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-rw-r--r--pkg/api/handlers/compat/containers_attach.go35
-rw-r--r--pkg/api/server/register_containers.go8
2 files changed, 24 insertions, 19 deletions
diff --git a/pkg/api/handlers/compat/containers_attach.go b/pkg/api/handlers/compat/containers_attach.go
index da7b5bb0c..80ad52aee 100644
--- a/pkg/api/handlers/compat/containers_attach.go
+++ b/pkg/api/handlers/compat/containers_attach.go
@@ -1,6 +1,7 @@
package compat
import (
+ "fmt"
"net/http"
"github.com/containers/libpod/libpod"
@@ -23,7 +24,9 @@ func AttachContainer(w http.ResponseWriter, r *http.Request) {
Stdin bool `schema:"stdin"`
Stdout bool `schema:"stdout"`
Stderr bool `schema:"stderr"`
- }{}
+ }{
+ Stream: true,
+ }
if err := decoder.Decode(&query, r.URL.Query()); err != nil {
utils.Error(w, "Error parsing parameters", http.StatusBadRequest, err)
return
@@ -61,16 +64,9 @@ func AttachContainer(w http.ResponseWriter, r *http.Request) {
return
}
- // TODO: Investigate supporting these.
- // Logs replays container logs over the attach socket.
- // Stream seems to break things up somehow? Not 100% clear.
- if query.Logs {
- utils.Error(w, "Unsupported parameter", http.StatusBadRequest, errors.Errorf("the logs parameter to attach is not presently supported"))
- return
- }
- // We only support stream=true or unset
- if _, found := r.URL.Query()["stream"]; found && query.Stream {
- utils.Error(w, "Unsupported parameter", http.StatusBadRequest, errors.Errorf("the stream parameter to attach is not presently supported"))
+ // At least one of these must be set
+ if !query.Stream && !query.Logs {
+ utils.Error(w, "Unsupported parameter", http.StatusBadRequest, errors.Errorf("at least one of Logs or Stream must be set"))
return
}
@@ -86,7 +82,13 @@ func AttachContainer(w http.ResponseWriter, r *http.Request) {
utils.InternalServerError(w, err)
return
}
- if !(state == define.ContainerStateCreated || state == define.ContainerStateRunning) {
+ // For Docker compatibility, we need to re-initialize containers in these states.
+ if state == define.ContainerStateConfigured || state == define.ContainerStateExited {
+ if err := ctr.Init(r.Context()); err != nil {
+ utils.InternalServerError(w, errors.Wrapf(err, "error preparing container %s for attach", ctr.ID()))
+ return
+ }
+ } else if !(state == define.ContainerStateCreated || state == define.ContainerStateRunning) {
utils.InternalServerError(w, errors.Wrapf(define.ErrCtrStateInvalid, "can only attach to created or running containers"))
return
}
@@ -98,20 +100,23 @@ func AttachContainer(w http.ResponseWriter, r *http.Request) {
return
}
- w.WriteHeader(http.StatusSwitchingProtocols)
-
connection, buffer, err := hijacker.Hijack()
if err != nil {
utils.InternalServerError(w, errors.Wrapf(err, "error hijacking connection"))
return
}
+ // This header string sourced from Docker:
+ // https://raw.githubusercontent.com/moby/moby/b95fad8e51bd064be4f4e58a996924f343846c85/api/server/router/container/container_routes.go
+ // Using literally to ensure compatability with existing clients.
+ fmt.Fprintf(connection, "HTTP/1.1 101 UPGRADED\r\nContent-Type: application/vnd.docker.raw-stream\r\nConnection: Upgrade\r\nUpgrade: tcp\r\n\r\n")
+
logrus.Debugf("Hijack for attach of container %s successful", ctr.ID())
// Perform HTTP attach.
// HTTPAttach will handle everything about the connection from here on
// (including closing it and writing errors to it).
- if err := ctr.HTTPAttach(connection, buffer, streams, detachKeys, nil); err != nil {
+ if err := ctr.HTTPAttach(connection, buffer, streams, detachKeys, nil, query.Stream, query.Logs); err != nil {
// We can't really do anything about errors anymore. HTTPAttach
// should be writing them to the connection.
logrus.Errorf("Error attaching to container %s: %v", ctr.ID(), err)
diff --git a/pkg/api/server/register_containers.go b/pkg/api/server/register_containers.go
index f126112d0..9ee900a11 100644
--- a/pkg/api/server/register_containers.go
+++ b/pkg/api/server/register_containers.go
@@ -517,13 +517,13 @@ func (s *APIServer) registerContainersHandlers(r *mux.Router) error {
// name: logs
// required: false
// type: boolean
- // description: Not yet supported
+ // description: Stream all logs from the container across the connection. Happens before streaming attach (if requested). At least one of logs or stream must be set
// - in: query
// name: stream
// required: false
// type: boolean
// default: true
- // description: If passed, must be set to true; stream=false is not yet supported
+ // description: Attach to the container. If unset, and logs is set, only the container's logs will be sent. At least one of stream or logs must be set
// - in: query
// name: stdout
// required: false
@@ -1194,13 +1194,13 @@ func (s *APIServer) registerContainersHandlers(r *mux.Router) error {
// name: logs
// required: false
// type: boolean
- // description: Not yet supported
+ // description: Stream all logs from the container across the connection. Happens before streaming attach (if requested). At least one of logs or stream must be set
// - in: query
// name: stream
// required: false
// type: boolean
// default: true
- // description: If passed, must be set to true; stream=false is not yet supported
+ // description: Attach to the container. If unset, and logs is set, only the container's logs will be sent. At least one of stream or logs must be set
// - in: query
// name: stdout
// required: false