Files
Dorod-Sky/skyvern/forge/agent.py

1868 lines
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import asyncio
import json
import os
import random
import string
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from asyncio.exceptions import CancelledError
from datetime import datetime
from typing import Any, Tuple
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import httpx
import structlog
from playwright._impl._errors import TargetClosedError
from playwright.async_api import Page
from skyvern import analytics
from skyvern.constants import SCRAPE_TYPE_ORDER, SPECIAL_FIELD_VERIFICATION_CODE, ScrapeType
from skyvern.exceptions import (
BrowserStateMissingPage,
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EmptyScrapePage,
FailedToNavigateToUrl,
FailedToSendWebhook,
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FailedToTakeScreenshot,
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InvalidTaskStatusTransition,
InvalidWorkflowTaskURLState,
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MissingBrowserState,
MissingBrowserStatePage,
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SkyvernException,
StepTerminationError,
StepUnableToExecuteError,
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TaskAlreadyCanceled,
TaskNotFound,
)
from skyvern.forge import app
from skyvern.forge.async_operations import AgentPhase, AsyncOperationPool
from skyvern.forge.prompts import prompt_engine
from skyvern.forge.sdk.api.files import get_path_for_workflow_download_directory, list_files_in_directory, rename_file
from skyvern.forge.sdk.artifact.models import ArtifactType
from skyvern.forge.sdk.core import skyvern_context
from skyvern.forge.sdk.core.security import generate_skyvern_signature
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from skyvern.forge.sdk.core.validators import validate_url
from skyvern.forge.sdk.models import Organization, Step, StepStatus
from skyvern.forge.sdk.schemas.tasks import Task, TaskRequest, TaskStatus
from skyvern.forge.sdk.settings_manager import SettingsManager
from skyvern.forge.sdk.workflow.context_manager import WorkflowRunContext
from skyvern.forge.sdk.workflow.models.block import TaskBlock
from skyvern.forge.sdk.workflow.models.workflow import Workflow, WorkflowRun
from skyvern.webeye.actions.actions import (
Action,
ActionType,
CompleteAction,
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DecisiveAction,
UserDefinedError,
WebAction,
parse_actions,
)
from skyvern.webeye.actions.caching import retrieve_action_plan
from skyvern.webeye.actions.handler import ActionHandler, poll_verification_code
from skyvern.webeye.actions.models import AgentStepOutput, DetailedAgentStepOutput
from skyvern.webeye.actions.responses import ActionResult
from skyvern.webeye.browser_factory import BrowserState
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from skyvern.webeye.scraper.scraper import ElementTreeFormat, ScrapedPage, scrape_website
from skyvern.webeye.utils.page import SkyvernFrame
LOG = structlog.get_logger()
class ActionLinkedNode:
def __init__(self, action: Action) -> None:
self.action = action
self.next: ActionLinkedNode | None = None
class ForgeAgent:
def __init__(self) -> None:
if SettingsManager.get_settings().ADDITIONAL_MODULES:
for module in SettingsManager.get_settings().ADDITIONAL_MODULES:
LOG.info("Loading additional module", module=module)
__import__(module)
LOG.info(
"Additional modules loaded",
modules=SettingsManager.get_settings().ADDITIONAL_MODULES,
)
LOG.info(
"Initializing ForgeAgent",
env=SettingsManager.get_settings().ENV,
execute_all_steps=SettingsManager.get_settings().EXECUTE_ALL_STEPS,
browser_type=SettingsManager.get_settings().BROWSER_TYPE,
max_scraping_retries=SettingsManager.get_settings().MAX_SCRAPING_RETRIES,
video_path=SettingsManager.get_settings().VIDEO_PATH,
browser_action_timeout_ms=SettingsManager.get_settings().BROWSER_ACTION_TIMEOUT_MS,
max_steps_per_run=SettingsManager.get_settings().MAX_STEPS_PER_RUN,
long_running_task_warning_ratio=SettingsManager.get_settings().LONG_RUNNING_TASK_WARNING_RATIO,
debug_mode=SettingsManager.get_settings().DEBUG_MODE,
)
self.async_operation_pool = AsyncOperationPool()
async def create_task_and_step_from_block(
self,
task_block: TaskBlock,
workflow: Workflow,
workflow_run: WorkflowRun,
workflow_run_context: WorkflowRunContext,
task_order: int,
task_retry: int,
) -> tuple[Task, Step]:
task_block_parameters = task_block.parameters
navigation_payload = {}
for parameter in task_block_parameters:
navigation_payload[parameter.key] = workflow_run_context.get_value(parameter.key)
task_url = task_block.url
if task_url is None:
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browser_state = app.BROWSER_MANAGER.get_for_workflow_run(workflow_run_id=workflow_run.workflow_run_id)
if browser_state is None:
raise MissingBrowserState(workflow_run_id=workflow_run.workflow_run_id)
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working_page = await browser_state.get_working_page()
if not working_page:
LOG.error(
"BrowserState has no page",
workflow_run_id=workflow_run.workflow_run_id,
)
raise MissingBrowserStatePage(workflow_run_id=workflow_run.workflow_run_id)
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if working_page.url == "about:blank":
raise InvalidWorkflowTaskURLState(workflow_run.workflow_run_id)
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task_url = working_page.url
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task_url = validate_url(task_url)
task = await app.DATABASE.create_task(
url=task_url,
title=task_block.title,
webhook_callback_url=None,
totp_verification_url=task_block.totp_verification_url,
totp_identifier=task_block.totp_identifier,
navigation_goal=task_block.navigation_goal,
data_extraction_goal=task_block.data_extraction_goal,
navigation_payload=navigation_payload,
organization_id=workflow.organization_id,
proxy_location=workflow_run.proxy_location,
extracted_information_schema=task_block.data_schema,
workflow_run_id=workflow_run.workflow_run_id,
order=task_order,
retry=task_retry,
max_steps_per_run=task_block.max_steps_per_run,
error_code_mapping=task_block.error_code_mapping,
)
LOG.info(
"Created new task for workflow run",
workflow_id=workflow.workflow_id,
workflow_run_id=workflow_run.workflow_run_id,
task_id=task.task_id,
url=task.url,
title=task.title,
nav_goal=task.navigation_goal,
data_goal=task.data_extraction_goal,
error_code_mapping=task.error_code_mapping,
proxy_location=task.proxy_location,
task_order=task_order,
task_retry=task_retry,
)
# Update task status to running
task = await app.DATABASE.update_task(
task_id=task.task_id,
organization_id=task.organization_id,
status=TaskStatus.running,
)
step = await app.DATABASE.create_step(
task.task_id,
order=0,
retry_index=0,
organization_id=task.organization_id,
)
LOG.info(
"Created new step for workflow run",
workflow_id=workflow.workflow_id,
workflow_run_id=workflow_run.workflow_run_id,
step_id=step.step_id,
task_id=task.task_id,
order=step.order,
retry_index=step.retry_index,
)
return task, step
async def create_task(self, task_request: TaskRequest, organization_id: str | None = None) -> Task:
webhook_callback_url = str(task_request.webhook_callback_url) if task_request.webhook_callback_url else None
totp_verification_url = str(task_request.totp_verification_url) if task_request.totp_verification_url else None
task = await app.DATABASE.create_task(
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url=str(task_request.url),
title=task_request.title,
webhook_callback_url=webhook_callback_url,
totp_verification_url=totp_verification_url,
totp_identifier=task_request.totp_identifier,
navigation_goal=task_request.navigation_goal,
data_extraction_goal=task_request.data_extraction_goal,
navigation_payload=task_request.navigation_payload,
organization_id=organization_id,
proxy_location=task_request.proxy_location,
extracted_information_schema=task_request.extracted_information_schema,
error_code_mapping=task_request.error_code_mapping,
)
LOG.info(
"Created new task",
task_id=task.task_id,
url=task.url,
proxy_location=task.proxy_location,
organization_id=organization_id,
)
return task
async def register_async_operations(self, organization: Organization, task: Task, page: Page) -> None:
operations = await app.AGENT_FUNCTION.generate_async_operations(organization, task, page)
self.async_operation_pool.add_operations(task.task_id, operations)
async def execute_step(
self,
organization: Organization,
task: Task,
step: Step,
api_key: str | None = None,
workflow_run: WorkflowRun | None = None,
close_browser_on_completion: bool = True,
task_block: TaskBlock | None = None,
) -> Tuple[Step, DetailedAgentStepOutput | None, Step | None]:
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refreshed_task = await app.DATABASE.get_task(task_id=task.task_id, organization_id=organization.organization_id)
if refreshed_task:
task = refreshed_task
if task.status == TaskStatus.canceled:
LOG.info(
"Task is canceled, stopping execution",
task_id=task.task_id,
)
step = await self.update_step(
step,
status=StepStatus.canceled,
is_last=True,
)
# We don't send task response for now as the task is canceled
# TODO: shall we send task response here?
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await self.clean_up_task(
task=task,
last_step=step,
api_key=api_key,
need_call_webhook=False,
)
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return step, None, None
context = skyvern_context.current()
override_max_steps_per_run = context.max_steps_override if context else None
max_steps_per_run = (
override_max_steps_per_run
or task.max_steps_per_run
or organization.max_steps_per_run
or SettingsManager.get_settings().MAX_STEPS_PER_RUN
)
if max_steps_per_run and task.max_steps_per_run != max_steps_per_run:
await app.DATABASE.update_task(
task_id=task.task_id,
organization_id=organization.organization_id,
max_steps_per_run=max_steps_per_run,
)
next_step: Step | None = None
detailed_output: DetailedAgentStepOutput | None = None
list_files_before: list[str] = []
try:
if task.workflow_run_id:
list_files_before = list_files_in_directory(
get_path_for_workflow_download_directory(task.workflow_run_id)
)
# Check some conditions before executing the step, throw an exception if the step can't be executed
await app.AGENT_FUNCTION.validate_step_execution(task, step)
(
step,
browser_state,
detailed_output,
) = await self._initialize_execution_state(task, step, workflow_run)
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if page := await browser_state.get_working_page():
await self.register_async_operations(organization, task, page)
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step, detailed_output = await self.agent_step(
task, step, browser_state, organization=organization, task_block=task_block
)
task = await self.update_task_errors_from_detailed_output(task, detailed_output)
retry = False
if task_block and task_block.complete_on_download and task.workflow_run_id:
workflow_download_directory = get_path_for_workflow_download_directory(task.workflow_run_id)
list_files_after = list_files_in_directory(workflow_download_directory)
if len(list_files_after) > len(list_files_before):
files_to_rename = list(set(list_files_after) - set(list_files_before))
for file in files_to_rename:
random_file_id = "".join(random.choices(string.ascii_uppercase + string.digits, k=4))
random_file_name = f"download-{datetime.now().strftime('%Y%m%d%H%M%S%f')}-{random_file_id}"
if task_block.download_suffix:
random_file_name = f"{random_file_name}-{task_block.download_suffix}"
rename_file(os.path.join(workflow_download_directory, file), random_file_name)
LOG.info(
"Task marked as completed due to download",
task_id=task.task_id,
num_files_before=len(list_files_before),
num_files_after=len(list_files_after),
new_files=files_to_rename,
)
last_step = await self.update_step(step, is_last=True)
completed_task = await self.update_task(
task,
status=TaskStatus.completed,
)
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await self.clean_up_task(
task=completed_task,
last_step=last_step,
api_key=api_key,
close_browser_on_completion=close_browser_on_completion,
)
return last_step, detailed_output, None
# If the step failed, mark the step as failed and retry
if step.status == StepStatus.failed:
maybe_next_step = await self.handle_failed_step(organization, task, step)
# If there is no next step, it means that the task has failed
if maybe_next_step:
next_step = maybe_next_step
retry = True
else:
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await self.clean_up_task(
task=task,
last_step=step,
api_key=api_key,
close_browser_on_completion=close_browser_on_completion,
)
return step, detailed_output, None
elif step.status == StepStatus.completed:
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# TODO (kerem): keep the task object uptodate at all times so that clean_up_task can just use it
(
is_task_completed,
maybe_last_step,
maybe_next_step,
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) = await self.handle_completed_step(organization, task, step, await browser_state.get_working_page())
if is_task_completed is not None and maybe_last_step:
last_step = maybe_last_step
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await self.clean_up_task(
task=task,
last_step=last_step,
api_key=api_key,
close_browser_on_completion=close_browser_on_completion,
)
return last_step, detailed_output, None
elif maybe_next_step:
next_step = maybe_next_step
retry = False
else:
LOG.error(
"Step completed but task is not completed and next step is not created.",
task_id=task.task_id,
step_id=step.step_id,
is_task_completed=is_task_completed,
maybe_last_step=maybe_last_step,
maybe_next_step=maybe_next_step,
)
else:
LOG.error(
"Unexpected step status after agent_step",
task_id=task.task_id,
step_id=step.step_id,
step_status=step.status,
)
if retry and next_step:
return await self.execute_step(
organization,
task,
next_step,
api_key=api_key,
close_browser_on_completion=close_browser_on_completion,
task_block=task_block,
)
elif SettingsManager.get_settings().execute_all_steps() and next_step:
return await self.execute_step(
organization,
task,
next_step,
api_key=api_key,
close_browser_on_completion=close_browser_on_completion,
task_block=task_block,
)
else:
LOG.info(
"Step executed but continuous execution is disabled.",
task_id=task.task_id,
step_id=step.step_id,
is_cloud_env=SettingsManager.get_settings().is_cloud_environment(),
execute_all_steps=SettingsManager.get_settings().execute_all_steps(),
next_step_id=next_step.step_id if next_step else None,
)
return step, detailed_output, next_step
# TODO (kerem): Let's add other exceptions that we know about here as custom exceptions as well
except StepUnableToExecuteError:
LOG.error(
"Step cannot be executed. Task execution stopped",
task_id=task.task_id,
step_id=step.step_id,
)
raise
except StepTerminationError as e:
LOG.warning(
"Step cannot be executed, marking task as failed",
task_id=task.task_id,
step_id=step.step_id,
exc_info=True,
)
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is_task_marked_as_failed = await self.fail_task(task, step, e.message)
if is_task_marked_as_failed:
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await self.clean_up_task(
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task=task,
last_step=step,
api_key=api_key,
close_browser_on_completion=close_browser_on_completion,
)
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else:
LOG.warning(
"Task isn't marked as failed, after step termination. NOT clean up the task",
task_id=task.task_id,
step_id=step.step_id,
)
return step, detailed_output, None
except FailedToSendWebhook:
LOG.exception(
"Failed to send webhook",
task_id=task.task_id,
step_id=step.step_id,
task=task,
step=step,
)
return step, detailed_output, next_step
except FailedToNavigateToUrl as e:
# Fail the task if we can't navigate to the URL and send the response
LOG.error(
"Failed to navigate to URL, marking task as failed, and sending webhook response",
task_id=task.task_id,
step_id=step.step_id,
url=e.url,
error_message=e.error_message,
)
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failure_reason = f"Failed to navigate to URL. URL:{e.url}, Error:{e.error_message}"
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is_task_marked_as_failed = await self.fail_task(task, step, failure_reason)
if is_task_marked_as_failed:
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await self.clean_up_task(
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task=task,
last_step=step,
api_key=api_key,
close_browser_on_completion=close_browser_on_completion,
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need_final_screenshot=False,
)
else:
LOG.warning(
"Task isn't marked as failed, after navigation failure. NOT clean up the task",
task_id=task.task_id,
step_id=step.step_id,
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)
return step, detailed_output, next_step
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except TaskAlreadyCanceled:
LOG.info(
"Task is already canceled, stopping execution",
task_id=task.task_id,
)
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await self.clean_up_task(
task=task,
last_step=step,
api_key=api_key,
need_call_webhook=False,
)
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return step, detailed_output, None
except InvalidTaskStatusTransition:
LOG.warning(
"Invalid task status transition",
task_id=task.task_id,
step_id=step.step_id,
)
# TODO: shall we send task response here?
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await self.clean_up_task(
task=task,
last_step=step,
api_key=api_key,
need_call_webhook=False,
)
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return step, detailed_output, None
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except Exception as e:
LOG.exception(
"Got an unexpected exception in step, marking task as failed",
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task_id=task.task_id,
step_id=step.step_id,
)
failure_reason = "unexpected exception"
if isinstance(e, SkyvernException):
failure_reason = f"unexpected SkyvernException({e.__class__.__name__})"
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is_task_marked_as_failed = await self.fail_task(task, step, failure_reason)
if is_task_marked_as_failed:
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await self.clean_up_task(
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task=task,
last_step=step,
api_key=api_key,
close_browser_on_completion=close_browser_on_completion,
)
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else:
LOG.warning(
"Task isn't marked as failed, after unexpected exception. NOT clean up the task",
task_id=task.task_id,
step_id=step.step_id,
)
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return step, detailed_output, None
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async def fail_task(self, task: Task, step: Step | None, reason: str | None) -> bool:
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try:
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if step is not None:
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await self.update_step(
step=step,
status=StepStatus.failed,
)
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await self.update_task(
task,
status=TaskStatus.failed,
failure_reason=reason,
)
return True
except TaskAlreadyCanceled:
LOG.info(
"Task is already canceled. Can't fail the task.",
task_id=task.task_id,
step_id=step.step_id if step else "",
)
return False
except InvalidTaskStatusTransition:
LOG.warning(
"Invalid task status transition while failing a task",
task_id=task.task_id,
step_id=step.step_id if step else "",
)
return False
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except Exception:
LOG.exception(
"Failed to update status and failure reason in database. Task might going to be time_out",
task_id=task.task_id,
step_id=step.step_id if step else "",
reason=reason,
)
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return True
async def agent_step(
self,
task: Task,
step: Step,
browser_state: BrowserState,
organization: Organization | None = None,
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task_block: TaskBlock | None = None,
) -> tuple[Step, DetailedAgentStepOutput]:
detailed_agent_step_output = DetailedAgentStepOutput(
scraped_page=None,
extract_action_prompt=None,
llm_response=None,
actions=None,
action_results=None,
actions_and_results=None,
)
try:
LOG.info(
"Starting agent step",
task_id=task.task_id,
step_id=step.step_id,
step_order=step.order,
step_retry=step.retry_index,
)
step = await self.update_step(step=step, status=StepStatus.running)
await app.AGENT_FUNCTION.prepare_step_execution(
organization=organization, task=task, step=step, browser_state=browser_state
)
(
scraped_page,
extract_action_prompt,
) = await self._build_and_record_step_prompt(
task,
step,
browser_state,
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organization,
)
detailed_agent_step_output.scraped_page = scraped_page
detailed_agent_step_output.extract_action_prompt = extract_action_prompt
json_response = None
actions: list[Action]
using_cached_action_plan = False
if not task.navigation_goal:
actions = [
CompleteAction(
reasoning="Task has no navigation goal.",
data_extraction_goal=task.data_extraction_goal,
organization_id=task.organization_id,
task_id=task.task_id,
workflow_run_id=task.workflow_run_id,
step_id=step.step_id,
step_order=step.order,
action_order=0,
confidence_float=1.0,
)
]
elif (
task_block
and task_block.cache_actions
and (actions := await retrieve_action_plan(task, step, scraped_page))
):
using_cached_action_plan = True
else:
self.async_operation_pool.run_operation(task.task_id, AgentPhase.llm)
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json_response = await app.LLM_API_HANDLER(
prompt=extract_action_prompt,
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step=step,
screenshots=scraped_page.screenshots,
)
json_response = await self.handle_potential_verification_code(
task,
step,
scraped_page,
browser_state,
json_response,
)
detailed_agent_step_output.llm_response = json_response
actions = parse_actions(task, step.step_id, step.order, scraped_page, json_response["actions"])
detailed_agent_step_output.actions = actions
if len(actions) == 0:
LOG.info(
"No actions to execute, marking step as failed",
task_id=task.task_id,
step_id=step.step_id,
step_order=step.order,
step_retry=step.retry_index,
)
step = await self.update_step(
step=step,
status=StepStatus.failed,
output=detailed_agent_step_output.to_agent_step_output(),
)
detailed_agent_step_output = DetailedAgentStepOutput(
scraped_page=scraped_page,
extract_action_prompt=extract_action_prompt,
llm_response=json_response,
actions=actions,
action_results=[],
actions_and_results=[],
step_exception=None,
)
return step, detailed_agent_step_output
# Execute the actions
LOG.info(
"Executing actions",
task_id=task.task_id,
step_id=step.step_id,
step_order=step.order,
step_retry=step.retry_index,
actions=actions,
)
action_results: list[ActionResult] = []
detailed_agent_step_output.action_results = action_results
# filter out wait action if there are other actions in the list
# we do this because WAIT action is considered as a failure
# which will block following actions if we don't remove it from the list
# if the list only contains WAIT action, we will execute WAIT action(s)
if len(actions) > 1:
wait_actions_to_skip = [action for action in actions if action.action_type == ActionType.WAIT]
wait_actions_len = len(wait_actions_to_skip)
# if there are wait actions and there are other actions in the list, skip wait actions
# if we are using cached action plan, we don't skip wait actions
if wait_actions_len > 0 and wait_actions_len < len(actions) and not using_cached_action_plan:
actions = [action for action in actions if action.action_type != ActionType.WAIT]
LOG.info(
"Skipping wait actions",
wait_actions_to_skip=wait_actions_to_skip,
actions=actions,
)
# initialize list of tuples and set actions as the first element of each tuple so that in the case
# of an exception, we can still see all the actions
detailed_agent_step_output.actions_and_results = [(action, []) for action in actions]
# build a linked action chain by the action_idx
action_linked_list: list[ActionLinkedNode] = []
element_id_to_action_index: dict[str, int] = dict()
for action_idx, action in enumerate(actions):
node = ActionLinkedNode(action=action)
action_linked_list.append(node)
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if not isinstance(action, WebAction):
continue
previous_action_idx = element_id_to_action_index.get(action.element_id)
if previous_action_idx is not None:
previous_node = action_linked_list[previous_action_idx]
previous_node.next = node
element_id_to_action_index[action.element_id] = action_idx
element_id_to_last_action: dict[str, int] = dict()
for action_idx, action_node in enumerate(action_linked_list):
action = action_node.action
if isinstance(action, WebAction):
previous_action_idx = element_id_to_last_action.get(action.element_id)
if previous_action_idx is not None:
LOG.warning(
"Duplicate action element id.",
task_id=task.task_id,
step_id=step.step_id,
step_order=step.order,
action=action,
)
previous_action, previous_result = detailed_agent_step_output.actions_and_results[
previous_action_idx
]
if len(previous_result) > 0 and previous_result[-1].success:
LOG.info(
"Previous action succeeded, but we'll still continue.",
task_id=task.task_id,
step_id=step.step_id,
step_order=step.order,
previous_action=previous_action,
previous_result=previous_result,
)
else:
LOG.warning(
"Previous action failed, so handle the next action.",
task_id=task.task_id,
step_id=step.step_id,
step_order=step.order,
previous_action=previous_action,
previous_result=previous_result,
)
element_id_to_last_action[action.element_id] = action_idx
self.async_operation_pool.run_operation(task.task_id, AgentPhase.action)
current_page = await browser_state.must_get_working_page()
results = await ActionHandler.handle_action(scraped_page, task, step, current_page, action)
detailed_agent_step_output.actions_and_results[action_idx] = (
action,
results,
)
# wait random time between actions to avoid detection
await asyncio.sleep(random.uniform(1.0, 2.0))
await self.record_artifacts_after_action(task, step, browser_state)
for result in results:
result.step_retry_number = step.retry_index
result.step_order = step.order
action_results.extend(results)
# Check the last result for this action. If that succeeded, assume the entire action is successful
if results and results[-1].success:
LOG.info(
"Action succeeded",
task_id=task.task_id,
step_id=step.step_id,
step_order=step.order,
step_retry=step.retry_index,
action_idx=action_idx,
action=action,
action_result=results,
)
elif results and not results[-1].success and not results[-1].stop_execution_on_failure:
LOG.warning(
"Action failed, but not stopping execution",
task_id=task.task_id,
step_id=step.step_id,
step_order=step.order,
step_retry=step.retry_index,
action_idx=action_idx,
action=action,
action_result=results,
)
else:
if action_node.next is not None:
LOG.warning(
"Action failed, but have duplicated element id in the action list. Continue excuting.",
task_id=task.task_id,
step_id=step.step_id,
step_order=step.order,
step_retry=step.retry_index,
action_idx=action_idx,
action=action,
next_action=action_node.next.action,
action_result=results,
)
continue
LOG.warning(
"Action failed, marking step as failed",
task_id=task.task_id,
step_id=step.step_id,
step_order=step.order,
step_retry=step.retry_index,
action_idx=action_idx,
action=action,
action_result=results,
actions_and_results=detailed_agent_step_output.actions_and_results,
)
# if the action failed, don't execute the rest of the actions, mark the step as failed, and retry
failed_step = await self.update_step(
step=step,
status=StepStatus.failed,
output=detailed_agent_step_output.to_agent_step_output(),
)
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return failed_step, detailed_agent_step_output.get_clean_detailed_output()
LOG.info(
"Actions executed successfully, marking step as completed",
task_id=task.task_id,
step_id=step.step_id,
step_order=step.order,
step_retry=step.retry_index,
action_results=action_results,
)
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# Check if Skyvern already returned a complete action, if so, don't run user goal check
has_decisive_action = False
if detailed_agent_step_output and detailed_agent_step_output.actions_and_results:
for action, results in detailed_agent_step_output.actions_and_results:
if isinstance(action, DecisiveAction):
has_decisive_action = True
break
task_completes_on_download = task_block and task_block.complete_on_download and task.workflow_run_id
if not has_decisive_action and not task_completes_on_download:
LOG.info("Checking if user goal is achieved after re-scraping the page")
# Check if navigation goal is achieved after re-scraping the page
new_scraped_page = await self._scrape_with_type(
task=task,
step=step,
browser_state=browser_state,
scrape_type=ScrapeType.NORMAL,
organization=organization,
)
if new_scraped_page is None:
LOG.warning("Failed to scrape the page before checking user goal success, skipping check...")
else:
working_page = await browser_state.must_get_working_page()
complete_action = await self.check_user_goal_complete(
page=working_page,
scraped_page=new_scraped_page,
task=task,
step=step,
)
if complete_action is not None:
LOG.info("User goal achieved, executing complete action")
complete_action.organization_id = task.organization_id
complete_action.workflow_run_id = task.workflow_run_id
complete_action.task_id = task.task_id
complete_action.step_id = step.step_id
complete_action.step_order = step.order
complete_action.action_order = len(detailed_agent_step_output.actions_and_results)
complete_results = await ActionHandler.handle_action(
scraped_page, task, step, working_page, complete_action
)
detailed_agent_step_output.actions_and_results.append((complete_action, complete_results))
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await self.record_artifacts_after_action(task, step, browser_state)
# If no action errors return the agent state and output
completed_step = await self.update_step(
step=step,
status=StepStatus.completed,
output=detailed_agent_step_output.to_agent_step_output(),
)
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return completed_step, detailed_agent_step_output.get_clean_detailed_output()
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except CancelledError:
LOG.exception(
"CancelledError in agent_step, marking step as failed",
task_id=task.task_id,
step_id=step.step_id,
step_order=step.order,
step_retry=step.retry_index,
)
detailed_agent_step_output.step_exception = "CancelledError"
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failed_step = await self.update_step(
step=step,
status=StepStatus.failed,
output=detailed_agent_step_output.to_agent_step_output(),
)
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return failed_step, detailed_agent_step_output.get_clean_detailed_output()
except Exception as e:
LOG.exception(
"Unexpected exception in agent_step, marking step as failed",
task_id=task.task_id,
step_id=step.step_id,
step_order=step.order,
step_retry=step.retry_index,
)
detailed_agent_step_output.step_exception = e.__class__.__name__
failed_step = await self.update_step(
step=step,
status=StepStatus.failed,
output=detailed_agent_step_output.to_agent_step_output(),
)
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return failed_step, detailed_agent_step_output.get_clean_detailed_output()
@staticmethod
async def check_user_goal_complete(
page: Page, scraped_page: ScrapedPage, task: Task, step: Step
) -> CompleteAction | None:
try:
verification_prompt = prompt_engine.load_prompt(
"check-user-goal",
navigation_goal=task.navigation_goal,
navigation_payload=task.navigation_payload,
elements=scraped_page.build_element_tree(ElementTreeFormat.HTML),
)
# this prompt is critical to our agent so let's use the primary LLM API handler
verification_response = await app.LLM_API_HANDLER(prompt=verification_prompt, step=step, screenshots=None)
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if "user_goal_achieved" not in verification_response or "thoughts" not in verification_response:
LOG.error(
"Invalid LLM response for user goal success verification, skipping verification",
verification_response=verification_response,
)
return None
user_goal_achieved: bool = verification_response["user_goal_achieved"]
# We don't want to return a complete action if the user goal is not achieved since we're checking at every step
if not user_goal_achieved:
return None
return CompleteAction(
reasoning=verification_response["thoughts"],
data_extraction_goal=task.data_extraction_goal,
)
except Exception:
LOG.error("LLM verification failed for complete action, skipping LLM verification", exc_info=True)
return None
async def record_artifacts_after_action(self, task: Task, step: Step, browser_state: BrowserState) -> None:
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working_page = await browser_state.get_working_page()
if not working_page:
raise BrowserStateMissingPage()
try:
screenshot = await browser_state.take_screenshot(full_page=True)
await app.ARTIFACT_MANAGER.create_artifact(
step=step,
artifact_type=ArtifactType.SCREENSHOT_ACTION,
data=screenshot,
)
except Exception:
LOG.error(
"Failed to record screenshot after action",
task_id=task.task_id,
step_id=step.step_id,
exc_info=True,
)
try:
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skyvern_frame = await SkyvernFrame.create_instance(frame=working_page)
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html = await skyvern_frame.get_content()
await app.ARTIFACT_MANAGER.create_artifact(
step=step,
artifact_type=ArtifactType.HTML_ACTION,
data=html.encode(),
)
except Exception:
LOG.error(
"Failed to record html after action",
task_id=task.task_id,
step_id=step.step_id,
exc_info=True,
)
try:
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video_artifacts = await app.BROWSER_MANAGER.get_video_artifacts(
task_id=task.task_id, browser_state=browser_state
)
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for video_artifact in video_artifacts:
await app.ARTIFACT_MANAGER.update_artifact_data(
artifact_id=video_artifact.video_artifact_id,
organization_id=task.organization_id,
data=video_artifact.video_data,
)
except Exception:
LOG.error(
"Failed to record video after action",
task_id=task.task_id,
step_id=step.step_id,
exc_info=True,
)
async def _initialize_execution_state(
self, task: Task, step: Step, workflow_run: WorkflowRun | None = None
) -> tuple[Step, BrowserState, DetailedAgentStepOutput]:
if workflow_run:
browser_state = await app.BROWSER_MANAGER.get_or_create_for_workflow_run(
workflow_run=workflow_run, url=task.url
)
else:
browser_state = await app.BROWSER_MANAGER.get_or_create_for_task(task)
# Initialize video artifact for the task here, afterwards it'll only get updated
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if browser_state and browser_state.browser_artifacts:
video_artifacts = await app.BROWSER_MANAGER.get_video_artifacts(
task_id=task.task_id, browser_state=browser_state
)
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for idx, video_artifact in enumerate(video_artifacts):
if video_artifact.video_artifact_id:
continue
video_artifact_id = await app.ARTIFACT_MANAGER.create_artifact(
step=step,
artifact_type=ArtifactType.RECORDING,
data=video_artifact.video_data,
)
video_artifacts[idx].video_artifact_id = video_artifact_id
app.BROWSER_MANAGER.set_video_artifact_for_task(task, video_artifacts)
detailed_output = DetailedAgentStepOutput(
scraped_page=None,
extract_action_prompt=None,
llm_response=None,
actions=None,
action_results=None,
actions_and_results=None,
step_exception=None,
)
return step, browser_state, detailed_output
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async def _scrape_with_type(
self,
task: Task,
step: Step,
browser_state: BrowserState,
scrape_type: ScrapeType,
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organization: Organization | None = None,
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) -> ScrapedPage | None:
if scrape_type == ScrapeType.NORMAL:
pass
elif scrape_type == ScrapeType.STOPLOADING:
LOG.info(
"Try to stop loading the page before scraping",
task_id=task.task_id,
step_id=step.step_id,
)
await browser_state.stop_page_loading()
elif scrape_type == ScrapeType.RELOAD:
LOG.info(
"Try to reload the page before scraping",
task_id=task.task_id,
step_id=step.step_id,
)
await browser_state.reload_page()
return await scrape_website(
browser_state,
task.url,
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app.AGENT_FUNCTION.cleanup_element_tree_factory(task=task, step=step, organization=organization),
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scrape_exclude=app.scrape_exclude,
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)
async def _build_and_record_step_prompt(
self,
task: Task,
step: Step,
browser_state: BrowserState,
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organization: Organization | None = None,
) -> tuple[ScrapedPage, str]:
# start the async tasks while running scrape_website
self.async_operation_pool.run_operation(task.task_id, AgentPhase.scrape)
# Scrape the web page and get the screenshot and the elements
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# HACK: try scrape_website three time to handle screenshot timeout
# first time: normal scrape to take screenshot
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# second time: try again the normal scrape, (stopping window loading before scraping barely helps, but causing problem)
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# third time: reload the page before scraping
scraped_page: ScrapedPage | None = None
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for idx, scrape_type in enumerate(SCRAPE_TYPE_ORDER):
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try:
scraped_page = await self._scrape_with_type(
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task=task,
step=step,
browser_state=browser_state,
scrape_type=scrape_type,
organization=organization,
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)
break
except FailedToTakeScreenshot as e:
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if idx < len(SCRAPE_TYPE_ORDER) - 1:
continue
LOG.error(
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"Failed to take screenshot after two normal attempts and reload-page retry",
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task_id=task.task_id,
step_id=step.step_id,
)
raise e
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if scraped_page is None:
raise EmptyScrapePage
await app.ARTIFACT_MANAGER.create_artifact(
step=step,
artifact_type=ArtifactType.HTML_SCRAPE,
data=scraped_page.html.encode(),
)
LOG.info(
"Scraped website",
task_id=task.task_id,
step_id=step.step_id,
step_order=step.order,
step_retry=step.retry_index,
num_elements=len(scraped_page.elements),
url=task.url,
)
# TODO: we only use HTML element for now, introduce a way to switch in the future
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element_tree_format = ElementTreeFormat.HTML
element_tree_in_prompt: str = scraped_page.build_element_tree(element_tree_format)
extract_action_prompt = await self._build_extract_action_prompt(
task,
browser_state,
element_tree_in_prompt,
verification_code_check=bool(task.totp_verification_url or task.totp_identifier),
expire_verification_code=True,
)
await app.ARTIFACT_MANAGER.create_artifact(
step=step,
artifact_type=ArtifactType.VISIBLE_ELEMENTS_ID_CSS_MAP,
data=json.dumps(scraped_page.id_to_css_dict, indent=2).encode(),
)
await app.ARTIFACT_MANAGER.create_artifact(
step=step,
artifact_type=ArtifactType.VISIBLE_ELEMENTS_ID_FRAME_MAP,
data=json.dumps(scraped_page.id_to_frame_dict, indent=2).encode(),
)
await app.ARTIFACT_MANAGER.create_artifact(
step=step,
artifact_type=ArtifactType.VISIBLE_ELEMENTS_TREE,
data=json.dumps(scraped_page.element_tree, indent=2).encode(),
)
await app.ARTIFACT_MANAGER.create_artifact(
step=step,
artifact_type=ArtifactType.VISIBLE_ELEMENTS_TREE_TRIMMED,
data=json.dumps(scraped_page.element_tree_trimmed, indent=2).encode(),
)
await app.ARTIFACT_MANAGER.create_artifact(
step=step,
artifact_type=ArtifactType.VISIBLE_ELEMENTS_TREE_IN_PROMPT,
data=element_tree_in_prompt.encode(),
)
return scraped_page, extract_action_prompt
async def _build_extract_action_prompt(
self,
task: Task,
browser_state: BrowserState,
element_tree_in_prompt: str,
verification_code_check: bool = False,
expire_verification_code: bool = False,
) -> str:
actions_and_results_str = await self._get_action_results(task)
# Generate the extract action prompt
navigation_goal = task.navigation_goal
starting_url = task.url
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page = await browser_state.get_working_page()
current_url = (
await SkyvernFrame.evaluate(frame=page, expression="() => document.location.href") if page else starting_url
)
final_navigation_payload = self._build_navigation_payload(
task, expire_verification_code=expire_verification_code
)
return prompt_engine.load_prompt(
"extract-action",
navigation_goal=navigation_goal,
navigation_payload_str=json.dumps(final_navigation_payload),
starting_url=starting_url,
current_url=current_url,
elements=element_tree_in_prompt,
data_extraction_goal=task.data_extraction_goal,
action_history=actions_and_results_str,
error_code_mapping_str=(json.dumps(task.error_code_mapping) if task.error_code_mapping else None),
utc_datetime=datetime.utcnow().strftime("%Y-%m-%d %H:%M"),
verification_code_check=verification_code_check,
)
def _build_navigation_payload(
self,
task: Task,
expire_verification_code: bool = False,
) -> dict[str, Any] | list | str | None:
final_navigation_payload = task.navigation_payload
current_context = skyvern_context.ensure_context()
verification_code = current_context.totp_codes.get(task.task_id)
if (task.totp_verification_url or task.totp_identifier) and verification_code:
if (
isinstance(final_navigation_payload, dict)
and SPECIAL_FIELD_VERIFICATION_CODE not in final_navigation_payload
):
final_navigation_payload[SPECIAL_FIELD_VERIFICATION_CODE] = verification_code
elif (
isinstance(final_navigation_payload, str)
and SPECIAL_FIELD_VERIFICATION_CODE not in final_navigation_payload
):
final_navigation_payload = (
final_navigation_payload + "\n" + str({SPECIAL_FIELD_VERIFICATION_CODE: verification_code})
)
if expire_verification_code:
current_context.totp_codes.pop(task.task_id)
return final_navigation_payload
async def _get_action_results(self, task: Task) -> str:
# Get action results from the last app.SETTINGS.PROMPT_ACTION_HISTORY_WINDOW steps
steps = await app.DATABASE.get_task_steps(task_id=task.task_id, organization_id=task.organization_id)
# the last step is always the newly created one and it should be excluded from the history window
window_steps = steps[-1 - SettingsManager.get_settings().PROMPT_ACTION_HISTORY_WINDOW : -1]
actions_and_results: list[tuple[Action, list[ActionResult]]] = []
for window_step in window_steps:
if window_step.output and window_step.output.actions_and_results:
actions_and_results.extend(window_step.output.actions_and_results)
# exclude successful action from history
return json.dumps(
[
{
"action": action.model_dump(
exclude_none=True,
include={"action_type", "element_id", "status", "reasoning", "option", "download"},
),
"results": [
result.model_dump(
exclude_none=True,
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include={
"success",
"exception_type",
"exception_message",
},
)
for result in results
],
}
for action, results in actions_and_results
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if len(results) > 0
]
)
async def get_extracted_information_for_task(self, task: Task) -> dict[str, Any] | list | str | None:
"""
Find the last successful ScrapeAction for the task and return the extracted information.
"""
steps = await app.DATABASE.get_task_steps(
task_id=task.task_id,
organization_id=task.organization_id,
)
for step in reversed(steps):
if step.status != StepStatus.completed:
continue
if not step.output or not step.output.actions_and_results:
continue
for action, action_results in step.output.actions_and_results:
if action.action_type != ActionType.COMPLETE:
continue
for action_result in action_results:
if action_result.success:
LOG.info(
"Extracted information for task",
task_id=task.task_id,
step_id=step.step_id,
extracted_information=action_result.data,
)
return action_result.data
LOG.warning(
"Failed to find extracted information for task",
task_id=task.task_id,
)
return None
async def get_failure_reason_for_task(self, task: Task) -> str | None:
"""
Find the TerminateAction for the task and return the reasoning.
# TODO (kerem): Also return meaningful exceptions when we add them [WYV-311]
"""
steps = await app.DATABASE.get_task_steps(
task_id=task.task_id,
organization_id=task.organization_id,
)
for step in reversed(steps):
if step.status != StepStatus.completed:
continue
if not step.output:
continue
if step.output.actions_and_results:
for action, action_results in step.output.actions_and_results:
if action.action_type == ActionType.TERMINATE:
return action.reasoning
LOG.error(
"Failed to find failure reasoning for task",
task_id=task.task_id,
)
return None
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async def clean_up_task(
self,
task: Task,
last_step: Step,
api_key: str | None = None,
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need_call_webhook: bool = True,
close_browser_on_completion: bool = True,
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need_final_screenshot: bool = True,
) -> None:
"""
send the task response to the webhook callback url
"""
# refresh the task from the db to get the latest status
try:
refreshed_task = await app.DATABASE.get_task(task_id=task.task_id, organization_id=task.organization_id)
if not refreshed_task:
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LOG.error("Failed to get task from db when clean up task", task_id=task.task_id)
raise TaskNotFound(task_id=task.task_id)
except Exception as e:
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LOG.exception(
"Failed to get task from db when clean up task",
task_id=task.task_id,
)
raise TaskNotFound(task_id=task.task_id) from e
task = refreshed_task
# log the task status as an event
analytics.capture("skyvern-oss-agent-task-status", {"status": task.status})
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if need_final_screenshot:
# Take one last screenshot and create an artifact before closing the browser to see the final state
# We don't need the artifacts and send the webhook response directly only when there is an issue with the browser
# initialization. In this case, we don't have any artifacts to send and we can't take final screenshots etc.
# since the browser is not initialized properly or the proxy is not working.
browser_state = app.BROWSER_MANAGER.get_for_task(task.task_id)
if browser_state is not None and await browser_state.get_working_page() is not None:
try:
screenshot = await browser_state.take_screenshot(full_page=True)
await app.ARTIFACT_MANAGER.create_artifact(
step=last_step,
artifact_type=ArtifactType.SCREENSHOT_FINAL,
data=screenshot,
)
except TargetClosedError:
LOG.warning(
"Failed to take screenshot before sending task response, page is closed",
task_id=task.task_id,
step_id=last_step.step_id,
)
except Exception:
LOG.exception(
"Failed to take screenshot before sending task response",
task_id=task.task_id,
step_id=last_step.step_id,
)
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# if it's a task block from workflow run,
# we don't need to close the browser, save browser artifacts, or call webhook
if task.workflow_run_id:
LOG.info(
"Task is part of a workflow run, not sending a webhook response",
task_id=task.task_id,
workflow_run_id=task.workflow_run_id,
)
return
await self.async_operation_pool.remove_task(task.task_id)
await self.cleanup_browser_and_create_artifacts(close_browser_on_completion, last_step, task)
# Wait for all tasks to complete before generating the links for the artifacts
await app.ARTIFACT_MANAGER.wait_for_upload_aiotasks_for_task(task.task_id)
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if need_call_webhook:
await self.execute_task_webhook(task=task, last_step=last_step, api_key=api_key)
async def execute_task_webhook(
self,
task: Task,
last_step: Step,
api_key: str | None,
) -> None:
if not api_key:
LOG.warning(
"Request has no api key. Not sending task response",
task_id=task.task_id,
)
return
if not task.webhook_callback_url:
LOG.warning(
"Task has no webhook callback url. Not sending task response",
task_id=task.task_id,
)
return
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# get the artifact of the screenshot and get the screenshot_url
screenshot_artifact = await app.DATABASE.get_artifact(
task_id=task.task_id,
step_id=last_step.step_id,
artifact_type=ArtifactType.SCREENSHOT_FINAL,
organization_id=task.organization_id,
)
if screenshot_artifact is None:
screenshot_url = None
if screenshot_artifact:
screenshot_url = await app.ARTIFACT_MANAGER.get_share_link(screenshot_artifact)
recording_artifact = await app.DATABASE.get_artifact(
task_id=task.task_id,
step_id=last_step.step_id,
artifact_type=ArtifactType.RECORDING,
organization_id=task.organization_id,
)
recording_url = None
if recording_artifact:
recording_url = await app.ARTIFACT_MANAGER.get_share_link(recording_artifact)
# get the artifact of the last TASK_RESPONSE_ACTION_SCREENSHOT_COUNT screenshots and get the screenshot_url
latest_action_screenshot_artifacts = await app.DATABASE.get_latest_n_artifacts(
task_id=task.task_id,
organization_id=task.organization_id,
artifact_types=[ArtifactType.SCREENSHOT_ACTION],
n=SettingsManager.get_settings().TASK_RESPONSE_ACTION_SCREENSHOT_COUNT,
)
latest_action_screenshot_urls: list[str] | None = []
if latest_action_screenshot_artifacts:
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latest_action_screenshot_urls = await app.ARTIFACT_MANAGER.get_share_links(
latest_action_screenshot_artifacts
)
else:
LOG.error("Failed to get latest action screenshots")
# get the latest task from the db to get the latest status, extracted_information, and failure_reason
task_from_db = await app.DATABASE.get_task(task_id=task.task_id, organization_id=task.organization_id)
if not task_from_db:
LOG.error("Failed to get task from db when sending task response")
raise TaskNotFound(task_id=task.task_id)
task = task_from_db
task_response = task.to_task_response(
action_screenshot_urls=latest_action_screenshot_urls,
screenshot_url=screenshot_url,
recording_url=recording_url,
)
else:
task_response = task.to_task_response()
if not task.webhook_callback_url:
LOG.info("Task has no webhook callback url. Not sending task response")
return
# send task_response to the webhook callback url
timestamp = str(int(datetime.utcnow().timestamp()))
payload = task_response.model_dump_json(exclude={"request"})
signature = generate_skyvern_signature(
payload=payload,
api_key=api_key,
)
headers = {
"x-skyvern-timestamp": timestamp,
"x-skyvern-signature": signature,
"Content-Type": "application/json",
}
LOG.info(
"Sending task response to webhook callback url",
task_id=task.task_id,
webhook_callback_url=task.webhook_callback_url,
payload=payload,
headers=headers,
)
try:
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resp = await httpx.AsyncClient().post(
task.webhook_callback_url, data=payload, headers=headers, timeout=httpx.Timeout(30.0)
)
if resp.status_code == 200:
LOG.info(
"Webhook sent successfully",
task_id=task.task_id,
resp_code=resp.status_code,
resp_text=resp.text,
)
else:
LOG.info(
"Webhook failed",
task_id=task.task_id,
resp=resp,
resp_code=resp.status_code,
resp_text=resp.text,
)
except Exception as e:
raise FailedToSendWebhook(task_id=task.task_id) from e
async def cleanup_browser_and_create_artifacts(
self, close_browser_on_completion: bool, last_step: Step, task: Task
) -> None:
# We need to close the browser even if there is no webhook callback url or api key
browser_state = await app.BROWSER_MANAGER.cleanup_for_task(task.task_id, close_browser_on_completion)
if browser_state:
# Update recording artifact after closing the browser, so we can get an accurate recording
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video_artifacts = await app.BROWSER_MANAGER.get_video_artifacts(
task_id=task.task_id, browser_state=browser_state
)
for video_artifact in video_artifacts:
await app.ARTIFACT_MANAGER.update_artifact_data(
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artifact_id=video_artifact.video_artifact_id,
organization_id=task.organization_id,
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data=video_artifact.video_data,
)
har_data = await app.BROWSER_MANAGER.get_har_data(task_id=task.task_id, browser_state=browser_state)
if har_data:
await app.ARTIFACT_MANAGER.create_artifact(
step=last_step,
artifact_type=ArtifactType.HAR,
data=har_data,
)
browser_log = await app.BROWSER_MANAGER.get_browser_console_log(
task_id=task.task_id, browser_state=browser_state
)
if browser_log:
await app.ARTIFACT_MANAGER.create_artifact(
step=last_step,
artifact_type=ArtifactType.BROWSER_CONSOLE_LOG,
data=browser_log,
)
if browser_state.browser_context and browser_state.browser_artifacts.traces_dir:
trace_path = f"{browser_state.browser_artifacts.traces_dir}/{task.task_id}.zip"
await app.ARTIFACT_MANAGER.create_artifact(
step=last_step,
artifact_type=ArtifactType.TRACE,
path=trace_path,
)
else:
LOG.warning(
"BrowserState is missing before sending response to webhook_callback_url",
web_hook_url=task.webhook_callback_url,
)
async def update_step(
self,
step: Step,
status: StepStatus | None = None,
output: AgentStepOutput | None = None,
is_last: bool | None = None,
retry_index: int | None = None,
) -> Step:
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step.validate_update(status, output, is_last)
updates: dict[str, Any] = {}
if status is not None:
updates["status"] = status
if output is not None:
updates["output"] = output
if is_last is not None:
updates["is_last"] = is_last
if retry_index is not None:
updates["retry_index"] = retry_index
update_comparison = {
key: {"old": getattr(step, key), "new": value}
for key, value in updates.items()
if getattr(step, key) != value and key != "output"
}
LOG.info(
"Updating step in db",
task_id=step.task_id,
step_id=step.step_id,
diff=update_comparison,
)
return await app.DATABASE.update_step(
task_id=step.task_id,
step_id=step.step_id,
organization_id=step.organization_id,
**updates,
)
async def update_task(
self,
task: Task,
status: TaskStatus,
extracted_information: dict[str, Any] | list | str | None = None,
failure_reason: str | None = None,
) -> Task:
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# refresh task from db to get the latest status
task_from_db = await app.DATABASE.get_task(task_id=task.task_id, organization_id=task.organization_id)
if task_from_db:
task = task_from_db
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task.validate_update(status, extracted_information, failure_reason)
updates: dict[str, Any] = {}
if status is not None:
updates["status"] = status
if extracted_information is not None:
updates["extracted_information"] = extracted_information
if failure_reason is not None:
updates["failure_reason"] = failure_reason
update_comparison = {
key: {"old": getattr(task, key), "new": value}
for key, value in updates.items()
if getattr(task, key) != value
}
LOG.info("Updating task in db", task_id=task.task_id, diff=update_comparison)
return await app.DATABASE.update_task(
task.task_id,
organization_id=task.organization_id,
**updates,
)
async def handle_failed_step(self, organization: Organization, task: Task, step: Step) -> Step | None:
max_retries_per_step = (
organization.max_retries_per_step
# we need to check by None because 0 is a valid value for max_retries_per_step
if organization.max_retries_per_step is not None
else SettingsManager.get_settings().MAX_RETRIES_PER_STEP
)
if step.retry_index >= max_retries_per_step:
LOG.warning(
"Step failed after max retries, marking task as failed",
task_id=task.task_id,
step_id=step.step_id,
step_order=step.order,
step_retry=step.retry_index,
max_retries=SettingsManager.get_settings().MAX_RETRIES_PER_STEP,
)
await self.update_task(
task,
TaskStatus.failed,
failure_reason=f"Max retries per step ({max_retries_per_step}) exceeded",
)
return None
else:
LOG.warning(
"Step failed, retrying",
task_id=task.task_id,
step_id=step.step_id,
step_order=step.order,
step_retry=step.retry_index,
)
next_step = await app.DATABASE.create_step(
task_id=task.task_id,
organization_id=task.organization_id,
order=step.order,
retry_index=step.retry_index + 1,
)
return next_step
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async def summary_failure_reason_for_max_steps(
self,
organization: Organization,
task: Task,
step: Step,
page: Page | None,
) -> str:
try:
steps = await app.DATABASE.get_task_steps(
task_id=task.task_id, organization_id=organization.organization_id
)
steps_results = []
for step_cnt, step in enumerate(steps):
if step.output is None:
continue
if len(step.output.errors) > 0:
return ";".join([repr(err) for err in step.output.errors])
if step.output.actions_and_results is None:
continue
action_result_summary: list[str] = []
step_result: dict[str, Any] = {
"order": step_cnt,
}
for action, action_results in step.output.actions_and_results:
if len(action_results) == 0:
continue
action_result_summary.append(
f"{action.reasoning}(action_type={action.action_type}, result={'success' if action_results[-1].success else 'failed'})"
)
step_result["actions_result"] = action_result_summary
steps_results.append(step_result)
screenshots: list[bytes] = []
if page is not None:
screenshots = await SkyvernFrame.take_split_screenshots(page=page, url=page.url)
prompt = prompt_engine.load_prompt(
"summarize-max-steps-reason",
step_count=len(steps),
navigation_goal=task.navigation_goal,
navigation_payload=task.navigation_payload,
steps=steps_results,
)
json_response = await app.LLM_API_HANDLER(prompt=prompt, screenshots=screenshots, step=step)
return json_response.get("reasoning", "")
except Exception:
LOG.exception("Failed to summary the failure reason", task=task.task_id)
return ""
async def handle_completed_step(
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self,
organization: Organization,
task: Task,
step: Step,
page: Page | None,
) -> tuple[bool | None, Step | None, Step | None]:
if step.is_goal_achieved():
LOG.info(
"Step completed and goal achieved, marking task as completed",
task_id=task.task_id,
step_id=step.step_id,
step_order=step.order,
step_retry=step.retry_index,
output=step.output,
)
last_step = await self.update_step(step, is_last=True)
extracted_information = await self.get_extracted_information_for_task(task)
await self.update_task(
task,
status=TaskStatus.completed,
extracted_information=extracted_information,
)
return True, last_step, None
if step.is_terminated():
LOG.info(
"Step completed and terminated by the agent, marking task as terminated",
task_id=task.task_id,
step_id=step.step_id,
step_order=step.order,
step_retry=step.retry_index,
output=step.output,
)
last_step = await self.update_step(step, is_last=True)
failure_reason = await self.get_failure_reason_for_task(task)
await self.update_task(task, status=TaskStatus.terminated, failure_reason=failure_reason)
return False, last_step, None
# If the max steps are exceeded, mark the current step as the last step and conclude the task
context = skyvern_context.current()
override_max_steps_per_run = context.max_steps_override if context else None
max_steps_per_run = (
override_max_steps_per_run
or task.max_steps_per_run
or organization.max_steps_per_run
or SettingsManager.get_settings().MAX_STEPS_PER_RUN
)
if step.order + 1 >= max_steps_per_run:
LOG.info(
"Step completed but max steps reached, marking task as failed",
task_id=task.task_id,
step_id=step.step_id,
step_order=step.order,
step_retry=step.retry_index,
max_steps=max_steps_per_run,
)
last_step = await self.update_step(step, is_last=True)
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failure_reason = await self.summary_failure_reason_for_max_steps(
organization=organization,
task=task,
step=step,
page=page,
)
if not failure_reason:
failure_reason = f"Max steps per task ({max_steps_per_run}) exceeded"
await self.update_task(
task,
status=TaskStatus.failed,
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failure_reason=failure_reason,
)
return False, last_step, None
else:
LOG.info(
"Step completed, creating next step",
task_id=task.task_id,
step_id=step.step_id,
step_order=step.order,
step_retry=step.retry_index,
)
next_step = await app.DATABASE.create_step(
task_id=task.task_id,
order=step.order + 1,
retry_index=0,
organization_id=task.organization_id,
)
if step.order == int(
max_steps_per_run * SettingsManager.get_settings().LONG_RUNNING_TASK_WARNING_RATIO - 1
):
LOG.info(
"Long running task warning",
order=step.order,
max_steps=max_steps_per_run,
warning_ratio=SettingsManager.get_settings().LONG_RUNNING_TASK_WARNING_RATIO,
)
return None, None, next_step
async def handle_potential_verification_code(
self,
task: Task,
step: Step,
scraped_page: ScrapedPage,
browser_state: BrowserState,
json_response: dict[str, Any],
) -> dict[str, Any]:
need_verification_code = json_response.get("need_verification_code")
if need_verification_code and (task.totp_verification_url or task.totp_identifier) and task.organization_id:
LOG.info("Need verification code", step_id=step.step_id)
verification_code = await poll_verification_code(
task.task_id,
task.organization_id,
totp_verification_url=task.totp_verification_url,
totp_identifier=task.totp_identifier,
)
current_context = skyvern_context.ensure_context()
current_context.totp_codes[task.task_id] = verification_code
element_tree_in_prompt: str = scraped_page.build_element_tree(ElementTreeFormat.HTML)
extract_action_prompt = await self._build_extract_action_prompt(
task,
browser_state,
element_tree_in_prompt,
verification_code_check=False,
expire_verification_code=True,
)
return await app.LLM_API_HANDLER(
prompt=extract_action_prompt,
step=step,
screenshots=scraped_page.screenshots,
)
return json_response
@staticmethod
async def get_task_errors(task: Task) -> list[UserDefinedError]:
steps = await app.DATABASE.get_task_steps(task_id=task.task_id, organization_id=task.organization_id)
errors = []
for step in steps:
if step.output and step.output.errors:
errors.extend(step.output.errors)
return errors
@staticmethod
async def update_task_errors_from_detailed_output(
task: Task, detailed_step_output: DetailedAgentStepOutput
) -> Task:
task_errors = task.errors
step_errors = detailed_step_output.extract_errors() or []
task_errors.extend([error.model_dump() for error in step_errors])
return await app.DATABASE.update_task(
task_id=task.task_id,
organization_id=task.organization_id,
errors=task_errors,
)