restructure polkadot-node-jaeger (#2642)

polkadot/node/jaeger/src/errors.rs

@@ -0,0 +1,28 @@
+// Copyright 2020 Parity Technologies (UK) Ltd.
+// This file is part of Polkadot.
+
+// Polkadot 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.
+
+// Polkadot 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 Polkadot.  If not, see <http://www.gnu.org/licenses/>.
+
+//! Polkadot Jaeger error definitions.
+
+/// A description of an error during jaeger initialization.
+#[derive(Debug, thiserror::Error)]
+#[allow(missing_docs)]
+pub enum JaegerError {
+	#[error("Already launched the collector thread")]
+	AlreadyLaunched,
+
+	#[error("Missing jaeger configuration")]
+	MissingConfiguration,
+}