tokio spawn the cached future (#217)
* tokio spawn the cached future * lint
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@ -1254,12 +1254,9 @@ impl Web3ProxyApp {
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head_block: Option<&Web3ProxyBlock>,
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head_block: Option<&Web3ProxyBlock>,
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request_metadata: &Arc<RequestMetadata>,
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request_metadata: &Arc<RequestMetadata>,
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) -> Web3ProxyResult<JsonRpcResponseEnum<Arc<RawValue>>> {
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) -> Web3ProxyResult<JsonRpcResponseEnum<Arc<RawValue>>> {
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// TODO: don't clone into a new string?
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let request_method = method.to_string();
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// TODO: serve net_version without querying the backend
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// TODO: serve net_version without querying the backend
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// TODO: don't force RawValue
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// TODO: don't force RawValue
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let response_data: JsonRpcResponseEnum<Arc<RawValue>> = match request_method.as_ref() {
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let response_data: JsonRpcResponseEnum<Arc<RawValue>> = match method {
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// lots of commands are blocked
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// lots of commands are blocked
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method @ ("db_getHex"
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method @ ("db_getHex"
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| "db_getString"
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| "db_getString"
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@ -1733,7 +1730,7 @@ impl Web3ProxyApp {
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}
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}
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};
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};
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// TODO: think more about timeouts
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// TODO: think more about this timeout. we should probably have a `request_expires_at` Duration on the request_metadata
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// TODO: different user tiers should have different timeouts
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// TODO: different user tiers should have different timeouts
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// erigon's timeout is 300, so keep this a few seconds shorter
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// erigon's timeout is 300, so keep this a few seconds shorter
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let max_wait = Some(Duration::from_secs(295));
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let max_wait = Some(Duration::from_secs(295));
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@ -1748,15 +1745,21 @@ impl Web3ProxyApp {
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// TODO: try to fetch out of s3
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// TODO: try to fetch out of s3
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self
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// TODO: clone less?
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let app = self.clone();
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let method = method.to_string();
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let params = params.clone();
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let request_metadata = request_metadata.clone();
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let f = async move {
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app
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.jsonrpc_response_cache
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.jsonrpc_response_cache
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.try_get_with::<_, Web3ProxyError>(cache_key.hash(), async {
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.try_get_with::<_, Web3ProxyError>(cache_key.hash(), async {
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// TODO: think more about this timeout. we should probably have a `request_expires_at` Duration on the request_metadata
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let response_data = timeout(Duration::from_secs(290), app.balanced_rpcs
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let response_data = timeout(Duration::from_secs(290), self.balanced_rpcs
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.try_proxy_connection::<_, Arc<RawValue>>(
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.try_proxy_connection::<_, Arc<RawValue>>(
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method,
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&method,
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params,
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¶ms,
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Some(request_metadata),
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Some(&request_metadata),
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max_wait,
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max_wait,
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from_block_num.as_ref(),
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from_block_num.as_ref(),
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to_block_num.as_ref(),
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to_block_num.as_ref(),
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@ -1788,7 +1791,11 @@ impl Web3ProxyApp {
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}
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}
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Err(err) => Err(Web3ProxyError::from(err)),
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Err(err) => Err(Web3ProxyError::from(err)),
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}
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}
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}).await?
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}).await
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};
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// this is spawned so that if the client disconnects, the app keeps polling the future with a lock inside the moka cache
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tokio::spawn(f).await??
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} else {
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} else {
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let x = timeout(
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let x = timeout(
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Duration::from_secs(300),
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Duration::from_secs(300),
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