Google Auth Library Client - Class FileSource (1.45.2)

Reference documentation and code samples for the Google Auth Library Client class FileSource.

Retrieve a token from a file.

Namespace

Google \ Auth \ CredentialSource

Parameters

Name

Description

file

string

The file to read the subject token from.

format

string|null

The format of the token in the file. Can be null or "json".

subjectTokenFieldName

string|null

The name of the field containing the token in the file. This is required when format is "json".

Parameter

Name

Description

httpHandler

?callable

Gets the unique key for caching.

The format for the cache key one of the following: Filename

Returns

Type

Description

string

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Last updated 2025-09-04 UTC.

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