INF/web.xml

@@ -46,6 +46,17 @@
     <url-pattern>/git/*</url-pattern>
   </servlet-mapping>
 
+  <servlet>
+    <servlet-name>GitLfsBatchServlet</servlet-name>
+    <servlet-class>gitbucket.core.servlet.GitLfsBatchServlet</servlet-class>
+    <async-supported>true</async-supported>
+  </servlet>
+
+  <servlet-mapping>
+    <servlet-name>GitLfsBatchServlet</servlet-name>
+    <url-pattern>/git/root/git-lfs-test.git/info/lfs/*</url-pattern>
+  </servlet-mapping>
+
   <!-- ===================================================================== -->
   <!-- Supply assets which are provided by plugins -->
   <!-- ===================================================================== -->