firebase_functions.storage_fn module

Functions to handle events from Google Cloud Storage.

Classes

CustomerEncryption class firebase_functions.storage_fn.CustomerEncryption(encryption_algorithm: str, key_sha256: str)
Bases: object Metadata of customer-supplied encryption key, if the object is encrypted by such a key. encryption_algorithm: str The encryption algorithm. key_sha256: str SHA256 hash value of the encryption key.

StorageObjectData class firebase_functions.storage_fn.StorageObjectData(bucket: str, cache_control: str | None, component_count: int | None, content_disposition: str | None, content_encoding: str | None, content_language: str | None, content_type: str | None, crc32c: str | None, customer_encryption: CustomerEncryption | None, etag: str | None, generation: int, id: str, kind: str | None, md5_hash: str | None, media_link: str | None, metadata: dict[str, str] | None, metageneration: int, name: str, self_link: str | None, size: int, storage_class: str, time_created: str | None, time_deleted: str | None, time_storage_class_updated: str | None, updated: str | None)

Bases: object An object within Google Cloud Storage. bucket: str The name of the bucket containing this object. cache_control: str | None Cache-Control directive for the object data, matching [RFC 7234 §5.2]([https://tools.ietf.org/html/rfc7234#section-5.2"]). component_count: int | None Number of underlying components that make up this object. Components are accumulated by compose operations. content_disposition: str | None Content-Disposition of the object data, matching [RFC 6266]([https://tools.ietf.org/html/rfc6266"]). content_encoding: str | None Content-Encoding of the object data, matching [RFC 7231 §3.1.2.2](https://tools.ietf.org/html/rfc7231#section-3.1.2.2) content_language: str | None Content-Language of the object data, matching [RFC 7231 §3.1.3.2](https://tools.ietf.org/html/rfc7231#section-3.1.3.2) content_type: str | None Content-Type of the object data, matching [RFC 7231 §3.1.1.5](https://tools.ietf.org/html/rfc7231#section-3.1.1.5) If an object is stored without a Content-Type, it is served as application/octet-stream. crc32c: str | None CRC32c checksum. For more information about using the CRC32c checksum, see [Hashes and ETags: Best Practices](https://cloud.google.com/storage/docs/hashes-etags#_JSONAPI). customer_encryption: CustomerEncryption | None Metadata of customer-supplied encryption key, if the object is encrypted by such a key. etag: str | None HTTP 1.1 Entity tag for the object. generation: int The content generation of this object. Used for object versioning. id: str The ID of the object, including the bucket name, object name, and generation number. kind: str | None The kind of item this is. For objects, this is always storage#object. md5_hash: str | None MD5 hash of the data; encoded using base64. media_link: str | None Media download link. metadata: dict[str, str] | None User-provided metadata, in key/value pairs. metageneration: int The version of the metadata for this object at this generation. Used for preconditions and for detecting changes in metadata. A metageneration number is only meaningful in the context of a particular generation of a particular object. name: str The name of the object. self_link: str | None The link to this object. size: int Content-Length of the data in bytes. storage_class: str Storage class of the object. time_created: str | None The creation time of the object. time_deleted: str | None The deletion time of the object. time_storage_class_updated: str | None The time at which the object's storage class was last changed. updated: str | None The modification time of the object metadata.

Functions

on_object_archived firebase_functions.storage_fn.on_object_archived(**kwargs) → Callable[[Callable[[CloudEvent[StorageObjectData]], None]], Callable[[CloudEvent[StorageObjectData]], None]]

Event handler sent only when a bucket has enabled object versioning. This event indicates that the live version of an object has become an archived version, either because it was archived or because it was overwritten by the upload of an object of the same name. Example: @on_object_archived() def example(event: CloudEvent[StorageObjectData]) -> None: pass Parameters: **kwargs (as firebase_functions.options.StorageOptions) -- Storage options. Return type: typing.Callable [ [ firebase_functions.core.CloudEvent [ firebase_functions.storage.StorageObjectData ] ], None ] A function that takes a CloudEvent and returns None.

on_object_deleted firebase_functions.storage_fn.on_object_deleted(**kwargs) → Callable[[Callable[[CloudEvent[StorageObjectData]], None]], Callable[[CloudEvent[StorageObjectData]], None]]

Event handler which fires every time a Google Cloud Storage deletion occurs. Sent when an object has been permanently deleted. This includes objects that are overwritten or are deleted as part of the bucket's lifecycle configuration. For buckets with object versioning enabled, this is not sent when an object is archived, even if archival occurs via the storage.objects.delete method. Example: @on_object_deleted() def example(event: CloudEvent[StorageObjectData]) -> None: pass Parameters: **kwargs (as firebase_functions.options.StorageOptions) -- Storage options. Return type: typing.Callable [ [ firebase_functions.core.CloudEvent [ firebase_functions.storage.StorageObjectData ] ], None ] A function that takes a CloudEvent and returns None.

on_object_finalized firebase_functions.storage_fn.on_object_finalized(**kwargs) → Callable[[Callable[[CloudEvent[StorageObjectData]], None]], Callable[[CloudEvent[StorageObjectData]], None]]

Event handler which fires every time a Google Cloud Storage object creation occurs. Sent when a new object (or a new generation of an existing object) is successfully created in the bucket. This includes copying or rewriting an existing object. A failed upload does not trigger this event. Example: @on_object_finalized() def example(event: CloudEvent[StorageObjectData]) -> None: pass Parameters: **kwargs (as firebase_functions.options.StorageOptions) -- Storage options. Return type: typing.Callable [ [ firebase_functions.core.CloudEvent [ firebase_functions.storage.StorageObjectData ] ], None ] A function that takes a CloudEvent and returns None.

on_object_metadata_updated firebase_functions.storage_fn.on_object_metadata_updated(**kwargs) → Callable[[Callable[[CloudEvent[StorageObjectData]], None]], Callable[[CloudEvent[StorageObjectData]], None]]

Event handler which fires every time the metadata of an existing object changes. Example: @on_object_metadata_updated() def example(event: CloudEvent[StorageObjectData]) -> None: pass Parameters: **kwargs (as firebase_functions.options.StorageOptions) -- Storage options. Return type: typing.Callable [ [ firebase_functions.core.CloudEvent [ firebase_functions.storage.StorageObjectData ] ], None ] A function that takes a CloudEvent and returns None.