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known_drivers.go
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/
known_drivers.go
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// Copyright Project Harbor 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 provider
import (
"sort"
"strings"
)
const (
// DriverDragonfly represents the driver for dragonfly
DriverDragonfly = "dragonfly"
// DriverKraken represents the driver for kraken
DriverKraken = "kraken"
)
// knownDrivers is static driver Factory registry
var knownDrivers = map[string]Factory{
DriverDragonfly: DragonflyFactory,
DriverKraken: KrakenFactory,
}
// ListProviders returns all the registered drivers.
func ListProviders() ([]*Metadata, error) {
results := make([]*Metadata, 0)
for _, f := range knownDrivers {
drv, err := f(nil)
if err != nil {
return nil, err
}
results = append(results, drv.Self())
}
// Sort results
if len(results) > 1 {
sort.SliceStable(results, func(i, j int) bool {
return strings.Compare(results[i].ID, results[j].ID) < 0
})
}
return results, nil
}
// GetProvider returns the driver factory identified by the ID.
//
// If exists, bool flag will be set to be true and a non-nil reference will be returned.
func GetProvider(ID string) (Factory, bool) {
f, ok := knownDrivers[ID]
return f, ok
}