Merge pull request #6583 from mheon/inspect_ctr_before_img

Fix podman inspect on overlapping/missing objects

2 files changed, 44 insertions, 14 deletions

diff --git a/cmd/podman/common/specgen.go b/cmd/podman/common/specgen.go
index c8d9888b7..0e4747954 100644
--- a/cmd/podman/common/specgen.go
+++ b/cmd/podman/common/specgen.go
@@ -627,7 +627,7 @@ func FillOutSpecGen(s *specgen.SpecGenerator, c *ContainerCLIOpts, args []string
 			if retries < 0 {
 				return errors.Errorf("must specify restart policy retry count as a number greater than 0")
 			}
-			var retriesUint uint = uint(retries)
+			var retriesUint = uint(retries)
 			s.RestartRetries = &retriesUint
 		default:
 			return errors.Errorf("invalid restart policy: may specify retries at most once")
diff --git a/cmd/podman/inspect/inspect.go b/cmd/podman/inspect/inspect.go
index 1ed033ec3..d80bbffdd 100644
--- a/cmd/podman/inspect/inspect.go
+++ b/cmd/podman/inspect/inspect.go
@@ -3,12 +3,14 @@ package inspect
 import (
 	"context"
 	"fmt"
+	"os"
 	"strings"
 
 	"github.com/containers/buildah/pkg/formats"
 	"github.com/containers/libpod/cmd/podman/registry"
 	"github.com/containers/libpod/pkg/domain/entities"
 	"github.com/pkg/errors"
+	"github.com/sirupsen/logrus"
 	"github.com/spf13/cobra"
 )
 
@@ -78,6 +80,7 @@ func newInspector(options entities.InspectOptions) (*inspector, error) {
 func (i *inspector) inspect(namesOrIDs []string) error {
 	// data - dumping place for inspection results.
 	var data []interface{} //nolint
+	var errs []error
 	ctx := context.Background()
 
 	if len(namesOrIDs) == 0 {
@@ -97,24 +100,27 @@ func (i *inspector) inspect(namesOrIDs []string) error {
 	// Inspect - note that AllType requires us to expensively query one-by-one.
 	switch tmpType {
 	case AllType:
-		all, err := i.inspectAll(ctx, namesOrIDs)
+		allData, allErrs, err := i.inspectAll(ctx, namesOrIDs)
 		if err != nil {
 			return err
 		}
-		data = all
+		data = allData
+		errs = allErrs
 	case ImageType:
-		imgData, err := i.imageEngine.Inspect(ctx, namesOrIDs, i.options)
+		imgData, allErrs, err := i.imageEngine.Inspect(ctx, namesOrIDs, i.options)
 		if err != nil {
 			return err
 		}
+		errs = allErrs
 		for i := range imgData {
 			data = append(data, imgData[i])
 		}
 	case ContainerType:
-		ctrData, err := i.containerEngine.ContainerInspect(ctx, namesOrIDs, i.options)
+		ctrData, allErrs, err := i.containerEngine.ContainerInspect(ctx, namesOrIDs, i.options)
 		if err != nil {
 			return err
 		}
+		errs = allErrs
 		for i := range ctrData {
 			data = append(data, ctrData[i])
 		}
@@ -122,30 +128,54 @@ func (i *inspector) inspect(namesOrIDs []string) error {
 		return errors.Errorf("invalid type %q: must be %q, %q or %q", i.options.Type, ImageType, ContainerType, AllType)
 	}
 
+	// Always print an empty array
+	if data == nil {
+		data = []interface{}{}
+	}
+
 	var out formats.Writer
 	if i.options.Format == "json" || i.options.Format == "" { // "" for backwards compat
 		out = formats.JSONStructArray{Output: data}
 	} else {
 		out = formats.StdoutTemplateArray{Output: data, Template: inspectFormat(i.options.Format)}
 	}
-	return out.Out()
+	if err := out.Out(); err != nil {
+		logrus.Errorf("Error printing inspect output: %v", err)
+	}
+	if len(errs) > 0 {
+		if len(errs) > 1 {
+			for _, err := range errs[1:] {
+				fmt.Fprintf(os.Stderr, "error inspecting object: %v\n", err)
+			}
+		}
+		return errors.Errorf("error inspecting object: %v", errs[0])
+	}
+	return nil
 }
 
-func (i *inspector) inspectAll(ctx context.Context, namesOrIDs []string) ([]interface{}, error) {
+func (i *inspector) inspectAll(ctx context.Context, namesOrIDs []string) ([]interface{}, []error, error) {
 	var data []interface{} //nolint
+	allErrs := []error{}
 	for _, name := range namesOrIDs {
-		imgData, err := i.imageEngine.Inspect(ctx, []string{name}, i.options)
-		if err == nil {
-			data = append(data, imgData[0])
+		ctrData, errs, err := i.containerEngine.ContainerInspect(ctx, []string{name}, i.options)
+		if err != nil {
+			return nil, nil, err
+		}
+		if len(errs) == 0 {
+			data = append(data, ctrData[0])
 			continue
 		}
-		ctrData, err := i.containerEngine.ContainerInspect(ctx, []string{name}, i.options)
+		imgData, errs, err := i.imageEngine.Inspect(ctx, []string{name}, i.options)
 		if err != nil {
-			return nil, err
+			return nil, nil, err
+		}
+		if len(errs) > 0 {
+			allErrs = append(allErrs, errors.Errorf("no such object: %q", name))
+			continue
 		}
-		data = append(data, ctrData[0])
+		data = append(data, imgData[0])
 	}
-	return data, nil
+	return data, allErrs, nil
 }
 
 func inspectFormat(row string) string {