zebra/zebrad/tests/common/checkpoints.rs

490 lines
18 KiB
Rust

//! Test generating checkpoints using `zebra-checkpoints` directly connected to `zebrad`.
//!
//! This test requires a cached chain state that is synchronized close to the network chain tip
//! height. It will finish the sync and update the cached chain state.
use std::{
env, fs,
net::SocketAddr,
path::{Path, PathBuf},
sync::atomic::{AtomicBool, Ordering},
};
use color_eyre::eyre::Result;
use tempfile::TempDir;
use zebra_chain::{
block::{Height, HeightDiff, TryIntoHeight},
parameters::Network,
transparent::MIN_TRANSPARENT_COINBASE_MATURITY,
};
use zebra_consensus::MAX_CHECKPOINT_HEIGHT_GAP;
use zebra_node_services::rpc_client::RpcRequestClient;
use zebra_test::{
args,
command::{Arguments, TestDirExt, NO_MATCHES_REGEX_ITER},
prelude::TestChild,
};
use crate::common::{
launch::spawn_zebrad_for_rpc,
sync::{CHECKPOINT_VERIFIER_REGEX, SYNC_FINISHED_REGEX},
test_type::TestType::*,
};
use super::{
config::testdir,
failure_messages::{
PROCESS_FAILURE_MESSAGES, ZEBRA_CHECKPOINTS_FAILURE_MESSAGES, ZEBRA_FAILURE_MESSAGES,
},
launch::ZebradTestDirExt,
test_type::TestType,
};
/// The environmental variable used to activate zebrad logs in the checkpoint generation test.
///
/// We use a constant so the compiler detects typos.
pub const LOG_ZEBRAD_CHECKPOINTS: &str = "LOG_ZEBRAD_CHECKPOINTS";
/// The test entry point.
#[allow(clippy::print_stdout)]
pub async fn run(network: Network) -> Result<()> {
let _init_guard = zebra_test::init();
// We want a Zebra state dir, but we don't need `lightwalletd`.
let test_type = UpdateZebraCachedStateWithRpc;
let test_name = "zebra_checkpoints_test";
// Skip the test unless the user supplied the correct cached state env vars
let Some(zebrad_state_path) = test_type.zebrad_state_path(test_name) else {
return Ok(());
};
tracing::info!(
?network,
?test_type,
?zebrad_state_path,
"running zebra_checkpoints test, spawning zebrad...",
);
// Sync zebrad to the network chain tip
let (mut zebrad, zebra_rpc_address) = if let Some(zebrad_and_address) =
spawn_zebrad_for_rpc(network, test_name, test_type, true)?
{
zebrad_and_address
} else {
// Skip the test, we don't have the required cached state
return Ok(());
};
let zebra_rpc_address = zebra_rpc_address.expect("zebra_checkpoints test must have RPC port");
tracing::info!(
?network,
?zebra_rpc_address,
"spawned zebrad, waiting for it to load compiled-in checkpoints...",
);
let last_checkpoint = zebrad.expect_stdout_line_matches(CHECKPOINT_VERIFIER_REGEX)?;
// TODO: do this with a regex?
let (_prefix, last_checkpoint) = last_checkpoint
.split_once("max_checkpoint_height")
.expect("just checked log format");
let (_prefix, last_checkpoint) = last_checkpoint
.split_once('(')
.expect("unexpected log format");
let (last_checkpoint, _suffix) = last_checkpoint
.split_once(')')
.expect("unexpected log format");
tracing::info!(
?network,
?zebra_rpc_address,
?last_checkpoint,
"found zebrad's current last checkpoint",
);
tracing::info!(
?network,
?zebra_rpc_address,
"waiting for zebrad to open its RPC port...",
);
zebrad.expect_stdout_line_matches(&format!("Opened RPC endpoint at {zebra_rpc_address}"))?;
tracing::info!(
?network,
?zebra_rpc_address,
"zebrad opened its RPC port, waiting for it to sync...",
);
zebrad.expect_stdout_line_matches(SYNC_FINISHED_REGEX)?;
let zebra_tip_height = zebrad_tip_height(zebra_rpc_address).await?;
tracing::info!(
?network,
?zebra_rpc_address,
?zebra_tip_height,
?last_checkpoint,
"zebrad synced to the tip, launching zebra-checkpoints...",
);
let zebra_checkpoints =
spawn_zebra_checkpoints_direct(network, test_type, zebra_rpc_address, last_checkpoint)?;
let show_zebrad_logs = env::var(LOG_ZEBRAD_CHECKPOINTS).is_ok();
if !show_zebrad_logs {
tracing::info!(
"zebrad logs are hidden, show them using {LOG_ZEBRAD_CHECKPOINTS}=1 and RUST_LOG=debug"
);
}
tracing::info!(
?network,
?zebra_rpc_address,
?zebra_tip_height,
?last_checkpoint,
"spawned zebra-checkpoints connected to zebrad, checkpoints should appear here...",
);
println!("\n\n");
let (_zebra_checkpoints, _zebrad) = wait_for_zebra_checkpoints_generation(
zebra_checkpoints,
zebrad,
zebra_tip_height,
test_type,
show_zebrad_logs,
)?;
println!("\n\n");
tracing::info!(
?network,
?zebra_tip_height,
?last_checkpoint,
"finished generating Zebra checkpoints",
);
Ok(())
}
/// Spawns a `zebra-checkpoints` instance on `network`, connected to `zebrad_rpc_address`.
///
/// Returns:
/// - `Ok(zebra_checkpoints)` on success,
/// - `Err(_)` if spawning `zebra-checkpoints` fails.
#[tracing::instrument]
pub fn spawn_zebra_checkpoints_direct(
network: Network,
test_type: TestType,
zebrad_rpc_address: SocketAddr,
last_checkpoint: &str,
) -> Result<TestChild<TempDir>> {
let zebrad_rpc_address = zebrad_rpc_address.to_string();
let arguments = args![
"--addr": zebrad_rpc_address,
"--last-checkpoint": last_checkpoint,
];
// TODO: add logs for different kinds of zebra_checkpoints failures
let zebra_checkpoints_failure_messages = PROCESS_FAILURE_MESSAGES
.iter()
.chain(ZEBRA_FAILURE_MESSAGES)
.chain(ZEBRA_CHECKPOINTS_FAILURE_MESSAGES)
.cloned();
let zebra_checkpoints_ignore_messages = NO_MATCHES_REGEX_ITER.iter().cloned();
// Currently unused, but we might put a copy of the checkpoints file in it later
let zebra_checkpoints_dir = testdir()?;
let mut zebra_checkpoints = zebra_checkpoints_dir
.spawn_zebra_checkpoints_child(arguments)?
.with_timeout(test_type.zebrad_timeout())
.with_failure_regex_iter(
zebra_checkpoints_failure_messages,
zebra_checkpoints_ignore_messages,
);
// zebra-checkpoints logs to stderr when it launches.
//
// This log happens very quickly, so it is ok to block for a short while here.
zebra_checkpoints.expect_stderr_line_matches(regex::escape("calculating checkpoints"))?;
Ok(zebra_checkpoints)
}
/// Extension trait for methods on `tempfile::TempDir` for using it as a test
/// directory for `zebra-checkpoints`.
pub trait ZebraCheckpointsTestDirExt: ZebradTestDirExt
where
Self: AsRef<Path> + Sized,
{
/// Spawn `zebra-checkpoints` with `extra_args`, as a child process in this test directory,
/// potentially taking ownership of the tempdir for the duration of the child process.
///
/// By default, launch an instance that connects directly to `zebrad`.
fn spawn_zebra_checkpoints_child(self, extra_args: Arguments) -> Result<TestChild<Self>>;
}
impl ZebraCheckpointsTestDirExt for TempDir {
#[allow(clippy::unwrap_in_result)]
fn spawn_zebra_checkpoints_child(mut self, extra_args: Arguments) -> Result<TestChild<Self>> {
// By default, launch an instance that connects directly to `zebrad`.
let mut args = Arguments::new();
args.set_parameter("--transport", "direct");
// Apply user provided arguments
args.merge_with(extra_args);
// Create debugging info
let temp_dir = self.as_ref().display().to_string();
// Try searching the system $PATH first, that's what the test Docker image uses
let zebra_checkpoints_path = "zebra-checkpoints";
// Make sure we have the right zebra-checkpoints binary.
//
// When we were creating this test, we spent a lot of time debugging a build issue where
// `zebra-checkpoints` had an empty `main()` function. This check makes sure that doesn't
// happen again.
let debug_checkpoints = env::var(LOG_ZEBRAD_CHECKPOINTS).is_ok();
if debug_checkpoints {
let mut args = Arguments::new();
args.set_argument("--help");
let help_dir = testdir()?;
tracing::info!(
?zebra_checkpoints_path,
?args,
?help_dir,
system_path = ?env::var("PATH"),
// TODO: disable when the tests are working well
usr_local_zebra_checkpoints_info = ?fs::metadata("/usr/local/bin/zebra-checkpoints"),
"Trying to launch `zebra-checkpoints --help` by searching system $PATH...",
);
let zebra_checkpoints = help_dir.spawn_child_with_command(zebra_checkpoints_path, args);
if let Err(help_error) = zebra_checkpoints {
tracing::info!(?help_error, "Failed to launch `zebra-checkpoints --help`");
} else {
tracing::info!("Launched `zebra-checkpoints --help`, output is:");
let mut zebra_checkpoints = zebra_checkpoints.unwrap();
let mut output_is_empty = true;
// Get the help output
while zebra_checkpoints.wait_for_stdout_line(None) {
output_is_empty = false;
}
while zebra_checkpoints.wait_for_stderr_line(None) {
output_is_empty = false;
}
if output_is_empty {
tracing::info!(
"`zebra-checkpoints --help` did not log any output. \
Is the binary being built during tests? Are its required-features active?"
);
}
}
}
// Try the `zebra-checkpoints` binary the Docker image copied just after it built the tests.
tracing::info!(
?zebra_checkpoints_path,
?args,
?temp_dir,
system_path = ?env::var("PATH"),
// TODO: disable when the tests are working well
usr_local_zebra_checkpoints_info = ?fs::metadata("/usr/local/bin/zebra-checkpoints"),
"Trying to launch zebra-checkpoints by searching system $PATH...",
);
let zebra_checkpoints = self.spawn_child_with_command(zebra_checkpoints_path, args.clone());
let Err(system_path_error) = zebra_checkpoints else {
return zebra_checkpoints;
};
// Fall back to assuming zebra-checkpoints is in the same directory as zebrad.
let mut zebra_checkpoints_path: PathBuf = env!("CARGO_BIN_EXE_zebrad").into();
assert!(
zebra_checkpoints_path.pop(),
"must have at least one path component",
);
zebra_checkpoints_path.push("zebra-checkpoints");
if zebra_checkpoints_path.exists() {
// Create a new temporary directory, because the old one has been used up.
//
// TODO: instead, return the TempDir from spawn_child_with_command() on error.
self = testdir()?;
// Create debugging info
let temp_dir = self.as_ref().display().to_string();
tracing::info!(
?zebra_checkpoints_path,
?args,
?temp_dir,
?system_path_error,
// TODO: disable when the tests are working well
zebra_checkpoints_info = ?fs::metadata(&zebra_checkpoints_path),
"Launching from system $PATH failed, \
trying to launch zebra-checkpoints from cargo path...",
);
self.spawn_child_with_command(
zebra_checkpoints_path.to_str().expect(
"internal test harness error: path is not UTF-8 \
TODO: change spawn child methods to take &OsStr not &str",
),
args,
)
} else {
tracing::info!(
cargo_path = ?zebra_checkpoints_path,
?system_path_error,
// TODO: disable when the tests are working well
cargo_path_info = ?fs::metadata(&zebra_checkpoints_path),
"Launching from system $PATH failed, \
and zebra-checkpoints cargo path does not exist...",
);
// Return the original error
Err(system_path_error)
}
}
}
/// Wait for `zebra-checkpoints` to generate checkpoints, clearing Zebra's logs at the same time.
#[tracing::instrument]
pub fn wait_for_zebra_checkpoints_generation<
P: ZebradTestDirExt + std::fmt::Debug + std::marker::Send + 'static,
>(
mut zebra_checkpoints: TestChild<TempDir>,
mut zebrad: TestChild<P>,
zebra_tip_height: Height,
test_type: TestType,
show_zebrad_logs: bool,
) -> Result<(TestChild<TempDir>, TestChild<P>)> {
let last_checkpoint_gap = HeightDiff::try_from(MIN_TRANSPARENT_COINBASE_MATURITY)
.expect("constant fits in HeightDiff")
+ HeightDiff::try_from(MAX_CHECKPOINT_HEIGHT_GAP).expect("constant fits in HeightDiff");
let expected_final_checkpoint_height =
(zebra_tip_height - last_checkpoint_gap).expect("network tip is high enough");
let is_zebra_checkpoints_finished = AtomicBool::new(false);
let is_zebra_checkpoints_finished = &is_zebra_checkpoints_finished;
// Check Zebra's logs for errors.
//
// Checkpoint generation can take a long time, so we need to check `zebrad` for errors
// in parallel.
let zebrad_mut = &mut zebrad;
let zebrad_wait_fn = || -> Result<_> {
tracing::debug!(
?test_type,
"zebrad is waiting for zebra-checkpoints to generate checkpoints...",
);
while !is_zebra_checkpoints_finished.load(Ordering::SeqCst) {
// Just keep silently checking the Zebra logs for errors,
// so the checkpoint list can be copied from the output.
//
// Make sure the sync is still finished, this is logged every minute or so.
if env::var(LOG_ZEBRAD_CHECKPOINTS).is_ok() {
zebrad_mut.expect_stdout_line_matches(SYNC_FINISHED_REGEX)?;
} else {
zebrad_mut.expect_stdout_line_matches_silent(SYNC_FINISHED_REGEX)?;
}
}
Ok(zebrad_mut)
};
// Wait until `zebra-checkpoints` has generated a full set of checkpoints.
// Also checks `zebra-checkpoints` logs for errors.
//
// Checkpoints generation can take a long time, so we need to run it in parallel with `zebrad`.
let zebra_checkpoints_mut = &mut zebra_checkpoints;
let zebra_checkpoints_wait_fn = || -> Result<_> {
tracing::debug!(
?test_type,
"waiting for zebra_checkpoints to generate checkpoints...",
);
// zebra-checkpoints does not log anything when it finishes, it just prints checkpoints.
//
// We know that checkpoints are always less than 1000 blocks apart, but they can happen
// anywhere in that range due to block sizes. So we ignore the last 3 digits of the height.
let expected_final_checkpoint_prefix = expected_final_checkpoint_height.0 / 1000;
// Mainnet and testnet checkpoints always have at least one leading zero in their hash.
let expected_final_checkpoint =
format!("{expected_final_checkpoint_prefix}[0-9][0-9][0-9] 0");
zebra_checkpoints_mut.expect_stdout_line_matches(&expected_final_checkpoint)?;
// Write the rest of the checkpoints: there can be 0-2 more checkpoints.
while zebra_checkpoints_mut.wait_for_stdout_line(None) {}
// Tell the other thread that `zebra_checkpoints` has finished
is_zebra_checkpoints_finished.store(true, Ordering::SeqCst);
Ok(zebra_checkpoints_mut)
};
// Run both threads in parallel, automatically propagating any panics to this thread.
std::thread::scope(|s| {
// Launch the sync-waiting threads
let zebrad_thread = s.spawn(|| {
zebrad_wait_fn().expect("test failed while waiting for zebrad to sync");
});
let zebra_checkpoints_thread = s.spawn(|| {
let zebra_checkpoints_result = zebra_checkpoints_wait_fn();
is_zebra_checkpoints_finished.store(true, Ordering::SeqCst);
zebra_checkpoints_result
.expect("test failed while waiting for zebra_checkpoints to sync.");
});
// Mark the sync-waiting threads as finished if they fail or panic.
// This tells the other thread that it can exit.
//
// TODO: use `panic::catch_unwind()` instead,
// when `&mut zebra_test::command::TestChild<TempDir>` is unwind-safe
s.spawn(|| {
let zebrad_result = zebrad_thread.join();
zebrad_result.expect("test panicked or failed while waiting for zebrad to sync");
});
s.spawn(|| {
let zebra_checkpoints_result = zebra_checkpoints_thread.join();
is_zebra_checkpoints_finished.store(true, Ordering::SeqCst);
zebra_checkpoints_result
.expect("test panicked or failed while waiting for zebra_checkpoints to sync");
});
});
Ok((zebra_checkpoints, zebrad))
}
/// Returns an approximate `zebrad` tip height, using JSON-RPC.
#[tracing::instrument]
pub async fn zebrad_tip_height(zebra_rpc_address: SocketAddr) -> Result<Height> {
let client = RpcRequestClient::new(zebra_rpc_address);
let zebrad_blockchain_info = client
.text_from_call("getblockchaininfo", "[]".to_string())
.await?;
let zebrad_blockchain_info: serde_json::Value = serde_json::from_str(&zebrad_blockchain_info)?;
let zebrad_tip_height = zebrad_blockchain_info["result"]["blocks"]
.try_into_height()
.expect("unexpected block height: invalid Height value");
Ok(zebrad_tip_height)
}