api/types/container: move ExecInspect type to client

This type was introduced in [moby@3f9f231], at which type no API response
types were defined, and the [`containerRouter.getExecByID`] would return
the daemon's internal [`exec.Config`] type from [`backend.ContainerExecInspect`].

Tracing back history about the discrepancy between the type used by the client
and the actual response type; commit [moby@2a34207] added the missing type in
the API, which was documented as part of the API swagger definition since the
start ([moby@0243936]), and updated in [moby@74cb739], so we can't use the
reduced struct as response type.

[moby@3f9f231]: 3f9f23114f
[moby@2a34207]: 2a342079c6
[`containerRouter.getExecByID`]: 3f9f23114f/api/server/router/container/exec.go (L18-L25)
[`backend.ContainerExecInspect`]: 3f9f23114f/api/server/router/container/backend.go (L18)
[`exec.Config`]: 3f9f23114f/daemon/exec/exec.go (L13-L31)
[moby@0243936]: 0243936d92
[moby@74cb739]: 74cb739766

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

api/types/container/exec.go

@@ -8,21 +8,6 @@ import "github.com/moby/moby/api/types/common"
 // TODO(thaJeztah): make this a distinct type.
 type ExecCreateResponse = common.IDResponse
 
-// ExecInspect holds information returned by exec inspect.
-//
-// It is used by the client to unmarshal a [ExecInspectResponse],
-// but currently only provides a subset of the information included
-// in that type.
-//
-// TODO(thaJeztah): merge [ExecInspect] and [ExecInspectResponse],
-type ExecInspect struct {
-	ExecID      string `json:"ID"`
-	ContainerID string `json:"ContainerID"`
-	Running     bool   `json:"Running"`
-	ExitCode    int    `json:"ExitCode"`
-	Pid         int    `json:"Pid"`
-}
-
 // ExecInspectResponse is the API response for the "GET /exec/{id}/json"
 // endpoint and holds information about and exec.
 type ExecInspectResponse struct {

client/client_interfaces.go

@@ -71,7 +71,7 @@ type ContainerAPIClient interface {
 	ContainerDiff(ctx context.Context, container string) ([]container.FilesystemChange, error)
 	ContainerExecAttach(ctx context.Context, execID string, options ExecAttachOptions) (HijackedResponse, error)
 	ContainerExecCreate(ctx context.Context, container string, options ExecCreateOptions) (container.ExecCreateResponse, error)
-	ContainerExecInspect(ctx context.Context, execID string) (container.ExecInspect, error)
+	ContainerExecInspect(ctx context.Context, execID string) (ExecInspect, error)
 	ContainerExecResize(ctx context.Context, execID string, options ContainerResizeOptions) error
 	ContainerExecStart(ctx context.Context, execID string, options ExecStartOptions) error
 	ContainerExport(ctx context.Context, container string) (io.ReadCloser, error)

client/container_exec.go

@@ -146,15 +146,43 @@ func (cli *Client) ContainerExecAttach(ctx context.Context, execID string, confi
 	})
 }
 
+// ExecInspect holds information returned by exec inspect.
+//
+// It provides a subset of the information included in [container.ExecInspectResponse].
+//
+// TODO(thaJeztah): include all fields of [container.ExecInspectResponse] ?
+type ExecInspect struct {
+	ExecID      string `json:"ID"`
+	ContainerID string `json:"ContainerID"`
+	Running     bool   `json:"Running"`
+	ExitCode    int    `json:"ExitCode"`
+	Pid         int    `json:"Pid"`
+}
+
 // ContainerExecInspect returns information about a specific exec process on the docker host.
-func (cli *Client) ContainerExecInspect(ctx context.Context, execID string) (container.ExecInspect, error) {
+func (cli *Client) ContainerExecInspect(ctx context.Context, execID string) (ExecInspect, error) {
 	resp, err := cli.get(ctx, "/exec/"+execID+"/json", nil, nil)
 	defer ensureReaderClosed(resp)
 	if err != nil {
-		return container.ExecInspect{}, err
+		return ExecInspect{}, err
 	}
 
-	var response container.ExecInspect
+	var response container.ExecInspectResponse
 	err = json.NewDecoder(resp.Body).Decode(&response)
-	return response, err
+	if err != nil {
+		return ExecInspect{}, err
+	}
+
+	var ec int
+	if response.ExitCode != nil {
+		ec = *response.ExitCode
+	}
+
+	return ExecInspect{
+		ExecID:      response.ID,
+		ContainerID: response.ContainerID,
+		Running:     response.Running,
+		ExitCode:    ec,
+		Pid:         response.Pid,
+	}, nil
 }

client/container_exec_test.go

@@ -146,10 +146,10 @@ func TestContainerExecInspect(t *testing.T) {
 	client, err := NewClientWithOpts(
 		WithMockClient(func(req *http.Request) (*http.Response, error) {
 			if !strings.HasPrefix(req.URL.Path, expectedURL) {
-				return nil, fmt.Errorf("Expected URL '%s', got '%s'", expectedURL, req.URL)
+				return nil, fmt.Errorf("expected URL '%s', got '%s'", expectedURL, req.URL)
 			}
-			b, err := json.Marshal(container.ExecInspect{
-				ExecID:      "exec_id",
+			b, err := json.Marshal(container.ExecInspectResponse{
+				ID:          "exec_id",
 				ContainerID: "container_id",
 			})
 			if err != nil {

vendor/github.com/moby/moby/api/types/container/exec.go

@@ -8,21 +8,6 @@ import "github.com/moby/moby/api/types/common"
 // TODO(thaJeztah): make this a distinct type.
 type ExecCreateResponse = common.IDResponse
 
-// ExecInspect holds information returned by exec inspect.
-//
-// It is used by the client to unmarshal a [ExecInspectResponse],
-// but currently only provides a subset of the information included
-// in that type.
-//
-// TODO(thaJeztah): merge [ExecInspect] and [ExecInspectResponse],
-type ExecInspect struct {
-	ExecID      string `json:"ID"`
-	ContainerID string `json:"ContainerID"`
-	Running     bool   `json:"Running"`
-	ExitCode    int    `json:"ExitCode"`
-	Pid         int    `json:"Pid"`
-}
-
 // ExecInspectResponse is the API response for the "GET /exec/{id}/json"
 // endpoint and holds information about and exec.
 type ExecInspectResponse struct {

vendor/github.com/moby/moby/client/client_interfaces.go

@@ -71,7 +71,7 @@ type ContainerAPIClient interface {
 	ContainerDiff(ctx context.Context, container string) ([]container.FilesystemChange, error)
 	ContainerExecAttach(ctx context.Context, execID string, options ExecAttachOptions) (HijackedResponse, error)
 	ContainerExecCreate(ctx context.Context, container string, options ExecCreateOptions) (container.ExecCreateResponse, error)
-	ContainerExecInspect(ctx context.Context, execID string) (container.ExecInspect, error)
+	ContainerExecInspect(ctx context.Context, execID string) (ExecInspect, error)
 	ContainerExecResize(ctx context.Context, execID string, options ContainerResizeOptions) error
 	ContainerExecStart(ctx context.Context, execID string, options ExecStartOptions) error
 	ContainerExport(ctx context.Context, container string) (io.ReadCloser, error)

vendor/github.com/moby/moby/client/container_exec.go

@@ -146,15 +146,43 @@ func (cli *Client) ContainerExecAttach(ctx context.Context, execID string, confi
 	})
 }
 
+// ExecInspect holds information returned by exec inspect.
+//
+// It provides a subset of the information included in [container.ExecInspectResponse].
+//
+// TODO(thaJeztah): include all fields of [container.ExecInspectResponse] ?
+type ExecInspect struct {
+	ExecID      string `json:"ID"`
+	ContainerID string `json:"ContainerID"`
+	Running     bool   `json:"Running"`
+	ExitCode    int    `json:"ExitCode"`
+	Pid         int    `json:"Pid"`
+}
+
 // ContainerExecInspect returns information about a specific exec process on the docker host.
-func (cli *Client) ContainerExecInspect(ctx context.Context, execID string) (container.ExecInspect, error) {
+func (cli *Client) ContainerExecInspect(ctx context.Context, execID string) (ExecInspect, error) {
 	resp, err := cli.get(ctx, "/exec/"+execID+"/json", nil, nil)
 	defer ensureReaderClosed(resp)
 	if err != nil {
-		return container.ExecInspect{}, err
+		return ExecInspect{}, err
 	}
 
-	var response container.ExecInspect
+	var response container.ExecInspectResponse
 	err = json.NewDecoder(resp.Body).Decode(&response)
-	return response, err
+	if err != nil {
+		return ExecInspect{}, err
+	}
+
+	var ec int
+	if response.ExitCode != nil {
+		ec = *response.ExitCode
+	}
+
+	return ExecInspect{
+		ExecID:      response.ID,
+		ContainerID: response.ContainerID,
+		Running:     response.Running,
+		ExitCode:    ec,
+		Pid:         response.Pid,
+	}, nil
 }