Add an override config to create_channel to allow a per channel config

Author: ccdle12

lightning/src/ln/channelmanager.rs

@@ -680,12 +680,22 @@ impl<ChanSigner: ChannelKeys, M: Deref, T: Deref> ChannelManager<ChanSigner, M,
 	///
 	/// Raises APIError::APIMisuseError when channel_value_satoshis > 2**24 or push_msat is
 	/// greater than channel_value_satoshis * 1k or channel_value_satoshis is < 1000.
-	pub fn create_channel(&self, their_network_key: PublicKey, channel_value_satoshis: u64, push_msat: u64, user_id: u64) -> Result<(), APIError> {
+	pub fn create_channel(&self, their_network_key: PublicKey, channel_value_satoshis: u64, push_msat: u64, user_id: u64, override_config: Option<UserConfig>) -> Result<(), APIError> {
 		if channel_value_satoshis < 1000 {
 			return Err(APIError::APIMisuseError { err: "channel_value must be at least 1000 satoshis" });
 		}
 
-		let channel = Channel::new_outbound(&*self.fee_estimator, &self.keys_manager, their_network_key, channel_value_satoshis, push_msat, user_id, Arc::clone(&self.logger), &self.default_configuration)?;
+                let channel = match override_config {
+                    Some(config) => {
+                        Channel::new_outbound(&*self.fee_estimator, &self.keys_manager, their_network_key, channel_value_satoshis, push_msat, user_id,
+                            Arc::clone(&self.logger), &config)?
+                    },
+                    None => {
+                        Channel::new_outbound(&*self.fee_estimator, &self.keys_manager, their_network_key, channel_value_satoshis, push_msat, user_id,
+                            Arc::clone(&self.logger), &self.default_configuration)?
+                    }
+                };
+
 		let res = channel.get_open_channel(self.genesis_hash.clone(), &*self.fee_estimator);
 
 		let _ = self.total_consistency_lock.read().unwrap();