Block production integration benchmark (#6468)

* proposer benchmark

* update cargo.lock

substrate/bin/node/bench/src/common.rs

@@ -0,0 +1,48 @@
+
+// This file is part of Substrate.
+
+// Copyright (C) 2020 Parity Technologies (UK) Ltd.
+// SPDX-License-Identifier: GPL-3.0-or-later WITH Classpath-exception-2.0
+
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see <https://www.gnu.org/licenses/>.
+
+#[derive(Clone, Copy, Debug, derive_more::Display)]
+pub enum SizeType {
+	#[display(fmt = "empty")]
+	Empty,
+	#[display(fmt = "small")]
+	Small,
+	#[display(fmt = "medium")]
+	Medium,
+	#[display(fmt = "large")]
+	Large,
+	#[display(fmt = "full")]
+	Full,
+	#[display(fmt = "custom")]
+	Custom(usize),
+}
+
+impl SizeType {
+	pub fn transactions(&self) -> Option<usize> {
+		match self {
+			SizeType::Empty => Some(0),
+			SizeType::Small => Some(10),
+			SizeType::Medium => Some(100),
+			SizeType::Large => Some(500),
+			SizeType::Full => None,
+			// Custom SizeType will use the `--transactions` input parameter
+			SizeType::Custom(val) => Some(*val),
+		}
+	}
+}