forked from grafana/alerting
/
config.go
81 lines (71 loc) · 2.98 KB
/
config.go
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package oncall
import (
"encoding/json"
"errors"
"fmt"
"net/http"
"strconv"
"github.com/davidfrickert/alerting/receivers"
"github.com/davidfrickert/alerting/templates"
)
type Config struct {
URL string
HTTPMethod string
MaxAlerts int
// Authorization Header.
AuthorizationScheme string
AuthorizationCredentials string
// HTTP Basic Authentication.
User string
Password string
Title string
Message string
}
func NewConfig(jsonData json.RawMessage, decryptFn receivers.DecryptFunc) (Config, error) {
settings := Config{}
rawSettings := struct {
URL string `json:"url,omitempty" yaml:"url,omitempty"`
HTTPMethod string `json:"httpMethod,omitempty" yaml:"httpMethod,omitempty"`
MaxAlerts receivers.OptionalNumber `json:"maxAlerts,omitempty" yaml:"maxAlerts,omitempty"`
AuthorizationScheme string `json:"authorization_scheme,omitempty" yaml:"authorization_scheme,omitempty"`
AuthorizationCredentials string `json:"authorization_credentials,omitempty" yaml:"authorization_credentials,omitempty"`
User string `json:"username,omitempty" yaml:"username,omitempty"`
Password string `json:"password,omitempty" yaml:"password,omitempty"`
Title string `json:"title,omitempty" yaml:"title,omitempty"`
Message string `json:"message,omitempty" yaml:"message,omitempty"`
}{}
err := json.Unmarshal(jsonData, &rawSettings)
if err != nil {
return settings, fmt.Errorf("failed to unmarshal settings: %w", err)
}
if rawSettings.URL == "" {
return settings, errors.New("required field 'url' is not specified")
}
settings.URL = rawSettings.URL
settings.AuthorizationScheme = rawSettings.AuthorizationScheme
if rawSettings.HTTPMethod == "" {
rawSettings.HTTPMethod = http.MethodPost
}
settings.HTTPMethod = rawSettings.HTTPMethod
if rawSettings.MaxAlerts != "" {
settings.MaxAlerts, _ = strconv.Atoi(rawSettings.MaxAlerts.String())
}
settings.User = decryptFn("username", rawSettings.User)
settings.Password = decryptFn("password", rawSettings.Password)
settings.AuthorizationCredentials = decryptFn("authorization_credentials", rawSettings.AuthorizationCredentials)
if settings.AuthorizationCredentials != "" && settings.AuthorizationScheme == "" {
settings.AuthorizationScheme = "Bearer"
}
if settings.User != "" && settings.Password != "" && settings.AuthorizationScheme != "" && settings.AuthorizationCredentials != "" {
return settings, errors.New("both HTTP Basic Authentication and Authorization Header are set, only 1 is permitted")
}
settings.Title = rawSettings.Title
if settings.Title == "" {
settings.Title = templates.DefaultMessageTitleEmbed
}
settings.Message = rawSettings.Message
if settings.Message == "" {
settings.Message = templates.DefaultMessageEmbed
}
return settings, err
}