Add queue as subcmd

app/cmd/queue.go

+package cmd
+
+import (
+	"fmt"
+	"log"
+
+	"github.com/linuxsuren/jenkins-cli/client"
+	"github.com/spf13/cobra"
+)
+
+type QueueOption struct {
+	OutputOption
+}
+
+var queueOption QueueOption
+
+func init() {
+	rootCmd.AddCommand(queueCmd)
+	queueCmd.PersistentFlags().StringVarP(&queueOption.Format, "output", "o", "json", "Format the output")
+}
+
+var queueCmd = &cobra.Command{
+	Use:   "queue",
+	Short: "Print the queue of your Jenkins",
+	Long:  `Print the queue of your Jenkins`,
+	Run: func(cmd *cobra.Command, args []string) {
+		jenkins := getCurrentJenkins()
+		jclient := &client.QueueClient{}
+		jclient.URL = jenkins.URL
+		jclient.UserName = jenkins.UserName
+		jclient.Token = jenkins.Token
+
+		if status, err := jclient.Get(); err == nil {
+			var data []byte
+			if data, err = Format(status, queueOption.Format); err == nil {
+				fmt.Printf("%s\n", string(data))
+			} else {
+				log.Fatal(err)
+			}
+		} else {
+			log.Fatal(err)
+		}
+	},
+}

client/queue.go

+package client
+
+import (
+	"crypto/tls"
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"log"
+	"net/http"
+)
+
+type QueueClient struct {
+	JenkinsCore
+}
+
+func (q *QueueClient) Get() (status *JobQueue, err error) {
+	api := fmt.Sprintf("%s/queue/api/json", q.URL)
+	var (
+		req      *http.Request
+		response *http.Response
+	)
+
+	req, err = http.NewRequest("GET", api, nil)
+	if err == nil {
+		q.AuthHandle(req)
+	} else {
+		return
+	}
+
+	tr := &http.Transport{
+		TLSClientConfig: &tls.Config{InsecureSkipVerify: true},
+	}
+	client := &http.Client{Transport: tr}
+	if response, err = client.Do(req); err == nil {
+		code := response.StatusCode
+		var data []byte
+		data, err = ioutil.ReadAll(response.Body)
+		if code == 200 {
+			if err == nil {
+				status = &JobQueue{}
+				err = json.Unmarshal(data, status)
+			}
+		} else {
+			log.Fatal(string(data))
+		}
+	} else {
+		log.Fatal(err)
+	}
+	return
+}
+
+type JobQueue struct {
+	Items []QueueItem
+}
+
+type QueueItem struct {
+	Blocked                    bool
+	Buildable                  bool
+	ID                         int
+	Params                     string
+	Pending                    bool
+	Stuck                      bool
+	URL                        string
+	Why                        string
+	BuildableStartMilliseconds int64
+	InQueueSince               int64
+	Actions                    []CauseAction
+}
+
+type CauseAction struct {
+	Causes []Cause
+}
+
+type Cause struct {
+	UpstreamUrl      string
+	UpstreamProject  string
+	UpstreamBuild    int
+	ShortDescription string
+}