partial implementation of provider for client types

ethcore/src/client/client.rs

@@ -52,7 +52,7 @@ use blockchain::{BlockChain, BlockProvider, TreeRoute, ImportRoute};
 use client::{
 	BlockID, TransactionID, UncleID, TraceId, ClientConfig, BlockChainClient,
 	MiningBlockChainClient, TraceFilter, CallAnalytics, BlockImportError, Mode,
-	ChainNotify,
+	ChainNotify, PruningInfo,
 };
 use client::Error as ClientError;
 use env_info::EnvInfo;
@@ -262,7 +262,7 @@ impl Client {
 		}
 	}
 
-	/// Register an action to be done if a mode change happens. 
+	/// Register an action to be done if a mode change happens.
 	pub fn on_mode_change<F>(&self, f: F) where F: 'static + FnMut(&Mode) + Send {
 		*self.on_mode_change.lock() = Some(Box::new(f));
 	}
@@ -890,7 +890,7 @@ impl BlockChainClient for Client {
 					trace!(target: "mode", "Making callback...");
 					f(&*mode)
 				},
-				_ => {} 
+				_ => {}
 			}
 		}
 		match new_mode {
@@ -1226,6 +1226,13 @@ impl BlockChainClient for Client {
 		self.uncle(id)
 			.map(|header| self.engine.extra_info(&decode(&header)))
 	}
+
+	fn pruning_info(&self) -> PruningInfo {
+		PruningInfo {
+			earliest_chain: self.chain.read().first_block().unwrap_or(1),
+			earliest_state: self.state_db.lock().journal_db().earliest_era().unwrap_or(0),
+		}
+	}
 }
 
 impl MiningBlockChainClient for Client {

ethcore/src/client/mod.rs

@@ -25,18 +25,21 @@ mod client;
 pub use self::client::*;
 pub use self::config::{Mode, ClientConfig, DatabaseCompactionProfile, BlockChainConfig, VMType};
 pub use self::error::Error;
-pub use types::ids::*;
 pub use self::test_client::{TestBlockChainClient, EachBlockWith};
+pub use self::chain_notify::ChainNotify;
+pub use self::traits::{BlockChainClient, MiningBlockChainClient};
+
+pub use types::ids::*;
 pub use types::trace_filter::Filter as TraceFilter;
+pub use types::pruning_info::PruningInfo;
+pub use types::call_analytics::CallAnalytics;
+
 pub use executive::{Executed, Executive, TransactOptions};
 pub use env_info::{LastHashes, EnvInfo};
-pub use self::chain_notify::ChainNotify;
 
-pub use types::call_analytics::CallAnalytics;
 pub use block_import_error::BlockImportError;
 pub use transaction_import::TransactionImportResult;
 pub use transaction_import::TransactionImportError;
-pub use self::traits::{BlockChainClient, MiningBlockChainClient};
 pub use verification::VerifierType;
 
 /// IPC interfaces

ethcore/src/client/test_client.rs

@@ -38,6 +38,7 @@ use evm::{Factory as EvmFactory, VMType, Schedule};
 use miner::{Miner, MinerService, TransactionImportResult};
 use spec::Spec;
 use types::mode::Mode;
+use types::pruning_info::PruningInfo;
 use views::BlockView;
 
 use verification::queue::QueueInfo;
@@ -650,4 +651,11 @@ impl BlockChainClient for TestBlockChainClient {
 	fn mode(&self) -> Mode { Mode::Active }
 
 	fn set_mode(&self, _: Mode) { unimplemented!(); }
+
+	fn pruning_info(&self) -> PruningInfo {
+		PruningInfo {
+			earliest_chain: 1,
+			earlest_state: 1,
+		}
+	}
 }

ethcore/src/client/traits.rs

@@ -39,6 +39,7 @@ use types::call_analytics::CallAnalytics;
 use types::blockchain_info::BlockChainInfo;
 use types::block_status::BlockStatus;
 use types::mode::Mode;
+use types::pruning_info::PruningInfo;
 
 #[ipc(client_ident="RemoteClient")]
 /// Blockchain database client. Owns and manages a blockchain and a block queue.
@@ -241,6 +242,9 @@ pub trait BlockChainClient : Sync + Send {
 
 	/// Returns engine-related extra info for `UncleID`.
 	fn uncle_extra_info(&self, id: UncleID) -> Option<BTreeMap<String, String>>;
+
+	/// Returns information about pruning/data availability.
+	fn pruning_info(&self) -> PruningInfo;
 }
 
 /// Extended client interface used for mining