Commit-Confirm Mechanic for PND

Description

This MR introduces a commit-confirm mechanic for changes to ONDs. A change created in a pending-state. A commit of this change by the operator pushed the change to the given OND. If the commit is not confirmed within 10 minutes (default. Use the GOSDN_CHANGE_TIMEOUT environment variable to change the timeout) is is rolled back automatically.

Related Issue

Closes #99 (closed)

Motivation and Context

How Has This Been Tested?

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

cli/http.go

@@ -3,11 +3,12 @@ package cli
 import (
 	"errors"
 	"fmt"
-	log "github.com/sirupsen/logrus"
-	"github.com/spf13/viper"
 	"io/ioutil"
 	"net/http"
 	"strings"
+
+	log "github.com/sirupsen/logrus"
+	"github.com/spf13/viper"
 )
 
 const apiRoot = "?"
@@ -26,6 +27,7 @@ func HTTPGet(apiEndpoint, f string, args ...string) error {
 	}
 	resp, err := http.Get(apiEndpoint + apiRoot + "q=" + f + builder.String())
 	if err != nil {
+		log.Info(fmt.Sprintf("Err: %s", err))
 		return err
 	}
 	builder.Reset()
@@ -38,8 +40,8 @@ func HTTPGet(apiEndpoint, f string, args ...string) error {
 		}
 		switch f {
 		case "init":
-			pnd := string(bytes[:36])
-			sbi := string(bytes[36:])
+			pnd := string(bytes[9:45])
+			sbi := string(bytes[55:91])
 			viper.Set("CLI_PND", pnd)
 			viper.Set("CLI_SBI", sbi)
 			err := viper.WriteConfig()
@@ -49,6 +51,7 @@ func HTTPGet(apiEndpoint, f string, args ...string) error {
 		default:
 			fmt.Println(string(bytes))
 		}
+
 	case http.StatusCreated:
 		defer resp.Body.Close()
 		bytes, err := ioutil.ReadAll(resp.Body)
@@ -58,8 +61,8 @@ func HTTPGet(apiEndpoint, f string, args ...string) error {
 		uuid := string(bytes[19:55])
 		viper.Set("LAST_DEVICE_UUID", uuid)
 		fmt.Println(string(bytes))
-	case http.StatusAccepted:
 
+	case http.StatusAccepted:
 	default:
 		log.WithFields(log.Fields{
 			"status code": resp.StatusCode,