migrations: add migrations for hugepages settings

Signed-off-by: Piyush Jena <jepiyush@amazon.com>

Author: piyush-jena

Release.toml

@@ -477,4 +477,5 @@ version = "1.64.0"
 ]
 "(1.63.0, 1.64.0)" = [
     "migrate_v1.64.0_kubernetes-container-runtime-endpoint.lz4",
+    "migrate_v1.64.0_hugepages-settings.lz4"
 ]

sources/Cargo.lock

@@ -66,6 +66,7 @@ members = [
     "settings-migrations/v1.63.0/image-verifier-plugins-settings",
     "settings-migrations/v1.63.0/nvidia-k8s-device-plugin-enabled",
     "settings-migrations/v1.64.0/kubernetes-container-runtime-endpoint",
+    "settings-migrations/v1.64.0/hugepages-settings",
 
     "settings-plugins/aws-dev",
     "settings-plugins/aws-ecs-2",

sources/Cargo.toml

@@ -0,0 +1,10 @@
+[package]
+name = "hugepages-settings"
+version = "0.1.0"
+license = "Apache-2.0 OR MIT"
+edition = "2021"
+publish = false
+exclude = ["README.md"]
+
+[dependencies]
+migration-helpers.workspace = true

sources/settings-migrations/v1.64.0/hugepages-settings/Cargo.toml

@@ -0,0 +1,22 @@
+use migration_helpers::common_migrations::AddPrefixesMigration;
+use migration_helpers::{migrate, Result};
+use std::process;
+
+/// We added new settings for hugepages related settings:
+/// - settings.kernel.hugepages.*
+fn run() -> Result<()> {
+    migrate(AddPrefixesMigration(vec![
+        "settings.kernel.hugepages",
+        "services.hugepages",
+    ]))
+}
+
+// Returning a Result from main makes it print a Debug representation of the error, but with Snafu
+// we have nice Display representations of the error, so we wrap "main" (run) and print any error.
+// https://github.com/shepmaster/snafu/issues/110
+fn main() {
+    if let Err(e) = run() {
+        eprintln!("{e}");
+        process::exit(1);
+    }
+}