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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,231 @@ | ||
| // Copyright (C) 2013-2020 Blockstack PBC, a public benefit corporation | ||
| // Copyright (C) 2020-2024 Stacks Open Internet Foundation | ||
| // | ||
| // This program is free software: you can redistribute it and/or modify | ||
| // it under the terms of the GNU General Public License as published by | ||
| // the Free Software Foundation, either version 3 of the License, or | ||
| // (at your option) any later version. | ||
| // | ||
| // This program is distributed in the hope that it will be useful, | ||
| // but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| // GNU General Public License for more details. | ||
| // | ||
| // You should have received a copy of the GNU General Public License | ||
| // along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
|
|
||
| use std::io::{Read, Seek, SeekFrom, Write}; | ||
| use std::{fs, io}; | ||
|
|
||
| use regex::{Captures, Regex}; | ||
| use rusqlite::Connection; | ||
| use serde::de::Error as de_Error; | ||
| use stacks_common::codec::{StacksMessageCodec, MAX_MESSAGE_LEN}; | ||
| use stacks_common::types::chainstate::{ConsensusHash, StacksBlockId}; | ||
| use stacks_common::types::net::PeerHost; | ||
| use {serde, serde_json}; | ||
|
|
||
| use crate::chainstate::nakamoto::{ | ||
| NakamotoBlock, NakamotoChainState, NakamotoStagingBlocksConn, StacksDBIndexed, | ||
| }; | ||
| use crate::chainstate::stacks::db::StacksChainState; | ||
| use crate::chainstate::stacks::Error as ChainError; | ||
| use crate::net::api::getblock_v3::{NakamotoBlockStream, RPCNakamotoBlockRequestHandler}; | ||
| use crate::net::http::{ | ||
| parse_bytes, Error, HttpBadRequest, HttpChunkGenerator, HttpContentType, HttpNotFound, | ||
| HttpRequest, HttpRequestContents, HttpRequestPreamble, HttpResponse, HttpResponseContents, | ||
| HttpResponsePayload, HttpResponsePreamble, HttpServerError, HttpVersion, | ||
| }; | ||
| use crate::net::httpcore::{ | ||
| HttpRequestContentsExtensions, RPCRequestHandler, StacksHttp, StacksHttpRequest, | ||
| StacksHttpResponse, | ||
| }; | ||
| use crate::net::{Error as NetError, StacksNodeState, TipRequest, MAX_HEADERS}; | ||
| use crate::util_lib::db::{DBConn, Error as DBError}; | ||
|
|
||
| #[derive(Clone)] | ||
| pub struct RPCNakamotoBlockByHeightRequestHandler { | ||
| pub block_height: Option<u64>, | ||
| } | ||
|
|
||
| impl RPCNakamotoBlockByHeightRequestHandler { | ||
| pub fn new() -> Self { | ||
| Self { block_height: None } | ||
| } | ||
| } | ||
|
|
||
| /// Decode the HTTP request | ||
| impl HttpRequest for RPCNakamotoBlockByHeightRequestHandler { | ||
| fn verb(&self) -> &'static str { | ||
| "GET" | ||
| } | ||
|
|
||
| fn path_regex(&self) -> Regex { | ||
| Regex::new(r#"^/v3/blocks/height/(?P<block_height>[0-9]{1,20})$"#).unwrap() | ||
| } | ||
|
|
||
| fn metrics_identifier(&self) -> &str { | ||
| "/v3/blocks/height/:block_height" | ||
| } | ||
|
|
||
| /// Try to decode this request. | ||
| /// There's nothing to load here, so just make sure the request is well-formed. | ||
| fn try_parse_request( | ||
| &mut self, | ||
| preamble: &HttpRequestPreamble, | ||
| captures: &Captures, | ||
| query: Option<&str>, | ||
| _body: &[u8], | ||
| ) -> Result<HttpRequestContents, Error> { | ||
| if preamble.get_content_length() != 0 { | ||
| return Err(Error::DecodeError( | ||
| "Invalid Http request: expected 0-length body".to_string(), | ||
| )); | ||
| } | ||
|
|
||
| let block_height_str = captures | ||
| .name("block_height") | ||
| .ok_or_else(|| { | ||
| Error::DecodeError("Failed to match path to block height group".to_string()) | ||
| })? | ||
| .as_str(); | ||
|
|
||
| let block_height = block_height_str.parse::<u64>().map_err(|_| { | ||
| Error::DecodeError("Invalid path: unparseable block height".to_string()) | ||
| })?; | ||
| self.block_height = Some(block_height); | ||
|
|
||
| Ok(HttpRequestContents::new().query_string(query)) | ||
| } | ||
| } | ||
|
|
||
| impl RPCRequestHandler for RPCNakamotoBlockByHeightRequestHandler { | ||
| /// Reset internal state | ||
| fn restart(&mut self) { | ||
| self.block_height = None; | ||
| } | ||
|
|
||
| /// Make the response | ||
| fn try_handle_request( | ||
| &mut self, | ||
| preamble: HttpRequestPreamble, | ||
| contents: HttpRequestContents, | ||
| node: &mut StacksNodeState, | ||
| ) -> Result<(HttpResponsePreamble, HttpResponseContents), NetError> { | ||
| let block_height = self | ||
| .block_height | ||
| .take() | ||
| .ok_or(NetError::SendError("Missing `block_height`".into()))?; | ||
|
|
||
| let tip = match node.load_stacks_chain_tip(&preamble, &contents) { | ||
| Ok(tip) => tip, | ||
| Err(error_resp) => { | ||
| return error_resp.try_into_contents().map_err(NetError::from); | ||
| } | ||
| }; | ||
|
|
||
| let index_block_hash_res = | ||
| node.with_node_state(|_network, _sortdb, chainstate, _mempool, _rpc_args| { | ||
| chainstate | ||
| .index_conn() | ||
| .get_ancestor_block_hash(block_height, &tip) | ||
| }); | ||
|
|
||
| let block_id = match index_block_hash_res { | ||
| Ok(index_block_hash_opt) => match index_block_hash_opt { | ||
| Some(index_block_hash) => index_block_hash, | ||
| None => { | ||
| // block hash not found | ||
| let msg = format!("No such block #{:?}\n", block_height); | ||
| warn!("{}", &msg); | ||
| return StacksHttpResponse::new_error(&preamble, &HttpNotFound::new(msg)) | ||
| .try_into_contents() | ||
| .map_err(NetError::from); | ||
| } | ||
| }, | ||
| Err(e) => { | ||
| // error querying the db | ||
| let msg = format!("Failed to load block #{}: {:?}\n", block_height, &e); | ||
| warn!("{}", &msg); | ||
| return StacksHttpResponse::new_error(&preamble, &HttpServerError::new(msg)) | ||
| .try_into_contents() | ||
| .map_err(NetError::from); | ||
| } | ||
| }; | ||
|
|
||
| let stream_res = | ||
| node.with_node_state(|_network, _sortdb, chainstate, _mempool, _rpc_args| { | ||
| let Some((tenure_id, parent_block_id)) = chainstate | ||
| .nakamoto_blocks_db() | ||
| .get_tenure_and_parent_block_id(&block_id)? | ||
| else { | ||
| return Err(ChainError::NoSuchBlockError); | ||
| }; | ||
| NakamotoBlockStream::new(chainstate, block_id, tenure_id, parent_block_id) | ||
| }); | ||
|
|
||
| // start loading up the block | ||
| let stream = match stream_res { | ||
| Ok(stream) => stream, | ||
| Err(ChainError::NoSuchBlockError) => { | ||
| return StacksHttpResponse::new_error( | ||
| &preamble, | ||
| &HttpNotFound::new(format!("No such block #{:?}\n", &block_height)), | ||
| ) | ||
| .try_into_contents() | ||
| .map_err(NetError::from) | ||
| } | ||
| Err(e) => { | ||
| // nope -- error trying to check | ||
| let msg = format!("Failed to load block #{}: {:?}\n", block_height, &e); | ||
| warn!("{}", &msg); | ||
| return StacksHttpResponse::new_error(&preamble, &HttpServerError::new(msg)) | ||
| .try_into_contents() | ||
| .map_err(NetError::from); | ||
| } | ||
| }; | ||
|
|
||
| let resp_preamble = HttpResponsePreamble::from_http_request_preamble( | ||
| &preamble, | ||
| 200, | ||
| "OK", | ||
| None, | ||
| HttpContentType::Bytes, | ||
| ); | ||
|
|
||
| Ok(( | ||
| resp_preamble, | ||
| HttpResponseContents::from_stream(Box::new(stream)), | ||
| )) | ||
| } | ||
| } | ||
|
|
||
| /// Decode the HTTP response | ||
| impl HttpResponse for RPCNakamotoBlockByHeightRequestHandler { | ||
| /// Decode this response from a byte stream. This is called by the client to decode this | ||
| /// message | ||
| fn try_parse_response( | ||
| &self, | ||
| preamble: &HttpResponsePreamble, | ||
| body: &[u8], | ||
| ) -> Result<HttpResponsePayload, Error> { | ||
| let bytes = parse_bytes(preamble, body, MAX_MESSAGE_LEN.into())?; | ||
| Ok(HttpResponsePayload::Bytes(bytes)) | ||
| } | ||
| } | ||
|
|
||
| impl StacksHttpRequest { | ||
| pub fn new_get_nakamoto_block_by_height( | ||
| host: PeerHost, | ||
| block_height: u64, | ||
| tip: TipRequest, | ||
| ) -> StacksHttpRequest { | ||
| StacksHttpRequest::new_for_peer( | ||
| host, | ||
| "GET".into(), | ||
| format!("/v3/blocks/height/{}", block_height), | ||
| HttpRequestContents::new().for_tip(tip), | ||
| ) | ||
| .expect("FATAL: failed to construct request from infallible data") | ||
| } | ||
| } |
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