feat(runtime): Add prototype Runloop runtime impl (#4598)

Co-authored-by: Robert Brennan <[email protected]>

openhands/core/config/app_config.py

@@ -69,6 +69,7 @@ class AppConfig:
     file_uploads_max_file_size_mb: int = 0
     file_uploads_restrict_file_types: bool = False
     file_uploads_allowed_extensions: list[str] = field(default_factory=lambda: ['.*'])
+    runloop_api_key: str | None = None
 
     defaults_dict: ClassVar[dict] = {}
 
@@ -139,6 +140,7 @@ def __str__(self):
                 'jwt_secret',
                 'modal_api_token_id',
                 'modal_api_token_secret',
+                'runloop_api_key',
             ]:
                 attr_value = '******' if attr_value else None
 

openhands/runtime/__init__.py

@@ -23,6 +23,10 @@ def get_runtime_cls(name: str):
         from openhands.runtime.impl.modal.modal_runtime import ModalRuntime
 
         return ModalRuntime
+    elif name == 'runloop':
+        from openhands.runtime.impl.runloop.runloop_runtime import RunloopRuntime
+
+        return RunloopRuntime
     else:
         raise ValueError(f'Runtime {name} not supported')
 

openhands/runtime/impl/runloop/README.md

@@ -0,0 +1,31 @@
+# Runloop Runtime
+Runloop provides a fast, secure and scalable AI sandbox (Devbox).
+ Check out the [runloop docs](https://docs.runloop.ai/overview/what-is-runloop)
+for more detail
+
+## Access
+Runloop is currently available in a closed beta. For early access, or
+just to say hello, sign up at https://www.runloop.ai/hello
+
+## Set up
+With your runloop API,
+```bash
+export RUNLOOP_API_KEY=<your-api-key>
+```
+
+Configure the runtime
+```bash
+export RUNTIME="runloop"
+```
+
+## Interact with your devbox
+Runloop provides additional tools to interact with your Devbox based
+runtime environment. See the [docs](https://docs.runloop.ai/tools) for an up
+to date list of tools.
+
+### Dashboard
+View logs, ssh into, or view your Devbox status from the [dashboard](https://platform.runloop.ai)
+
+### CLI
+Use the Runloop CLI to view logs, execute commands, and more.
+See the setup instructions [here](https://docs.runloop.ai/tools/cli)

openhands/runtime/impl/runloop/runloop_runtime.py

@@ -0,0 +1,272 @@
+import logging
+import threading
+import time
+from typing import Callable
+
+import requests
+import tenacity
+from runloop_api_client import Runloop
+from runloop_api_client.types import DevboxView
+from runloop_api_client.types.shared_params import LaunchParameters
+
+from openhands.core.config import AppConfig
+from openhands.core.logger import openhands_logger as logger
+from openhands.events import EventStream
+from openhands.runtime.impl.eventstream.eventstream_runtime import (
+    EventStreamRuntime,
+    LogBuffer,
+)
+from openhands.runtime.plugins import PluginRequirement
+from openhands.runtime.utils.command import get_remote_startup_command
+from openhands.runtime.utils.request import send_request
+from openhands.utils.tenacity_stop import stop_if_should_exit
+
+
+class RunloopLogBuffer(LogBuffer):
+    """Synchronous buffer for Runloop devbox logs.
+
+    This class provides a thread-safe way to collect, store, and retrieve logs
+    from a Docker container. It uses a list to store log lines and provides methods
+    for appending, retrieving, and clearing logs.
+    """
+
+    def __init__(self, runloop_api_client: Runloop, devbox_id: str):
+        self.client_ready = False
+        self.init_msg = 'Runtime client initialized.'
+
+        self.buffer: list[str] = []
+        self.lock = threading.Lock()
+        self._stop_event = threading.Event()
+        self.runloop_api_client = runloop_api_client
+        self.devbox_id = devbox_id
+        self.log_index = 0
+        self.log_stream_thread = threading.Thread(target=self.stream_logs)
+        self.log_stream_thread.daemon = True
+        self.log_stream_thread.start()
+
+    def stream_logs(self):
+        """Stream logs from the Docker container in a separate thread.
+
+        This method runs in its own thread to handle the blocking
+        operation of reading log lines from the Docker SDK's synchronous generator.
+        """
+
+        try:
+            # TODO(Runloop) Replace with stream
+            while True:
+                raw_logs = self.runloop_api_client.devboxes.logs.list(
+                    self.devbox_id
+                ).logs[self.log_index :]
+                logs = [
+                    log.message
+                    for log in raw_logs
+                    if log.message and log.cmd_id is None
+                ]
+
+                self.log_index += len(raw_logs)
+                if self._stop_event.is_set():
+                    break
+                if logs:
+                    for log_line in logs:
+                        self.append(log_line)
+                        if self.init_msg in log_line:
+                            self.client_ready = True
+
+                time.sleep(1)
+        except Exception as e:
+            logger.error(f'Error streaming runloop logs: {e}')
+
+    # NB: Match LogBuffer behavior on below methods
+
+    def get_and_clear(self) -> list[str]:
+        with self.lock:
+            logs = list(self.buffer)
+            self.buffer.clear()
+            return logs
+
+    def append(self, log_line: str):
+        with self.lock:
+            self.buffer.append(log_line)
+
+    def close(self, timeout: float = 5.0):
+        self._stop_event.set()
+        self.log_stream_thread.join(timeout)
+
+
+class RunloopRuntime(EventStreamRuntime):
+    """The RunloopRuntime class is an EventStreamRuntime that utilizes Runloop Devbox as a runtime environment."""
+
+    _sandbox_port: int = 4444
+
+    def __init__(
+        self,
+        config: AppConfig,
+        event_stream: EventStream,
+        sid: str = 'default',
+        plugins: list[PluginRequirement] | None = None,
+        env_vars: dict[str, str] | None = None,
+        status_callback: Callable | None = None,
+        attach_to_existing: bool = False,
+    ):
+        assert config.runloop_api_key is not None, 'Runloop API key is required'
+        self.devbox: DevboxView | None = None
+        self.config = config
+        self.runloop_api_client = Runloop(
+            bearer_token=config.runloop_api_key,
+        )
+        self.session = requests.Session()
+        self.container_name = self.container_name_prefix + sid
+        self.action_semaphore = threading.Semaphore(1)  # Ensure one action at a time
+        self.init_base_runtime(
+            config,
+            event_stream,
+            sid,
+            plugins,
+            env_vars,
+            status_callback,
+            attach_to_existing,
+        )
+        # Buffer for container logs
+        self.log_buffer: LogBuffer | None = None
+
+    @tenacity.retry(
+        stop=tenacity.stop_after_attempt(120),
+        wait=tenacity.wait_fixed(1),
+    )
+    def _wait_for_devbox(self, devbox: DevboxView) -> DevboxView:
+        """Pull devbox status until it is running"""
+        if devbox == 'running':
+            return devbox
+
+        devbox = self.runloop_api_client.devboxes.retrieve(id=devbox.id)
+        if devbox.status != 'running':
+            raise ConnectionRefusedError('Devbox is not running')
+
+        # Devbox is connected and running
+        logging.debug(f'devbox.id={devbox.id} is running')
+        return devbox
+
+    def _create_new_devbox(self) -> DevboxView:
+        # Note: Runloop connect
+        sandbox_workspace_dir = self.config.workspace_mount_path_in_sandbox
+        plugin_args = []
+        if self.plugins is not None and len(self.plugins) > 0:
+            plugin_args.append('--plugins')
+            plugin_args.extend([plugin.name for plugin in self.plugins])
+
+        browsergym_args = []
+        if self.config.sandbox.browsergym_eval_env is not None:
+            browsergym_args = [
+                '-browsergym-eval-env',
+                self.config.sandbox.browsergym_eval_env,
+            ]
+
+        # Copied from EventstreamRuntime
+        start_command = get_remote_startup_command(
+            self._sandbox_port,
+            sandbox_workspace_dir,
+            'openhands' if self.config.run_as_openhands else 'root',
+            self.config.sandbox.user_id,
+            plugin_args,
+            browsergym_args,
+        )
+
+        # Add some additional commands based on our image
+        # NB: start off as root, action_execution_server will ultimately choose user but expects all context
+        # (ie browser) to be installed as root
+        start_command = (
+            'export MAMBA_ROOT_PREFIX=/openhands/micromamba && '
+            'cd /openhands/code && '
+            + '/openhands/micromamba/bin/micromamba run -n openhands poetry config virtualenvs.path /openhands/poetry && '
+            + ' '.join(start_command)
+        )
+        entrypoint = f"sudo bash -c '{start_command}'"
+
+        devbox = self.runloop_api_client.devboxes.create(
+            entrypoint=entrypoint,
+            setup_commands=[f'mkdir -p {self.config.workspace_mount_path_in_sandbox}'],
+            name=self.sid,
+            environment_variables={'DEBUG': 'true'} if self.config.debug else {},
+            prebuilt='openhands',
+            launch_parameters=LaunchParameters(
+                available_ports=[self._sandbox_port],
+                resource_size_request="LARGE",
+            ),
+            metadata={'container-name': self.container_name},
+        )
+        return self._wait_for_devbox(devbox)
+
+    async def connect(self):
+        self.send_status_message('STATUS$STARTING_RUNTIME')
+
+        if self.attach_to_existing:
+            active_devboxes = self.runloop_api_client.devboxes.list(
+                status='running'
+            ).devboxes
+            self.devbox = next(
+                (devbox for devbox in active_devboxes if devbox.name == self.sid), None
+            )
+
+        if self.devbox is None:
+            self.devbox = self._create_new_devbox()
+
+        # Create tunnel - this will return a stable url, so is safe to call if we are attaching to existing
+        tunnel = self.runloop_api_client.devboxes.create_tunnel(
+            id=self.devbox.id,
+            port=self._sandbox_port,
+        )
+
+        # Hook up logs
+        self.log_buffer = RunloopLogBuffer(self.runloop_api_client, self.devbox.id)
+        self.api_url = f'https://{tunnel.url}'
+        logger.info(f'Container started. Server url: {self.api_url}')
+
+        # End Runloop connect
+        # NOTE: Copied from EventStreamRuntime
+        logger.info('Waiting for client to become ready...')
+        self.send_status_message('STATUS$WAITING_FOR_CLIENT')
+        self._wait_until_alive()
+
+        if not self.attach_to_existing:
+            self.setup_initial_env()
+
+        logger.info(
+            f'Container initialized with plugins: {[plugin.name for plugin in self.plugins]}'
+        )
+        self.send_status_message(' ')
+
+    @tenacity.retry(
+        stop=tenacity.stop_after_delay(120) | stop_if_should_exit(),
+        wait=tenacity.wait_fixed(1),
+        reraise=(ConnectionRefusedError,),
+    )
+    def _wait_until_alive(self):
+        # NB(Runloop): Remote logs are not guaranteed realtime, removing client_ready check from logs
+        self._refresh_logs()
+        if not self.log_buffer:
+            raise RuntimeError('Runtime client is not ready.')
+        response = send_request(
+            self.session,
+            'GET',
+            f'{self.api_url}/alive',
+            timeout=5,
+        )
+        if response.status_code == 200:
+            return
+        else:
+            msg = f'Action execution API is not alive. Response: {response}'
+            logger.error(msg)
+            raise RuntimeError(msg)
+
+    def close(self, rm_all_containers: bool = True):
+        if self.log_buffer:
+            self.log_buffer.close()
+
+        if self.session:
+            self.session.close()
+
+        if self.attach_to_existing:
+            return
+
+        if self.devbox:
+            self.runloop_api_client.devboxes.shutdown(self.devbox.id)