Query > Asset's URL does not work

[heapwalker]

We upload an image file to server using JS SDK, to our own table news_stress_image, which has a column photo referencing the table _asset. Then we queried the table news_stress_image and wanted to get the (publicly accessible) image url.

The raw json result from the SDK's web service is captured:

{
    "result": [
        {
            "_access": [
                {
                    "level": "read",
                    "public": true
                }
            ],
            "_created_at": "2016-08-09T07:57:35.219725Z",
            "_created_by": "22de813c-b277-4e72-99a6-c514a8bc8e6a",
            "_id": "news_stress_image/71fb8c6a-31c2-4f1b-bab8-0d98c511a4b7",
            "_ownerID": "22de813c-b277-4e72-99a6-c514a8bc8e6a",
            "_type": "record",
            "_updated_at": "2016-08-09T07:57:35.219725Z",
            "_updated_by": "22de813c-b277-4e72-99a6-c514a8bc8e6a",
            "news_stress_id": {
                "$id": "news_stress/fdbb4b77-0030-446c-979c-4d51fec65dfd",
                "$type": "ref"
            },
            "photo": {
                "$name": "180180b3-eb17-4a0c-8309-97da9444e677-news-stress-image",
                "$type": "asset",
                "$url": "https://s3-ap-northeast-1.amazonaws.com/cloudpillar-sky-test/180180b3-eb17-4a0c-8309-97da9444e677-news-stress-image"
            }
        },
        ...
    ]
}

The returned url at record.photo.url -- https://s3-ap-northeast-1.amazonaws.com/cloudpillar-sky-test/180180b3-eb17-4a0c-8309-97da9444e677-news-stress-image -- does not works. An error xml string stating "Access Denied" is returned.

From docs https://docs.skygear.io/js/guide/asset, we saw in the comment:

  // if configured properly, the url should look like the following
  // <ASSET_STORE_URL_PREFIX>/<asset-id>-<your-asset-name>

Then logging into Skygear Developer Portal and we saw that the environment variable ASSET_STORE_URL_PREFIX is having value https://skygearprototype.staging.skygeario.com/files. Thus the url https://skygearprototype.staging.skygeario.com/files/180180b3-eb17-4a0c-8309-97da9444e677-news-stress-image works actually but wasn't returned from SDK.

Would please advise whether there are some mistakes in our environment variables?

[rickmak]

If all your asset is public, you should specific the ASSET_STORE_PUBLIC to YES. Refs: https://docs.skygear.io/server/guide#configure

If you want skygear generate a signed URL for per asset, set ASSET_STORE_PUBLIC to NO

[heapwalker]

Confirmed that we had already set ASSET_STORE_PUBLIC to YES.

[rickmak]

@cpryanpang I see the asset is uploaded to s3 correctly. Would you please help to check following so i get more hints on whats going wrong.

1. is Static Website Hosting enabled on s3?
2. Is the ASSET_STORE_ACCESS_KEY provided in developer portal have right to modify the resource permission(s3:PutBucketAcl, s3:PutObjectAcl and s3:PutObjectVersionAcl) refs: http://docs.aws.amazon.com/AmazonS3/latest/dev/acl-overview.html#SpecifyingGrantee

[heapwalker]

@rickmak Thanks your hint. We configured the s3 setting and we can access the image now. So this issue was not caused by skygear SDK. Thx a lot