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package config
import (
"errors"
"fmt"
"os"
"strings"
"github.com/BurntSushi/toml"
"gitlab.com/gitlab-org/gitaly/internal/config/auth"
"gitlab.com/gitlab-org/gitaly/internal/config/log"
"gitlab.com/gitlab-org/gitaly/internal/config/prometheus"
"gitlab.com/gitlab-org/gitaly/internal/config/sentry"
"gitlab.com/gitlab-org/gitaly/internal/praefect/models"
)
// Config is a container for everything found in the TOML config file
type Config struct {
ListenAddr string `toml:"listen_addr"`
SocketPath string `toml:"socket_path"`
VirtualStorages []*VirtualStorage `toml:"virtual_storage"`
//TODO: Remove VirtualStorageName and Nodes once omnibus and gdk are updated with support for
// VirtualStorages
VirtualStorageName string `toml:"virtual_storage_name"`
Nodes []*models.Node `toml:"node"`
Logging log.Config `toml:"logging"`
Sentry sentry.Config `toml:"sentry"`
PrometheusListenAddr string `toml:"prometheus_listen_addr"`
Prometheus prometheus.Config `toml:"prometheus"`
Auth auth.Config `toml:"auth"`
DB `toml:"database"`
FailoverEnabled bool `toml:"failover_enabled"`
ElectionStrategy string `toml:"election_strategy"`
}
// VirtualStorage represents a set of nodes for a storage
type VirtualStorage struct {
Name string `toml:"name"`
Nodes []*models.Node `toml:"node"`
}
// FromFile loads the config for the passed file path
func FromFile(filePath string) (Config, error) {
config := &Config{}
cfgFile, err := os.Open(filePath)
if err != nil {
return *config, err
}
defer cfgFile.Close()
_, err = toml.DecodeReader(cfgFile, config)
// TODO: Remove this after the virtual storages change is merged in omnibus
// and gdk. This is for backwards compatibility purposes only
if len(config.VirtualStorages) == 0 && config.VirtualStorageName != "" && len(config.Nodes) > 0 {
config.VirtualStorages = []*VirtualStorage{
&VirtualStorage{
Name: config.VirtualStorageName,
Nodes: config.Nodes,
},
}
config.VirtualStorageName = ""
config.Nodes = nil
}
return *config, err
}
var (
errDuplicateStorage = errors.New("internal gitaly storages are not unique")
errGitalyWithoutAddr = errors.New("all gitaly nodes must have an address")
errGitalyWithoutStorage = errors.New("all gitaly nodes must have a storage")
errMoreThanOnePrimary = errors.New("only 1 node can be designated as a primary")
errNoGitalyServers = errors.New("no primary gitaly backends configured")
errNoListener = errors.New("no listen address or socket path configured")
errNoPrimaries = errors.New("no primaries designated")
errNoVirtualStorages = errors.New("no virtual storages configured")
errStorageAddressMismatch = errors.New("storages with the same name must have the same address")
errVirtualStoragesNotUnique = errors.New("virtual storages must have unique names")
)
// Validate establishes if the config is valid
func (c Config) Validate() error {
if c.ListenAddr == "" && c.SocketPath == "" {
return errNoListener
}
if len(c.VirtualStorages) == 0 {
return errNoVirtualStorages
}
allStorages := make(map[string]string)
virtualStorages := make(map[string]struct{})
for _, virtualStorage := range c.VirtualStorages {
if _, ok := virtualStorages[virtualStorage.Name]; ok {
return errVirtualStoragesNotUnique
}
virtualStorages[virtualStorage.Name] = struct{}{}
storages := make(map[string]struct{})
var primaries int
for _, node := range virtualStorage.Nodes {
if node.DefaultPrimary {
primaries++
}
if primaries > 1 {
return fmt.Errorf("virtual storage %s: %v", virtualStorage.Name, errMoreThanOnePrimary)
}
if node.Storage == "" {
return errGitalyWithoutStorage
}
if node.Address == "" {
return errGitalyWithoutAddr
}
if _, found := storages[node.Storage]; found {
return errDuplicateStorage
}
if address, found := allStorages[node.Storage]; found {
if address != node.Address {
return errStorageAddressMismatch
}
} else {
allStorages[node.Storage] = node.Address
}
storages[node.Storage] = struct{}{}
}
if primaries == 0 {
return fmt.Errorf("virtual storage %s: %v", virtualStorage.Name, errNoPrimaries)
}
if len(storages) == 0 {
return fmt.Errorf("virtual storage %s: %v", virtualStorage.Name, errNoGitalyServers)
}
}
return nil
}
// DB holds Postgres client configuration data.
type DB struct {
Host string `toml:"host"`
Port int `toml:"port"`
User string `toml:"user"`
Password string `toml:"password"`
DBName string `toml:"dbname"`
SSLMode string `toml:"sslmode"`
SSLCert string `toml:"sslcert"`
SSLKey string `toml:"sslkey"`
SSLRootCert string `toml:"sslrootcert"`
}
// ToPQString returns a connection string that can be passed to github.com/lib/pq.
func (db DB) ToPQString() string {
var fields []string
if db.Port > 0 {
fields = append(fields, fmt.Sprintf("port=%d", db.Port))
}
for _, kv := range []struct{ key, value string }{
{"host", db.Host},
{"user", db.User},
{"password", db.Password},
{"dbname", db.DBName},
{"sslmode", db.SSLMode},
{"sslcert", db.SSLCert},
{"sslkey", db.SSLKey},
{"sslrootcert", db.SSLRootCert},
} {
if len(kv.value) == 0 {
continue
}
kv.value = strings.ReplaceAll(kv.value, "'", `\'`)
kv.value = strings.ReplaceAll(kv.value, " ", `\ `)
fields = append(fields, kv.key+"="+kv.value)
}
return strings.Join(fields, " ")
}
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