From a502d96a860456ec5e8c96761db70f7cabb74751 Mon Sep 17 00:00:00 2001
From: Paul Martin <paul@paulsputer.com>
Date: Sat, 30 Apr 2016 04:19:14 -0400
Subject: [PATCH] Merge pull request #1073 from gitblit/1062-DocEditorUpdates
---
src/main/java/com/gitblit/models/FilestoreModel.java | 226 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 226 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 0000000..40b51e0
--- /dev/null
+++ b/src/main/java/com/gitblit/models/FilestoreModel.java
@@ -0,0 +1,226 @@
+/*
+ * 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;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import com.gitblit.Constants;
+
+/**
+ * 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, Comparable<FilestoreModel> {
+
+ private static final long serialVersionUID = 1L;
+
+ private static final String metaRegexText = new StringBuilder()
+ .append("version\\shttps://git-lfs.github.com/spec/v1\\s+")
+ .append("oid\\ssha256:(" + Constants.REGEX_SHA256 + ")\\s+")
+ .append("size\\s([0-9]+)")
+ .toString();
+
+ private static final Pattern metaRegex = Pattern.compile(metaRegexText);
+
+ private static final int metaRegexIndexSHA = 1;
+
+ private static final int metaRegexIndexSize = 2;
+
+ 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 definedSize) {
+ oid = id;
+ size = definedSize;
+ status = Status.ReferenceOnly;
+ }
+
+ 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);
+ }
+
+ /*
+ * Attempts to create a FilestoreModel from the given meta string
+ *
+ * @return A valid FilestoreModel if successful, otherwise null
+ */
+ public static FilestoreModel fromMetaString(String meta) {
+
+ Matcher m = metaRegex.matcher(meta);
+
+ if (m.find()) {
+ try
+ {
+ final Long size = Long.parseLong(m.group(metaRegexIndexSize));
+ final String sha = m.group(metaRegexIndexSHA);
+ return new FilestoreModel(sha, size);
+ } catch (Exception e) {
+ //Fail silent - it is not a valid filestore item
+ }
+ }
+
+ return null;
+ }
+
+ 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 (status != Status.ReferenceOnly) {
+ if (!repositories.contains(repo)) {
+ repositories.add(repo);
+ }
+ }
+ }
+
+ public synchronized void removeRepository(String repo) {
+ if (status != Status.ReferenceOnly) {
+ repositories.remove(repo);
+ }
+ }
+
+ public synchronized boolean isInRepositoryList(List<String> repoList) {
+ if (status != Status.ReferenceOnly) {
+ for (String name : repositories) {
+ if (repoList.contains(name)) {
+ return true;
+ }
+ }
+ }
+ return false;
+ }
+
+ public static enum Status {
+
+ ReferenceOnly(-42),
+
+ 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));
+ }
+ }
+
+ @Override
+ public int compareTo(FilestoreModel o) {
+ return this.oid.compareTo(o.oid);
+ }
+
+}
+
--
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