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import base64 |
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import io |
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import json |
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from collections.abc import Generator |
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from google.cloud import storage as google_cloud_storage |
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from configs import dify_config |
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from extensions.storage.base_storage import BaseStorage |
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class GoogleCloudStorage(BaseStorage): |
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"""Implementation for Google Cloud storage.""" |
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def __init__(self): |
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super().__init__() |
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self.bucket_name = dify_config.GOOGLE_STORAGE_BUCKET_NAME |
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service_account_json_str = dify_config.GOOGLE_STORAGE_SERVICE_ACCOUNT_JSON_BASE64 |
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if service_account_json_str: |
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service_account_json = base64.b64decode(service_account_json_str).decode("utf-8") |
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service_account_obj = json.loads(service_account_json) |
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self.client = google_cloud_storage.Client.from_service_account_info(service_account_obj) |
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else: |
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self.client = google_cloud_storage.Client() |
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def save(self, filename, data): |
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bucket = self.client.get_bucket(self.bucket_name) |
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blob = bucket.blob(filename) |
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with io.BytesIO(data) as stream: |
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blob.upload_from_file(stream) |
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def load_once(self, filename: str) -> bytes: |
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bucket = self.client.get_bucket(self.bucket_name) |
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blob = bucket.get_blob(filename) |
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data = blob.download_as_bytes() |
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return data |
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def load_stream(self, filename: str) -> Generator: |
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bucket = self.client.get_bucket(self.bucket_name) |
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blob = bucket.get_blob(filename) |
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with blob.open(mode="rb") as blob_stream: |
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while chunk := blob_stream.read(4096): |
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yield chunk |
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def download(self, filename, target_filepath): |
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bucket = self.client.get_bucket(self.bucket_name) |
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blob = bucket.get_blob(filename) |
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blob.download_to_filename(target_filepath) |
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def exists(self, filename): |
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bucket = self.client.get_bucket(self.bucket_name) |
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blob = bucket.blob(filename) |
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return blob.exists() |
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def delete(self, filename): |
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bucket = self.client.get_bucket(self.bucket_name) |
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bucket.delete_blob(filename) |
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