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218 | class SlackReader(BasePydanticReader):
"""Slack reader.
Reads conversations from channels. If an earliest_date is provided, an
optional latest_date can also be provided. If no latest_date is provided,
we assume the latest date is the current timestamp.
Args:
slack_token (Optional[str]): Slack token. If not provided, we
assume the environment variable `SLACK_BOT_TOKEN` is set.
ssl (Optional[str]): Custom SSL context. If not provided, it is assumed
there is already an SSL context available.
earliest_date (Optional[datetime]): Earliest date from which
to read conversations. If not provided, we read all messages.
latest_date (Optional[datetime]): Latest date from which to
read conversations. If not provided, defaults to current timestamp
in combination with earliest_date.
"""
is_remote: bool = True
slack_token: str
earliest_date_timestamp: Optional[float]
latest_date_timestamp: float
_client: Any = PrivateAttr()
def __init__(
self,
slack_token: Optional[str] = None,
ssl: Optional[SSLContext] = None,
earliest_date: Optional[datetime] = None,
latest_date: Optional[datetime] = None,
earliest_date_timestamp: Optional[float] = None,
latest_date_timestamp: Optional[float] = None,
) -> None:
"""Initialize with parameters."""
from slack_sdk import WebClient
if slack_token is None:
slack_token = os.environ["SLACK_BOT_TOKEN"]
if slack_token is None:
raise ValueError(
"Must specify `slack_token` or set environment "
"variable `SLACK_BOT_TOKEN`."
)
if ssl is None:
self._client = WebClient(token=slack_token)
else:
self._client = WebClient(token=slack_token, ssl=ssl)
if latest_date is not None and earliest_date is None:
raise ValueError(
"Must specify `earliest_date` if `latest_date` is specified."
)
if earliest_date is not None:
earliest_date_timestamp = earliest_date.timestamp()
else:
earliest_date_timestamp = None or earliest_date_timestamp
if latest_date is not None:
latest_date_timestamp = latest_date.timestamp()
else:
latest_date_timestamp = datetime.now().timestamp() or latest_date_timestamp
res = self._client.api_test()
if not res["ok"]:
raise ValueError(f"Error initializing Slack API: {res['error']}")
super().__init__(
slack_token=slack_token,
earliest_date_timestamp=earliest_date_timestamp,
latest_date_timestamp=latest_date_timestamp,
)
@classmethod
def class_name(cls) -> str:
return "SlackReader"
def _read_message(self, channel_id: str, message_ts: str) -> str:
from slack_sdk.errors import SlackApiError
"""Read a message."""
messages_text: List[str] = []
next_cursor = None
while True:
try:
# https://slack.com/api/conversations.replies
# List all replies to a message, including the message itself.
if self.earliest_date_timestamp is None:
result = self._client.conversations_replies(
channel=channel_id, ts=message_ts, cursor=next_cursor
)
else:
conversations_replies_kwargs = {
"channel": channel_id,
"ts": message_ts,
"cursor": next_cursor,
"latest": str(self.latest_date_timestamp),
}
if self.earliest_date_timestamp is not None:
conversations_replies_kwargs["oldest"] = str(
self.earliest_date_timestamp
)
result = self._client.conversations_replies(
**conversations_replies_kwargs # type: ignore
)
messages = result["messages"]
messages_text.extend(message["text"] for message in messages)
if not result["has_more"]:
break
next_cursor = result["response_metadata"]["next_cursor"]
except SlackApiError as e:
if e.response["error"] == "ratelimited":
logger.error(
"Rate limit error reached, sleeping for: {} seconds".format(
e.response.headers["retry-after"]
)
)
time.sleep(int(e.response.headers["retry-after"]))
else:
logger.error(f"Error parsing conversation replies: {e}")
break
return "\n\n".join(messages_text)
def _read_channel(self, channel_id: str, reverse_chronological: bool) -> str:
from slack_sdk.errors import SlackApiError
"""Read a channel."""
result_messages: List[str] = []
next_cursor = None
while True:
try:
# Call the conversations.history method using the WebClient
# conversations.history returns the first 100 messages by default
# These results are paginated,
# see: https://api.slack.com/methods/conversations.history$pagination
conversations_history_kwargs = {
"channel": channel_id,
"cursor": next_cursor,
"latest": str(self.latest_date_timestamp),
}
if self.earliest_date_timestamp is not None:
conversations_history_kwargs["oldest"] = str(
self.earliest_date_timestamp
)
result = self._client.conversations_history(
**conversations_history_kwargs # type: ignore
)
conversation_history = result["messages"]
# Print results
logger.info(
f"{len(conversation_history)} messages found in {channel_id}"
)
result_messages.extend(
self._read_message(channel_id, message["ts"])
for message in conversation_history
)
if not result["has_more"]:
break
next_cursor = result["response_metadata"]["next_cursor"]
except SlackApiError as e:
if e.response["error"] == "ratelimited":
logger.error(
"Rate limit error reached, sleeping for: {} seconds".format(
e.response.headers["retry-after"]
)
)
time.sleep(int(e.response.headers["retry-after"]))
else:
logger.error(f"Error parsing conversation replies: {e}")
return (
"\n\n".join(result_messages)
if reverse_chronological
else "\n\n".join(result_messages[::-1])
)
def load_data(
self, channel_ids: List[str], reverse_chronological: bool = True
) -> List[Document]:
"""Load data from the input directory.
Args:
channel_ids (List[str]): List of channel ids to read.
Returns:
List[Document]: List of documents.
"""
results = []
for channel_id in channel_ids:
channel_content = self._read_channel(
channel_id, reverse_chronological=reverse_chronological
)
results.append(
Document(
id_=channel_id,
text=channel_content,
metadata={"channel": channel_id},
)
)
return results
|