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-rw-r--r--pkg/api/handlers/libpod/containers_stats.go73
-rw-r--r--pkg/api/server/register_containers.go31
2 files changed, 103 insertions, 1 deletions
diff --git a/pkg/api/handlers/libpod/containers_stats.go b/pkg/api/handlers/libpod/containers_stats.go
new file mode 100644
index 000000000..3066d5ebc
--- /dev/null
+++ b/pkg/api/handlers/libpod/containers_stats.go
@@ -0,0 +1,73 @@
+package libpod
+
+import (
+ "encoding/json"
+ "net/http"
+ "time"
+
+ "github.com/containers/podman/v2/libpod"
+ "github.com/containers/podman/v2/pkg/api/handlers/utils"
+ "github.com/containers/podman/v2/pkg/domain/entities"
+ "github.com/containers/podman/v2/pkg/domain/infra/abi"
+ "github.com/gorilla/schema"
+ "github.com/pkg/errors"
+ "github.com/sirupsen/logrus"
+)
+
+const DefaultStatsPeriod = 5 * time.Second
+
+func StatsContainer(w http.ResponseWriter, r *http.Request) {
+ runtime := r.Context().Value("runtime").(*libpod.Runtime)
+ decoder := r.Context().Value("decoder").(*schema.Decoder)
+
+ query := struct {
+ Containers []string `schema:"containers"`
+ Stream bool `schema:"stream"`
+ }{
+ Stream: true,
+ }
+ if err := decoder.Decode(&query, r.URL.Query()); err != nil {
+ utils.Error(w, "Something went wrong.", http.StatusBadRequest, errors.Wrapf(err, "Failed to parse parameters for %s", r.URL.String()))
+ return
+ }
+
+ // Reduce code duplication and use the local/abi implementation of
+ // container stats.
+ containerEngine := abi.ContainerEngine{Libpod: runtime}
+
+ statsOptions := entities.ContainerStatsOptions{
+ All: len(query.Containers) == 0, // no containers -> query all of them
+ NoStream: !query.Stream,
+ }
+
+ // Stats will stop if the connection is closed.
+ statsChan, err := containerEngine.ContainerStats(r.Context(), query.Containers, statsOptions)
+ if err != nil {
+ utils.InternalServerError(w, err)
+ return
+ }
+
+ // Write header and content type.
+ w.WriteHeader(http.StatusOK)
+ w.Header().Add("Content-Type", "application/json")
+ if flusher, ok := w.(http.Flusher); ok {
+ flusher.Flush()
+ }
+
+ // Setup JSON encoder for streaming.
+ coder := json.NewEncoder(w)
+ coder.SetEscapeHTML(true)
+
+ for stats := range statsChan {
+ if err := coder.Encode(stats); err != nil {
+ // Note: even when streaming, the stats goroutine will
+ // be notified (and stop) as the connection will be
+ // closed.
+ logrus.Errorf("Unable to encode stats: %v", err)
+ return
+ }
+ if flusher, ok := w.(http.Flusher); ok {
+ flusher.Flush()
+ }
+ }
+}
diff --git a/pkg/api/server/register_containers.go b/pkg/api/server/register_containers.go
index 0ad5d29ea..870c6a90c 100644
--- a/pkg/api/server/register_containers.go
+++ b/pkg/api/server/register_containers.go
@@ -1013,7 +1013,7 @@ func (s *APIServer) registerContainersHandlers(r *mux.Router) error {
// tags:
// - containers
// summary: Get stats for a container
- // description: This returns a live stream of a container’s resource usage statistics.
+ // description: DEPRECATED. This endpoint will be removed with the next major release. Please use /libpod/containers/stats instead.
// parameters:
// - in: path
// name: name
@@ -1035,6 +1035,35 @@ func (s *APIServer) registerContainersHandlers(r *mux.Router) error {
// 500:
// $ref: "#/responses/InternalError"
r.HandleFunc(VersionedPath("/libpod/containers/{name}/stats"), s.APIHandler(compat.StatsContainer)).Methods(http.MethodGet)
+ // swagger:operation GET /libpod/containers/stats libpod libpodStatsContainers
+ // ---
+ // tags:
+ // - containers
+ // summary: Get stats for one or more containers
+ // description: Return a live stream of resource usage statistics of one or more container. If no container is specified, the statistics of all containers are returned.
+ // parameters:
+ // - in: query
+ // name: containers
+ // description: names or IDs of containers
+ // type: array
+ // items:
+ // type: string
+ // - in: query
+ // name: stream
+ // type: boolean
+ // default: true
+ // description: Stream the output
+ // produces:
+ // - application/json
+ // responses:
+ // 200:
+ // description: no error
+ // 404:
+ // $ref: "#/responses/NoSuchContainer"
+ // 500:
+ // $ref: "#/responses/InternalError"
+ r.HandleFunc(VersionedPath("/libpod/containers/stats"), s.APIHandler(libpod.StatsContainer)).Methods(http.MethodGet)
+
// swagger:operation GET /libpod/containers/{name}/top libpod libpodTopContainer
// ---
// tags: