basic processing

verification/src/lib.rs

@@ -54,6 +54,14 @@ pub enum Chain {
 	Orphan,
 }
 
+/// block status within the queue
+pub enum BlockStatus {
+	Valid,
+	Invalid,
+	Pending,
+	Absent,
+}
+
 /// Verification result
 pub type VerificationResult = Result<Chain, Error>;
 

verification/src/queue.rs

@@ -2,7 +2,7 @@
 
 use chain::{Block, BlockHeader};
 use primitives::hash::H256;
-use super::{Chain, Verify};
+use super::{Chain, Verify, BlockStatus};
 use linked_hash_map::LinkedHashMap;
 use parking_lot::RwLock;
 use std::collections::HashSet;
@@ -18,6 +18,7 @@ impl VerifiedBlock {
 	}
 }
 
+/// Verification queue
 pub struct Queue {
 	verifier: Box<Verify>,
 	items: RwLock<LinkedHashMap<H256, Block>>,
@@ -26,6 +27,7 @@ pub struct Queue {
 }
 
 impl Queue {
+	/// Process one block in the queue
 	pub fn process(&self) {
 		let (hash, block) = {
 			let mut items = self.items.write();
@@ -48,4 +50,12 @@ impl Queue {
 			}
 		}
 	}
+
+	/// Query block status
+	pub fn block_status(&self, hash: &H256) {
+		if self.invalid.read().contains_key(hash) { BlockStatus::Invalid }
+		else if self.verified.read().contains_key(hash) { BlockStatus::Valid }
+		else if self.items.read().contains_key(hash) { BlockStatus::Pending }
+		else { BlockStatus::Absent }
+	}
 }