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from typing import Callable, Optional
from openhands.core.config import AppConfig
from openhands.events.action import (
FileReadAction,
FileWriteAction,
)
from openhands.events.observation import (
ErrorObservation,
FileReadObservation,
FileWriteObservation,
Observation,
)
from openhands.events.stream import EventStream
from openhands.runtime.base import Runtime
from openhands.runtime.impl.e2b.filestore import E2BFileStore
from openhands.runtime.impl.e2b.sandbox import E2BSandbox
from openhands.runtime.plugins import PluginRequirement
from openhands.runtime.utils.files import insert_lines, read_lines
class E2BRuntime(Runtime):
def __init__(
self,
config: AppConfig,
event_stream: EventStream,
sid: str = 'default',
plugins: list[PluginRequirement] | None = None,
sandbox: E2BSandbox | None = None,
status_callback: Optional[Callable] = None,
):
super().__init__(
config,
event_stream,
sid,
plugins,
status_callback=status_callback,
)
if sandbox is None:
self.sandbox = E2BSandbox()
if not isinstance(self.sandbox, E2BSandbox):
raise ValueError('E2BRuntime requires an E2BSandbox')
self.file_store = E2BFileStore(self.sandbox.filesystem)
def read(self, action: FileReadAction) -> Observation:
content = self.file_store.read(action.path)
lines = read_lines(content.split('\n'), action.start, action.end)
code_view = ''.join(lines)
return FileReadObservation(code_view, path=action.path)
def write(self, action: FileWriteAction) -> Observation:
if action.start == 0 and action.end == -1:
self.file_store.write(action.path, action.content)
return FileWriteObservation(content='', path=action.path)
files = self.file_store.list(action.path)
if action.path in files:
all_lines = self.file_store.read(action.path).split('\n')
new_file = insert_lines(
action.content.split('\n'), all_lines, action.start, action.end
)
self.file_store.write(action.path, ''.join(new_file))
return FileWriteObservation('', path=action.path)
else:
# FIXME: we should create a new file here
return ErrorObservation(f'File not found: {action.path}')
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