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Remove PublicIP from QEMU metadata (#396)

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Signed-off-by: Daniel Weiße <dw@edgeless.systems>
This commit is contained in:
Daniel Weiße 2022-11-02 12:56:16 +01:00 • committed by GitHub
parent 6d2ec109d0
commit 55cfff034a
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15 changed files with 63 additions and 711 deletions
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43
hack/qemu-metadata-api/server/server.go
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@ -41,6 +41,7 @@ func (s *Server) ListenAndServe(port string) error {
mux.Handle("/peers", http.HandlerFunc(s.listPeers))
mux.Handle("/log", http.HandlerFunc(s.postLog))
mux.Handle("/pcrs", http.HandlerFunc(s.exportPCRs))
mux.Handle("/endpoint", http.HandlerFunc(s.getEndpoint))
server := http.Server{
Handler: mux,
@ -75,7 +76,7 @@ func (s *Server) listSelf(w http.ResponseWriter, r *http.Request) {
}
for _, peer := range peers {
if peer.PublicIP == remoteIP {
if peer.VPCIP == remoteIP {
w.Header().Set("Content-Type", "application/json")
if err := json.NewEncoder(w).Encode(peer); err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
@ -110,6 +111,43 @@ func (s *Server) listPeers(w http.ResponseWriter, r *http.Request) {
log.Infof("Request successful")
}
// getEndpoint returns the IP address of the first control-plane instance.
// This allows us to fake a load balancer for QEMU instances.
func (s *Server) getEndpoint(w http.ResponseWriter, r *http.Request) {
log := s.log.With(zap.String("peer", r.RemoteAddr))
log.Infof("Serving GET request for /endpoint")
net, err := s.virt.LookupNetworkByName(s.network)
if err != nil {
log.With(zap.Error(err)).Errorf("Failed to lookup network")
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
defer net.Free()
leases, err := net.GetDHCPLeases()
if err != nil {
log.With(zap.Error(err)).Errorf("Failed to get DHCP leases")
http.Error(w, err.Error(), http.StatusInternalServerError)
}
for _, lease := range leases {
if strings.HasPrefix(lease.Hostname, "control-plane") &&
strings.HasSuffix(lease.Hostname, "0") {
w.Header().Set("Content-Type", "application/json")
if err := json.NewEncoder(w).Encode(lease.IPaddr); err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
log.Infof("Request successful")
return
}
}
log.Errorf("Failed to find control-plane peer in active leases")
http.Error(w, "No matching peer found", http.StatusNotFound)
}
// postLog writes implements cloud-logging for QEMU instances.
func (s *Server) postLog(w http.ResponseWriter, r *http.Request) {
log := s.log.With(zap.String("peer", r.RemoteAddr))
@ -178,7 +216,7 @@ func (s *Server) exportPCRs(w http.ResponseWriter, r *http.Request) {
return
}
for _, peer := range peers {
if peer.PublicIP == remoteIP {
if peer.VPCIP == remoteIP {
nodeName = peer.Name
}
}
@ -210,7 +248,6 @@ func (s *Server) listAll() ([]metadata.InstanceMetadata, error) {
Name: lease.Hostname,
Role: instanceRole,
VPCIP: lease.IPaddr,
PublicIP: lease.IPaddr,
ProviderID: "qemu:///hostname/" + lease.Hostname,
})
}