Directly use bucket instead of Walking through containers

[himilshahvcc]

Hi, I want to use this package to satisfy the requirement of connecting my container with various clouds. I have done the poc for uploading file to s3 bucket but it fails and gives below error.
Our infrastructure does not permit to iterate through the buckets but can access directly a particular bucket by providing - Region, KeyID & Secret.

Throws error from below configuration
err = stow.WalkContainers(location, stow.NoPrefix, 100, func(c stow.Container, err error) error {

Error
Error walking through container : Containers, listing the buckets: AccessDenied: Access Denied
status code: 403,

Kindly suggest if there is any workaround.

[jasonsattler]

The stow.WalkContainers will iterate through all of you buckets which is why it need the "s3:ListAllMyBuckets" permission.

If you know the bucket name you can use location.Container to connect directly to that bucket.
For example:

package main

import (
	"fmt"
	"log"

	"github.com/graymeta/stow"
	"github.com/graymeta/stow/s3"
)

func main() {
	kind := "s3"
	config := stow.ConfigMap{
		s3.ConfigAccessKeyID: "xxxxxxxxxx",
		s3.ConfigSecretKey:   "xxxxxxxxxxxx",
		s3.ConfigRegion:      "us-east-1",
	}
	location, err := stow.Dial(kind, config)
	if err != nil {
		log.Fatal("unable to Dial location")
	}
	defer location.Close()

        // Pull Container info
	container, err := location.Container("example-bucket-useast1")
	if err != nil {
		log.Fatal("Unable to find container")
	}

        // Walk the entire container
	err = stow.Walk(container, stow.NoPrefix, 100, func(item stow.Item, err error) error {
		if err != nil {
			return err
		}

		fmt.Println("Name: ", item.Name())
		return nil
	})
	if err != nil {
		log.Fatal("Unable to walk container")
	}
}

[marbergq]

I think the first problem lies in the fact that the stow s3 tries to make a location lookup and a region lookup, which will fail, since these are made anonymously. Is that expected?

[jasonsattler]

In that case you can create a new stow kind and check all the api calls to make sure they are supported.