736 lines
24 KiB
Rust
736 lines
24 KiB
Rust
use crate::snapshot_package::SnapshotPackage;
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use bincode::serialize_into;
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use bzip2::bufread::BzDecoder;
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use fs_extra::dir::CopyOptions;
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use log::*;
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use solana_measure::measure::Measure;
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use solana_runtime::bank::{
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self, deserialize_from_snapshot, Bank, BankSlotDelta, MAX_SNAPSHOT_DATA_FILE_SIZE,
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};
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use solana_sdk::clock::Slot;
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use std::{
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cmp::Ordering,
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env,
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fs::{self, File},
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io::{BufReader, BufWriter, Error as IOError, ErrorKind, Read, Seek, SeekFrom, Write},
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path::{Path, PathBuf},
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process::ExitStatus,
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};
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use tar::Archive;
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use tempfile::TempDir;
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use thiserror::Error;
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pub const SNAPSHOT_STATUS_CACHE_FILE_NAME: &str = "status_cache";
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pub const TAR_SNAPSHOTS_DIR: &str = "snapshots";
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pub const TAR_ACCOUNTS_DIR: &str = "accounts";
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pub const TAR_VERSION_FILE: &str = "version";
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#[derive(PartialEq, Ord, Eq, Debug)]
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pub struct SlotSnapshotPaths {
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pub slot: Slot,
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pub snapshot_file_path: PathBuf,
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}
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#[derive(Error, Debug)]
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pub enum SnapshotError {
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#[error("I/O error")]
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IO(#[from] std::io::Error),
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#[error("serialization error")]
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Serialize(#[from] Box<bincode::ErrorKind>),
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#[error("file system error")]
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FsExtra(#[from] fs_extra::error::Error),
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#[error("archive generation failure {0}")]
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ArchiveGenerationFailure(ExitStatus),
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#[error("storage path symlink is invalid")]
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StoragePathSymlinkInvalid,
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}
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pub type Result<T> = std::result::Result<T, SnapshotError>;
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impl PartialOrd for SlotSnapshotPaths {
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fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
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Some(self.slot.cmp(&other.slot))
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}
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}
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impl SlotSnapshotPaths {
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fn copy_snapshot_directory<P: AsRef<Path>>(&self, snapshot_hardlink_dir: P) -> Result<()> {
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// Create a new directory in snapshot_hardlink_dir
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let new_slot_hardlink_dir = snapshot_hardlink_dir.as_ref().join(self.slot.to_string());
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let _ = fs::remove_dir_all(&new_slot_hardlink_dir);
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fs::create_dir_all(&new_slot_hardlink_dir)?;
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// Copy the snapshot
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fs::copy(
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&self.snapshot_file_path,
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&new_slot_hardlink_dir.join(self.slot.to_string()),
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)?;
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Ok(())
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}
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}
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pub fn package_snapshot<P: AsRef<Path>, Q: AsRef<Path>>(
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bank: &Bank,
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snapshot_files: &SlotSnapshotPaths,
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snapshot_package_output_file: P,
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snapshot_path: Q,
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slots_to_snapshot: &[Slot],
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) -> Result<SnapshotPackage> {
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// Hard link all the snapshots we need for this package
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let snapshot_hard_links_dir = tempfile::tempdir_in(snapshot_path)?;
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// Get a reference to all the relevant AccountStorageEntries
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let account_storage_entries: Vec<_> = bank
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.rc
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.get_rooted_storage_entries()
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.into_iter()
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.filter(|x| x.slot_id() <= bank.slot())
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.collect();
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// Create a snapshot package
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info!(
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"Snapshot for bank: {} has {} account storage entries",
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bank.slot(),
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account_storage_entries.len()
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);
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// Any errors from this point on will cause the above SnapshotPackage to drop, clearing
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// any temporary state created for the SnapshotPackage (like the snapshot_hard_links_dir)
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snapshot_files.copy_snapshot_directory(snapshot_hard_links_dir.path())?;
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let package = SnapshotPackage::new(
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bank.slot(),
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bank.src.slot_deltas(slots_to_snapshot),
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snapshot_hard_links_dir,
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account_storage_entries,
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snapshot_package_output_file.as_ref().to_path_buf(),
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bank.hash(),
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);
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Ok(package)
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}
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pub fn archive_snapshot_package(snapshot_package: &SnapshotPackage) -> Result<()> {
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info!(
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"Generating snapshot archive for slot {}",
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snapshot_package.root
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);
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serialize_status_cache(
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snapshot_package.root,
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&snapshot_package.slot_deltas,
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&snapshot_package.snapshot_links,
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)?;
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let mut timer = Measure::start("snapshot_package-package_snapshots");
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let tar_dir = snapshot_package
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.tar_output_file
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.parent()
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.expect("Tar output path is invalid");
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fs::create_dir_all(tar_dir)?;
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// Create the staging directories
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let staging_dir = TempDir::new()?;
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let staging_accounts_dir = staging_dir.path().join(TAR_ACCOUNTS_DIR);
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let staging_snapshots_dir = staging_dir.path().join(TAR_SNAPSHOTS_DIR);
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let staging_version_file = staging_dir.path().join(TAR_VERSION_FILE);
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fs::create_dir_all(&staging_accounts_dir)?;
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// Add the snapshots to the staging directory
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symlink::symlink_dir(
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snapshot_package.snapshot_links.path(),
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&staging_snapshots_dir,
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)?;
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// Add the AppendVecs into the compressible list
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for storage in &snapshot_package.storage_entries {
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storage.flush()?;
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let storage_path = storage.get_path();
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let output_path = staging_accounts_dir.join(
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storage_path
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.file_name()
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.expect("Invalid AppendVec file path"),
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);
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// `storage_path` - The file path where the AppendVec itself is located
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// `output_path` - The directory where the AppendVec will be placed in the staging directory.
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let storage_path =
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fs::canonicalize(storage_path).expect("Could not get absolute path for accounts");
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symlink::symlink_dir(storage_path, &output_path)?;
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if !output_path.is_file() {
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return Err(SnapshotError::StoragePathSymlinkInvalid);
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}
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}
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// Write version file
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{
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let snapshot_version = format!("{}\n", env!("CARGO_PKG_VERSION"));
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let mut f = std::fs::File::create(staging_version_file)?;
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//f.write_all(&snapshot_version.to_string().into_bytes())?;
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f.write_all(&snapshot_version.into_bytes())?;
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}
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let archive_compress_options = if is_snapshot_compression_disabled() {
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""
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} else {
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"j"
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};
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let archive_options = format!("{}cfhS", archive_compress_options);
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// Tar the staging directory into the archive at `archive_path`
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let archive_path = tar_dir.join("new_state.tar.bz2");
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let args = vec![
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archive_options.as_str(),
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archive_path.to_str().unwrap(),
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"-C",
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staging_dir.path().to_str().unwrap(),
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TAR_ACCOUNTS_DIR,
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TAR_SNAPSHOTS_DIR,
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TAR_VERSION_FILE,
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];
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let output = std::process::Command::new("tar").args(&args).output()?;
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if !output.status.success() {
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warn!("tar command failed with exit code: {}", output.status);
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use std::str::from_utf8;
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info!("tar stdout: {}", from_utf8(&output.stdout).unwrap_or("?"));
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info!("tar stderr: {}", from_utf8(&output.stderr).unwrap_or("?"));
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return Err(SnapshotError::ArchiveGenerationFailure(output.status));
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}
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// Once everything is successful, overwrite the previous tarball so that other validators
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// can fetch this newly packaged snapshot
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let metadata = fs::metadata(&archive_path)?;
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fs::rename(&archive_path, &snapshot_package.tar_output_file)?;
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timer.stop();
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info!(
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"Successfully created tarball. slot: {}, elapsed ms: {}, size={}",
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snapshot_package.root,
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timer.as_ms(),
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metadata.len()
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);
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datapoint_info!(
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"snapshot-package",
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("slot", snapshot_package.root, i64),
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("duration_ms", timer.as_ms(), i64),
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("size", metadata.len(), i64)
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);
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Ok(())
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}
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pub fn get_snapshot_paths<P: AsRef<Path>>(snapshot_path: P) -> Vec<SlotSnapshotPaths>
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where
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P: std::fmt::Debug,
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{
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match fs::read_dir(&snapshot_path) {
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Ok(paths) => {
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let mut names = paths
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.filter_map(|entry| {
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entry.ok().and_then(|e| {
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e.path()
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.file_name()
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.and_then(|n| n.to_str().map(|s| s.parse::<u64>().ok()))
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.unwrap_or(None)
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})
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})
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.map(|slot| {
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let snapshot_path = snapshot_path.as_ref().join(slot.to_string());
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SlotSnapshotPaths {
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slot,
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snapshot_file_path: snapshot_path.join(get_snapshot_file_name(slot)),
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}
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})
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.collect::<Vec<SlotSnapshotPaths>>();
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names.sort();
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names
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}
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Err(err) => {
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info!(
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"Unable to read snapshot directory {:?}: {}",
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snapshot_path, err
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);
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vec![]
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}
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}
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}
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pub fn serialize_snapshot_data_file<F>(
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data_file_path: &Path,
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maximum_file_size: u64,
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mut serializer: F,
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) -> Result<u64>
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where
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F: FnMut(&mut BufWriter<File>) -> Result<()>,
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{
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let data_file = File::create(data_file_path)?;
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let mut data_file_stream = BufWriter::new(data_file);
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serializer(&mut data_file_stream)?;
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data_file_stream.flush()?;
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let consumed_size = data_file_stream.seek(SeekFrom::Current(0))?;
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if consumed_size > maximum_file_size {
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let error_message = format!(
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"too large snapshot data file to serialize: {:?} has {} bytes",
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data_file_path, consumed_size
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);
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return Err(get_io_error(&error_message));
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}
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Ok(consumed_size)
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}
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pub fn deserialize_snapshot_data_file<F, T>(
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data_file_path: &Path,
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maximum_file_size: u64,
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mut deserializer: F,
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) -> Result<T>
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where
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F: FnMut(&mut BufReader<File>) -> Result<T>,
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{
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let file_size = fs::metadata(&data_file_path)?.len();
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if file_size > maximum_file_size {
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let error_message = format!(
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"too large snapshot data file to deserialize: {:?} has {} bytes",
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data_file_path, file_size
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);
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return Err(get_io_error(&error_message));
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}
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let data_file = File::open(data_file_path)?;
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let mut data_file_stream = BufReader::new(data_file);
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let ret = deserializer(&mut data_file_stream)?;
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let consumed_size = data_file_stream.seek(SeekFrom::Current(0))?;
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if file_size != consumed_size {
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let error_message = format!(
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"invalid snapshot data file: {:?} has {} bytes, however consumed {} bytes to deserialize",
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data_file_path, file_size, consumed_size
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);
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return Err(get_io_error(&error_message));
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}
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Ok(ret)
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}
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pub fn add_snapshot<P: AsRef<Path>>(snapshot_path: P, bank: &Bank) -> Result<SlotSnapshotPaths> {
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bank.purge_zero_lamport_accounts();
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let slot = bank.slot();
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// snapshot_path/slot
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let slot_snapshot_dir = get_bank_snapshot_dir(snapshot_path, slot);
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fs::create_dir_all(slot_snapshot_dir.clone())?;
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// the bank snapshot is stored as snapshot_path/slot/slot
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let snapshot_bank_file_path = slot_snapshot_dir.join(get_snapshot_file_name(slot));
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info!(
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"Creating snapshot for slot {}, path: {:?}",
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slot, snapshot_bank_file_path,
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);
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let mut bank_serialize = Measure::start("bank-serialize-ms");
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let consumed_size = serialize_snapshot_data_file(
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&snapshot_bank_file_path,
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MAX_SNAPSHOT_DATA_FILE_SIZE,
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|stream| {
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serialize_into(stream.by_ref(), &*bank)?;
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serialize_into(stream.by_ref(), &bank.rc)?;
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Ok(())
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},
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)?;
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bank_serialize.stop();
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// Monitor sizes because they're capped to MAX_SNAPSHOT_DATA_FILE_SIZE
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datapoint_info!(
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"snapshot-bank-file",
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("slot", slot, i64),
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("size", consumed_size, i64)
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);
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inc_new_counter_info!("bank-serialize-ms", bank_serialize.as_ms() as usize);
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info!(
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"{} for slot {} at {:?}",
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bank_serialize, slot, snapshot_bank_file_path,
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);
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Ok(SlotSnapshotPaths {
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slot,
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snapshot_file_path: snapshot_bank_file_path,
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})
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}
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pub fn serialize_status_cache(
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slot: Slot,
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slot_deltas: &[BankSlotDelta],
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snapshot_links: &TempDir,
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) -> Result<()> {
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// the status cache is stored as snapshot_path/status_cache
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let snapshot_status_cache_file_path =
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snapshot_links.path().join(SNAPSHOT_STATUS_CACHE_FILE_NAME);
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let mut status_cache_serialize = Measure::start("status_cache_serialize-ms");
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let consumed_size = serialize_snapshot_data_file(
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&snapshot_status_cache_file_path,
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MAX_SNAPSHOT_DATA_FILE_SIZE,
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|stream| {
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serialize_into(stream, slot_deltas)?;
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Ok(())
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},
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)?;
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status_cache_serialize.stop();
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|
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// Monitor sizes because they're capped to MAX_SNAPSHOT_DATA_FILE_SIZE
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datapoint_info!(
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"snapshot-status-cache-file",
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("slot", slot, i64),
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("size", consumed_size, i64)
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);
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inc_new_counter_info!(
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"serialize-status-cache-ms",
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status_cache_serialize.as_ms() as usize
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);
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Ok(())
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}
|
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|
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pub fn remove_snapshot<P: AsRef<Path>>(slot: Slot, snapshot_path: P) -> Result<()> {
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let slot_snapshot_dir = get_bank_snapshot_dir(&snapshot_path, slot);
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// Remove the snapshot directory for this slot
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fs::remove_dir_all(slot_snapshot_dir)?;
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Ok(())
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}
|
|
|
|
pub fn bank_slot_from_archive<P: AsRef<Path>>(snapshot_tar: P) -> Result<Slot> {
|
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let tempdir = tempfile::TempDir::new()?;
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untar_snapshot_in(&snapshot_tar, &tempdir)?;
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let unpacked_snapshots_dir = tempdir.path().join(TAR_SNAPSHOTS_DIR);
|
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let local_account_paths = vec![tempdir.path().join("account_dummy")];
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let unpacked_accounts_dir = tempdir.path().join(TAR_ACCOUNTS_DIR);
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let snapshot_paths = get_snapshot_paths(&unpacked_snapshots_dir);
|
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let last_root_paths = snapshot_paths
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.last()
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.ok_or_else(|| get_io_error("No snapshots found in snapshots directory"))?;
|
|
let bank = deserialize_snapshot_data_file(
|
|
&last_root_paths.snapshot_file_path,
|
|
MAX_SNAPSHOT_DATA_FILE_SIZE,
|
|
|stream| {
|
|
let bank: Bank = deserialize_from_snapshot(stream.by_ref())?;
|
|
bank.rc.accounts_from_stream(
|
|
stream.by_ref(),
|
|
&local_account_paths,
|
|
&unpacked_accounts_dir,
|
|
)?;
|
|
Ok(bank)
|
|
},
|
|
)?;
|
|
Ok(bank.slot())
|
|
}
|
|
|
|
pub fn bank_from_archive<P: AsRef<Path>>(
|
|
account_paths: &[PathBuf],
|
|
snapshot_path: &PathBuf,
|
|
snapshot_tar: P,
|
|
) -> Result<Bank> {
|
|
// Untar the snapshot into a temp directory under `snapshot_config.snapshot_path()`
|
|
let unpack_dir = tempfile::tempdir_in(snapshot_path)?;
|
|
untar_snapshot_in(&snapshot_tar, &unpack_dir)?;
|
|
|
|
let mut measure = Measure::start("bank rebuild from snapshot");
|
|
let unpacked_accounts_dir = unpack_dir.as_ref().join(TAR_ACCOUNTS_DIR);
|
|
let unpacked_snapshots_dir = unpack_dir.as_ref().join(TAR_SNAPSHOTS_DIR);
|
|
let unpacked_version_file = unpack_dir.as_ref().join(TAR_VERSION_FILE);
|
|
|
|
let snapshot_version = if let Ok(mut f) = File::open(unpacked_version_file) {
|
|
let mut snapshot_version = String::new();
|
|
f.read_to_string(&mut snapshot_version)?;
|
|
snapshot_version
|
|
} else {
|
|
// Once v0.23.x is deployed, this default can be removed and snapshots without a version
|
|
// file can be rejected
|
|
String::from("0.22.3")
|
|
};
|
|
|
|
let bank = rebuild_bank_from_snapshots(
|
|
snapshot_version.trim(),
|
|
account_paths,
|
|
&unpacked_snapshots_dir,
|
|
unpacked_accounts_dir,
|
|
)?;
|
|
|
|
if !bank.verify_snapshot_bank() {
|
|
panic!("Snapshot bank for slot {} failed to verify", bank.slot());
|
|
}
|
|
measure.stop();
|
|
info!("{}", measure);
|
|
|
|
// Move the unpacked snapshots into `snapshot_path`
|
|
let dir_files = fs::read_dir(&unpacked_snapshots_dir).unwrap_or_else(|err| {
|
|
panic!(
|
|
"Invalid snapshot path {:?}: {}",
|
|
unpacked_snapshots_dir, err
|
|
)
|
|
});
|
|
let paths: Vec<PathBuf> = dir_files
|
|
.filter_map(|entry| entry.ok().map(|e| e.path()))
|
|
.collect();
|
|
let mut copy_options = CopyOptions::new();
|
|
copy_options.overwrite = true;
|
|
fs_extra::move_items(&paths, &snapshot_path, ©_options)?;
|
|
|
|
Ok(bank)
|
|
}
|
|
|
|
fn is_snapshot_compression_disabled() -> bool {
|
|
if let Ok(flag) = env::var("SOLANA_DISABLE_SNAPSHOT_COMPRESSION") {
|
|
!(flag == "0" || flag == "false")
|
|
} else {
|
|
false
|
|
}
|
|
}
|
|
|
|
pub fn get_snapshot_archive_path<P: AsRef<Path>>(snapshot_output_dir: P) -> PathBuf {
|
|
snapshot_output_dir.as_ref().join("snapshot.tar.bz2")
|
|
}
|
|
|
|
pub fn untar_snapshot_in<P: AsRef<Path>, Q: AsRef<Path>>(
|
|
snapshot_tar: P,
|
|
unpack_dir: Q,
|
|
) -> Result<()> {
|
|
let mut measure = Measure::start("snapshot untar");
|
|
let tar_bz2 = File::open(&snapshot_tar)?;
|
|
let tar = BzDecoder::new(BufReader::new(tar_bz2));
|
|
let mut archive = Archive::new(tar);
|
|
if !is_snapshot_compression_disabled() {
|
|
archive.unpack(&unpack_dir)?;
|
|
} else if let Err(e) = archive.unpack(&unpack_dir) {
|
|
warn!(
|
|
"Trying to unpack as uncompressed tar because an error occured: {:?}",
|
|
e
|
|
);
|
|
let tar_bz2 = File::open(snapshot_tar)?;
|
|
let tar = BufReader::new(tar_bz2);
|
|
let mut archive = Archive::new(tar);
|
|
archive.unpack(&unpack_dir)?;
|
|
}
|
|
measure.stop();
|
|
info!("{}", measure);
|
|
Ok(())
|
|
}
|
|
|
|
fn rebuild_bank_from_snapshots<P>(
|
|
snapshot_version: &str,
|
|
account_paths: &[PathBuf],
|
|
unpacked_snapshots_dir: &PathBuf,
|
|
append_vecs_path: P,
|
|
) -> Result<Bank>
|
|
where
|
|
P: AsRef<Path>,
|
|
{
|
|
info!("snapshot version: {}", snapshot_version);
|
|
|
|
let mut snapshot_paths = get_snapshot_paths(&unpacked_snapshots_dir);
|
|
if snapshot_paths.len() > 1 {
|
|
return Err(get_io_error("invalid snapshot format"));
|
|
}
|
|
let root_paths = snapshot_paths
|
|
.pop()
|
|
.ok_or_else(|| get_io_error("No snapshots found in snapshots directory"))?;
|
|
|
|
info!("Loading bank from {:?}", &root_paths.snapshot_file_path);
|
|
let bank = deserialize_snapshot_data_file(
|
|
&root_paths.snapshot_file_path,
|
|
MAX_SNAPSHOT_DATA_FILE_SIZE,
|
|
|stream| {
|
|
let mut bank: Bank = match snapshot_version {
|
|
env!("CARGO_PKG_VERSION") => deserialize_from_snapshot(stream.by_ref())?,
|
|
_ => {
|
|
return Err(get_io_error(&format!(
|
|
"unsupported snapshot version: {}",
|
|
snapshot_version
|
|
)));
|
|
}
|
|
};
|
|
info!("Rebuilding accounts...");
|
|
bank.set_bank_rc(
|
|
bank::BankRc::new(account_paths.to_vec(), 0, bank.slot()),
|
|
bank::StatusCacheRc::default(),
|
|
);
|
|
bank.rc
|
|
.accounts_from_stream(stream.by_ref(), account_paths, &append_vecs_path)?;
|
|
Ok(bank)
|
|
},
|
|
)?;
|
|
|
|
let status_cache_path = unpacked_snapshots_dir.join(SNAPSHOT_STATUS_CACHE_FILE_NAME);
|
|
let slot_deltas = deserialize_snapshot_data_file(
|
|
&status_cache_path,
|
|
MAX_SNAPSHOT_DATA_FILE_SIZE,
|
|
|stream| {
|
|
info!("Rebuilding status cache...");
|
|
let slot_deltas: Vec<BankSlotDelta> = deserialize_from_snapshot(stream)?;
|
|
Ok(slot_deltas)
|
|
},
|
|
)?;
|
|
|
|
bank.src.append(&slot_deltas);
|
|
|
|
info!("Loaded bank for slot: {}", bank.slot());
|
|
Ok(bank)
|
|
}
|
|
|
|
fn get_snapshot_file_name(slot: Slot) -> String {
|
|
slot.to_string()
|
|
}
|
|
|
|
fn get_bank_snapshot_dir<P: AsRef<Path>>(path: P, slot: Slot) -> PathBuf {
|
|
path.as_ref().join(slot.to_string())
|
|
}
|
|
|
|
fn get_io_error(error: &str) -> SnapshotError {
|
|
warn!("Snapshot Error: {:?}", error);
|
|
SnapshotError::IO(IOError::new(ErrorKind::Other, error))
|
|
}
|
|
|
|
pub fn verify_snapshot_archive<P, Q, R>(
|
|
snapshot_tar: P,
|
|
snapshots_to_verify: Q,
|
|
storages_to_verify: R,
|
|
) where
|
|
P: AsRef<Path>,
|
|
Q: AsRef<Path>,
|
|
R: AsRef<Path>,
|
|
{
|
|
let temp_dir = tempfile::TempDir::new().unwrap();
|
|
let unpack_dir = temp_dir.path();
|
|
untar_snapshot_in(snapshot_tar, &unpack_dir).unwrap();
|
|
|
|
// Check snapshots are the same
|
|
let unpacked_snapshots = unpack_dir.join(&TAR_SNAPSHOTS_DIR);
|
|
assert!(!dir_diff::is_different(&snapshots_to_verify, unpacked_snapshots).unwrap());
|
|
|
|
// Check the account entries are the same
|
|
let unpacked_accounts = unpack_dir.join(&TAR_ACCOUNTS_DIR);
|
|
assert!(!dir_diff::is_different(&storages_to_verify, unpacked_accounts).unwrap());
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod tests {
|
|
use super::*;
|
|
use bincode::{deserialize_from, serialize_into};
|
|
use matches::assert_matches;
|
|
use std::mem::size_of;
|
|
|
|
#[test]
|
|
fn test_serialize_snapshot_data_file_under_limit() {
|
|
let temp_dir = tempfile::TempDir::new().unwrap();
|
|
let expected_consumed_size = size_of::<u32>() as u64;
|
|
let consumed_size = serialize_snapshot_data_file(
|
|
&temp_dir.path().join("data-file"),
|
|
expected_consumed_size,
|
|
|stream| {
|
|
serialize_into(stream, &2323_u32)?;
|
|
Ok(())
|
|
},
|
|
)
|
|
.unwrap();
|
|
assert_eq!(consumed_size, expected_consumed_size);
|
|
}
|
|
|
|
#[test]
|
|
fn test_serialize_snapshot_data_file_over_limit() {
|
|
let temp_dir = tempfile::TempDir::new().unwrap();
|
|
let expected_consumed_size = size_of::<u32>() as u64;
|
|
let result = serialize_snapshot_data_file(
|
|
&temp_dir.path().join("data-file"),
|
|
expected_consumed_size - 1,
|
|
|stream| {
|
|
serialize_into(stream, &2323_u32)?;
|
|
Ok(())
|
|
},
|
|
);
|
|
assert_matches!(result, Err(SnapshotError::IO(ref message)) if message.to_string().starts_with("too large snapshot data file to serialize"));
|
|
}
|
|
|
|
#[test]
|
|
fn test_deserialize_snapshot_data_file_under_limit() {
|
|
let expected_data = 2323_u32;
|
|
let expected_consumed_size = size_of::<u32>() as u64;
|
|
|
|
let temp_dir = tempfile::TempDir::new().unwrap();
|
|
serialize_snapshot_data_file(
|
|
&temp_dir.path().join("data-file"),
|
|
expected_consumed_size,
|
|
|stream| {
|
|
serialize_into(stream, &expected_data)?;
|
|
Ok(())
|
|
},
|
|
)
|
|
.unwrap();
|
|
|
|
let actual_data = deserialize_snapshot_data_file(
|
|
&temp_dir.path().join("data-file"),
|
|
expected_consumed_size,
|
|
|stream| Ok(deserialize_from::<_, u32>(stream)?),
|
|
)
|
|
.unwrap();
|
|
assert_eq!(actual_data, expected_data);
|
|
}
|
|
|
|
#[test]
|
|
fn test_deserialize_snapshot_data_file_over_limit() {
|
|
let expected_data = 2323_u32;
|
|
let expected_consumed_size = size_of::<u32>() as u64;
|
|
|
|
let temp_dir = tempfile::TempDir::new().unwrap();
|
|
serialize_snapshot_data_file(
|
|
&temp_dir.path().join("data-file"),
|
|
expected_consumed_size,
|
|
|stream| {
|
|
serialize_into(stream, &expected_data)?;
|
|
Ok(())
|
|
},
|
|
)
|
|
.unwrap();
|
|
|
|
let result = deserialize_snapshot_data_file(
|
|
&temp_dir.path().join("data-file"),
|
|
expected_consumed_size - 1,
|
|
|stream| Ok(deserialize_from::<_, u32>(stream)?),
|
|
);
|
|
assert_matches!(result, Err(SnapshotError::IO(ref message)) if message.to_string().starts_with("too large snapshot data file to deserialize"));
|
|
}
|
|
|
|
#[test]
|
|
fn test_deserialize_snapshot_data_file_extra_data() {
|
|
let expected_data = 2323_u32;
|
|
let expected_consumed_size = size_of::<u32>() as u64;
|
|
|
|
let temp_dir = tempfile::TempDir::new().unwrap();
|
|
serialize_snapshot_data_file(
|
|
&temp_dir.path().join("data-file"),
|
|
expected_consumed_size * 2,
|
|
|stream| {
|
|
serialize_into(stream.by_ref(), &expected_data)?;
|
|
serialize_into(stream.by_ref(), &expected_data)?;
|
|
Ok(())
|
|
},
|
|
)
|
|
.unwrap();
|
|
|
|
let result = deserialize_snapshot_data_file(
|
|
&temp_dir.path().join("data-file"),
|
|
expected_consumed_size * 2,
|
|
|stream| Ok(deserialize_from::<_, u32>(stream)?),
|
|
);
|
|
assert_matches!(result, Err(SnapshotError::IO(ref message)) if message.to_string().starts_with("invalid snapshot data file"));
|
|
}
|
|
}
|