pkg/errors

config/config.go

@@ -20,9 +20,8 @@ type Config struct {
 
 // Get the config
 func Get() (cfg Config) {
-	var err = env.Parse(&cfg)
-	if err != nil {
-		log.WithError(err).Fatal("failed to laod config")
+	if err := env.Parse(&cfg); err != nil {
+		log.WithError(err).Fatal("failed to load config")
 	}
 	return
 }

datastore/database/tokens.go

@@ -5,6 +5,7 @@ import (
 	"time"
 
 	"github.com/jmoiron/sqlx"
+	"github.com/pkg/errors"
 	"golang.org/x/oauth2"
 )
 
@@ -48,7 +49,7 @@ func (db *Tokenstore) Schedule(userID int64, date time.Time) error {
 func tokenToJSON(token *oauth2.Token) (string, error) {
 	d, err := json.Marshal(token)
 	if err != nil {
-		return "", err
+		return "", errors.Wrap(err, "failed to marshall json token")
 	}
 	return string(d), nil
 }

github/email/email.go

@@ -2,16 +2,16 @@ package email
 
 import (
 	"context"
-	"errors"
 
 	"github.com/google/go-github/github"
+	"github.com/pkg/errors"
 )
 
 // Get the primary and verified user email
 func Get(ctx context.Context, client *github.Client) (email string, err error) {
 	emails, _, err := client.Users.ListEmails(ctx, &github.ListOptions{PerPage: 10})
 	if err != nil {
-		return
+		return email, errors.Wrap(err, "failed to get current user email addresses")
 	}
 	for _, e := range emails {
 		if *e.Primary && *e.Verified {

github/followers/get.go

@@ -4,6 +4,7 @@ import (
 	"context"
 
 	"github.com/google/go-github/github"
+	"github.com/pkg/errors"
 )
 
 // Get the list of followers of a given user
@@ -15,7 +16,7 @@ func Get(
 	for {
 		followers, nextPage, err := getPage(ctx, client, opt)
 		if err != nil {
-			return result, err
+			return result, errors.Wrap(err, "failed to get followers")
 		}
 		result = append(result, followers...)
 		if opt.Page = nextPage; nextPage == 0 {

github/repos/get.go

@@ -4,6 +4,7 @@ import (
 	"context"
 
 	"github.com/google/go-github/github"
+	"github.com/pkg/errors"
 )
 
 // Get all user's repos
@@ -17,7 +18,7 @@ func Get(
 	for {
 		repos, nextPage, err := getPage(ctx, client, opt)
 		if err != nil {
-			return result, err
+			return result, errors.Wrap(err, "failed to get repositories")
 		}
 		for _, repo := range repos {
 			if repo.GetFork() || repo.GetPrivate() {

github/stargazers/get.go

@@ -6,6 +6,7 @@ import (
 
 	"github.com/caarlos0/watchub/shared/model"
 	"github.com/google/go-github/github"
+	"github.com/pkg/errors"
 	"golang.org/x/sync/errgroup"
 )
 
@@ -22,7 +23,7 @@ func Get(
 		g.Go(func() error {
 			r, er := processRepo(ctx, client, repo)
 			if er != nil {
-				return er
+				return errors.Wrap(er, "failed to get repository stars")
 			}
 			m.Lock()
 			defer m.Unlock()

glide.yaml

@@ -27,6 +27,8 @@ import:
   - errgroup
 - package: github.com/gorilla/sessions
   version: v1.1
+- package: github.com/pkg/errors
+  version: ~0.8.0
 testImport:
 - package: github.com/stretchr/testify
   version: v1.1.4

main.go

@@ -80,5 +80,7 @@ func main() {
 		ReadTimeout:  15 * time.Second,
 	}
 	log.WithField("addr", server.Addr).Info("started")
-	log.WithError(server.ListenAndServe()).Error("failed to start up server")
+	if err := server.ListenAndServe(); err != nil {
+		log.WithError(err).Fatal("failed to start up server")
+	}
 }

shared/token/extract.go

@@ -3,13 +3,15 @@ package token
 import (
 	"encoding/json"
 
+	"github.com/pkg/errors"
 	"golang.org/x/oauth2"
 )
 
+// FromJSON extract an oauth from a json string
 func FromJSON(str string) (*oauth2.Token, error) {
 	var token oauth2.Token
 	if err := json.Unmarshal([]byte(str), &token); err != nil {
-		return nil, err
+		return nil, errors.Wrap(err, "failed unmarshall json token")
 	}
 	return &token, nil
 }