337 lines
9.2 KiB
Go
337 lines
9.2 KiB
Go
package docker
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import (
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"encoding/json"
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"fmt"
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"github.com/gorilla/mux"
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"io/ioutil"
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"log"
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"net/http"
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"os"
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"runtime"
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"strconv"
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"strings"
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"time"
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)
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func ListenAndServe(addr string, rtime *Runtime) error {
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r := mux.NewRouter()
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log.Printf("Listening for HTTP on %s\n", addr)
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r.Path("/version").Methods("GET").HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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log.Println(r.RequestURI)
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m := VersionOut{VERSION, GIT_COMMIT, NO_MEMORY_LIMIT}
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b, err := json.Marshal(m)
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if err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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} else {
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w.Write(b)
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}
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})
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r.Path("/containers/{name:.*}/kill").Methods("POST").HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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log.Println(r.RequestURI)
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vars := mux.Vars(r)
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name := vars["name"]
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if container := rtime.Get(name); container != nil {
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if err := container.Kill(); err != nil {
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http.Error(w, "Error restarting container "+name+": "+err.Error(), http.StatusInternalServerError)
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return
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}
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} else {
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http.Error(w, "No such container: "+name, http.StatusInternalServerError)
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return
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}
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w.WriteHeader(200)
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})
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r.Path("/images").Methods("GET").HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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log.Println(r.RequestURI)
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All := r.Form.Get("all")
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NameFilter := r.Form.Get("filter")
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Quiet := r.Form.Get("quiet")
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var allImages map[string]*Image
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var err error
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if All == "true" {
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allImages, err = rtime.graph.Map()
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} else {
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allImages, err = rtime.graph.Heads()
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}
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if err != nil {
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w.WriteHeader(500)
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return
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}
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var outs []ImagesOut
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for name, repository := range rtime.repositories.Repositories {
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if NameFilter != "" && name != NameFilter {
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continue
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}
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for tag, id := range repository {
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var out ImagesOut
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image, err := rtime.graph.Get(id)
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if err != nil {
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log.Printf("Warning: couldn't load %s from %s/%s: %s", id, name, tag, err)
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continue
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}
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delete(allImages, id)
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if Quiet != "true" {
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out.Repository = name
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out.Tag = tag
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out.Id = TruncateId(id)
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out.Created = HumanDuration(time.Now().Sub(image.Created)) + " ago"
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} else {
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out.Id = image.ShortId()
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}
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outs = append(outs, out)
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}
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}
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// Display images which aren't part of a
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if NameFilter == "" {
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for id, image := range allImages {
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var out ImagesOut
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if Quiet != "true" {
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out.Repository = "<none>"
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out.Tag = "<none>"
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out.Id = TruncateId(id)
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out.Created = HumanDuration(time.Now().Sub(image.Created)) + " ago"
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} else {
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out.Id = image.ShortId()
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}
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outs = append(outs, out)
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}
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}
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b, err := json.Marshal(outs)
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if err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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} else {
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w.Write(b)
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}
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})
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r.Path("/info").Methods("GET").HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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log.Println(r.RequestURI)
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images, _ := rtime.graph.All()
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var imgcount int
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if images == nil {
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imgcount = 0
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} else {
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imgcount = len(images)
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}
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var out InfoOut
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out.Containers = len(rtime.List())
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out.Version = VERSION
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out.Images = imgcount
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if os.Getenv("DEBUG") == "1" {
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out.Debug = true
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out.NFd = getTotalUsedFds()
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out.NGoroutines = runtime.NumGoroutine()
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}
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b, err := json.Marshal(out)
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if err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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} else {
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w.Write(b)
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}
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})
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r.Path("/images/{name:.*}/history").Methods("GET").HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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log.Println(r.RequestURI)
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vars := mux.Vars(r)
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name := vars["name"]
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image, err := rtime.repositories.LookupImage(name)
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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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var outs []HistoryOut
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err = image.WalkHistory(func(img *Image) error {
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var out HistoryOut
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out.Id = rtime.repositories.ImageName(img.ShortId())
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out.Created = HumanDuration(time.Now().Sub(img.Created)) + " ago"
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out.CreatedBy = strings.Join(img.ContainerConfig.Cmd, " ")
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return nil
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})
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b, err := json.Marshal(outs)
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if err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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} else {
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w.Write(b)
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}
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})
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r.Path("/containers/{name:.*}/logs").Methods("GET").HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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log.Println(r.RequestURI)
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vars := mux.Vars(r)
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name := vars["name"]
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if container := rtime.Get(name); container != nil {
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var out LogsOut
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logStdout, err := container.ReadLog("stdout")
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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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logStderr, err := container.ReadLog("stderr")
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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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stdout, errStdout := ioutil.ReadAll(logStdout)
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if errStdout != nil {
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http.Error(w, errStdout.Error(), http.StatusInternalServerError)
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return
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} else {
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out.Stdout = fmt.Sprintf("%s", stdout)
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}
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stderr, errStderr := ioutil.ReadAll(logStderr)
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if errStderr != nil {
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http.Error(w, errStderr.Error(), http.StatusInternalServerError)
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return
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} else {
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out.Stderr = fmt.Sprintf("%s", stderr)
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}
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b, err := json.Marshal(out)
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if err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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} else {
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w.Write(b)
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}
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} else {
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http.Error(w, "No such container: "+name, http.StatusInternalServerError)
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}
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})
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r.Path("/containers").Methods("GET").HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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log.Println(r.RequestURI)
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All := r.Form.Get("all")
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NoTrunc := r.Form.Get("notrunc")
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Quiet := r.Form.Get("quiet")
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Last := r.Form.Get("n")
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n, err := strconv.Atoi(Last)
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if err != nil {
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n = -1
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}
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var outs []PsOut
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for i, container := range rtime.List() {
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if !container.State.Running && All != "true" && n == -1 {
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continue
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}
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if i == n {
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break
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}
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var out PsOut
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out.Id = container.ShortId()
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if Quiet != "true" {
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command := fmt.Sprintf("%s %s", container.Path, strings.Join(container.Args, " "))
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if NoTrunc != "true" {
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command = Trunc(command, 20)
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}
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out.Image = rtime.repositories.ImageName(container.Image)
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out.Command = command
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out.Created = HumanDuration(time.Now().Sub(container.Created)) + " ago"
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out.Status = container.State.String()
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}
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outs = append(outs, out)
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}
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b, err := json.Marshal(outs)
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if err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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} else {
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w.Write(b)
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}
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})
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r.Path("/containers/{name:.*}/restart").Methods("POST").HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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log.Println(r.RequestURI)
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vars := mux.Vars(r)
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name := vars["name"]
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if container := rtime.Get(name); container != nil {
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if err := container.Restart(); err != nil {
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http.Error(w, "Error restarting container "+name+": "+err.Error(), http.StatusInternalServerError)
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return
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}
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} else {
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http.Error(w, "No such container: "+name, http.StatusInternalServerError)
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return
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}
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w.WriteHeader(200)
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})
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r.Path("/containers/{name:.*}").Methods("DELETE").HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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log.Println(r.RequestURI)
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vars := mux.Vars(r)
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name := vars["name"]
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if container := rtime.Get(name); container != nil {
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if err := rtime.Destroy(container); err != nil {
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http.Error(w, "Error destroying container "+name+": "+err.Error(), http.StatusInternalServerError)
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return
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}
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} else {
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http.Error(w, "No such container: "+name, http.StatusInternalServerError)
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return
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}
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w.WriteHeader(200)
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})
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r.Path("/images/{name:.*}").Methods("DELETE").HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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log.Println(r.RequestURI)
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vars := mux.Vars(r)
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name := vars["name"]
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img, err := rtime.repositories.LookupImage(name)
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if err != nil {
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http.Error(w, "No such image: "+name, http.StatusInternalServerError)
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return
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} else {
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if err := rtime.graph.Delete(img.Id); err != nil {
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http.Error(w, "Error deleting image "+name+": "+err.Error(), http.StatusInternalServerError)
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return
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}
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}
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w.WriteHeader(200)
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})
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r.Path("/containers/{name:.*}/start").Methods("POST").HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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log.Println(r.RequestURI)
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vars := mux.Vars(r)
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name := vars["name"]
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if container := rtime.Get(name); container != nil {
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if err := container.Start(); err != nil {
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http.Error(w, "Error starting container "+name+": "+err.Error(), http.StatusInternalServerError)
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return
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}
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} else {
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http.Error(w, "No such container: "+name, http.StatusInternalServerError)
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return
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}
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w.WriteHeader(200)
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})
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r.Path("/containers/{name:.*}/stop").Methods("POST").HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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log.Println(r.RequestURI)
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vars := mux.Vars(r)
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name := vars["name"]
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if container := rtime.Get(name); container != nil {
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if err := container.Stop(); err != nil {
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http.Error(w, "Error stopping container "+name+": "+err.Error(), http.StatusInternalServerError)
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return
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}
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} else {
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http.Error(w, "No such container: "+name, http.StatusInternalServerError)
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return
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}
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w.WriteHeader(200)
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})
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return http.ListenAndServe(addr, r)
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}
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