forked from stellar/go
/
actions_payment.go
135 lines (116 loc) · 3.47 KB
/
actions_payment.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
package horizon
import (
"errors"
"fmt"
"github.com/stellar/go/services/horizon/internal/db2"
"github.com/stellar/go/services/horizon/internal/db2/history"
"github.com/stellar/go/services/horizon/internal/render/sse"
"github.com/stellar/go/services/horizon/internal/resourceadapter"
"github.com/stellar/go/support/render/hal"
)
// PaymentsIndexAction returns a paged slice of payments based upon the provided
// filters
type PaymentsIndexAction struct {
Action
LedgerFilter int32
AccountFilter string
TransactionFilter string
PagingParams db2.PageQuery
Records []history.Operation
Ledgers history.LedgerCache
Page hal.Page
}
// JSON is a method for actions.JSON
func (action *PaymentsIndexAction) JSON() {
action.Do(
action.EnsureHistoryFreshness,
action.loadParams,
action.ValidateCursorWithinHistory,
action.loadRecords,
action.loadLedgers,
action.loadPage,
)
action.Do(func() {
hal.Render(action.W, action.Page)
})
}
// SSE is a method for actions.SSE
func (action *PaymentsIndexAction) SSE(stream sse.Stream) {
action.Setup(
action.EnsureHistoryFreshness,
action.loadParams,
action.ValidateCursorWithinHistory,
)
action.Do(
action.loadRecords,
action.loadLedgers,
func() {
stream.SetLimit(int(action.PagingParams.Limit))
records := action.Records[stream.SentCount():]
for _, record := range records {
ledger, found := action.Ledgers.Records[record.LedgerSequence()]
if !found {
msg := fmt.Sprintf("could not find ledger data for sequence %d", record.LedgerSequence())
action.Err = errors.New(msg)
return
}
res, err := resourceadapter.NewOperation(action.R.Context(), record, ledger)
if err != nil {
action.Err = err
return
}
stream.Send(sse.Event{
ID: res.PagingToken(),
Data: res,
})
}
})
}
func (action *PaymentsIndexAction) loadParams() {
action.ValidateCursorAsDefault()
action.AccountFilter = action.GetString("account_id")
action.LedgerFilter = action.GetInt32("ledger_id")
action.TransactionFilter = action.GetString("tx_id")
action.PagingParams = action.GetPageQuery()
}
func (action *PaymentsIndexAction) loadRecords() {
q := action.HistoryQ()
ops := q.Operations().OnlyPayments()
switch {
case action.AccountFilter != "":
ops.ForAccount(action.AccountFilter)
case action.LedgerFilter > 0:
ops.ForLedger(action.LedgerFilter)
case action.TransactionFilter != "":
ops.ForTransaction(action.TransactionFilter)
}
action.Err = ops.Page(action.PagingParams).Select(&action.Records)
}
// loadLedgers populates the ledger cache for this action
func (action *PaymentsIndexAction) loadLedgers() {
for _, op := range action.Records {
action.Ledgers.Queue(op.LedgerSequence())
}
action.Err = action.Ledgers.Load(action.HistoryQ())
}
func (action *PaymentsIndexAction) loadPage() {
for _, record := range action.Records {
var res hal.Pageable
ledger, found := action.Ledgers.Records[record.LedgerSequence()]
if !found {
msg := fmt.Sprintf("could not find ledger data for sequence %d", record.LedgerSequence())
action.Err = errors.New(msg)
return
}
res, action.Err = resourceadapter.NewOperation(action.R.Context(), record, ledger)
if action.Err != nil {
return
}
action.Page.Add(res)
}
action.Page.FullURL = action.FullURL()
action.Page.Limit = action.PagingParams.Limit
action.Page.Cursor = action.PagingParams.Cursor
action.Page.Order = action.PagingParams.Order
action.Page.PopulateLinks()
}