回答時にエラーが発生する

[K-shir0]

URL POST

http://localhost:8080/api/problems/30caf019-3a47-4011-b600-d68c092a65b5/answers

リクエストボディ

{"user_group_id":"5240c41a-39bc-4218-af20-4b2cf7c034ae","problem_id":"30caf019-3a47-4011-b600-d68c092a65b5","body":"aaaa"}

エラー

ictsc-rikka-rikka-1  | runtime error: invalid memory address or nil pointer dereference
ictsc-rikka-rikka-1  | /go/pkg/mod/github.com/getsentry/[email protected]/gin/sentrygin.go:72 (0xc3c192)
ictsc-rikka-rikka-1  |  (*handler).recoverWithSentry: panic(err)
ictsc-rikka-rikka-1  | /usr/local/go/src/runtime/panic.go:965 (0x438298)
ictsc-rikka-rikka-1  |  gopanic: done = runOpenDeferFrame(gp, d)
ictsc-rikka-rikka-1  | /usr/local/go/src/runtime/panic.go:212 (0x43669a)
ictsc-rikka-rikka-1  |  panicmem: panic(memoryError)
ictsc-rikka-rikka-1  | /usr/local/go/src/runtime/signal_unix.go:734 (0x44f2f2)
ictsc-rikka-rikka-1  |  sigpanic: panicmem()
ictsc-rikka-rikka-1  | /go/src/ictsc-rikka/pkg/service/answer.go:94 (0x7cb609)
ictsc-rikka-rikka-1  |  (*AnswerService).Create: body, err := io.ReadAll(resp.Body)
ictsc-rikka-rikka-1  | /go/src/ictsc-rikka/pkg/controller/answer.go:33 (0x7d4bda)
ictsc-rikka-rikka-1  |  (*AnswerController).Create: ans, err := c.answerService.Create(&service.CreateAnswerRequest{
ictsc-rikka-rikka-1  | /go/src/ictsc-rikka/pkg/delivery/http/handler/answer.go:48 (0xb8250c)
ictsc-rikka-rikka-1  |  (*AnswerHandler).Create: res, err := h.answerController.Create(group, problem_id, req)
ictsc-rikka-rikka-1  | /go/pkg/mod/github.com/gin-gonic/[email protected]/context.go:165 (0xb8071c)
ictsc-rikka-rikka-1  |  (*Context).Next: c.handlers[c.index](c)
ictsc-rikka-rikka-1  | /go/src/ictsc-rikka/pkg/delivery/http/middleware/auth.go:54 (0xb806fc)
ictsc-rikka-rikka-1  |  Auth.func1: ctx.Next()
ictsc-rikka-rikka-1  | /go/pkg/mod/github.com/gin-gonic/[email protected]/context.go:165 (0xb8071c)
ictsc-rikka-rikka-1  |  (*Context).Next: c.handlers[c.index](c)
ictsc-rikka-rikka-1  | /go/src/ictsc-rikka/pkg/delivery/http/middleware/auth.go:54 (0xb806fc)
ictsc-rikka-rikka-1  |  Auth.func1: ctx.Next()
ictsc-rikka-rikka-1  | /go/pkg/mod/github.com/gin-gonic/[email protected]/context.go:165 (0xb7fe21)
ictsc-rikka-rikka-1  |  (*Context).Next: c.handlers[c.index](c)
ictsc-rikka-rikka-1  | /go/src/ictsc-rikka/pkg/delivery/http/middleware/error.go:19 (0xb7fe01)
ictsc-rikka-rikka-1  |  (*ErrorMiddleware).HandleError: ctx.Next()
ictsc-rikka-rikka-1  | /go/pkg/mod/github.com/gin-gonic/[email protected]/context.go:165 (0xbe1df8)
ictsc-rikka-rikka-1  |  (*Context).Next: c.handlers[c.index](c)
ictsc-rikka-rikka-1  | /go/pkg/mod/github.com/zsais/[email protected]/middleware.go:364 (0xbe1dd8)
ictsc-rikka-rikka-1  |  (*Prometheus).HandlerFunc.func1: c.Next()
ictsc-rikka-rikka-1  | /go/pkg/mod/github.com/gin-gonic/[email protected]/context.go:165 (0xb7f015)
ictsc-rikka-rikka-1  |  (*Context).Next: c.handlers[c.index](c)
ictsc-rikka-rikka-1  | /go/pkg/mod/github.com/gin-contrib/[email protected]/sessions.go:52 (0xb7effd)
ictsc-rikka-rikka-1  |  Sessions.func1: c.Next()
ictsc-rikka-rikka-1  | /go/pkg/mod/github.com/gin-gonic/[email protected]/context.go:165 (0xc3bf50)
ictsc-rikka-rikka-1  |  (*Context).Next: c.handlers[c.index](c)
ictsc-rikka-rikka-1  | /go/pkg/mod/github.com/getsentry/[email protected]/gin/sentrygin.go:57 (0xc3bf38)
ictsc-rikka-rikka-1  |  (*handler).handle: ctx.Next()
ictsc-rikka-rikka-1  | /go/pkg/mod/github.com/gin-gonic/[email protected]/context.go:165 (0xc3ee59)
ictsc-rikka-rikka-1  |  (*Context).Next: c.handlers[c.index](c)
ictsc-rikka-rikka-1  | /go/src/ictsc-rikka/cmd/rikka/main.go:186 (0xc3ee39)
ictsc-rikka-rikka-1  |  main.func1: ctx.Next()
ictsc-rikka-rikka-1  | /go/pkg/mod/github.com/gin-gonic/[email protected]/context.go:165 (0xb7c8f9)
ictsc-rikka-rikka-1  |  (*Context).Next: c.handlers[c.index](c)
ictsc-rikka-rikka-1  | /go/pkg/mod/github.com/gin-gonic/[email protected]/recovery.go:99 (0xb7c8e0)
ictsc-rikka-rikka-1  |  CustomRecoveryWithWriter.func1: c.Next()
ictsc-rikka-rikka-1  | /go/pkg/mod/github.com/gin-gonic/[email protected]/context.go:165 (0xb7b9d3)
ictsc-rikka-rikka-1  |  (*Context).Next: c.handlers[c.index](c)
ictsc-rikka-rikka-1  | /go/pkg/mod/github.com/gin-gonic/[email protected]/logger.go:241 (0xb7b992)
ictsc-rikka-rikka-1  |  LoggerWithConfig.func1: c.Next()
ictsc-rikka-rikka-1  | /go/pkg/mod/github.com/gin-gonic/[email protected]/context.go:165 (0xb71e89)
ictsc-rikka-rikka-1  |  (*Context).Next: c.handlers[c.index](c)
ictsc-rikka-rikka-1  | /go/pkg/mod/github.com/gin-gonic/[email protected]/gin.go:489 (0xb71e6f)
ictsc-rikka-rikka-1  |  (*Engine).handleHTTPRequest: c.Next()
ictsc-rikka-rikka-1  | /go/pkg/mod/github.com/gin-gonic/[email protected]/gin.go:445 (0xb7195b)
ictsc-rikka-rikka-1  |  (*Engine).ServeHTTP: engine.handleHTTPRequest(c)
ictsc-rikka-rikka-1  | /usr/local/go/src/net/http/server.go:2868 (0x7977a2)
ictsc-rikka-rikka-1  |  serverHandler.ServeHTTP: handler.ServeHTTP(rw, req)
ictsc-rikka-rikka-1  | /usr/local/go/src/net/http/server.go:1933 (0x792bcc)
ictsc-rikka-rikka-1  |  (*conn).serve: serverHandler{c.server}.ServeHTTP(w, w.req)
ictsc-rikka-rikka-1  | /usr/local/go/src/runtime/asm_amd64.s:1371 (0x46f080)
ictsc-rikka-rikka-1  |  goexit: BYTE    $0x90   // NOP

[x86taka]

Slackのwebhookに失敗したときの処理が適当だからみたいなので、なんらかのhook用のURLをconfigに追加すると動きそうです。

[K-shir0]

素早い原因の特定ありがとうございます。おっしゃるとおりで適当なURL追加したら動きました

[K-shir0]

エラーとか流れてこないのでまずそう

該当箇所

ictsc-rikka/pkg/service/answer.go

Lines 80 to 98 in 60ce07d

	{
	param := struct {
	Text string `json:"text"`
	Channel string `json:"channel"`
	}{
	Text: "<https://contest.mgmt.ictsc.net/#/problems/"+ req.ProblemID.String() + "|新着解答> 問題名:" + problem.Title + " チーム名:" + req.UserGroup.Name + "",
	Channel: "#prob-" + strings.ToLower(problem.Code),
	}
	json_str, err := json.Marshal(param)
	if err != nil { fmt.Println(err.Error()) }
	fmt.Println(string(json_str))
	resp, err := http.Post(s.webhook,"application/json",bytes.NewBuffer(json_str))
	if err != nil { fmt.Println(err.Error()) }
	body, err := io.ReadAll(resp.Body)
	if err != nil { fmt.Println(err.Error()) }
	fmt.Println(string(body))
	resp.Body.Close()
	}

[x86taka]

今コメント気がついた..!
エラーが流れてこない..?

Slackのwebhookが失敗したときに回答ができないのはまずいよね