From e6acbc5a5885a5a0bfc3ef91b2f3732e2e8a7d36 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andr=C3=A9=20Silva?= <andre.beat@gmail.com>
Date: Mon, 23 Jul 2018 14:42:08 +0100
Subject: [PATCH] rpc: fix is_major_importing sync state condition (#9112)

* rpc: fix is_major_importing sync state condition

* rpc: fix informant printout when waiting for peers
---
 parity/informant.rs                | 14 +++++++-------
 rpc/src/lib.rs                     |  2 +-
 rpc/src/v1/helpers/block_import.rs | 13 ++++++++++---
 3 files changed, 18 insertions(+), 11 deletions(-)

diff --git a/parity/informant.rs b/parity/informant.rs
index 6f1227592..d3489a52f 100644
--- a/parity/informant.rs
+++ b/parity/informant.rs
@@ -35,7 +35,7 @@ use io::{TimerToken, IoContext, IoHandler};
 use light::Cache as LightDataCache;
 use light::client::{LightChainClient, LightChainNotify};
 use number_prefix::{binary_prefix, Standalone, Prefixed};
-use parity_rpc::{is_major_importing};
+use parity_rpc::is_major_importing_or_waiting;
 use parity_rpc::informant::RpcStats;
 use ethereum_types::H256;
 use bytes::Bytes;
@@ -128,7 +128,7 @@ impl InformantData for FullNodeInformantData {
 
 	fn is_major_importing(&self) -> bool {
 		let state = self.sync.as_ref().map(|sync| sync.status().state);
-		is_major_importing(state, self.client.queue_info())
+		is_major_importing_or_waiting(state, self.client.queue_info(), false)
 	}
 
 	fn report(&self) -> Report {
@@ -142,7 +142,8 @@ impl InformantData for FullNodeInformantData {
 		cache_sizes.insert("queue", queue_info.mem_used);
 		cache_sizes.insert("chain", blockchain_cache_info.total());
 
-		let (importing, sync_info) = match (self.sync.as_ref(), self.net.as_ref()) {
+		let importing = self.is_major_importing();
+		let sync_info = match (self.sync.as_ref(), self.net.as_ref()) {
 			(Some(sync), Some(net)) => {
 				let status = sync.status();
 				let num_peers_range = net.num_peers_range();
@@ -150,16 +151,15 @@ impl InformantData for FullNodeInformantData {
 
 				cache_sizes.insert("sync", status.mem_used);
 
-				let importing = is_major_importing(Some(status.state), queue_info.clone());
-				(importing, Some(SyncInfo {
+				Some(SyncInfo {
 					last_imported_block_number: status.last_imported_block_number.unwrap_or(chain_info.best_block_number),
 					last_imported_old_block_number: status.last_imported_old_block_number,
 					num_peers: status.num_peers,
 					max_peers: status.current_max_peers(num_peers_range.start, num_peers_range.end - 1),
 					snapshot_sync: status.is_snapshot_syncing(),
-				}))
+				})
 			}
-			_ => (is_major_importing(self.sync.as_ref().map(|s| s.status().state), queue_info.clone()), None),
+			_ => None
 		};
 
 		Report {
diff --git a/rpc/src/lib.rs b/rpc/src/lib.rs
index e748b840c..96926700c 100644
--- a/rpc/src/lib.rs
+++ b/rpc/src/lib.rs
@@ -118,7 +118,7 @@ pub use http::{
 };
 
 pub use v1::{NetworkSettings, Metadata, Origin, informant, dispatch, signer};
-pub use v1::block_import::is_major_importing;
+pub use v1::block_import::{is_major_importing, is_major_importing_or_waiting};
 pub use v1::extractors::{RpcExtractor, WsExtractor, WsStats, WsDispatcher};
 pub use authcodes::{AuthCodes, TimeProvider};
 pub use http_common::HttpMetaExtractor;
diff --git a/rpc/src/v1/helpers/block_import.rs b/rpc/src/v1/helpers/block_import.rs
index 9e947e5ba..50a4ed8e0 100644
--- a/rpc/src/v1/helpers/block_import.rs
+++ b/rpc/src/v1/helpers/block_import.rs
@@ -19,16 +19,23 @@
 use ethcore::client::BlockQueueInfo;
 use sync::SyncState;
 
-/// Check if client is during major sync or during block import.
-pub fn is_major_importing(sync_state: Option<SyncState>, queue_info: BlockQueueInfo) -> bool {
+/// Check if client is during major sync or during block import and allows defining whether 'waiting for peers' should
+/// be considered a syncing state.
+pub fn is_major_importing_or_waiting(sync_state: Option<SyncState>, queue_info: BlockQueueInfo, waiting_is_syncing_state: bool) -> bool {
 	let is_syncing_state = sync_state.map_or(false, |s| match s {
-		SyncState::Idle | SyncState::NewBlocks | SyncState::WaitingPeers => false,
+		SyncState::Idle | SyncState::NewBlocks => false,
+		SyncState::WaitingPeers if !waiting_is_syncing_state => false,
 		_ => true,
 	});
 	let is_verifying = queue_info.unverified_queue_size + queue_info.verified_queue_size > 3;
 	is_verifying || is_syncing_state
 }
 
+/// Check if client is during major sync or during block import.
+pub fn is_major_importing(sync_state: Option<SyncState>, queue_info: BlockQueueInfo) -> bool {
+	is_major_importing_or_waiting(sync_state, queue_info, true)
+}
+
 #[cfg(test)]
 mod tests {
 	use ethcore::client::BlockQueueInfo;