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version_check.go
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version_check.go
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// Copyright © 2021 The Things Network Foundation, The Things Industries B.V.
//
// 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 component
import (
"context"
"time"
"go.thethings.network/lorawan-stack/v3/pkg/httpclient"
"go.thethings.network/lorawan-stack/v3/pkg/task"
"go.thethings.network/lorawan-stack/v3/pkg/version"
)
const (
versionCheckPeriod = 12 * time.Hour
versionCheckTimeout = 10 * time.Second
)
// versionCheckTask returns the task configuration for a periodic version check.
func versionCheckTask(ctx context.Context, clientProvider httpclient.Provider) *task.Config {
taskConfig := task.Config{
Context: ctx,
ID: "version_check",
Func: func(ctx context.Context) error {
checkCtx, cancel := context.WithTimeout(ctx, versionCheckTimeout)
defer cancel()
client, err := clientProvider.HTTPClient(checkCtx)
if err != nil {
return err
}
update, err := version.CheckUpdate(checkCtx, version.WithClient(client))
if err != nil {
return err
}
version.LogUpdate(checkCtx, update)
select {
case <-ctx.Done():
return ctx.Err()
case <-time.After(versionCheckPeriod):
return nil
}
},
Restart: task.RestartAlways,
Backoff: task.DialBackoffConfig,
}
return &taskConfig
}