From b7a18580b8fc12448475ea2d782572e4ef5f8852 Mon Sep 17 00:00:00 2001
From: yanyiwu <i@yanyiwu.com>
Date: Tue, 21 Apr 2015 01:16:23 +0800
Subject: [PATCH] Sort VolumeInfos by VolumeId in Store.Status(); Ordered
 VolumeInfos is more Human-readable, especially when there is a lot of
 volumes.

---
 go/storage/store.go       |  5 ++++-
 go/storage/volume_info.go | 21 +++++++++++++++++++++
 2 files changed, 25 insertions(+), 1 deletion(-)

diff --git a/go/storage/store.go b/go/storage/store.go
index ee65ce9e3..8228c12a2 100644
--- a/go/storage/store.go
+++ b/go/storage/store.go
@@ -223,7 +223,9 @@ func (s *Store) Status() []*VolumeInfo {
 	var stats []*VolumeInfo
 	for _, location := range s.Locations {
 		for k, v := range location.volumes {
-			s := &VolumeInfo{Id: VolumeId(k), Size: v.ContentSize(),
+			s := &VolumeInfo{
+				Id:               VolumeId(k),
+				Size:             v.ContentSize(),
 				Collection:       v.Collection,
 				ReplicaPlacement: v.ReplicaPlacement,
 				Version:          v.Version(),
@@ -235,6 +237,7 @@ func (s *Store) Status() []*VolumeInfo {
 			stats = append(stats, s)
 		}
 	}
+	sortVolumeInfos(stats)
 	return stats
 }
 
diff --git a/go/storage/volume_info.go b/go/storage/volume_info.go
index ad58fee44..a2f139c89 100644
--- a/go/storage/volume_info.go
+++ b/go/storage/volume_info.go
@@ -3,6 +3,7 @@ package storage
 import (
 	"fmt"
 	"github.com/chrislusf/seaweedfs/go/operation"
+	"sort"
 )
 
 type VolumeInfo struct {
@@ -42,3 +43,23 @@ func (vi VolumeInfo) String() string {
 	return fmt.Sprintf("Id:%d, Size:%d, ReplicaPlacement:%s, Collection:%s, Version:%v, FileCount:%d, DeleteCount:%d, DeletedByteCount:%d, ReadOnly:%v",
 		vi.Id, vi.Size, vi.ReplicaPlacement, vi.Collection, vi.Version, vi.FileCount, vi.DeleteCount, vi.DeletedByteCount, vi.ReadOnly)
 }
+
+/*VolumesInfo sorting*/
+
+type volumeInfos []*VolumeInfo
+
+func (vis volumeInfos) Len() int {
+	return len(vis)
+}
+
+func (vis volumeInfos) Less(i, j int) bool {
+	return vis[i].Id < vis[j].Id
+}
+
+func (vis volumeInfos) Swap(i, j int) {
+	vis[i], vis[j] = vis[j], vis[i]
+}
+
+func sortVolumeInfos(vis volumeInfos) {
+	sort.Sort(vis)
+}