From 134f48cdfb211c971fc9db8edf7d150bb8e79ded Mon Sep 17 00:00:00 2001
From: Nikolay Volf <nikvolf@gmail.com>
Date: Tue, 31 May 2016 13:05:43 +0200
Subject: [PATCH] lib import

---
 db/src/lib.rs.in | 64 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 64 insertions(+)

diff --git a/db/src/lib.rs.in b/db/src/lib.rs.in
index 694b4e3e1..4fa43b977 100644
--- a/db/src/lib.rs.in
+++ b/db/src/lib.rs.in
@@ -19,7 +19,71 @@ extern crate rocksdb;
 extern crate ethcore_devtools as devtools;
 extern crate semver;
 extern crate ethcore_ipc_nano as nanoipc;
+extern crate nanomsg;
+extern crate crossbeam;
 extern crate ethcore_util as util;
 
 pub mod database;
 pub mod traits;
+
+pub use traits::{DatabaseService, DBTransaction, Error};
+pub use database::{Database, DatabaseClient, DatabaseIterator};
+
+use std::sync::Arc;
+use std::sync::atomic::*;
+use std::path::PathBuf;
+
+pub type DatabaseNanoClient = DatabaseClient<::nanomsg::Socket>;
+pub type DatabaseConnection = nanoipc::GuardedSocket<DatabaseNanoClient>;
+
+#[derive(Debug)]
+pub enum ServiceError {
+	Io(std::io::Error),
+	Socket(nanoipc::SocketError),
+}
+
+impl std::convert::From<std::io::Error> for ServiceError {
+	fn from(io_error: std::io::Error) -> ServiceError { ServiceError::Io(io_error) }
+}
+
+impl std::convert::From<nanoipc::SocketError> for ServiceError {
+	fn from(socket_error: nanoipc::SocketError) -> ServiceError { ServiceError::Socket(socket_error) }
+}
+
+pub fn blocks_service_url(db_path: &str) -> Result<String, std::io::Error> {
+	let mut path = PathBuf::from(db_path);
+	try!(::std::fs::create_dir_all(db_path));
+	path.push("blocks.ipc");
+	Ok(format!("ipc://{}", path.to_str().unwrap()))
+}
+
+pub fn extras_service_url(db_path: &str) -> Result<String, ::std::io::Error> {
+	let mut path = PathBuf::from(db_path);
+	try!(::std::fs::create_dir_all(db_path));
+	path.push("extras.ipc");
+	Ok(format!("ipc://{}", path.to_str().unwrap()))
+}
+
+pub fn blocks_client(db_path: &str) -> Result<DatabaseConnection, ServiceError> {
+	let url = try!(blocks_service_url(db_path));
+	let client = try!(nanoipc::init_client::<DatabaseClient<_>>(&url));
+	Ok(client)
+}
+
+pub fn extras_client(db_path: &str) -> Result<DatabaseConnection, ServiceError> {
+	let url = try!(extras_service_url(db_path));
+	let client = try!(nanoipc::init_client::<DatabaseClient<_>>(&url));
+	Ok(client)
+}
+
+// for tests
+pub fn run_worker(scope: &crossbeam::Scope, stop: Arc<AtomicBool>, socket_path: &str) {
+	let socket_path = socket_path.to_owned();
+	scope.spawn(move || {
+		let mut worker = nanoipc::Worker::new(&Arc::new(Database::new()));
+		worker.add_reqrep(&socket_path).unwrap();
+		while !stop.load(Ordering::Relaxed) {
+			worker.poll();
+		}
+	});
+}