-
Notifications
You must be signed in to change notification settings - Fork 5
/
dashboard.go
137 lines (127 loc) Β· 3.11 KB
/
dashboard.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
package main
import (
"context"
"fmt"
"html/template"
"log"
"net/http"
"runtime"
"sync"
"time"
"go.mongodb.org/mongo-driver/bson"
"go.mongodb.org/mongo-driver/bson/primitive"
"go.mongodb.org/mongo-driver/mongo"
"go.mongodb.org/mongo-driver/mongo/options"
"golang.org/x/sync/errgroup"
)
// dashboard returns a simple dashboard view to view all existing statistics.
func dashboard(w http.ResponseWriter, r *http.Request) {
var err error
defer func() {
if err == nil {
return
}
http.Error(w, fmt.Sprintf("bad request: %v", err), http.StatusBadRequest)
}()
wait := 60 * time.Second
ctx, cancel := context.WithTimeout(r.Context(), wait)
defer cancel()
cols, err := db.Database(dbname).ListCollectionNames(ctx, bson.D{})
if err != nil {
err = fmt.Errorf("failed to list collections: %w", err)
return
}
type record struct {
Path string `bson:"_id"`
PV int64 `bson:"pv"`
UV int64 `bson:"uv"`
}
type records struct {
Host string
Records []record
}
all := make([]records, 0, len(cols))
mu := sync.Mutex{}
g, ctx := errgroup.WithContext(ctx)
g.SetLimit(runtime.NumCPU())
for _, hostname := range cols {
hostname := hostname
g.Go(func() error {
start := time.Now()
defer func() {
log.Printf("running for host %v took %v", hostname, time.Since(start))
}()
col := db.Database(dbname).Collection(hostname)
// mongodb query:
//
// db.getCollection('golang.design').aggregate([
// {"$group": {
// _id: {path: "$path", ip:"$ip"},
// count: {"$sum": 1}}
// },
// {"$group": {
// _id: "$_id.path",
// uv: {$sum: 1},
// pv: {$sum: "$count"}}
// },
// {"$sort": {'pv': -1, 'uv': -1}}], { allowDiskUse: true })
//
// TODO: currently golang.design is the slowest query and should
// be further optimized. Maybe batched queries?
p := mongo.Pipeline{
bson.D{
primitive.E{
Key: "$group", Value: bson.M{
"_id": bson.M{"path": "$path", "ip": "$ip"},
"count": bson.M{"$sum": 1},
},
},
},
bson.D{
primitive.E{
Key: "$group", Value: bson.M{
"_id": "$_id.path",
"uv": bson.M{"$sum": 1},
"pv": bson.M{"$sum": "$count"},
},
},
},
bson.D{
primitive.E{Key: "$sort", Value: bson.M{"pv": -1, "uv": -1}},
},
}
opts := options.Aggregate().SetMaxTime(wait).SetAllowDiskUse(true)
var cur *mongo.Cursor
cur, err = col.Aggregate(ctx, p, opts)
if err != nil {
err = fmt.Errorf("failed to count visit: %w", err)
return err
}
var results []record
err = cur.All(ctx, &results)
if err != nil {
err = fmt.Errorf("failed to count visit: %w", err)
return err
}
mu.Lock()
all = append(all, records{
Host: hostname,
Records: results,
})
mu.Unlock()
return nil
})
}
if err = g.Wait(); err != nil {
return
}
t, err := template.ParseFS(publicFS, "dashboard.html")
if err != nil {
err = fmt.Errorf("failed to parse dashboard.html: %w", err)
return
}
err = t.Execute(w, struct{ All []records }{all})
if err != nil {
err = fmt.Errorf("failed to render template: %w", err)
}
}