migrations: remove all the weak setting on downgrade

We need this migration that will delete all the weak settings
and setting-generators.

Release.toml

@@ -380,6 +380,7 @@ version = "1.29.0"
     "migrate_v1.28.0_public-control-container-v0-7-18.lz4",
 ]
 "(1.28.0, 1.29.0)" = [
+    "migrate_v1.29.0_remove_weak_settings_migration.lz4",
     "migrate_v1.29.0_update-settings-generator-admin.lz4",
     "migrate_v1.29.0_update-settings-generator-control.lz4",
     "migrate_v1.29.0_change-public-admin-container-to-set-gen.lz4",

sources/Cargo.toml

@@ -71,6 +71,7 @@ members = [
     "settings-migrations/v1.28.0/public-admin-container-v0-11-14",
     "settings-migrations/v1.28.0/aws-control-container-v0-7-18",
     "settings-migrations/v1.28.0/public-control-container-v0-7-18",
+    "settings-migrations/v1.29.0/remove-weak-settings-migration",
     "settings-migrations/v1.29.0/update-settings-generator-admin",
     "settings-migrations/v1.29.0/update-settings-generator-control",
     "settings-migrations/v1.29.0/change-public-admin-container-to-set-gen",

sources/settings-migrations/v1.29.0/remove-weak-settings-migration/Cargo.toml

@@ -0,0 +1,15 @@
+[package]
+name = "remove-weak-settings-migration"
+version = "0.1.0"
+authors = ["Shikha Vyaghra <[email protected]>"]
+license = "Apache-2.0 OR MIT"
+edition = "2021"
+publish = false
+# Don't rebuild crate just because of changes to README.
+exclude = ["README.md"]
+
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+migration-helpers.workspace = true

sources/settings-migrations/v1.29.0/remove-weak-settings-migration/src/main.rs

@@ -0,0 +1,18 @@
+use migration_helpers::common_migrations::RemoveWeakSettingsMigration;
+use migration_helpers::{migrate, Result};
+use std::process;
+
+// Remove the weak settings on downgrade
+fn run() -> Result<()> {
+    migrate(RemoveWeakSettingsMigration)
+}
+
+// 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);
+    }
+}