// Copyright 2020 Google Inc. All Rights Reserved.
//
// 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 metrics

import (
	"time"

	info "github.com/google/cadvisor/info/v1"
	v2 "github.com/google/cadvisor/info/v2"
)

// metricValue describes a single metric value for a given set of label values
// within a parent containerMetric.
type metricValue struct {
	value     float64
	labels    []string
	timestamp time.Time
}

type metricValues []metricValue

// infoProvider will usually be manager.Manager, but can be swapped out for testing.
type infoProvider interface {
	// GetRequestedContainersInfo gets info for all requested containers based on the request options.
	GetRequestedContainersInfo(containerName string, options v2.RequestOptions) (map[string]*info.ContainerInfo, error)
	// GetVersionInfo provides information about the version.
	GetVersionInfo() (*info.VersionInfo, error)
	// GetMachineInfo provides information about the machine.
	GetMachineInfo() (*info.MachineInfo, error)
}