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use crate::{client::Web3, types::NewFilter};
use crate::{jsonrpc::error::Web3Error, types::Log};
use clarity::{
abi::{derive_signature, SerializedToken, Token},
utils::bytes_to_hex_str,
};
use clarity::{Address, Uint256};
use std::time::{Duration, Instant};
use tokio::time::sleep as delay_for;
pub fn address_to_event(address: Address) -> [u8; 32] {
let token = Token::Address(address);
match token.serialize() {
SerializedToken::Dynamic(_) => panic!("Addresses are not dynamic!"),
SerializedToken::Static(v) => v,
}
}
fn bytes_to_data(s: &[u8]) -> String {
let mut val = "0x".to_string();
val.push_str(&bytes_to_hex_str(s));
val
}
impl Web3 {
pub async fn wait_for_event_alt<F: Fn(Log) -> bool + 'static>(
&self,
wait_time: Duration,
contract_address: Vec<Address>,
event: &str,
topics: Vec<Vec<[u8; 32]>>,
local_filter: F,
) -> Result<Log, Web3Error> {
let sig = derive_signature(event)?;
let mut final_topics = vec![Some(vec![Some(bytes_to_data(&sig))])];
for topic in topics {
let mut parts = Vec::new();
for item in topic {
parts.push(Some(bytes_to_data(&item)))
}
final_topics.push(Some(parts));
}
let new_filter = NewFilter {
address: contract_address,
from_block: None,
to_block: None,
topics: Some(final_topics),
};
delay_for(wait_time).await;
let logs = match self.eth_get_logs(new_filter.clone()).await {
Ok(logs) => logs,
Err(e) => return Err(e),
};
for log in logs {
if local_filter(log.clone()) {
return Ok(log);
}
}
Err(Web3Error::EventNotFound(event.to_string()))
}
pub async fn wait_for_event<F: Fn(Log) -> bool + 'static>(
&self,
wait_for: Duration,
contract_address: Vec<Address>,
event: &str,
topics: Vec<Vec<[u8; 32]>>,
local_filter: F,
) -> Result<Log, Web3Error> {
let sig = derive_signature(event)?;
let mut final_topics = vec![Some(vec![Some(bytes_to_data(&sig))])];
for topic in topics {
let mut parts = Vec::new();
for item in topic {
parts.push(Some(bytes_to_data(&item)))
}
final_topics.push(Some(parts));
}
let new_filter = NewFilter {
address: contract_address,
from_block: None,
to_block: None,
topics: Some(final_topics),
};
let filter_id = match self.eth_new_filter(new_filter).await {
Ok(f) => f,
Err(e) => return Err(e),
};
let start = Instant::now();
let mut found_log = None;
while Instant::now() - start < wait_for {
delay_for(Duration::from_secs(1)).await;
let logs = match self.eth_get_filter_changes(filter_id.clone()).await {
Ok(changes) => changes,
Err(e) => return Err(e),
};
for log in logs {
if local_filter(log.clone()) {
found_log = Some(log);
break;
}
}
}
if let Err(e) = self.eth_uninstall_filter(filter_id).await {
return Err(Web3Error::CouldNotRemoveFilter(format!("{}", e)));
}
match found_log {
Some(log) => Ok(log),
None => Err(Web3Error::EventNotFound(event.to_string())),
}
}
pub async fn check_for_events(
&self,
start_block: Uint256,
end_block: Option<Uint256>,
contract_address: Vec<Address>,
events: Vec<&str>,
) -> Result<Vec<Log>, Web3Error> {
let from_block = Some(format!("{:#x}", start_block));
let to_block;
if let Some(end_block) = end_block {
to_block = Some(format!("{:#x}", end_block));
} else {
let latest_block = self.eth_block_number().await?;
to_block = Some(format!("{:#x}", latest_block));
}
let mut final_topics = Vec::new();
for event in events {
let sig = derive_signature(event)?;
final_topics.push(Some(vec![Some(bytes_to_data(&sig))]));
}
let new_filter = NewFilter {
address: contract_address,
from_block,
to_block,
topics: Some(final_topics),
};
self.eth_get_logs(new_filter).await
}
pub async fn check_for_arbitrary_events(
&self,
start_block: Uint256,
end_block: Option<Uint256>,
contract_address: Vec<Address>,
topics: Vec<Vec<[u8; 32]>>,
) -> Result<Vec<Log>, Web3Error> {
let from_block = Some(format!("{:#x}", start_block));
let to_block;
if let Some(end_block) = end_block {
to_block = Some(format!("{:#x}", end_block));
} else {
let latest_block = self.eth_block_number().await?;
to_block = Some(format!("{:#x}", latest_block));
}
let mut final_topics = Vec::new();
for topic in topics {
let mut parts = Vec::new();
for item in topic {
parts.push(Some(bytes_to_data(&item)))
}
final_topics.push(Some(parts));
}
let new_filter = NewFilter {
address: contract_address,
from_block,
to_block,
topics: Some(final_topics),
};
self.eth_get_logs(new_filter).await
}
}