Source code for airflow.providers.google.cloud.hooks.speech_to_text
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"""This module contains a Google Cloud Speech Hook."""
from __future__ import annotations
from collections.abc import Sequence
from typing import TYPE_CHECKING
from google.api_core.gapic_v1.method import DEFAULT, _MethodDefault
from google.cloud.speech_v1 import SpeechClient
from google.cloud.speech_v1.types import RecognitionAudio, RecognitionConfig
from airflow.providers.google.common.consts import CLIENT_INFO
from airflow.providers.google.common.hooks.base_google import GoogleBaseHook
if TYPE_CHECKING:
from google.api_core.retry import Retry
[docs]class CloudSpeechToTextHook(GoogleBaseHook):
"""
Hook for Google Cloud Speech API.
:param gcp_conn_id: The connection ID to use when fetching connection info.
:param impersonation_chain: Optional service account to impersonate using short-term
credentials, or chained list of accounts required to get the access_token
of the last account in the list, which will be impersonated in the request.
If set as a string, the account must grant the originating account
the Service Account Token Creator IAM role.
If set as a sequence, the identities from the list must grant
Service Account Token Creator IAM role to the directly preceding identity, with first
account from the list granting this role to the originating account.
"""
def __init__(
self,
gcp_conn_id: str = "google_cloud_default",
impersonation_chain: str | Sequence[str] | None = None,
**kwargs,
) -> None:
super().__init__(
gcp_conn_id=gcp_conn_id,
impersonation_chain=impersonation_chain,
**kwargs,
)
self._client: SpeechClient | None = None
[docs] def get_conn(self) -> SpeechClient:
"""
Retrieve connection to Cloud Speech.
:return: Google Cloud Speech client object.
"""
if not self._client:
self._client = SpeechClient(credentials=self.get_credentials(), client_info=CLIENT_INFO)
return self._client
@GoogleBaseHook.quota_retry()
[docs] def recognize_speech(
self,
config: dict | RecognitionConfig,
audio: dict | RecognitionAudio,
retry: Retry | _MethodDefault = DEFAULT,
timeout: float | None = None,
):
"""
Recognizes audio input.
:param config: information to the recognizer that specifies how to process the request.
https://googleapis.github.io/google-cloud-python/latest/speech/gapic/v1/types.html#google.cloud.speech_v1.types.RecognitionConfig
:param audio: audio data to be recognized
https://googleapis.github.io/google-cloud-python/latest/speech/gapic/v1/types.html#google.cloud.speech_v1.types.RecognitionAudio
:param retry: (Optional) A retry object used to retry requests. If None is specified,
requests will not be retried.
:param timeout: (Optional) The amount of time, in seconds, to wait for the request to complete.
Note that if retry is specified, the timeout applies to each individual attempt.
"""
client = self.get_conn()
if isinstance(config, dict):
config = RecognitionConfig(config)
if isinstance(audio, dict):
audio = RecognitionAudio(audio)
response = client.recognize(config=config, audio=audio, retry=retry, timeout=timeout)
self.log.info("Recognised speech: %s", response)
return response