Hm..  Its interesting.  digging further, I don't understand how this
caused a problem on nova.  It seems (either by design or happenstance)
that the general behavior of the metadata service handles this issue,
and boto is designed to read the metadata service as it is implemented.

I actually verified functional 'boto.utils.get_instance_metadata' on
both nova and ec2 with a key named "my brickies" (nova folsom as
packaged in Ubuntu).  The output of the commands below was identical.

Example:
$ wget http://169.254.169.254/2009-04-04/meta-data/public-keys -O - -q; echo
0=my brickies
$ wget http://169.254.169.254/2009-04-04/meta-data/public-keys/0/ -O - -q; echo
openssh-key
$ wget http://169.254.169.254/2009-04-04/meta-data/public-keys/0/openssh-key -O 
- -q;
ssh-rsa 
AAAAB3NzaC1yc2EAAAABIwAAAQEA3I7VUf2l5gSn5uavROsc5HRDpZdQueUq5ozemNSj8T7enqKHOEaFoU2VoPgGEWC9RyzSQVeyD6s7APMcE82EtmW4skVEgEGSbDc1pvxzxtchBj78hJP6Cf5TCMFSXw+Fz5rF1dR23QDbN1mkHs7adr8GW4kSWqU7Q7NDwfIrJJtO7Hi42GyXtvEONHbiRPOe8stqUly7MvUoN+5kfjBM8Qqpfl2+FNhTYWpMfYdPUnE7u536WqzFmsaqJctz3gBxH9Ex7dFtrxR4qiqEr9Qtlu3xGn7Bw07/+i1D+ey3ONkZLN+LQ714cgj8fRS4Hj29SCmXp5Kt5/82cD/VN3NtHw==
 my brickies

So, the public-keys (also in nova) is special cased, and you do not ever
refer to the key name when crawling.  So the space shouldn't actually be
used.

I agree the general suggestion, though, that boto should not be doing
requests with unencoded urls.


** Attachment added: "typescript of some other info 'get_instance_metadata'"
   
https://bugs.launchpad.net/cloud-init/+bug/962046/+attachment/3174877/+files/typescript

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https://bugs.launchpad.net/bugs/962046

Title:
  EC2 metadata retrieval fails with spaces in a resource name

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