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Merge pull request #26 from Nsttt/add-mysql
Add Mysql support
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,12 +1,6 @@ | ||
| S3_ENDPOINT= | ||
| S3_BUCKET=postgres-backups | ||
| S3_ACCESS_KEY= | ||
| S3_SECRET_KEY= | ||
|
|
||
| POSTGRES_HOST=postgres | ||
| POSTGRES_PORT=5432 | ||
| POSTGRES_USER=postgres | ||
| POSTGRES_PASSWORD=postgres | ||
| POSTGRES_DB=postgres | ||
|
|
||
| EVERY=24h | ||
| URLS="postgres://user:password@host:port/dbname,mysql://user:password@host:port/dbname" | ||
| S3_ENDPOINT="your_s3_endpoint" | ||
| S3_BUCKET="your_s3_bucket" | ||
| S3_ACCESS_KEY="your_s3_access_key" | ||
| S3_SECRET_KEY="your_s3_secret_key" | ||
| INTERVAL="24h" |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,118 @@ | ||
| package main | ||
|
|
||
| import ( | ||
| "bufio" | ||
| "errors" | ||
| "fmt" | ||
| "os/exec" | ||
| "strconv" | ||
| "time" | ||
| ) | ||
|
|
||
| type connectionOptions struct { | ||
| Host string | ||
| DbType string | ||
| Port int | ||
| Database string | ||
| Username string | ||
| Password string | ||
| } | ||
|
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||
| var ( | ||
| PGDumpCmd = "pg_dump" | ||
| pgDumpStdOpts = []string{"--no-owner", "--no-acl", "--clean", "--blobs", "-v"} | ||
| pgDumpDefaultFormat = "c" | ||
| ErrPgDumpNotFound = errors.New("pg_dump not found") | ||
|
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| MysqlDumpCmd = "mysqldump" | ||
| mysqlDumpStdOpts = []string{"--compact", "--skip-add-drop-table", "--skip-add-locks", "--skip-disable-keys", "--skip-set-charset", "-v"} | ||
| ErrMySqlDumpNotFound = errors.New("mysqldump not found") | ||
|
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| ErrUnsupportedType = errors.New("unsupported database type") | ||
| ) | ||
|
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| func RunDump(connectionOpts *connectionOptions, outFile string) error { | ||
| cmd, err := buildDumpCommand(connectionOpts, outFile) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
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| return executeCommand(cmd) | ||
| } | ||
|
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| func buildDumpCommand(opts *connectionOptions, outFile string) (*exec.Cmd, error) { | ||
| switch opts.DbType { | ||
| case "postgres": | ||
| if !commandExist(PGDumpCmd) { | ||
| return nil, ErrPgDumpNotFound | ||
| } | ||
| options := append( | ||
| pgDumpStdOpts, | ||
| fmt.Sprintf("-f%s", outFile), | ||
| fmt.Sprintf("--dbname=%s", opts.Database), | ||
| fmt.Sprintf("--host=%s", opts.Host), | ||
| fmt.Sprintf("--port=%d", opts.Port), | ||
| fmt.Sprintf("--username=%s", opts.Username), | ||
| fmt.Sprintf("--format=%s", pgDumpDefaultFormat), | ||
| ) | ||
| return exec.Command(PGDumpCmd, options...), nil | ||
|
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||
| case "mysql": | ||
| mysqldumpCmd := "mysqldump" | ||
| if !commandExist(mysqldumpCmd) { | ||
| return nil, ErrMySqlDumpNotFound | ||
| } | ||
| options := append( | ||
| mysqlDumpStdOpts, | ||
| "-h", opts.Host, | ||
| "-P", strconv.Itoa(opts.Port), | ||
| "-u", opts.Username, | ||
| fmt.Sprintf("--password=%s", opts.Password), | ||
| "--databases", opts.Database, | ||
| "-r", outFile, | ||
| ) | ||
|
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| return exec.Command(mysqldumpCmd, options...), nil | ||
|
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| default: | ||
| return nil, ErrUnsupportedType | ||
| } | ||
| } | ||
|
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| func executeCommand(cmd *exec.Cmd) error { | ||
| stderr, err := cmd.StderrPipe() | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| if err := cmd.Start(); err != nil { | ||
| return err | ||
| } | ||
|
|
||
| go func() { | ||
| scanner := bufio.NewScanner(stderr) | ||
| for scanner.Scan() { | ||
| fmt.Println(scanner.Text()) | ||
| } | ||
| }() | ||
|
|
||
| if err := cmd.Wait(); err != nil { | ||
| return err | ||
| } | ||
| return nil | ||
| } | ||
|
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||
| func commandExist(command string) bool { | ||
| _, err := exec.LookPath(command) | ||
| return err == nil | ||
| } | ||
|
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| func newFileName(db string, dbType string) string { | ||
| switch dbType { | ||
| case "postgres": | ||
| return fmt.Sprintf(`%v_%v.pgdump`, db, time.Now().Unix()) | ||
| case "mysql": | ||
| return fmt.Sprintf(`%v_%v.sql`, db, time.Now().Unix()) | ||
| } | ||
| return fmt.Sprintf(`%v_%v`, db, time.Now().Unix()) | ||
| } |
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