Files
ragflow/agent/canvas.py
Öndery 742188c3bb feat(agent): report accurate aggregated token usage and propagate session/user + input/output to Langfuse for agent runs (#16420)
### What problem does this PR solve?

_Briefly describe what this PR aims to solve. Include background context
that will help reviewers understand the purpose of the PR._

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)
- [x] New Feature (non-breaking change which adds functionality)
- [x] Other (please describe):

## Summary

Agent (Canvas) runs previously did not surface token usage in the SSE
stream, and RAGFlow's own Langfuse generations for agent runs were
missing the prompt/completion split and the session/user correlation.
This made it impossible for an external caller (or Langfuse) to
reconcile an agent turn's cost with the upstream provider (e.g.
OpenRouter), because a single turn can issue several distinct LLM calls
(query rewriting / cross-language translation, multi-round tool
reasoning, nested sub-agents, and the final answer).

This PR introduces a per-run token usage sink so that **every** LLM call
in a run is aggregated and reported once, and enriches Langfuse
generations with the prompt/completion split plus session/user
attributes.

## What changes

### 1. Per-run token usage sink (`common/token_utils.py`)

- Adds two `contextvars`: `token_usage_sink` (a mutable per-run
accumulator) and `langfuse_run_attrs` (session_id/user_id for the run).
- Adds `record_run_token_usage(...)` (thread-safe via a lock, because
`thread_pool_exec` copies the context into worker threads that share the
sink dict) and `usage_from_response(...)` which extracts a
`{prompt_tokens, completion_tokens, total_tokens}` split from
OpenAI/OpenRouter-style responses.

### 2. Provider layer captures the prompt/completion split
(`rag/llm/chat_model.py`)

- `LiteLLMBase` and `Base` now store `self.last_usage`
(prompt/completion/total) for the most recent chat call, in both the
plain and tool-calling paths.
- Streaming requests set `stream_options.include_usage = True` (LiteLLM
path) so the authoritative usage arrives on the final chunk; this is
read even on the usage-only chunk that carries no `choices`.
- Fixes a multi-round accounting bug in `*_with_tools`: token totals
were **overwritten** by each round (`total_tokens = tol`) instead of
accumulated, undercounting multi-round tool conversations. Each round is
now committed to a running aggregate.

### 3. LLMBundle reports usage once, per call
(`api/db/services/llm_service.py`)

- New `_report_usage(total_tokens)` records the call's usage into the
active run sink and returns the prompt/completion/total split for
Langfuse. The split is only used when it is consistent with the
authoritative total; otherwise only the total is reported.
- All three chat entry points (`async_chat`, `async_chat_streamly`,
`async_chat_streamly_delta`) now emit `usage_details` with
`input`/`output`/`total` instead of total-only.
- `_start_langfuse_observation` now applies `session_id`/`user_id` from
the per-run context (`langfuse_run_attrs`) so agent-run generations are
correctly grouped, even though agent LLMBundles are constructed without
those attributes.

### 4. Canvas installs the sink and emits the aggregate
(`agent/canvas.py`)

- `Canvas.run()` installs a fresh `token_usage_sink` and
`langfuse_run_attrs` (from `user_id`/`session_id`) at the start of every
turn.
- `message_end` now includes an aggregated `usage` object:
`{prompt_tokens, completion_tokens, total_tokens, calls}` covering all
LLM calls in the run.

### 5. Pass session id into the run
(`api/db/services/canvas_service.py`)

- `completion()` forwards `session_id` to `Canvas.run()` for Langfuse
session correlation.

## Why a context variable

LLM calls in an agent run originate from many places that each build
their own `LLMBundle` (e.g. `cross_languages`/`keyword_extraction`
helpers, the Agent component, and nested sub-agents invoked as tools). A
run-scoped context variable is the only non-invasive chokepoint that
captures all of them exactly once, including nested agents (which run in
the same async context) and thread-pool tools (the executor copies the
context).

## Behavior / compatibility

- No public API or wire-format removal: `message_end` gains an
additional optional `usage` field; existing consumers are unaffected.
- When a provider does not return authoritative usage, behavior falls
back to the previous token estimate (total only, no split).
- Non-agent flows (Dataflow `Pipeline`, sync `Graph.run`) are untouched.

## Testing
- [x] Simple agent answer: `message_end.usage.total_tokens` matches
provider usage.
- [x] Agent with cross-language retrieval: aggregate equals the sum of
both provider calls.
- [x] Tool-calling agent (multi-round): total accumulates across rounds.
- [x] Nested agent (agent-as-tool): sub-agent tokens included in the
parent run total.
- [x] Langfuse: agent generations show input/output split and are
grouped by session/user.

---------

Co-authored-by: yzc <yuzhichang@gmail.com>
Co-authored-by: Cursor <cursoragent@cursor.com>
2026-07-02 09:35:28 +08:00

963 lines
39 KiB
Python

#
# Copyright 2024 The InfiniFlow Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
import asyncio
import base64
import contextvars
import datetime
import inspect
import json
import logging
import re
import time
from concurrent.futures import ThreadPoolExecutor
from copy import deepcopy
from functools import partial
from typing import Any, Union, Tuple
from agent.component import component_class
from agent.component.base import ComponentBase
from agent.dsl_migration import normalize_chunker_dsl
from api.db.services.file_service import FileService
from api.db.services.llm_service import LLMBundle
from api.db.services.task_service import has_canceled
from api.db.joint_services.tenant_model_service import get_tenant_default_model_by_type
from common.constants import LLMType
from common.misc_utils import get_uuid, hash_str2int
from common.exceptions import TaskCanceledException
from common.token_utils import token_usage_sink, langfuse_run_attrs
from rag.prompts.generator import chunks_format
from rag.utils.redis_conn import REDIS_CONN
from rag.utils.tts_cache import synthesize_with_cache
_logger = logging.getLogger(__name__)
class Graph:
"""
dsl = {
"components": {
"begin": {
"obj":{
"component_name": "Begin",
"params": {},
},
"downstream": ["answer_0"],
"upstream": [],
},
"retrieval_0": {
"obj": {
"component_name": "Retrieval",
"params": {}
},
"downstream": ["generate_0"],
"upstream": ["answer_0"],
},
"generate_0": {
"obj": {
"component_name": "Generate",
"params": {}
},
"downstream": ["answer_0"],
"upstream": ["retrieval_0"],
}
},
"history": [],
"path": ["begin"],
"retrieval": {"chunks": [], "doc_aggs": []},
"globals": {
"sys.query": "",
"sys.user_id": tenant_id,
"sys.conversation_turns": 0,
"sys.files": []
}
}
"""
def __init__(self, dsl: str, tenant_id=None, task_id=None, custom_header=None):
self.path = []
self.components = {}
self.error = ""
# Accept legacy DSL on read, but keep the in-memory canvas in the latest schema.
self.dsl = normalize_chunker_dsl(json.loads(dsl))
self._tenant_id = tenant_id
self.task_id = task_id if task_id else get_uuid()
self.custom_header = custom_header
self._thread_pool = ThreadPoolExecutor(max_workers=5)
self.load()
def load(self):
self.components = self.dsl["components"]
cpn_nms = set([])
for k, cpn in self.components.items():
cpn_nms.add(cpn["obj"]["component_name"])
param = component_class(cpn["obj"]["component_name"] + "Param")()
cpn["obj"]["params"]["custom_header"] = self.custom_header
param.update(cpn["obj"]["params"])
try:
param.check()
except Exception as e:
raise ValueError(self.get_component_name(k) + f": {e}")
cpn["obj"] = component_class(cpn["obj"]["component_name"])(self, k, param)
self.path = self.dsl["path"]
def __str__(self):
self.dsl["path"] = self.path
self.dsl["task_id"] = self.task_id
dsl = {"components": {}}
for k in self.dsl.keys():
if k in ["components"]:
continue
try:
dsl[k] = deepcopy(self.dsl[k])
except Exception as e:
logging.warning("Graph.__str__: deepcopy failed for dsl key '%s' (type=%s): %s. Using shallow reference.", k, type(self.dsl[k]).__name__, e)
dsl[k] = self.dsl[k]
for k, cpn in self.components.items():
if k not in dsl["components"]:
dsl["components"][k] = {}
for c in cpn.keys():
if c == "obj":
dsl["components"][k][c] = json.loads(str(cpn["obj"]))
continue
try:
dsl["components"][k][c] = deepcopy(cpn[c])
except Exception as e:
logging.warning("Graph.__str__: deepcopy failed for component '%s' key '%s' (type=%s): %s. Using shallow reference.", k, c, type(cpn[c]).__name__, e)
dsl["components"][k][c] = cpn[c]
def _serialize_default(obj):
if callable(obj):
return None
logging.warning("Graph.__str__: JSON fallback via str() for type=%s", type(obj).__name__)
return str(obj)
return json.dumps(dsl, ensure_ascii=False, default=_serialize_default)
def reset(self):
self.path = []
for k, cpn in self.components.items():
self.components[k]["obj"].reset()
try:
REDIS_CONN.delete(f"{self.task_id}-logs")
REDIS_CONN.delete(f"{self.task_id}-cancel")
except Exception as e:
logging.exception(e)
def get_component_name(self, cid):
for n in self.dsl.get("graph", {}).get("nodes", []):
if cid == n["id"]:
return n["data"]["name"]
return ""
def run(self, **kwargs):
raise NotImplementedError()
def get_component(self, cpn_id) -> Union[None, dict[str, Any]]:
return self.components.get(cpn_id)
def get_component_obj(self, cpn_id) -> ComponentBase:
return self.components.get(cpn_id)["obj"]
def get_component_type(self, cpn_id) -> str:
return self.components.get(cpn_id)["obj"].component_name
def get_component_input_form(self, cpn_id) -> dict:
return self.components.get(cpn_id)["obj"].get_input_form()
def get_tenant_id(self):
return self._tenant_id
def get_value_with_variable(self, value: str) -> Any:
pat = re.compile(r"\{* *\{([a-zA-Z:0-9]+@[A-Za-z0-9_.-]+|sys\.[A-Za-z0-9_.]+|env\.[A-Za-z0-9_.]+)\} *\}*")
out_parts = []
last = 0
for m in pat.finditer(value):
out_parts.append(value[last : m.start()])
key = m.group(1)
v = self.get_variable_value(key)
if v is None:
rep = ""
elif isinstance(v, partial):
buf = []
for chunk in v():
buf.append(chunk)
rep = "".join(buf)
elif isinstance(v, str):
rep = v
else:
rep = json.dumps(v, ensure_ascii=False)
out_parts.append(rep)
last = m.end()
out_parts.append(value[last:])
return "".join(out_parts)
def get_variable_value(self, exp: str) -> Any:
exp = exp.strip("{").strip("}").strip(" ").strip("{").strip("}")
if exp.find("@") < 0:
return self.globals[exp]
cpn_id, var_nm = exp.split("@")
cpn = self.get_component(cpn_id)
if not cpn:
raise Exception(f"Can't find variable: '{cpn_id}@{var_nm}'")
parts = var_nm.split(".", 1)
root_key = parts[0]
rest = parts[1] if len(parts) > 1 else ""
root_val = cpn["obj"].output(root_key)
if not rest:
return root_val
return self.get_variable_param_value(root_val, rest)
def get_variable_param_value(self, obj: Any, path: str) -> Any:
cur = obj
if not path:
return cur
for key in path.split("."):
if cur is None:
return None
if isinstance(cur, str):
try:
cur = json.loads(cur)
except Exception:
return None
if isinstance(cur, dict):
cur = cur.get(key)
continue
if isinstance(cur, (list, tuple)):
try:
idx = int(key)
cur = cur[idx]
except Exception:
return None
continue
cur = getattr(cur, key, None)
return cur
def set_variable_value(self, exp: str, value):
exp = exp.strip("{").strip("}").strip(" ").strip("{").strip("}")
if exp.find("@") < 0:
self.globals[exp] = value
return
cpn_id, var_nm = exp.split("@")
cpn = self.get_component(cpn_id)
if not cpn:
raise Exception(f"Can't find variable: '{cpn_id}@{var_nm}'")
parts = var_nm.split(".", 1)
root_key = parts[0]
rest = parts[1] if len(parts) > 1 else ""
if not rest:
cpn["obj"].set_output(root_key, value)
return
root_val = cpn["obj"].output(root_key)
if not root_val:
root_val = {}
cpn["obj"].set_output(root_key, self.set_variable_param_value(root_val, rest, value))
def set_variable_param_value(self, obj: Any, path: str, value) -> Any:
cur = obj
keys = path.split(".")
if not path:
return value
for key in keys[:-1]:
if key not in cur or not isinstance(cur[key], dict):
cur[key] = {}
cur = cur[key]
cur[keys[-1]] = value
return obj
def is_canceled(self) -> bool:
return has_canceled(self.task_id)
def cancel_task(self) -> bool:
try:
REDIS_CONN.set(f"{self.task_id}-cancel", "x")
except Exception as e:
logging.exception(e)
return False
return True
class Canvas(Graph):
def __init__(self, dsl: str, tenant_id=None, task_id=None, canvas_id=None, custom_header=None):
self.globals = {
"sys.query": "",
"sys.user_id": tenant_id,
"sys.conversation_turns": 0,
"sys.files": [],
"sys.history": [],
"sys.date": datetime.datetime.now(datetime.timezone.utc).strftime("%Y-%m-%d %H:%M:%S"),
}
self.variables = {}
# Aggregated provider token usage (prompt/completion/total) across every LLM
# call in a single run — query rewriting, cross-language translation, tool
# reasoning and the final answer. Populated via the token_usage_sink context
# variable that each LLMBundle chat call writes to. Reset at run() start.
self._run_token_usage: dict = {"prompt_tokens": 0, "completion_tokens": 0, "total_tokens": 0, "calls": 0}
super().__init__(dsl, tenant_id, task_id, custom_header=custom_header)
self._id = canvas_id
def load(self):
super().load()
self.history = self.dsl["history"]
if "globals" in self.dsl:
self.globals = self.dsl["globals"]
if "sys.history" not in self.globals:
self.globals["sys.history"] = []
if "sys.date" not in self.globals:
self.globals["sys.date"] = datetime.datetime.now(datetime.timezone.utc).strftime("%Y-%m-%d %H:%M:%S")
else:
self.globals = {
"sys.query": "",
"sys.user_id": "",
"sys.conversation_turns": 0,
"sys.files": [],
"sys.history": [],
"sys.date": datetime.datetime.now(datetime.timezone.utc).strftime("%Y-%m-%d %H:%M:%S"),
}
if "variables" in self.dsl:
self.variables = self.dsl["variables"]
else:
self.variables = {}
self.retrieval = self.dsl["retrieval"]
self.memory = self.dsl.get("memory", [])
def __str__(self):
self.dsl["history"] = self.history
self.dsl["retrieval"] = self.retrieval
self.dsl["memory"] = self.memory
return super().__str__()
def clear_history(self):
self.history = []
if isinstance(self.globals.get("sys.history"), list):
self.globals["sys.history"] = []
def reset(self, mem=False):
super().reset()
if not mem:
self.history = []
self.retrieval = []
self.memory = []
print(self.variables)
for k in self.globals.keys():
if k.startswith("sys."):
if isinstance(self.globals[k], str):
self.globals[k] = ""
elif isinstance(self.globals[k], int):
self.globals[k] = 0
elif isinstance(self.globals[k], float):
self.globals[k] = 0
elif isinstance(self.globals[k], list):
self.globals[k] = []
elif isinstance(self.globals[k], dict):
self.globals[k] = {}
else:
self.globals[k] = None
if k.startswith("env."):
key = k[4:]
if key in self.variables:
variable = self.variables[key]
value = variable.get("value")
if value is not None:
self.globals[k] = value
else:
var_type = variable.get("type", "")
if var_type == "number":
self.globals[k] = 0
elif var_type == "boolean":
self.globals[k] = False
elif var_type == "object":
self.globals[k] = {}
elif var_type.startswith("array"):
self.globals[k] = []
else: # "string" or unknown
self.globals[k] = ""
else:
self.globals[k] = ""
async def run(self, **kwargs):
# Install a fresh per-run token usage sink and Langfuse correlation context,
# and guarantee both are torn down when the run ends (even on early return or
# exception) so later LLM calls in the same task never inherit a previous
# run's sink or session/user attributes.
self._run_token_usage = {"prompt_tokens": 0, "completion_tokens": 0, "total_tokens": 0, "calls": 0}
_lf_attrs = {}
_user_id = kwargs.get("user_id")
if _user_id:
_lf_attrs["user_id"] = str(_user_id)[:200]
_session_id = kwargs.get("session_id") or self._id
if _session_id:
_lf_attrs["session_id"] = str(_session_id)[:200]
sink_token = token_usage_sink.set(self._run_token_usage)
attrs_token = langfuse_run_attrs.set(_lf_attrs)
try:
async for ev in self._run_impl(**kwargs):
yield ev
finally:
# reset() can raise if the generator is closed from a different context
# (e.g. client disconnect); fall back to clearing the values in that case.
try:
token_usage_sink.reset(sink_token)
except ValueError:
logging.debug("Failed to reset token usage ContextVar", exc_info=True)
token_usage_sink.set(None)
try:
langfuse_run_attrs.reset(attrs_token)
except ValueError:
logging.debug("Failed to reset Langfuse run attributes ContextVar", exc_info=True)
langfuse_run_attrs.set(None)
async def _run_impl(self, **kwargs):
self.globals["sys.date"] = datetime.datetime.now(datetime.timezone.utc).strftime("%Y-%m-%d %H:%M:%S")
st = time.perf_counter()
self._loop = asyncio.get_running_loop()
self.message_id = get_uuid()
created_at = int(time.time())
self.add_user_input(kwargs.get("query"))
path_set = set(self.path)
for k, cpn in self.components.items():
if k in path_set:
self.components[k]["obj"].reset(True)
if kwargs.get("webhook_payload"):
for k, cpn in self.components.items():
if self.components[k]["obj"].component_name.lower() == "begin" and self.components[k]["obj"]._param.mode == "Webhook":
payload = kwargs.get("webhook_payload", {})
if "input" in payload:
self.components[k]["obj"].set_input_value("request", payload["input"])
for kk, vv in payload.items():
if kk == "input":
continue
self.components[k]["obj"].set_output(kk, vv)
layout_recognize = None
for cpn in self.components.values():
if cpn["obj"].component_name.lower() == "begin":
layout_recognize = getattr(cpn["obj"]._param, "layout_recognize", None)
break
for k in kwargs.keys():
if k in ["query", "user_id", "files", "chat_template_kwargs"] and kwargs[k]:
if k == "files":
self.globals[f"sys.{k}"] = await self.get_files_async(kwargs[k], layout_recognize)
else:
self.globals[f"sys.{k}"] = kwargs[k]
if not self.globals["sys.conversation_turns"]:
self.globals["sys.conversation_turns"] = 0
self.globals["sys.conversation_turns"] += 1
is_resume = bool(self.path) and self.path[0].lower().find("userfillup") >= 0
def decorate(event, dt):
nonlocal created_at
return {
"event": event,
# "conversation_id": "f3cc152b-24b0-4258-a1a1-7d5e9fc8a115",
"message_id": self.message_id,
"created_at": created_at,
"task_id": self.task_id,
"data": dt,
}
if not is_resume:
self.path.append("begin")
self.retrieval.append({"chunks": [], "doc_aggs": []})
if self.is_canceled():
msg = f"Task {self.task_id} has been canceled before starting."
logging.info(msg)
raise TaskCanceledException(msg)
if not is_resume:
yield decorate("workflow_started", {"inputs": kwargs.get("inputs")})
_logger.debug(
"[Canvas] Workflow started. Path: %s, Inputs: %s",
[self.get_component_name(c) for c in self.path],
json.dumps(kwargs.get("inputs", {}), ensure_ascii=False, default=str)[:500],
)
self.retrieval.append({"chunks": {}, "doc_aggs": {}})
async def _run_batch(f, t):
if self.is_canceled():
msg = f"Task {self.task_id} has been canceled during batch execution."
logging.info(msg)
raise TaskCanceledException(msg)
loop = asyncio.get_running_loop()
tasks = []
max_concurrency = getattr(self._thread_pool, "_max_workers", 5)
sem = asyncio.Semaphore(max_concurrency)
async def _invoke_one(cpn_obj, sync_fn, call_kwargs, use_async: bool):
async with sem:
if use_async:
await cpn_obj.invoke_async(**(call_kwargs or {}))
return
# run_in_executor does not propagate context variables; copy the
# current context so the token usage sink / Langfuse attributes set
# by run() remain visible to LLMBundle calls inside sync components.
ctx = contextvars.copy_context()
await loop.run_in_executor(self._thread_pool, lambda: ctx.run(partial(sync_fn, **(call_kwargs or {}))))
i = f
while i < t:
cpn = self.get_component_obj(self.path[i])
task_fn = None
call_kwargs = None
if cpn.component_name.lower() in ["begin", "userfillup"]:
call_kwargs = {"inputs": kwargs.get("inputs", {})}
task_fn = cpn.invoke
i += 1
else:
for _, ele in cpn.get_input_elements().items():
if isinstance(ele, dict) and ele.get("_cpn_id") and ele.get("_cpn_id") not in self.path[:i] and self.path[0].lower().find("userfillup") < 0:
self.path.pop(i)
t -= 1
break
else:
call_kwargs = cpn.get_input()
task_fn = cpn.invoke
i += 1
if task_fn is None:
continue
_logger.debug(
"[Canvas] Invoking component '%s' (%s) with inputs: %s",
self.get_component_name(self.path[i - 1]),
cpn.component_name,
json.dumps(call_kwargs, ensure_ascii=False, default=str)[:500],
)
fn_invoke_async = getattr(cpn, "_invoke_async", None)
use_async = (fn_invoke_async and asyncio.iscoroutinefunction(fn_invoke_async)) or asyncio.iscoroutinefunction(getattr(cpn, "_invoke", None))
tasks.append(asyncio.create_task(_invoke_one(cpn, task_fn, call_kwargs, use_async)))
if tasks:
await asyncio.gather(*tasks)
def _node_finished(cpn_obj):
outputs = cpn_obj.output()
_logger.debug(
"[Canvas] Component '%s' (%s) finished. Outputs: %s, Error: %s",
self.get_component_name(cpn_obj._id),
self.get_component_type(cpn_obj._id),
json.dumps(outputs, ensure_ascii=False, default=str)[:500],
cpn_obj.error(),
)
return decorate(
"node_finished",
{
"inputs": cpn_obj.get_input_values(),
"outputs": outputs,
"component_id": cpn_obj._id,
"component_name": self.get_component_name(cpn_obj._id),
"component_type": self.get_component_type(cpn_obj._id),
"error": cpn_obj.error(),
"elapsed_time": time.perf_counter() - cpn_obj.output("_created_time"),
"created_at": cpn_obj.output("_created_time"),
},
)
self.error = ""
idx = 0 if is_resume else len(self.path) - 1
partials = []
tts_mdl = None
while idx < len(self.path):
to = len(self.path)
for i in range(idx, to):
yield decorate(
"node_started",
{
"inputs": None,
"created_at": int(time.time()),
"component_id": self.path[i],
"component_name": self.get_component_name(self.path[i]),
"component_type": self.get_component_type(self.path[i]),
"thoughts": self.get_component_thoughts(self.path[i]),
},
)
await _run_batch(idx, to)
to = len(self.path)
# post-processing of components invocation
for i in range(idx, to):
cpn = self.get_component(self.path[i])
cpn_obj = self.get_component_obj(self.path[i])
if cpn_obj.component_name.lower() == "message":
if cpn_obj.get_param("auto_play"):
tts_model_config = get_tenant_default_model_by_type(self._tenant_id, LLMType.TTS)
tts_mdl = LLMBundle(self._tenant_id, tts_model_config)
if isinstance(cpn_obj.output("content"), partial):
_m = ""
buff_m = ""
stream = cpn_obj.output("content")()
async def _process_stream(m):
nonlocal buff_m, _m, tts_mdl
if not m:
return
if m == "<think>":
return decorate("message", {"content": "", "start_to_think": True})
elif m == "</think>":
return decorate("message", {"content": "", "end_to_think": True})
buff_m += m
_m += m
if len(buff_m) > 16:
ev = decorate("message", {"content": m, "audio_binary": self.tts(tts_mdl, buff_m)})
buff_m = ""
return ev
return decorate("message", {"content": m})
if inspect.isasyncgen(stream):
async for m in stream:
ev = await _process_stream(m)
if ev:
yield ev
else:
for m in stream:
ev = await _process_stream(m)
if ev:
yield ev
if buff_m:
yield decorate("message", {"content": "", "audio_binary": self.tts(tts_mdl, buff_m)})
buff_m = ""
cpn_obj.set_output("content", _m)
else:
yield decorate("message", {"content": cpn_obj.output("content")})
message_end = self._build_message_end(cpn_obj)
yield decorate("message_end", message_end)
while partials:
_cpn_obj = self.get_component_obj(partials[0])
if isinstance(_cpn_obj.output("content"), partial):
break
yield _node_finished(_cpn_obj)
partials.pop(0)
other_branch = False
if cpn_obj.error():
ex = cpn_obj.exception_handler()
if ex and ex["goto"]:
self.path.extend(ex["goto"])
other_branch = True
elif ex and ex["default_value"]:
yield decorate("message", {"content": ex["default_value"]})
yield decorate("message_end", {})
else:
self.error = cpn_obj.error()
if cpn_obj.component_name.lower() not in ("iteration", "loop"):
if isinstance(cpn_obj.output("content"), partial):
if self.error:
cpn_obj.set_output("content", None)
yield _node_finished(cpn_obj)
else:
partials.append(self.path[i])
else:
yield _node_finished(cpn_obj)
def _append_path(cpn_id):
nonlocal other_branch
if other_branch:
return
if self.path[-1] == cpn_id:
return
self.path.append(cpn_id)
def _extend_path(cpn_ids):
nonlocal other_branch
if other_branch:
return
for cpn_id in cpn_ids:
_append_path(cpn_id)
if cpn_obj.component_name.lower() in ("iterationitem", "loopitem") and cpn_obj.end():
iter = cpn_obj.get_parent()
yield _node_finished(iter)
_extend_path(self.get_component(cpn["parent_id"])["downstream"])
elif cpn_obj.component_name.lower() in ["categorize", "switch"]:
_extend_path(cpn_obj.output("_next"))
elif cpn_obj.component_name.lower() in ("iteration", "loop"):
_append_path(cpn_obj.get_start())
elif cpn_obj.component_name.lower() == "exitloop" and cpn_obj.get_parent().component_name.lower() == "loop":
_extend_path(self.get_component(cpn["parent_id"])["downstream"])
elif not cpn["downstream"] and cpn_obj.get_parent():
_append_path(cpn_obj.get_parent().get_start())
else:
_extend_path(cpn["downstream"])
if self.error:
logging.error(f"Runtime Error: {self.error}")
break
idx = to
if any([self.components.get(c) is not None and self.get_component_obj(c).component_name.lower() == "userfillup" for c in self.path[idx:]]):
path = [c for c in self.path[idx:] if self.components.get(c) is not None and self.get_component(c)["obj"].component_name.lower() == "userfillup"]
path.extend([c for c in self.path[idx:] if self.components.get(c) is not None and self.get_component(c)["obj"].component_name.lower() != "userfillup"])
another_inputs = {}
tips = ""
for c in path:
o = self.get_component_obj(c)
if o.component_name.lower() == "userfillup":
o.invoke()
another_inputs.update({k: v for k, v in o.get_input_elements().items() if not self._is_input_field_satisfied(v)})
if o.get_param("enable_tips"):
tips = o.output("tips")
if not another_inputs:
continue
self.path = path
yield decorate("user_inputs", {"inputs": another_inputs, "tips": tips})
return
self.path = self.path[:idx]
if not self.error:
yield decorate(
"workflow_finished",
{
"inputs": kwargs.get("inputs"),
"outputs": self.get_component_obj(self.path[-1]).output(),
"elapsed_time": time.perf_counter() - st,
"created_at": st,
# Run-level total of all LLM calls — emitted once here.
"usage": self._run_usage_payload(),
},
)
self.history.append(("assistant", self.get_component_obj(self.path[-1]).output()))
self.globals["sys.history"].append(f"{self.history[-1][0]}: {self.history[-1][1]}")
elif "Task has been canceled" in self.error:
yield decorate(
"workflow_finished",
{
"inputs": kwargs.get("inputs"),
"outputs": "Task has been canceled",
"elapsed_time": time.perf_counter() - st,
"created_at": st,
"usage": self._run_usage_payload(),
},
)
def is_reff(self, exp: str) -> bool:
exp = exp.strip("{").strip("}")
if exp.find("@") < 0:
return exp in self.globals
arr = exp.split("@")
if len(arr) != 2:
return False
if self.get_component(arr[0]) is None:
return False
return True
def tts(self, tts_mdl, text):
def clean_tts_text(text: str) -> str:
if not text:
return ""
text = text.encode("utf-8", "ignore").decode("utf-8", "ignore")
text = re.sub(r"[\x00-\x08\x0B-\x0C\x0E-\x1F\x7F]", "", text)
emoji_pattern = re.compile(
"[\U0001f600-\U0001f64f\U0001f300-\U0001f5ff\U0001f680-\U0001f6ff\U0001f1e0-\U0001f1ff\U00002700-\U000027bf\U0001f900-\U0001f9ff\U0001fa70-\U0001faff\U0001fad0-\U0001faff]+",
flags=re.UNICODE,
)
text = emoji_pattern.sub("", text)
text = re.sub(r"\s+", " ", text).strip()
MAX_LEN = 500
if len(text) > MAX_LEN:
text = text[:MAX_LEN]
return text
if not tts_mdl or not text:
return None
text = clean_tts_text(text)
if not text:
return None
return synthesize_with_cache(tts_mdl, text)
def get_history(self, window_size):
convs = []
if window_size <= 0:
return convs
for role, obj in self.history[window_size * -2 :]:
if isinstance(obj, dict):
convs.append({"role": role, "content": obj.get("content", "")})
else:
convs.append({"role": role, "content": str(obj)})
return convs
def add_user_input(self, question):
self.history.append(("user", question))
rendered = json.dumps(question, ensure_ascii=False) if isinstance(question, dict) else question
self.globals["sys.history"].append(f"{self.history[-1][0]}: {rendered}")
@staticmethod
def _is_input_field_satisfied(field: Any) -> bool:
if not isinstance(field, dict):
return field is not None
value = field.get("value")
field_type = str(field.get("type", "")).lower()
if field_type.find("file") >= 0:
if field.get("optional") and value is None:
return True
return value not in (None, [], "")
if value is None:
return False
return True
def get_prologue(self):
return self.components["begin"]["obj"]._param.prologue
def get_mode(self):
return self.components["begin"]["obj"]._param.mode
def get_sys_query(self):
return self.globals.get("sys.query", "")
def set_global_param(self, **kwargs):
self.globals.update(kwargs)
def get_preset_param(self):
return self.components["begin"]["obj"]._param.inputs
def get_component_input_elements(self, cpnnm):
return self.components[cpnnm]["obj"].get_input_elements()
async def get_files_async(self, files: Union[None, list[dict]], layout_recognize: str = None) -> list[str]:
if not files:
return []
def image_to_base64(file):
return "data:{};base64,{}".format(file["mime_type"], base64.b64encode(FileService.get_blob(file["created_by"], file["id"])).decode("utf-8"))
def parse_file(file):
blob = FileService.get_blob(file["created_by"], file["id"])
return FileService.parse(file["name"], blob, True, file["created_by"], layout_recognize)
loop = asyncio.get_running_loop()
tasks = []
for file in files:
if file["mime_type"].find("image") >= 0:
tasks.append(loop.run_in_executor(self._thread_pool, image_to_base64, file))
continue
tasks.append(loop.run_in_executor(self._thread_pool, parse_file, file))
return await asyncio.gather(*tasks)
def get_files(self, files: Union[None, list[dict]], layout_recognize: str = None) -> list[str]:
"""
Synchronous wrapper for get_files_async, used by sync component invoke paths.
"""
loop = getattr(self, "_loop", None)
if loop and loop.is_running():
return asyncio.run_coroutine_threadsafe(self.get_files_async(files, layout_recognize), loop).result()
return asyncio.run(self.get_files_async(files, layout_recognize))
def tool_use_callback(self, agent_id: str, func_name: str, params: dict, result: Any, elapsed_time=None):
agent_ids = agent_id.split("-->")
agent_name = self.get_component_name(agent_ids[0])
path = agent_name if len(agent_ids) < 2 else agent_name + "-->" + "-->".join(agent_ids[1:])
try:
bin = REDIS_CONN.get(f"{self.task_id}-{self.message_id}-logs")
if bin:
obj = json.loads(bin.encode("utf-8"))
if obj[-1]["component_id"] == agent_ids[0]:
obj[-1]["trace"].append({"path": path, "tool_name": func_name, "arguments": params, "result": result, "elapsed_time": elapsed_time})
else:
obj.append({"component_id": agent_ids[0], "trace": [{"path": path, "tool_name": func_name, "arguments": params, "result": result, "elapsed_time": elapsed_time}]})
else:
obj = [{"component_id": agent_ids[0], "trace": [{"path": path, "tool_name": func_name, "arguments": params, "result": result, "elapsed_time": elapsed_time}]}]
REDIS_CONN.set_obj(f"{self.task_id}-{self.message_id}-logs", obj, 60 * 10)
except Exception as e:
logging.exception(e)
def add_reference(self, chunks: list[object], doc_infos: list[object]):
if not self.retrieval:
self.retrieval = [{"chunks": {}, "doc_aggs": {}}]
r = self.retrieval[-1]
for ck in chunks_format({"chunks": chunks}):
cid = hash_str2int(ck["id"], 500)
# cid = uuid.uuid5(uuid.NAMESPACE_DNS, ck["id"])
if cid not in r:
r["chunks"][cid] = ck
for doc in doc_infos:
if doc["doc_name"] not in r:
r["doc_aggs"][doc["doc_name"]] = doc
def get_reference(self):
if not self.retrieval:
return {"chunks": {}, "doc_aggs": {}}
return self.retrieval[-1]
def _has_reference(self) -> bool:
ref = self.get_reference()
if not isinstance(ref, dict):
return False
return bool(ref.get("chunks") or ref.get("doc_aggs"))
def _build_message_end(self, cpn_obj) -> dict:
message_end = {}
if cpn_obj.get_param("status"):
message_end["status"] = cpn_obj.get_param("status")
if isinstance(cpn_obj.output("attachment"), dict):
message_end["attachment"] = cpn_obj.output("attachment")
if self._has_reference():
message_end["reference"] = self.get_reference()
# NOTE: aggregated run token usage is intentionally NOT attached here.
# _build_message_end runs once per Message component, so a multi-Message graph
# would emit cumulative usage repeatedly and double count. The run total is
# emitted exactly once on the terminal workflow_finished event instead.
return message_end
def _run_usage_payload(self) -> dict:
usage = getattr(self, "_run_token_usage", None) or {}
return {
"prompt_tokens": usage.get("prompt_tokens", 0),
"completion_tokens": usage.get("completion_tokens", 0),
"total_tokens": usage.get("total_tokens", 0),
"calls": usage.get("calls", 0),
}
def add_memory(self, user: str, assist: str, summ: str):
self.memory.append((user, assist, summ))
def get_memory(self) -> list[Tuple]:
return self.memory
def get_component_thoughts(self, cpn_id) -> str:
return self.components.get(cpn_id)["obj"].thoughts()