log: support --log-opt tag=

support a custom tag to add to each log for the container.

It is currently supported only by the journald backend.

Closes: https://github.com/containers/libpod/issues/3653

Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/libpod/container.go b/libpod/container.go
index edf72f4ee..a046dcafc 100644
--- a/libpod/container.go
+++ b/libpod/container.go
@@ -379,6 +379,8 @@ type ContainerConfig struct {
 	CgroupParent string `json:"cgroupParent"`
 	// LogPath log location
 	LogPath string `json:"logPath"`
+	// LogTag is the tag used for logging
+	LogTag string `json:"logTag"`
 	// LogDriver driver for logs
 	LogDriver string `json:"logDriver"`
 	// File containing the conmon PID
@@ -726,6 +728,11 @@ func (c *Container) LogPath() string {
 	return c.config.LogPath
 }
 
+// LogTag returns the tag to the container's log file
+func (c *Container) LogTag() string {
+	return c.config.LogTag
+}
+
 // RestartPolicy returns the container's restart policy.
 func (c *Container) RestartPolicy() string {
 	return c.config.RestartPolicy