some improvements

Author: lunny

routers/web/repo/code_frequency.go

@@ -4,7 +4,6 @@
 package repo
 
 import (
-	"errors"
 	"net/http"
 
 	"code.gitea.io/gitea/modules/templates"
@@ -30,10 +29,6 @@ func CodeFrequency(ctx *context.Context) {
 // CodeFrequencyData returns JSON of code frequency data
 func CodeFrequencyData(ctx *context.Context) {
 	if contributorStats, err := contributors_service.GetContributorStats(ctx, ctx.Cache, ctx.Repo.Repository, ctx.Repo.Repository.DefaultBranch); err != nil {
-		if errors.Is(err, contributors_service.ErrAwaitGeneration) {
-			ctx.Status(http.StatusAccepted)
-			return
-		}
 		ctx.ServerError("GetCodeFrequencyData", err)
 	} else {
 		ctx.JSON(http.StatusOK, contributorStats["total"].Weeks)

routers/web/repo/contributors.go

@@ -4,8 +4,6 @@
 package repo
 
 import (
-	std_ctx "context"
-	"errors"
 	"net/http"
 
 	"code.gitea.io/gitea/modules/templates"
@@ -28,10 +26,6 @@ func Contributors(ctx *context.Context) {
 // ContributorsData renders JSON of contributors along with their weekly commit statistics
 func ContributorsData(ctx *context.Context) {
 	if contributorStats, err := contributors_service.GetContributorStats(ctx, ctx.Cache, ctx.Repo.Repository, ctx.Repo.Repository.DefaultBranch); err != nil {
-		if errors.Is(err, contributors_service.ErrAwaitGeneration) || errors.Is(err, std_ctx.DeadlineExceeded) {
-			ctx.Status(http.StatusAccepted)
-			return
-		}
 		ctx.ServerError("GetContributorStats", err)
 	} else {
 		ctx.JSON(http.StatusOK, contributorStats)

routers/web/repo/recent_commits.go

@@ -4,7 +4,6 @@
 package repo
 
 import (
-	"errors"
 	"net/http"
 
 	"code.gitea.io/gitea/modules/templates"
@@ -30,10 +29,6 @@ func RecentCommits(ctx *context.Context) {
 // RecentCommitsData returns JSON of recent commits data
 func RecentCommitsData(ctx *context.Context) {
 	if contributorStats, err := contributors_service.GetContributorStats(ctx, ctx.Cache, ctx.Repo.Repository, ctx.Repo.Repository.DefaultBranch); err != nil {
-		if errors.Is(err, contributors_service.ErrAwaitGeneration) {
-			ctx.Status(http.StatusAccepted)
-			return
-		}
 		ctx.ServerError("RecentCommitsData", err)
 	} else {
 		ctx.JSON(http.StatusOK, contributorStats["total"].Weeks)

services/repository/contributors_graph.go

@@ -29,10 +29,7 @@ const (
 	contributorStatsCacheTimeout int64 = 60 * 10
 )
 
-var (
-	ErrAwaitGeneration  = errors.New("generation took longer than ")
-	awaitGenerationTime = time.Second * 60
-)
+var ErrAwaitGeneration = errors.New("generation took longer than ")
 
 type WeekData struct {
 	Week      int64 `json:"week"`      // Starting day of the week as Unix timestamp
@@ -95,19 +92,18 @@ func GetContributorStats(ctx context.Context, cache cache.StringCache, repo *rep
 	}
 	defer releaser()
 
-	// set a timeout for the generation
-	ctx, cancel := context.WithTimeout(ctx, awaitGenerationTime)
-	defer cancel()
+	// check if generation is already completed by other request
+	if cache.IsExist(cacheKey) {
+		var res map[string]*ContributorData
+		if _, cacheErr := cache.GetJSON(cacheKey, &res); cacheErr != nil {
+			return nil, fmt.Errorf("cached error: %w", cacheErr.ToError())
+		}
+		return res, nil
+	}
 
 	// run generation async
 	res, err := generateContributorStats(ctx, cache, cacheKey, repo, revision)
 	if err != nil {
-		switch {
-		case errors.Is(err, context.DeadlineExceeded):
-			_ = cache.PutJSON(cacheKey, fmt.Errorf("generateContributorStats: %w", ErrAwaitGeneration), contributorStatsCacheTimeout)
-		default:
-			_ = cache.PutJSON(cacheKey, fmt.Errorf("generateContributorStats: %w", err), contributorStatsCacheTimeout)
-		}
 		return nil, err
 	}