object_url can't support put object about aliyun_oss

[ug0]

I'll try to get this done by today or tomorrow.

[ug0]

Oh, I didn't think of the that when I wrote the object_url fucntion. Actually I just wanted a convenient way to expose the object URL for downloading.

I think we can add a new function signed_url(or if you have a better name) to support all the features described in the official doc.

def signed_url(bucket, object, expires, method \\ "GET", headers \\ ${}, sub_resources \\ %{}) do
end

What do you think?

[vip30]

LGTM

Will you commit this changes?

Thanks

[ug0]

This has been implemented and merged to master. While I was coding, I realized maybe I shouldn't limit signed_url to only objects. But I don't want to just define another Bucket.signed_url function because I think that's a bit redundant and there should be a better way.
Eventually I decide to just release a new version with Object.signed_url for now.

However, if you look at the implementation of Object.signed_url, you can easilly build any signed URL for other APIs by using Request.signed_query_url. For example:

  # Signed URL for GetBucket
   %{
      verb: "GET",
      host: "#{bucket}.#{endpoint()}",
      path: "/",
      resource: "/#{bucket}/",
      sub_resources: %{},
      headers: %{"Content-Type" => ""},
      expires: expires
    }
    |> Request.build()
    |> Request.signed_query_url()

  # Signed URL for PutBucketAcl
   %{
      verb: "PUT",
      host: "#{bucket}.#{endpoint()}",
      path: "/",
      resource: "/#{bucket}/",
      sub_resources: %{"acl" => nil},
      headers: %{"Content-Type" => "text/plain;charset=UTF-8", "x-oss-acl" => "private"},
      expires: expires
    }
    |> Request.build()
    |> Request.signed_query_url()

  # Signed URL for GetBucket
   %{
      verb: "GET",
      host: endpoint(),
      path: "/",
      resource: "/",
      sub_resources: %{"Content-Type" => ""},
      headers: %{},
      expires: expires
    }
    |> Request.build()
    |> Request.signed_query_url()

[ug0]

v0.5.0 has been released.