Add seeded task workspace creation
Current persistent tasks started with an empty workspace, which blocked the first useful host-to-task workflow in the task roadmap. This change lets task creation start from a host directory or tar archive without changing the one-shot VM surfaces. Expose source_path on task create across the CLI, SDK, and MCP, add safe archive upload and extraction support for guest and host-compat backends, persist workspace_seed metadata, and patch the per-task rootfs with the bundled guest agent before boot so seeded guest tasks work without republishing environments. Also switch post--- command reconstruction to shlex.join() so documented sh -lc task examples preserve argument boundaries. Validation: - uv lock - UV_CACHE_DIR=.uv-cache uv run pytest --no-cov tests/test_vm_guest.py tests/test_vm_manager.py tests/test_cli.py tests/test_api.py tests/test_server.py tests/test_public_contract.py - UV_CACHE_DIR=.uv-cache make check - UV_CACHE_DIR=.uv-cache make dist-check - real guest-backed smoke: task create --source-path, task exec -- cat note.txt, task delete
This commit is contained in:
parent
58df176148
commit
aa886b346e
25 changed files with 1076 additions and 75 deletions
|
|
@ -1,26 +1,31 @@
|
|||
#!/usr/bin/env python3
|
||||
"""Minimal guest-side exec agent for pyro runtime bundles."""
|
||||
"""Minimal guest-side exec and workspace import agent for pyro runtime bundles."""
|
||||
|
||||
from __future__ import annotations
|
||||
|
||||
import io
|
||||
import json
|
||||
import os
|
||||
import socket
|
||||
import subprocess
|
||||
import tarfile
|
||||
import time
|
||||
from pathlib import Path, PurePosixPath
|
||||
from typing import Any
|
||||
|
||||
PORT = 5005
|
||||
BUFFER_SIZE = 65536
|
||||
WORKSPACE_ROOT = PurePosixPath("/workspace")
|
||||
|
||||
|
||||
def _read_request(conn: socket.socket) -> dict[str, Any]:
|
||||
chunks: list[bytes] = []
|
||||
while True:
|
||||
data = conn.recv(BUFFER_SIZE)
|
||||
data = conn.recv(1)
|
||||
if data == b"":
|
||||
break
|
||||
chunks.append(data)
|
||||
if b"\n" in data:
|
||||
if data == b"\n":
|
||||
break
|
||||
payload = json.loads(b"".join(chunks).decode("utf-8").strip())
|
||||
if not isinstance(payload, dict):
|
||||
|
|
@ -28,6 +33,130 @@ def _read_request(conn: socket.socket) -> dict[str, Any]:
|
|||
return payload
|
||||
|
||||
|
||||
def _read_exact(conn: socket.socket, size: int) -> bytes:
|
||||
remaining = size
|
||||
chunks: list[bytes] = []
|
||||
while remaining > 0:
|
||||
data = conn.recv(min(BUFFER_SIZE, remaining))
|
||||
if data == b"":
|
||||
raise RuntimeError("unexpected EOF while reading archive payload")
|
||||
chunks.append(data)
|
||||
remaining -= len(data)
|
||||
return b"".join(chunks)
|
||||
|
||||
|
||||
def _normalize_member_name(name: str) -> PurePosixPath:
|
||||
candidate = name.strip()
|
||||
if candidate == "":
|
||||
raise RuntimeError("archive member path is empty")
|
||||
member_path = PurePosixPath(candidate)
|
||||
if member_path.is_absolute():
|
||||
raise RuntimeError(f"absolute archive member paths are not allowed: {name}")
|
||||
parts = [part for part in member_path.parts if part not in {"", "."}]
|
||||
if any(part == ".." for part in parts):
|
||||
raise RuntimeError(f"unsafe archive member path: {name}")
|
||||
normalized = PurePosixPath(*parts)
|
||||
if str(normalized) in {"", "."}:
|
||||
raise RuntimeError(f"unsafe archive member path: {name}")
|
||||
return normalized
|
||||
|
||||
|
||||
def _normalize_destination(destination: str) -> tuple[PurePosixPath, Path]:
|
||||
candidate = destination.strip()
|
||||
if candidate == "":
|
||||
raise RuntimeError("destination must not be empty")
|
||||
destination_path = PurePosixPath(candidate)
|
||||
if not destination_path.is_absolute():
|
||||
destination_path = WORKSPACE_ROOT / destination_path
|
||||
parts = [part for part in destination_path.parts if part not in {"", "."}]
|
||||
normalized = PurePosixPath("/") / PurePosixPath(*parts)
|
||||
if normalized == PurePosixPath("/"):
|
||||
raise RuntimeError("destination must stay inside /workspace")
|
||||
if normalized.parts[: len(WORKSPACE_ROOT.parts)] != WORKSPACE_ROOT.parts:
|
||||
raise RuntimeError("destination must stay inside /workspace")
|
||||
suffix = normalized.relative_to(WORKSPACE_ROOT)
|
||||
host_path = Path("/workspace")
|
||||
if str(suffix) not in {"", "."}:
|
||||
host_path = host_path / str(suffix)
|
||||
return normalized, host_path
|
||||
|
||||
|
||||
def _validate_symlink_target(member_path: PurePosixPath, link_target: str) -> None:
|
||||
target = link_target.strip()
|
||||
if target == "":
|
||||
raise RuntimeError(f"symlink {member_path} has an empty target")
|
||||
target_path = PurePosixPath(target)
|
||||
if target_path.is_absolute():
|
||||
raise RuntimeError(f"symlink {member_path} escapes the workspace")
|
||||
combined = member_path.parent.joinpath(target_path)
|
||||
parts = [part for part in combined.parts if part not in {"", "."}]
|
||||
if any(part == ".." for part in parts):
|
||||
raise RuntimeError(f"symlink {member_path} escapes the workspace")
|
||||
|
||||
|
||||
def _ensure_no_symlink_parents(root: Path, target_path: Path, member_name: str) -> None:
|
||||
relative_path = target_path.relative_to(root)
|
||||
current = root
|
||||
for part in relative_path.parts[:-1]:
|
||||
current = current / part
|
||||
if current.is_symlink():
|
||||
raise RuntimeError(
|
||||
f"archive member would traverse through a symlinked path: {member_name}"
|
||||
)
|
||||
|
||||
|
||||
def _extract_archive(payload: bytes, destination: str) -> dict[str, Any]:
|
||||
_, destination_root = _normalize_destination(destination)
|
||||
destination_root.mkdir(parents=True, exist_ok=True)
|
||||
bytes_written = 0
|
||||
entry_count = 0
|
||||
with tarfile.open(fileobj=io.BytesIO(payload), mode="r:*") as archive:
|
||||
for member in archive.getmembers():
|
||||
member_name = _normalize_member_name(member.name)
|
||||
target_path = destination_root / str(member_name)
|
||||
entry_count += 1
|
||||
_ensure_no_symlink_parents(destination_root, target_path, member.name)
|
||||
if member.isdir():
|
||||
if target_path.exists() and not target_path.is_dir():
|
||||
raise RuntimeError(f"directory conflicts with existing path: {member.name}")
|
||||
target_path.mkdir(parents=True, exist_ok=True)
|
||||
continue
|
||||
if member.isfile():
|
||||
target_path.parent.mkdir(parents=True, exist_ok=True)
|
||||
if target_path.exists() and (target_path.is_dir() or target_path.is_symlink()):
|
||||
raise RuntimeError(f"file conflicts with existing path: {member.name}")
|
||||
source = archive.extractfile(member)
|
||||
if source is None:
|
||||
raise RuntimeError(f"failed to read archive member: {member.name}")
|
||||
with target_path.open("wb") as handle:
|
||||
while True:
|
||||
chunk = source.read(BUFFER_SIZE)
|
||||
if chunk == b"":
|
||||
break
|
||||
handle.write(chunk)
|
||||
bytes_written += member.size
|
||||
continue
|
||||
if member.issym():
|
||||
_validate_symlink_target(member_name, member.linkname)
|
||||
target_path.parent.mkdir(parents=True, exist_ok=True)
|
||||
if target_path.exists() and not target_path.is_symlink():
|
||||
raise RuntimeError(f"symlink conflicts with existing path: {member.name}")
|
||||
if target_path.is_symlink():
|
||||
target_path.unlink()
|
||||
os.symlink(member.linkname, target_path)
|
||||
continue
|
||||
if member.islnk():
|
||||
raise RuntimeError(
|
||||
f"hard links are not allowed in workspace archives: {member.name}"
|
||||
)
|
||||
raise RuntimeError(f"unsupported archive member type: {member.name}")
|
||||
return {
|
||||
"destination": destination,
|
||||
"entry_count": entry_count,
|
||||
"bytes_written": bytes_written,
|
||||
}
|
||||
|
||||
|
||||
def _run_command(command: str, timeout_seconds: int) -> dict[str, Any]:
|
||||
started = time.monotonic()
|
||||
try:
|
||||
|
|
@ -64,9 +193,18 @@ def main() -> None:
|
|||
conn, _ = server.accept()
|
||||
with conn:
|
||||
request = _read_request(conn)
|
||||
command = str(request.get("command", ""))
|
||||
timeout_seconds = int(request.get("timeout_seconds", 30))
|
||||
response = _run_command(command, timeout_seconds)
|
||||
action = str(request.get("action", "exec"))
|
||||
if action == "extract_archive":
|
||||
archive_size = int(request.get("archive_size", 0))
|
||||
if archive_size < 0:
|
||||
raise RuntimeError("archive_size must not be negative")
|
||||
destination = str(request.get("destination", "/workspace"))
|
||||
payload = _read_exact(conn, archive_size)
|
||||
response = _extract_archive(payload, destination)
|
||||
else:
|
||||
command = str(request.get("command", ""))
|
||||
timeout_seconds = int(request.get("timeout_seconds", 30))
|
||||
response = _run_command(command, timeout_seconds)
|
||||
conn.sendall((json.dumps(response) + "\n").encode("utf-8"))
|
||||
|
||||
|
||||
|
|
|
|||
|
|
@ -5,7 +5,7 @@
|
|||
"firecracker": "1.12.1",
|
||||
"jailer": "1.12.1",
|
||||
"kernel": "5.10.210",
|
||||
"guest_agent": "0.1.0-dev",
|
||||
"guest_agent": "0.2.0-dev",
|
||||
"base_distro": "debian-bookworm-20250210"
|
||||
},
|
||||
"capabilities": {
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue