How Does a Function Read or Write Files?
Background
A function can read files in the code directory. The working directory of a function is the upper-level directory of the handler file. To read the test.conf file in the same directory level as the handler file, use the relative path code/test.conf or an absolute path (value of the RUNTIME_CODE_ROOT environment variable). To write a file (for example, to create or download a file), go to the /tmp directory or use the file system mounting function provided by FunctionGraph.
Typical Scenarios
- Download files stored in Object Storage Service (OBS) to the /tmp directory for processing.
- To store function execution data in OBS, create a file in the /tmp directory, write the data into the file, and then upload the file to OBS.
Parent topic: General FAQs
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