From 18d66136c1b9180f9571b7dc68a904ca82e0ba9c Mon Sep 17 00:00:00 2001
From: baude <bbaude@redhat.com>
Date: Tue, 16 Apr 2019 10:02:54 -0500
Subject: podman remote-client restart containers

add the ability to restart containers with the remote-client

Signed-off-by: baude <bbaude@redhat.com>
---
 pkg/adapter/containers.go        | 69 +++++++++++++++++++++++++++++++++++
 pkg/adapter/containers_remote.go | 79 ++++++++++++++++++++++++++++++++++++++++
 2 files changed, 148 insertions(+)

(limited to 'pkg/adapter')

diff --git a/pkg/adapter/containers.go b/pkg/adapter/containers.go
index 5279f11b2..1c0a60234 100644
--- a/pkg/adapter/containers.go
+++ b/pkg/adapter/containers.go
@@ -694,3 +694,72 @@ func (r *LocalRuntime) UnpauseContainers(ctx context.Context, cli *cliconfig.Unp
 	}
 	return pool.Run()
 }
+
+// Restart containers without or without a timeout
+func (r *LocalRuntime) Restart(ctx context.Context, c *cliconfig.RestartValues) ([]string, map[string]error, error) {
+	var (
+		containers        []*libpod.Container
+		restartContainers []*libpod.Container
+		err               error
+	)
+	useTimeout := c.Flag("timeout").Changed || c.Flag("time").Changed
+	inputTimeout := c.Timeout
+
+	// Handle --latest
+	if c.Latest {
+		lastCtr, err := r.Runtime.GetLatestContainer()
+		if err != nil {
+			return nil, nil, errors.Wrapf(err, "unable to get latest container")
+		}
+		restartContainers = append(restartContainers, lastCtr)
+	} else if c.Running {
+		containers, err = r.GetRunningContainers()
+		if err != nil {
+			return nil, nil, err
+		}
+		restartContainers = append(restartContainers, containers...)
+	} else if c.All {
+		containers, err = r.Runtime.GetAllContainers()
+		if err != nil {
+			return nil, nil, err
+		}
+		restartContainers = append(restartContainers, containers...)
+	} else {
+		for _, id := range c.InputArgs {
+			ctr, err := r.Runtime.LookupContainer(id)
+			if err != nil {
+				return nil, nil, err
+			}
+			restartContainers = append(restartContainers, ctr)
+		}
+	}
+
+	maxWorkers := shared.DefaultPoolSize("restart")
+	if c.GlobalIsSet("max-workers") {
+		maxWorkers = c.GlobalFlags.MaxWorks
+	}
+
+	logrus.Debugf("Setting maximum workers to %d", maxWorkers)
+
+	// We now have a slice of all the containers to be restarted. Iterate them to
+	// create restart Funcs with a timeout as needed
+	pool := shared.NewPool("restart", maxWorkers, len(restartContainers))
+	for _, c := range restartContainers {
+		ctr := c
+		timeout := ctr.StopTimeout()
+		if useTimeout {
+			timeout = inputTimeout
+		}
+		pool.Add(shared.Job{
+			ID: ctr.ID(),
+			Fn: func() error {
+				err := ctr.RestartWithTimeout(ctx, timeout)
+				if err != nil {
+					logrus.Debugf("Failed to restart container %s: %s", ctr.ID(), err.Error())
+				}
+				return err
+			},
+		})
+	}
+	return pool.Run()
+}
diff --git a/pkg/adapter/containers_remote.go b/pkg/adapter/containers_remote.go
index cb61871bf..e8f221eaf 100644
--- a/pkg/adapter/containers_remote.go
+++ b/pkg/adapter/containers_remote.go
@@ -45,6 +45,12 @@ func (c *Container) ID() string {
 	return c.config.ID
 }
 
+// Restart a single container
+func (c *Container) Restart(timeout int64) error {
+	_, err := iopodman.RestartContainer().Call(c.Runtime.Conn, c.ID(), timeout)
+	return err
+}
+
 // Pause a container
 func (c *Container) Pause() error {
 	_, err := iopodman.PauseContainer().Call(c.Runtime.Conn, c.ID())
@@ -132,6 +138,23 @@ func (r *LocalRuntime) LookupContainer(idOrName string) (*Container, error) {
 	}, nil
 }
 
+// GetAllContainers returns all containers in a slice
+func (r *LocalRuntime) GetAllContainers() ([]*Container, error) {
+	var containers []*Container
+	ctrs, err := iopodman.GetContainersByContext().Call(r.Conn, true, false, []string{})
+	if err != nil {
+		return nil, err
+	}
+	for _, ctr := range ctrs {
+		container, err := r.LookupContainer(ctr)
+		if err != nil {
+			return nil, err
+		}
+		containers = append(containers, container)
+	}
+	return containers, nil
+}
+
 func (r *LocalRuntime) LookupContainersWithStatus(filters []string) ([]*Container, error) {
 	var containers []*Container
 	ctrs, err := iopodman.GetContainersByStatus().Call(r.Conn, filters)
@@ -753,3 +776,59 @@ func (r *LocalRuntime) UnpauseContainers(ctx context.Context, cli *cliconfig.Unp
 	}
 	return ok, failures, nil
 }
+
+// Restart restarts a container over varlink
+func (r *LocalRuntime) Restart(ctx context.Context, c *cliconfig.RestartValues) ([]string, map[string]error, error) {
+	var (
+		containers        []*Container
+		restartContainers []*Container
+		err               error
+		ok                = []string{}
+		failures          = map[string]error{}
+	)
+	useTimeout := c.Flag("timeout").Changed || c.Flag("time").Changed
+	inputTimeout := c.Timeout
+
+	if c.Latest {
+		lastCtr, err := r.GetLatestContainer()
+		if err != nil {
+			return nil, nil, errors.Wrapf(err, "unable to get latest container")
+		}
+		restartContainers = append(restartContainers, lastCtr)
+	} else if c.Running {
+		containers, err = r.LookupContainersWithStatus([]string{libpod.ContainerStateRunning.String()})
+		if err != nil {
+			return nil, nil, err
+		}
+		restartContainers = append(restartContainers, containers...)
+	} else if c.All {
+		containers, err = r.GetAllContainers()
+		if err != nil {
+			return nil, nil, err
+		}
+		restartContainers = append(restartContainers, containers...)
+	} else {
+		for _, id := range c.InputArgs {
+			ctr, err := r.LookupContainer(id)
+			if err != nil {
+				return nil, nil, err
+			}
+			restartContainers = append(restartContainers, ctr)
+		}
+	}
+
+	for _, c := range restartContainers {
+		c := c
+		timeout := c.config.StopTimeout
+		if useTimeout {
+			timeout = inputTimeout
+		}
+		err := c.Restart(int64(timeout))
+		if err != nil {
+			failures[c.ID()] = err
+		} else {
+			ok = append(ok, c.ID())
+		}
+	}
+	return ok, failures, nil
+}
-- 
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