Files
yoi/crates/worker-runtime/src/retention.rs
T

1539 lines
54 KiB
Rust

//! Runtime-owned execution of Backend-resolved Worker retention dispositions.
//!
//! This boundary deliberately accepts only stable ids and resolved dispositions.
//! Host paths and provider handles never cross it.
use crate::error::RuntimeError;
use crate::identity::WorkerId;
use serde::{Deserialize, Serialize};
use sha2::{Digest, Sha256};
use std::collections::BTreeSet;
use std::fs::{self, File, OpenOptions};
use std::io::{Read, Write};
use std::path::{Path, PathBuf};
use std::sync::atomic::{AtomicU64, Ordering};
const ARCHIVE_SCHEMA_VERSION: u32 = 1;
const OPERATION_SCHEMA_VERSION: u32 = 1;
const RETENTION_LOCK: &str = ".worker-retention.lock";
static NEXT_TEMP_SEQUENCE: AtomicU64 = AtomicU64::new(1);
#[derive(Clone, Copy, Debug, PartialEq, Eq, Serialize, Deserialize)]
#[serde(rename_all = "snake_case")]
pub enum SessionDisposition {
Archive,
Purge,
}
#[derive(Clone, Copy, Debug, PartialEq, Eq, Serialize, Deserialize)]
#[serde(rename_all = "snake_case")]
pub enum DiagnosticsDisposition {
Purge,
/// The Backend catalog owns the expiry. Runtime keeps only bounded stdout/stderr
/// evidence and never mixes it into the Session archive.
Retain,
}
#[derive(Clone, Debug, PartialEq, Eq, Serialize, Deserialize)]
pub struct WorkerRetentionInventory {
pub workspace_id: String,
pub runtime_id: String,
pub worker_id: WorkerId,
pub run_generation: u64,
pub session_id: Option<String>,
pub segment_ids: Vec<String>,
pub session_bytes: u64,
pub diagnostics_bytes: u64,
}
#[derive(Clone, Debug, PartialEq, Eq, Serialize)]
pub struct RuntimeWorkerAggregateDiagnostic {
worker_id: String,
category: String,
detail: String,
}
impl RuntimeWorkerAggregateDiagnostic {
pub fn worker_id(&self) -> &str {
&self.worker_id
}
pub fn category(&self) -> &str {
&self.category
}
pub fn detail(&self) -> &str {
&self.detail
}
}
/// Opaque host-derived inventory snapshot. Callers can inspect but cannot
/// construct or alter the Runtime/Workspace scope used by reconciliation.
#[derive(Clone, Debug, PartialEq, Eq, Serialize)]
pub struct WorkerRetentionInventorySnapshot {
workspace_id: String,
runtime_id: String,
workers: Vec<WorkerRetentionInventory>,
diagnostics: Vec<RuntimeWorkerAggregateDiagnostic>,
}
impl WorkerRetentionInventorySnapshot {
pub(crate) fn new(
workspace_id: String,
runtime_id: String,
workers: Vec<WorkerRetentionInventory>,
diagnostics: Vec<RuntimeWorkerAggregateDiagnostic>,
) -> Self {
Self {
workspace_id,
runtime_id,
workers,
diagnostics,
}
}
pub fn workspace_id(&self) -> &str {
&self.workspace_id
}
pub fn runtime_id(&self) -> &str {
&self.runtime_id
}
pub fn workers(&self) -> &[WorkerRetentionInventory] {
&self.workers
}
pub fn diagnostics(&self) -> &[RuntimeWorkerAggregateDiagnostic] {
&self.diagnostics
}
}
#[derive(Clone, Debug, PartialEq, Eq, Serialize, Deserialize)]
pub struct WorkerRetentionExecutionRequest {
pub operation_id: String,
pub input_fingerprint: String,
pub archive_id: Option<String>,
pub workspace_id: String,
pub source_runtime_id: String,
pub worker_id: WorkerId,
pub expected_worker_revision: String,
pub expected_run_generation: u64,
pub source_created_at: String,
pub removed_at: String,
pub effective_profile: Option<String>,
pub retention_class: Option<String>,
pub policy_id: String,
pub policy_revision: u64,
pub session_disposition: SessionDisposition,
pub diagnostics_disposition: DiagnosticsDisposition,
}
#[derive(Clone, Debug, PartialEq, Eq, Serialize, Deserialize)]
pub struct WorkerSessionArchiveManifest {
pub schema_version: u32,
pub archive_id: String,
pub workspace_id: String,
pub source_runtime_id: String,
pub source_worker_id: WorkerId,
pub source_session_id: String,
pub segment_ids: Vec<String>,
pub source_created_at: String,
pub removed_at: String,
pub archived_at_unix_seconds: u64,
pub effective_profile: Option<String>,
pub retention_class: Option<String>,
pub content_checksum_sha256: String,
pub content_bytes: u64,
pub content_file_count: u64,
pub policy_id: String,
pub policy_revision: u64,
pub operation_id: String,
pub input_fingerprint: String,
}
#[derive(Clone, Debug, PartialEq, Eq, Serialize, Deserialize)]
pub struct WorkerRetentionExecutionResult {
pub operation_id: String,
pub input_fingerprint: String,
pub expected_worker_revision: String,
pub worker_id: WorkerId,
pub session_disposition: SessionDisposition,
pub diagnostics_disposition: DiagnosticsDisposition,
pub archive: Option<WorkerSessionArchiveManifest>,
pub source_removed: bool,
pub diagnostics_retained: bool,
}
pub(crate) trait WorkerRetentionProvider: Send + Sync {
fn inventory(
&self,
workspace_id: &str,
runtime_id: &str,
worker_id: WorkerId,
run_generation: u64,
) -> Result<WorkerRetentionInventory, RuntimeError>;
fn execute(
&self,
request: &WorkerRetentionExecutionRequest,
) -> Result<WorkerRetentionExecutionResult, RuntimeError>;
}
/// Filesystem provider for the canonical Runtime Worker aggregate.
#[derive(Clone, Debug)]
pub(crate) struct FsWorkerRetentionProvider {
runtime_root: PathBuf,
}
impl FsWorkerRetentionProvider {
pub(crate) fn new(runtime_root: impl Into<PathBuf>) -> Self {
Self {
runtime_root: runtime_root.into(),
}
}
pub(crate) fn completed_for(
&self,
request: &WorkerRetentionExecutionRequest,
) -> Result<Option<WorkerRetentionExecutionResult>, RuntimeError> {
let path = self.operation_path(&request.operation_id)?;
let Some(receipt) = read_operation_receipt(&path)? else {
return Ok(None);
};
validate_receipt_request(&receipt, request)?;
Ok(receipt.result.source_removed.then_some(receipt.result))
}
pub(crate) fn snapshot(
&self,
workspace_id: &str,
runtime_id: &str,
) -> Result<WorkerRetentionInventorySnapshot, RuntimeError> {
fs::create_dir_all(&self.runtime_root).map_err(|source| RuntimeError::StoreIo {
operation: "prepare Worker retention inventory",
path: self.runtime_root.clone(),
source,
})?;
let lock_path = self.runtime_root.join(RETENTION_LOCK);
let lock = OpenOptions::new()
.create(true)
.read(true)
.write(true)
.open(&lock_path)
.map_err(|source| RuntimeError::StoreIo {
operation: "lock Worker retention inventory",
path: lock_path.clone(),
source,
})?;
lock.lock().map_err(|source| RuntimeError::StoreIo {
operation: "lock Worker retention inventory",
path: lock_path,
source,
})?;
let workers_root = self.runtime_root.join("workers");
if !workers_root.is_dir() {
return Ok(WorkerRetentionInventorySnapshot::new(
workspace_id.to_string(),
runtime_id.to_string(),
Vec::new(),
Vec::new(),
));
}
let mut entries = fs::read_dir(&workers_root)
.map_err(|source| RuntimeError::StoreIo {
operation: "scan Worker retention inventory",
path: workers_root.clone(),
source,
})?
.collect::<Result<Vec<_>, _>>()
.map_err(|source| RuntimeError::StoreIo {
operation: "scan Worker retention inventory",
path: workers_root.clone(),
source,
})?;
entries.sort_by_key(|entry| entry.file_name());
let mut workers = Vec::new();
let mut diagnostics = Vec::new();
for entry in entries {
let raw_id = entry.file_name().to_string_lossy().to_string();
let bounded_id = bounded_diagnostic_id(&raw_id);
let file_type = match entry.file_type() {
Ok(file_type) => file_type,
Err(_) => {
diagnostics.push(runtime_aggregate_diagnostic(
&bounded_id,
"aggregate_metadata_unreadable",
));
continue;
}
};
if !file_type.is_dir() || file_type.is_symlink() {
diagnostics.push(runtime_aggregate_diagnostic(
&bounded_id,
"aggregate_entry_unsupported",
));
continue;
}
let Ok(worker_number) = raw_id.parse::<u64>() else {
diagnostics.push(runtime_aggregate_diagnostic(
&bounded_id,
"aggregate_worker_id_invalid",
));
continue;
};
let worker_id = WorkerId::new(worker_number);
let worker_dir = self.worker_dir(worker_id);
let snapshot: WorkerGenerationSnapshot = match read_json(
&worker_dir.join("worker.json"),
"scan Worker retention inventory",
) {
Ok(snapshot) => snapshot,
Err(_) => {
diagnostics.push(runtime_aggregate_diagnostic(
&bounded_id,
"aggregate_worker_record_corrupt",
));
continue;
}
};
if snapshot.workspace_id.as_deref() != Some(workspace_id) {
diagnostics.push(runtime_aggregate_diagnostic(
&bounded_id,
"aggregate_workspace_mismatch",
));
continue;
}
match self.inventory(workspace_id, runtime_id, worker_id, snapshot.run_generation) {
Ok(item) => workers.push(item),
Err(_) => diagnostics.push(runtime_aggregate_diagnostic(
&bounded_id,
"aggregate_session_inventory_failed",
)),
}
}
workers.sort_by_key(|item| item.worker_id);
diagnostics.sort_by(|left, right| {
(&left.worker_id, &left.category).cmp(&(&right.worker_id, &right.category))
});
Ok(WorkerRetentionInventorySnapshot::new(
workspace_id.to_string(),
runtime_id.to_string(),
workers,
diagnostics,
))
}
pub(crate) fn recover_after_source_removal(
&self,
request: &WorkerRetentionExecutionRequest,
) -> Result<WorkerRetentionExecutionResult, RuntimeError> {
if self.worker_dir(request.worker_id).exists() {
return Err(RuntimeError::WorkerNotFound {
worker_id: request.worker_id,
});
}
self.execute(request)
}
fn worker_dir(&self, worker_id: WorkerId) -> PathBuf {
self.runtime_root
.join("workers")
.join(worker_id.to_string())
}
fn operation_path(&self, operation_id: &str) -> Result<PathBuf, RuntimeError> {
validate_id("operation_id", operation_id)?;
Ok(self
.runtime_root
.join("retention")
.join("operations")
.join(format!("{operation_id}.json")))
}
fn archive_dir(&self, archive_id: &str) -> Result<PathBuf, RuntimeError> {
validate_id("archive_id", archive_id)?;
Ok(self
.runtime_root
.join("archives")
.join("workers")
.join(archive_id))
}
fn diagnostics_dir(&self, operation_id: &str) -> Result<PathBuf, RuntimeError> {
validate_id("operation_id", operation_id)?;
Ok(self
.runtime_root
.join("archives")
.join("diagnostics")
.join(operation_id))
}
}
impl WorkerRetentionProvider for FsWorkerRetentionProvider {
fn inventory(
&self,
workspace_id: &str,
runtime_id: &str,
worker_id: WorkerId,
run_generation: u64,
) -> Result<WorkerRetentionInventory, RuntimeError> {
let worker_dir = self.worker_dir(worker_id);
if !worker_dir.is_dir() {
return Err(RuntimeError::WorkerNotFound { worker_id });
}
let worker: WorkerGenerationSnapshot = read_json(
&worker_dir.join("worker.json"),
"inventory Worker retention",
)?;
if worker.workspace_id.as_deref() != Some(workspace_id) {
return Err(RuntimeError::WorkerNotFound { worker_id });
}
if worker.run_generation != run_generation {
return Err(RuntimeError::InvalidRequest(format!(
"Worker retention inventory expected generation {run_generation}, current generation is {}",
worker.run_generation
)));
}
let session_dir = worker_dir.join("session");
let (session_id, segment_ids, session_bytes) = if session_dir.is_dir() {
let manifest: CanonicalSessionManifest = read_json(
&session_dir.join("session.json"),
"inventory Worker retention",
)?;
let files = collect_files(&session_dir, "inventory Worker retention")?;
let mut segment_ids = BTreeSet::new();
let mut bytes = 0_u64;
for (relative, path) in files {
bytes = bytes.saturating_add(file_len(&path, "inventory Worker retention")?);
if let Some(name) = relative.file_name().and_then(|value| value.to_str()) {
let segment = name
.strip_suffix(".trace.jsonl")
.or_else(|| name.strip_suffix(".jsonl"));
if let Some(segment) = segment {
segment_ids.insert(segment.to_string());
}
}
}
(
Some(manifest.session_id),
segment_ids.into_iter().collect(),
bytes,
)
} else {
(None, Vec::new(), 0)
};
let diagnostics_bytes = diagnostics_files(&worker_dir, "inventory Worker retention")?
.into_iter()
.try_fold(0_u64, |total, path| {
file_len(&path, "inventory Worker retention").map(|size| total.saturating_add(size))
})?;
Ok(WorkerRetentionInventory {
workspace_id: workspace_id.to_string(),
runtime_id: runtime_id.to_string(),
worker_id,
run_generation,
session_id,
segment_ids,
session_bytes,
diagnostics_bytes,
})
}
fn execute(
&self,
request: &WorkerRetentionExecutionRequest,
) -> Result<WorkerRetentionExecutionResult, RuntimeError> {
validate_request(request)?;
fs::create_dir_all(&self.runtime_root).map_err(|source| RuntimeError::StoreIo {
operation: "prepare Worker retention",
path: self.runtime_root.clone(),
source,
})?;
let lock_path = self.runtime_root.join(RETENTION_LOCK);
let lock = OpenOptions::new()
.create(true)
.read(true)
.write(true)
.open(&lock_path)
.map_err(|source| RuntimeError::StoreIo {
operation: "lock Worker retention",
path: lock_path.clone(),
source,
})?;
lock.lock().map_err(|source| RuntimeError::StoreIo {
operation: "lock Worker retention",
path: lock_path,
source,
})?;
let pending = read_operation_receipt(&self.operation_path(&request.operation_id)?)?;
if let Some(receipt) = &pending {
validate_receipt_request(receipt, request)?;
if receipt.result.source_removed {
return Ok(receipt.result.clone());
}
}
let worker_dir = self.worker_dir(request.worker_id);
if !worker_dir.is_dir() {
if let Some(mut receipt) = pending {
// A prior attempt durably committed all disposition evidence and
// removed the aggregate, then stopped before finalizing its receipt.
receipt.result.source_removed = true;
atomic_write_json(
&self.operation_path(&request.operation_id)?,
&receipt,
"recover Worker retention receipt",
)?;
return Ok(receipt.result);
}
return Err(RuntimeError::WorkerNotFound {
worker_id: request.worker_id,
});
}
let snapshot: WorkerGenerationSnapshot =
read_json(&worker_dir.join("worker.json"), "execute Worker retention")?;
if snapshot.workspace_id.as_deref() != Some(request.workspace_id.as_str()) {
return Err(RuntimeError::WorkerNotFound {
worker_id: request.worker_id,
});
}
if snapshot.run_generation != request.expected_run_generation {
return Err(RuntimeError::InvalidRequest(format!(
"Worker retention plan expected generation {}, current generation is {}",
request.expected_run_generation, snapshot.run_generation
)));
}
let archive = match request.session_disposition {
SessionDisposition::Archive => {
Some(commit_session_archive(self, request, &worker_dir)?)
}
SessionDisposition::Purge => None,
};
let diagnostics_retained = match request.diagnostics_disposition {
DiagnosticsDisposition::Purge => false,
DiagnosticsDisposition::Retain => {
commit_diagnostics_archive(self, request, &worker_dir)?;
true
}
};
let mut result = WorkerRetentionExecutionResult {
operation_id: request.operation_id.clone(),
input_fingerprint: request.input_fingerprint.clone(),
expected_worker_revision: request.expected_worker_revision.clone(),
worker_id: request.worker_id,
session_disposition: request.session_disposition,
diagnostics_disposition: request.diagnostics_disposition,
archive,
source_removed: false,
diagnostics_retained,
};
let mut receipt = RetentionOperationReceipt {
schema_version: OPERATION_SCHEMA_VERSION,
request: request.clone(),
result: result.clone(),
};
// Pending receipt makes the delete/final-receipt crash window
// recoverable without treating an uncommitted archive as completion.
atomic_write_json(
&self.operation_path(&request.operation_id)?,
&receipt,
"commit pending Worker retention receipt",
)?;
fs::remove_dir_all(&worker_dir).map_err(|source| RuntimeError::StoreIo {
operation: "remove retained Worker aggregate",
path: worker_dir.clone(),
source,
})?;
sync_directory(
worker_dir.parent().unwrap_or(&self.runtime_root),
"remove retained Worker aggregate",
)?;
result.source_removed = true;
receipt.result = result.clone();
atomic_write_json(
&self.operation_path(&request.operation_id)?,
&receipt,
"commit Worker retention receipt",
)?;
Ok(result)
}
}
#[derive(Deserialize)]
struct WorkerGenerationSnapshot {
#[serde(default)]
workspace_id: Option<String>,
#[serde(default)]
run_generation: u64,
}
#[derive(Deserialize)]
struct CanonicalSessionManifest {
session_id: String,
}
#[derive(Serialize, Deserialize)]
struct RetentionOperationReceipt {
schema_version: u32,
request: WorkerRetentionExecutionRequest,
result: WorkerRetentionExecutionResult,
}
fn read_operation_receipt(path: &Path) -> Result<Option<RetentionOperationReceipt>, RuntimeError> {
if !path.is_file() {
return Ok(None);
}
let receipt: RetentionOperationReceipt = read_json(path, "read Worker retention receipt")?;
if receipt.schema_version != OPERATION_SCHEMA_VERSION {
return Err(RuntimeError::StoreCorrupt {
operation: "read Worker retention receipt",
path: path.to_path_buf(),
message: format!(
"unsupported operation receipt schema {}",
receipt.schema_version
),
});
}
Ok(Some(receipt))
}
fn validate_receipt_request(
receipt: &RetentionOperationReceipt,
request: &WorkerRetentionExecutionRequest,
) -> Result<(), RuntimeError> {
if &receipt.request != request
|| receipt.result.operation_id != request.operation_id
|| receipt.result.input_fingerprint != request.input_fingerprint
{
return Err(RuntimeError::InvalidRequest(format!(
"retention operation {} was already used with different input",
request.operation_id
)));
}
Ok(())
}
#[derive(Clone, Debug, PartialEq, Eq, Serialize, Deserialize)]
struct DiagnosticsArchiveManifest {
schema_version: u32,
operation_id: String,
workspace_id: String,
source_runtime_id: String,
source_worker_id: WorkerId,
input_fingerprint: String,
content_checksum_sha256: String,
content_bytes: u64,
content_file_count: u64,
}
fn runtime_aggregate_diagnostic(
worker_id: &str,
category: &str,
) -> RuntimeWorkerAggregateDiagnostic {
RuntimeWorkerAggregateDiagnostic {
worker_id: worker_id.to_string(),
category: category.to_string(),
detail: "Canonical Runtime Worker aggregate requires diagnostic reconciliation".to_string(),
}
}
fn bounded_diagnostic_id(value: &str) -> String {
let sanitized = value
.chars()
.take(64)
.map(|character| {
if character.is_ascii_alphanumeric() || matches!(character, '-' | '_' | '.') {
character
} else {
'_'
}
})
.collect::<String>();
if sanitized.is_empty() {
"unknown".to_string()
} else {
sanitized
}
}
fn validate_request(request: &WorkerRetentionExecutionRequest) -> Result<(), RuntimeError> {
validate_id("operation_id", &request.operation_id)?;
validate_id("workspace_id", &request.workspace_id)?;
validate_id("source_runtime_id", &request.source_runtime_id)?;
validate_id("policy_id", &request.policy_id)?;
if request.input_fingerprint.trim().is_empty() {
return Err(RuntimeError::InvalidRequest(
"retention input fingerprint must not be empty".to_string(),
));
}
match (request.session_disposition, request.archive_id.as_deref()) {
(SessionDisposition::Archive, Some(id)) => validate_id("archive_id", id),
(SessionDisposition::Archive, None) => Err(RuntimeError::InvalidRequest(
"archive disposition requires archive_id".to_string(),
)),
(SessionDisposition::Purge, None) => Ok(()),
(SessionDisposition::Purge, Some(_)) => Err(RuntimeError::InvalidRequest(
"purge disposition must not include archive_id".to_string(),
)),
}
}
fn validate_id(kind: &str, value: &str) -> Result<(), RuntimeError> {
if value.is_empty()
|| value.len() > 160
|| value == "."
|| value == ".."
|| !value
.bytes()
.all(|byte| byte.is_ascii_alphanumeric() || matches!(byte, b'-' | b'_' | b'.' | b':'))
{
return Err(RuntimeError::InvalidRequest(format!(
"invalid retention {kind}"
)));
}
Ok(())
}
fn commit_session_archive(
provider: &FsWorkerRetentionProvider,
request: &WorkerRetentionExecutionRequest,
worker_dir: &Path,
) -> Result<WorkerSessionArchiveManifest, RuntimeError> {
let archive_id = request.archive_id.as_deref().ok_or_else(|| {
RuntimeError::InvalidRequest("archive disposition requires archive_id".to_string())
})?;
let session_dir = worker_dir.join("session");
if !session_dir.is_dir() {
return Err(RuntimeError::StoreMissing {
operation: "archive Worker Session",
path: session_dir,
});
}
let session: CanonicalSessionManifest =
read_json(&session_dir.join("session.json"), "archive Worker Session")?;
let source_files = collect_files(&session_dir, "archive Worker Session")?;
let (checksum, bytes, count) = checksum_files(&source_files, "archive Worker Session")?;
let mut segment_ids = BTreeSet::new();
for (relative, _) in &source_files {
if let Some(name) = relative.file_name().and_then(|name| name.to_str()) {
if let Some(segment) = name
.strip_suffix(".trace.jsonl")
.or_else(|| name.strip_suffix(".jsonl"))
{
segment_ids.insert(segment.to_string());
}
}
}
let manifest = WorkerSessionArchiveManifest {
schema_version: ARCHIVE_SCHEMA_VERSION,
archive_id: archive_id.to_string(),
workspace_id: request.workspace_id.clone(),
source_runtime_id: request.source_runtime_id.clone(),
source_worker_id: request.worker_id,
source_session_id: session.session_id,
segment_ids: segment_ids.into_iter().collect(),
source_created_at: request.source_created_at.clone(),
removed_at: request.removed_at.clone(),
archived_at_unix_seconds: std::time::SystemTime::now()
.duration_since(std::time::UNIX_EPOCH)
.unwrap_or_default()
.as_secs(),
effective_profile: request.effective_profile.clone(),
retention_class: request.retention_class.clone(),
content_checksum_sha256: checksum,
content_bytes: bytes,
content_file_count: count,
policy_id: request.policy_id.clone(),
policy_revision: request.policy_revision,
operation_id: request.operation_id.clone(),
input_fingerprint: request.input_fingerprint.clone(),
};
let archive_dir = provider.archive_dir(archive_id)?;
if archive_dir.exists() {
return validate_existing_archive(&archive_dir, &manifest);
}
let parent = archive_dir
.parent()
.ok_or_else(|| RuntimeError::StoreCorrupt {
operation: "archive Worker Session",
path: archive_dir.clone(),
message: "archive target has no parent".to_string(),
})?;
fs::create_dir_all(parent).map_err(|source| RuntimeError::StoreIo {
operation: "archive Worker Session",
path: parent.to_path_buf(),
source,
})?;
let staging = temporary_path(&archive_dir);
let result = (|| {
fs::create_dir(&staging).map_err(|source| RuntimeError::StoreIo {
operation: "archive Worker Session",
path: staging.clone(),
source,
})?;
let target_session = staging.join("session");
fs::create_dir(&target_session).map_err(|source| RuntimeError::StoreIo {
operation: "archive Worker Session",
path: target_session.clone(),
source,
})?;
copy_files(&source_files, &target_session, "archive Worker Session")?;
atomic_write_json(
&staging.join("manifest.json"),
&manifest,
"archive Worker Session",
)?;
sync_tree(&staging, "archive Worker Session")?;
fs::rename(&staging, &archive_dir).map_err(|source| RuntimeError::StoreIo {
operation: "archive Worker Session",
path: archive_dir.clone(),
source,
})?;
sync_directory(parent, "archive Worker Session")?;
validate_existing_archive(&archive_dir, &manifest)
})();
if result.is_err() {
let _ = fs::remove_dir_all(&staging);
}
result
}
fn validate_existing_archive(
archive_dir: &Path,
expected: &WorkerSessionArchiveManifest,
) -> Result<WorkerSessionArchiveManifest, RuntimeError> {
let existing: WorkerSessionArchiveManifest = read_json(
&archive_dir.join("manifest.json"),
"verify Worker Session archive",
)?;
let mut comparable_expected = expected.clone();
comparable_expected.archived_at_unix_seconds = existing.archived_at_unix_seconds;
if existing != comparable_expected {
return Err(RuntimeError::StoreCorrupt {
operation: "verify Worker Session archive",
path: archive_dir.join("manifest.json"),
message: "archive id collision or manifest mismatch".to_string(),
});
}
let files = collect_files(
&archive_dir.join("session"),
"verify Worker Session archive",
)?;
let (checksum, bytes, count) = checksum_files(&files, "verify Worker Session archive")?;
if checksum != existing.content_checksum_sha256
|| bytes != existing.content_bytes
|| count != existing.content_file_count
{
return Err(RuntimeError::StoreCorrupt {
operation: "verify Worker Session archive",
path: archive_dir.to_path_buf(),
message: "archive checksum or content summary mismatch".to_string(),
});
}
Ok(existing)
}
fn commit_diagnostics_archive(
provider: &FsWorkerRetentionProvider,
request: &WorkerRetentionExecutionRequest,
worker_dir: &Path,
) -> Result<(), RuntimeError> {
let files = diagnostics_files(worker_dir, "archive Worker diagnostics")?;
let target = provider.diagnostics_dir(&request.operation_id)?;
if target.exists() {
validate_existing_diagnostics_archive(&target, request)?;
return Ok(());
}
let parent = target.parent().ok_or_else(|| RuntimeError::StoreCorrupt {
operation: "archive Worker diagnostics",
path: target.clone(),
message: "diagnostics archive target has no parent".to_string(),
})?;
fs::create_dir_all(parent).map_err(|source| RuntimeError::StoreIo {
operation: "archive Worker diagnostics",
path: parent.to_path_buf(),
source,
})?;
let staging = temporary_path(&target);
let result = (|| {
fs::create_dir(&staging).map_err(|source| RuntimeError::StoreIo {
operation: "archive Worker diagnostics",
path: staging.clone(),
source,
})?;
let source_files = files
.iter()
.map(|path| {
let relative =
path.strip_prefix(worker_dir)
.map_err(|_| RuntimeError::StoreCorrupt {
operation: "archive Worker diagnostics",
path: path.clone(),
message: "diagnostics path escaped Worker aggregate".to_string(),
})?;
Ok((relative.to_path_buf(), path.clone()))
})
.collect::<Result<Vec<_>, RuntimeError>>()?;
copy_files(&source_files, &staging, "archive Worker diagnostics")?;
let (checksum, bytes, count) = checksum_files(&source_files, "archive Worker diagnostics")?;
let manifest = DiagnosticsArchiveManifest {
schema_version: ARCHIVE_SCHEMA_VERSION,
operation_id: request.operation_id.clone(),
workspace_id: request.workspace_id.clone(),
source_runtime_id: request.source_runtime_id.clone(),
source_worker_id: request.worker_id,
input_fingerprint: request.input_fingerprint.clone(),
content_checksum_sha256: checksum,
content_bytes: bytes,
content_file_count: count,
};
atomic_write_json(
&staging.join("manifest.json"),
&manifest,
"archive Worker diagnostics",
)?;
sync_tree(&staging, "archive Worker diagnostics")?;
fs::rename(&staging, &target).map_err(|source| RuntimeError::StoreIo {
operation: "archive Worker diagnostics",
path: target.clone(),
source,
})?;
sync_directory(parent, "archive Worker diagnostics")?;
validate_existing_diagnostics_archive(&target, request)
})();
if result.is_err() {
let _ = fs::remove_dir_all(&staging);
}
result
}
fn validate_existing_diagnostics_archive(
target: &Path,
request: &WorkerRetentionExecutionRequest,
) -> Result<(), RuntimeError> {
let manifest: DiagnosticsArchiveManifest = read_json(
&target.join("manifest.json"),
"verify Worker diagnostics archive",
)?;
if manifest.schema_version != ARCHIVE_SCHEMA_VERSION
|| manifest.operation_id != request.operation_id
|| manifest.workspace_id != request.workspace_id
|| manifest.source_runtime_id != request.source_runtime_id
|| manifest.source_worker_id != request.worker_id
|| manifest.input_fingerprint != request.input_fingerprint
{
return Err(RuntimeError::InvalidRequest(format!(
"diagnostics archive operation {} does not match the retention request",
request.operation_id
)));
}
let mut files = collect_files(target, "verify Worker diagnostics archive")?;
files.retain(|(relative, _)| relative != Path::new("manifest.json"));
let (checksum, bytes, count) = checksum_files(&files, "verify Worker diagnostics archive")?;
if checksum != manifest.content_checksum_sha256
|| bytes != manifest.content_bytes
|| count != manifest.content_file_count
{
return Err(RuntimeError::StoreCorrupt {
operation: "verify Worker diagnostics archive",
path: target.to_path_buf(),
message: "diagnostics archive checksum or content summary mismatch".to_string(),
});
}
Ok(())
}
fn diagnostics_files(
worker_dir: &Path,
operation: &'static str,
) -> Result<Vec<PathBuf>, RuntimeError> {
let runs = worker_dir.join("runs");
if !runs.is_dir() {
return Ok(Vec::new());
}
let mut files = Vec::new();
for (_, path) in collect_files(&runs, operation)? {
let name = path.file_name().and_then(|name| name.to_str());
if matches!(name, Some("worker.out.log" | "worker.err.log")) {
files.push(path);
}
}
files.sort();
Ok(files)
}
fn collect_files(
root: &Path,
operation: &'static str,
) -> Result<Vec<(PathBuf, PathBuf)>, RuntimeError> {
fn visit(
root: &Path,
current: &Path,
operation: &'static str,
files: &mut Vec<(PathBuf, PathBuf)>,
) -> Result<(), RuntimeError> {
let mut entries = fs::read_dir(current)
.map_err(|source| RuntimeError::StoreIo {
operation,
path: current.to_path_buf(),
source,
})?
.collect::<Result<Vec<_>, _>>()
.map_err(|source| RuntimeError::StoreIo {
operation,
path: current.to_path_buf(),
source,
})?;
entries.sort_by_key(|entry| entry.file_name());
for entry in entries {
let path = entry.path();
let file_type = entry.file_type().map_err(|source| RuntimeError::StoreIo {
operation,
path: path.clone(),
source,
})?;
if file_type.is_symlink() {
return Err(RuntimeError::StoreCorrupt {
operation,
path,
message: "symlinks are not allowed in retained Worker evidence".to_string(),
});
}
if file_type.is_dir() {
visit(root, &path, operation, files)?;
} else if file_type.is_file() {
let relative = path
.strip_prefix(root)
.map_err(|_| RuntimeError::StoreCorrupt {
operation,
path: path.clone(),
message: "retention source escaped its aggregate root".to_string(),
})?
.to_path_buf();
files.push((relative, path));
} else {
return Err(RuntimeError::StoreCorrupt {
operation,
path,
message: "unsupported retained Worker evidence entry".to_string(),
});
}
}
Ok(())
}
if !root.is_dir() {
return Ok(Vec::new());
}
let mut files = Vec::new();
visit(root, root, operation, &mut files)?;
files.sort_by(|left, right| left.0.cmp(&right.0));
Ok(files)
}
fn checksum_files(
files: &[(PathBuf, PathBuf)],
operation: &'static str,
) -> Result<(String, u64, u64), RuntimeError> {
let mut hasher = Sha256::new();
let mut total = 0_u64;
for (relative, path) in files {
let relative = relative.to_string_lossy();
hasher.update((relative.len() as u64).to_be_bytes());
hasher.update(relative.as_bytes());
let mut file = File::open(path).map_err(|source| RuntimeError::StoreIo {
operation,
path: path.clone(),
source,
})?;
let length = file_len(path, operation)?;
hasher.update(length.to_be_bytes());
let mut buffer = [0_u8; 8192];
loop {
let read = file
.read(&mut buffer)
.map_err(|source| RuntimeError::StoreIo {
operation,
path: path.clone(),
source,
})?;
if read == 0 {
break;
}
hasher.update(&buffer[..read]);
}
total = total.saturating_add(length);
}
let digest = hasher.finalize();
let checksum = digest
.iter()
.map(|byte| format!("{byte:02x}"))
.collect::<String>();
Ok((checksum, total, files.len() as u64))
}
fn copy_files(
files: &[(PathBuf, PathBuf)],
target_root: &Path,
operation: &'static str,
) -> Result<(), RuntimeError> {
for (relative, source_path) in files {
let target = target_root.join(relative);
let parent = target.parent().ok_or_else(|| RuntimeError::StoreCorrupt {
operation,
path: target.clone(),
message: "retention copy target has no parent".to_string(),
})?;
fs::create_dir_all(parent).map_err(|source| RuntimeError::StoreIo {
operation,
path: parent.to_path_buf(),
source,
})?;
let bytes = fs::read(source_path).map_err(|source| RuntimeError::StoreIo {
operation,
path: source_path.clone(),
source,
})?;
let mut file = OpenOptions::new()
.write(true)
.create_new(true)
.open(&target)
.map_err(|source| RuntimeError::StoreIo {
operation,
path: target.clone(),
source,
})?;
file.write_all(&bytes)
.and_then(|_| file.sync_all())
.map_err(|source| RuntimeError::StoreIo {
operation,
path: target,
source,
})?;
}
Ok(())
}
fn atomic_write_json<T: Serialize>(
path: &Path,
value: &T,
operation: &'static str,
) -> Result<(), RuntimeError> {
let parent = path.parent().ok_or_else(|| RuntimeError::StoreCorrupt {
operation,
path: path.to_path_buf(),
message: "retention record has no parent".to_string(),
})?;
fs::create_dir_all(parent).map_err(|source| RuntimeError::StoreIo {
operation,
path: parent.to_path_buf(),
source,
})?;
let temporary = temporary_path(path);
let result = (|| {
let mut file = OpenOptions::new()
.write(true)
.create_new(true)
.open(&temporary)
.map_err(|source| RuntimeError::StoreIo {
operation,
path: temporary.clone(),
source,
})?;
serde_json::to_writer_pretty(&mut file, value).map_err(|source| {
RuntimeError::StoreCorrupt {
operation,
path: temporary.clone(),
message: source.to_string(),
}
})?;
file.write_all(b"\n")
.and_then(|_| file.sync_all())
.map_err(|source| RuntimeError::StoreIo {
operation,
path: temporary.clone(),
source,
})?;
drop(file);
fs::rename(&temporary, path).map_err(|source| RuntimeError::StoreIo {
operation,
path: path.to_path_buf(),
source,
})?;
sync_directory(parent, operation)
})();
if result.is_err() {
let _ = fs::remove_file(temporary);
}
result
}
fn read_json<T: for<'de> Deserialize<'de>>(
path: &Path,
operation: &'static str,
) -> Result<T, RuntimeError> {
let file = File::open(path).map_err(|source| match source.kind() {
std::io::ErrorKind::NotFound => RuntimeError::StoreMissing {
operation,
path: path.to_path_buf(),
},
_ => RuntimeError::StoreIo {
operation,
path: path.to_path_buf(),
source,
},
})?;
serde_json::from_reader(file).map_err(|source| RuntimeError::StoreCorrupt {
operation,
path: path.to_path_buf(),
message: source.to_string(),
})
}
fn sync_tree(path: &Path, operation: &'static str) -> Result<(), RuntimeError> {
let mut directories = vec![path.to_path_buf()];
let mut index = 0;
while index < directories.len() {
let current = directories[index].clone();
index += 1;
for entry in fs::read_dir(&current).map_err(|source| RuntimeError::StoreIo {
operation,
path: current.clone(),
source,
})? {
let entry = entry.map_err(|source| RuntimeError::StoreIo {
operation,
path: current.clone(),
source,
})?;
if entry.path().is_dir() {
directories.push(entry.path());
}
}
}
for directory in directories.into_iter().rev() {
sync_directory(&directory, operation)?;
}
Ok(())
}
fn sync_directory(path: &Path, operation: &'static str) -> Result<(), RuntimeError> {
File::open(path)
.and_then(|file| file.sync_all())
.map_err(|source| RuntimeError::StoreIo {
operation,
path: path.to_path_buf(),
source,
})
}
fn file_len(path: &Path, operation: &'static str) -> Result<u64, RuntimeError> {
fs::metadata(path)
.map(|metadata| metadata.len())
.map_err(|source| RuntimeError::StoreIo {
operation,
path: path.to_path_buf(),
source,
})
}
fn temporary_path(path: &Path) -> PathBuf {
let sequence = NEXT_TEMP_SEQUENCE.fetch_add(1, Ordering::Relaxed);
let name = path
.file_name()
.and_then(|name| name.to_str())
.unwrap_or("retention");
path.with_file_name(format!(".{name}.tmp-{}-{sequence}", std::process::id()))
}
#[cfg(test)]
mod tests {
use super::*;
use std::sync::{Arc, Barrier};
fn write_json(path: &Path, value: &impl Serialize) {
fs::create_dir_all(path.parent().unwrap()).unwrap();
fs::write(path, serde_json::to_vec_pretty(value).unwrap()).unwrap();
}
fn source(root: &Path, worker_id: WorkerId, generation: u64) {
let worker = root.join("workers").join(worker_id.to_string());
write_json(
&worker.join("worker.json"),
&serde_json::json!({"workspace_id": "workspace-a", "run_generation": generation}),
);
write_json(
&worker.join("session/session.json"),
&serde_json::json!({"schema_version": 1, "session_id": "session-a"}),
);
fs::create_dir_all(worker.join("session/segments")).unwrap();
fs::write(worker.join("session/segments/segment-a.jsonl"), b"one\n").unwrap();
fs::create_dir_all(worker.join(format!("runs/{generation}"))).unwrap();
fs::write(
worker.join(format!("runs/{generation}/worker.out.log")),
b"diagnostic\n",
)
.unwrap();
fs::write(
worker.join(format!("runs/{generation}/worker.sock")),
b"not retained",
)
.unwrap();
}
fn request(
worker_id: WorkerId,
generation: u64,
disposition: SessionDisposition,
) -> WorkerRetentionExecutionRequest {
WorkerRetentionExecutionRequest {
operation_id: "operation-a".to_string(),
input_fingerprint: "fingerprint-a".to_string(),
expected_worker_revision: "revision-a".to_string(),
archive_id: (disposition == SessionDisposition::Archive)
.then(|| "archive-a".to_string()),
workspace_id: "workspace-a".to_string(),
source_runtime_id: "runtime-a".to_string(),
worker_id,
expected_run_generation: generation,
source_created_at: "2026-01-01T00:00:00Z".to_string(),
removed_at: "2026-01-02T00:00:00Z".to_string(),
effective_profile: Some("builtin:coder".to_string()),
retention_class: None,
policy_id: "policy-a".to_string(),
policy_revision: 3,
session_disposition: disposition,
diagnostics_disposition: DiagnosticsDisposition::Purge,
}
}
#[test]
fn archive_is_verified_before_source_removal_and_retry_converges() {
let temp = tempfile::tempdir().unwrap();
let worker_id = WorkerId::new(7);
source(temp.path(), worker_id, 4);
let provider = FsWorkerRetentionProvider::new(temp.path());
let request = request(worker_id, 4, SessionDisposition::Archive);
let first = provider.execute(&request).unwrap();
assert!(first.source_removed);
let archive = first.archive.as_ref().unwrap();
assert_eq!(archive.source_session_id, "session-a");
assert_eq!(archive.segment_ids, vec!["segment-a"]);
assert!(!temp.path().join("workers/7").exists());
assert!(
temp.path()
.join("archives/workers/archive-a/session/segments/segment-a.jsonl")
.is_file()
);
assert!(!temp.path().join("archives/workers/archive-a/runs").exists());
let retry = provider.execute(&request).unwrap();
assert_eq!(retry, first);
assert_eq!(
fs::read_dir(temp.path().join("archives/workers"))
.unwrap()
.count(),
1
);
}
#[test]
fn archive_failure_keeps_live_source_for_retry() {
let temp = tempfile::tempdir().unwrap();
let worker_id = WorkerId::new(8);
source(temp.path(), worker_id, 2);
let collision = temp.path().join("archives/workers/archive-a");
fs::create_dir_all(&collision).unwrap();
fs::write(collision.join("manifest.json"), b"not-json").unwrap();
let provider = FsWorkerRetentionProvider::new(temp.path());
assert!(
provider
.execute(&request(worker_id, 2, SessionDisposition::Archive))
.is_err()
);
assert!(temp.path().join("workers/8/session").is_dir());
assert!(
!temp
.path()
.join("retention/operations/operation-a.json")
.exists()
);
}
#[test]
fn target_inventory_and_execute_reject_cross_workspace_aggregate() {
let temp = tempfile::tempdir().unwrap();
let worker_id = WorkerId::new(16);
source(temp.path(), worker_id, 3);
let provider = FsWorkerRetentionProvider::new(temp.path());
assert!(matches!(
provider.inventory("other-workspace", "runtime-a", worker_id, 3),
Err(RuntimeError::WorkerNotFound { .. })
));
let mut request = request(worker_id, 3, SessionDisposition::Purge);
request.workspace_id = "other-workspace".to_string();
assert!(matches!(
provider.execute(&request),
Err(RuntimeError::WorkerNotFound { .. })
));
assert!(temp.path().join("workers/16/session").is_dir());
assert!(
!temp
.path()
.join("retention/operations/operation-a.json")
.exists()
);
request.workspace_id = "workspace-a".to_string();
provider.execute(&request).unwrap();
request.workspace_id = "other-workspace".to_string();
assert!(provider.execute(&request).is_err());
}
#[test]
fn purge_removes_aggregate_and_rejects_stale_generation() {
let temp = tempfile::tempdir().unwrap();
let provider = FsWorkerRetentionProvider::new(temp.path());
let worker_id = WorkerId::new(9);
source(temp.path(), worker_id, 5);
let stale = request(worker_id, 4, SessionDisposition::Purge);
assert!(provider.execute(&stale).is_err());
assert!(temp.path().join("workers/9/session").is_dir());
let mut current = request(worker_id, 5, SessionDisposition::Purge);
current.operation_id = "operation-current".to_string();
current.input_fingerprint = "fingerprint-current".to_string();
let result = provider.execute(&current).unwrap();
assert!(result.archive.is_none());
assert!(!temp.path().join("workers/9").exists());
assert!(
temp.path()
.join("retention/operations/operation-current.json")
.is_file()
);
}
#[test]
fn pending_receipt_recovers_delete_to_receipt_crash_window() {
let temp = tempfile::tempdir().unwrap();
let worker_id = WorkerId::new(11);
source(temp.path(), worker_id, 1);
let provider = FsWorkerRetentionProvider::new(temp.path());
let request = request(worker_id, 1, SessionDisposition::Archive);
let completed = provider.execute(&request).unwrap();
let receipt_path = temp.path().join("retention/operations/operation-a.json");
let mut receipt: RetentionOperationReceipt =
serde_json::from_slice(&fs::read(&receipt_path).unwrap()).unwrap();
receipt.result.source_removed = false;
fs::write(&receipt_path, serde_json::to_vec_pretty(&receipt).unwrap()).unwrap();
let recovered = provider.execute(&request).unwrap();
assert_eq!(recovered, completed);
assert!(provider.completed_for(&request).unwrap().is_some());
}
#[test]
fn provider_snapshot_scans_aggregate_storage_independent_of_runtime_catalog() {
let temp = tempfile::tempdir().unwrap();
source(temp.path(), WorkerId::new(13), 2);
source(temp.path(), WorkerId::new(14), 1);
write_json(
&temp.path().join("workers/14/worker.json"),
&serde_json::json!({"workspace_id": "other-workspace", "run_generation": 1}),
);
fs::create_dir_all(temp.path().join("workers/not-a-worker")).unwrap();
fs::write(
temp.path().join("workers/not-a-worker/worker.json"),
b"not-json",
)
.unwrap();
fs::create_dir_all(temp.path().join("workers/15")).unwrap();
fs::write(temp.path().join("workers/15/worker.json"), b"not-json").unwrap();
let provider = FsWorkerRetentionProvider::new(temp.path());
let snapshot = provider.snapshot("workspace-a", "runtime-a").unwrap();
assert_eq!(snapshot.workers().len(), 1);
assert_eq!(snapshot.workers()[0].worker_id, WorkerId::new(13));
assert!(snapshot.diagnostics().iter().any(|diagnostic| {
diagnostic.worker_id() == "14"
&& diagnostic.category() == "aggregate_workspace_mismatch"
}));
assert!(snapshot.diagnostics().iter().any(|diagnostic| {
diagnostic.worker_id() == "not-a-worker"
&& diagnostic.category() == "aggregate_worker_id_invalid"
}));
assert!(snapshot.diagnostics().iter().any(|diagnostic| {
diagnostic.worker_id() == "15"
&& diagnostic.category() == "aggregate_worker_record_corrupt"
}));
}
#[test]
fn diagnostics_retry_rejects_corrupt_existing_archive_before_source_delete() {
let temp = tempfile::tempdir().unwrap();
let worker_id = WorkerId::new(12);
source(temp.path(), worker_id, 1);
let provider = FsWorkerRetentionProvider::new(temp.path());
let mut request = request(worker_id, 1, SessionDisposition::Archive);
request.diagnostics_disposition = DiagnosticsDisposition::Retain;
provider.execute(&request).unwrap();
let receipt_path = temp.path().join("retention/operations/operation-a.json");
let mut receipt: RetentionOperationReceipt =
serde_json::from_slice(&fs::read(&receipt_path).unwrap()).unwrap();
receipt.result.source_removed = false;
fs::write(&receipt_path, serde_json::to_vec_pretty(&receipt).unwrap()).unwrap();
source(temp.path(), worker_id, 1);
fs::write(
temp.path()
.join("archives/diagnostics/operation-a/runs/1/worker.out.log"),
b"corrupt\n",
)
.unwrap();
assert!(provider.execute(&request).is_err());
assert!(temp.path().join("workers/12/session").is_dir());
assert!(provider.completed_for(&request).unwrap().is_none());
}
#[test]
fn concurrent_retry_produces_one_archive() {
let temp = tempfile::tempdir().unwrap();
let worker_id = WorkerId::new(10);
source(temp.path(), worker_id, 1);
let provider = Arc::new(FsWorkerRetentionProvider::new(temp.path()));
let request = Arc::new(request(worker_id, 1, SessionDisposition::Archive));
let barrier = Arc::new(Barrier::new(3));
let handles = (0..2)
.map(|_| {
let provider = provider.clone();
let request = request.clone();
let barrier = barrier.clone();
std::thread::spawn(move || {
barrier.wait();
provider.execute(&request)
})
})
.collect::<Vec<_>>();
barrier.wait();
let results = handles
.into_iter()
.map(|handle| handle.join().unwrap().unwrap())
.collect::<Vec<_>>();
assert_eq!(results[0], results[1]);
assert_eq!(
fs::read_dir(temp.path().join("archives/workers"))
.unwrap()
.count(),
1
);
}
}