# Trait ethcore::client::chain_notify::ChainNotify [−] [src]

    pub trait ChainNotify: Send + Sync {
        fn new_blocks(&self,
                  _imported: Vec<H256>,
                  _invalid: Vec<H256>,
                  _enacted: Vec<H256>,
                  _retracted: Vec<H256>,
                  _sealed: Vec<H256>,
                  _proposed: Vec<Bytes>,
                  _duration: u64) { ... }
        fn start(&self) { ... }
        fn stop(&self) { ... }
        fn broadcast(&self, _data: Vec<u8>) { ... }
        fn transactions_received(&self, _hashes: Vec<H256>, _peer_id: usize) { ... }
    }

Represents what has to be handled by actor listening to chain events

## Provided Methods

### `fn new_blocks(&self,
_imported: Vec<H256>,
_invalid: Vec<H256>,
_enacted: Vec<H256>,
_retracted: Vec<H256>,
_sealed: Vec<H256>,
_proposed: Vec<Bytes>,
_duration: u64)`

fires when chain has new blocks.

### `fn start(&self)`

fires when chain achieves active mode

### `fn stop(&self)`

fires when chain achieves passive mode

### `fn broadcast(&self, _data: Vec<u8>)`

fires when chain broadcasts a message

### `fn transactions_received(&self, _hashes: Vec<H256>, _peer_id: usize)`

fires when new transactions are received from a peer

## Trait Implementations

### `impl IpcConfig for ChainNotify`
[src]

#### `fn api_version() -> Version`

Current service api version Should be increased if any of the methods changes signature Read more

#### `fn protocol_version() -> Version`

Current ipc protocol version Should be increased only if signature of system methods changes Read more

#### `fn handshake(handshake: &Handshake) -> bool`

Default handshake requires exact versions match

## Implementors

- `impl ChainNotify for Watcher`

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