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slack_app.py
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slack_app.py
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import json
import logging
import re
import time
from slack_bolt import App
from slack_bolt.adapter.aws_lambda import SlackRequestHandler
N_RETRIES = 180
# process_before_response must be True when running on FaaS
app = App(process_before_response=True)
def to_slack_mrkdown(text: str):
regex_patterns = (
# replace hyphenated lists with bullet points
(re.compile("^- ", flags=re.M), "• "),
(re.compile("^ - ", flags=re.M), " ◦ "),
(re.compile("^ - ", flags=re.M), " ⬩ "), # ◆
(re.compile("^ - ", flags=re.M), " ◽ "),
# replace headers with bold
(re.compile("^#+ (.+)$", flags=re.M), r"*\1*"),
(re.compile("\*\*"), "*"),
(re.compile("\*\*"), "*"),
# remove code block language
(re.compile("```[a-z]+"), "```"),
)
for regex, replacement in regex_patterns:
text = regex.sub(replacement, text)
return text
def ack_answer_question(body, ack, say):
ack()
event = body["event"]
thread_ts = event.get("thread_ts", None) or event["ts"]
if event.get("text") is None:
say("Please ask a question.", thread_ts=thread_ts)
else:
say("Processing your question, one moment...", thread_ts=thread_ts)
def ack_get_feedback(ack):
ack()
def answer_question(body, say):
from unionai.remote import UnionRemote
event = body["event"]
text = re.sub("<@.+>", "", event["text"]).strip()
remote = UnionRemote()
workflow = remote.fetch_workflow(name="union_rag.simple_rag.ask_with_feedback")
execution = remote.execute(workflow, inputs={"question": text})
execution = remote.sync(execution, sync_nodes=True)
url = remote.generate_console_url(execution)
print(f"Execution on Union Serverless: {url}")
answer = None
for _ in range(N_RETRIES):
if (
"n0" in execution.node_executions
and execution.node_executions["n0"].is_done
):
answer = execution.node_executions["n0"].outputs["o0"]
break
execution = remote.sync(execution, sync_nodes=True)
time.sleep(1)
if answer is None:
raise RuntimeError("Failed to get answer")
answer = to_slack_mrkdown(answer)
response = answer.replace("@flyte-attendant", "")
thread_ts = event.get("thread_ts", None) or event["ts"]
say(
text=response,
blocks=[
{
"type": "section",
"text": {
"type": "mrkdwn",
"text": response,
},
},
{
"type": "section",
"text": {
"type": "mrkdwn",
"text": "Was this answer helpful?",
},
},
{
"type": "actions",
"elements": [
{
"type": "button",
"text": {"type": "plain_text", "emoji": True, "text": "👍"},
"value": f"thumbs_up:{execution.id.name}",
"action_id": "feedback_thumbs_up",
},
{
"type": "button",
"text": {"type": "plain_text", "emoji": True, "text": "👎"},
"value": f"thumbs_down:{execution.id.name}",
"action_id": "feedback_thumbs_down",
},
],
},
],
thread_ts=thread_ts,
unfurl_links=False,
unfurl_media=False,
)
def get_feedback(body, respond, ack):
ack()
from unionai.remote import UnionRemote
remote = UnionRemote()
action = body["actions"][0]
label, execution_id = action["value"].split(":")
execution = remote.fetch_execution(name=execution_id)
execution = remote.sync(execution)
if execution.is_done:
print("feedback already set")
return
print("feedback_body", json.dumps(body, indent=4))
text = body["message"]["text"]
# update blocks so that the clicked button appears to be selected
blocks = body["message"]["blocks"]
for block in blocks:
if block["type"] == "actions":
for element in block["elements"]:
if element["action_id"] == action["action_id"]:
element["style"] = "primary"
elif "style" in element:
element.pop("style")
remote.set_signal("get-feedback", execution_id, label)
respond(
replace_original=True,
text=text,
blocks=blocks,
)
app.event("app_mention")(
ack=ack_answer_question,
lazy=[answer_question],
)
app.action(re.compile("^feedback_thumbs_.+$"))(
ack=ack_get_feedback,
lazy=[get_feedback],
)
SlackRequestHandler.clear_all_log_handlers()
logging.basicConfig(format="%(asctime)s %(message)s", level=logging.DEBUG)
def handler(event, context):
slack_handler = SlackRequestHandler(app=app)
return slack_handler.handle(event, context)