Database module

config/INSTRUCTIONS.md

@@ -0,0 +1,12 @@
+# Example for dbconfig.yaml
+
+```yaml
+user: "user"
+password: "password"
+dbname: "test"
+sslmode: "disable"
+hostname: "localhost"
+```
+We use Postgres v. 16
+
+You need to create own yaml file

database/database.go

@@ -0,0 +1,85 @@
+package database
+
+import (
+	"fmt"
+	"log"
+	"os"
+
+	"github.com/jmoiron/sqlx"
+	_ "github.com/lib/pq"
+	yaml "gopkg.in/yaml.v2"
+)
+
+type Conf struct {
+	User     string `yaml:"user"`
+	DBname   string `yaml:"dbname"`
+	SSLMode  string `yaml:"sslmode"`
+	Password string `yaml:"password"`
+	Host     string `yaml:"hostname"`
+}
+
+func LoadConfig(path string) (*Conf, error) {
+	data, err := os.ReadFile(path)
+	if err != nil {
+		return nil, err
+	}
+	var config Conf
+	err = yaml.Unmarshal(data, &config)
+	if err != nil {
+		return nil, err
+	}
+	return &config, nil
+}
+
+func CheckError(err error) bool {
+	if err != nil {
+		log.Fatalln(err)
+		return false
+	}
+	return true
+}
+
+func Test_connection() {
+	config, err := LoadConfig("config/config.yaml")
+	if err != nil {
+		log.Fatalln("Failed to load config:", err)
+	}
+	dsn := fmt.Sprintf("user=%s dbname=%s sslmode=%s password=%s host=%s",
+		config.User, config.DBname, config.SSLMode, config.Password, config.Host)
+
+	db, err := sqlx.Connect("postgres", dsn)
+	if err != nil {
+		log.Fatalln(err)
+	}
+
+	defer db.Close()
+
+	// Test the connection to the database
+	if err := db.Ping(); err != nil {
+		log.Fatal(err)
+	} else {
+		log.Println("Successfully Connected")
+	}
+}
+
+func Insert_Data(query string) bool {
+	config, err := LoadConfig("config/config.yaml")
+	if err != nil {
+		log.Fatalln("Failed to load config:", err)
+		return false
+	}
+
+	dsn := fmt.Sprintf("user=%s dbname=%s sslmode=%s password=%s host=%s",
+		config.User, config.DBname, config.SSLMode, config.Password, config.Host)
+
+	db, err := sqlx.Open("postgres", dsn)
+	if !CheckError(err) {
+		return false
+	}
+
+	defer db.Close()
+
+	_, e := db.Exec(query)
+
+	return CheckError(e)
+}

go.mod

@@ -1,3 +1,9 @@
 module market
 
 go 1.18
+
+require (
+	github.com/jmoiron/sqlx v1.4.0
+	github.com/lib/pq v1.10.9
+	gopkg.in/yaml.v2 v2.4.0
+)

go.sum

@@ -6,5 +6,13 @@ github.com/gorilla/mux v1.8.0 h1:i40aqfkR1h2SlN9hojwV5ZA91wcXFOvkdNIeFDP5koI=
 github.com/gorilla/mux v1.8.0/go.mod h1:DVbg23sWSpFRCP0SfiEN6jmj59UnW/n46BH5rLB71So=
 github.com/gorilla/mux v1.8.1 h1:TuBL49tXwgrFYWhqrNgrUNEY92u81SPhu7sTdzQEiWY=
 github.com/gorilla/mux v1.8.1/go.mod h1:AKf9I4AEqPTmMytcMc0KkNouC66V3BtZ4qD5fmWSiMQ=
+github.com/jmoiron/sqlx v1.4.0 h1:1PLqN7S1UYp5t4SrVVnt4nUVNemrDAtxlulVe+Qgm3o=
+github.com/jmoiron/sqlx v1.4.0/go.mod h1:ZrZ7UsYB/weZdl2Bxg6jCRO9c3YHl8r3ahlKmRT4JLY=
+github.com/lib/pq v1.10.9 h1:YXG7RB+JIjhP29X+OtkiDnYaXQwpS4JEWq7dtCCRUEw=
+github.com/lib/pq v1.10.9/go.mod h1:AlVN5x4E4T544tWzH6hKfbfQvm3HdbOxrmggDNAPY9o=
+github.com/mattn/go-sqlite3 v1.14.22/go.mod h1:Uh1q+B4BYcTPb+yiD3kU8Ct7aC0hY9fxUwlHK0RXw+Y=
 github.com/mattn/go-sqlite3 v1.14.24 h1:tpSp2G2KyMnnQu99ngJ47EIkWVmliIizyZBfPrBWDRM=
 github.com/mattn/go-sqlite3 v1.14.24/go.mod h1:Uh1q+B4BYcTPb+yiD3kU8Ct7aC0hY9fxUwlHK0RXw+Y=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
+gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=