Replace rest api with grpc api
Signed-off-by: Michael Crosby <crosbymichael@gmail.com>
This commit is contained in:
Michael Crosby
parent
11c27935d0
commit
1d3349128e
4 changed files with 6 additions and 572 deletions
101
api/v1/client.go
101
api/v1/client.go
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@ -1,101 +0,0 @@
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package v1
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import (
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"bytes"
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"encoding/json"
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"fmt"
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"net/http"
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"strconv"
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)
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func NewClient(addr string) *Client {
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return &Client{
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addr: addr,
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}
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}
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type Client struct {
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addr string
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}
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type StartOpts struct {
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Path string
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Checkpoint string
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}
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// Start starts a container with the specified id and path to the container's
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// bundle on the system.
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func (c *Client) Start(id string, opts StartOpts) error {
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container := Container{
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BundlePath: opts.Path,
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Checkpoint: opts.Checkpoint,
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}
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buf := bytes.NewBuffer(nil)
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if err := json.NewEncoder(buf).Encode(container); err != nil {
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return err
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}
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r, err := http.Post(c.addr+"/containers/"+id, "application/json", buf)
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if err != nil {
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return err
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}
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r.Body.Close()
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if r.StatusCode != http.StatusCreated {
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return fmt.Errorf("unexpected status %d", r.StatusCode)
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}
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return nil
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}
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func (c *Client) State() ([]Container, error) {
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r, err := http.Get(c.addr + "/state")
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if err != nil {
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return nil, err
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}
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var s State
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if err := json.NewDecoder(r.Body).Decode(&s); err != nil {
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return nil, err
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}
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r.Body.Close()
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return s.Containers, nil
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}
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func (c *Client) SignalProcess(id string, pid, signal int) error {
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sig := Signal{
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Signal: signal,
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}
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buf := bytes.NewBuffer(nil)
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if err := json.NewEncoder(buf).Encode(sig); err != nil {
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return err
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}
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r, err := http.Post(c.addr+"/containers/"+id+"/process/"+strconv.Itoa(pid), "application/json", buf)
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if err != nil {
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return err
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}
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r.Body.Close()
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return nil
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}
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func (c *Client) Checkpoints(id string) ([]Checkpoint, error) {
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r, err := http.Get(c.addr + "/containers/" + id + "/checkpoint")
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if err != nil {
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return nil, err
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}
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defer r.Body.Close()
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var checkpoints []Checkpoint
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if err := json.NewDecoder(r.Body).Decode(&checkpoints); err != nil {
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return nil, err
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}
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return checkpoints, nil
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}
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func (c *Client) CreateCheckpoint(id, name string, cp Checkpoint) error {
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buf := bytes.NewBuffer(nil)
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if err := json.NewEncoder(buf).Encode(cp); err != nil {
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return err
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}
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r, err := http.Post(c.addr+"/containers/"+id+"/checkpoint", "application/json", buf)
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if err != nil {
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return err
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}
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r.Body.Close()
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return nil
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}
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387
api/v1/server.go
387
api/v1/server.go
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@ -1,387 +0,0 @@
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package v1
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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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"syscall"
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"github.com/Sirupsen/logrus"
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"github.com/docker/containerd"
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"github.com/docker/containerd/runtime"
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"github.com/gorilla/mux"
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"github.com/opencontainers/specs"
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)
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func NewServer(supervisor *containerd.Supervisor) http.Handler {
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r := mux.NewRouter()
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s := &server{
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supervisor: supervisor,
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r: r,
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}
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// process handlers
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r.HandleFunc("/containers/{id:.*}/process/{pid:.*}", s.signalPid).Methods("POST")
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r.HandleFunc("/containers/{id:.*}/process", s.addProcess).Methods("PUT")
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// checkpoint and restore handlers
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// TODO: PUT handler for adding a checkpoint to containerd??
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r.HandleFunc("/containers/{id:.*}/checkpoint/{name:.*}", s.createCheckpoint).Methods("POST")
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r.HandleFunc("/containers/{id:.*}/checkpoint/{name:.*}", s.deleteCheckpoint).Methods("DELETE")
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r.HandleFunc("/containers/{id:.*}/checkpoint", s.listCheckpoints).Methods("GET")
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// container handlers
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r.HandleFunc("/containers/{id:.*}", s.createContainer).Methods("POST")
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r.HandleFunc("/containers/{id:.*}", s.updateContainer).Methods("PATCH")
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// internal method for replaying the journal
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// r.HandleFunc("/event", s.event).Methods("POST")
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r.HandleFunc("/events", s.events).Methods("GET")
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// containerd handlers
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r.HandleFunc("/state", s.state).Methods("GET")
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return s
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}
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type server struct {
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r *mux.Router
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supervisor *containerd.Supervisor
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}
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func (s *server) ServeHTTP(w http.ResponseWriter, r *http.Request) {
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s.r.ServeHTTP(w, r)
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}
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func (s *server) updateContainer(w http.ResponseWriter, r *http.Request) {
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id := mux.Vars(r)["id"]
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var state ContainerState
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if err := json.NewDecoder(r.Body).Decode(&state); err != nil {
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http.Error(w, err.Error(), http.StatusBadRequest)
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return
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}
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e := containerd.NewEvent(containerd.UpdateContainerEventType)
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e.ID = id
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if state.Signal != 0 {
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e.Signal = syscall.Signal(state.Signal)
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}
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e.State = &runtime.State{
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Status: runtime.Status(string(state.Status)),
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}
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s.supervisor.SendEvent(e)
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if err := <-e.Err; err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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}
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func (s *server) events(w http.ResponseWriter, r *http.Request) {
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events := s.supervisor.Events()
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enc := json.NewEncoder(w)
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for evt := range events {
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var v interface{}
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switch evt.Type {
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case containerd.ExitEventType:
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v = createExitEvent(evt)
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}
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if err := enc.Encode(v); err != nil {
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// TODO: handled closed conn
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logrus.WithField("error", err).Error("encode event")
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}
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}
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}
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func createExitEvent(e *containerd.Event) *Event {
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return &Event{
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Type: "exit",
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ID: e.ID,
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Status: e.Status,
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}
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}
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func (s *server) event(w http.ResponseWriter, r *http.Request) {
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var e containerd.Event
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if err := json.NewDecoder(r.Body).Decode(&e); err != nil {
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http.Error(w, err.Error(), http.StatusBadRequest)
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return
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}
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e.Err = make(chan error, 1)
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s.supervisor.SendEvent(&e)
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if err := <-e.Err; err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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if e.Containers != nil && len(e.Containers) > 0 {
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if err := s.writeState(w, &e); err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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}
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}
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func (s *server) addProcess(w http.ResponseWriter, r *http.Request) {
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id := mux.Vars(r)["id"]
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var process specs.Process
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if err := json.NewDecoder(r.Body).Decode(&process); err != nil {
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http.Error(w, err.Error(), http.StatusBadRequest)
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return
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}
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e := containerd.NewEvent(containerd.AddProcessEventType)
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e.ID = id
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e.Process = &process
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s.supervisor.SendEvent(e)
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if err := <-e.Err; err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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p := Process{
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Pid: e.Pid,
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Terminal: process.Terminal,
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Args: process.Args,
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Env: process.Env,
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Cwd: process.Cwd,
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}
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p.User.UID = process.User.UID
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p.User.GID = process.User.GID
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p.User.AdditionalGids = process.User.AdditionalGids
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if err := json.NewEncoder(w).Encode(p); err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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}
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func (s *server) signalPid(w http.ResponseWriter, r *http.Request) {
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var (
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vars = mux.Vars(r)
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id = vars["id"]
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spid = vars["pid"]
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)
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pid, err := strconv.Atoi(spid)
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if err != nil {
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http.Error(w, err.Error(), http.StatusBadRequest)
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return
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}
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var signal Signal
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if err := json.NewDecoder(r.Body).Decode(&signal); err != nil {
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http.Error(w, err.Error(), http.StatusBadRequest)
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return
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}
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e := containerd.NewEvent(containerd.SignalEventType)
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e.ID = id
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e.Pid = pid
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e.Signal = syscall.Signal(signal.Signal)
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s.supervisor.SendEvent(e)
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if err := <-e.Err; err != nil {
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status := http.StatusInternalServerError
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if err == containerd.ErrContainerNotFound {
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status = http.StatusNotFound
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}
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http.Error(w, err.Error(), status)
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return
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}
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}
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func (s *server) state(w http.ResponseWriter, r *http.Request) {
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e := containerd.NewEvent(containerd.GetContainerEventType)
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s.supervisor.SendEvent(e)
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if err := <-e.Err; err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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if err := s.writeState(w, e); err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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}
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func (s *server) writeState(w http.ResponseWriter, e *containerd.Event) error {
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m := s.supervisor.Machine()
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state := State{
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Containers: []Container{},
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Machine: Machine{
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ID: m.ID,
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Cpus: m.Cpus,
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Memory: m.Memory,
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},
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}
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for _, c := range e.Containers {
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processes, err := c.Processes()
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if err != nil {
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logrus.WithFields(logrus.Fields{
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"error": err,
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"container": c.ID(),
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}).Error("get processes for container")
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}
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var pids []Process
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for _, p := range processes {
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if proc := createProcess(p); proc != nil {
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pids = append(pids, *proc)
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}
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}
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state.Containers = append(state.Containers, Container{
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ID: c.ID(),
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BundlePath: c.Path(),
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Processes: pids,
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State: &ContainerState{
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Status: Status(c.State().Status),
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},
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})
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}
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return json.NewEncoder(w).Encode(&state)
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}
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func createProcess(in runtime.Process) *Process {
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pid, err := in.Pid()
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if err != nil {
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logrus.WithField("error", err).Error("get process pid")
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return nil
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}
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process := in.Spec()
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p := &Process{
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Pid: pid,
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Terminal: process.Terminal,
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Args: process.Args,
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Env: process.Env,
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Cwd: process.Cwd,
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}
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p.User.UID = process.User.UID
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p.User.GID = process.User.GID
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p.User.AdditionalGids = process.User.AdditionalGids
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return p
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}
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func (s *server) createContainer(w http.ResponseWriter, r *http.Request) {
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id := mux.Vars(r)["id"]
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var c Container
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if err := json.NewDecoder(r.Body).Decode(&c); err != nil {
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http.Error(w, err.Error(), http.StatusBadRequest)
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return
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}
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if c.BundlePath == "" {
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http.Error(w, "empty bundle path", http.StatusBadRequest)
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return
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}
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e := containerd.NewEvent(containerd.StartContainerEventType)
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e.ID = id
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e.BundlePath = c.BundlePath
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if c.Checkpoint != "" {
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e.Checkpoint = &runtime.Checkpoint{
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Name: c.Checkpoint,
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}
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}
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e.Stdio = &runtime.Stdio{
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Stderr: c.Stderr,
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Stdout: c.Stdout,
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}
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s.supervisor.SendEvent(e)
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if err := <-e.Err; err != nil {
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code := http.StatusInternalServerError
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if err == containerd.ErrBundleNotFound {
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code = http.StatusNotFound
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}
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http.Error(w, err.Error(), code)
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return
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}
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w.WriteHeader(http.StatusCreated)
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}
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func (s *server) listCheckpoints(w http.ResponseWriter, r *http.Request) {
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id := mux.Vars(r)["id"]
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e := containerd.NewEvent(containerd.GetContainerEventType)
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s.supervisor.SendEvent(e)
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if err := <-e.Err; err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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var container runtime.Container
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for _, c := range e.Containers {
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if c.ID() == id {
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container = c
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break
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}
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}
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if container == nil {
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http.Error(w, "container not found", http.StatusNotFound)
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return
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}
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checkpoints, err := container.Checkpoints()
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if err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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out := []Checkpoint{}
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for _, c := range checkpoints {
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out = append(out, Checkpoint{
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Name: c.Name,
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Tcp: c.Tcp,
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Shell: c.Shell,
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UnixSockets: c.UnixSockets,
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Timestamp: c.Timestamp,
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})
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}
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if err := json.NewEncoder(w).Encode(out); err != nil {
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logrus.WithField("error", err).Error("encode checkpoints")
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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}
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func (s *server) createCheckpoint(w http.ResponseWriter, r *http.Request) {
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var (
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vars = mux.Vars(r)
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id = vars["id"]
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name = vars["name"]
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)
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var cp Checkpoint
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// most options to the checkpoint action can be left out so don't
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// decode unless the client passed anything in the body.
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if r.ContentLength > 0 {
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if err := json.NewDecoder(r.Body).Decode(&cp); err != nil {
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http.Error(w, err.Error(), http.StatusBadRequest)
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return
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}
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}
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e := containerd.NewEvent(containerd.CreateCheckpointEventType)
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e.ID = id
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e.Checkpoint = &runtime.Checkpoint{
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Name: name,
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Exit: cp.Exit,
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Tcp: cp.Tcp,
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UnixSockets: cp.UnixSockets,
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Shell: cp.Shell,
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}
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s.supervisor.SendEvent(e)
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if err := <-e.Err; err != nil {
|
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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w.WriteHeader(http.StatusCreated)
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}
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func (s *server) deleteCheckpoint(w http.ResponseWriter, r *http.Request) {
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var (
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vars = mux.Vars(r)
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id = vars["id"]
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name = vars["name"]
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)
|
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if name == "" {
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http.Error(w, "checkpoint name cannot be empty", http.StatusBadRequest)
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return
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}
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var cp Checkpoint
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if r.ContentLength > 0 {
|
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if err := json.NewDecoder(r.Body).Decode(&cp); err != nil {
|
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http.Error(w, err.Error(), http.StatusBadRequest)
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return
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}
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}
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e := containerd.NewEvent(containerd.DeleteCheckpointEventType)
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e.ID = id
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e.Checkpoint = &runtime.Checkpoint{
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Name: name,
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}
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s.supervisor.SendEvent(e)
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if err := <-e.Err; err != nil {
|
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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}
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|
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@ -1,70 +0,0 @@
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package v1
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|
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import "time"
|
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|
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type State struct {
|
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Containers []Container `json:"containers"`
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Machine Machine `json:"machine"`
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}
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|
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type Status string
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|
||||
const (
|
||||
Paused Status = "paused"
|
||||
Running Status = "running"
|
||||
)
|
||||
|
||||
type Machine struct {
|
||||
ID string `json:"id"`
|
||||
Cpus int `json:"cpus"`
|
||||
Memory int64 `json:"memory"`
|
||||
}
|
||||
|
||||
type ContainerState struct {
|
||||
Status Status `json:"status,omitempty"`
|
||||
Signal int `json:"signal,omitempty"`
|
||||
}
|
||||
|
||||
type Container struct {
|
||||
ID string `json:"id,omitempty"`
|
||||
BundlePath string `json:"bundlePath,omitempty"`
|
||||
Processes []Process `json:"processes,omitempty"`
|
||||
Stdout string `json:"stdout,omitempty"`
|
||||
Stderr string `json:"stderr,omitempty"`
|
||||
State *ContainerState `json:"state,omitempty"`
|
||||
Checkpoint string `json:"checkpoint,omitempty"`
|
||||
}
|
||||
|
||||
type User struct {
|
||||
UID uint32 `json:"uid"`
|
||||
GID uint32 `json:"gid"`
|
||||
AdditionalGids []uint32 `json:"additionalGids,omitempty"`
|
||||
}
|
||||
|
||||
type Process struct {
|
||||
Terminal bool `json:"terminal"`
|
||||
User User `json:"user"`
|
||||
Args []string `json:"args,omitempty"`
|
||||
Env []string `json:"env,omitempty"`
|
||||
Cwd string `json:"cwd,omitempty"`
|
||||
Pid int `json:"pid,omitempty"`
|
||||
}
|
||||
|
||||
type Signal struct {
|
||||
Signal int `json:"signal"`
|
||||
}
|
||||
|
||||
type Event struct {
|
||||
Type string `json:"type"`
|
||||
ID string `json:"id,omitempty"`
|
||||
Status int `json:"status,omitempty"`
|
||||
}
|
||||
|
||||
type Checkpoint struct {
|
||||
Name string `json:"name,omitempty"`
|
||||
Timestamp time.Time `json:"timestamp,omitempty"`
|
||||
Exit bool `json:"exit,omitempty"`
|
||||
Tcp bool `json:"tcp"`
|
||||
UnixSockets bool `json:"unixSockets"`
|
||||
Shell bool `json:"shell"`
|
||||
}
|
||||
|
|
@ -3,21 +3,18 @@ package main
|
|||
import (
|
||||
"log"
|
||||
"net"
|
||||
"net/http"
|
||||
"os"
|
||||
"runtime"
|
||||
"sync"
|
||||
"time"
|
||||
|
||||
"google.golang.org/grpc"
|
||||
"google.golang.org/grpc/grpclog"
|
||||
|
||||
"github.com/Sirupsen/logrus"
|
||||
"github.com/codegangsta/cli"
|
||||
"github.com/docker/containerd"
|
||||
"github.com/docker/containerd/api/grpc/server"
|
||||
"github.com/docker/containerd/api/grpc/types"
|
||||
"github.com/docker/containerd/api/v1"
|
||||
"github.com/docker/containerd/util"
|
||||
"github.com/rcrowley/go-metrics"
|
||||
)
|
||||
|
|
@ -150,18 +147,13 @@ func daemon(id, stateDir string, concurrency, bufferSize int) error {
|
|||
if err := supervisor.Start(); err != nil {
|
||||
return err
|
||||
}
|
||||
if os.Getenv("GRPC") != "" {
|
||||
lis, err := net.Listen("tcp", ":8888")
|
||||
l, err := net.Listen("tcp", ":8888")
|
||||
if err != nil {
|
||||
grpclog.Fatalf("failed to listen: %v", err)
|
||||
return err
|
||||
}
|
||||
grpcServer := grpc.NewServer()
|
||||
types.RegisterAPIServer(grpcServer, server.NewServer(supervisor))
|
||||
return grpcServer.Serve(lis)
|
||||
|
||||
}
|
||||
server := v1.NewServer(supervisor)
|
||||
return http.ListenAndServe("localhost:8888", server)
|
||||
s := grpc.NewServer()
|
||||
types.RegisterAPIServer(s, server.NewServer(supervisor))
|
||||
return s.Serve(l)
|
||||
}
|
||||
|
||||
// getDefaultID returns the hostname for the instance host
|
||||
|
|
|
|||
Loading…
Reference in a new issue