From cf7f6de70b6ad274c03d405e766ee290c4e28ddb Mon Sep 17 00:00:00 2001
From: Matthias Seitz <matthias.seitz@outlook.de>
Date: Thu, 12 Sep 2024 09:51:38 +0200
Subject: [PATCH] scaffold

---
 crates/storage/provider/src/providers/mod.rs  |  1 +
 .../providers/typed_blockchain_provider.rs    | 79 +++++++++++++++++++
 2 files changed, 80 insertions(+)
 create mode 100644 crates/storage/provider/src/providers/typed_blockchain_provider.rs

diff --git a/crates/storage/provider/src/providers/mod.rs b/crates/storage/provider/src/providers/mod.rs
index 652d275f3a..3bbbde30c6 100644
--- a/crates/storage/provider/src/providers/mod.rs
+++ b/crates/storage/provider/src/providers/mod.rs
@@ -59,6 +59,7 @@ pub use consistent_view::{ConsistentDbView, ConsistentViewError};
 
 mod blockchain_provider;
 pub use blockchain_provider::BlockchainProvider2;
+mod typed_blockchain_provider;
 
 /// Helper trait keeping common requirements of providers for [`NodeTypesWithDB`].
 pub trait ProviderNodeTypes: NodeTypesWithDB<ChainSpec = ChainSpec> {}
diff --git a/crates/storage/provider/src/providers/typed_blockchain_provider.rs b/crates/storage/provider/src/providers/typed_blockchain_provider.rs
new file mode 100644
index 0000000000..c5b1eac3cb
--- /dev/null
+++ b/crates/storage/provider/src/providers/typed_blockchain_provider.rs
@@ -0,0 +1,79 @@
+use crate::{providers::StaticFileProvider, DatabaseProvider, DatabaseProviderRO};
+use reth_chain_state::CanonicalInMemoryState;
+use reth_db_api::{transaction::DbTx, Database};
+use reth_node_types::NodeTypes;
+use reth_primitives::{Block, BlockHashOrNumber};
+use reth_prune_types::PruneModes;
+use reth_storage_errors::provider::ProviderResult;
+
+trait NodeStorage: Clone {
+    type Node: NodeTypes;
+
+    /// Reads block
+    fn read_block<TX: DbTx>(
+        &self,
+        id: BlockHashOrNumber,
+        provider: DatabaseProvider<TX>,
+    ) -> ProviderResult<Option<Block>>;
+}
+
+/// A common provider that fetches data from a database or static file.
+///
+/// This provider implements most provider or provider factory traits.
+///
+/// TODO this acts a type that can be used to read and write data from storage, it provides access
+/// to the database and static file provider. This manages `DatabaseProvider` and passes this to the
+/// storage to read from and write to.
+pub struct ProviderFactory2<DB, S> {
+    /// Database
+    db: DB,
+    /// Static File Provider
+    static_file_provider: StaticFileProvider,
+    /// Optional pruning configuration
+    prune_modes: PruneModes,
+    /// How to read,write certain types of data
+    storage: S,
+}
+
+impl<DB, S> ProviderFactory2<DB, S>
+where
+    DB: Database,
+{
+    pub fn provider(&self) -> ProviderResult<DatabaseProviderRO<DB>> {
+        Ok(DatabaseProvider::new(
+            self.db.tx()?,
+            // TODO get rid of this: https://github.com/paradigmxyz/reth/issues/10854
+            reth_chainspec::DEV.clone(),
+            self.static_file_provider.clone(),
+            self.prune_modes.clone(),
+        ))
+    }
+}
+
+impl<DB, S> ProviderFactory2<DB, S>
+where
+    DB: Database,
+    S: NodeStorage,
+{
+    fn block(&self, id: BlockHashOrNumber) -> ProviderResult<Option<Block>> {
+        let provider = self.provider()?;
+        let block = self.storage.read_block(id, provider)?;
+        Ok(block)
+    }
+}
+
+/// The main type for interacting with the blockchain.
+///
+/// This type serves as the main entry point for interacting with the blockchain and provides data
+/// from database storage and from the blockchain tree (pending state etc.) It is a simple wrapper
+/// type that holds an instance of the database and the blockchain tree.
+#[derive(Debug, Clone)]
+pub struct BlockchainProvider3<S> {
+    /// Disk storage support for the blockchain.
+    storage: S, // this will ProviderFactory
+    /// Tracks the chain info wrt forkchoice updates and in memory canonical
+    /// state.
+    pub(super) canonical_in_memory_state: CanonicalInMemoryState,
+}
+
+// TODO implement all traits that storage also supports