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backup_config.go
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backup_config.go
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// Copyright 2021 the Exposure Notifications Verification Server authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package config
import (
"context"
"time"
"github.com/google/exposure-notifications-server/pkg/observability"
"github.com/google/exposure-notifications-verification-server/pkg/database"
"github.com/sethvargo/go-envconfig"
)
// BackupConfig is the configuration for backups.
type BackupConfig struct {
Database database.Config
Observability observability.Config
// DevMode produces additional debugging information. Do not enable in
// production environments.
DevMode bool `env:"DEV_MODE"`
// Port is the port on which to bind.
Port string `env:"PORT, default=8080"`
// MinTTL is the minimum amount of time that must elapse between attempting
// backups. This is used to control whether the backup is actually executed
// and to prevent concurrent backups.
MinTTL time.Duration `env:"BACKUP_MIN_PERIOD, default=5m"`
// Timeout is the maximum amount of time to wait for a backup operation to
// complete.
Timeout time.Duration `env:"BACKUP_TIMEOUT, default=10m"`
// Bucket is the name of the Cloud Storage bucket where backups should be
// stored.
Bucket string `env:"BACKUP_BUCKET, required"`
// DatabaseInstanceURL is the full self-link of the URL to the SQL instance.
DatabaseInstanceURL string `env:"BACKUP_DATABASE_INSTANCE_URL, required"`
// DatabaseName is the name of the database to backup.
DatabaseName string `env:"BACKUP_DATABASE_NAME, required"`
}
// NewBackupConfig returns the environment config for the backup server.
func NewBackupConfig(ctx context.Context) (*BackupConfig, error) {
var config BackupConfig
if err := ProcessWith(ctx, &config, envconfig.OsLookuper()); err != nil {
return nil, err
}
return &config, nil
}
func (c *BackupConfig) Validate() error {
fields := []struct {
Var time.Duration
Name string
}{
{c.MinTTL, "BACKUP_MIN_PERIOD"},
}
for _, f := range fields {
if err := checkPositiveDuration(f.Var, f.Name); err != nil {
return err
}
}
return nil
}
func (c *BackupConfig) ObservabilityExporterConfig() *observability.Config {
return &c.Observability
}