I'm setting up Docker containers.
On the server side, files are uploaded to S3.
It succeeded to upload under my local environment.
However, it fails to upload under Docker environment.
- client: React/axios
- server: Golang/gin
- db: mysql
- source code: https://github.com/jpskgc/article
article
├ client
├ api
└ docker-compose.yml
Here is the docker-compose.yml:
version: '3'
services:
api:
build:
dockerfile: Dockerfile.dev
context: ./api
volumes:
- ./api:/app
ports:
- 2345:2345
depends_on:
- db
tty: true
volumes:
- $HOME/.aws/credentials.properties:/home/api/.aws/credentials.properties
Here is the server side code to access to S3.
api := router.Group("/api")
{
api.POST("/post/image", func(c *gin.Context) {
var creds *credentials.Credentials
var err error
creds = credentials.NewSharedCredentials("", "default")
_, err = creds.Get()
if err != nil {
creds = credentials.NewCredentials(&ec2rolecreds.EC2RoleProvider{})
_, err = creds.Get()
}
cfg := aws.NewConfig().WithRegion("ap-northeast-1").WithCredentials(creds)
svc := s3.New(session.New(), cfg)
form, _ := c.MultipartForm()
files := form.File["images[]"]
var imageNames []ImageName
imageName := ImageName{}
for _, file := range files {
f, err := file.Open()
if err != nil {
log.Println(err)
}
defer f.Close()
size := file.Size
buffer := make([]byte, size)
f.Read(buffer)
fileBytes := bytes.NewReader(buffer)
fileType := http.DetectContentType(buffer)
path := "/media/" + file.Filename
params := &s3.PutObjectInput{
Bucket: aws.String("article-s3-jpskgc"),
Key: aws.String(path),
Body: fileBytes,
ContentLength: aws.Int64(size),
ContentType: aws.String(fileType),
}
resp, err := svc.PutObject(params)
fmt.Printf("response %s", awsutil.StringValue(resp))
imageName.NAME = file.Filename
imageNames = append(imageNames, imageName)
}
c.JSON(http.StatusOK, imageNames)
})
}
I expect images are uploaded in server side to S3.
But in actuality they're not.
Here are some logs:
api_1 | 2019/07/31 14:58:53 [Recovery] 2019/07/31 - 14:58:53 panic recovered:
api_1 | POST /api/post/image HTTP/1.1
api_1 | Host: localhost:2345
api_1 | Accept: application/json, text/plain, */*
api_1 | Accept-Encoding: gzip, deflate, br
api_1 | Accept-Language: en-US,en;q=0.9
api_1 | Connection: keep-alive
api_1 | Content-Length: 92267
api_1 | Content-Type: multipart/form-data; boundary=----WebKitFormBoundaryYx6aOI06AYceIHnU
api_1 | Origin: http://localhost:3000
api_1 | Referer: http://localhost:3000/post/finish
api_1 | User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3770.142 Safari/537.36
api_1 |
api_1 |
api_1 | runtime error: invalid memory address or nil pointer dereference
api_1 | /usr/local/go/src/runtime/panic.go:82 (0x4427f0)
api_1 | panicmem: panic(memoryError)
api_1 | /usr/local/go/src/runtime/signal_unix.go:390 (0x44261f)
api_1 | sigpanic: panicmem()
api_1 | /go/src/github.com/aws/aws-sdk-go/aws/ec2metadata/api.go:26 (0xa01a35)
api_1 | (*EC2Metadata).GetMetadata: req := c.NewRequest(op, nil, output)
api_1 | /go/src/github.com/aws/aws-sdk-go/aws/credentials/ec2rolecreds/ec2_role_provider.go:134 (0xa05607)
api_1 | requestCredList: resp, err := client.GetMetadata(iamSecurityCredsPath)
api_1 | /go/src/github.com/aws/aws-sdk-go/aws/credentials/ec2rolecreds/ec2_role_provider.go:90 (0xa05159)
api_1 | (*EC2RoleProvider).Retrieve: credsList, err := requestCredList(m.Client)
api_1 | /go/src/github.com/aws/aws-sdk-go/aws/credentials/credentials.go:241 (0x945246)
api_1 | (*Credentials).Get: creds, err := c.provider.Retrieve()
api_1 | /app/main.go:172 (0xb1dde1)
api_1 | main.func5: _, err = creds.Get()
api_1 | /go/src/github.com/gin-gonic/gin/context.go:147 (0x8f97c9)
api_1 | (*Context).Next: c.handlers[c.index](c)
api_1 | /go/src/github.com/gin-gonic/gin/recovery.go:83 (0x90d259)
api_1 | RecoveryWithWriter.func1: c.Next()
api_1 | /go/src/github.com/gin-gonic/gin/context.go:147 (0x8f97c9)
api_1 | (*Context).Next: c.handlers[c.index](c)
api_1 | /go/src/github.com/gin-gonic/gin/logger.go:240 (0x90c300)
api_1 | LoggerWithConfig.func1: c.Next()
api_1 | /go/src/github.com/gin-gonic/gin/context.go:147 (0x8f97c9)
api_1 | (*Context).Next: c.handlers[c.index](c)
api_1 | /go/src/github.com/gin-gonic/gin/gin.go:391 (0x9036c9)
api_1 | (*Engine).handleHTTPRequest: c.Next()
api_1 | /go/src/github.com/gin-gonic/gin/gin.go:352 (0x902dbd)
api_1 | (*Engine).ServeHTTP: engine.handleHTTPRequest(c)
api_1 | /usr/local/go/src/net/http/server.go:2774 (0x6dcc77)
api_1 | serverHandler.ServeHTTP: handler.ServeHTTP(rw, req)
api_1 | /usr/local/go/src/net/http/server.go:1878 (0x6d8860)
api_1 | (*conn).serve: serverHandler{c.server}.ServeHTTP(w, w.req)
api_1 | /usr/local/go/src/runtime/asm_amd64.s:1337 (0x45a090)
api_1 | goexit: BYTE $0x90 // NOP
api_1 |
api_1 | [GIN] 2019/07/31 - 14:58:53 | 500 | 695.0698ms | 172.18.0.1 | POST /api/post/image
