forked from intelsdi-x/snap
/
strategy.go
57 lines (45 loc) · 1.64 KB
/
strategy.go
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/*
http://www.apache.org/licenses/LICENSE-2.0.txt
Copyright 2015 Intel Corporation
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 strategy provides basic interfaces for routing to available
// plugins and caching metric data.
package strategy
import (
"errors"
"time"
"github.com/intelsdi-x/snap/core"
)
type MapAvailablePlugin map[uint32]AvailablePlugin
var (
ErrCouldNotSelect = errors.New("could not select a plugin")
)
type RoutingAndCaching interface {
Select(availablePlugins []AvailablePlugin, id string) (AvailablePlugin, error)
Remove(availablePlugins []AvailablePlugin, id string) (AvailablePlugin, error)
CheckCache(metrics []core.Metric, id string) ([]core.Metric, []core.Metric)
UpdateCache(metrics []core.Metric, id string)
CacheHits(ns string, ver int, id string) (uint64, error)
CacheMisses(ns string, ver int, id string) (uint64, error)
AllCacheHits() uint64
AllCacheMisses() uint64
CacheTTL(taskID string) (time.Duration, error)
String() string
}
// Values returns slice of map values
func (sm MapAvailablePlugin) Values() []AvailablePlugin {
values := []AvailablePlugin{}
for _, v := range sm {
values = append(values, v)
}
return values
}