Files
podman/libpod/healthcheck_linux.go
Valentin Rothberg 8489dc4345 move go module to v2
With the advent of Podman 2.0.0 we crossed the magical barrier of go
modules.  While we were able to continue importing all packages inside
of the project, the project could not be vendored anymore from the
outside.

Move the go module to new major version and change all imports to
`github.com/containers/libpod/v2`.  The renaming of the imports
was done via `gomove` [1].

[1] https://github.com/KSubedi/gomove

Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
2020-07-06 15:50:12 +02:00

80 lines
2.2 KiB
Go

package libpod
import (
"fmt"
"os"
"os/exec"
"strings"
"github.com/containers/libpod/v2/pkg/rootless"
"github.com/containers/libpod/v2/pkg/systemd"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
)
// createTimer systemd timers for healthchecks of a container
func (c *Container) createTimer() error {
if c.disableHealthCheckSystemd() {
return nil
}
podman, err := os.Executable()
if err != nil {
return errors.Wrapf(err, "failed to get path for podman for a health check timer")
}
var cmd = []string{}
if rootless.IsRootless() {
cmd = append(cmd, "--user")
}
cmd = append(cmd, "--unit", c.ID(), fmt.Sprintf("--on-unit-inactive=%s", c.HealthCheckConfig().Interval.String()), "--timer-property=AccuracySec=1s", podman, "healthcheck", "run", c.ID())
conn, err := systemd.ConnectToDBUS()
if err != nil {
return errors.Wrapf(err, "unable to get systemd connection to add healthchecks")
}
conn.Close()
logrus.Debugf("creating systemd-transient files: %s %s", "systemd-run", cmd)
systemdRun := exec.Command("systemd-run", cmd...)
_, err = systemdRun.CombinedOutput()
if err != nil {
return err
}
return nil
}
// startTimer starts a systemd timer for the healthchecks
func (c *Container) startTimer() error {
if c.disableHealthCheckSystemd() {
return nil
}
conn, err := systemd.ConnectToDBUS()
if err != nil {
return errors.Wrapf(err, "unable to get systemd connection to start healthchecks")
}
defer conn.Close()
_, err = conn.StartUnit(fmt.Sprintf("%s.service", c.ID()), "fail", nil)
return err
}
// removeTimer removes the systemd timer and unit files
// for the container
func (c *Container) removeTimer() error {
if c.disableHealthCheckSystemd() {
return nil
}
conn, err := systemd.ConnectToDBUS()
if err != nil {
return errors.Wrapf(err, "unable to get systemd connection to remove healthchecks")
}
defer conn.Close()
timerFile := fmt.Sprintf("%s.timer", c.ID())
_, err = conn.StopUnit(timerFile, "fail", nil)
// We want to ignore errors where the timer unit has already been removed. The error
// return is generic so we have to check against the string in the error
if err != nil && strings.HasSuffix(err.Error(), ".timer not loaded.") {
return nil
}
return err
}