/
call.go
130 lines (120 loc) · 3.51 KB
/
call.go
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// Copyright 2022 Tetrate
//
// 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 pkg
import (
"fmt"
"github.com/olekukonko/tablewriter"
"math"
"os"
"sort"
)
type Call struct {
From string
FromWorkload string
To string
ToWorkload string
CallCost float64
CallSize uint64
}
func (c *Call) String() string {
return fmt.Sprintf("%v (%v)->%v (%v) : %v", c.FromWorkload, c.From, c.ToWorkload, c.To, c.CallSize)
}
func (c *Call) StringCost() string {
return fmt.Sprintf("%v (%v)->%v (%v) : $%v", c.FromWorkload, c.From, c.ToWorkload, c.To, c.CallCost)
}
func PrintCostTable(calls []*Call, total float64, details bool) {
// print total
fmt.Printf("\nTotal: %s\n\n", transformCost(total))
if !details {
printMinifiedCostTable(calls)
return
}
// sort by cost
sort.Slice(calls, func(i, j int) bool {
return calls[i].CallCost > calls[j].CallCost
})
table := tablewriter.NewWriter(os.Stdout)
headers := []string{"Source Service", "Source Locality", "Destination Service", "Destination Locality", "Transferred (MB)", "Cost"}
table.SetHeader(headers)
for _, v := range calls {
values := []string{v.FromWorkload, v.From, v.ToWorkload, v.To, fmt.Sprintf("%f", float64(v.CallSize)/math.Pow(10, 6)), transformCost(v.CallCost)}
table.Append(values)
}
kubernetesify(table)
table.Render()
fmt.Println()
}
func printMinifiedCostTable(calls []*Call) {
callBySource := make(map[string]Call)
for i, v := range calls {
if srcCall, ok := callBySource[v.FromWorkload]; !ok {
callBySource[v.FromWorkload] = *calls[i]
} else {
srcCall.CallCost += callBySource[v.FromWorkload].CallCost
}
}
callSlice := make([]Call, 0)
for _, v := range callBySource {
callSlice = append(callSlice, v)
}
// order by cost
sort.Slice(callSlice, func(i, j int) bool {
return callSlice[i].CallCost > callSlice[j].CallCost
})
// print
table := tablewriter.NewWriter(os.Stdout)
headers := []string{"Source Service", "Source Locality", "Cost"}
table.SetHeader(headers)
for _, v := range callSlice {
values := []string{v.FromWorkload, v.From, transformCost(v.CallCost)}
table.Append(values)
}
kubernetesify(table)
table.Render()
fmt.Println()
}
func transformCost(cost float64) string {
costStr := fmt.Sprintf("$%.2f", cost)
if cost < 0.01 {
costStr = "<$0.01"
}
if cost == 0 {
costStr = "-"
}
return costStr
}
func kubernetesify(table *tablewriter.Table) {
table.SetAutoWrapText(false)
table.SetAutoFormatHeaders(true)
table.SetHeaderAlignment(tablewriter.ALIGN_LEFT)
table.SetAlignment(tablewriter.ALIGN_LEFT)
table.SetCenterSeparator("")
table.SetColumnSeparator("")
table.SetRowSeparator("")
table.SetHeaderLine(false)
table.SetBorder(false)
table.SetTablePadding("\t") // pad with tabs
table.SetNoWhiteSpace(true)
table.SetBorder(false)
}
// PodCall represents raw pod data, not containing locality or cost information.
type PodCall struct {
FromPod string
FromNamespace string
FromWorkload string
ToPod string
ToWorkload string
ToNamespace string
CallSize uint64
}