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Replace most of HTTP GETs with JSONRPC calls

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This commit is contained in:
Roman Zeyde 2018-05-09 23:19:17 +03:00
parent 1b2a84c0ff
commit 039276bff2
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GPG Key ID: 87CAE5FA46917CBB
7 changed files with 115 additions and 58 deletions
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2
Cargo.toml
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@ -11,7 +11,7 @@ bincode = "1.0.0"
bitcoin = "0.12"
crossbeam = "0.3.2"
error-chain = "0.11"
extfmt = "0.1"
hex = "0.3"
itertools = "0.7.8"
log = "0.4"
pbr = "1.0.0"

113
src/daemon.rs
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@ -1,9 +1,11 @@
use base64;
use bitcoin::blockdata::block::BlockHeader;
use bitcoin::blockdata::block::{Block, BlockHeader};
use bitcoin::blockdata::transaction::Transaction;
use bitcoin::network::encodable::ConsensusDecodable;
use bitcoin::network::serialize::BitcoinHash;
use bitcoin::network::serialize::deserialize;
use bitcoin::network::serialize::RawDecoder;
use hex;
use reqwest;
use serde_json::{from_str, Value};
use std::env::home_dir;
@ -21,8 +23,9 @@ const HEADER_SIZE: usize = 80;
fn read_cookie() -> Vec<u8> {
let mut path = home_dir().unwrap();
path.push(".bitcoin");
path.push("testnet3");
path.push(".cookie");
read_contents(&path).unwrap()
read_contents(&path).expect("failed to read cookie")
}
pub struct Daemon {
@ -39,7 +42,7 @@ impl Daemon {
}
// TODO: use error_chain for errors here.
fn request(&self, resource: &str) -> Result<reqwest::Response> {
fn call_http(&self, resource: &str) -> Result<reqwest::Response> {
let url = format!("{}/rest/{}", self.url, resource);
Ok(reqwest::get(&url)
.chain_err(|| format!("failed to get {}", url))?
@ -49,15 +52,15 @@ impl Daemon {
pub fn get(&self, resource: &str) -> Result<Bytes> {
let mut buf = Bytes::new();
let mut resp = self.request(resource)?;
let mut resp = self.call_http(resource)?;
resp.copy_to(&mut buf)
.chain_err(|| "failed to read response")?;
Ok(buf)
}
pub fn call(&self, method: &str, params: Value) -> Result<Value> {
let mut conn = TcpStream::connect("127.0.0.1:8332").chain_err(|| "failed to connect")?;
let request = json!({"method": method, "params": params}).to_string();
fn call_jsonrpc(&self, request: &Value) -> Result<Value> {
let mut conn = TcpStream::connect("127.0.0.1:18332").chain_err(|| "failed to connect")?;
let request = request.to_string();
let msg = format!(
"POST / HTTP/1.1\nAuthorization: Basic {}\nContent-Length: {}\n\n{}",
self.cookie_b64,
@ -79,19 +82,91 @@ impl Daemon {
}
}
let contents = contents.chain_err(|| "no reply")?;
let mut reply: Value = from_str(&contents).chain_err(|| "invalid JSON")?;
let reply: Value = from_str(&contents).chain_err(|| "invalid JSON")?;
Ok(reply)
}
fn request(&self, method: &str, params: Value) -> Result<Value> {
let req = json!({"method": method, "params": params});
let mut reply = self.call_jsonrpc(&req)
.chain_err(|| format!("RPC failed: {}", req))?;
let err = reply["error"].take();
if !err.is_null() {
bail!("called failed: {}", err);
bail!("{} RPC error: {}", method, err);
}
Ok(reply["result"].take())
}
fn requests(&self, method: &str, params_list: &[Value]) -> Result<Vec<Value>> {
let reqs = params_list
.iter()
.map(|params| json!({"method": method, "params": params}))
.collect();
let mut result = Vec::new();
for reply in self.call_jsonrpc(&reqs)
.chain_err(|| format!("RPC failed: {}", reqs))?
.as_array_mut()
.chain_err(|| "non-array response")?
{
let err = reply["error"].take();
if !err.is_null() {
bail!("{} RPC error: {}", method, err);
}
result.push(reply["result"].take())
}
Ok(result)
}
// bitcoind JSONRPC API:
pub fn getbestblockhash(&self) -> Result<Sha256dHash> {
let reply = self.request("getbestblockhash", json!([]))?;
Ok(
Sha256dHash::from_hex(reply.as_str().chain_err(|| "non-string bestblockhash")?)
.chain_err(|| "non-hex bestblockhash")?,
)
}
pub fn getblockheader(&self, blockhash: &Sha256dHash) -> Result<BlockHeader> {
let header_hex: Value = self.request(
"getblockheader",
json!([blockhash.be_hex_string(), /*verbose=*/ false]),
)?;
Ok(deserialize(
&hex::decode(header_hex.as_str().chain_err(|| "non-string header")?)
.chain_err(|| "non-hex header")?,
).chain_err(|| format!("failed to parse blockheader {}", blockhash))?)
}
pub fn getblock(&self, blockhash: &Sha256dHash) -> Result<Block> {
let block_hex: Value = self.request(
"getblock",
json!([blockhash.be_hex_string(), /*verbose=*/ false]),
)?;
Ok(deserialize(
&hex::decode(block_hex.as_str().chain_err(|| "non-string block")?)
.chain_err(|| "non-hex block")?,
).chain_err(|| format!("failed to parse block {}", blockhash))?)
}
pub fn gettransaction(&self, txhash: &Sha256dHash) -> Result<Transaction> {
let tx_hex: Value = self.request(
"getrawtransaction",
json!([txhash.be_hex_string(), /*verbose=*/ false]),
)?;
Ok(
deserialize(&hex::decode(tx_hex.as_str().chain_err(|| "non-string tx")?)
.chain_err(|| "non-hex tx")?)
.chain_err(|| format!("failed to parse tx {}", txhash))?,
)
}
fn get_all_headers(&self) -> Result<HeaderMap> {
let mut headers = HeaderMap::new();
let genesis_blockhash = self.request("getblockhash", json!([0]))?;
let mut blockhash = Sha256dHash::from_hex(
"000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f",
).unwrap(); // genesis block hash
genesis_blockhash.as_str().expect("non-string blockhash"),
).expect("non-hex blockhash");
loop {
let data = self.get(&format!("headers/2000/{}.bin", blockhash.be_hex_string()))
.chain_err(|| "failed to get headers")?;
@ -113,16 +188,13 @@ impl Daemon {
fn add_missing_headers(&self, mut header_map: HeaderMap) -> Result<(HeaderMap, Sha256dHash)> {
// Get current best blockhash (using JSONRPC API)
let reply = self.call("getbestblockhash", json!([]))?;
let bestblockhash =
Sha256dHash::from_hex(reply.as_str().chain_err(|| "non-string bestblockhash")?)
.chain_err(|| "non-hex bestblockhash")?;
let bestblockhash = self.getbestblockhash()?;
// Iterate back over headers until known blockash is found:
let mut blockhash = bestblockhash;
while !header_map.contains_key(&blockhash) {
let data = self.get(&format!("headers/1/{}.bin", blockhash.be_hex_string()))?;
let header: BlockHeader = deserialize(&data)
.chain_err(|| format!("failed to parse blockheader {}", blockhash))?;
let nullhash = Sha256dHash::default();
while !header_map.contains_key(&blockhash) && blockhash != nullhash {
let header = self.getblockheader(&blockhash)
.chain_err(|| "failed to get missing headers")?;
header_map.insert(blockhash, header);
blockhash = header.prev_blockhash;
}
@ -130,14 +202,17 @@ impl Daemon {
}
pub fn enumerate_headers(&self, indexed_headers: &HeaderList) -> Result<HeaderList> {
info!("loading headers");
let header_map = if indexed_headers.headers().is_empty() {
self.get_all_headers()
.chain_err(|| "failed to download all headers")?
} else {
indexed_headers.as_map()
};
info!("loaded headers");
let (header_map, blockhash) = self.add_missing_headers(header_map)
.chain_err(|| "failed to add missing headers")?;
info!("added missing headers");
Ok(HeaderList::build(header_map, blockhash))
}
}

23
src/index.rs
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@ -16,7 +16,7 @@ use std::time::{Duration, Instant};
use time;
use store::{Row, Store};
use types::{Bytes, HeaderMap};
use types::HeaderMap;
use daemon::Daemon;
// TODO: consolidate serialization/deserialize code for bincode/bitcoin.
@ -281,29 +281,22 @@ impl<'a> Iterator for Indexer<'a> {
}
let &entry = &self.headers[self.header_index];
let &blockhash = entry.hash();
let blockhash_hex = blockhash.be_hex_string();
let buf: Bytes = self.daemon
.get(&format!("block/{}.bin", blockhash_hex))
.unwrap();
let block: Block = deserialize(&buf).unwrap();
assert_eq!(block.bitcoin_hash(), blockhash);
let blockhash = entry.hash();
let block = self.daemon.getblock(&blockhash).unwrap();
assert_eq!(block.bitcoin_hash(), *blockhash);
self.blocks_size += serialize(&block).unwrap().len();
let rows = index_block(&block, entry.height());
self.blocks_size += buf.len();
self.num_of_rows += rows.len();
for row in &rows {
self.rows_size += row.key.len() + row.value.len();
}
self.num_of_rows += rows.len();
self.header_index += 1;
self.header_index += 1;
if self.header_index % 1000 == 0 {
info!(
"{} @ {}: {:.3}/{:.3} MB, {} rows",
blockhash_hex,
blockhash,
entry.height(),
self.rows_size as f64 / 1e6_f64,
self.blocks_size as f64 / 1e6_f64,

2
src/lib.rs
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@ -5,7 +5,7 @@ extern crate bincode;
extern crate bitcoin;
extern crate crossbeam;
extern crate crypto;
extern crate extfmt;
extern crate hex;
extern crate itertools;
extern crate pbr;
extern crate reqwest;

18
src/query.rs
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@ -9,7 +9,6 @@ use daemon::Daemon;
use index::{compute_script_hash, hash_prefix, HashPrefix, HeaderEntry, Index, TxInKey, TxInRow,
TxKey, TxOutRow, HASH_PREFIX_LEN};
use store::Store;
use types::Bytes;
pub struct Query<'a> {
store: &'a Store,
@ -46,6 +45,7 @@ fn merklize(left: Sha256dHash, right: Sha256dHash) -> Sha256dHash {
Sha256dHash::from_data(&data)
}
// TODO: return errors instead of panics
impl<'a> Query<'a> {
pub fn new(store: &'a Store, daemon: &'a Daemon, index: &'a Index) -> Query<'a> {
Query {
@ -61,10 +61,7 @@ impl<'a> Query<'a> {
for row in self.store.scan(&[b"T", &txid_prefix[..]].concat()) {
let key: TxKey = bincode::deserialize(&row.key).unwrap();
let txid: Sha256dHash = deserialize(&key.txid).unwrap();
let txn_bytes = self.daemon
.get(&format!("tx/{}.bin", txid.be_hex_string()))
.unwrap();
let txn: Transaction = deserialize(&txn_bytes).unwrap();
let txn: Transaction = self.get_tx(&txid);
let height: u32 = bincode::deserialize(&row.value).unwrap();
txns.push(TxnHeight { txn, height })
}
@ -152,10 +149,10 @@ impl<'a> Query<'a> {
status
}
pub fn get_tx(&self, tx_hash: &Sha256dHash) -> Bytes {
pub fn get_tx(&self, tx_hash: &Sha256dHash) -> Transaction {
self.daemon
.get(&format!("tx/{}.bin", tx_hash.be_hex_string()))
.unwrap()
.gettransaction(tx_hash)
.expect(&format!("failed to load tx {}", tx_hash))
}
pub fn get_headers(&self, heights: &[usize]) -> Vec<BlockHeader> {
@ -185,10 +182,7 @@ impl<'a> Query<'a> {
) -> Option<(Vec<Sha256dHash>, usize)> {
let header_list = self.index.headers_list();
let blockhash = header_list.headers().get(height)?.hash();
let buf = self.daemon
.get(&format!("block/{}.bin", blockhash.be_hex_string()))
.unwrap();
let block: Block = deserialize(&buf).unwrap();
let block: Block = self.daemon.getblock(&blockhash).unwrap();
let mut txids: Vec<Sha256dHash> = block.txdata.iter().map(|tx| tx.txid()).collect();
let pos = txids.iter().position(|txid| txid == tx_hash)?;
let mut merkle = Vec::new();

10
src/rpc.rs
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@ -4,6 +4,7 @@ use bitcoin::util::hash::Sha256dHash;
use crossbeam;
use crypto::digest::Digest;
use crypto::sha2::Sha256;
use hex;
use itertools;
use serde_json::{from_str, Number, Value};
use std::collections::HashMap;
@ -13,7 +14,6 @@ use std::sync::mpsc::{sync_channel, Receiver, SyncSender};
use query::{Query, Status};
use index::FullHash;
use util;
error_chain!{}
@ -52,7 +52,7 @@ fn hash_from_status(status: &Status) -> Value {
sha2.input(part.as_bytes());
}
sha2.result(&mut hash);
Value::String(util::hexlify(&hash))
Value::String(hex::encode(&hash))
}
fn jsonify_header(header: &BlockHeader, height: usize) -> Value {
@ -119,7 +119,7 @@ impl<'a> Handler<'a> {
let result = itertools::join(
headers
.into_iter()
.map(|x| util::hexlify(&serialize(&x).unwrap())),
.map(|x| hex::encode(&serialize(&x).unwrap())),
"",
);
Ok(json!(result))
@ -168,8 +168,8 @@ impl<'a> Handler<'a> {
fn blockchain_transaction_get(&self, params: &[Value]) -> Result<Value> {
// TODO: handle 'verbose' param
let tx_hash = hash_from_value(params.get(0)).chain_err(|| "bad tx_hash")?;
let tx_hex = util::hexlify(&self.query.get_tx(&tx_hash));
Ok(json!(tx_hex))
let tx = self.query.get_tx(&tx_hash);
Ok(json!(hex::encode(&serialize(&tx).unwrap())))
}
fn blockchain_transaction_get_merkle(&self, params: &[Value]) -> Result<Value> {

5
src/util.rs
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@ -1,13 +1,8 @@
use extfmt::Hexlify;
use std::fs::File;
use std::io::Result;
use std::io::Read;
use std::path::Path;
pub fn hexlify(blob: &[u8]) -> String {
format!("{}", Hexlify(blob))
}
pub fn read_contents<P: AsRef<Path>>(path: P) -> Result<Vec<u8>> {
let mut buf = Vec::new();
File::open(path)?.read_to_end(&mut buf)?;