Ensure key-value metadata key is exposed for usage

Signed-off-by: Ryan Levick <[email protected]>

Author: rylev

crates/factor-key-value/src/host.rs

@@ -1,14 +1,11 @@
 use crate::util::EmptyStoreManager;
 use anyhow::{Context, Result};
 use spin_core::{async_trait, wasmtime::component::Resource};
-use spin_locked_app::MetadataKey;
 use spin_world::v2::key_value;
 use std::{collections::HashSet, sync::Arc};
 use table::Table;
 use tracing::{instrument, Level};
 
-pub const KEY_VALUE_STORES_KEY: MetadataKey<Vec<String>> = MetadataKey::new("key_value_stores");
-
 const DEFAULT_STORE_TABLE_CAPACITY: u32 = 256;
 
 pub use key_value::Error;

crates/factor-key-value/src/lib.rs

@@ -8,12 +8,14 @@ use std::{
 };
 
 use anyhow::ensure;
-use host::KEY_VALUE_STORES_KEY;
 use spin_factors::{
     ConfigureAppContext, Factor, FactorInstanceBuilder, InitContext, PrepareContext, RuntimeFactors,
 };
+use spin_locked_app::MetadataKey;
 use util::DefaultManagerGetter;
 
+/// Metadata key for key-value stores.
+pub const KEY_VALUE_STORES_KEY: MetadataKey<Vec<String>> = MetadataKey::new("key_value_stores");
 pub use host::{log_error, Error, KeyValueDispatch, Store, StoreManager};
 pub use runtime_config::RuntimeConfig;
 pub use util::{CachingStoreManager, DelegatingStoreManager};

crates/factor-sqlite/src/lib.rs

@@ -135,6 +135,7 @@ fn ensure_allowed_databases_are_configured(
     Ok(())
 }
 
+/// Metadata key for a list of allowed databases for a component.
 pub const ALLOWED_DATABASES_KEY: MetadataKey<Vec<String>> = MetadataKey::new("databases");
 
 /// Resolves a label to a default connection creator.