/
plan.go
174 lines (150 loc) · 3.94 KB
/
plan.go
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package commands
import (
"fmt"
"io"
"time"
"github.com/aws/aws-sdk-go-v2/service/cloudformation/types"
"github.com/fatih/color"
"github.com/olekukonko/tablewriter"
"github.com/rogerwelin/cfnctl/cli/params"
"github.com/rogerwelin/cfnctl/pkg/client"
)
type planChanges struct {
containsChanges bool
changes map[string]int
}
func planOutput(changes []types.Change, writer io.Writer) planChanges {
tableData := [][]string{}
table := tablewriter.NewWriter(writer)
table.SetHeader([]string{"Action", "Logical ID", "Physical ID", "Resource type", "Replacement"})
table.SetHeaderColor(
tablewriter.Colors{tablewriter.Bold},
tablewriter.Colors{tablewriter.Bold},
tablewriter.Colors{tablewriter.Bold},
tablewriter.Colors{tablewriter.Bold},
tablewriter.Colors{tablewriter.Bold},
)
actionMap := make(map[string]int)
for _, v := range changes {
var physicalID string
var replacement string
if v.ResourceChange.PhysicalResourceId != nil {
physicalID = *v.ResourceChange.PhysicalResourceId
} else {
physicalID = "-"
}
if v.ResourceChange.Replacement != "" {
replacement = string(v.ResourceChange.Replacement)
} else {
replacement = "-"
}
if v.ResourceChange.Action == "Add" {
actionMap["add"]++
} else if v.ResourceChange.Action == "Remove" {
actionMap["destroy"]++
} else if v.ResourceChange.Action == "Modify" {
actionMap["change"]++
}
arr := []string{
string(v.ResourceChange.Action),
*v.ResourceChange.LogicalResourceId,
physicalID,
*v.ResourceChange.ResourceType,
replacement,
}
tableData = append(tableData, arr)
}
for i := range tableData {
switch tableData[i][0] {
case "Add":
table.Rich(tableData[i], []tablewriter.Colors{{tablewriter.Normal, tablewriter.FgHiGreenColor}})
case "Delete":
table.Rich(tableData[i], []tablewriter.Colors{{tablewriter.Normal, tablewriter.FgHiRedColor}})
case "Modify":
table.Rich(tableData[i], []tablewriter.Colors{{tablewriter.Normal, tablewriter.FgHiYellowColor}})
default:
table.Append(tableData[i])
}
}
whiteBold := color.New(color.Bold).SprintFunc()
fmt.Fprintf(writer, "\nCfnctl will perform the following actions:\n\n")
var modifications bool
if len(changes) != 0 {
modifications = true
table.Render()
} else {
modifications = false
}
fmt.Fprintf(writer, "\n%s %d to add, %d to change, %d to destroy\n\n", whiteBold("Plan:"), actionMap["add"], actionMap["change"], actionMap["destroy"])
pc := planChanges{
containsChanges: modifications,
changes: actionMap,
}
return pc
}
// Plan gives a plan output of changes to be made from a given CF template
func Plan(ctl *client.Cfnctl, deleteChangeSet bool) (planChanges, error) {
pc := planChanges{}
// if vars file is supplied
if ctl.VarsFile != "" {
out, err := params.MergeFileParams(ctl.VarsFile)
ctl.Parameters = out
if err != nil {
return pc, err
}
err = ctl.CreateChangeSet()
if err != nil {
return pc, err
}
} else {
// no vars file. check if tempalte contains params
ok, outParams, err := params.CheckInputParams(ctl.TemplatePath)
if err != nil {
return pc, err
}
// no input params or default value set
if !ok {
// create change set
err = ctl.CreateChangeSet()
if err != nil {
return pc, err
}
} else {
// get user input
out, err := params.BuildInputParams(outParams)
if err != nil {
return pc, err
}
ctl.Parameters = out
err = ctl.CreateChangeSet()
if err != nil {
return pc, err
}
}
}
// needs to be improved
count := 15
for i := 0; i < count; i++ {
time.Sleep(1 * time.Second)
status, err := ctl.ListChangeSet()
if err != nil {
return pc, err
}
if status == "CREATE_COMPLETE" {
break
}
}
createEvents, err := ctl.DescribeChangeSet()
if err != nil {
return pc, err
}
pc = planOutput(createEvents, ctl.Output)
// clean up changeset
if deleteChangeSet {
err = ctl.DeleteChangeSet()
if err != nil {
return pc, err
}
}
return pc, nil
}