Support podman-remote stop container(s)

* Clean up adapter code
* Add GetContainersByContext to Varlink API
* Add missing comments
* Restore save command
* Restore error type mapping when using varlink

Signed-off-by: Jhon Honce <jhonce@redhat.com>

13 files changed, 308 insertions, 132 deletions

diff --git a/API.md b/API.md
index c4f23c9bd..d255037c1 100755
--- a/API.md
+++ b/API.md
@@ -43,6 +43,8 @@ in the [API.md](https://github.com/containers/libpod/blob/master/API.md) file in
 
 [func GetContainerStats(name: string) ContainerStats](#GetContainerStats)
 
+[func GetContainersByContext(all: bool, latest: bool, args: []string) []string](#GetContainersByContext)
+
 [func GetImage(id: string) Image](#GetImage)
 
 [func GetInfo() PodmanInfo](#GetInfo)
@@ -460,6 +462,13 @@ $ varlink call -m unix:/run/podman/io.podman/io.podman.GetContainerStats '{"name
   }
 }
 ~~~
+### <a name="GetContainersByContext"></a>func GetContainersByContext
+<div style="background-color: #E8E8E8; padding: 15px; margin: 10px; border-radius: 10px;">
+
+method GetContainersByContext(all: [bool](https://godoc.org/builtin#bool), latest: [bool](https://godoc.org/builtin#bool), args: [[]string](#[]string)) [[]string](#[]string)</div>
+GetContainersByContext allows you to get a list of container ids depending on all, latest, or a list of
+container names.  The definition of latest container means the latest by creation date.  In a multi-
+user environment, results might differ from what you expect.
 ### <a name="GetImage"></a>func GetImage
 <div style="background-color: #E8E8E8; padding: 15px; margin: 10px; border-radius: 10px;">
 
diff --git a/cmd/podman/commands.go b/cmd/podman/commands.go
index 2f9a9cfe2..635b16e0d 100644
--- a/cmd/podman/commands.go
+++ b/cmd/podman/commands.go
@@ -32,7 +32,6 @@ func getMainCommands() []*cobra.Command {
 		_searchCommand,
 		_startCommand,
 		_statsCommand,
-		_stopCommand,
 		_topCommand,
 		_umountCommand,
 		_unpauseCommand,
diff --git a/cmd/podman/errors.go b/cmd/podman/errors.go
index 2572b8779..9731037f4 100644
--- a/cmd/podman/errors.go
+++ b/cmd/podman/errors.go
@@ -1,3 +1,5 @@
+// +build !remoteclient
+
 package main
 
 import (
@@ -13,7 +15,8 @@ func outputError(err error) {
 	if MainGlobalOpts.LogLevel == "debug" {
 		logrus.Errorf(err.Error())
 	} else {
-		if ee, ok := err.(*exec.ExitError); ok {
+		ee, ok := err.(*exec.ExitError)
+		if ok {
 			if status, ok := ee.Sys().(syscall.WaitStatus); ok {
 				exitCode = status.ExitStatus()
 			}
diff --git a/cmd/podman/errors_remote.go b/cmd/podman/errors_remote.go
new file mode 100644
index 000000000..ab255ea56
--- /dev/null
+++ b/cmd/podman/errors_remote.go
@@ -0,0 +1,43 @@
+// +build remoteclient
+
+package main
+
+import (
+	"fmt"
+	"os"
+	"os/exec"
+	"syscall"
+
+	"github.com/containers/libpod/cmd/podman/varlink"
+	"github.com/pkg/errors"
+	"github.com/sirupsen/logrus"
+)
+
+func outputError(err error) {
+	if MainGlobalOpts.LogLevel == "debug" {
+		logrus.Errorf(err.Error())
+	} else {
+		if ee, ok := err.(*exec.ExitError); ok {
+			if status, ok := ee.Sys().(syscall.WaitStatus); ok {
+				exitCode = status.ExitStatus()
+			}
+		}
+		var ne error
+		switch e := err.(type) {
+		// For some reason golang wont let me list them with commas so listing them all.
+		case *iopodman.ImageNotFound:
+			ne = errors.New(e.Reason)
+		case *iopodman.ContainerNotFound:
+			ne = errors.New(e.Reason)
+		case *iopodman.PodNotFound:
+			ne = errors.New(e.Reason)
+		case *iopodman.VolumeNotFound:
+			ne = errors.New(e.Reason)
+		case *iopodman.ErrorOccurred:
+			ne = errors.New(e.Reason)
+		default:
+			ne = err
+		}
+		fmt.Fprintln(os.Stderr, "Error:", ne.Error())
+	}
+}
diff --git a/cmd/podman/main.go b/cmd/podman/main.go
index 98e2f23ca..b3faf05c0 100644
--- a/cmd/podman/main.go
+++ b/cmd/podman/main.go
@@ -49,6 +49,7 @@ var mainCommands = []*cobra.Command{
 	_pushCommand,
 	&_rmiCommand,
 	_saveCommand,
+	_stopCommand,
 	_tagCommand,
 	_versionCommand,
 	imageCommand.Command,
diff --git a/cmd/podman/stop.go b/cmd/podman/stop.go
index ab9a2cf38..7bd160494 100644
--- a/cmd/podman/stop.go
+++ b/cmd/podman/stop.go
@@ -2,15 +2,14 @@ package main
 
 import (
 	"fmt"
+	"reflect"
 
 	"github.com/containers/libpod/cmd/podman/cliconfig"
-	"github.com/containers/libpod/cmd/podman/libpodruntime"
-	"github.com/containers/libpod/cmd/podman/shared"
 	"github.com/containers/libpod/libpod"
+	"github.com/containers/libpod/pkg/adapter"
 	"github.com/containers/libpod/pkg/rootless"
-	opentracing "github.com/opentracing/opentracing-go"
+	"github.com/opentracing/opentracing-go"
 	"github.com/pkg/errors"
-	"github.com/sirupsen/logrus"
 	"github.com/spf13/cobra"
 )
 
@@ -52,63 +51,43 @@ func init() {
 	markFlagHiddenForRemoteClient("latest", flags)
 }
 
+// stopCmd stops a container or containers
 func stopCmd(c *cliconfig.StopValues) error {
+	if c.Flag("timeout").Changed && c.Flag("time").Changed {
+		return errors.New("the --timeout and --time flags are mutually exclusive")
+	}
+
 	if c.Bool("trace") {
 		span, _ := opentracing.StartSpanFromContext(Ctx, "stopCmd")
 		defer span.Finish()
 	}
 
 	rootless.SetSkipStorageSetup(true)
-	runtime, err := libpodruntime.GetRuntime(&c.PodmanCommand)
+	runtime, err := adapter.GetRuntime(&c.PodmanCommand)
 	if err != nil {
 		return errors.Wrapf(err, "could not get runtime")
 	}
 	defer runtime.Shutdown(false)
 
-	containers, err := getAllOrLatestContainers(&c.PodmanCommand, runtime, libpod.ContainerStateRunning, "running")
+	ok, failures, err := runtime.StopContainers(getContext(), c)
 	if err != nil {
-		if len(containers) == 0 {
-			return err
-		}
-		fmt.Println(err.Error())
+		return err
 	}
 
-	if c.Flag("timeout").Changed && c.Flag("time").Changed {
-		return errors.New("the --timeout and --time flags are mutually exclusive")
+	for _, id := range ok {
+		fmt.Println(id)
 	}
 
-	var stopFuncs []shared.ParallelWorkerInput
-	for _, ctr := range containers {
-		con := ctr
-		var stopTimeout uint
-		if c.Flag("timeout").Changed || c.Flag("time").Changed {
-			stopTimeout = c.Timeout
-		} else {
-			stopTimeout = ctr.StopTimeout()
-			logrus.Debugf("Set timeout to container %s default (%d)", ctr.ID(), stopTimeout)
-		}
-		f := func() error {
-			if err := con.StopWithTimeout(stopTimeout); err != nil {
-				if errors.Cause(err) == libpod.ErrCtrStopped {
-					logrus.Debugf("Container %s already stopped", con.ID())
-					return nil
-				}
-				return err
-			}
-			return nil
-		}
-		stopFuncs = append(stopFuncs, shared.ParallelWorkerInput{
-			ContainerID:  con.ID(),
-			ParallelFunc: f,
-		})
-	}
+	if len(failures) > 0 {
+		keys := reflect.ValueOf(failures).MapKeys()
+		lastKey := keys[len(keys)-1].String()
+		lastErr := failures[lastKey]
+		delete(failures, lastKey)
 
-	maxWorkers := shared.Parallelize("stop")
-	if c.GlobalIsSet("max-workers") {
-		maxWorkers = c.GlobalFlags.MaxWorks
+		for _, err := range failures {
+			outputError(err)
+		}
+		return lastErr
 	}
-	logrus.Debugf("Setting maximum workers to %d", maxWorkers)
-
-	stopErrors, errCount := shared.ParallelExecuteWorkerPool(maxWorkers, stopFuncs)
-	return printParallelOutput(stopErrors, errCount)
+	return nil
 }
diff --git a/cmd/podman/varlink/io.podman.varlink b/cmd/podman/varlink/io.podman.varlink
index 618af3481..73e6c15f9 100644
--- a/cmd/podman/varlink/io.podman.varlink
+++ b/cmd/podman/varlink/io.podman.varlink
@@ -459,6 +459,11 @@ method ListContainers() -> (containers: []Container)
 # [InspectContainer](#InspectContainer).
 method GetContainer(id: string) -> (container: Container)
 
+# GetContainersByContext allows you to get a list of container ids depending on all, latest, or a list of
+# container names.  The definition of latest container means the latest by creation date.  In a multi-
+# user environment, results might differ from what you expect.
+method GetContainersByContext(all: bool, latest: bool, args: []string) -> (containers: []string)
+
 # CreateContainer creates a new container from an image.  It uses a [Create](#Create) type for input. The minimum
 # input required for CreateContainer is an image name.  If the image name is not found, an [ImageNotFound](#ImageNotFound)
 # error will be returned.  Otherwise, the ID of the newly created container will be returned.
diff --git a/pkg/adapter/containers.go b/pkg/adapter/containers.go
new file mode 100644
index 000000000..b0c75cf49
--- /dev/null
+++ b/pkg/adapter/containers.go
@@ -0,0 +1,72 @@
+// +build !remoteclient
+
+package adapter
+
+import (
+	"context"
+
+	"github.com/containers/libpod/cmd/podman/cliconfig"
+	"github.com/containers/libpod/libpod"
+	"github.com/containers/libpod/pkg/adapter/shortcuts"
+	"github.com/pkg/errors"
+)
+
+// GetLatestContainer gets the latest Container and wraps it in an adapter Container
+func (r *LocalRuntime) GetLatestContainer() (*Container, error) {
+	Container := Container{}
+	c, err := r.Runtime.GetLatestContainer()
+	Container.Container = c
+	return &Container, err
+}
+
+// GetAllContainers gets all Containers and wraps each one in an adapter Container
+func (r *LocalRuntime) GetAllContainers() ([]*Container, error) {
+	var containers []*Container
+	allContainers, err := r.Runtime.GetAllContainers()
+	if err != nil {
+		return nil, err
+	}
+
+	for _, c := range allContainers {
+		containers = append(containers, &Container{c})
+	}
+	return containers, nil
+}
+
+// LookupContainer gets a Container by name or id and wraps it in an adapter Container
+func (r *LocalRuntime) LookupContainer(idOrName string) (*Container, error) {
+	ctr, err := r.Runtime.LookupContainer(idOrName)
+	if err != nil {
+		return nil, err
+	}
+	return &Container{ctr}, nil
+}
+
+// StopContainers stops container(s) based on CLI inputs.
+// Returns list of successful id(s), map of failed id(s) + error, or error not from container
+func (r *LocalRuntime) StopContainers(ctx context.Context, cli *cliconfig.StopValues) ([]string, map[string]error, error) {
+	timeout := uint(0)
+	if cli.Flags().Changed("timeout") {
+		timeout = uint(cli.Timeout)
+	}
+
+	var (
+		ok       = []string{}
+		failures = map[string]error{}
+	)
+
+	ctrs, err := shortcuts.GetContainersByContext(cli.All, cli.Latest, cli.InputArgs, r.Runtime)
+	if err != nil {
+		return ok, failures, err
+	}
+
+	for _, c := range ctrs {
+		err := c.StopWithTimeout(timeout)
+		if err != nil && errors.Cause(err) != libpod.ErrCtrStopped {
+			failures[c.ID()] = err
+		} else {
+			ok = append(ok, c.ID())
+		}
+	}
+	return ok, failures, nil
+}
diff --git a/pkg/adapter/containers_remote.go b/pkg/adapter/containers_remote.go
index 3f43a6905..df40c8efd 100644
--- a/pkg/adapter/containers_remote.go
+++ b/pkg/adapter/containers_remote.go
@@ -3,8 +3,13 @@
 package adapter
 
 import (
+	"context"
 	"encoding/json"
+	"errors"
+
+	"github.com/containers/libpod/cmd/podman/cliconfig"
 	"github.com/containers/libpod/cmd/podman/shared"
+	"github.com/sirupsen/logrus"
 
 	iopodman "github.com/containers/libpod/cmd/podman/varlink"
 	"github.com/containers/libpod/libpod"
@@ -29,6 +34,70 @@ func (c *Container) ID() string {
 	return c.config.ID
 }
 
+// Config returns a container config
+func (r *LocalRuntime) Config(name string) *libpod.ContainerConfig {
+	// TODO the Spec being returned is not populated.  Matt and I could not figure out why.  Will defer
+	// further looking into it for after devconf.
+	// The libpod function for this has no errors so we are kind of in a tough
+	// spot here.  Logging the errors for now.
+	reply, err := iopodman.ContainerConfig().Call(r.Conn, name)
+	if err != nil {
+		logrus.Error("call to container.config failed")
+	}
+	data := libpod.ContainerConfig{}
+	if err := json.Unmarshal([]byte(reply), &data); err != nil {
+		logrus.Error("failed to unmarshal container inspect data")
+	}
+	return &data
+
+}
+
+// ContainerState returns the "state" of the container.
+func (r *LocalRuntime) ContainerState(name string) (*libpod.ContainerState, error) { // no-lint
+	reply, err := iopodman.ContainerStateData().Call(r.Conn, name)
+	if err != nil {
+		return nil, err
+	}
+	data := libpod.ContainerState{}
+	if err := json.Unmarshal([]byte(reply), &data); err != nil {
+		return nil, err
+	}
+	return &data, err
+
+}
+
+// LookupContainer gets basic information about container over a varlink
+// connection and then translates it to a *Container
+func (r *LocalRuntime) LookupContainer(idOrName string) (*Container, error) {
+	state, err := r.ContainerState(idOrName)
+	if err != nil {
+		return nil, err
+	}
+	config := r.Config(idOrName)
+	if err != nil {
+		return nil, err
+	}
+
+	return &Container{
+		remoteContainer{
+			r,
+			config,
+			state,
+		},
+	}, nil
+}
+
+func (r *LocalRuntime) GetLatestContainer() (*Container, error) {
+	reply, err := iopodman.GetContainersByContext().Call(r.Conn, false, true, nil)
+	if err != nil {
+		return nil, err
+	}
+	if len(reply) > 0 {
+		return r.LookupContainer(reply[0])
+	}
+	return nil, errors.New("no containers exist")
+}
+
 // GetArtifact returns a container's artifacts
 func (c *Container) GetArtifact(name string) ([]byte, error) {
 	var data []byte
@@ -55,18 +124,42 @@ func (c *Container) Name() string {
 	return c.config.Name
 }
 
+// StopContainers stops requested containers using CLI inputs.
+// Returns the list of stopped container ids, map of failed to stop container ids + errors, or any non-container error
+func (r *LocalRuntime) StopContainers(ctx context.Context, cli *cliconfig.StopValues) ([]string, map[string]error, error) {
+	var (
+		ok       = []string{}
+		failures = map[string]error{}
+	)
+
+	ids, err := iopodman.GetContainersByContext().Call(r.Conn, cli.All, cli.Latest, cli.InputArgs)
+	if err != nil {
+		return ok, failures, err
+	}
+
+	for _, id := range ids {
+		stopped, err := iopodman.StopContainer().Call(r.Conn, id, int64(cli.Timeout))
+		if err != nil {
+			failures[id] = err
+		} else {
+			ok = append(ok, stopped)
+		}
+	}
+	return ok, failures, nil
+}
+
 // BatchContainerOp is wrapper func to mimic shared's function with a similar name meant for libpod
 func BatchContainerOp(ctr *Container, opts shared.PsOptions) (shared.BatchContainerStruct, error) {
 	// TODO If pod ps ever shows container's sizes, re-enable this code; otherwise it isn't needed
 	// and would be a perf hit
-	//data, err := ctr.Inspect(true)
-	//if err != nil {
-	//	return shared.BatchContainerStruct{}, err
-	//}
+	// data, err := ctr.Inspect(true)
+	// if err != nil {
+	// 	return shared.BatchContainerStruct{}, err
+	// }
 	//
-	//size := new(shared.ContainerSize)
-	//size.RootFsSize = data.SizeRootFs
-	//size.RwSize = data.SizeRw
+	// size := new(shared.ContainerSize)
+	// size.RootFsSize = data.SizeRootFs
+	// size.RwSize = data.SizeRw
 
 	bcs := shared.BatchContainerStruct{
 		ConConfig:   ctr.config,
@@ -75,7 +168,7 @@ func BatchContainerOp(ctr *Container, opts shared.PsOptions) (shared.BatchContai
 		Pid:         ctr.state.PID,
 		StartedTime: ctr.state.StartedTime,
 		ExitedTime:  ctr.state.FinishedTime,
-		//Size: size,
+		// Size: size,
 	}
 	return bcs, nil
 }
diff --git a/pkg/adapter/runtime.go b/pkg/adapter/runtime.go
index 8624981b1..5be2ca150 100644
--- a/pkg/adapter/runtime.go
+++ b/pkg/adapter/runtime.go
@@ -108,15 +108,6 @@ func (r *LocalRuntime) RemoveImage(ctx context.Context, img *ContainerImage, for
 	return r.Runtime.RemoveImage(ctx, img.Image, force)
 }
 
-// LookupContainer ...
-func (r *LocalRuntime) LookupContainer(idOrName string) (*Container, error) {
-	ctr, err := r.Runtime.LookupContainer(idOrName)
-	if err != nil {
-		return nil, err
-	}
-	return &Container{ctr}, nil
-}
-
 // PruneImages is wrapper into PruneImages within the image pkg
 func (r *LocalRuntime) PruneImages(all bool) ([]string, error) {
 	return r.ImageRuntime().PruneImages(all)
diff --git a/pkg/adapter/runtime_remote.go b/pkg/adapter/runtime_remote.go
index 29b43e9b0..14cda7bff 100644
--- a/pkg/adapter/runtime_remote.go
+++ b/pkg/adapter/runtime_remote.go
@@ -5,7 +5,6 @@ package adapter
 import (
 	"bufio"
 	"context"
-	"encoding/json"
 	"fmt"
 	"io"
 	"io/ioutil"
@@ -49,14 +48,13 @@ func GetRuntime(c *cliconfig.PodmanCommand) (*LocalRuntime, error) {
 	if err != nil {
 		return nil, err
 	}
-	rr := RemoteRuntime{
-		Conn:   conn,
-		Remote: true,
-	}
-	foo := LocalRuntime{
-		&rr,
-	}
-	return &foo, nil
+
+	return &LocalRuntime{
+		&RemoteRuntime{
+			Conn:   conn,
+			Remote: true,
+		},
+	}, nil
 }
 
 // Shutdown is a bogus wrapper for compat with the libpod runtime
@@ -315,66 +313,6 @@ func (ci *ContainerImage) History(ctx context.Context) ([]*image.History, error)
 	return imageHistories, nil
 }
 
-// LookupContainer gets basic information about container over a varlink
-// connection and then translates it to a *Container
-func (r *LocalRuntime) LookupContainer(idOrName string) (*Container, error) {
-	state, err := r.ContainerState(idOrName)
-	if err != nil {
-		return nil, err
-	}
-	config := r.Config(idOrName)
-	if err != nil {
-		return nil, err
-	}
-
-	rc := remoteContainer{
-		r,
-		config,
-		state,
-	}
-
-	c := Container{
-		rc,
-	}
-	return &c, nil
-}
-
-func (r *LocalRuntime) GetLatestContainer() (*Container, error) {
-	return nil, libpod.ErrNotImplemented
-}
-
-// ContainerState returns the "state" of the container.
-func (r *LocalRuntime) ContainerState(name string) (*libpod.ContainerState, error) { //no-lint
-	reply, err := iopodman.ContainerStateData().Call(r.Conn, name)
-	if err != nil {
-		return nil, err
-	}
-	data := libpod.ContainerState{}
-	if err := json.Unmarshal([]byte(reply), &data); err != nil {
-		return nil, err
-	}
-	return &data, err
-
-}
-
-// Config returns a container config
-func (r *LocalRuntime) Config(name string) *libpod.ContainerConfig {
-	// TODO the Spec being returned is not populated.  Matt and I could not figure out why.  Will defer
-	// further looking into it for after devconf.
-	// The libpod function for this has no errors so we are kind of in a tough
-	// spot here.  Logging the errors for now.
-	reply, err := iopodman.ContainerConfig().Call(r.Conn, name)
-	if err != nil {
-		logrus.Error("call to container.config failed")
-	}
-	data := libpod.ContainerConfig{}
-	if err := json.Unmarshal([]byte(reply), &data); err != nil {
-		logrus.Error("failed to unmarshal container inspect data")
-	}
-	return &data
-
-}
-
 // PruneImages is the wrapper call for a remote-client to prune images
 func (r *LocalRuntime) PruneImages(all bool) ([]string, error) {
 	return iopodman.ImagesPrune().Call(r.Conn, all)
diff --git a/pkg/adapter/shortcuts/shortcuts.go b/pkg/adapter/shortcuts/shortcuts.go
index 0633399ae..677d88457 100644
--- a/pkg/adapter/shortcuts/shortcuts.go
+++ b/pkg/adapter/shortcuts/shortcuts.go
@@ -25,3 +25,30 @@ func GetPodsByContext(all, latest bool, pods []string, runtime *libpod.Runtime)
 	}
 	return outpods, nil
 }
+
+// GetContainersByContext gets pods whether all, latest, or a slice of names/ids
+func GetContainersByContext(all, latest bool, names []string, runtime *libpod.Runtime) ([]*libpod.Container, error) {
+	var ctrs = []*libpod.Container{}
+
+	if all {
+		return runtime.GetAllContainers()
+	}
+
+	if latest {
+		c, err := runtime.GetLatestContainer()
+		if err != nil {
+			return nil, err
+		}
+		ctrs = append(ctrs, c)
+		return ctrs, nil
+	}
+
+	for _, c := range names {
+		ctr, err := runtime.LookupContainer(c)
+		if err != nil {
+			return nil, err
+		}
+		ctrs = append(ctrs, ctr)
+	}
+	return ctrs, nil
+}
diff --git a/pkg/varlinkapi/containers.go b/pkg/varlinkapi/containers.go
index ad9f107a7..27b8d15d2 100644
--- a/pkg/varlinkapi/containers.go
+++ b/pkg/varlinkapi/containers.go
@@ -13,6 +13,7 @@ import (
 	"github.com/containers/libpod/cmd/podman/shared"
 	"github.com/containers/libpod/cmd/podman/varlink"
 	"github.com/containers/libpod/libpod"
+	"github.com/containers/libpod/pkg/adapter/shortcuts"
 	cc "github.com/containers/libpod/pkg/spec"
 	"github.com/containers/storage/pkg/archive"
 	"github.com/pkg/errors"
@@ -60,6 +61,21 @@ func (i *LibpodAPI) GetContainer(call iopodman.VarlinkCall, id string) error {
 	return call.ReplyGetContainer(makeListContainer(ctr.ID(), batchInfo))
 }
 
+// GetContainersByContext returns a slice of container ids based on all, latest, or a list
+func (i *LibpodAPI) GetContainersByContext(call iopodman.VarlinkCall, all, latest bool, input []string) error {
+	var ids []string
+
+	ctrs, err := shortcuts.GetContainersByContext(all, latest, input, i.Runtime)
+	if err != nil {
+		return call.ReplyErrorOccurred(err.Error())
+	}
+
+	for _, c := range ctrs {
+		ids = append(ids, c.ID())
+	}
+	return call.ReplyGetContainersByContext(ids)
+}
+
 // InspectContainer ...
 func (i *LibpodAPI) InspectContainer(call iopodman.VarlinkCall, name string) error {
 	ctr, err := i.Runtime.LookupContainer(name)