chore: use yaml-to-json library, giving better support for configuring third-party libs like libdns providers

go.mod

@@ -7,7 +7,6 @@ require (
 	github.com/a-h/templ v0.2.663
 	github.com/apparentlymart/go-cidr v1.1.0
 	github.com/bufbuild/connect-go v1.10.0
-	github.com/caarlos0/env/v6 v6.10.1
 	github.com/caddyserver/certmagic v0.20.0
 	github.com/coreos/go-oidc/v3 v3.10.0
 	github.com/dustinkirkland/golang-petname v0.0.0-20240422154211-76c06c4bde6b
@@ -18,7 +17,6 @@ require (
 	github.com/hashicorp/go-bexpr v0.1.14
 	github.com/hashicorp/go-getter v1.7.4
 	github.com/hashicorp/go-multierror v1.1.1
-	github.com/imdario/mergo v0.3.16
 	github.com/jsiebens/go-edit v0.1.0
 	github.com/jsiebens/mockoidc v0.1.0-rc2
 	github.com/klauspost/compress v1.17.11
@@ -36,6 +34,7 @@ require (
 	github.com/nleeper/goment v1.4.4
 	github.com/ory/dockertest/v3 v3.10.0
 	github.com/prometheus/client_golang v1.19.1
+	github.com/puzpuzpuz/xsync/v3 v3.5.1
 	github.com/rodaine/table v1.2.0
 	github.com/sony/sonyflake v1.2.0
 	github.com/spf13/cobra v1.8.1
@@ -55,6 +54,7 @@ require (
 	gorm.io/gorm v1.25.9
 	gorm.io/plugin/prometheus v0.1.0
 	inet.af/netaddr v0.0.0-20230525184311-b8eac61e914a
+	sigs.k8s.io/yaml v1.4.0
 	tailscale.com v1.80.0
 )
 
@@ -191,7 +191,6 @@ require (
 	github.com/prometheus/client_model v0.6.1 // indirect
 	github.com/prometheus/common v0.55.0 // indirect
 	github.com/prometheus/procfs v0.15.1 // indirect
-	github.com/puzpuzpuz/xsync/v3 v3.5.1 // indirect
 	github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec // indirect
 	github.com/safchain/ethtool v0.3.0 // indirect
 	github.com/sirupsen/logrus v1.9.3 // indirect

go.sum

@@ -295,8 +295,6 @@ github.com/bits-and-blooms/bitset v1.13.0 h1:bAQ9OPNFYbGHV6Nez0tmNI0RiEu7/hxlYJR
 github.com/bits-and-blooms/bitset v1.13.0/go.mod h1:7hO7Gc7Pp1vODcmWvKMRA9BNmbv6a/7QIWpPxHddWR8=
 github.com/bufbuild/connect-go v1.10.0 h1:QAJ3G9A1OYQW2Jbk3DeoJbkCxuKArrvZgDt47mjdTbg=
 github.com/bufbuild/connect-go v1.10.0/go.mod h1:CAIePUgkDR5pAFaylSMtNK45ANQjp9JvpluG20rhpV8=
-github.com/caarlos0/env/v6 v6.10.1 h1:t1mPSxNpei6M5yAeu1qtRdPAK29Nbcf/n3G7x+b3/II=
-github.com/caarlos0/env/v6 v6.10.1/go.mod h1:hvp/ryKXKipEkcuYjs9mI4bBCg+UI0Yhgm5Zu0ddvwc=
 github.com/caddyserver/certmagic v0.17.2/go.mod h1:ouWUuC490GOLJzkyN35eXfV8bSbwMwSf4bdhkIxtdQE=
 github.com/caddyserver/certmagic v0.20.0 h1:bTw7LcEZAh9ucYCRXyCpIrSAGplplI0vGYJ4BpCQ/Fc=
 github.com/caddyserver/certmagic v0.20.0/go.mod h1:N4sXgpICQUskEWpj7zVzvWD41p3NYacrNoZYiRM2jTg=
@@ -590,8 +588,6 @@ github.com/ianlancetaylor/demangle v0.0.0-20181102032728-5e5cf60278f6/go.mod h1:
 github.com/ianlancetaylor/demangle v0.0.0-20200824232613-28f6c0f3b639/go.mod h1:aSSvb/t6k1mPoxDqO4vJh6VOCGPwU4O0C2/Eqndh1Sc=
 github.com/illarion/gonotify/v2 v2.0.3 h1:B6+SKPo/0Sw8cRJh1aLzNEeNVFfzE3c6N+o+vyxM+9A=
 github.com/illarion/gonotify/v2 v2.0.3/go.mod h1:38oIJTgFqupkEydkkClkbL6i5lXV/bxdH9do5TALPEE=
-github.com/imdario/mergo v0.3.16 h1:wwQJbIsHYGMUyLSPrEq1CT16AhnhNJQ51+4fdHUnCl4=
-github.com/imdario/mergo v0.3.16/go.mod h1:WBLT9ZmE3lPoWsEzCh9LPo3TiwVN+ZKEjmz+hD27ysY=
 github.com/inconshreveable/mousetrap v1.1.0 h1:wN+x4NVGpMsO7ErUn/mUI3vEoE6Jt13X2s0bqwp9tc8=
 github.com/inconshreveable/mousetrap v1.1.0/go.mod h1:vpF70FUmC8bwa3OWnCshd2FqLfsEA9PFc4w1p2J65bw=
 github.com/insomniacslk/dhcp v0.0.0-20231206064809-8c70d406f6d2 h1:9K06NfxkBh25x56yVhWWlKFE8YpicaSfHwoV8SFbueA=
@@ -1619,6 +1615,8 @@ modernc.org/token v1.1.0/go.mod h1:UGzOrNV1mAFSEB63lOFHIpNRUVMvYTc6yu1SMY/XTDM=
 rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=
 rsc.io/quote/v3 v3.1.0/go.mod h1:yEA65RcK8LyAZtP9Kv3t0HmxON59tX3rD+tICJqUlj0=
 rsc.io/sampler v1.3.0/go.mod h1:T1hPZKmBbMNahiBKFy5HrXp6adAjACjK9JXDnKaTXpA=
+sigs.k8s.io/yaml v1.4.0 h1:Mk1wCc2gy/F0THH0TAp1QYyJNzRm2KCLy3o5ASXVI5E=
+sigs.k8s.io/yaml v1.4.0/go.mod h1:Ejl7/uTz7PSA4eKMyQCUTnhZYNmLIl+5c2lQPGR2BPY=
 software.sslmate.com/src/go-pkcs12 v0.4.0 h1:H2g08FrTvSFKUj+D309j1DPfk5APnIdAQAB8aEykJ5k=
 software.sslmate.com/src/go-pkcs12 v0.4.0/go.mod h1:Qiz0EyvDRJjjxGyUQa2cCNZn/wMyzrRJ/qcDXOQazLI=
 tailscale.com v1.80.0 h1:7joWtDtdHEHJvGmOag10RNITKp1I4Ts7Hrn6pU33/1I=

internal/config/config.go

@@ -2,17 +2,18 @@ package config
 
 import (
 	"encoding/base64"
+	"encoding/json"
 	"fmt"
 	"github.com/caddyserver/certmagic"
 	"github.com/jsiebens/ionscale/internal/domain"
 	"github.com/jsiebens/ionscale/internal/key"
 	"github.com/jsiebens/ionscale/internal/util"
 	"github.com/mitchellh/go-homedir"
-	"gopkg.in/yaml.v3"
 	"net/url"
 	"os"
 	"path/filepath"
 	"regexp"
+	"sigs.k8s.io/yaml"
 	"strings"
 	"tailscale.com/tailcfg"
 	tkey "tailscale.com/types/key"
@@ -88,7 +89,7 @@ func LoadConfig(path string) (*Config, error) {
 		}
 	}
 
-	keepAliveInterval = cfg.PollNet.KeepAliveInterval
+	keepAliveInterval = time.Duration(cfg.PollNet.KeepAliveInterval)
 	magicDNSSuffix = cfg.DNS.MagicDNSSuffix
 
 	if cfg.DNS.Provider.Zone != "" {
@@ -116,7 +117,7 @@ func defaultConfig() *Config {
 			AcmeCA:      certmagic.LetsEncryptProductionCA,
 		},
 		PollNet: PollNet{
-			KeepAliveInterval: defaultKeepAliveInterval,
+			KeepAliveInterval: Duration(defaultKeepAliveInterval),
 		},
 		DNS: DNS{
 			MagicDNSSuffix: defaultMagicDNSSuffix,
@@ -142,21 +143,21 @@ type ServerKeys struct {
 }
 
 type Config struct {
-	ListenAddr        string   `yaml:"listen_addr,omitempty"`
+	ListenAddr        string   `json:"listen_addr,omitempty"`
-	StunListenAddr    string   `yaml:"stun_listen_addr,omitempty"`
+	StunListenAddr    string   `json:"stun_listen_addr,omitempty"`
-	MetricsListenAddr string   `yaml:"metrics_listen_addr,omitempty"`
+	MetricsListenAddr string   `json:"metrics_listen_addr,omitempty"`
-	PublicAddr        string   `yaml:"public_addr,omitempty"`
+	PublicAddr        string   `json:"public_addr,omitempty"`
-	StunPublicAddr    string   `yaml:"stun_public_addr,omitempty"`
+	StunPublicAddr    string   `json:"stun_public_addr,omitempty"`
-	Tls               Tls      `yaml:"tls,omitempty"`
+	Tls               Tls      `json:"tls,omitempty"`
-	PollNet           PollNet  `yaml:"poll_net,omitempty"`
+	PollNet           PollNet  `json:"poll_net,omitempty"`
-	Keys              Keys     `yaml:"keys,omitempty"`
+	Keys              Keys     `json:"keys,omitempty"`
-	Database          Database `yaml:"database,omitempty"`
+	Database          Database `json:"database,omitempty"`
-	Auth              Auth     `yaml:"auth,omitempty"`
+	Auth              Auth     `json:"auth,omitempty"`
-	DNS               DNS      `yaml:"dns,omitempty"`
+	DNS               DNS      `json:"dns,omitempty"`
-	DERP              DERP     `yaml:"derp,omitempty"`
+	DERP              DERP     `json:"derp,omitempty"`
-	Logging           Logging  `yaml:"logging,omitempty"`
+	Logging           Logging  `json:"logging,omitempty"`
 
-	PublicUrl *url.URL `yaml:"-"`
+	PublicUrl *url.URL `json:"-"`
 
 	stunHost string
 	stunPort int
@@ -165,79 +166,79 @@ type Config struct {
 }
 
 type Tls struct {
-	Disable     bool   `yaml:"disable"`
+	Disable     bool   `json:"disable"`
-	ForceHttps  bool   `yaml:"force_https"`
+	ForceHttps  bool   `json:"force_https"`
-	CertFile    string `yaml:"cert_file,omitempty"`
+	CertFile    string `json:"cert_file,omitempty"`
-	KeyFile     string `yaml:"key_file,omitempty"`
+	KeyFile     string `json:"key_file,omitempty"`
-	AcmeEnabled bool   `yaml:"acme,omitempty"`
+	AcmeEnabled bool   `json:"acme,omitempty"`
-	AcmeEmail   string `yaml:"acme_email,omitempty"`
+	AcmeEmail   string `json:"acme_email,omitempty"`
-	AcmeCA      string `yaml:"acme_ca,omitempty"`
+	AcmeCA      string `json:"acme_ca,omitempty"`
 }
 
 type PollNet struct {
-	KeepAliveInterval time.Duration `yaml:"keep_alive_interval"`
+	KeepAliveInterval Duration `json:"keep_alive_interval"`
 }
 
 type Logging struct {
-	Level  string `yaml:"level,omitempty"`
+	Level  string `json:"level,omitempty"`
-	Format string `yaml:"format,omitempty"`
+	Format string `json:"format,omitempty"`
-	File   string `yaml:"file,omitempty"`
+	File   string `json:"file,omitempty"`
 }
 
 type Database struct {
-	Type            string        `yaml:"type,omitempty"`
+	Type            string   `json:"type,omitempty"`
-	Url             string        `yaml:"url,omitempty"`
+	Url             string   `json:"url,omitempty"`
-	MaxOpenConns    int           `yaml:"max_open_conns,omitempty"`
+	MaxOpenConns    int      `json:"max_open_conns,omitempty"`
-	MaxIdleConns    int           `yaml:"max_idle_conns,omitempty"`
+	MaxIdleConns    int      `json:"max_idle_conns,omitempty"`
-	ConnMaxLifetime time.Duration `yaml:"conn_max_life_time,omitempty"`
+	ConnMaxLifetime Duration `json:"conn_max_life_time,omitempty"`
-	ConnMaxIdleTime time.Duration `yaml:"conn_max_idle_time,omitempty"`
+	ConnMaxIdleTime Duration `json:"conn_max_idle_time,omitempty"`
 }
 
 type Keys struct {
-	ControlKey       string `yaml:"control_key,omitempty"`
+	ControlKey       string `json:"control_key,omitempty"`
-	LegacyControlKey string `yaml:"legacy_control_key,omitempty"`
+	LegacyControlKey string `json:"legacy_control_key,omitempty"`
-	SystemAdminKey   string `yaml:"system_admin_key,omitempty"`
+	SystemAdminKey   string `json:"system_admin_key,omitempty"`
 }
 
 type Auth struct {
-	Provider          AuthProvider      `yaml:"provider,omitempty"`
+	Provider          AuthProvider      `json:"provider,omitempty"`
-	SystemAdminPolicy SystemAdminPolicy `yaml:"system_admins"`
+	SystemAdminPolicy SystemAdminPolicy `json:"system_admins"`
 }
 
 type AuthProvider struct {
-	Issuer       string   `yaml:"issuer"`
+	Issuer       string   `json:"issuer"`
-	ClientID     string   `yaml:"client_id"`
+	ClientID     string   `json:"client_id"`
-	ClientSecret string   `yaml:"client_secret"`
+	ClientSecret string   `json:"client_secret"`
-	Scopes       []string `yaml:"additional_scopes" `
+	Scopes       []string `json:"additional_scopes" `
 }
 
 type DNS struct {
-	MagicDNSSuffix string      `yaml:"magic_dns_suffix"`
+	MagicDNSSuffix string      `json:"magic_dns_suffix"`
-	Provider       DNSProvider `yaml:"provider,omitempty"`
+	Provider       DNSProvider `json:"provider,omitempty"`
 }
 
 type DNSProvider struct {
-	Name          string            `yaml:"name"`
+	Name          string          `json:"name"`
-	Zone          string            `yaml:"zone"`
+	Zone          string          `json:"zone"`
-	Configuration map[string]string `yaml:"config"`
+	Configuration json.RawMessage `json:"config"`
 }
 
 type SystemAdminPolicy struct {
-	Subs    []string `yaml:"subs,omitempty"`
+	Subs    []string `json:"subs,omitempty"`
-	Emails  []string `yaml:"emails,omitempty"`
+	Emails  []string `json:"emails,omitempty"`
-	Filters []string `yaml:"filters,omitempty"`
+	Filters []string `json:"filters,omitempty"`
 }
 
 type DERP struct {
-	Server  DERPServer `yaml:"server,omitempty"`
+	Server  DERPServer `json:"server,omitempty"`
-	Sources []string   `yaml:"sources,omitempty"`
+	Sources []string   `json:"sources,omitempty"`
 }
 
 type DERPServer struct {
-	Disabled   bool   `yaml:"disabled,omitempty"`
+	Disabled   bool   `json:"disabled,omitempty"`
-	RegionID   int    `yaml:"region_id,omitempty"`
+	RegionID   int    `json:"region_id,omitempty"`
-	RegionCode string `yaml:"region_code,omitempty"`
+	RegionCode string `json:"region_code,omitempty"`
-	RegionName string `yaml:"region_name,omitempty"`
+	RegionName string `json:"region_name,omitempty"`
 }
 
 func (c *Config) Validate() (*Config, error) {
@@ -356,6 +357,37 @@ func (c *Config) DefaultDERPMap() *tailcfg.DERPMap {
 	}
 }
 
+type Duration time.Duration
+
+func (d Duration) Std() time.Duration {
+	return time.Duration(d)
+}
+
+func (d Duration) MarshalJSON() ([]byte, error) {
+	return json.Marshal(time.Duration(d).String())
+}
+
+func (d *Duration) UnmarshalJSON(b []byte) error {
+	var v interface{}
+	if err := json.Unmarshal(b, &v); err != nil {
+		return err
+	}
+	switch value := v.(type) {
+	case float64:
+		*d = Duration(value)
+		return nil
+	case string:
+		tmp, err := time.ParseDuration(value)
+		if err != nil {
+			return err
+		}
+		*d = Duration(tmp)
+		return nil
+	default:
+		return fmt.Errorf("invalid duration")
+	}
+}
+
 // Match ${VAR:default} syntax for variables with default values
 var optionalEnvRegex = regexp.MustCompile(`\${([a-zA-Z0-9_]+):([^}]*)}`)
 

internal/config/config_test.go

@@ -24,6 +24,7 @@ database:
   type: ${DB_TYPE:sqlite}
   url: ${DB_URL}
   max_open_conns: ${DB_MAX_OPEN_CONNS:5}
+  conn_max_life_time: ${DB_CONN_MAX_LIFE_TIME:5s}
 `
 	if _, err := tempFile.Write([]byte(yamlContent)); err != nil {
 		t.Fatalf("Failed to write to temp file: %v", err)

internal/database/database.go

@@ -39,8 +39,8 @@ func OpenDB(config *config.Database, logger *zap.Logger) (*sql.DB, domain.Reposi
 
 	sqlDB.SetMaxOpenConns(config.MaxOpenConns)
 	sqlDB.SetMaxIdleConns(config.MaxIdleConns)
-	sqlDB.SetConnMaxLifetime(config.ConnMaxLifetime)
+	sqlDB.SetConnMaxLifetime(config.ConnMaxLifetime.Std())
-	sqlDB.SetConnMaxIdleTime(config.ConnMaxIdleTime)
+	sqlDB.SetConnMaxIdleTime(config.ConnMaxIdleTime.Std())
 
 	repository := domain.NewRepository(db)
 

internal/dns/provider.go

@@ -2,9 +2,9 @@ package dns
 
 import (
 	"context"
+	"encoding/json"
 	"fmt"
 	"github.com/jsiebens/ionscale/internal/config"
-	"github.com/jsiebens/ionscale/internal/mapping"
 	"github.com/libdns/azure"
 	"github.com/libdns/cloudflare"
 	"github.com/libdns/digitalocean"
@@ -15,6 +15,14 @@ import (
 	"time"
 )
 
+var factories = map[string]func() libdns.RecordSetter{
+	"azure":          azureProvider,
+	"cloudflare":     cloudflareProvider,
+	"digitalocean":   digitalOceanProvider,
+	"googleclouddns": googleCloudDNSProvider,
+	"route53":        route53Provider,
+}
+
 type Provider interface {
 	SetRecord(ctx context.Context, recordType, recordName, value string) error
 }
@@ -29,60 +37,40 @@ func NewProvider(config config.DNS) (Provider, error) {
 		return nil, fmt.Errorf("invalid MagicDNS suffix [%s], not part of zone [%s]", config.MagicDNSSuffix, p.Zone)
 	}
 
-	switch p.Name {
+	factory, ok := factories[p.Name]
-	case "azure":
+	if !ok {
-		return configureAzureProvider(p.Zone, p.Configuration)
-	case "cloudflare":
-		return configureCloudflareProvider(p.Zone, p.Configuration)
-	case "digitalocean":
-		return configureDigitalOceanProvider(p.Zone, p.Configuration)
-	case "googleclouddns":
-		return configureGoogleCloudDNSProvider(p.Zone, p.Configuration)
-	case "route53":
-		return configureRoute53Provider(p.Zone, p.Configuration)
-	default:
 		return nil, fmt.Errorf("unknown dns provider: %s", p.Name)
 	}
+
+	return newProvider(p.Zone, p.Configuration, factory)
 }
 
-func configureAzureProvider(zone string, values map[string]string) (Provider, error) {
+func newProvider(zone string, values json.RawMessage, factory func() libdns.RecordSetter) (Provider, error) {
-	p := &azure.Provider{}
+	p := factory()
-	if err := mapping.CopyViaJson(values, p); err != nil {
+	if err := json.Unmarshal(values, p); err != nil {
 		return nil, err
 	}
 	return &externalProvider{zone: fqdn(zone), setter: p}, nil
 }
 
-func configureCloudflareProvider(zone string, values map[string]string) (Provider, error) {
+func azureProvider() libdns.RecordSetter {
-	p := &cloudflare.Provider{}
+	return &azure.Provider{}
-	if err := mapping.CopyViaJson(values, p); err != nil {
-		return nil, err
-	}
-	return &externalProvider{zone: fqdn(zone), setter: p}, nil
 }
 
-func configureDigitalOceanProvider(zone string, values map[string]string) (Provider, error) {
+func cloudflareProvider() libdns.RecordSetter {
-	p := &digitalocean.Provider{}
+	return &cloudflare.Provider{}
-	if err := mapping.CopyViaJson(values, p); err != nil {
-		return nil, err
-	}
-	return &externalProvider{zone: fqdn(zone), setter: p}, nil
 }
 
-func configureGoogleCloudDNSProvider(zone string, values map[string]string) (Provider, error) {
+func digitalOceanProvider() libdns.RecordSetter {
-	p := &googleclouddns.Provider{}
+	return &digitalocean.Provider{}
-	if err := mapping.CopyViaJson(values, p); err != nil {
-		return nil, err
-	}
-	return &externalProvider{zone: fqdn(zone), setter: p}, nil
 }
 
-func configureRoute53Provider(zone string, values map[string]string) (Provider, error) {
+func googleCloudDNSProvider() libdns.RecordSetter {
-	p := &route53.Provider{}
+	return &googleclouddns.Provider{}
-	if err := mapping.CopyViaJson(values, p); err != nil {
-		return nil, err
 }
-	return &externalProvider{zone: fqdn(zone), setter: p}, nil
+
+func route53Provider() libdns.RecordSetter {
+	return &route53.Provider{}
 }
 
 type externalProvider struct {

internal/mapping/mapping.go

@@ -1,7 +1,6 @@
 package mapping
 
 import (
-	"encoding/json"
 	"fmt"
 	"github.com/jsiebens/ionscale/internal/config"
 	"github.com/jsiebens/ionscale/internal/domain"
@@ -15,19 +14,6 @@ import (
 	"time"
 )
 
-func CopyViaJson[F any, T any](f F, t T) error {
-	raw, err := json.Marshal(f)
-	if err != nil {
-		return err
-	}
-
-	if err := json.Unmarshal(raw, t); err != nil {
-		return err
-	}
-
-	return nil
-}
-
 func ToDNSConfig(m *domain.Machine, tailnet *domain.Tailnet, c *domain.DNSConfig) *tailcfg.DNSConfig {
 	certsEnabled := c.HttpsCertsEnabled && config.DNSProviderConfigured()