Support for temp urls

[carlhoerberg]

http://docs.openstack.org/api/openstack-object-storage/1.0/content/tempurl.html

[carlhoerberg]

doing this now:

expires = Time.now.utc.to_i + (60 * 60) # 1 hour
account = ENV.fetch 'SOFTLAYER_OS_ACCOUNT'
path = "/v1/#{account}/#{container}/#{file}"
hmac_body = ['GET', expires, path].join("\n")
key = ENV.fetch 'SOFTLAYER_OS_TEMP_URL_KEY'
sig = Digest::HMAC.hexdigest(hmac_body, key, Digest::SHA1)
"https://#{region}.objectstorage.softlayer.net#{path}?temp_url_sig=#{sig}&temp_url_expires=#{expires}"

[cphrmky]

@carlhoerberg have you checked out fog-softlayer ?

It has support for temp urls, check the examples for documentation.

[sio4]

I did pull request for it. (#10)