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CloudStorage

The CloudStorage class provides the core functionality of the library. File operations loosely follow the conventions of Node's fs.

The class can both be used as a static class and be instantiated. This means you can use both CloudStorage.readFile() and cloudStorageInstance.readFile(). The former will use a default cloud storage provider based on the platform, while the latter will use a provider of your choice. Learn more. All file system operations are available on both the static class and instances, while the available configuration methods differ between the two (see below).

import { CloudStorage } from 'react-native-cloud-storage';

Definitions​

path​

When a method takes a path parameter, you should provide a full path with a leading slash, but no trailing slashes:

  • ❌ some/file.txt
  • ❌ file:///some/file.txt
  • ❌ /some/directory/
  • ✅ /some/file.txt
  • ✅ /some/directory
caution

When creating files or directories, always make sure that all parent directories in the tree already exist. Otherwise the library will throw a CloudStorageErrorCode.DIRECTORY_NOT_FOUND.

Constructor​

new CloudStorage(provider, options)​

Creates a new CloudStorage instance using the given provider.

Parameters:

  • provider (CloudStorageProvider): Optional. The provider to use. Defaults to the default provider of the current platform.
  • options (object): Optional. The options to set for the provider. See here for a list of available options per provider.

Configuration methods​

getDefaultInstance()​

  • Available on static class: ✅ Yes
  • Available on instances: ❌ No

Gets the internal default instance of CloudStorage.

Returns: The default CloudStorage instance.

getDefaultProvider()​

  • Available on static class: ✅ Yes
  • Available on instances: ❌ No

Gets the default cloud storage provider for the current platform.

Returns: The default CloudStorageProvider for the current platform (e.g. CloudStorageProvider.ICloud on iOS and CloudStorageProvider.GoogleDrive on all other platforms).

getProvider()​

  • Available on static class: ❌ No (the static default instance will use the default provider of the current platform)
  • Available on instances: ✅ Yes

Gets the cloud storage provider currently in use.

Returns: The currently used CloudStorageProvider.

getProviderOptions()​

  • Available on static class: ✅ Yes
  • Available on instances: ✅ Yes

Gets the currently set options of the current provider.

Returns: The options of the given provider.

getSupportedProviders()​

  • Available on static class: ✅ Yes
  • Available on instances: ❌ No

Gets the list of supported cloud storage providers on the current platform.

Returns: An array of CloudStorageProvider values.

setProvider(provider)​

  • Available on static class: ❌ No (the static default instance will use the default provider of the current platform)
  • Available on instances: ✅ Yes

Sets the cloud storage provider to use.

tip

Use Platform.select to set the provider based on the platform:

import { Platform } from 'react-native';
import { CloudStorage, CloudStorageProvider } from 'react-native-cloud-storage';

CloudStorage.setProvider(
  Platform.select({
    ios: CloudStorageProvider.ICloud,
    default: CloudStorageProvider.GoogleDrive,
  })
);

Parameters:

Returns: void.

setProviderOptions(options)​

  • Available on static class: ✅ Yes
  • Available on instances: ✅ Yes

Sets the options of the current provider. For a list of available options per provider, see here.

Parameters:

  • options (object): Required. The options to set. See here for a list of available options per provider.

Returns: void.

File system operations​

All file system operations are available on both the static class and instances. When using the static class, the operation will be performed using the default provider (or the provider set via setProvider()).

appendFile(path, data, scope)​

Appends the data to the file at the given path. Creates the file if it doesn't exist yet.

Parameters:

  • path (string): Required. The path including the filename to append data to.
  • content (string): Required. The content to append.
  • scope (CloudStorageScope): Optional. The storage scope (documents/app data) to use. Defaults to CloudStorageScope.AppData, unless the default scope has been changed via setProviderOptions().

Returns: A Promise that resolves to void once the data has been appended.

downloadFile(path, scope)​

When a file has been uploaded to iCloud, it is not immediately synced across devices. In this case, those files will have an .icloud extension, so trying to read them will fail. This method will download the file from iCloud so you can safely process it afterwards. If it has already been downloaded, this will not do anything and immediately return. Does not have any effect on Google Drive.

Parameters:

Returns: A Promise that resolves to void once the download has been triggered.

exists(path, scope)​

Tests whether or not the file or directory at the given path exists.

Parameters:

Returns: A Promise that resolves to a boolean. true if a file or directory exists at the given path, false otherwise.

isCloudAvailable()​

Tests whether or not the cloud storage is available. When using iCloud, this actually verifies with the system whether or not iCloud is available. This might not be the case right at app launch or when the user is not logged into iCloud. For Google Drive, this simply checks whether or not an access token has been set within the provider options.

Returns: A Promise that resolves to a boolean. true if the cloud storage is available, false otherwise.

mkdir(path, scope)​

Creates a new directory at the given path.

Parameters:

Returns: A Promise that resolves once the directory has been created.

readdir(path, scope)​

Reads the files and directories contained in the directory at the given path. Does not include . and .. entries.

Parameters:

Returns: A Promise that resolves to an array of strings containing the names of the files and directories in the given directory.

readFile(path, scope)​

Reads the file at the given path into a string.

Parameters:

Returns: A Promise that resolves to a string containing the file's content.

rmdir(path, options, scope)​

Deletes the directory at the given path. Can optionally delete the directory including all its contents (recursively).

Parameters:

  • path (string): Required. The full pathname of the directory to delete.
  • options ({ recursive?: boolean }): Optional. An object containing the recursive property which, if set to true, will delete the directory including all its contents (recursively). If set to false (or omitted), the library will throw a CloudStorageErrorCode.DIRECTORY_NOT_EMPTY if the directory is not empty. Defaults to { recursive: false }.
  • scope (CloudStorageScope): Optional. The storage scope (documents/app data) to use. Defaults to CloudStorageScope.AppData, unless the default scope has been changed via setProviderOptions().

Returns: A Promise that resolves once the directory has been deleted.

stat(path, scope)​

Gets several file statistics of the file at the given path.

Parameters:

Returns: A Promise that resolves to CloudStorageFileStat object containing the statistics.

unlink(path, scope)​

Deletes the file at the given path.

Parameters:

Returns: A Promise that resolves to void once the file has been deleted.

writeFile(path, data, scope)​

Writes the data to the given path. Creates the file if it doesn't exist yet and overwrites it otherwise.

Parameters:

Returns: A Promise that resolves to void once the file has been written.