feat: add nvidia shared GPU settings to k8s model

Signed-off-by: Monirul Islam <mamun.sust@gmail.com>

Author: monirul

bottlerocket-settings-models/modeled-types/src/kubernetes.rs

@@ -14,6 +14,7 @@ use std::convert::TryFrom;
 use std::fmt::{self, Display, Formatter};
 use std::net::IpAddr;
 
+use crate::PositiveInteger;
 use crate::SingleLineString;
 
 // Declare constant values usable by any type
@@ -1455,6 +1456,8 @@ pub struct NvidiaDevicePluginSettings {
     pass_device_specs: bool,
     device_id_strategy: NvidiaDeviceIdStrategy,
     device_list_strategy: NvidiaDeviceListStrategy,
+    max_sharing_per_gpu: PositiveInteger,
+    rename_shared_gpu: bool,
 }
 
 #[derive(Debug, Clone, Eq, PartialEq, Hash, Serialize, Deserialize)]
@@ -1477,7 +1480,7 @@ mod tests {
 
     #[test]
     fn test_serde_k8s_device_plugins() {
-        let test_json = r#"{"nvidia":{"pass-device-specs":true,"device-id-strategy":"index","device-list-strategy":"volume-mounts"}}"#;
+        let test_json = r#"{"nvidia":{"pass-device-specs":true,"device-id-strategy":"index","device-list-strategy":"volume-mounts","max-sharing-per-gpu":10,"rename-shared-gpu":true}}"#;
 
         let device_plugins: K8sDevicePluginsSettings = serde_json::from_str(test_json).unwrap();
         assert_eq!(
@@ -1487,6 +1490,8 @@ mod tests {
                     pass_device_specs: Some(true),
                     device_id_strategy: Some(NvidiaDeviceIdStrategy::Index),
                     device_list_strategy: Some(NvidiaDeviceListStrategy::VolumeMounts),
+                    max_sharing_per_gpu: Some(PositiveInteger { inner: 10 }),
+                    rename_shared_gpu: Some(true),
                 }),
             }
         );
@@ -1497,7 +1502,7 @@ mod tests {
 
     #[test]
     fn test_serde_nvidia_device_plugins() {
-        let test_json = r#"{"pass-device-specs":false,"device-id-strategy":"uuid","device-list-strategy":"envvar"}"#;
+        let test_json = r#"{"pass-device-specs":false,"device-id-strategy":"uuid","device-list-strategy":"envvar","max-sharing-per-gpu":10,"rename-shared-gpu":false}"#;
         let nvidia_device_plugins: NvidiaDevicePluginSettings =
             serde_json::from_str(test_json).unwrap();
         assert_eq!(
@@ -1506,10 +1511,18 @@ mod tests {
                 pass_device_specs: Some(false),
                 device_id_strategy: Some(NvidiaDeviceIdStrategy::Uuid),
                 device_list_strategy: Some(NvidiaDeviceListStrategy::Envvar),
+                max_sharing_per_gpu: Some(PositiveInteger { inner: 10 }),
+                rename_shared_gpu: Some(false),
             }
         );
 
         let results = serde_json::to_string(&nvidia_device_plugins).unwrap();
         assert_eq!(results, test_json);
     }
+    #[test]
+    fn test_invalid_max_sharing_per_gpu() {
+        let test_json = r#"{"pass-device-specs":false,"device-id-strategy":"uuid","device-list-strategy":"envvar","max-sharing-per-gpu":0,"rename-shared-gpu":false}"#;
+        let result: Result<NvidiaDevicePluginSettings, _> = serde_json::from_str(test_json);
+        assert!(result.is_err(), "The JSON should not be parsed successfully as it contains an invalid value for 'max-sharing-per-gpu'.");
+    }
 }

bottlerocket-settings-models/modeled-types/src/shared.rs

@@ -1181,6 +1181,47 @@ mod test_positive_integer {
 
 // =^..^=   =^..^=   =^..^=   =^..^=   =^..^=   =^..^=   =^..^=   =^..^=   =^..^=
 
+/// Input value that needs to be a positive integer, but should not be greater
+/// than an i32::MAX.
+#[derive(Clone, Debug, PartialEq, Scalar)]
+pub struct PositiveInteger {
+    pub inner: i32,
+}
+
+impl Validate for PositiveInteger {
+    fn validate<I: Into<i32>>(input: I) -> Result<PositiveInteger, ValidationError> {
+        let inner: i32 = input.into();
+        if inner < 1 {
+            Err(ValidationError::new(
+                "number must be great than or equal to 1",
+            ))
+        } else {
+            Ok(Self { inner })
+        }
+    }
+}
+
+#[cfg(test)]
+mod test_nonzero_integer {
+    use super::PositiveInteger;
+    use std::convert::TryFrom;
+
+    #[test]
+    fn valid_positive_integer() {
+        assert!(PositiveInteger::try_from(1).is_ok());
+        assert!(PositiveInteger::try_from(i32::MAX).is_ok());
+        assert!(PositiveInteger::try_from(42).is_ok());
+    }
+
+    #[test]
+    fn invalid_positive_integer() {
+        assert!(PositiveInteger::try_from(i32::MIN).is_err());
+        assert!(PositiveInteger::try_from(-1).is_err());
+        assert!(PositiveInteger::try_from(0).is_err());
+    }
+}
+// =^..^=   =^..^=   =^..^=   =^..^=   =^..^=   =^..^=   =^..^=   =^..^=   =^..^=
+
 /// KernelCpuSetValue represents a string that contains a valid Kernel CpuSet Value from
 /// here: https://man7.org/linux/man-pages/man7/cpuset.7.html#FORMATS. This matches the
 /// logic from https://github.com/kubernetes/utils/blob/d93618cff8a22d3aea7bf78d9d528fd859720c2d/cpuset/cpuset.go#L203

bottlerocket-settings-models/settings-models/src/kubernetes/mod.rs

@@ -24,6 +24,12 @@ use bottlerocket_modeled_types::{
     TopologyManagerScope, Url, ValidBase64, ValidLinuxHostname,
 };
 
+// Feature flags
+#[cfg(feature = "nvidia-device-plugin")]
+pub const NVIDIA_DEVICE_PLUGIN_FEATURE_ENABLED: bool = true;
+#[cfg(not(feature = "nvidia-device-plugin"))]
+pub const NVIDIA_DEVICE_PLUGIN_FEATURE_ENABLED: bool = false;
+
 // Kubernetes static pod manifest settings
 #[model]
 pub struct StaticPod {

bottlerocket-settings-models/settings-models/src/lib.rs

@@ -15,7 +15,7 @@ settings structures that helpfully validate inputs on deserialize.
 */
 
 mod boot;
-mod kubernetes;
+pub mod kubernetes;
 
 // Expose types for creating new settings structs
 pub use bottlerocket_model_derive as model_derive;