heapsterdatamodel.go

// Copyright 2015 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 metric

import (
	"encoding/json"
	"github.com/kubernetes/dashboard/src/app/backend/client"

	heapster "k8s.io/heapster/metrics/api/v1/types"
	"github.com/kubernetes/dashboard/src/app/backend/resource/common"
)

// HeapsterAllInOneDownloadConfig holds config information specifying whether given native heapster resource type supports list download.
var HeapsterAllInOneDownloadConfig = map[common.ResourceKind]bool{
	common.ResourceKindPod:  true,
	common.ResourceKindNode: false,
}

// DataPointsFromMetricJSONFormat converts all the data points from format used by heapster to our format.
func DataPointsFromMetricJSONFormat(raw heapster.MetricResult) DataPoints {
	dp := DataPoints{}
	for _, raw := range raw.Metrics {
		converted := DataPoint{
			X: raw.Timestamp.Unix(),
			Y: int64(raw.Value),
		}

		dp = append(dp, converted)
	}
	return dp
}

// Performs heapster GET request to the specifies path and transfers the data to the interface provided.
func HeapsterUnmarshalType(client client.HeapsterClient, path string, v interface{}) error {
	rawData, err := client.Get("/model/" + path).DoRaw()
	if err != nil {
		return err
	}
	return json.Unmarshal(rawData, v)
}