// checkEnvironUUID checks if the expected envionUUID matches the
// current environUUID set on this Server. It returns nil for a match
// and an error on mismatch.
func (srv *Server) checkEnvironUUID(expected string) error {
actual := srv.getEnvironUUID()
if actual != expected {
return common.UnknownEnvironmentError(expected)
}
return nil
}
func (h *httpHandler) validateEnvironUUID(r *http.Request) error {
// Note: this is only true until we have support for multiple
// environments. For now, there is only one, so we make sure that is
// the one being addressed.
envUUID := h.getEnvironUUID(r)
logger.Tracef("got a request for env %q", envUUID)
if envUUID == "" {
return nil
}
env, err := h.state.Environment()
if err != nil {
logger.Infof("error looking up environment: %v", err)
return err
}
if env.UUID() != envUUID {
logger.Infof("environment uuid mismatch: %v != %v",
envUUID, env.UUID())
return common.UnknownEnvironmentError(envUUID)
}
return nil
}
func (srv *Server) validateEnvironUUID(envUUID string) error {
if envUUID == "" {
// We allow the environUUID to be empty for 2 cases
// 1) Compatibility with older clients
// 2) On first connect. The environment UUID is currently
// generated by 'jujud bootstrap-state', and we haven't
// threaded that information all the way back to the 'juju
// bootstrap' process to be able to cache the value until
// after we've connected one time.
return nil
}
if srv.environUUID == "" {
env, err := srv.state.Environment()
if err != nil {
return err
}
srv.environUUID = env.UUID()
}
if envUUID != srv.environUUID {
return common.UnknownEnvironmentError(envUUID)
}
return nil
}
func (s *errorsSuite) TestUnknownEnvironment(c *gc.C) {
err := common.UnknownEnvironmentError("dead-beef")
c.Check(err, gc.ErrorMatches, `unknown environment: "dead-beef"`)
}
}, {
err: &state.HasAssignedUnitsError{"42", []string{"a"}},
code: params.CodeHasAssignedUnits,
helperFunc: params.IsCodeHasAssignedUnits,
}, {
err: common.ErrTryAgain,
code: params.CodeTryAgain,
helperFunc: params.IsCodeTryAgain,
}, {
err: stderrors.New("an error"),
code: "",
}, {
err: unhashableError{"foo"},
code: "",
}, {
err: common.UnknownEnvironmentError("dead-beef-123456"),
code: params.CodeNotFound,
helperFunc: params.IsCodeNotFound,
}, {
err: nil,
code: "",
}}
type unhashableError []string
func (err unhashableError) Error() string {
return err[0]
}
func (s *errorsSuite) TestErrorTransform(c *gc.C) {
for _, t := range errorTransformTests {
