2022-12-08 13:05:19 -03:00

76 lines
2.0 KiB
Go

// Copyright (c) 2021 Gitpod GmbH. All rights reserved.
// Licensed under the GNU Affero General Public License (AGPL).
// See License.AGPL.txt in the project root for license information.
package pkg
import (
"encoding/json"
"os"
"github.com/gitpod-io/gitpod/common-go/util"
validation "github.com/go-ozzo/ozzo-validation"
"github.com/go-ozzo/ozzo-validation/is"
"golang.org/x/xerrors"
)
type Config struct {
LogDebug bool `json:"log_debug"`
CacheDurationRegular util.Duration `json:"cache_duration_regular"`
CacheDurationBackup util.Duration `json:"cache_duration_backup"`
URLUpstream string `json:"url_upstream"`
URLLocal string `json:"url_local"`
MaxIdleConns int `json:"max_idle_conns"`
MaxIdleConnsPerHost int `json:"max_idle_conns_per_host"`
RedisAddr string `json:"redis_addr"`
PrometheusAddr string `json:"prometheusAddr"`
AllowCacheDomain []string `json:"allow_cache_domain"`
}
// Validate validates the configuration to catch issues during startup and not at runtime
func (c *Config) Validate() error {
if c == nil {
return xerrors.Errorf("config is missing")
}
return validation.ValidateStruct(c,
validation.Field(&c.CacheDurationRegular, validation.Required),
validation.Field(&c.CacheDurationBackup, validation.Required),
validation.Field(&c.URLUpstream, validation.Required, is.URL),
validation.Field(&c.URLLocal, validation.Required, is.URL),
)
}
// ReadConfig loads and validates the configuration
func ReadConfig(fn string) (*Config, error) {
fc, err := os.ReadFile(fn)
if err != nil {
return nil, err
}
var cfg Config
err = json.Unmarshal(fc, &cfg)
if err != nil {
return nil, err
}
err = cfg.Validate()
if err != nil {
return nil, xerrors.Errorf("config validation error: %w", err)
}
return &cfg, nil
}
func (cfg *Config) ToJson() []byte {
b, err := json.Marshal(cfg)
if err != nil {
return nil
}
return b
}
func (cfg *Config) RedisEnabled() bool {
return len(cfg.RedisAddr) > 0
}