/
database.go
89 lines (77 loc) · 3.28 KB
/
database.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
package main
import (
"database/sql"
"fmt"
_ "github.com/go-sql-driver/mysql"
"strconv"
"strings"
"time"
)
func loadDatabase(configuration *Configuration) (db *sql.DB) {
db, err := sql.Open("mysql", configuration.MySQLUser+":"+configuration.MySQLPass+"@tcp("+configuration.MySQLHost+":"+configuration.MySQLPort+")/"+configuration.MySQLDB)
if err != nil {
fmt.Println("Could not connect to database")
return
}
defer db.Close()
// Test connection with ping
err = db.Ping()
if err != nil {
fmt.Println("Ping error: " + err.Error()) // proper error handling instead of panic in your app
return
}
return
}
func saveToDB(db *sql.DB, stockList []Stock, configuration Configuration) {
db, err := sql.Open("mysql", configuration.MySQLUser+":"+configuration.MySQLPass+"@tcp("+configuration.MySQLHost+":"+configuration.MySQLPort+")/"+configuration.MySQLDB)
if err != nil {
fmt.Println("Could not connect to database")
return
}
for i := range stockList {
//@TODO Save results to database
stock := stockList[i]
// Prepare statement for inserting data
insertStatement := "INSERT INTO st_data (`symbol`, `exchange`, `name`, `change`, `close`, `percentageChange`, `open`, `high`, `low`, `volume` , `avgVolume`, `high52` , `low52`, `marketCap`, `eps`, `shares`, `time`, `minute`, `hour`, `day`, `month`, `year`) "
insertStatement += "VALUES( ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ? )"
stmtIns, err := db.Prepare(insertStatement)
if err != nil {
panic(err.Error()) // proper error handling instead of panic in your app
}
defer stmtIns.Close() // Close the statement when we leave main() / the program terminates
// Convert variables
sqlChange, _ := strconv.ParseFloat(strings.Replace(stock.Change, ",", "", -1), 64)
sqlClose, _ := strconv.ParseFloat(strings.Replace(stock.Close, ",", "", -1), 64)
sqlPercChange, _ := strconv.ParseFloat(stock.PercentageChange, 64)
sqlOpen, _ := strconv.ParseFloat(strings.Replace(stock.Open, ",", "", -1), 64)
sqlHigh, _ := strconv.ParseFloat(strings.Replace(stock.High, ",", "", -1), 64)
sqlLow, _ := strconv.ParseFloat(strings.Replace(stock.Low, ",", "", -1), 64)
sqlHigh52, _ := strconv.ParseFloat(strings.Replace(stock.High52, ",", "", -1), 64)
sqlLow52, _ := strconv.ParseFloat(strings.Replace(stock.Low52, ",", "", -1), 64)
sqlEps, _ := strconv.ParseFloat(stock.EPS, 64)
// Some contain letters that need to be converted
sqlVolume := convertLetterToDigits(stock.Volume)
sqlAvgVolume := convertLetterToDigits(stock.AverageVolume)
sqlMarketCap := convertLetterToDigits(stock.MarketCap)
sqlShares := convertLetterToDigits(stock.Shares)
t := time.Now()
utc, err := time.LoadLocation(configuration.TimeZone)
if err != nil {
fmt.Println("err: ", err.Error())
}
sqlTime := int32(t.Unix())
sqlMinute := t.In(utc).Minute()
sqlHour := t.In(utc).Hour()
sqlDay := t.In(utc).Day()
sqlMonth := t.In(utc).Month()
sqlYear := t.In(utc).Year()
_, err = stmtIns.Exec(stock.Symbol, stock.Exchange, stock.Name, sqlChange, sqlClose,
sqlPercChange, sqlOpen, sqlHigh, sqlLow, sqlVolume, sqlAvgVolume,
sqlHigh52, sqlLow52, sqlMarketCap, sqlEps, sqlShares,
sqlTime, sqlMinute, sqlHour, sqlDay, sqlMonth, sqlYear)
if err != nil {
fmt.Println("Could not save results: " + err.Error())
}
}
defer db.Close()
}