sp-api: Move macro related re-exports to __private (#2446)

This moves the macro related re-exports to `__private` to make it more
obvious for downstream users that they are using an internal api.

---------

Co-authored-by: command-bot <>

substrate/client/rpc-spec-v2/src/archive/archive.rs

@@ -29,13 +29,13 @@ use jsonrpsee::core::{async_trait, RpcResult};
 use sc_client_api::{
 	Backend, BlockBackend, BlockchainEvents, CallExecutor, ExecutorProvider, StorageProvider,
 };
-use sp_api::{CallApiAt, CallContext, NumberFor};
+use sp_api::{CallApiAt, CallContext};
 use sp_blockchain::{
 	Backend as BlockChainBackend, Error as BlockChainError, HeaderBackend, HeaderMetadata,
 };
 use sp_core::Bytes;
 use sp_runtime::{
-	traits::{Block as BlockT, Header as HeaderT},
+	traits::{Block as BlockT, Header as HeaderT, NumberFor},
 	SaturatedConversion,
 };
 use std::{collections::HashSet, marker::PhantomData, sync::Arc};

substrate/client/rpc-spec-v2/src/chain_head/chain_head_storage.rs

@@ -22,8 +22,8 @@ use std::{collections::VecDeque, marker::PhantomData, sync::Arc};
 
 use sc_client_api::{Backend, ChildInfo, StorageKey, StorageProvider};
 use sc_utils::mpsc::TracingUnboundedSender;
-use sp_api::BlockT;
 use sp_core::storage::well_known_keys;
+use sp_runtime::traits::Block as BlockT;
 
 use crate::chain_head::event::OperationStorageItems;
 

substrate/client/rpc-spec-v2/src/chain_head/test_utils.rs

@@ -24,14 +24,15 @@ use sc_client_api::{
 	StorageData, StorageEventStream, StorageKey, StorageProvider,
 };
 use sc_utils::mpsc::{tracing_unbounded, TracingUnboundedSender};
-use sp_api::{CallApiAt, CallApiAtParams, NumberFor, RuntimeVersion};
+use sp_api::{CallApiAt, CallApiAtParams};
 use sp_blockchain::{BlockStatus, CachedHeaderMetadata, HeaderBackend, HeaderMetadata, Info};
 use sp_consensus::BlockOrigin;
 use sp_runtime::{
 	generic::SignedBlock,
-	traits::{Block as BlockT, Header as HeaderT},
+	traits::{Block as BlockT, Header as HeaderT, NumberFor},
 	Justifications,
 };
+use sp_version::RuntimeVersion;
 use std::sync::Arc;
 use substrate_test_runtime::{Block, Hash, Header};
 
@@ -235,7 +236,7 @@ impl<Block: BlockT, Client: CallApiAt<Block>> CallApiAt<Block> for ChainHeadMock
 	fn initialize_extensions(
 		&self,
 		at: <Block as BlockT>::Hash,
-		extensions: &mut sp_api::Extensions,
+		extensions: &mut sp_externalities::Extensions,
 	) -> Result<(), sp_api::ApiError> {
 		self.client.initialize_extensions(at, extensions)
 	}

substrate/client/rpc-spec-v2/src/chain_head/tests.rs

@@ -34,7 +34,6 @@ use jsonrpsee::{
 use sc_block_builder::BlockBuilderBuilder;
 use sc_client_api::ChildInfo;
 use sc_service::client::new_in_mem;
-use sp_api::BlockT;
 use sp_blockchain::HeaderBackend;
 use sp_consensus::BlockOrigin;
 use sp_core::{
@@ -42,6 +41,7 @@ use sp_core::{
 	testing::TaskExecutor,
 	Blake2Hasher, Hasher,
 };
+use sp_runtime::traits::Block as BlockT;
 use sp_version::RuntimeVersion;
 use std::{
 	collections::{HashMap, HashSet},