/
config.go
66 lines (56 loc) · 1.41 KB
/
config.go
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package queuemanager
import (
"github.com/reddec/trusted-cgi/application"
"github.com/reddec/trusted-cgi/internal"
"os"
"sync"
)
type naiveFileStorePayload struct {
Queues []application.Queue `json:"queues"`
}
func FileConfig(filename string) *naiveFileStore {
return &naiveFileStore{file: filename}
}
type naiveFileStore struct {
file string
lock sync.RWMutex
}
func (nfs *naiveFileStore) SetQueues(queues []application.Queue) error {
nfs.lock.Lock()
defer nfs.lock.Unlock()
return internal.AtomicWriteJson(nfs.file, &naiveFileStorePayload{Queues: queues})
}
func (nfs *naiveFileStore) GetQueues() ([]application.Queue, error) {
nfs.lock.RLock()
defer nfs.lock.RUnlock()
var pd naiveFileStorePayload
err := internal.ReadJson(nfs.file, &pd)
if err == nil {
return pd.Queues, nil
}
if os.IsNotExist(err) {
return nil, nil
}
return nil, err
}
func Mock(queues ...application.Queue) *mockStore {
return &mockStore{queues: queues}
}
type mockStore struct {
lock sync.RWMutex
queues []application.Queue
}
func (msc *mockStore) SetQueues(queues []application.Queue) error {
msc.lock.Lock()
defer msc.lock.Unlock()
msc.queues = make([]application.Queue, len(queues))
copy(msc.queues, queues)
return nil
}
func (msc *mockStore) GetQueues() ([]application.Queue, error) {
msc.lock.RLock()
defer msc.lock.RUnlock()
out := make([]application.Queue, len(msc.queues))
copy(out, msc.queues)
return out, nil
}