/
main.go
133 lines (116 loc) · 2.85 KB
/
main.go
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package main
import (
"errors"
"fmt"
"github.com/adebayohountondji/aws-rds-dump/internal"
"os"
"strconv"
"strings"
"time"
)
const (
databaseDriverMysql = "mysql"
databaseDriverPostgres = "postgres"
defaultDumpFilenamePattern = "{yyyy}{MM}{dd}-{hh}{mm}{ss}"
)
func main() {
err := tryToDump()
if err != nil {
fmt.Println(err.Error())
os.Exit(1)
}
fmt.Println("aws-rds-dump: main: command executed successfully")
os.Exit(0)
}
type rds interface {
Dump(outPutFile *os.File) (err error)
}
func tryToDump() (err error) {
rds, err := createRdsFromOsEnv()
if err != nil {
return err
}
tmpDumpFile, err := os.CreateTemp("", "aws-rds-dump-")
if err != nil {
return err
}
defer func(filename string) {
_ = os.Remove(filename)
}(tmpDumpFile.Name())
err = rds.Dump(tmpDumpFile)
if err != nil {
return err
}
tmpGzipDumpFile, err := os.CreateTemp("", "aws-rds-dump-")
if err != nil {
return err
}
defer func(filename string) {
_ = os.Remove(filename)
}(tmpGzipDumpFile.Name())
err = internal.CreateGzipFile(tmpDumpFile.Name(), tmpGzipDumpFile.Name())
if err != nil {
return err
}
aws, err := createAwsFromOsEnv()
if err != nil {
return err
}
dumpFilenamePattern := os.Getenv("DUMP_FILENAME_PATTERN")
if dumpFilenamePattern == "" {
dumpFilenamePattern = defaultDumpFilenamePattern
}
s3 := aws.NewS3(os.Getenv("AWS_S3_BUCKET_NAME"))
err = s3.PutObject(
internal.CreateDumpFilenameFromPatternAndDate(
fmt.Sprintf("%s.gz", dumpFilenamePattern),
time.Now(),
),
tmpGzipDumpFile,
)
return err
}
func createRdsFromOsEnv() (rds rds, err error) {
switch os.Getenv("DATABASE_DRIVER") {
case databaseDriverMysql:
port, _ := strconv.Atoi(os.Getenv("MYSQL_PORT"))
rds = internal.NewMysql(
os.Getenv("MYSQL_HOST"),
uint16(port),
os.Getenv("MYSQL_USER"),
os.Getenv("MYSQL_PASSWORD"),
os.Getenv("MYSQL_DATABASE"),
os.Getenv("MYSQLDUMP_EXECUTABLE"),
internal.FindAllCommandOptionsFromString(os.Getenv("MYSQLDUMP_OPTIONS")),
)
case databaseDriverPostgres:
port, _ := strconv.Atoi(os.Getenv("POSTGRES_PORT"))
rds = internal.NewPostgres(
os.Getenv("POSTGRES_HOST"),
uint16(port),
os.Getenv("POSTGRES_USER"),
os.Getenv("POSTGRES_PASSWORD"),
os.Getenv("POSTGRES_DATABASE"),
os.Getenv("PG_DUMP_EXECUTABLE"),
internal.FindAllCommandOptionsFromString(os.Getenv("PG_DUMP_OPTIONS")),
)
default:
err = errors.New(
fmt.Sprintf(
"%s is not a valid rds driver. Available values are: %s\n",
os.Getenv("DATABASE_DRIVER"),
strings.Join([]string{databaseDriverMysql, databaseDriverPostgres}, ", "),
),
)
}
return rds, err
}
func createAwsFromOsEnv() (internal.Aws, error) {
return internal.NewAws(
internal.AwsConfig{
AccessKeyId: os.Getenv("AWS_ACCESS_KEY_ID"),
SecretAccessKey: os.Getenv("AWS_SECRET_ACCESS_KEY"),
Region: os.Getenv("AWS_REGION"),
},
)
}