Add podman stats --no-trunc option

This is for compatibility with Docker.

Partial fix for https://github.com/containers/podman/issues/14917

Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>

3 files changed, 17 insertions, 1 deletions

diff --git a/cmd/podman/containers/stats.go b/cmd/podman/containers/stats.go
index 0dd8ce80a..f29bbf34c 100644
--- a/cmd/podman/containers/stats.go
+++ b/cmd/podman/containers/stats.go
@@ -58,6 +58,7 @@ type statsOptionsCLI struct {
 
 var (
 	statsOptions statsOptionsCLI
+	notrunc      bool
 )
 
 func statFlags(cmd *cobra.Command) {
@@ -69,6 +70,7 @@ func statFlags(cmd *cobra.Command) {
 	flags.StringVar(&statsOptions.Format, formatFlagName, "", "Pretty-print container statistics to JSON or using a Go template")
 	_ = cmd.RegisterFlagCompletionFunc(formatFlagName, common.AutocompleteFormat(&containerStats{}))
 
+	flags.BoolVar(&notrunc, "no-trunc", false, "Do not truncate output")
 	flags.BoolVar(&statsOptions.NoReset, "no-reset", false, "Disable resetting the screen between intervals")
 	flags.BoolVar(&statsOptions.NoStream, "no-stream", false, "Disable streaming stats and only pull the first result, default setting is false")
 	intervalFlagName := "interval"
@@ -186,6 +188,9 @@ type containerStats struct {
 }
 
 func (s *containerStats) ID() string {
+	if notrunc {
+		return s.ContainerID
+	}
 	return s.ContainerID[0:12]
 }
 
diff --git a/docs/source/markdown/podman-stats.1.md b/docs/source/markdown/podman-stats.1.md
index d87da6a60..8d07be1a0 100644
--- a/docs/source/markdown/podman-stats.1.md
+++ b/docs/source/markdown/podman-stats.1.md
@@ -61,6 +61,10 @@ Do not clear the terminal/screen in between reporting intervals
 
 Disable streaming stats and only pull the first result, default setting is false
 
+#### **--no-trunc**
+
+Do not truncate output
+
 ## EXAMPLE
 
 ```
@@ -77,6 +81,12 @@ a9f807ffaacd   frosty_hodgkin   --      3.092MB / 16.7GB    0.02%   -- / --   --
 ```
 
 ```
+$ podman stats --no-trunc 3667 --format 'table {{ .ID }} {{ .MemUsage }}'
+ID                                                                MEM USAGE / LIMIT
+3667c6aacb06aac2eaffce914c01736420023d56ef9b0f4cfe58b6d6a78b7503  49.15kB / 67.17GB
+```
+
+```
 # podman stats --no-stream --format=json a9f80
 [
     {
diff --git a/test/e2e/stats_test.go b/test/e2e/stats_test.go
index 3000a819f..981c00316 100644
--- a/test/e2e/stats_test.go
+++ b/test/e2e/stats_test.go
@@ -79,9 +79,10 @@ var _ = Describe("Podman stats", func() {
 		session := podmanTest.RunTopContainer("")
 		session.WaitWithDefaultTimeout()
 		Expect(session).Should(Exit(0))
-		session = podmanTest.Podman([]string{"stats", "--all", "--no-stream", "--format", "\"{{.ID}}\""})
+		session = podmanTest.Podman([]string{"stats", "--all", "--no-trunc", "--no-stream", "--format", "\"{{.ID}}\""})
 		session.WaitWithDefaultTimeout()
 		Expect(session).Should(Exit(0))
+		Expect(len(session.OutputToStringArray()[0])).Should(BeEquivalentTo(66))
 	})
 
 	It("podman stats with GO template", func() {