Files
Zecheng Zhang effd4e3794 Metadata ops: chmod, chown, touch via setattr with namespace overlay (#430)
* feat(metadata): chmod/chown/touch via setattr with namespace overlay fallback

* test(integ): guard cases.py mirage import against the redis.py sys.path shadow

* fix(metadata): review fixes for metadata ops

- bump snapshot format to v3 (symlinks key renamed to nodes)
- disk chmod keeps owner access on the real inode, sidecar reports requested bits
- touch on stat-only mounts reports Read-only file system instead of crashing
- content writes clear overlay mtime/atime so touched times do not freeze
- mv drops the replaced destination's node meta and keys moves into linked dirs under the real path
- glob rm purges node meta via segment-wise pattern match
- symbolic chmod on directories builds on 755
- touch -r resolves relative references against cwd
- extract shared builtins helpers (flag/operand parsing) into shared.py

* fix(metadata): typed setattr kwargs, non-null node stderr for the mypy ratchet
2026-07-13 18:03:50 -07:00

172 lines
5.5 KiB
Python

# ========= Copyright 2026 @ Strukto.AI All Rights Reserved. =========
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# ========= Copyright 2026 @ Strukto.AI All Rights Reserved. =========
import asyncio
from mirage import MountMode, Workspace
from mirage.resource.ssh import SSHConfig, SSHResource
from mirage.types import PathSpec
# ~/.ssh/config:
# Host dev
# HostName ec2-18-224-181-224.us-east-2.compute.amazonaws.com
# IdentityFile ~/.ssh/dev.pem
# User ubuntu
# Port 22
config = SSHConfig(
host="dev",
root="/home/ubuntu/mirage-test",
known_hosts=None,
)
resource = SSHResource(config)
async def main() -> None:
ws = Workspace({"/ssh/": resource}, mode=MountMode.WRITE)
print("=== ls /ssh/ ===")
result = await ws.execute("ls /ssh/")
print(await result.stdout_str())
print("=== stat /ssh/ ===")
result = await ws.execute("stat /ssh/")
print(await result.stdout_str())
print("=== tree /ssh/ ===")
result = await ws.execute("tree /ssh/")
print(await result.stdout_str())
print("=== find /ssh/ ===")
result = await ws.execute("find /ssh/")
print(await result.stdout_str())
print("=== du /ssh/ ===")
result = await ws.execute("du /ssh/")
print(await result.stdout_str())
print("=== cat /ssh/readme.txt ===")
result = await ws.execute("cat /ssh/readme.txt")
print(await result.stdout_str())
print("=== head -n 1 /ssh/data.txt ===")
result = await ws.execute("head -n 1 /ssh/data.txt")
print(await result.stdout_str())
print("=== wc /ssh/readme.txt ===")
result = await ws.execute("wc /ssh/readme.txt")
print(await result.stdout_str())
print("=== grep hello /ssh/readme.txt ===")
result = await ws.execute("grep hello /ssh/readme.txt")
print(await result.stdout_str())
# chmod/chown/touch never hit the SFTP server: attrs land in the
# workspace namespace (durable, snapshot-captured) and merge into
# dispatch-level stat.
print("=== metadata overlay on /ssh/readme.txt ===")
meta_res = await ws.execute('chmod 640 "/ssh/readme.txt"'
' && chown 500:dev "/ssh/readme.txt"'
' && touch -t 202601021530 "/ssh/readme.txt"')
print(f" chmod/chown/touch exit={meta_res.exit_code}")
meta_st, _ = await ws.dispatch("stat",
PathSpec.from_str_path("/ssh/readme.txt"))
print(f" dispatch stat: mode={oct(meta_st.mode)[2:]} uid={meta_st.uid} "
f"gid={meta_st.gid} mtime={meta_st.modified}")
# ── generic text commands (delegate to shared generics) ──
for cmd in [
"sort /ssh/data.txt",
"sort -r /ssh/data.txt",
"nl /ssh/data.txt",
"rev /ssh/data.txt",
"tac /ssh/data.txt",
"cut -c1-4 /ssh/data.txt",
"uniq /ssh/data.txt",
"fold -w 3 /ssh/data.txt",
"head -n 2 /ssh/data.txt",
"tail -n 1 /ssh/data.txt",
"wc -l /ssh/data.txt",
"sha256sum /ssh/data.txt",
]:
print(f"=== {cmd} ===")
result = await ws.execute(cmd)
print(await result.stdout_str())
print("=== cd /ssh/ && ls ===")
await ws.execute("cd /ssh/")
result = await ws.execute("ls")
print(await result.stdout_str())
print("=== pwd ===")
result = await ws.execute("pwd")
print(await result.stdout_str())
print("=== cd /ssh/docs && cat guide.txt ===")
await ws.execute("cd /ssh/docs")
result = await ws.execute("cat guide.txt")
print(await result.stdout_str())
print("=== cd .. && ls ===")
await ws.execute("cd ..")
result = await ws.execute("ls")
print(await result.stdout_str())
print("=== echo hello > /ssh/test.txt ===")
await ws.execute("echo hello > /ssh/test.txt")
print("=== cat /ssh/test.txt ===")
result = await ws.execute("cat /ssh/test.txt")
print(await result.stdout_str())
print("=== cp /ssh/test.txt /ssh/test2.txt ===")
await ws.execute("cp /ssh/test.txt /ssh/test2.txt")
result = await ws.execute("ls /ssh/")
print(await result.stdout_str())
print("=== mv /ssh/test2.txt /ssh/renamed.txt ===")
await ws.execute("mv /ssh/test2.txt /ssh/renamed.txt")
result = await ws.execute("ls /ssh/")
print(await result.stdout_str())
print("=== mkdir /ssh/subdir ===")
await ws.execute("mkdir /ssh/subdir")
print("=== echo world > /ssh/subdir/nested.txt ===")
await ws.execute("echo world > /ssh/subdir/nested.txt")
print("=== tree /ssh/ ===")
result = await ws.execute("tree /ssh/")
print(await result.stdout_str())
print("=== rm /ssh/renamed.txt ===")
await ws.execute("rm /ssh/renamed.txt")
print("=== rm -r /ssh/subdir ===")
await ws.execute("rm -r /ssh/subdir")
print("=== rm /ssh/test.txt ===")
await ws.execute("rm /ssh/test.txt")
print("=== final ls /ssh/ ===")
result = await ws.execute("ls /ssh/")
print(await result.stdout_str())
await resource.accessor.close()
if __name__ == "__main__":
asyncio.run(main())