106 lines
2.9 KiB
Go
106 lines
2.9 KiB
Go
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/*
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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 e2e
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// Tests network performance using iperf or other containers.
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import (
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"bytes"
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"encoding/json"
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"fmt"
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"strconv"
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"strings"
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"k8s.io/kubernetes/test/e2e/framework"
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)
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type IPerfResults struct {
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BandwidthMap map[string]int64
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}
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// IPerfResult struct modelling an iperf record....
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// 20160314154239,172.17.0.3,34152,172.17.0.2,5001,3,0.0-10.0,33843707904,27074774092
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type IPerfResult struct {
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date string // field 1 in the csv
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cli string // field 2 in the csv
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cliPort int64 // ...
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server string
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servPort int64
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id string
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interval string
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transferBits int64
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bandwidthBits int64
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}
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// Add adds a new result to the Results struct.
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func (i *IPerfResults) Add(ipr *IPerfResult) {
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if i.BandwidthMap == nil {
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i.BandwidthMap = map[string]int64{}
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}
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i.BandwidthMap[ipr.cli] = ipr.bandwidthBits
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}
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// ToTSV exports an easily readable tab delimited format of all IPerfResults.
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func (i *IPerfResults) ToTSV() string {
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if len(i.BandwidthMap) < 1 {
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framework.Logf("Warning: no data in bandwidth map")
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}
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var buffer bytes.Buffer
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for node, bandwidth := range i.BandwidthMap {
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asJson, _ := json.Marshal(node)
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buffer.WriteString("\t " + string(asJson) + "\t " + fmt.Sprintf("%E", float64(bandwidth)))
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}
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return buffer.String()
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}
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// NewIPerf parses an IPerf CSV output line into an IPerfResult.
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func NewIPerf(csvLine string) *IPerfResult {
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slice := StrSlice(strings.Split(csvLine, ","))
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if len(slice) != 9 {
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framework.Failf("Incorrect fields in the output: %v (%v out of 9)", slice, len(slice))
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}
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i := IPerfResult{}
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i.date = slice.get(0)
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i.cli = slice.get(1)
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i.cliPort = intOrFail("client port", slice.get(2))
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i.server = slice.get(3)
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i.servPort = intOrFail("server port", slice.get(4))
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i.id = slice.get(5)
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i.interval = slice.get(6)
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i.transferBits = intOrFail("transfer port", slice.get(7))
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i.bandwidthBits = intOrFail("bandwidth port", slice.get(8))
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return &i
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}
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type StrSlice []string
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func (s StrSlice) get(i int) string {
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if i >= 0 && i < len(s) {
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return s[i]
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}
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return ""
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}
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// intOrFail is a convenience function for parsing integers.
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func intOrFail(debugName string, rawValue string) int64 {
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value, err := strconv.ParseInt(rawValue, 10, 64)
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if err != nil {
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framework.Failf("Failed parsing value %v from the string '%v' as an integer", debugName, rawValue)
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}
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return value
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}
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