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action.go
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action.go
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package goterraform
import (
"os/exec"
"strings"
"bufio"
"fmt"
"sort"
)
type TerraformActionParams interface {
Opts() map[string][]string
OptsString() string
OptsStringSlice() []string
}
type TerraformAction struct {
Cmd *exec.Cmd
Dir string
out *TerraformOutput
action string
bin *TerraformCli
opts map[string]string
logs *OutputLog
params TerraformActionParams
}
func (a *TerraformAction) Initialise() *TerraformAction {
args := append([]string{a.action}, a.params.OptsStringSlice()...)
fmt.Printf("%s\n", args)
a.Cmd = exec.Command(a.bin.path, args...)
if a.Dir != "" {
a.Cmd.Dir = a.Dir
}
a.out = &TerraformOutput{}
return a
}
// Run the terraform command
func (a *TerraformAction) Run() (err error) {
return a.Cmd.Start()
}
func (a *TerraformAction) InitLogger(log *OutputLog) (err error) {
a.logs = log
// Configure stdout capture
if a.out.Stdout, err = a.Cmd.StdoutPipe(); err != nil {
return
}
scannerStdout := bufio.NewScanner(a.out.Stdout)
go func() {
for scannerStdout.Scan() {
fmt.Print(
a.logs.Stdout(scannerStdout.Text()).String() + "\n",
)
}
}()
// Configure stderr capture
if a.out.Stderr, err = a.Cmd.StderrPipe(); err != nil {
return
}
scannerStderr := bufio.NewScanner(a.out.Stderr)
go func() {
for scannerStderr.Scan() {
fmt.Print(
a.logs.Stderr(scannerStderr.Text()).String() + "\n",
)
}
}()
return
}
func BoolPtr(a bool) *bool {
return &a
}
func TruePtr() *bool {
return BoolPtr(true)
}
func FalsePtr() *bool {
return BoolPtr(false)
}
func StringPtr(a string) *string {
return &a
}
func IntPtr(a int) *int {
return &a
}
func StringSlice(a []*string) (o []string) {
o = make([]string, len(a))
for i, e := range a {
o[i] = *e
}
return
}
func StringMapPtr(a map[string]string) *map[string]string {
return &a
}
func extractOptsStringSlice(p TerraformActionParams) (options []string) {
opts := p.Opts()
keys := mapStringSliceKeys(opts)
sort.Strings(keys)
outputs := make([]string, 0)
for _, key := range keys {
value := opts[key]
sort.Strings(value)
for _, val := range value {
output := "-" + key
if val != "" {
switch key {
case "var":
outputs = append(outputs, output)
outputs = append(outputs, "'"+val+"'")
continue
default:
output = output + "=" + val
}
}
outputs = append(outputs, output)
}
}
return outputs
}
func extractOptsString(p TerraformActionParams) (options string) {
return strings.Join(
extractOptsStringSlice(p),
" ",
)
}
func mapStringSliceKeys(s map[string][]string) (keys []string) {
keys = make([]string, len(s))
i := 0
for k := range s {
keys[i] = k
i++
}
return
}