stats: add a interval parameter to cli and api stream mode

podman stats polled by default in a 1 sec period.
This can put quite some load on a machine if you run many containers.

The default value is now 5 seconds.
You can change this interval with a new, optional, --interval, -i cli flag.
The api request got also a interval query parameter for the same purpose.

Additionally a unused const was removed.
Api and cli will fail the request if a 0 or negative value is passed in.

Signed-off-by: Thomas Weber <towe75@googlemail.com>

2 files changed, 18 insertions, 1 deletions

diff --git a/pkg/bindings/containers/types.go b/pkg/bindings/containers/types.go
index 1058c7a48..28c644841 100644
--- a/pkg/bindings/containers/types.go
+++ b/pkg/bindings/containers/types.go
@@ -165,7 +165,8 @@ type StartOptions struct {
 //go:generate go run ../generator/generator.go StatsOptions
 // StatsOptions are optional options for getting stats on containers
 type StatsOptions struct {
-	Stream *bool
+	Stream   *bool
+	Interval *int
 }
 
 //go:generate go run ../generator/generator.go TopOptions
diff --git a/pkg/bindings/containers/types_stats_options.go b/pkg/bindings/containers/types_stats_options.go
index 8f6a03301..604004eb6 100644
--- a/pkg/bindings/containers/types_stats_options.go
+++ b/pkg/bindings/containers/types_stats_options.go
@@ -35,3 +35,19 @@ func (o *StatsOptions) GetStream() bool {
 	}
 	return *o.Stream
 }
+
+// WithInterval
+func (o *StatsOptions) WithInterval(value int) *StatsOptions {
+	v := &value
+	o.Interval = v
+	return o
+}
+
+// GetInterval
+func (o *StatsOptions) GetInterval() int {
+	var interval int
+	if o.Interval == nil {
+		return interval
+	}
+	return *o.Interval
+}