Retries

[erkie]

The DigitalOcean API is very flaky and throws 503s pretty liberally. For a lot of operations it's safe to retry instead of stopping the entire process. I suggest retries on the following:

• Creating volumes
• Destroying volumes
• Uploading to Spaces
• Fetching running instance metadata

[erkie]

Implemented pkg.WithRetry in 9f05030 for uploading to spaces, which seems to be the most common problem.

read tcp N.N.N.N:46668->N.N.N.N:443: use of closed network connection

Hopefully this fixes it. Released in 1.0.7

[erkie]

Implemented a simple retry mechanism in fetching running instance data in 2c92398

Get http://169.254.169.254/metadata/v1.json: net/http: request canceled (Client.Timeout exceeded while awaiting headers