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-rw-r--r--pkg/api/handlers/compat/exec.go48
-rw-r--r--pkg/api/server/register_exec.go6
-rw-r--r--pkg/bindings/containers/exec.go29
-rw-r--r--pkg/domain/infra/abi/containers.go7
-rw-r--r--pkg/domain/infra/tunnel/containers.go23
-rw-r--r--pkg/specgen/generate/container_create.go17
6 files changed, 100 insertions, 30 deletions
diff --git a/pkg/api/handlers/compat/exec.go b/pkg/api/handlers/compat/exec.go
index 6865a3319..8f7016903 100644
--- a/pkg/api/handlers/compat/exec.go
+++ b/pkg/api/handlers/compat/exec.go
@@ -10,6 +10,7 @@ import (
"github.com/containers/libpod/libpod/define"
"github.com/containers/libpod/pkg/api/handlers"
"github.com/containers/libpod/pkg/api/handlers/utils"
+ "github.com/containers/libpod/pkg/specgen/generate"
"github.com/gorilla/mux"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
@@ -54,6 +55,24 @@ func ExecCreateHandler(w http.ResponseWriter, r *http.Request) {
libpodConfig.Privileged = input.Privileged
libpodConfig.User = input.User
+ // Make our exit command
+ storageConfig := runtime.StorageConfig()
+ runtimeConfig, err := runtime.GetConfig()
+ if err != nil {
+ utils.InternalServerError(w, err)
+ return
+ }
+ exitCommandArgs, err := generate.CreateExitCommandArgs(storageConfig, runtimeConfig, false, true, true)
+ if err != nil {
+ utils.InternalServerError(w, err)
+ return
+ }
+ libpodConfig.ExitCommand = exitCommandArgs
+
+ // Run the exit command after 5 minutes, to mimic Docker's exec cleanup
+ // behavior.
+ libpodConfig.ExitCommandDelay = 5 * 60
+
sessID, err := ctr.ExecCreate(libpodConfig)
if err != nil {
if errors.Cause(err) == define.ErrCtrStateInvalid {
@@ -104,15 +123,6 @@ func ExecInspectHandler(w http.ResponseWriter, r *http.Request) {
}
utils.WriteResponse(w, http.StatusOK, inspectOut)
-
- // Only for the Compat API: we want to remove sessions that were
- // stopped. This is very hacky, but should suffice for now.
- if !utils.IsLibpodRequest(r) && inspectOut.CanRemove {
- logrus.Infof("Pruning stale exec session %s from container %s", sessionID, sessionCtr.ID())
- if err := sessionCtr.ExecRemove(sessionID, false); err != nil && errors.Cause(err) != define.ErrNoSuchExecSession {
- logrus.Errorf("Error removing stale exec session %s from container %s: %v", sessionID, sessionCtr.ID(), err)
- }
- }
}
// ExecStartHandler runs a given exec session.
@@ -121,7 +131,7 @@ func ExecStartHandler(w http.ResponseWriter, r *http.Request) {
sessionID := mux.Vars(r)["id"]
- // TODO: We should read/support Tty and Detach from here.
+ // TODO: We should read/support Tty from here.
bodyParams := new(handlers.ExecStartConfig)
if err := json.NewDecoder(r.Body).Decode(&bodyParams); err != nil {
@@ -129,11 +139,6 @@ func ExecStartHandler(w http.ResponseWriter, r *http.Request) {
errors.Wrapf(err, "failed to decode parameters for %s", r.URL.String()))
return
}
- if bodyParams.Detach {
- utils.Error(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest,
- errors.Errorf("Detached exec is not yet supported"))
- return
- }
// TODO: Verify TTY setting against what inspect session was made with
sessionCtr, err := runtime.GetExecSessionContainer(sessionID)
@@ -154,6 +159,19 @@ func ExecStartHandler(w http.ResponseWriter, r *http.Request) {
return
}
+ if bodyParams.Detach {
+ // If we are detaching, we do NOT want to hijack.
+ // Instead, we perform a detached start, and return 200 if
+ // successful.
+ if err := sessionCtr.ExecStart(sessionID); err != nil {
+ utils.InternalServerError(w, err)
+ return
+ }
+ // This is a 200 despite having no content
+ utils.WriteResponse(w, http.StatusOK, "")
+ return
+ }
+
// Hijack the connection
hijacker, ok := w.(http.Hijacker)
if !ok {
diff --git a/pkg/api/server/register_exec.go b/pkg/api/server/register_exec.go
index 17181d286..af9a83496 100644
--- a/pkg/api/server/register_exec.go
+++ b/pkg/api/server/register_exec.go
@@ -13,7 +13,7 @@ func (s *APIServer) registerExecHandlers(r *mux.Router) error {
// tags:
// - exec (compat)
// summary: Create an exec instance
- // description: Run a command inside a running container.
+ // description: Create an exec session to run a command inside a running container. Exec sessions will be automatically removed 5 minutes after they exit.
// parameters:
// - in: path
// name: name
@@ -153,7 +153,7 @@ func (s *APIServer) registerExecHandlers(r *mux.Router) error {
// tags:
// - exec (compat)
// summary: Inspect an exec instance
- // description: Return low-level information about an exec instance. Stale (stopped) exec sessions will be auto-removed after inspect runs.
+ // description: Return low-level information about an exec instance.
// parameters:
// - in: path
// name: id
@@ -182,7 +182,7 @@ func (s *APIServer) registerExecHandlers(r *mux.Router) error {
// tags:
// - exec
// summary: Create an exec instance
- // description: Run a command inside a running container.
+ // description: Create an exec session to run a command inside a running container. Exec sessions will be automatically removed 5 minutes after they exit.
// parameters:
// - in: path
// name: name
diff --git a/pkg/bindings/containers/exec.go b/pkg/bindings/containers/exec.go
index 2aeeae1f8..73cfb5079 100644
--- a/pkg/bindings/containers/exec.go
+++ b/pkg/bindings/containers/exec.go
@@ -1,6 +1,7 @@
package containers
import (
+ "bytes"
"context"
"net/http"
"strings"
@@ -69,3 +70,31 @@ func ExecInspect(ctx context.Context, sessionID string) (*define.InspectExecSess
return respStruct, nil
}
+
+// ExecStart starts (but does not attach to) a given exec session.
+func ExecStart(ctx context.Context, sessionID string) error {
+ conn, err := bindings.GetClient(ctx)
+ if err != nil {
+ return err
+ }
+
+ logrus.Debugf("Starting exec session ID %q", sessionID)
+
+ // We force Detach to true
+ body := struct {
+ Detach bool `json:"Detach"`
+ }{
+ Detach: true,
+ }
+ bodyJSON, err := json.Marshal(body)
+ if err != nil {
+ return err
+ }
+
+ resp, err := conn.DoRequest(bytes.NewReader(bodyJSON), http.MethodPost, "/exec/%s/start", nil, nil, sessionID)
+ if err != nil {
+ return err
+ }
+
+ return resp.Process(nil)
+}
diff --git a/pkg/domain/infra/abi/containers.go b/pkg/domain/infra/abi/containers.go
index e982c7c11..706fcec47 100644
--- a/pkg/domain/infra/abi/containers.go
+++ b/pkg/domain/infra/abi/containers.go
@@ -613,12 +613,11 @@ func (ic *ContainerEngine) ContainerExecDetached(ctx context.Context, nameOrId s
if err != nil {
return "", errors.Wrapf(err, "error retrieving Libpod configuration to build exec exit command")
}
- podmanPath, err := os.Executable()
+ // TODO: Add some ability to toggle syslog
+ exitCommandArgs, err := generate.CreateExitCommandArgs(storageConfig, runtimeConfig, false, true, true)
if err != nil {
- return "", errors.Wrapf(err, "error retrieving executable to build exec exit command")
+ return "", errors.Wrapf(err, "error constructing exit command for exec session")
}
- // TODO: Add some ability to toggle syslog
- exitCommandArgs := generate.CreateExitCommandArgs(storageConfig, runtimeConfig, podmanPath, false, true, true)
execConfig.ExitCommand = exitCommandArgs
// Create and start the exec session
diff --git a/pkg/domain/infra/tunnel/containers.go b/pkg/domain/infra/tunnel/containers.go
index e1c859e7c..af9d94293 100644
--- a/pkg/domain/infra/tunnel/containers.go
+++ b/pkg/domain/infra/tunnel/containers.go
@@ -376,7 +376,7 @@ func (ic *ContainerEngine) ContainerAttach(ctx context.Context, nameOrId string,
return containers.Attach(ic.ClientCxt, nameOrId, &options.DetachKeys, nil, bindings.PTrue, options.Stdin, options.Stdout, options.Stderr, nil)
}
-func (ic *ContainerEngine) ContainerExec(ctx context.Context, nameOrId string, options entities.ExecOptions, streams define.AttachStreams) (int, error) {
+func makeExecConfig(options entities.ExecOptions) *handlers.ExecCreateConfig {
env := []string{}
for k, v := range options.Envs {
env = append(env, fmt.Sprintf("%s=%s", k, v))
@@ -395,6 +395,12 @@ func (ic *ContainerEngine) ContainerExec(ctx context.Context, nameOrId string, o
createConfig.WorkingDir = options.WorkDir
createConfig.Cmd = options.Cmd
+ return createConfig
+}
+
+func (ic *ContainerEngine) ContainerExec(ctx context.Context, nameOrId string, options entities.ExecOptions, streams define.AttachStreams) (int, error) {
+ createConfig := makeExecConfig(options)
+
sessionID, err := containers.ExecCreate(ic.ClientCxt, nameOrId, createConfig)
if err != nil {
return 125, err
@@ -412,8 +418,19 @@ func (ic *ContainerEngine) ContainerExec(ctx context.Context, nameOrId string, o
return inspectOut.ExitCode, nil
}
-func (ic *ContainerEngine) ContainerExecDetached(ctx context.Context, nameOrID string, options entities.ExecOptions) (string, error) {
- return "", errors.New("not implemented")
+func (ic *ContainerEngine) ContainerExecDetached(ctx context.Context, nameOrId string, options entities.ExecOptions) (string, error) {
+ createConfig := makeExecConfig(options)
+
+ sessionID, err := containers.ExecCreate(ic.ClientCxt, nameOrId, createConfig)
+ if err != nil {
+ return "", err
+ }
+
+ if err := containers.ExecStart(ic.ClientCxt, sessionID); err != nil {
+ return "", err
+ }
+
+ return sessionID, nil
}
func startAndAttach(ic *ContainerEngine, name string, detachKeys *string, input, output, errput *os.File) error { //nolint
diff --git a/pkg/specgen/generate/container_create.go b/pkg/specgen/generate/container_create.go
index ffd7fd4dd..7ddfed339 100644
--- a/pkg/specgen/generate/container_create.go
+++ b/pkg/specgen/generate/container_create.go
@@ -107,12 +107,12 @@ func MakeContainer(ctx context.Context, rt *libpod.Runtime, s *specgen.SpecGener
}
options = append(options, opts...)
- podmanPath, err := os.Executable()
+ // TODO: Enable syslog support - we'll need to put this in SpecGen.
+ exitCommandArgs, err := CreateExitCommandArgs(rt.StorageConfig(), rtc, false, s.Remove, false)
if err != nil {
return nil, err
}
- // TODO: Enable syslog support - we'll need to put this in SpecGen.
- options = append(options, libpod.WithExitCommand(CreateExitCommandArgs(rt.StorageConfig(), rtc, podmanPath, false, s.Remove, false)))
+ options = append(options, libpod.WithExitCommand(exitCommandArgs))
runtimeSpec, err := SpecGenToOCI(ctx, s, rt, rtc, newImage, finalMounts)
if err != nil {
@@ -229,13 +229,18 @@ func createContainerOptions(ctx context.Context, rt *libpod.Runtime, s *specgen.
return options, nil
}
-func CreateExitCommandArgs(storageConfig storage.StoreOptions, config *config.Config, podmanPath string, syslog, rm bool, exec bool) []string {
+func CreateExitCommandArgs(storageConfig storage.StoreOptions, config *config.Config, syslog, rm, exec bool) ([]string, error) {
// We need a cleanup process for containers in the current model.
// But we can't assume that the caller is Podman - it could be another
// user of the API.
// As such, provide a way to specify a path to Podman, so we can
// still invoke a cleanup process.
+ podmanPath, err := os.Executable()
+ if err != nil {
+ return nil, err
+ }
+
command := []string{podmanPath,
"--root", storageConfig.GraphRoot,
"--runroot", storageConfig.RunRoot,
@@ -265,9 +270,11 @@ func CreateExitCommandArgs(storageConfig storage.StoreOptions, config *config.Co
command = append(command, "--rm")
}
+ // This has to be absolutely last, to ensure that the exec session ID
+ // will be added after it by Libpod.
if exec {
command = append(command, "--exec")
}
- return command
+ return command, nil
}
generated by cgit v1.2.3-54-g00ecf (git 2.39.0) at 2024-09-30 09:40:08 +0000