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74 lines
2.6 KiB
Go
74 lines
2.6 KiB
Go
/*
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Copyright 2015 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package initialresources
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import (
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"fmt"
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"strings"
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"time"
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influxdb "github.com/influxdata/influxdb/client"
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api "k8s.io/kubernetes/pkg/apis/core"
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)
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const (
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cpuSeriesName = "autoscaling.cpu.usage.2m"
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memSeriesName = "autoscaling.memory.usage.2m"
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cpuContinuousQuery = "select derivative(value) as value from \"cpu/usage_ns_cumulative\" where pod_id <> '' group by pod_id, pod_namespace, container_name, container_base_image, time(2m) into " + cpuSeriesName
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memContinuousQuery = "select mean(value) as value from \"memory/usage_bytes_gauge\" where pod_id <> '' group by pod_id, pod_namespace, container_name, container_base_image, time(2m) into " + memSeriesName
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timeFormat = "2006-01-02 15:04:05"
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)
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// TODO(piosz): rewrite this once we will migrate into InfluxDB v0.9.
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type influxdbSource struct{}
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func newInfluxdbSource(host, user, password, db string) (dataSource, error) {
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return &influxdbSource{}, nil
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}
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func (s *influxdbSource) query(query string) ([]*influxdb.Response, error) {
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// TODO(piosz): add support again
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return nil, fmt.Errorf("temporary not supported; see #18826 for more details")
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}
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func (s *influxdbSource) GetUsagePercentile(kind api.ResourceName, perc int64, image, namespace string, exactMatch bool, start, end time.Time) (int64, int64, error) {
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var series string
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if kind == api.ResourceCPU {
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series = cpuSeriesName
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} else if kind == api.ResourceMemory {
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series = memSeriesName
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}
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var imgPattern string
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if exactMatch {
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imgPattern = "='" + image + "'"
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} else {
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// Escape character "/" in image pattern.
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imgPattern = "=~/^" + strings.Replace(image, "/", "\\/", -1) + "/"
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}
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var namespaceCond string
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if namespace != "" {
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namespaceCond = " and pod_namespace='" + namespace + "'"
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}
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query := fmt.Sprintf("select percentile(value, %v), count(pod_id) from %v where container_base_image%v%v and time > '%v' and time < '%v'", perc, series, imgPattern, namespaceCond, start.UTC().Format(timeFormat), end.UTC().Format(timeFormat))
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if _, err := s.query(query); err != nil {
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return 0, 0, fmt.Errorf("error while trying to query InfluxDB: %v", err)
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}
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return 0, 0, nil
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}
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