load_file

Loads the contents of the file at path as a byte stream.

load_file path:string, [follow=bool, mmap=bool, timeout=duration]

Description

The file loader acquires raw bytes from a file.

path: string

The file path to load from. When ~ is the first character, it will be substituted with the value of the $HOME environment variable.

follow = bool (optional)

Do not stop when the end of file is reached, but rather to wait for additional data to be appended to the input.

mmap = bool (optional)

Use the mmap(2) system call to map the file and produce only one single chunk of bytes, instead of producing data piecemeal via read(2). This option effectively gives the downstream parser full control over reads.

timeout = duration (optional)

Wait at most for the provided duration when performing a blocking system call. This flags comes in handy in combination with follow=true to produce a steady pulse of input in the pipeline execution, as input (even if empty) drives the processing forward.

Examples

Load the raw contents of a file

load_file "example.txt"