Git-LFS support

+ Metadata maintained in append-only JSON file providing complete audit
history.
+ Filestore menu item
	+ Lists filestore items
	+ Current size and availability
	+ Link to GitBlit Filestore help page (top right)
+ Hooks into existing repository permissions
+ Uses default repository path for out-of-box operation with Git-LFS
client
+ accessRestrictionFilter now has access to http method and auth header
+ Testing for servlet and manager

1 files changed, 159 insertions, 0 deletions

diff --git a/src/main/java/com/gitblit/models/FilestoreModel.java b/src/main/java/com/gitblit/models/FilestoreModel.java
new file mode 100644
index 00000000..ff7b210e
--- /dev/null
+++ b/src/main/java/com/gitblit/models/FilestoreModel.java
@@ -0,0 +1,159 @@
+/*
+ * Copyright 2015 gitblit.com.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.gitblit.models;
+
+import java.io.Serializable;
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+import java.util.NoSuchElementException;
+
+/**
+ * A FilestoreModel represents a file stored outside a repository but referenced by the repository using a unique objectID
+ * 
+ * @author Paul Martin
+ *
+ */
+public class FilestoreModel implements Serializable {
+
+	private static final long serialVersionUID = 1L;
+
+	public final String oid;
+	
+	private Long size;
+	private Status status;
+	
+	//Audit
+	private String stateChangedBy;
+	private Date stateChangedOn;
+
+	//Access Control
+	private List<String> repositories;
+	
+	public FilestoreModel(String id, long expectedSize, UserModel user, String repo) {
+		oid = id;
+		size = expectedSize;
+		status = Status.Upload_Pending;
+		stateChangedBy = user.getName();
+		stateChangedOn = new Date();
+		repositories = new ArrayList<String>();
+		repositories.add(repo);
+	}
+	
+	public synchronized long getSize() {
+		return size;
+	}
+	
+	public synchronized Status getStatus() {
+		return status;
+	}
+	
+	public synchronized String getChangedBy() {
+		return stateChangedBy;
+	}
+	
+	public synchronized Date getChangedOn() {
+		return stateChangedOn;
+	}
+	
+	public synchronized void setStatus(Status status, UserModel user) {
+		this.status = status;
+		stateChangedBy = user.getName();
+		stateChangedOn = new Date();
+	}
+	
+	public synchronized void reset(UserModel user, long size) {
+		status = Status.Upload_Pending;
+		stateChangedBy = user.getName();
+		stateChangedOn = new Date();
+		this.size = size;
+	}
+	
+	/*
+	 *  Handles possible race condition with concurrent connections
+	 *  @return true if action can proceed, false otherwise
+	 */
+	public synchronized boolean actionUpload(UserModel user) {
+		if (status == Status.Upload_Pending) {
+			status = Status.Upload_In_Progress;
+			stateChangedBy = user.getName();
+			stateChangedOn = new Date();
+			return true;
+		}
+		
+		return false;
+	}
+	
+	public synchronized boolean isInErrorState() {
+		return (this.status.value < 0);
+	}
+	
+	public synchronized void addRepository(String repo) {
+		if (!repositories.contains(repo)) {
+			repositories.add(repo);
+		}	
+	}
+	
+	public synchronized void removeRepository(String repo) {
+		repositories.remove(repo);
+	}
+	
+	public static enum Status {
+
+		Deleted(-30),
+		AuthenticationRequired(-20),
+		
+		Error_Unknown(-8),
+		Error_Unexpected_Stream_End(-7),
+		Error_Invalid_Oid(-6),
+		Error_Invalid_Size(-5),
+		Error_Hash_Mismatch(-4),
+		Error_Size_Mismatch(-3), 
+		Error_Exceeds_Size_Limit(-2),
+		Error_Unauthorized(-1),
+		//Negative values provide additional information and may be treated as 0 when not required
+		Unavailable(0),
+		Upload_Pending(1),
+		Upload_In_Progress(2),
+		Available(3);
+
+		final int value;
+
+		Status(int value) {
+			this.value = value;
+		}
+
+		public int getValue() {
+			return value;
+		}
+
+		@Override
+		public String toString() {
+			return name().toLowerCase().replace('_', ' ');
+		}
+
+		public static Status fromState(int state) {
+			for (Status s : values()) {
+				if (s.getValue() == state) {
+					return s;
+				}
+			}
+			throw new NoSuchElementException(String.valueOf(state));
+		}
+	}
+
+}
+