migrations: add add-shibaken migration

Adds a new migration for shibaken setting-generator

Release.toml

@@ -18,13 +18,13 @@ version = "1.0.5"
     "migrate_v1.0.5_add-user-data.lz4",
     "migrate_v1.0.5_add-network-settings.lz4",
     "migrate_v1.0.5_add-proxy-restart.lz4",
-    "migrate_v1.0.5_add-proxy-services.lz4"
+    "migrate_v1.0.5_add-proxy-services.lz4",
 ]
 "(1.0.5, 1.0.6)" = [
     "migrate_v1.0.6_metricdog-init.lz4",
     "migrate_v1.0.6_add-static-pods.lz4",
     "migrate_v1.0.6_kubelet-standalone-tls-settings.lz4",
     "migrate_v1.0.6_kubelet-standalone-tls-services.lz4",
-    "migrate_v1.0.6_control-container-v0-4-2.lz4"
+    "migrate_v1.0.6_control-container-v0-4-2.lz4",
+    "migrate_v1.0.6_add-shibaken.lz4",
 ]
-

sources/Cargo.toml

@@ -44,6 +44,7 @@ members = [
     "api/migration/migrations/v1.0.6/kubelet-standalone-tls-settings",
     "api/migration/migrations/v1.0.6/kubelet-standalone-tls-services",
     "api/migration/migrations/v1.0.6/control-container-v0-4-2",
+    "api/migration/migrations/v1.0.6/add-shibaken",
 
     "bottlerocket-release",
 

sources/api/migration/migrations/v1.0.6/add-shibaken/Cargo.toml

@@ -0,0 +1,12 @@
+[package]
+name = "add-shibaken"
+version = "0.1.0"
+authors = ["Patrick J.P. Culp <jpculp@amazon.com>"]
+license = "Apache-2.0 OR MIT"
+edition = "2018"
+publish = false
+# Don't rebuild crate just because of changes to README.
+exclude = ["README.md"]
+
+[dependencies]
+migration-helpers = { path = "../../../migration-helpers" }

sources/api/migration/migrations/v1.0.6/add-shibaken/src/main.rs

@@ -0,0 +1,23 @@
+#![deny(rust_2018_idioms)]
+
+use migration_helpers::common_migrations::{AddMetadataMigration, SettingMetadata};
+use migration_helpers::{migrate, Result};
+use std::process;
+
+/// We added a new setting metadata, `host-containers.admin.user-data.setting-generator`
+fn run() -> Result<()> {
+    migrate(AddMetadataMigration(&[SettingMetadata {
+        metadata: &["setting-generator"],
+        setting: "settings.host-containers.admin.user-data",
+    }]))
+}
+
+// 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);
+    }
+}