Container candidates in dev service (#747)

* wip

* wip

* add flume for messages

* wip

* wip

* test related to validator rewards

* toml·

* clippy

* linting

* more lint

* start cleaning

* work

* pr comm

* remove logs

solo-chains/node/tanssi-relay-service/Cargo.toml

@@ -47,6 +47,7 @@ sp-api = { workspace = true }
 sp-authority-discovery = { workspace = true }
 sp-block-builder = { workspace = true }
 sp-blockchain = { workspace = true }
+sp-consensus-aura = { workspace = true }
 sp-consensus-babe = { workspace = true }
 sp-core = { workspace = true, features = [ "std" ] }
 sp-inherents = { workspace = true, features = [ "std" ] }
@@ -81,6 +82,7 @@ async-io = { workspace = true }
 async-trait = { workspace = true }
 bitvec = { workspace = true, optional = true }
 codec = { workspace = true }
+flume = { workspace = true }
 futures = { workspace = true }
 gum = { workspace = true }
 hex-literal = { workspace = true }

solo-chains/node/tanssi-relay-service/src/dev_rpcs.rs

@@ -0,0 +1,81 @@
+// Copyright (C) Moondance Labs Ltd.
+// This file is part of Tanssi.
+
+// Tanssi 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.
+
+// Tanssi 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 Tanssi.  If not, see <http://www.gnu.org/licenses/>
+
+//! Development Polkadot service. Adapted from `polkadot_service` crate
+//! and removed un-necessary components which are not required in dev node.
+
+use codec::Encode;
+use jsonrpsee::{
+    core::RpcResult,
+    proc_macros::rpc,
+    types::{
+        error::{INTERNAL_ERROR_CODE, INTERNAL_ERROR_MSG},
+        ErrorObjectOwned,
+    },
+};
+
+/// This RPC interface is used to provide methods in dev mode only
+#[rpc(server)]
+#[jsonrpsee::core::async_trait]
+pub trait DevApi {
+    /// Indicate the mock parachain candidate insertion to be active
+    #[method(name = "mock_enableParaInherentCandidate")]
+    async fn enable_para_inherent_candidate(&self) -> RpcResult<()>;
+
+    /// Indicate the mock parachain candidate insertion to be disabled
+    #[method(name = "mock_disableParaInherentCandidate")]
+    async fn disable_para_inherent_candidate(&self) -> RpcResult<()>;
+}
+
+pub struct DevRpc {
+    pub mock_para_inherent_channel: flume::Sender<Vec<u8>>,
+}
+
+#[jsonrpsee::core::async_trait]
+impl DevApiServer for DevRpc {
+    async fn enable_para_inherent_candidate(&self) -> RpcResult<()> {
+        let mock_para_inherent_channel = self.mock_para_inherent_channel.clone();
+        // Push the message to the shared channel where it will be queued up
+        // to be injected in to an upcoming block.
+        mock_para_inherent_channel
+            .send_async(true.encode())
+            .await
+            .map_err(|err| internal_err(err.to_string()))?;
+
+        Ok(())
+    }
+
+    async fn disable_para_inherent_candidate(&self) -> RpcResult<()> {
+        let mock_para_inherent_channel = self.mock_para_inherent_channel.clone();
+        // Push the message to the shared channel where it will be queued up
+        // to be injected in to an upcoming block.
+        mock_para_inherent_channel
+            .send_async(false.encode())
+            .await
+            .map_err(|err| internal_err(err.to_string()))?;
+
+        Ok(())
+    }
+}
+
+// This bit cribbed from frontier.
+pub fn internal_err<T: ToString>(message: T) -> ErrorObjectOwned {
+    ErrorObjectOwned::owned(
+        INTERNAL_ERROR_CODE,
+        INTERNAL_ERROR_MSG,
+        Some(message.to_string()),
+    )
+}