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