94 lines
2.6 KiB
Go
94 lines
2.6 KiB
Go
package agentapi
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import (
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"encoding/json"
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"net/http"
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"strconv"
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"strings"
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dispatcher "git.g3e.fr/syonad/two/internal/dispatcher/agent"
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"git.g3e.fr/syonad/two/pkg/db/kv"
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)
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func (s *Server) VmByNameHandler(w http.ResponseWriter, r *http.Request) {
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name := strings.TrimPrefix(r.URL.Path, "/vms/")
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if name == "" {
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w.Header().Set("Content-Type", "application/json")
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w.WriteHeader(http.StatusNotFound)
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json.NewEncoder(w).Encode(ErrorResponse{Error: "resource not found"})
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return
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}
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w.Header().Set("Content-Type", "application/json")
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switch r.Method {
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case http.MethodGet:
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s.getVM(w, r, name)
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case http.MethodDelete:
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s.stopVM(w, r, name)
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default:
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w.WriteHeader(http.StatusMethodNotAllowed)
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json.NewEncoder(w).Encode(ErrorResponse{Error: "method not allowed"})
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}
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}
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func (s *Server) getVM(w http.ResponseWriter, _ *http.Request, name string) {
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entries, err := kv.ListByPrefix(s.db, "vm/"+name+"/")
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if err != nil || len(entries) == 0 {
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w.WriteHeader(http.StatusNotFound)
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json.NewEncoder(w).Encode(ErrorResponse{Error: "vm not found"})
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return
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}
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vm, err := vmFromDB(name, entries)
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if err != nil {
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w.WriteHeader(http.StatusInternalServerError)
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json.NewEncoder(w).Encode(ErrorResponse{Error: "failed to read vm"})
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return
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}
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w.WriteHeader(http.StatusOK)
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json.NewEncoder(w).Encode(vm)
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}
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func (s *Server) stopVM(w http.ResponseWriter, _ *http.Request, name string) {
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cmd := dispatcher.StopVMCommand{Name: name}
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if err := s.dispatcher.Prepare(cmd); err != nil {
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if _, dbErr := kv.GetFromDB(s.db, "vm/"+name+"/state"); dbErr != nil {
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w.WriteHeader(http.StatusNotFound)
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} else {
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w.WriteHeader(http.StatusConflict)
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}
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json.NewEncoder(w).Encode(ErrorResponse{Error: err.Error()})
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return
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}
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s.dispatcher.Dispatch(cmd)
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entries, _ := kv.ListByPrefix(s.db, "vm/"+name+"/")
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vm, err := vmFromDB(name, entries)
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if err != nil {
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w.WriteHeader(http.StatusInternalServerError)
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json.NewEncoder(w).Encode(ErrorResponse{Error: "failed to read vm state"})
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return
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}
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w.WriteHeader(http.StatusAccepted)
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json.NewEncoder(w).Encode(vm)
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}
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func vmFromDB(name string, entries map[string]string) (VM, error) {
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prefix := "vm/" + name + "/"
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vm := VM{Name: name}
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vm.State = entries[prefix+"state"]
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vm.MetadataPort = entries[prefix+"metadata_port"]
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vm.Memory, _ = strconv.Atoi(entries[prefix+"memory"])
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vm.CPUs, _ = strconv.Atoi(entries[prefix+"cpus"])
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subnet := entries[prefix+"subnet"]
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ip := entries[prefix+"ip"]
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if subnet != "" || ip != "" {
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vm.Interfaces = []VMInterface{{Subnet: subnet, IP: ip, Primary: true}}
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}
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if path := entries[prefix+"volume_path"]; path != "" {
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vm.Storage = []VMStorage{{Path: path}}
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}
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return vm, nil
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}
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