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downstream.rs
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downstream.rs
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//
// Copyright 2019 Tamas Blummer
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
//!
//! # Connector to downstream modules
//!
use bitcoin::{
blockdata::{
block::{Block, BlockHeader}
},
};
use std::sync::{Arc, Mutex};
pub type SharedDownstream = Arc<Mutex<dyn Downstream>>;
pub trait Downstream : Send + Sync {
/// called by the node if new block added to trunk (longest chain)
fn block_connected(&mut self, block: &Block, height: u32);
/// called by the node if new header added to trunk (longest chain)
fn header_connected(&mut self, header: &BlockHeader, height: u32);
/// called by the node if a block is removed from trunk (orphaned from longest chain)
fn block_disconnected(&mut self, header: &BlockHeader);
}
pub struct DownStreamDummy {}
impl Downstream for DownStreamDummy {
fn block_connected(&mut self, _block: &Block, _height: u32) {}
fn header_connected(&mut self, _header: &BlockHeader, _height: u32) {}
fn block_disconnected(&mut self, _header: &BlockHeader) {}
}