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option.go
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option.go
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//
// Copyright (C) 2019-2020 Vdaas.org Vald team ( kpango, rinx, kmrmt )
//
// 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
//
// https://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 observer provides storage observer
package observer
import (
"path/filepath"
"github.com/vdaas/vald/internal/errgroup"
"github.com/vdaas/vald/internal/timeutil"
"github.com/vdaas/vald/pkg/agent/internal/metadata"
"github.com/vdaas/vald/pkg/agent/sidecar/service/storage"
)
type Option func(o *observer) error
var (
defaultOpts = []Option{
WithErrGroup(errgroup.Get()),
WithBackupDuration("10m"),
WithPostStopTimeout("2m"),
WithWatch(true),
WithTicker(true),
}
)
func WithBackupDuration(dur string) Option {
return func(o *observer) error {
if dur == "" {
return nil
}
d, err := timeutil.Parse(dur)
if err != nil {
return nil
}
o.checkDuration = d
return nil
}
}
func WithPostStopTimeout(dur string) Option {
return func(o *observer) error {
if dur == "" {
return nil
}
d, err := timeutil.Parse(dur)
if err != nil {
return nil
}
o.postStopTimeout = d
return nil
}
}
func WithWatch(enabled bool) Option {
return func(o *observer) error {
o.watchEnabled = enabled
return nil
}
}
func WithTicker(enabled bool) Option {
return func(o *observer) error {
o.tickerEnabled = enabled
return nil
}
}
func WithErrGroup(eg errgroup.Group) Option {
return func(o *observer) error {
if eg != nil {
o.eg = eg
}
return nil
}
}
func WithDir(dir string) Option {
return func(o *observer) error {
if dir == "" {
return nil
}
o.dir = dir
o.metadataPath = filepath.Join(dir, metadata.AgentMetadataFileName)
return nil
}
}
func WithBlobStorage(storage storage.Storage) Option {
return func(o *observer) error {
if storage != nil {
o.storage = storage
}
return nil
}
}
func WithHooks(hooks ...Hook) Option {
return func(o *observer) error {
if hooks == nil {
return nil
}
if o.hooks != nil {
o.hooks = append(o.hooks, hooks...)
}
o.hooks = hooks
return nil
}
}