/
config.go
92 lines (81 loc) · 2.25 KB
/
config.go
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package ddnsman
import (
"encoding/json"
"fmt"
"net/url"
"os"
"time"
"github.com/goccy/go-yaml"
"github.com/miekg/dns"
)
type Configuration struct {
Interval time.Duration `json:"interval"`
Settings []Setting `json:"settings"`
ShoutrrrAddrs []ShoutrrrNotifications `json:"shoutrrr_notifications"`
}
type Setting struct {
Domain string `json:"domain"`
Records []string `json:"records"`
Provider struct {
Name string `json:"name"`
Settings json.RawMessage `json:"settings"`
} `json:"provider"`
provider Provider
}
type ShoutrrrNotifications struct {
URL string `json:"url"`
Settings map[string]string `json:"settings"`
}
func (c Configuration) shoutrrrURLs() ([]string, error) {
urls := make([]string, 0, len(c.ShoutrrrAddrs))
for _, addr := range c.ShoutrrrAddrs {
u, err := url.Parse(addr.URL)
if err != nil {
return nil, fmt.Errorf("parse url: %w", err)
}
vals := url.Values{}
for k, v := range addr.Settings {
vals.Add(k, v)
}
u.RawQuery = vals.Encode()
urls = append(urls, u.String())
}
return urls, nil
}
func LoadConfiguration() (*Configuration, error) {
configPath := os.Getenv("CONFIG_PATH")
if configPath == "" {
configPath = "ddnsman.json"
}
config, err := readConfiguration(configPath)
if err != nil {
return nil, fmt.Errorf("read config: %w", err)
}
if config.Interval == 0 {
config.Interval = 5 * time.Minute
}
processConfiguration(config)
return config, nil
}
func readConfiguration(configPath string) (*Configuration, error) {
config := new(Configuration)
f, err := os.ReadFile(configPath)
if err != nil {
return nil, fmt.Errorf("read configuration file: %w", err)
}
if err := yaml.UnmarshalWithOptions(f, config, yaml.UseJSONUnmarshaler()); err != nil {
return nil, fmt.Errorf("parse configuration file: %w", err)
}
return config, nil
}
func processConfiguration(config *Configuration) error {
for idx, setting := range config.Settings {
provider, err := newProvider(setting.Provider.Name, setting.Provider.Settings)
if err != nil {
return fmt.Errorf("unable to create a new provider: %w", err)
}
config.Settings[idx].provider = provider
config.Settings[idx].Domain = dns.Fqdn(config.Settings[idx].Domain)
}
return nil
}