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ls.go
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ls.go
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package ls
import (
"fmt"
"sort"
"github.com/aws-cloudformation/rain/internal/config"
"github.com/aws-cloudformation/rain/internal/ui"
"github.com/aws-cloudformation/rain/internal/aws"
"github.com/aws-cloudformation/rain/internal/aws/cfn"
"github.com/aws-cloudformation/rain/internal/aws/ec2"
"github.com/aws-cloudformation/rain/internal/console"
"github.com/aws-cloudformation/rain/internal/console/spinner"
"github.com/aws/aws-sdk-go-v2/service/cloudformation/types"
"github.com/spf13/cobra"
)
var all = false
var changeset = false
func ShowChangeSetsForStack(stackName string) error {
sets, err := cfn.ListChangeSets(stackName)
if err != nil {
return err
}
if len(sets) == 0 {
return nil
}
fmt.Printf(" %s\n", stackName)
for _, cs := range sets {
if cs.ChangeSetName == nil {
continue
}
fmt.Printf(" %s %v/%v\n",
*cs.ChangeSetName,
ui.ColouriseStatus(string(cs.ExecutionStatus)),
ui.ColouriseStatus(string(cs.Status)))
}
return nil
}
// Cmd is the ls command's entrypoint
var Cmd = &cobra.Command{
Use: "ls <stack> [changeset]",
Short: "List running CloudFormation stacks or changesets",
Long: "Displays a list of all running stacks or the contents of <stack> if provided. If the -c arg is supplied, operates on changesets instead of stacks",
Args: cobra.MaximumNArgs(2),
Aliases: []string{"list"},
DisableFlagsInUseLine: true,
Run: func(cmd *cobra.Command, args []string) {
if len(args) > 0 {
if changeset {
// Get the status of a single changeset
if len(args) != 2 {
panic("Usage: rain ls -c stackName changeSetName")
}
stackName := args[0]
changeSetName := args[1]
showChangeset(stackName, changeSetName)
return
}
// Get the status for a single stack
stackName := args[0]
spinner.Push("Fetching stack status")
stack, err := cfn.GetStack(stackName)
if err != nil {
panic(ui.Errorf(err, "failed to list stack '%s'", stackName))
}
output := cfn.GetStackSummary(stack, all)
spinner.Pop()
fmt.Println(output)
fmt.Println(console.Yellow(" ChangeSets:"))
err = ShowChangeSetsForStack(*stack.StackName)
if err != nil {
panic(err)
}
} else {
// List all stacks or changesets
var err error
regions := []string{aws.Config().Region}
if all {
spinner.Push("Fetching region list")
regions, err = ec2.GetRegions()
if err != nil {
panic(ui.Errorf(err, "unable to get region list"))
}
spinner.Pop()
}
origRegion := aws.Config().Region
for _, region := range regions {
spinner.Push(fmt.Sprintf("Fetching stacks in %s", region))
aws.SetRegion(region)
stacks, err := cfn.ListStacks()
if err != nil {
panic(ui.Errorf(err, "failed to list stacks"))
}
spinner.Pop()
if len(stacks) == 0 && all {
continue
}
stackNames := make(sort.StringSlice, 0)
// For changesets, we need to now call ListChangeSets for
// each stack and see if it has any active changesets
if changeset {
fmt.Println(console.Yellow(fmt.Sprintf("Stacks with changesets in %s:", region)))
for _, stack := range stacks {
if stack.StackName == nil {
continue
}
config.Debugf("Checking stack %s", *stack.StackName)
err := ShowChangeSetsForStack(*stack.StackName)
if err != nil {
panic(err)
}
}
} else {
stackMap := make(map[string]types.StackSummary)
for _, stack := range stacks {
stackNames = append(stackNames, *stack.StackName)
stackMap[*stack.StackName] = stack
}
sort.Strings(stackNames)
fmt.Println(console.Yellow(fmt.Sprintf("CloudFormation stacks in %s:", region)))
for _, stackName := range stackNames {
stack := stackMap[stackName]
if stack.ParentId == nil {
fmt.Println(ui.Indent(" ", formatStack(stack, stackMap)))
}
}
}
}
aws.SetRegion(origRegion)
}
// Reset flags
all = false
},
}
func init() {
Cmd.Flags().BoolVarP(&all, "all", "a", false, "list stacks in all regions; if you specify a stack, show more details")
Cmd.Flags().BoolVarP(&changeset, "changeset", "c", false, "List changesets instead of stacks")
}