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devops.go
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devops.go
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package main
import (
"bytes"
"flag"
"fmt"
"io/ioutil"
"log"
"net/http"
"os"
"strconv"
"sync"
"time"
)
var verbose, noUpload bool
var semesterFilter bool
var port int
// Devops details
var devOpsAccount, devOpsProject, devOpsToken, devOpsRepo string
// Azure Storage
var azStorageAcc, azStorageKey string
const (
defaultPrCount = 200
maxPrCount = 1000
defaultEpicWitQuery = "0325c50f-3511-4266-a9fe-80b989492c76"
)
// Log provides global logging
var (
Info *log.Logger
Warning *log.Logger
Error *log.Logger
)
func main() {
// Setup command line parsing
flag.BoolVar(&verbose, "v", false, "Show verbose output")
flag.BoolVar(&noUpload, "nu", false, "Do not upload generated data into Azure")
flag.BoolVar(&semesterFilter, "sem", true, "Filter workitems not finished in this semester")
flag.IntVar(&port, "port", 80, "Port where the http server will listen")
flag.Parse()
logFlags := log.Ldate | log.Ltime
if verbose {
Info = log.New(os.Stdout, "INF: ", logFlags)
} else {
Info = log.New(ioutil.Discard, "INF: ", logFlags)
}
Warning = log.New(os.Stdout, "WRN: ", logFlags)
Error = log.New(os.Stderr, "ERR: ", logFlags)
// Fetch the access stuff from environment
devOpsAccount = os.Getenv("AZUREDEVOPS_ACCOUNT")
devOpsProject = os.Getenv("AZUREDEVOPS_PROJECT")
devOpsToken = os.Getenv("AZUREDEVOPS_TOKEN")
devOpsRepo = os.Getenv("AZUREDEVOPS_REPO")
azStorageAcc = os.Getenv("AZURE_STORAGE_ACCOUNT")
azStorageKey = os.Getenv("AZURE_STORAGE_ACCESS_KEY")
if len(devOpsAccount) == 0 || len(devOpsProject) == 0 || len(devOpsToken) == 0 || len(devOpsRepo) == 0 ||
len(azStorageAcc) == 0 || len(azStorageKey) == 0 {
Error.Println("Environment not setup")
os.Exit(1)
}
addr := fmt.Sprintf(":%v", port)
Info.Printf("Starting to listen on %v", port)
http.HandleFunc("/", rootHandler)
http.HandleFunc("/wit", witHandler)
http.HandleFunc("/pr", prHandler)
log.Fatal(http.ListenAndServe(addr, nil))
}
// ================================================================================================
// Workitem
func showWorkStats(acc, proj, token string, azStorageAcc, azStorageKey string, epicWitQuery string) (bytes.Buffer, error) {
var buffer bytes.Buffer
// Get the list of epics from a epic's only query
Info.Printf("Fetching epics using query %v\n", epicWitQuery)
parentEpics, err := getEpics(acc, proj, token, epicWitQuery)
if err != nil {
return buffer, err
}
var epicStats []EpicStat
// For each epic start a go-routine and fetch all workitems that are child of it
var wg sync.WaitGroup
m := &sync.Mutex{}
for _, epic := range parentEpics {
Info.Printf("Fetching epic %v: %v\n", epic.Id, epic.Title)
wg.Add(1)
go func(epic int, m *sync.Mutex) {
defer wg.Done()
epicStat, err := getEpicStat(acc, proj, token, epic)
m.Lock()
defer m.Unlock()
if err != nil {
Error.Println("Error getting stat for epic", epic)
return
}
epicStats = append(epicStats, epicStat)
Info.Println("Fetched epic", epic)
}(epic.Id, m)
}
Info.Println("Starting wait for epic fetch to finish")
wg.Wait()
var maxBars float32 = 120.0
var maxCount float32
for _, e := range epicStats {
count := float32(e.Done + e.InProgress + e.NotDone + e.Unknown)
if count > maxCount {
maxCount = count
}
}
for _, e := range epicStats {
str := fmt.Sprintf("%v: %v (%v)\n", e.Epic.Id, e.Epic.Title, e.Epic.AssignedTo)
buffer.WriteString(str)
str = fmt.Sprintf("Done:%v InProgress:%v ToDo:%v Unknown:%v\n", e.Done, e.InProgress, e.NotDone, e.Unknown)
buffer.WriteString(str)
conv := maxBars / maxCount
drawBars(&buffer, '#', conv*float32(e.Done))
drawBars(&buffer, '=', conv*float32(e.InProgress))
drawBars(&buffer, '-', conv*float32(e.NotDone))
drawBars(&buffer, '.', conv*float32(e.Unknown))
buffer.WriteString("\n\n")
}
// We support uploading 1 file per day
fileName := "epicstat_" + time.Now().Format("2006-01-02") + ".png"
err = saveWitStatImage(epicStats, fileName)
if err != nil {
return buffer, err
}
if !noUpload {
url, err := uploadImageToAzure(azStorageAcc, azStorageKey, fileName)
if err != nil {
return buffer, err
}
Info.Println("Uploaded to", url)
}
return buffer, nil
}
func getEpics(acc, proj, token, queryID string) ([]WorkItem, error) {
q := NewWork(acc, proj, token)
epics, err := q.GetWorkitems(queryID)
if err != nil {
return nil, err
}
return epics, nil
}
func getEpicStat(acc, proj, token string, parentEpic int) (EpicStat, error) {
q := NewWork(acc, proj, token)
stats, err := q.RefreshWit(parentEpic, semesterFilter)
return stats, err
}
func drawBars(buffer *bytes.Buffer, ch rune, count float32) {
for i := 0; i < int(count); i++ {
buffer.WriteRune(ch)
}
}
// ================================================================================================
// PR
func showPrStats(acc, proj, token, repo string, count int, azStorageAcc, azStorageKey string) (bytes.Buffer, error) {
r := NewRepo(acc, proj, token, repo)
var buffer bytes.Buffer
if r.err != nil {
return buffer, r.err
}
// Fetch PRs
revStats, max := r.GetPullRequestReviewsByUser(count)
barmax := float32(80.0)
// Output!!
buffer.WriteString("\nReviewer Stats\n\n")
for _, revStat := range revStats {
bar := int((barmax / float32(max)) * float32(revStat.Count))
percentage := float32(revStat.Count) / float32(count) * 100.0
buffer.WriteString(fmt.Sprintf("%30s %4d (%4.1f%%) ", revStat.Name, revStat.Count, percentage))
buffer.WriteString("[")
i := 0
for ; i < bar; i++ {
buffer.WriteRune('#')
}
for ; i < int(barmax); i++ {
buffer.WriteRune('-')
}
buffer.WriteString("]\n")
}
fileName := "revstat_" + time.Now().Format("2006-01-02") + ".png"
err := savePrStatImage(revStats, count, fileName)
if err != nil {
return buffer, err
}
if !noUpload {
url, err := uploadImageToAzure(azStorageAcc, azStorageKey, fileName)
if err != nil {
return buffer, err
}
Info.Println("Uploaded to", url)
}
return buffer, nil
}
// ================================================================================================
// Http
func showRequest(r *http.Request) {
Info.Printf("Request for %s from %s(%s)", r.RequestURI, r.RemoteAddr, r.UserAgent())
}
func rootHandler(w http.ResponseWriter, r *http.Request) {
showRequest(r)
w.Header().Set("Content-Type", "text/plain")
w.WriteHeader(http.StatusOK)
w.Write([]byte("Welcome to DevOps tools from @abhinaba\nUse /pr and /wit\n"))
}
func prHandler(w http.ResponseWriter, r *http.Request) {
showRequest(r)
prCount, err := getIntQueryParam("count", w, r, defaultPrCount)
if err != nil {
Error.Printf("Error!! %v %v\n", r.URL, err)
return
}
if prCount > maxPrCount || prCount <= 0 {
writeError(w, "Invalid count range")
return
}
buffer, err1 := showPrStats(devOpsAccount, devOpsProject, devOpsToken, devOpsRepo, prCount, azStorageAcc, azStorageKey)
if err1 != nil {
str := fmt.Sprintf("Error fetching pull-request stats: %v", err)
w.WriteHeader(http.StatusInternalServerError)
w.Header().Set("Content-Type", "text/plain")
w.Write([]byte(str))
}
buffer.WriteString(fmt.Sprintf("Processed %v pull-requests\n", prCount))
w.WriteHeader(http.StatusOK)
w.Write(buffer.Bytes())
}
func witHandler(w http.ResponseWriter, r *http.Request) {
showRequest(r)
queryId, _ := getStringQueryParam("queryid", w, r, defaultEpicWitQuery)
buffer, err := showWorkStats(devOpsAccount, devOpsProject, devOpsToken, azStorageAcc, azStorageKey, queryId)
if err != nil {
str := fmt.Sprintf("Error fetching work stats: %v", err)
w.WriteHeader(http.StatusInternalServerError)
w.Header().Set("Content-Type", "text/plain")
w.Write([]byte(str))
return
}
w.WriteHeader(http.StatusOK)
w.Write(buffer.Bytes())
}
func getIntQueryParam(name string, w http.ResponseWriter, r *http.Request, defaultValue int) (int, error) {
i := defaultValue
if keys, ok := r.URL.Query()[name]; ok {
if len(keys) > 0 {
var err error
i, err = strconv.Atoi(keys[0])
if err != nil {
writeError(w, "Integer param count expected")
return i, fmt.Errorf("Integer param count expected")
}
}
}
return i, nil
}
func getStringQueryParam(name string, w http.ResponseWriter, r *http.Request, defaultValue string) (string, error) {
str := defaultValue
if keys, ok := r.URL.Query()[name]; ok {
if len(keys) > 0 {
str = keys[0]
}
}
return str, nil
}
func writeError(w http.ResponseWriter, message string) {
w.WriteHeader(http.StatusBadRequest)
w.Header().Set("Content-Type", "text/plain")
w.Write([]byte(message))
}