Merge pull request #365 from mattermost/mm-1700

MM-1700 don't pull all channel data all the time

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
+	}
+}

model/channel_data.go

@@ -0,0 +1,43 @@
+// Copyright (c) 2015 Spinpunch, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"encoding/json"
+	"io"
+)
+
+type ChannelData struct {
+	Channel *Channel       `json:"channel"`
+	Member  *ChannelMember `json:"member"`
+}
+
+func (o *ChannelData) Etag() string {
+	var mt int64 = 0
+	if o.Member != nil {
+		mt = o.Member.LastUpdateAt
+	}
+
+	return Etag(o.Channel.Id, o.Channel.UpdateAt, o.Channel.LastPostAt, mt)
+}
+
+func (o *ChannelData) ToJson() string {
+	b, err := json.Marshal(o)
+	if err != nil {
+		return ""
+	} else {
+		return string(b)
+	}
+}
+
+func ChannelDataFromJson(data io.Reader) *ChannelData {
+	decoder := json.NewDecoder(data)
+	var o ChannelData
+	err := decoder.Decode(&o)
+	if err == nil {
+		return &o
+	} else {
+		return nil
+	}
+}

model/client.go

@@ -390,6 +390,15 @@ func (c *Client) GetChannels(etag string) (*Result, *AppError) {
 	}
 }
 
+func (c *Client) GetChannel(id, etag string) (*Result, *AppError) {
+	if r, err := c.DoGet("/channels/"+id+"/", "", etag); err != nil {
+		return nil, err
+	} else {
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), ChannelDataFromJson(r.Body)}, nil
+	}
+}
+
 func (c *Client) GetMoreChannels(etag string) (*Result, *AppError) {
 	if r, err := c.DoGet("/channels/more", "", etag); err != nil {
 		return nil, err
@@ -399,6 +408,15 @@ func (c *Client) GetMoreChannels(etag string) (*Result, *AppError) {
 	}
 }
 
+func (c *Client) GetChannelCounts(etag string) (*Result, *AppError) {
+	if r, err := c.DoGet("/channels/counts", "", etag); err != nil {
+		return nil, err
+	} else {
+		return &Result{r.Header.Get(HEADER_REQUEST_ID),
+			r.Header.Get(HEADER_ETAG_SERVER), ChannelCountsFromJson(r.Body)}, nil
+	}
+}
+
 func (c *Client) JoinChannel(id string) (*Result, *AppError) {
 	if r, err := c.DoPost("/channels/"+id+"/join", ""); err != nil {
 		return nil, err