-
Notifications
You must be signed in to change notification settings - Fork 12
/
paystats.go
159 lines (138 loc) · 4 KB
/
paystats.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
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
package clientdb
import (
"encoding/json"
"os"
"path/filepath"
"sort"
"strings"
"time"
)
// RecordUserPayEvent records the given amount as a payment event. If amount is
// < 0, then this means a payment was made related to this user. If amount > 0
// this means a payment was received from this user.
//
// The amount is recorded in Milli-atoms.
func (db *DB) RecordUserPayEvent(tx ReadWriteTx, user UserID, event string, amount, payFee int64) error {
fname := filepath.Join(db.root, inboundDir, user.String(), payStatsFile)
evnt := PayStatEvent{
Timestamp: time.Now().Unix(),
Event: event,
Amount: amount,
PayFee: payFee,
}
if err := db.appendToJsonFile(fname, evnt); err != nil {
return err
}
uid := user.String()
userStats := db.payStats[uid]
if amount < 0 {
userStats.TotalSent += -amount
} else {
userStats.TotalReceived += amount
}
userStats.TotalPayFee += -payFee
db.payStats[uid] = userStats
statsFname := filepath.Join(db.root, payStatsFile)
return db.saveJsonFile(statsFname, &db.payStats)
}
// ListPayStats lists the global (per-user) payment stats.
func (db *DB) ListPayStats(tx ReadTx) (map[UserID]UserPayStats, error) {
res := make(map[UserID]UserPayStats, len(db.payStats))
for sid, stats := range db.payStats {
var id UserID
if err := id.FromString(sid); err != nil {
db.log.Warnf("Not a valid user ID while listing pay stats: %s", sid)
continue
}
res[id] = stats
}
return res, nil
}
// SummarizeUserPayStats returns a summary of the payments recorded for the
// given user. These are grouped by the first level.
func (db *DB) SummarizeUserPayStats(tx ReadTx, uid UserID) ([]PayStatsSummary, error) {
fname := filepath.Join(db.root, inboundDir, uid.String(), payStatsFile)
f, err := os.Open(fname)
if os.IsNotExist(err) {
// No stats.
return nil, nil
} else if err != nil {
return nil, err
}
defer f.Close()
feeTotal := PayStatsSummary{Prefix: "payfees"}
dec := json.NewDecoder(f)
var evnt PayStatEvent
aux := make(map[string]*PayStatsSummary)
for err := dec.Decode(&evnt); err == nil; err = dec.Decode(&evnt) {
prefix := evnt.Event
if p := strings.Index(prefix, "."); p > -1 {
prefix = prefix[:p]
}
stats, ok := aux[prefix]
if !ok {
stats = &PayStatsSummary{Prefix: prefix}
aux[prefix] = stats
}
stats.Total += evnt.Amount
feeTotal.Total += evnt.PayFee
}
res := make([]PayStatsSummary, len(aux)+1)
i := 0
for _, s := range aux {
res[i] = *s
i += 1
}
// Add fees last.
res[len(res)-1] = feeTotal
// Sort result so that positive values come first (sorted in descending
// order) and negative values come next (in ascending order)
sort.Slice(res, func(i, j int) bool {
if res[i].Total > 0 && res[i].Total < 0 {
return true
}
if res[i].Total < 0 && res[j].Total > 0 {
return false
}
if res[i].Total < 0 {
return res[i].Total < res[j].Total
}
return res[i].Total > res[j].Total
})
return res, nil
}
// ClearPayStats removes pay stats for the given user or for all users if user
// equals nil.
func (db *DB) ClearPayStats(tx ReadWriteTx, user *UserID) error {
if user == nil {
// Remove stats summary file.
statsFname := filepath.Join(db.root, payStatsFile)
if err := os.Remove(statsFname); err != nil && !os.IsNotExist(err) {
return err
}
db.payStats = make(map[string]UserPayStats)
// Remove all individual stats files.
pattern := filepath.Join(db.root, inboundDir, "*", payStatsFile)
files, err := filepath.Glob(pattern)
if err != nil {
return err
}
for _, f := range files {
if err := os.Remove(f); err != nil {
db.log.Warnf("Unable to remove pay stat file %s: %v", f, err)
}
}
return nil
}
// Remove a specific user stats.
delete(db.payStats, user.String())
statsFname := filepath.Join(db.root, payStatsFile)
if err := db.saveJsonFile(statsFname, &db.payStats); err != nil {
return err
}
statsFname = filepath.Join(db.root, inboundDir, user.String(), payStatsFile)
if err := os.Remove(statsFname); err != nil && !os.IsNotExist(err) {
return err
}
return nil
}