Reduce requests needed for delete()

[mzur]

This change adds a new getObjectInstance method which creates the Swift object but does not call retrieve(). It can be used for delete() where retrieve() is not required. This saves a HEAD request.

Background:
I observed calls to delete() which threw exceptions because the object to delete does not exist (any more). What I expected in this case was a returned false and no exception. The exception originated from getObject() which fails at the retrieve() call when the object does not exist. My first impulse was to move getObject() inside the try catch block but then I noticed that the retrieve() is not required for delete() in the first place.

[mzur]

Ping @chrisnharvey.

[mzur]

Hey @chrisnharvey, sorry for nagging again. If you don't have the time to look after this repository at the moment, feel free to add me as collaborator. I'd be happy to help out with reviewing PRs or issues.

[chrisnharvey]

Hi @mzur, so sorry for the delay in responding. This PR got completely lost in my inbox.

I will take a look this evening and merge for you.

I am going to be moving this repository to a new namespace, so I've been thinking about how I'm going to do that without causing too many issues. I'll be happy to add you as a collaborator when I've moved the repo.

[chrisnharvey]

@mzur This works great! Thank you.

[mzur]

Thanks! Will you publish a new release as well?

[mzur]

Hey there, any progress with moving this repo to a new namespace or publishing the new release? I'd love to push this version to production to get rid of all the error messages.

[mzur]

@chrisnharvey If you no longer have time to take care of this repo or move it to a new namespace, I'd be happy to maintain a fork from now on, too. Just say the word 😉

[mzur]

I now created the fork mzur/flysystem-openstack-swift with the 0.2.2 release. Anybody who is interested in the most recent version of the package, feel free to use the fork instead.