terraform/plans/planfile/writer.go

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package planfile
import (
"archive/zip"
"fmt"
"os"
"time"
"github.com/hashicorp/terraform/configs/configload"
"github.com/hashicorp/terraform/plans"
"github.com/hashicorp/terraform/states/statefile"
)
// Create creates a new plan file with the given filename, overwriting any
// file that might already exist there.
//
// A plan file contains both a snapshot of the configuration and of the latest
// state file in addition to the plan itself, so that Terraform can detect
// if the world has changed since the plan was created and thus refuse to
// apply it.
func Create(filename string, configSnap *configload.Snapshot, stateFile *statefile.File, plan *plans.Plan) error {
f, err := os.Create(filename)
if err != nil {
return err
}
defer f.Close()
zw := zip.NewWriter(f)
defer zw.Close()
// tfplan file
{
w, err := zw.CreateHeader(&zip.FileHeader{
Name: tfplanFilename,
Method: zip.Deflate,
Modified: time.Now(),
})
if err != nil {
return fmt.Errorf("failed to create tfplan file: %s", err)
}
err = writeTfplan(plan, w)
if err != nil {
return fmt.Errorf("failed to write plan: %s", err)
}
}
// tfstate file
{
w, err := zw.CreateHeader(&zip.FileHeader{
Name: tfstateFilename,
Method: zip.Deflate,
Modified: time.Now(),
})
if err != nil {
return fmt.Errorf("failed to create embedded tfstate file: %s", err)
}
err = statefile.Write(stateFile, w)
if err != nil {
return fmt.Errorf("failed to write state snapshot: %s", err)
}
}
// tfconfig directory
{
err := writeConfigSnapshot(configSnap, zw)
if err != nil {
return fmt.Errorf("failed to write config snapshot: %s", err)
}
}
return nil
}