packer-plugin-xenserver/builder/xenserver/common/http_upload.go

128 lines
3.3 KiB
Go

package common
import (
"crypto/tls"
"fmt"
"log"
"net/http"
"net/url"
"os"
"time"
"github.com/hashicorp/packer-plugin-sdk/multistep"
"github.com/hashicorp/packer-plugin-sdk/packer"
xsclient "github.com/terra-farm/go-xen-api-client"
)
func appendQuery(urlstring, k, v string) (string, error) {
u, err := url.Parse(urlstring)
if err != nil {
return "", fmt.Errorf("Unable to parse URL '%s': %s", urlstring, err.Error())
}
m := u.Query()
m.Add(k, v)
u.RawQuery = m.Encode()
return u.String(), err
}
func HTTPUpload(import_url string, fh *os.File, state multistep.StateBag) (result string, err error) {
ui := state.Get("ui").(packer.Ui)
c := state.Get("client").(*Connection)
task, err := c.client.Task.Create(c.session, "packer-task", "Packer task")
if err != nil {
err = fmt.Errorf("Unable to create task: %s", err.Error())
return
}
defer c.client.Task.Destroy(c.session, task)
import_task_url, err := appendQuery(import_url, "task_id", string(task))
if err != nil {
return
}
// Get file length
fstat, err := fh.Stat()
if err != nil {
err = fmt.Errorf("Unable to stat '%s': %s", fh.Name(), err.Error())
return
}
fileLength := fstat.Size()
// Define a new transport which allows self-signed certs
tr := &http.Transport{
TLSClientConfig: &tls.Config{InsecureSkipVerify: true},
}
// Create a client
httpClient := &http.Client{Transport: tr}
// Create request and download file
request, err := http.NewRequest("PUT", import_task_url, fh)
request.ContentLength = fileLength
ui.Say(fmt.Sprintf("PUT '%s'", import_task_url))
resp, err := httpClient.Do(request) // Do closes fh for us, according to docs
if err != nil {
return
}
if resp.StatusCode != 200 {
err = fmt.Errorf("PUT request got non-200 status code: %s", resp.Status)
return
}
logIteration := 0
err = InterruptibleWait{
Predicate: func() (bool, error) {
status, err := c.client.Task.GetStatus(c.session, task)
if err != nil {
return false, fmt.Errorf("Failed to get task status: %s", err.Error())
}
switch status {
case xsclient.TaskStatusTypePending:
progress, err := c.client.Task.GetProgress(c.session, task)
if err != nil {
return false, fmt.Errorf("Failed to get progress: %s", err.Error())
}
logIteration = logIteration + 1
if logIteration%5 == 0 {
log.Printf("Upload %.0f%% complete", progress*100)
}
return false, nil
case xsclient.TaskStatusTypeSuccess:
return true, nil
case xsclient.TaskStatusTypeFailure:
errorInfo, err := c.client.Task.GetErrorInfo(c.session, task)
if err != nil {
errorInfo = []string{fmt.Sprintf("furthermore, failed to get error info: %s", err.Error())}
}
return false, fmt.Errorf("Task failed: %s", errorInfo)
case xsclient.TaskStatusTypeCancelling, xsclient.TaskStatusTypeCancelled:
return false, fmt.Errorf("Task cancelled")
default:
return false, fmt.Errorf("Unknown task status %v", status)
}
},
PredicateInterval: 1 * time.Second,
Timeout: 24 * time.Hour,
}.Wait(state)
resp.Body.Close()
if err != nil {
err = fmt.Errorf("Error uploading: %s", err.Error())
return
}
result, err = c.client.Task.GetResult(c.session, task)
if err != nil {
err = fmt.Errorf("Error getting result: %s", err.Error())
return
}
log.Printf("Upload complete")
return
}