docker-db-backup/dump_postgres.go

50 lines
1.0 KiB
Go

package main
import (
"fmt"
"github.com/docker/docker/api/types"
)
type PostgresDumper struct {
Container *types.ContainerJSON
}
func NewPostgresDumper(container *types.ContainerJSON) *PostgresDumper {
return &PostgresDumper{
Container: container,
}
}
func (d *PostgresDumper) Dump() error {
fmt.Printf("Dumping postgres database from container %s...\n", d.Container.Name)
env := parseEnv(d.Container.Config.Env)
user := "root"
if u, has := env["POSTGRES_USER"]; has {
user = u
}
db := ""
if d, has := env["POSTGRES_DB"]; has {
db = d
}
pw := env["POSTGRES_ROOT_PASSWORD"]
if p, has := env["POSTGRES_PASSWORD"]; has {
pw = p
}
port := "5432"
if p, has := env["POSTGRES_PORT"]; has {
port = p
}
host := d.Container.NetworkSettings.DefaultNetworkSettings.IPAddress
connStr := fmt.Sprintf("postgresql://%s:%s@%s:%s/%s", user, pw, host, port, db)
// TODO: Check postgres image version and use the correct pg_dump --> Test!
return runAndSaveCommand(getDumpFilename(d.Container.Name), "pg_dump", "--dbname", connStr)
}