diff options
Diffstat (limited to 'model/channel_count.go')
-rw-r--r-- | model/channel_count.go | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/model/channel_count.go b/model/channel_count.go new file mode 100644 index 000000000..d5daba14e --- /dev/null +++ b/model/channel_count.go @@ -0,0 +1,63 @@ +// Copyright (c) 2015 Spinpunch, Inc. All Rights Reserved. +// See License.txt for license information. + +package model + +import ( + "crypto/md5" + "encoding/json" + "fmt" + "io" + "sort" + "strconv" +) + +type ChannelCounts struct { + Counts map[string]int64 `json:"counts"` + UpdateTimes map[string]int64 `json:"update_times"` +} + +func (o *ChannelCounts) Etag() string { + + ids := []string{} + for id, _ := range o.Counts { + ids = append(ids, id) + } + sort.Strings(ids) + + str := "" + for _, id := range ids { + str += id + strconv.FormatInt(o.Counts[id], 10) + } + + md5Counts := fmt.Sprintf("%x", md5.Sum([]byte(str))) + + var update int64 = 0 + for _, u := range o.UpdateTimes { + if u > update { + update = u + } + } + + return Etag(md5Counts, update) +} + +func (o *ChannelCounts) ToJson() string { + b, err := json.Marshal(o) + if err != nil { + return "" + } else { + return string(b) + } +} + +func ChannelCountsFromJson(data io.Reader) *ChannelCounts { + decoder := json.NewDecoder(data) + var o ChannelCounts + err := decoder.Decode(&o) + if err == nil { + return &o + } else { + return nil + } +} |