// Copyright 2015 The LUCI 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 store contains code for storing and retrieving metrics.
package store

import (
	"context"
	"time"

	"go.chromium.org/luci/common/tsmon/types"
)

// A Store is responsible for handling all metric data.
type Store interface {
	DefaultTarget() types.Target
	SetDefaultTarget(t types.Target)

	Get(c context.Context, m types.Metric, resetTime time.Time, fieldVals []interface{}) interface{}
	Set(c context.Context, m types.Metric, resetTime time.Time, fieldVals []interface{}, value interface{})
	Del(c context.Context, m types.Metric, fieldVals []interface{})
	Incr(c context.Context, m types.Metric, resetTime time.Time, fieldVals []interface{}, delta interface{})

	GetAll(c context.Context) []types.Cell

	Reset(c context.Context, m types.Metric)
}