[I] new feature: Generate permanent URL for public read [opendal]

["wlinna (via GitHub)" <gi...@apache.org>]

wlinna opened a new issue, #5581:
URL: https://github.com/apache/opendal/issues/5581

   ### Feature Description
   
   Create a function for `Operator`  (somewhat similar to `presign_read`) which generates a permanent publicly accessible URL to the resource. For example, I'm using Google Cloud Storage emulator and I have configured `Gcs` service like this:
   
   ```
   Gcs::default()
           .bucket("test")
           .root("/")
           .disable_vm_metadata()
           .allow_anonymous()
           .endpoint("http://127.0.0.1:9199")
           .disable_config_load();
   ```
   Now let's say I want to access a file "myfile.txt". I would like to generate a direct public access URL that looks like this:
   
   `http://localhost:9199/v0/b/test/o/myfile.txt?alt=media`
   
   
   ### Problem and Solution
   
   Many object storage services such as Google Cloud Storage and S3 allow public read access to files. `Operator` nicely abstracts all these services, but since it doesn't have the ability to generate permanent and publicly accessible links, I loose this abstraction.
   
   As far as I know, `Operator` does not expose `endpoint` either, so as a workaround I have to circumvent OpenDAL completely to generate a public urls.
   
   ### Additional Context
   
   _No response_
   
   ### Are you willing to contribute to the development of this feature?
   
   - [ ] Yes, I am willing to contribute to the development of this feature.


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Re: [I] new feature: Generate permanent URL for public read [opendal]

["Xuanwo (via GitHub)" <gi...@apache.org>]

Xuanwo commented on issue #5581:
URL: https://github.com/apache/opendal/issues/5581#issuecomment-2721094313

   Maybe we can just return the url directly if `allow_anonymous` has been enabled?


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