func (e *environ) userData(scfg *startInstanceParams) ([]byte, error) {
cfg := &cloudinit.MachineConfig{
StateServer: scfg.stateServer,
StateInfo: scfg.info,
StateServerCert: scfg.stateServerCert,
StateServerKey: scfg.stateServerKey,
InstanceIdAccessor: "$(curl http://169.254.169.254/1.0/meta-data/instance-id)",
ProviderType: "ec2",
DataDir: "/var/lib/juju",
Tools: scfg.tools,
MachineId: scfg.machineId,
AuthorizedKeys: e.ecfg().AuthorizedKeys(),
Config: scfg.config,
}
cloudcfg, err := cloudinit.New(cfg)
if err != nil {
return nil, err
}
data, err := cloudcfg.Render()
if err != nil {
return nil, err
}
cdata := trivial.Gzip(data)
log.Debugf("environs/ec2: ec2 user data; %d bytes: %q", len(cdata), data)
return cdata, nil
}
func (trivialSuite) TestCompression(c *C) {
cdata := trivial.Gzip(data)
c.Assert(len(cdata) < len(data), Equals, true)
data1, err := trivial.Gunzip(cdata)
c.Assert(err, IsNil)
c.Assert(data1, DeepEquals, data)
data1, err = trivial.Gunzip(compressedData)
c.Assert(err, IsNil)
c.Assert(data1, DeepEquals, data)
}