FAILED tests/server/service/test_local.py::test_delete_workspace - NameError:...
FAILED tests/server/service/test_local.py::test_sync - NameError: name 'Comma...
FAILED tests/server/service/test_local.py::test_status - NameError: name 'Com...
FAILED tests/server/service/test_local.py::test_list_commands - NameError: na...
FAILED tests/server/service/test_local.py::test_register_command - NameError:...
FAILED tests/server/service/test_local.py::test_io_write_read - NameError: na...
FAILED tests/server/service/test_local.py::test_io_stat - NameError: name 'Co...
FAILED tests/server/service/test_local.py::test_io_stat_missing - NameError: ...
FAILED tests/server/service/test_local.py::test_io_readdir - NameError: name ...
FAILED tests/server/service/test_local.py::test_io_mkdir_readdir - NameError:...
FAILED tests/server/service/test_local.py::test_io_unlink - NameError: name '...
FAILED tests/server/service/test_local.py::test_io_rename - NameError: name '...
FAILED tests/server/service/test_local.py::test_io_truncate - NameError: name...
FAILED tests/server/service/test_local.py::test_io_fuse_cat - NameError: name...
FAILED tests/server/service/test_local.py::test_list_fuse_ops - NameError: na...
FAILED tests/server/service/test_local.py::test_register_fuse_op - NameError:...
FAILED tests/server/service/test_local.py::test_register_fuse_op_unknown - Na...
FAILED tests/server/service/test_local.py::test_io_read_uses_workspace_cache
FAILED tests/server/service/test_local.py::test_io_stat_uses_workspace - Name...
23 failed, 3 passed in 0.36s


`CommandStats` is still referenced in `local.py`. Let me check what's happening:


Bash

uv run pytest tests/server/service/test_local.py::test_delete_workspace -v 2>&1 | grep "NameError"

Check exact NameError


E       NameError: name 'CommandRegistry' is not defined
mirage/server/service/local.py:85: NameError
FAILED tests/server/service/test_local.py::test_delete_workspace - NameError:...


I removed `CommandRegistry` from the imports because I thought it was only used for `WorkspaceSession`. But `CommandRegistry` is also used in `LocalService.create_workspace()` on line 126 (approximately): `registry = CommandRegistry()`. Let me check the current state of local.py.


`CommandRegistry` is still used in `LocalService.create_workspace()`. I need to keep it in the imports:


Edit

from mirage.commands.custom.registry import ExternalCommand

from mirage.commands.custom.registry import CommandRegistry, ExternalCommand


The file /Users/agent/strukto/mirage/mirage/server/service/local.py has been updated successfully.

import uuid
from datetime import datetime, timezone

from mirage.backend.loader import load_backend_class
from mirage.cli.config import parse_mount_uri, split_mount_spec
from mirage.commands import COMMANDS, _resolve
from mirage.commands.builtin import nav
from mirage.commands.custom.registry import ExternalCommand
from mirage.fuse import FUSE_OPS
from mirage.fuse.loader import build_registry_from_config, load_fuse_op_class
from mirage.observe.entries import (CommandEntry, CommandResult, DispatchInfo,
                                    ParsedCommand, SessionEntry, WorkspaceInfo)
from mirage.observe.session_log import get_or_create_log
from mirage.runtime.base import _BLOCKED, CommandNotAllowedError
from mirage.server.service.base import MirageService
from mirage.server.service.cache import FileCache
from mirage.server.service.session import WorkspaceSession, _unmount_fuse
from mirage.types import (FileStat, MountMode, RuntimeType, SyncPolicy)
from mirage.workspace import Workspace
from mirage.workspace.consistency import ConsistencyPolicy

class LocalService(MirageService):

    def __init__(self) -> None:
        self._sessions: dict[str, WorkspaceSession] = {}
        self._file_cache = FileCache()

    def _get_session(self, ws_id: str) -> WorkspaceSession:
        session = self._sessions.get(ws_id)
        if session is None:
            raise KeyError(f"workspace {ws_id!r} not found")
        if session.fuse_mounted:
            raise ValueError("not supported for fuse workspaces")
        return session

    def create_workspace(self, config: dict) -> str:
        mode = config.get("mode", "write")
        consistency = config.get("consistency", "cached")
        default_mode = MountMode(mode)
        default_consistency = ConsistencyPolicy(consistency)
        mounts = config.get("mounts", {})

        backends: dict = {}
        for prefix, value in mounts.items():
            if isinstance(value, str):
                backends[prefix] = parse_mount_uri(value)
            else:
                backend_spec = value.get("backend")
                if backend_spec:
                    cls = load_backend_class(backend_spec)
                    backend = cls(**(value.get("args") or {}))
                else:
                    backend = parse_mount_uri(value.get("uri") or "")
                mount_mode = (MountMode(value["mode"])
                              if value.get("mode") else default_mode)
                mount_consistency = (ConsistencyPolicy(value["consistency"])
                                     if value.get("consistency") else
                                     default_consistency)
                if (mount_mode != default_mode
                        or mount_consistency != default_consistency):
                    backends[prefix] = (backend, mount_mode, mount_consistency)
                else:
                    backends[prefix] = backend

        ws = Workspace(
            backends,
            sync_policy=SyncPolicy(config.get("sync_policy", "staged")),
            mode=default_mode,
            consistency=default_consistency,
            ttl_seconds=config.get("ttl_seconds", 300),
        )

        mounts_info: list[dict] = []
        for prefix, value in mounts.items():
            if isinstance(value, str):
                uri = value
            else:
                uri = value.get("uri") or ""
                if not uri and value.get("backend"):
                    uri = f"{value['backend']}://"
            mounts_info.append({"prefix": prefix, "uri": uri})

        ws_id = str(uuid.uuid4())[:8]
        registry = CommandRegistry()
        fuse_ops_config = config.get("fuse_ops") or {}
        fuse_registry = build_registry_from_config(fuse_ops_config)
        runtime = config.get("runtime")
        rt_type = RuntimeType(runtime) if runtime else None

        self._sessions[ws_id] = WorkspaceSession(
            id=ws_id,
            ws=ws,
            registry=registry,
            mode=mode,
            mounts=mounts_info,
            runtime_type=rt_type,
            fuse_registry=fuse_registry,
        )

        log = get_or_create_log(ws_id)
        mount_info = {}
        for m in ws._registry.mounts():
            mount_info[m.prefix] = {
                "type": type(m.backend).__name__,
                "mode": m.mode.value,
            }
        session_entry = SessionEntry(
            timestamp=datetime.now(timezone.utc).isoformat(),
            workspace=WorkspaceInfo(
                mounts=mount_info,
                cache_limit=str(ws._cache.limit),
                runtime_type=rt_type.value if rt_type else None,
            ),
            commands=registry.list_commands(),
        )
        log.write_session(session_entry)
        return ws_id

    def delete_workspace(self, ws_id: str) -> None:
        session = self._sessions.get(ws_id)
        if session is None:
            raise KeyError(f"workspace {ws_id!r} not found")
        if session.fuse_mounted and session.mountpoint:
            _unmount_fuse(session.mountpoint, session.pid)
        self._file_cache.clear(ws_id)
        del self._sessions[ws_id]

    def list_workspaces(self) -> list[dict]:
        return [{
            "id": s.id,
            "fuse_mounted": s.fuse_mounted,
            "mode": s.mode,
            "mountpoint": s.mountpoint,
            "mounts": s.mounts,
            "runtime": s.runtime_type.value if s.runtime_type else None,
        } for s in self._sessions.values()]

    def exec(
        self,
        ws_id: str,
        command: str,
        cwd: str | None = None,
        stdin: bytes | None = None,
        input_files: dict[str, tuple[str, bytes | None]] | None = None,
    ) -> tuple[bool, str, dict[str, bytes] | None, dict[str, str] | None]:
        session = self._get_session(ws_id)
        if cwd is not None:
            session.cwd = cwd

        cache_status: dict[str, str] = {}
        if input_files:
            for path, (checksum, data) in input_files.items():
                hit, _ = self._file_cache.get(ws_id, path, checksum)
                if hit:
                    cache_status[path] = "hit"
                elif data is not None:
                    self._file_cache.put(ws_id, path, checksum, data)
                    session.ws.write(path, data)
                    cache_status[path] = "miss"
                else:
                    return (False, f"cache miss: {path}", None, None)

        cmd_name = command.strip().split()[0] if command.strip() else ""
        session.command_stats.total_commands += 1
        session.command_stats.command_counts[cmd_name] = (
            session.command_stats.command_counts.get(cmd_name, 0) + 1)
        session.command_stats.last_command = command
        session.command_stats.last_timestamp = datetime.now(
            timezone.utc).isoformat()
        t0 = time.monotonic()
        try:
            if session.runtime_type is not None and cmd_name in _BLOCKED:
                raise CommandNotAllowedError(
                    f"{cmd_name!r} is not allowed in this runtime")
            output = session.registry.run(session.ws,
                                          command,
                                          cwd=session.cwd,
                                          stdin=stdin)
            duration_ms = int((time.monotonic() - t0) * 1000)
            if command.strip().startswith("cd "):
                parts = command.strip().split(None, 1)
                if len(parts) > 1:
                    session.cwd = nav.cd(session.ws, session.cwd,
                                         _resolve(session.cwd, parts[1]))
            args = command.strip().split()[1:] if command.strip() else []
            source = "builtin" if cmd_name in COMMANDS else "external"
            log = get_or_create_log(ws_id)
            entry = CommandEntry(
                timestamp=datetime.now(timezone.utc).isoformat(),
                raw=command,
                parsed=ParsedCommand(
                    pipeline=[command],
                    args={cmd_name: args},
                ),
                dispatch=[
                    DispatchInfo(
                        command=cmd_name,
                        handler=f"_{cmd_name}"
                        if source == "builtin" else cmd_name,
                        source=source,
                    )
                ],
                result=CommandResult(
                    exit_code=0,
                    stdout_bytes=len(output.encode()) if output else 0,
                    duration_ms=duration_ms,
                ),
            )
            log.write_command(entry)

            return (True, output, None, cache_status or None)
        except Exception as e:
            duration_ms = int((time.monotonic() - t0) * 1000)
            session.command_stats.total_errors += 1
            log = get_or_create_log(ws_id)
            entry = CommandEntry(
                timestamp=datetime.now(timezone.utc).isoformat(),
                raw=command,
                result=CommandResult(exit_code=1,
                                     stdout_bytes=0,
                                     duration_ms=duration_ms),
            )
            log.write_command(entry)
            return (False, str(e), None, None)

    def list_commands(self, ws_id: str) -> list[str]:
        session = self._get_session(ws_id)
        return session.registry.list_commands()

    def register_command(self,
                         ws_id: str,
                         name: str,
                         exec_str: str,
                         description: str = "") -> None:
        session = self._get_session(ws_id)
        session.registry.register(
            ExternalCommand(name=name, exec=exec_str, description=description))

    def sync(self, ws_id: str) -> list[dict]:
        session = self._get_session(ws_id)
        results = session.ws.sync()
        return [{"path": r.path, "status": r.status} for r in results]

    def status(self, ws_id: str) -> list[dict]:
        session = self._get_session(ws_id)
        inodes = session.ws.status()
        return [{
            "path": i.virtual_path,
            "dirty": i.dirty,
            "size": i.size
        } for i in inodes]

    # ── File I/O (backend-level) ─────────────────────────────────────────

    def io_read(self, ws_id: str, path: str, offset: int, size: int) -> bytes:
        session = self._get_session(ws_id)
        return session.ws.read(path, offset, size)

    def io_write(self, ws_id: str, path: str, offset: int, data: bytes) -> int:
        session = self._get_session(ws_id)
        backend, backend_path, _ = session.ws._registry.resolve(path)
        return backend.write(backend_path, offset, data)

    def io_stat(self, ws_id: str, path: str) -> FileStat:
        session = self._get_session(ws_id)
        return session.ws.stat(path)

    def io_readdir(self,
                   ws_id: str,
                   path: str,
                   cursor: str | None = None) -> tuple[list[str], str | None]:
        session = self._get_session(ws_id)
        backend, backend_path, _ = session.ws._registry.resolve(path)
        return backend.readdir(backend_path, cursor)

    def io_create(self, ws_id: str, path: str) -> None:
        session = self._get_session(ws_id)
        backend, backend_path, _ = session.ws._registry.resolve(path)
        backend.create(backend_path)

    def io_unlink(self, ws_id: str, path: str) -> None:
        session = self._get_session(ws_id)
        backend, backend_path, _ = session.ws._registry.resolve(path)
        backend.unlink(backend_path)

    def io_mkdir(self, ws_id: str, path: str) -> None:
        session = self._get_session(ws_id)
        backend, backend_path, _ = session.ws._registry.resolve(path)
        backend.mkdir(backend_path)

    def io_rmdir(self, ws_id: str, path: str) -> None:
        session = self._get_session(ws_id)
        backend, backend_path, _ = session.ws._registry.resolve(path)
        backend.rmdir(backend_path)

    def io_rename(self, ws_id: str, src: str, dst: str) -> None:
        session = self._get_session(ws_id)
        backend, src_path, _ = session.ws._registry.resolve(src)
        _, dst_path, _ = session.ws._registry.resolve(dst)
        backend.rename(src_path, dst_path)

    def io_truncate(self, ws_id: str, path: str, size: int) -> None:
        session = self._get_session(ws_id)
        backend, backend_path, _ = session.ws._registry.resolve(path)
        backend.truncate(backend_path, size)

    def io_fuse_cat(self, ws_id: str, path: str) -> bytes:
        session = self._get_session(ws_id)
        st = session.ws.stat(path)
        op = session.fuse_registry.resolve(path, st.size or 0, session.ws)
        ctx = op.on_open(session.ws, path, st.size or 0)
        return op.read(session.ws, path, 0, st.size or 0, ctx)

    # ── FuseOp management ────────────────────────────────────────────────

    def list_fuse_ops(self, ws_id: str) -> list[dict]:
        session = self._get_session(ws_id)
        return session.fuse_registry.list_ops()

    def register_fuse_op(self, ws_id: str, pattern: str, handler: str) -> None:
        session = self._get_session(ws_id)
        op = FUSE_OPS.get(handler)
        if op is None:
            try:
                cls = load_fuse_op_class(handler)
                op = cls()
            except (ValueError, Exception) as e:
                raise ValueError(f"unknown handler: {handler} ({e})")
        session.fuse_registry.register(pattern, op)

    # ── FUSE-specific (not part of MirageService ABC) ────────────────────

    def register_fuse(self,
                      mountpoint: str,
                      pid: int,
                      mount_specs: list[str] | None = None,
                      runtime: str | None = None) -> str:
        fuse_mounts: list[dict] = []
        for spec in (mount_specs or []):
            try:
                uri, prefix = split_mount_spec(spec)
                fuse_mounts.append({"prefix": prefix, "uri": uri})
            except ValueError:
                pass
        ws_id = str(uuid.uuid4())[:8]
        rt_type = RuntimeType(runtime) if runtime else None
        self._sessions[ws_id] = WorkspaceSession(
            id=ws_id,
            ws=None,
            registry=None,
            fuse_mounted=True,
            mountpoint=mountpoint,
            pid=pid,
            mounts=fuse_mounts,
            runtime_type=rt_type,
        )
        mount_info = {m["prefix"]: {"type": m["uri"]} for m in fuse_mounts}
        log = get_or_create_log(ws_id)
        session_entry = SessionEntry(
            timestamp=datetime.now(timezone.utc).isoformat(),
            workspace=WorkspaceInfo(
                mounts=mount_info,
                runtime_type=rt_type.value if rt_type else None,
            ),
        )
        log.write_session(session_entry)
        return ws_id

    def report_fuse_stats(self,
                          mountpoint: str,
                          status: dict,
                          transfers: dict | None = None,
                          ops: list[dict] | None = None) -> bool:
        for s in self._sessions.values():
            if s.fuse_mounted and s.mountpoint == mountpoint:
                s.reported_status = status
                s.reported_transfers = transfers or {}
                if ops:
                    log = get_or_create_log(s.id)
                    for op in ops:
                        log._append(op)
                return True
        return False

-from mirage.commands.custom.registry import ExternalCommand

+from mirage.commands.custom.registry import CommandRegistry, ExternalCommand


Bash

uv run pytest tests/server/service/test_local.py -q --no-header 2>&1 | tail -5

Rerun service tests


TOTAL                                                    4730   3497    26%
=========================== short test summary info ============================
FAILED tests/server/service/test_local.py::test_exec_touch_ls - NameError: na...
FAILED tests/server/service/test_local.py::test_exec_blocked_with_runtime - N...
FAILED tests/server/service/test_local.py::test_exec_not_blocked_without_runtime


uv run pytest tests/server/service/test_local.py::test_exec_touch_ls 2>&1 | grep "NameError"

Check remaining NameError


E       NameError: name 'time' is not defined. Did you forget to import 'time'
mirage/server/service/local.py:171: NameError
FAILED tests/server/service/test_local.py::test_exec_touch_ls - NameError: na...


   165→        session.command_stats.total_commands += 1
   166→        session.command_stats.command_counts[cmd_name] = (
   167→            session.command_stats.command_counts.get(cmd_name, 0) + 1)
   168→        session.command_stats.last_command = command
   169→        session.command_stats.last_timestamp = datetime.now(
   170→            timezone.utc).isoformat()
   171→        t0 = time.monotonic()
   172→        try:
   173→            if session.runtime_type is not None and cmd_name in _BLOCKED:
   174→                raise CommandNotAllowedError(
   175→                    f"{cmd_name!r} is not allowed in this runtime")
   176→            output = session.registry.run(session.ws,
   177→                                          command,
   178→                                          cwd=session.cwd,
   179→                                          stdin=stdin)

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

        session.command_stats.total_commands += 1
        session.command_stats.command_counts[cmd_name] = (
            session.command_stats.command_counts.get(cmd_name, 0) + 1)
        session.command_stats.last_command = command
        session.command_stats.last_timestamp = datetime.now(
            timezone.utc).isoformat()
        t0 = time.monotonic()
        try:
            if session.runtime_type is not None and cmd_name in _BLOCKED:
                raise CommandNotAllowedError(
                    f"{cmd_name!r} is not allowed in this runtime")
            output = session.registry.run(session.ws,
                                          command,
                                          cwd=session.cwd,
                                          stdin=stdin)


`time` is also used in `exec()` for timing. Need to add it back:


Edit

import uuid
from datetime import datetime, timezone

import time
import uuid
from datetime import datetime, timezone


import time
import uuid
from datetime import datetime, timezone

import uuid
from datetime import datetime, timezone

from mirage.backend.loader import load_backend_class
from mirage.cli.config import parse_mount_uri, split_mount_spec
from mirage.commands import COMMANDS, _resolve
from mirage.commands.builtin import nav
from mirage.commands.custom.registry import CommandRegistry, ExternalCommand
from mirage.fuse import FUSE_OPS
from mirage.fuse.loader import build_registry_from_config, load_fuse_op_class
from mirage.observe.entries import (CommandEntry, CommandResult, DispatchInfo,
                                    ParsedCommand, SessionEntry, WorkspaceInfo)
from mirage.observe.session_log import get_or_create_log
from mirage.runtime.base import _BLOCKED, CommandNotAllowedError
from mirage.server.service.base import MirageService
from mirage.server.service.cache import FileCache
from mirage.server.service.session import WorkspaceSession, _unmount_fuse
from mirage.types import (FileStat, MountMode, RuntimeType, SyncPolicy)
from mirage.workspace import Workspace
from mirage.workspace.consistency import ConsistencyPolicy

class LocalService(MirageService):

    def __init__(self) -> None:
        self._sessions: dict[str, WorkspaceSession] = {}
        self._file_cache = FileCache()

    def _get_session(self, ws_id: str) -> WorkspaceSession:
        session = self._sessions.get(ws_id)
        if session is None:
            raise KeyError(f"workspace {ws_id!r} not found")
        if session.fuse_mounted:
            raise ValueError("not supported for fuse workspaces")
        return session

    def create_workspace(self, config: dict) -> str:
        mode = config.get("mode", "write")
        consistency = config.get("consistency", "cached")
        default_mode = MountMode(mode)
        default_consistency = ConsistencyPolicy(consistency)
        mounts = config.get("mounts", {})

        backends: dict = {}
        for prefix, value in mounts.items():
            if isinstance(value, str):
                backends[prefix] = parse_mount_uri(value)
            else:
                backend_spec = value.get("backend")
                if backend_spec:
                    cls = load_backend_class(backend_spec)
                    backend = cls(**(value.get("args") or {}))
                else:
                    backend = parse_mount_uri(value.get("uri") or "")
                mount_mode = (MountMode(value["mode"])
                              if value.get("mode") else default_mode)
                mount_consistency = (ConsistencyPolicy(value["consistency"])
                                     if value.get("consistency") else
                                     default_consistency)
                if (mount_mode != default_mode
                        or mount_consistency != default_consistency):
                    backends[prefix] = (backend, mount_mode, mount_consistency)
                else:
                    backends[prefix] = backend

        ws = Workspace(
            backends,
            sync_policy=SyncPolicy(config.get("sync_policy", "staged")),
            mode=default_mode,
            consistency=default_consistency,
            ttl_seconds=config.get("ttl_seconds", 300),
        )

        mounts_info: list[dict] = []
        for prefix, value in mounts.items():
            if isinstance(value, str):
                uri = value
            else:
                uri = value.get("uri") or ""
                if not uri and value.get("backend"):
                    uri = f"{value['backend']}://"
            mounts_info.append({"prefix": prefix, "uri": uri})

        ws_id = str(uuid.uuid4())[:8]
        registry = CommandRegistry()
        fuse_ops_config = config.get("fuse_ops") or {}
        fuse_registry = build_registry_from_config(fuse_ops_config)
        runtime = config.get("runtime")
        rt_type = RuntimeType(runtime) if runtime else None

        self._sessions[ws_id] = WorkspaceSession(
            id=ws_id,
            ws=ws,
            registry=registry,
            mode=mode,
            mounts=mounts_info,
            runtime_type=rt_type,
            fuse_registry=fuse_registry,
        )

        log = get_or_create_log(ws_id)
        mount_info = {}
        for m in ws._registry.mounts():
            mount_info[m.prefix] = {
                "type": type(m.backend).__name__,
                "mode": m.mode.value,
            }
        session_entry = SessionEntry(
            timestamp=datetime.now(timezone.utc).isoformat(),
            workspace=WorkspaceInfo(
                mounts=mount_info,
                cache_limit=str(ws._cache.limit),
                runtime_type=rt_type.value if rt_type else None,
            ),
            commands=registry.list_commands(),
        )
        log.write_session(session_entry)
        return ws_id

    def delete_workspace(self, ws_id: str) -> None:
        session = self._sessions.get(ws_id)
        if session is None:
            raise KeyError(f"workspace {ws_id!r} not found")
        if session.fuse_mounted and session.mountpoint:
            _unmount_fuse(session.mountpoint, session.pid)
        self._file_cache.clear(ws_id)
        del self._sessions[ws_id]

    def list_workspaces(self) -> list[dict]:
        return [{
            "id": s.id,
            "fuse_mounted": s.fuse_mounted,
            "mode": s.mode,
            "mountpoint": s.mountpoint,
            "mounts": s.mounts,
            "runtime": s.runtime_type.value if s.runtime_type else None,
        } for s in self._sessions.values()]

    def exec(
        self,
        ws_id: str,
        command: str,
        cwd: str | None = None,
        stdin: bytes | None = None,
        input_files: dict[str, tuple[str, bytes | None]] | None = None,
    ) -> tuple[bool, str, dict[str, bytes] | None, dict[str, str] | None]:
        session = self._get_session(ws_id)
        if cwd is not None:
            session.cwd = cwd

        cache_status: dict[str, str] = {}
        if input_files:
            for path, (checksum, data) in input_files.items():
                hit, _ = self._file_cache.get(ws_id, path, checksum)
                if hit:
                    cache_status[path] = "hit"
                elif data is not None:
                    self._file_cache.put(ws_id, path, checksum, data)
                    session.ws.write(path, data)
                    cache_status[path] = "miss"
                else:
                    return (False, f"cache miss: {path}", None, None)

        cmd_name = command.strip().split()[0] if command.strip() else ""
        session.command_stats.total_commands += 1
        session.command_stats.command_counts[cmd_name] = (
            session.command_stats.command_counts.get(cmd_name, 0) + 1)
        session.command_stats.last_command = command
        session.command_stats.last_timestamp = datetime.now(
            timezone.utc).isoformat()
        t0 = time.monotonic()
        try:
            if session.runtime_type is not None and cmd_name in _BLOCKED:
                raise CommandNotAllowedError(
                    f"{cmd_name!r} is not allowed in this runtime")
            output = session.registry.run(session.ws,
                                          command,
                                          cwd=session.cwd,
                                          stdin=stdin)
            duration_ms = int((time.monotonic() - t0) * 1000)
            if command.strip().startswith("cd "):
                parts = command.strip().split(None, 1)
                if len(parts) > 1:
                    session.cwd = nav.cd(session.ws, session.cwd,
                                         _resolve(session.cwd, parts[1]))
            args = command.strip().split()[1:] if command.strip() else []
            source = "builtin" if cmd_name in COMMANDS else "external"
            log = get_or_create_log(ws_id)
            entry = CommandEntry(
                timestamp=datetime.now(timezone.utc).isoformat(),
                raw=command,
                parsed=ParsedCommand(
                    pipeline=[command],
                    args={cmd_name: args},
                ),
                dispatch=[
                    DispatchInfo(
                        command=cmd_name,
                        handler=f"_{cmd_name}"
                        if source == "builtin" else cmd_name,
                        source=source,
                    )
                ],
                result=CommandResult(
                    exit_code=0,
                    stdout_bytes=len(output.encode()) if output else 0,
                    duration_ms=duration_ms,
                ),
            )
            log.write_command(entry)

            return (True, output, None, cache_status or None)
        except Exception as e:
            duration_ms = int((time.monotonic() - t0) * 1000)
            session.command_stats.total_errors += 1
            log = get_or_create_log(ws_id)
            entry = CommandEntry(
                timestamp=datetime.now(timezone.utc).isoformat(),
                raw=command,
                result=CommandResult(exit_code=1,
                                     stdout_bytes=0,
                                     duration_ms=duration_ms),
            )
            log.write_command(entry)
            return (False, str(e), None, None)

    def list_commands(self, ws_id: str) -> list[str]:
        session = self._get_session(ws_id)
        return session.registry.list_commands()

    def register_command(self,
                         ws_id: str,
                         name: str,
                         exec_str: str,
                         description: str = "") -> None:
        session = self._get_session(ws_id)
        session.registry.register(
            ExternalCommand(name=name, exec=exec_str, description=description))

    def sync(self, ws_id: str) -> list[dict]:
        session = self._get_session(ws_id)
        results = session.ws.sync()
        return [{"path": r.path, "status": r.status} for r in results]

    def status(self, ws_id: str) -> list[dict]:
        session = self._get_session(ws_id)
        inodes = session.ws.status()
        return [{
            "path": i.virtual_path,
            "dirty": i.dirty,
            "size": i.size
        } for i in inodes]

    # ── File I/O (backend-level) ─────────────────────────────────────────

    def io_read(self, ws_id: str, path: str, offset: int, size: int) -> bytes:
        session = self._get_session(ws_id)
        return session.ws.read(path, offset, size)

    def io_write(self, ws_id: str, path: str, offset: int, data: bytes) -> int:
        session = self._get_session(ws_id)
        backend, backend_path, _ = session.ws._registry.resolve(path)
        return backend.write(backend_path, offset, data)

    def io_stat(self, ws_id: str, path: str) -> FileStat:
        session = self._get_session(ws_id)
        return session.ws.stat(path)

    def io_readdir(self,
                   ws_id: str,
                   path: str,
                   cursor: str | None = None) -> tuple[list[str], str | None]:
        session = self._get_session(ws_id)
        backend, backend_path, _ = session.ws._registry.resolve(path)
        return backend.readdir(backend_path, cursor)

    def io_create(self, ws_id: str, path: str) -> None:
        session = self._get_session(ws_id)
        backend, backend_path, _ = session.ws._registry.resolve(path)
        backend.create(backend_path)

    def io_unlink(self, ws_id: str, path: str) -> None:
        session = self._get_session(ws_id)
        backend, backend_path, _ = session.ws._registry.resolve(path)
        backend.unlink(backend_path)

    def io_mkdir(self, ws_id: str, path: str) -> None:
        session = self._get_session(ws_id)
        backend, backend_path, _ = session.ws._registry.resolve(path)
        backend.mkdir(backend_path)

    def io_rmdir(self, ws_id: str, path: str) -> None:
        session = self._get_session(ws_id)
        backend, backend_path, _ = session.ws._registry.resolve(path)
        backend.rmdir(backend_path)

    def io_rename(self, ws_id: str, src: str, dst: str) -> None:
        session = self._get_session(ws_id)
        backend, src_path, _ = session.ws._registry.resolve(src)
        _, dst_path, _ = session.ws._registry.resolve(dst)
        backend.rename(src_path, dst_path)

    def io_truncate(self, ws_id: str, path: str, size: int) -> None:
        session = self._get_session(ws_id)
        backend, backend_path, _ = session.ws._registry.resolve(path)
        backend.truncate(backend_path, size)

    def io_fuse_cat(self, ws_id: str, path: str) -> bytes:
        session = self._get_session(ws_id)
        st = session.ws.stat(path)
        op = session.fuse_registry.resolve(path, st.size or 0, session.ws)
        ctx = op.on_open(session.ws, path, st.size or 0)
        return op.read(session.ws, path, 0, st.size or 0, ctx)

    # ── FuseOp management ────────────────────────────────────────────────

    def list_fuse_ops(self, ws_id: str) -> list[dict]:
        session = self._get_session(ws_id)
        return session.fuse_registry.list_ops()

    def register_fuse_op(self, ws_id: str, pattern: str, handler: str) -> None:
        session = self._get_session(ws_id)
        op = FUSE_OPS.get(handler)
        if op is None:
            try:
                cls = load_fuse_op_class(handler)
                op = cls()
            except (ValueError, Exception) as e:
                raise ValueError(f"unknown handler: {handler} ({e})")
        session.fuse_registry.register(pattern, op)

    # ── FUSE-specific (not part of MirageService ABC) ────────────────────

    def register_fuse(self,
                      mountpoint: str,
                      pid: int,
                      mount_specs: list[str] | None = None,
                      runtime: str | None = None) -> str:
        fuse_mounts: list[dict] = []
        for spec in (mount_specs or []):
            try:
                uri, prefix = split_mount_spec(spec)
                fuse_mounts.append({"prefix": prefix, "uri": uri})
            except ValueError:
                pass
        ws_id = str(uuid.uuid4())[:8]
        rt_type = RuntimeType(runtime) if runtime else None
        self._sessions[ws_id] = WorkspaceSession(
            id=ws_id,
            ws=None,
            registry=None,
            fuse_mounted=True,
            mountpoint=mountpoint,
            pid=pid,
            mounts=fuse_mounts,
            runtime_type=rt_type,
        )
        mount_info = {m["prefix"]: {"type": m["uri"]} for m in fuse_mounts}
        log = get_or_create_log(ws_id)
        session_entry = SessionEntry(
            timestamp=datetime.now(timezone.utc).isoformat(),
            workspace=WorkspaceInfo(
                mounts=mount_info,
                runtime_type=rt_type.value if rt_type else None,
            ),
        )
        log.write_session(session_entry)
        return ws_id

    def report_fuse_stats(self,
                          mountpoint: str,
                          status: dict,
                          transfers: dict | None = None,
                          ops: list[dict] | None = None) -> bool:
        for s in self._sessions.values():
            if s.fuse_mounted and s.mountpoint == mountpoint:
                s.reported_status = status
                s.reported_transfers = transfers or {}
                if ops:
                    log = get_or_create_log(s.id)
                    for op in ops:
                        log._append(op)
                return True
        return False


Bash

uv run pytest tests/server/service/test_local.py -q --no-header 2>&1 | tail -5

Rerun service tests


mirage/workspace/mount.py                                  35      4    89%   41-42, 59, 66
mirage/workspace/sync.py                                   56     18    68%   27-31, 45-48, 60-63, 78, 91-93, 111
mirage/workspace/workspace.py                             248     88    65%   18-19, 22, 25, 69, 71-72, 88, 91-92, 99-106, 111-121, 150-151, 162, 164-165, 170, 172, 176, 180-181, 199, 204-205, 208-209, 214-216, 242-243, 255-256, 259-261, 264-271, 274-294, 297-300, 323-324, 329, 332-333, 336-338, 342, 352, 357, 374
-------------------------------------------------------------------------------------
TOTAL                                                    4731   3388    28%


uv run pytest tests/server/service/test_local.py -q --no-header 2>&1 | grep -E "passed|failed|error"

Check test results summary


uv run pytest tests/server/service/test_local.py --no-header --no-cov 2>&1 | tail -3

Check test results without coverage


..........................                                               [100%]
26 passed in 0.03s


All 26 tests pass. Now run the full suite:


uv run pytest --no-cov -q 2>&1 | tail -5

Run full test suite without coverage


........................................................................ [ 65%]
........................................................................ [ 76%]
........................................................................ [ 87%]
........................................................................ [ 98%]
.........                                                                [100%]


uv run pytest --no-cov -q 2>&1 | grep -E "passed|failed|error|warning"

Get test summary


Get final test line


656 passed, 1 skipped in 2.26s


TodoWrite

Create mirage/server/service/session.py

Creating session.py with WorkspaceSession and _unmount_fuse

Update local.py to import from session.py

Verify tests pass


Todos have been modified successfully. Ensure that you continue to use the todo list to track your progress. Please proceed with the current tasks if applicable

Create mirage/server/service/session.py

Creating session.py with WorkspaceSession and _unmount_fuse

Update local.py to import from session.py

Verify tests pass

Create mirage/server/service/session.py

Verify tests pass


656 passed, 1 skipped. Done.

Created [mirage/server/service/session.py](mirage/server/service/session.py) with `WorkspaceSession` and `_unmount_fuse`, and updated [mirage/server/service/local.py](mirage/server/service/local.py) to import from it. The only corrections needed were keeping `CommandRegistry` and `time` in `local.py` since they're still used by `create_workspace()` and `exec()` respectively.


<ide_opened_file>The user opened the file /Users/agent/strukto/mirage/plan/plan.md in the IDE. This may or may not be related to the current task.</ide_opened_file>

also for all the time change to utc?

also what's the dependency now?


The user has two questions:
1. "for all the time change to utc?" - They want to change all `time.monotonic()` calls to use UTC time (probably `datetime.now(timezone.utc).timestamp()` or similar)
2. "what's the dependency now?" - They want to see the current inter-module dependency diagram

Let me first look at the current state of `local.py` and `session.py` to understand where `time.monotonic()` is used, and then look at the broader dependency picture.

For the "time change to utc" question - looking at `session.py`:
- `created_at: float = Field(default_factory=time.monotonic)` - this uses `time.monotonic()` which is relative time, not wall clock

- I'm also seeing `time.monotonic()` calls in `workspace.py` for `_created_at` and in `local.py` for measuring execution duration. The user probably wants to replace these with actual UTC timestamps instead of monotonic/relative time.

- Looking at how `created_at` fields are actually used: they're referenced in `is_fresh()` for TTL checks and in `WorkspaceSession` and `Workspace` classes. I need to understand whether switching to UTC wall clock time would break the TTL comparison logic, since monotonic time is typically better for measuring elapsed time.


Bash

grep -rn "time\.monotonic\|created_at\|cached_at" mirage/ --include="*.py" | grep -v "__pycache__"

Find all time.monotonic usages


mirage/workspace/sync.py:75:        t0 = time.monotonic()
mirage/workspace/sync.py:81:            duration_ms = int((time.monotonic() - t0) * 1000)
mirage/workspace/sync.py:92:            duration_ms = int((time.monotonic() - t0) * 1000)
mirage/workspace/cache/store.py:41:            cached_at=time.monotonic(),
mirage/workspace/cache/entry.py:6:    cached_at: float
mirage/workspace/consistency.py:28:        if (time.monotonic() - entry.cached_at) < ttl_seconds:
mirage/workspace/workspace.py:65:        self._created_at: float = time.monotonic()
mirage/workspace/workspace.py:125:        t0 = time.monotonic()
mirage/workspace/workspace.py:127:        duration_ms = int((time.monotonic() - t0) * 1000)
mirage/server/fastapi/daemon.py:21:    set_server_start_time(time.monotonic())
mirage/server/service/local.py:172:        t0 = time.monotonic()
mirage/server/service/local.py:181:            duration_ms = int((time.monotonic() - t0) * 1000)
mirage/server/service/local.py:215:            duration_ms = int((time.monotonic() - t0) * 1000)
mirage/server/service/session.py:30:    created_at: float = Field(default_factory=time.monotonic)
mirage/observe/inspector.py:41:    uptime_s = int(time.monotonic() - _server_start_time)


Looking at the usage patterns:
1. **Duration measurement** (`t0 = time.monotonic()` + `time.monotonic() - t0`): These should stay as monotonic - they're measuring elapsed time.
2. **TTL checking** (`cached_at` + `time.monotonic() - entry.cached_at` in `consistency.py`): This is comparing elapsed time since caching. Changing to UTC here requires computing `(datetime.now(timezone.utc).timestamp() - entry.cached_at)` instead. This is a valid approach but the current approach is fine too.

3. **`created_at` fields** (workspace, session, daemon start): These are actual timestamps representing when something was created, not durations. Using `time.monotonic()` here means they can't be compared to wall clock times or displayed meaningfully in logs. The user's request to switch to UTC probably applies here - fields like `WorkspaceSession.created_at` and `Workspace._created_at` should use UTC timestamps instead so they're actually useful for logging and display purposes.

But I need to be careful with the duration-based fields. For `cached_at` in the cache store, it's used in a TTL check that subtracts it from the current `time.monotonic()` value, so if I change it to UTC I'd break that comparison. Same issue with `_server_start_time` in the daemon - it's used to calculate uptime by subtracting it from the current monotonic time, so switching that to UTC would also require updating the uptime calculation in inspector.py.

The real distinction here is that duration measurements within a single process should stick with `time.monotonic()` since it's guaranteed to be monotonic and won't jump backward, whereas user-facing timestamps like `created_at` should use UTC. The user's request to change everything to UTC seems to assume all timestamps are the same type, but I need to identify which ones are actually duration pairs versus absolute timestamps.

For the absolute timestamp fields, I could represent them as Unix timestamps using `datetime.now(timezone.utc).timestamp()`, which keeps them as floats but now meaningful as wall-clock time. This would mean updating the TTL check logic to use `time.time()` instead of `time.monotonic()` for those comparisons.

Now I'm mapping out the specific file changes needed: updating the cache store to use UTC timestamps when recording `cached_at`, keeping the type as float in the entry definition, and adjusting the consistency check to compare against the new UTC-based timestamps instead of monotonic time. I see the distinction now—duration pairs using `time.monotonic()` are correct for measuring elapsed time, but wall-clock timestamps for creation times should use UTC epoch seconds instead. So I need to update the "creation time" and "cached at" fields across the codebase to use `datetime.now(timezone.utc).timestamp()`, while leaving the duration measurement pairs alone.

Now I'm checking daemon.py and inspector.py to see where server start times are recorded.


     1→import os
     2→import socket
     3→import time
     4→from pathlib import Path
     5→
     6→import uvicorn
     7→
     8→from mirage.observe import set_server_start_time
     9→from mirage.server.constants import DEFAULT_SOCKET
    10→from mirage.server.fastapi.app import app
    11→
    12→
    13→def run(socket_path: str = DEFAULT_SOCKET) -> None:
    14→    Path(socket_path).parent.mkdir(parents=True, exist_ok=True)
    15→    if os.path.exists(socket_path):
    16→        os.unlink(socket_path)
    17→
    18→    uds_socket = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
    19→    uds_socket.bind(socket_path)
    20→
    21→    set_server_start_time(time.monotonic())
    22→    config = uvicorn.Config(app, fd=uds_socket.fileno(), log_level="warning")
    23→    server = uvicorn.Server(config)
    24→    server.run()
    25→
    26→    if os.path.exists(socket_path):
    27→        os.unlink(socket_path)
    28→
    29→
    30→if __name__ == "__main__":
    31→    run()
    32→

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

import os
import socket
import time
from pathlib import Path

import uvicorn

from mirage.observe import set_server_start_time
from mirage.server.constants import DEFAULT_SOCKET
from mirage.server.fastapi.app import app

def run(socket_path: str = DEFAULT_SOCKET) -> None:
    Path(socket_path).parent.mkdir(parents=True, exist_ok=True)
    if os.path.exists(socket_path):
        os.unlink(socket_path)

    uds_socket = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
    uds_socket.bind(socket_path)

    set_server_start_time(time.monotonic())
    config = uvicorn.Config(app, fd=uds_socket.fileno(), log_level="warning")
    server = uvicorn.Server(config)
    server.run()

    if os.path.exists(socket_path):
        os.unlink(socket_path)

if __name__ == "__main__":
    run()


     1→import os
     2→import resource
     3→import time
     4→from typing import TYPE_CHECKING, Any
     5→
     6→from mirage.backend.local.memory import MemoryBackend
     7→from mirage.commands import COMMAND_COST, COMMANDS
     8→from mirage.types import CostLevel
     9→
    10→if TYPE_CHECKING:
    11→    from mirage.workspace import Workspace
    12→
    13→_server_start_time: float = 0.0
    14→
    15→
    16→def _count_dirty(ws: "Workspace") -> int:
    17→    memory_mounts = {
    18→        m.prefix
    19→        for m in ws._registry.mounts() if isinstance(m.backend, MemoryBackend)
    20→    }
    21→    return len([
    22→        i for i in ws._tracker.dirty() if i.backend_mount not in memory_mounts
    23→    ])
    24→
    25→
    26→def set_server_start_time(t: float) -> None:
    27→    global _server_start_time
    28→    _server_start_time = t
    29→
    30→
    31→def global_status(sessions: dict[str, Any]) -> dict:
    32→    rss = resource.getrusage(resource.RUSAGE_SELF).ru_maxrss
    33→    if os.uname().sysname == "Darwin":
    34→        rss_bytes = rss
    35→    else:
    36→        rss_bytes = rss * 1024
    37→    total_cache = 0
    38→    for s in sessions.values():
    39→        if s.ws is not None:
    40→            total_cache += s.ws._cache.size
    41→    uptime_s = int(time.monotonic() - _server_start_time)
    42→    return {
    43→        "rss_bytes": rss_bytes,
    44→        "total_sessions": len(sessions),
    45→        "total_cache_bytes": total_cache,
    46→        "uptime_seconds": uptime_s,
    47→    }
    48→
    49→
    50→def list_sessions(sessions: dict[str, Any]) -> list[dict]:
    51→    results = []
    52→    for s in sessions.values():
    53→        entry: dict[str, Any] = {
    54→            "id": s.id,
    55→            "fuse_mounted": s.fuse_mounted,
    56→            "mode": s.mode,
    57→            "mounts": s.mounts,
    58→        }
    59→        if s.ws is not None:
    60→            entry["cache_used"] = s.ws._cache.size
    61→            entry["cache_limit"] = s.ws._cache.limit
    62→            entry["dirty_count"] = len(s.ws._tracker.dirty())
    63→            entry["total_commands"] = s.command_stats.total_commands
    64→        results.append(entry)
    65→    return results
    66→
    67→
    68→def workspace_status(session: Any) -> dict:
    69→    ws: Workspace = session.ws
    70→    backends_health = []
    71→    for mount in ws._registry.mounts():
    72→        backends_health.append({
    73→            "mount": mount.prefix,
    74→            "backend": type(mount.backend).__name__,
    75→        })
    76→    return {
    77→        "cache_used": ws._cache.size,
    78→        "cache_limit": ws._cache.limit,
    79→        "dirty_inodes": _count_dirty(ws),
    80→        "backends": backends_health,
    81→        "last_command": session.command_stats.last_command,
    82→        "total_commands": session.command_stats.total_commands,
    83→        "total_errors": session.command_stats.total_errors,
    84→    }
    85→
    86→
    87→def workspace_commands(session: Any) -> list[dict]:
    88→    result = []
    89→    for name in sorted(COMMANDS.keys()):
    90→        cost = COMMAND_COST.get(name, CostLevel.CHEAP)
    91→        result.append({
    92→            "name": name,
    93→            "source": "builtin",
    94→            "cost_level": cost.value,
    95→        })
    96→    for name, ext in session.registry._external.items():
    97→        result.append({
    98→            "name": name,
    99→            "source": "external",
   100→            "cost_level": "unknown",
   101→            "description": ext.description,
   102→            "exec": ext.exec,
   103→        })
   104→    return result
   105→
   106→
   107→def workspace_memory(session: Any) -> dict:
   108→    ws: Workspace = session.ws
   109→    cache_entries = {}
   110→    for path, entry in ws._cache._store.items():
   111→        cache_entries[path] = len(entry.data)
   112→    dirty_paths = [i.virtual_path for i in ws._tracker.dirty()]
   113→    backend_memory: dict[str, dict] = {}
   114→    for mount in ws._registry.mounts():
   115→        if isinstance(mount.backend, MemoryBackend):
   116→            total = sum(len(v) for v in mount.backend._files.values())
   117→            backend_memory[mount.prefix] = {
   118→                "type": "MemoryBackend",
   119→                "file_count": len(mount.backend._files),
   120→                "total_bytes": total,
   121→            }
   122→    return {
   123→        "cache": {
   124→            "used": ws._cache.size,
   125→            "limit": ws._cache.limit,
   126→            "entry_count": len(ws._cache._store),
   127→            "entries": cache_entries,
   128→        },
   129→        "dirty_tracker": {
   130→            "total_inodes": len(ws._tracker._inodes),
   131→            "dirty_paths": dirty_paths,
   132→        },
   133→        "backend_memory": backend_memory,
   134→    }
   135→
   136→
   137→def workspace_transfers(session: Any) -> dict:
   138→    ws: Workspace = session.ws
   139→    return workspace_transfers_from_ws(ws)
   140→
   141→
   142→def workspace_status_from_ws(ws: "Workspace") -> dict:
   143→    backends_health = []
   144→    for mount in ws._registry.mounts():
   145→        backends_health.append({
   146→            "mount": mount.prefix,
   147→            "backend": type(mount.backend).__name__,
   148→        })
   149→    return {
   150→        "cache_used": ws._cache.size,
   151→        "cache_limit": ws._cache.limit,
   152→        "dirty_inodes": _count_dirty(ws),
   153→        "backends": backends_health,
   154→        "last_command": None,
   155→        "total_commands": 0,
   156→        "total_errors": 0,
   157→    }
   158→
   159→
   160→def workspace_transfers_from_ws(ws: "Workspace") -> dict:
   161→    per_backend: dict[str, dict] = {}
   162→    for prefix, stats in ws._transfer_stats.items():
   163→        total_reads = stats.read_ops
   164→        avg_read_ms = (stats.total_read_ms /
   165→                       total_reads if total_reads > 0 else 0)
   166→        total_cache_ops = stats.cache_hits + stats.cache_misses
   167→        hit_rate = (stats.cache_hits /
   168→                    total_cache_ops if total_cache_ops > 0 else 0.0)
   169→        per_backend[prefix] = {
   170→            "bytes_read": stats.bytes_read,
   171→            "bytes_written": stats.bytes_written,
   172→            "read_ops": stats.read_ops,
   173→            "write_ops": stats.write_ops,
   174→            "avg_read_latency_ms": round(avg_read_ms, 1),
   175→            "cache_hit_rate": round(hit_rate, 3),
   176→        }
   177→    return per_backend
   178→

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

import os
import resource
import time
from typing import TYPE_CHECKING, Any

from mirage.backend.local.memory import MemoryBackend
from mirage.commands import COMMAND_COST, COMMANDS
from mirage.types import CostLevel

if TYPE_CHECKING:
    from mirage.workspace import Workspace

_server_start_time: float = 0.0

def _count_dirty(ws: "Workspace") -> int:
    memory_mounts = {
        m.prefix
        for m in ws._registry.mounts() if isinstance(m.backend, MemoryBackend)
    }
    return len([
        i for i in ws._tracker.dirty() if i.backend_mount not in memory_mounts
    ])

def set_server_start_time(t: float) -> None:
    global _server_start_time
    _server_start_time = t

def global_status(sessions: dict[str, Any]) -> dict:
    rss = resource.getrusage(resource.RUSAGE_SELF).ru_maxrss
    if os.uname().sysname == "Darwin":
        rss_bytes = rss
    else:
        rss_bytes = rss * 1024
    total_cache = 0
    for s in sessions.values():
        if s.ws is not None:
            total_cache += s.ws._cache.size
    uptime_s = int(time.monotonic() - _server_start_time)
    return {
        "rss_bytes": rss_bytes,
        "total_sessions": len(sessions),
        "total_cache_bytes": total_cache,
        "uptime_seconds": uptime_s,
    }

def list_sessions(sessions: dict[str, Any]) -> list[dict]:
    results = []
    for s in sessions.values():
        entry: dict[str, Any] = {
            "id": s.id,
            "fuse_mounted": s.fuse_mounted,
            "mode": s.mode,
            "mounts": s.mounts,
        }
        if s.ws is not None:
            entry["cache_used"] = s.ws._cache.size
            entry["cache_limit"] = s.ws._cache.limit
            entry["dirty_count"] = len(s.ws._tracker.dirty())
            entry["total_commands"] = s.command_stats.total_commands
        results.append(entry)
    return results

def workspace_status(session: Any) -> dict:
    ws: Workspace = session.ws
    backends_health = []
    for mount in ws._registry.mounts():
        backends_health.append({
            "mount": mount.prefix,
            "backend": type(mount.backend).__name__,
        })
    return {
        "cache_used": ws._cache.size,
        "cache_limit": ws._cache.limit,
        "dirty_inodes": _count_dirty(ws),
        "backends": backends_health,
        "last_command": session.command_stats.last_command,
        "total_commands": session.command_stats.total_commands,
        "total_errors": session.command_stats.total_errors,
    }

def workspace_commands(session: Any) -> list[dict]:
    result = []
    for name in sorted(COMMANDS.keys()):
        cost = COMMAND_COST.get(name, CostLevel.CHEAP)
        result.append({
            "name": name,
            "source": "builtin",
            "cost_level": cost.value,
        })
    for name, ext in session.registry._external.items():
        result.append({
            "name": name,
            "source": "external",
            "cost_level": "unknown",
            "description": ext.description,
            "exec": ext.exec,
        })
    return result

def workspace_memory(session: Any) -> dict:
    ws: Workspace = session.ws
    cache_entries = {}
    for path, entry in ws._cache._store.items():
        cache_entries[path] = len(entry.data)
    dirty_paths = [i.virtual_path for i in ws._tracker.dirty()]
    backend_memory: dict[str, dict] = {}
    for mount in ws._registry.mounts():
        if isinstance(mount.backend, MemoryBackend):
            total = sum(len(v) for v in mount.backend._files.values())
            backend_memory[mount.prefix] = {
                "type": "MemoryBackend",
                "file_count": len(mount.backend._files),
                "total_bytes": total,
            }
    return {
        "cache": {
            "used": ws._cache.size,
            "limit": ws._cache.limit,
            "entry_count": len(ws._cache._store),
            "entries": cache_entries,
        },
        "dirty_tracker": {
            "total_inodes": len(ws._tracker._inodes),
            "dirty_paths": dirty_paths,
        },
        "backend_memory": backend_memory,
    }

def workspace_transfers(session: Any) -> dict:
    ws: Workspace = session.ws
    return workspace_transfers_from_ws(ws)

def workspace_status_from_ws(ws: "Workspace") -> dict:
    backends_health = []
    for mount in ws._registry.mounts():
        backends_health.append({
            "mount": mount.prefix,
            "backend": type(mount.backend).__name__,
        })
    return {
        "cache_used": ws._cache.size,
        "cache_limit": ws._cache.limit,
        "dirty_inodes": _count_dirty(ws),
        "backends": backends_health,
        "last_command": None,
        "total_commands": 0,
        "total_errors": 0,
    }

def workspace_transfers_from_ws(ws: "Workspace") -> dict:
    per_backend: dict[str, dict] = {}
    for prefix, stats in ws._transfer_stats.items():
        total_reads = stats.read_ops
        avg_read_ms = (stats.total_read_ms /
                       total_reads if total_reads > 0 else 0)
        total_cache_ops = stats.cache_hits + stats.cache_misses
        hit_rate = (stats.cache_hits /
                    total_cache_ops if total_cache_ops > 0 else 0.0)
        per_backend[prefix] = {
            "bytes_read": stats.bytes_read,
            "bytes_written": stats.bytes_written,
            "read_ops": stats.read_ops,
            "write_ops": stats.write_ops,
            "avg_read_latency_ms": round(avg_read_ms, 1),
            "cache_hit_rate": round(hit_rate, 3),
        }
    return per_backend


     1→import time
     2→from collections import OrderedDict
     3→
     4→from mirage.workspace.cache.entry import CacheEntry
     5→
     6→
     7→def _parse_limit(limit: str | int) -> int:
     8→    if isinstance(limit, int):
     9→        return limit
    10→    s = limit.strip().upper()
    11→    for suffix, mult in [("GB", 1 << 30), ("MB", 1 << 20), ("KB", 1 << 10)]:
    12→        if s.endswith(suffix):
    13→            return int(s[:-len(suffix)]) * mult
    14→    return int(s)
    15→
    16→
    17→class LRUCache:
    18→
    19→    def __init__(self, limit: str | int = "512MB") -> None:
    20→        self._limit = _parse_limit(limit)
    21→        self._store: OrderedDict[str, CacheEntry] = OrderedDict()
    22→        self._size = 0
    23→
    24→    def get(self, path: str) -> CacheEntry | None:
    25→        if path not in self._store:
    26→            return None
    27→        self._store.move_to_end(path)
    28→        return self._store[path]
    29→
    30→    def put(self,
    31→            path: str,
    32→            data: bytes,
    33→            etag: str | None = None,
    34→            modified: str | None = None,
    35→            size: int | None = None) -> None:
    36→        if path in self._store:
    37→            self._size -= len(self._store[path].data)
    38→            del self._store[path]
    39→        self._store[path] = CacheEntry(
    40→            data=data,
    41→            cached_at=time.monotonic(),
    42→            etag=etag,
    43→            modified=modified,
    44→            size=size,
    45→        )
    46→        self._size += len(data)
    47→        self._evict()
    48→
    49→    def invalidate(self, path: str) -> None:
    50→        if path in self._store:
    51→            self._size -= len(self._store[path].data)
    52→            del self._store[path]
    53→
    54→    def clear(self) -> None:
    55→        self._store.clear()
    56→        self._size = 0
    57→
    58→    @property
    59→    def size(self) -> int:
    60→        return self._size
    61→
    62→    @property
    63→    def limit(self) -> int:
    64→        return self._limit
    65→
    66→    def _evict(self) -> None:
    67→        while self._size > self._limit and self._store:
    68→            _, evicted = self._store.popitem(last=False)
    69→            self._size -= len(evicted.data)
    70→

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

import time
from collections import OrderedDict

from mirage.workspace.cache.entry import CacheEntry

def _parse_limit(limit: str | int) -> int:
    if isinstance(limit, int):
        return limit
    s = limit.strip().upper()
    for suffix, mult in [("GB", 1 << 30), ("MB", 1 << 20), ("KB", 1 << 10)]:
        if s.endswith(suffix):
            return int(s[:-len(suffix)]) * mult
    return int(s)

class LRUCache:

    def __init__(self, limit: str | int = "512MB") -> None:
        self._limit = _parse_limit(limit)
        self._store: OrderedDict[str, CacheEntry] = OrderedDict()
        self._size = 0

    def get(self, path: str) -> CacheEntry | None:
        if path not in self._store:
            return None
        self._store.move_to_end(path)
        return self._store[path]

    def put(self,
            path: str,
            data: bytes,
            etag: str | None = None,
            modified: str | None = None,
            size: int | None = None) -> None:
        if path in self._store:
            self._size -= len(self._store[path].data)
            del self._store[path]
        self._store[path] = CacheEntry(
            data=data,
            cached_at=time.monotonic(),
            etag=etag,
            modified=modified,
            size=size,
        )
        self._size += len(data)
        self._evict()

    def invalidate(self, path: str) -> None:
        if path in self._store:
            self._size -= len(self._store[path].data)
            del self._store[path]

    def clear(self) -> None:
        self._store.clear()
        self._size = 0

    @property
    def size(self) -> int:
        return self._size

    @property
    def limit(self) -> int:
        return self._limit

    def _evict(self) -> None:
        while self._size > self._limit and self._store:
            _, evicted = self._store.popitem(last=False)
            self._size -= len(evicted.data)


Now I understand the full picture. Let me categorize the `time.monotonic()` usages:

**Should stay as `time.monotonic()`** (measuring elapsed duration):
- `workspace/sync.py`: t0 + duration_ms calculations
- `workspace/workspace.py:125-127`: t0 + duration_ms for cat() timing
- `server/service/local.py:172-215`: t0 + duration_ms for exec() timing
- `server/fastapi/daemon.py:21` + `observe/inspector.py:41`: server start time for uptime calculation (these form a pair - `uptime_s = time.monotonic() - _server_start_time`)

- **Should change to UTC** (wall-clock "when" timestamps):
- `workspace/cache/store.py:41`: switching from monotonic to UTC for the cached_at timestamp, which also requires updating consistency.py:28
- `workspace/workspace.py:65`: the creation timestamp should use wall-clock time instead of monotonic
- `server/service/session.py:30`: the session created_at field needs to track actual time, not monotonic

But I'm second-guessing the daemon.py and inspector.py pair—let me reconsider whether those should actually be wall-clock times instead.

Actually, those are computing uptime_s, which measures elapsed time since server start, so monotonic is the right choice there. The actual changes needed are straightforward: swap time.monotonic() to time.time() in those four locations and clean up the imports accordingly. Using time.time() directly is simpler than constructing a UTC datetime object and converting it to a timestamp anyway.

Now I need to verify whether _created_at is actually being used anywhere in the codebase, since it's set in workspace.py but I haven't seen it referenced in the methods I've reviewed so far.

Let me map out the dependency structure after all these refactoring changes - I've moved ConsistencyPolicy to its own module, split the cache logic into separate files for the entry and store, and organized the mount-related code. The workspace module now depends on consistency.py, and the session service depends on the workspace module.

Now I need to address the timestamp changes across these files. The key issue is that `cached_at` uses `time.monotonic()` in the consistency check, so if I switch to `time.time()` for the timestamp fields, I need to update that comparison logic as well to stay consistent.


The `time.monotonic()` usages split into two categories:
- **Duration pairs** (`t0 = time.monotonic()` + `time.monotonic() - t0` for `duration_ms`) — correct, keep these
- **Timestamp fields** (`created_at`, `cached_at`, `_created_at`) — should be UTC

Changes needed: `cache/store.py`, `consistency.py`, `workspace.py`, `session.py`.


grep -n "_created_at" mirage/workspace/workspace.py mirage/observe/ -r --include="*.py"

Check if _created_at is used


mirage/workspace/workspace.py:65:        self._created_at: float = time.monotonic()


`_created_at` is set but never read outside of its declaration. Still, let's change it to UTC for consistency.

Now let me make all the changes:

1. `cache/store.py:41`: `time.monotonic()` → `time.time()`
2. `consistency.py:28`: `time.monotonic()` → `time.time()`
3. `workspace.py:65`: `time.monotonic()` → `time.time()`
4. `session.py:30`: `default_factory=time.monotonic` → `default_factory=time.time`

For `cache/store.py` and `workspace.py`, the `time` import stays (it's used for duration pairs in workspace.py and as `time.time()` in store.py).

Both `consistency.py` and `session.py` already have the `time` import, so I can proceed with all four replacements.


`_created_at` is only set, never read — but change it for consistency. Making all 4 changes:


The file /Users/agent/strukto/mirage/mirage/workspace/cache/store.py has been updated successfully.

import time
from collections import OrderedDict

from mirage.workspace.cache.entry import CacheEntry

def _parse_limit(limit: str | int) -> int:
    if isinstance(limit, int):
        return limit
    s = limit.strip().upper()
    for suffix, mult in [("GB", 1 << 30), ("MB", 1 << 20), ("KB", 1 << 10)]:
        if s.endswith(suffix):
            return int(s[:-len(suffix)]) * mult
    return int(s)

class LRUCache:

    def __init__(self, limit: str | int = "512MB") -> None:
        self._limit = _parse_limit(limit)
        self._store: OrderedDict[str, CacheEntry] = OrderedDict()
        self._size = 0

    def get(self, path: str) -> CacheEntry | None:
        if path not in self._store:
            return None
        self._store.move_to_end(path)
        return self._store[path]

    def put(self,
            path: str,
            data: bytes,
            etag: str | None = None,
            modified: str | None = None,
            size: int | None = None) -> None:
        if path in self._store:
            self._size -= len(self._store[path].data)
            del self._store[path]
        self._store[path] = CacheEntry(
            data=data,
            cached_at=time.monotonic(),
            etag=etag,
            modified=modified,
            size=size,
        )
        self._size += len(data)
        self._evict()

    def invalidate(self, path: str) -> None:
        if path in self._store:
            self._size -= len(self._store[path].data)
            del self._store[path]

    def clear(self) -> None:
        self._store.clear()
        self._size = 0

    @property
    def size(self) -> int:
        return self._size

    @property
    def limit(self) -> int:
        return self._limit

    def _evict(self) -> None:
        while self._size > self._limit and self._store:
            _, evicted = self._store.popitem(last=False)
            self._size -= len(evicted.data)

-            cached_at=time.monotonic(),


     1→import time
     2→from enum import Enum
     3→
     4→from mirage.backend.base import BaseBackend
     5→from mirage.types import FileStat
     6→from mirage.workspace.cache.entry import CacheEntry
     7→
     8→
     9→class ConsistencyPolicy(str, Enum):
    10→    CACHED = "cached"
    11→    LAZY = "lazy"
    12→    TTL = "ttl"
    13→    ALWAYS = "always"
    14→
    15→
    16→def is_fresh(
    17→    entry: CacheEntry,
    18→    consistency: ConsistencyPolicy,
    19→    ttl_seconds: int,
    20→    backend: BaseBackend,
    21→    backend_path: str,
    22→) -> tuple[bool, FileStat | None]:
    23→    if consistency == ConsistencyPolicy.CACHED:
    24→        return True, None
    25→    if consistency == ConsistencyPolicy.ALWAYS:
    26→        return False, None
    27→    if consistency == ConsistencyPolicy.TTL:
    28→        if (time.monotonic() - entry.cached_at) < ttl_seconds:
    29→            return True, None
    30→    try:
    31→        remote = backend.stat(backend_path)
    32→    except FileNotFoundError:
    33→        return False, None
    34→    return metadata_matches(entry, remote), remote
    35→
    36→
    37→def metadata_matches(entry: CacheEntry, remote: FileStat) -> bool:
    38→    remote_etag = remote.extra.get("etag")
    39→    if entry.etag and remote_etag:
    40→        return entry.etag == remote_etag
    41→    if entry.modified and remote.modified:
    42→        return entry.modified == remote.modified
    43→    if entry.size is not None and remote.size is not None:
    44→        return entry.size == remote.size
    45→    return False
    46→

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

import time
from enum import Enum

from mirage.backend.base import BaseBackend
from mirage.types import FileStat
from mirage.workspace.cache.entry import CacheEntry

class ConsistencyPolicy(str, Enum):
    CACHED = "cached"
    LAZY = "lazy"
    TTL = "ttl"
    ALWAYS = "always"

def is_fresh(
    entry: CacheEntry,
    consistency: ConsistencyPolicy,
    ttl_seconds: int,
    backend: BaseBackend,
    backend_path: str,
) -> tuple[bool, FileStat | None]:
    if consistency == ConsistencyPolicy.CACHED:
        return True, None
    if consistency == ConsistencyPolicy.ALWAYS:
        return False, None
    if consistency == ConsistencyPolicy.TTL:
        if (time.monotonic() - entry.cached_at) < ttl_seconds:
            return True, None
    try:
        remote = backend.stat(backend_path)
    except FileNotFoundError:
        return False, None
    return metadata_matches(entry, remote), remote

def metadata_matches(entry: CacheEntry, remote: FileStat) -> bool:
    remote_etag = remote.extra.get("etag")
    if entry.etag and remote_etag:
        return entry.etag == remote_etag
    if entry.modified and remote.modified:
        return entry.modified == remote.modified
    if entry.size is not None and remote.size is not None:
        return entry.size == remote.size
    return False


Edit

if (time.monotonic() - entry.cached_at) < ttl_seconds:

if (time.time() - entry.cached_at) < ttl_seconds:


The file /Users/agent/strukto/mirage/mirage/workspace/consistency.py has been updated successfully.

import time
from enum import Enum

from mirage.backend.base import BaseBackend
from mirage.types import FileStat
from mirage.workspace.cache.entry import CacheEntry

class ConsistencyPolicy(str, Enum):
    CACHED = "cached"
    LAZY = "lazy"
    TTL = "ttl"
    ALWAYS = "always"

def is_fresh(
    entry: CacheEntry,
    consistency: ConsistencyPolicy,
    ttl_seconds: int,
    backend: BaseBackend,
    backend_path: str,
) -> tuple[bool, FileStat | None]:
    if consistency == ConsistencyPolicy.CACHED:
        return True, None
    if consistency == ConsistencyPolicy.ALWAYS:
        return False, None
    if consistency == ConsistencyPolicy.TTL:
        if (time.monotonic() - entry.cached_at) < ttl_seconds:
            return True, None
    try:
        remote = backend.stat(backend_path)
    except FileNotFoundError:
        return False, None
    return metadata_matches(entry, remote), remote

def metadata_matches(entry: CacheEntry, remote: FileStat) -> bool:
    remote_etag = remote.extra.get("etag")
    if entry.etag and remote_etag:
        return entry.etag == remote_etag
    if entry.modified and remote.modified:
        return entry.modified == remote.modified
    if entry.size is not None and remote.size is not None:
        return entry.size == remote.size
    return False

-        if (time.monotonic() - entry.cached_at) < ttl_seconds:

+        if (time.time() - entry.cached_at) < ttl_seconds:


self._created_at: float = time.monotonic()


<tool_use_error>File has not been read yet. Read it first before writing to it.</tool_use_error>

Error: File has not been read yet. Read it first before writing to it.


    60→        self._tracker = DirtyTracker()
    61→        self._sync_policy = sync_policy
    62→        self._ttl_seconds = ttl_seconds
    63→        self._locked_paths: set[str] = set()
    64→        self._transfer_stats: dict[str, TransferStats] = {}
    65→        self._created_at: float = time.monotonic()
    66→
    67→        for prefix, value in backends.items():
    68→            if isinstance(value, tuple) and len(value) == 3:
    69→                backend, mount_mode, mount_consistency = value

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer questions about the code behavior.
</system-reminder>

        self._tracker = DirtyTracker()
        self._sync_policy = sync_policy
        self._ttl_seconds = ttl_seconds
        self._locked_paths: set[str] = set()
        self._transfer_stats: dict[str, TransferStats] = {}
        self._created_at: float = time.monotonic()

        for prefix, value in backends.items():
            if isinstance(value, tuple) and len(value) == 3:
                backend, mount_mode, mount_consistency = value


self._created_at: float = time.monotonic()


The file /Users/agent/strukto/mirage/mirage/workspace/workspace.py has been updated successfully.

from __future__ import annotations

import time

from mirage.backend.base import BaseBackend
from mirage.backend.filetype import guess_type
from mirage.types import (FileStat, Inode, MountMode, SyncPolicy, SyncResult,
                          TransferStats)
from mirage.workspace.cache import LRUCache
from mirage.workspace.consistency import ConsistencyPolicy, is_fresh
from mirage.workspace.mount import MountRegistry
from mirage.workspace.sync import DirtyTracker

class _PathLock:

    def __init__(self, ws: Workspace, paths: list[str]) -> None:
        self._ws = ws
        self._paths = paths

    def __enter__(self) -> _PathLock:
        return self

    def __exit__(self, *_: object) -> None:
        self._ws.unlock_paths(self._paths)

class Workspace:
    """
    Unified virtual filesystem over heterogeneous backends.

    Mounts backends at virtual path prefixes and provides a command-level API
    (cat, ls, write, cp, mv, rm, ...) with transparent caching
    and write staging.

    Example::

        ws = Workspace(
            {"/data/": S3Backend(S3Config(bucket="my-bucket")),
             "/tmp/":  MemoryBackend()},
            cache_limit="256MB",
            sync_policy=SyncPolicy.STAGED,
        )
        content = ws.cat("/data/reports/q1.json")
        ws.write("/tmp/summary.txt", b"hello")
        ws.sync()
    """

    def __init__(
        self,
        backends: dict[str, BaseBackend | tuple],
        cache_limit: str | int = "512MB",
        sync_policy: SyncPolicy = SyncPolicy.STAGED,
        mode: MountMode = MountMode.READ,
        consistency: ConsistencyPolicy = ConsistencyPolicy.CACHED,
        ttl_seconds: int = 300,
    ) -> None:
        self._registry = MountRegistry()
        self._cache = LRUCache(cache_limit)
        self._tracker = DirtyTracker()
        self._sync_policy = sync_policy
        self._ttl_seconds = ttl_seconds
        self._locked_paths: set[str] = set()
        self._transfer_stats: dict[str, TransferStats] = {}
        self._created_at: float = time.monotonic()

        for prefix, value in backends.items():
            if isinstance(value, tuple) and len(value) == 3:
                backend, mount_mode, mount_consistency = value
            elif isinstance(value, tuple):
                backend, mount_mode = value
                mount_consistency = consistency
            else:
                backend = value
                mount_mode = mode
                mount_consistency = consistency
            self._registry.mount(prefix, backend, mount_mode,
                                 mount_consistency)

    # ── mount management ────────────────────────────────────────────────────

    def mount(
            self,
            prefix: str,
            backend: BaseBackend,
            mode: MountMode = MountMode.READ,
            consistency: ConsistencyPolicy = ConsistencyPolicy.CACHED) -> None:
        self._registry.mount(prefix, backend, mode, consistency)

    def backend(self, path: str) -> BaseBackend:
        backend, _, _ = self._registry.resolve(path)
        return backend

    # ── read ops ────────────────────────────────────────────────────────────

    def cat(self, path: str) -> bytes:
        inode = self._tracker.get(path)
        if inode and inode.dirty:
            entry = self._cache.get(path)
            if entry is not None:
                self._record_transfer(path,
                                      "read",
                                      len(entry.data),
                                      0,
                                      cache_hit=True)
                return entry.data

        entry = self._cache.get(path)
        remote_stat = None
        if entry is not None:
            consistency = self._registry.mount_for(path).consistency
            backend, bp, _ = self._registry.resolve(path)
            fresh, remote_stat = is_fresh(entry, consistency,
                                          self._ttl_seconds, backend, bp)
            if fresh:
                self._record_transfer(path,
                                      "read",
                                      len(entry.data),
                                      0,
                                      cache_hit=True)
                return entry.data
        else:
            backend, bp, _ = self._registry.resolve(path)

        t0 = time.monotonic()
        data = backend.cat(bp)
        duration_ms = int((time.monotonic() - t0) * 1000)
        self._record_transfer(path,
                              "read",
                              len(data),
                              duration_ms,
                              cache_hit=False)
        if remote_stat is None:
            remote_stat = backend.stat(bp)
        self._cache.put(path,
                        data,
                        etag=remote_stat.extra.get("etag"),
                        modified=remote_stat.modified,
                        size=remote_stat.size)
        self._tracker.on_read(path, data, self._mount_prefix(path))
        return data

    def ls(self, path: str) -> list[str]:
        backend, bp, _ = self._registry.resolve(path)
        prefix = self._mount_prefix(path).rstrip("/")
        backend_ok = False
        try:
            backend_entries = backend.ls(bp)
            backend_ok = True
        except FileNotFoundError:
            backend_entries = []
        result: set[str] = {
            prefix + "/" + e.lstrip("/")
            for e in backend_entries
        }
        norm_path = "/" + path.strip("/")
        dir_prefix = norm_path.rstrip("/") + "/"
        has_staged_children = False
        for inode in self._tracker.dirty():
            vp = inode.virtual_path
            if not vp.startswith(dir_prefix):
                continue
            if inode.checksum is None:
                result.discard(vp)
                continue
            has_staged_children = True
            remainder = vp[len(dir_prefix):]
            first = remainder.split("/")[0]
            if not first:
                continue
            if "/" in remainder:
                result.add(dir_prefix + first + "/")
            else:
                result.add(dir_prefix + first)
        if not backend_ok and not has_staged_children:
            raise FileNotFoundError(path)
        return sorted(result)

    def ls_l(self, path: str) -> list[FileStat]:
        backend, bp, _ = self._registry.resolve(path)
        return backend.ls_l(bp)

    def stat(self, path: str) -> FileStat:
        inode = self._tracker.get(path)
        if inode and inode.dirty and inode.checksum is not None:
            entry = self._cache.get(path)
            size = len(entry.data) if entry is not None else inode.size
            return FileStat(
                name=path.rstrip("/").rsplit("/", 1)[-1],
                size=size,
                type=guess_type(path),
            )
        backend, bp, _ = self._registry.resolve(path)
        return backend.stat(bp)

    def exists(self, path: str) -> bool:
        try:
            self.stat(path)
            return True
        except (FileNotFoundError, ValueError):
            return False

    def head(self, path: str, lines: int = 10) -> bytes:
        backend, bp, _ = self._registry.resolve(path)
        return backend.head(bp, lines)

    def tail(self, path: str, lines: int = 10) -> bytes:
        backend, bp, _ = self._registry.resolve(path)
        return backend.tail(bp, lines)

    def read(self, path: str, offset: int, size: int) -> bytes:
        inode = self._tracker.get(path)
        if inode and inode.dirty:
            entry = self._cache.get(path)
            if entry is not None:
                return entry.data[offset:offset + size]

        entry = self._cache.get(path)
        remote_stat = None
        if entry is not None:
            consistency = self._registry.mount_for(path).consistency
            backend, bp, _ = self._registry.resolve(path)
            fresh, remote_stat = is_fresh(entry, consistency,
                                          self._ttl_seconds, backend, bp)
            if fresh:
                return entry.data[offset:offset + size]
        else:
            backend, bp, _ = self._registry.resolve(path)

        data = backend.cat(bp)
        if remote_stat is None:
            remote_stat = backend.stat(bp)
        self._cache.put(path,
                        data,
                        etag=remote_stat.extra.get("etag"),
                        modified=remote_stat.modified,
                        size=remote_stat.size)
        self._tracker.on_read(path, data, self._mount_prefix(path))
        return data[offset:offset + size]

    def grep(self, pattern: str, path: str) -> list[str]:
        backend, bp, _ = self._registry.resolve(path)
        return backend.grep(pattern, bp)

    # ── write ops ───────────────────────────────────────────────────────────

    def write(self, path: str, data: bytes) -> None:
        self._assert_not_locked(path)
        self._assert_writable(path)
        backend, bp, _ = self._registry.resolve(path)
        self._cache.put(path, data)
        self._tracker.on_write(path, data, self._mount_prefix(path))
        self._record_transfer(path, "write", len(data), 0)
        if self._sync_policy == SyncPolicy.IMMEDIATE:
            backend.put(bp, data)
            self._tracker.on_read(path, data, self._mount_prefix(path))

    def mkdir(self, path: str) -> None:
        self._assert_writable(path)
        backend, bp, _ = self._registry.resolve(path)
        backend.mkdir(bp)

    def rm(self, path: str) -> None:
        self._assert_writable(path)
        backend, bp, _ = self._registry.resolve(path)
        inode = self._tracker.get(path)
        staged_only = inode and inode.dirty and inode.remote_checksum is None
        if not staged_only:
            backend.unlink(bp)
        self._cache.invalidate(path)
        self._tracker.on_delete(path)

    def mv(self, src: str, dst: str) -> None:
        self._assert_writable(src)
        sb, sbp, _ = self._registry.resolve(src)
        db, dbp, _ = self._registry.resolve(dst)
        src_inode = self._tracker.get(src)
        staged_only = (src_inode and src_inode.dirty
                       and src_inode.remote_checksum is None)
        if staged_only:
            entry = self._cache.get(src)
            data = entry.data if entry else b""
            self._cache.put(dst, data)
            self._tracker.on_write(dst, data, self._mount_prefix(dst))
            self._cache.invalidate(src)
            self._tracker.on_delete(src)
        elif sb is db:
            sb.rename(sbp, dbp)
            self._cache.invalidate(src)
        else:
            data = sb.cat(sbp)
            db.put(dbp, data)
            sb.unlink(sbp)
            self._cache.invalidate(src)

    def cp(self, src: str, dst: str) -> None:
        self._assert_writable(dst)
        data = self.cat(src)
        db, dbp, _ = self._registry.resolve(dst)
        db.put(dbp, data)

    # ── sync lifecycle ──────────────────────────────────────────────────────

    def sync(self, path: str | None = None) -> list[SyncResult]:
        results: list[SyncResult] = []
        targets = [
            i for i in self._tracker.dirty()
            if path is None or i.virtual_path == path
        ]
        for inode in targets:
            backend, bp, _ = self._registry.resolve(inode.virtual_path)
            entry = self._cache.get(inode.virtual_path)
            data = entry.data if entry else None
            result = self._tracker.on_sync(inode.virtual_path, bp, data,
                                           backend)
            results.append(result)
        return results

    def status(self) -> list[Inode]:
        return self._tracker.status()

    def reset(self) -> None:
        self._tracker.reset()
        self._cache.clear()

    # ── path locking ─────────────────────────────────────────────────────────

    def _lock_path(self, path: str) -> None:
        self._locked_paths.add(path)

    def unlock_paths(self, paths: list[str]) -> None:
        for p in paths:
            self._locked_paths.discard(p)

    def lock_paths(self, paths: list[str]) -> _PathLock:
        for p in paths:
            self._lock_path(p)
        return _PathLock(self, paths)

    def _assert_not_locked(self, path: str) -> None:
        if path in self._locked_paths:
            raise PermissionError(
                f"path {path!r} is locked by remote execution")

    # ── helpers ─────────────────────────────────────────────────────────────

    def _mount_prefix(self, path: str) -> str:
        norm = "/" + path.strip("/")
        for m in self._registry.mounts():
            if norm == m.prefix.rstrip("/") or norm.startswith(m.prefix):
                return m.prefix
        return "/"

    def _assert_writable(self, path: str) -> None:
        _, _, mode = self._registry.resolve(path)
        if mode == MountMode.READ:
            raise PermissionError(f"mount at {path!r} is read-only")

    def _record_transfer(self,
                         path: str,
                         op: str,
                         nbytes: int,
                         duration_ms: int,
                         cache_hit: bool | None = None) -> None:
        prefix = self._mount_prefix(path)
        if prefix not in self._transfer_stats:
            self._transfer_stats[prefix] = TransferStats()
        stats = self._transfer_stats[prefix]
        if op == "read":
            stats.bytes_read += nbytes
            stats.read_ops += 1
            stats.total_read_ms += duration_ms
            if cache_hit is True:
                stats.cache_hits += 1
            elif cache_hit is False:
                stats.cache_misses += 1
        elif op == "write":
            stats.bytes_written += nbytes
            stats.write_ops += 1
            stats.total_write_ms += duration_ms

-        self._created_at: float = time.monotonic()

+        self._created_at: float = time.time()


created_at: float = Field(default_factory=time.monotonic)

created_at: float = Field(default_factory=time.time)


The file /Users/agent/strukto/mirage/mirage/server/service/session.py has been updated successfully.

import os
import signal
import subprocess
import sys
import time

from pydantic import BaseModel, ConfigDict, Field

from mirage.commands.custom.registry import CommandRegistry
from mirage.fuse.registry import FuseOpRegistry
from mirage.types import CommandStats, MountMode, RuntimeType
from mirage.workspace import Workspace

class WorkspaceSession(BaseModel):
    model_config = ConfigDict(arbitrary_types_allowed=True)

    id: str
    ws: Workspace | None
    registry: CommandRegistry | None
    cwd: str = "/"
    fuse_mounted: bool = False
    mode: MountMode = MountMode.WRITE
    mountpoint: str | None = None
    pid: int | None = None
    mounts: list[dict] = Field(default_factory=list)
    runtime_type: RuntimeType | None = None
    fuse_registry: FuseOpRegistry = Field(default_factory=FuseOpRegistry)
    command_stats: CommandStats = Field(default_factory=CommandStats)
    created_at: float = Field(default_factory=time.monotonic)
    reported_status: dict | None = None
    reported_transfers: dict | None = None

def _unmount_fuse(mountpoint: str, pid: int | None) -> None:
    if sys.platform == "darwin":
        subprocess.run(["diskutil", "unmount", "force", mountpoint],
                       capture_output=True)
    else:
        subprocess.run(["fusermount", "-u", mountpoint], capture_output=True)
    if pid:
        try:
            os.kill(pid, signal.SIGTERM)
        except ProcessLookupError:
            pass

-    created_at: float = Field(default_factory=time.monotonic)

+    created_at: float = Field(default_factory=time.time)


Bash

uv run pytest --no-cov -q 2>&1 | tail -3

Verify all tests still pass


........................................................................ [ 87%]
........................................................................ [ 98%]
.........                                                                [100%]


Get final count


656 passed, 1 skipped in 2.18s


Good. Now for the dependency map:


Agent

Map current module dependencies

Prompt:
Map the top-level import dependencies between modules in /Users/agent/strukto/mirage/mirage/. Read the first ~30 lines (imports section) of these key files and report what each imports from other mirage modules:

- mirage/types.py
- mirage/workspace/consistency.py
- mirage/workspace/cache/entry.py
- mirage/workspace/cache/store.py
- mirage/workspace/mount.py
- mirage/workspace/workspace.py
- mirage/workspace/__init__.py
- mirage/workspace/sync.py
- mirage/server/service/session.py
- mirage/server/service/base.py
- mirage/server/service/local.py
- mirage/server/fastapi/app.py
- mirage/server/fastapi/config.py
- mirage/observe/inspector.py
- mirage/runtime/base.py
- mirage/commands/__init__.py
- mirage/fuse/__init__.py

For each file, list only the `from mirage.X import ...` lines. Output as a simple list: "FILE → [dep1, dep2, ...]"


Perfect! I now have all the information needed. Let me compile the dependency map:

## Top-Level Import Dependencies Between Mirage Modules

Here's the mapping of internal mirage imports for each file:

1. **mirage/types.py** → (no internal mirage imports)

2. **mirage/workspace/consistency.py** → [mirage.backend.base, mirage.types, mirage.workspace.cache.entry]

3. **mirage/workspace/cache/entry.py** → (no internal mirage imports)

4. **mirage/workspace/cache/store.py** → [mirage.workspace.cache.entry]

5. **mirage/workspace/mount.py** → [mirage.backend.base, mirage.types, mirage.workspace.consistency]

6. **mirage/workspace/workspace.py** → [mirage.backend.base, mirage.backend.filetype, mirage.types, mirage.workspace.cache, mirage.workspace.consistency, mirage.workspace.mount, mirage.workspace.sync]

7. **mirage/workspace/__init__.py** → [mirage.workspace.workspace]

8. **mirage/workspace/sync.py** → [mirage.backend.base, mirage.types]

9. **mirage/server/service/session.py** → [mirage.commands.custom.registry, mirage.fuse.registry, mirage.types, mirage.workspace]

10. **mirage/server/service/base.py** → [mirage.types]

11. **mirage/server/service/local.py** → [mirage.backend.loader, mirage.cli.config, mirage.commands, mirage.commands.builtin, mirage.commands.custom.registry, mirage.fuse, mirage.fuse.loader, mirage.observe.entries, mirage.observe.session_log, mirage.runtime.base, mirage.server.service.base, mirage.server.service.cache, mirage.server.service.session, mirage.types, mirage.workspace, mirage.workspace.consistency]

12. **mirage/server/fastapi/app.py** → [mirage.observe.fastapi.router, mirage.server.fastapi.routers.command_router, mirage.server.fastapi.routers.io_router, mirage.server.fastapi.routers.workspace_router, mirage.server.service.local]

13. **mirage/server/fastapi/config.py** → [mirage.types, mirage.workspace.consistency]

14. **mirage/observe/inspector.py** → [mirage.backend.local.memory, mirage.commands, mirage.types]

15. **mirage/runtime/base.py** → [mirage.commands, mirage.commands.builtin, mirage.commands.custom.registry, mirage.fuse.registry, mirage.runtime.accessors.base, mirage.runtime.accessors.local, mirage.workspace]

16. **mirage/commands/__init__.py** → [mirage.commands.builtin.handlers]

17. **mirage/fuse/__init__.py** → [mirage.fuse.backend.default, mirage.fuse.backend.local.local, mirage.fuse.backend.local.memory, mirage.fuse.backend.object_storage.s3, mirage.fuse.base, mirage.fuse.filetype.csv, mirage.fuse.filetype.parquet]

agentId: a6112ce23a185124a (for resuming to continue this agent's work if needed)
<usage>total_tokens: 21854
tool_uses: 17
duration_ms: 12894</usage>

Prompt:
Map the top-level import dependencies between modules in /Users/agent/strukto/mirage/mirage/. Read the first ~30 lines (imports section) of these key files and report what each imports from other mirage modules:

- mirage/types.py
- mirage/workspace/consistency.py
- mirage/workspace/cache/entry.py
- mirage/workspace/cache/store.py
- mirage/workspace/mount.py
- mirage/workspace/workspace.py
- mirage/workspace/__init__.py
- mirage/workspace/sync.py
- mirage/server/service/session.py
- mirage/server/service/base.py
- mirage/server/service/local.py
- mirage/server/fastapi/app.py
- mirage/server/fastapi/config.py
- mirage/observe/inspector.py
- mirage/runtime/base.py
- mirage/commands/__init__.py
- mirage/fuse/__init__.py

For each file, list only the `from mirage.X import ...` lines. Output as a simple list: "FILE → [dep1, dep2, ...]"


Now I have a clear picture of the current dependencies. Let me summarize them in a clean diagram for the user, focusing on the key modules and their relationships.The key thing to highlight is:
1. `types.py` is a leaf (no internal deps)
2. `workspace/cache/entry.py` is a leaf
3. `workspace/consistency.py` depends on: `backend.base`, `types`, `workspace/cache/entry`
4. The layering: types → cache.entry → consistency → mount → workspace → session → local → fastapi

Let me draw a clean ASCII dependency diagram showing the flow from leaf modules to high-level modules.