Struct Extension 

pub struct Extension { /* private fields */ }

An Extension associates a file extension (e.g. .py) to a set of shared libraries.

This details how a Zenoh-Flow runtime should load nodes that have the url of their implementation with this extension.

Zenoh-Flow only supports node implementation in the form of shared libraries. To support additional implementation — for instance Python scripts — a Zenoh-Flow runtime needs to be informed on (i) which shared libraries it should load and (ii) how it should make these shared libraries “load” the node implementation.

To support an extension on a Zenoh-Flow runtime, one can either detail them in the configuration file of the runtime or through the dedicated method.

Example configuration

(Yaml)

file_extension: py
libraries:
  source: /home/zenoh-flow/libpy_source.so
  operator: /home/zenoh-flow/libpy_operator.so
  sink: /home/zenoh-flow/libpy_sink.so

Implementations

impl Extension

pub fn file_extension(&self) -> &str

Returns the file extension associated with this extension.

Example

assert_eq!(extension.file_extension(), "py");

pub fn source(&self) -> &PathBuf

Returns the path of the shared library responsible for loading Source nodes for this file extension.

Example

assert_eq!(extension.source().to_str(), Some("/home/zenoh-flow/libpy_source.so"));

pub fn operator(&self) -> &PathBuf

Returns the path of the shared library responsible for loading Operator nodes for this file extension.

Example

assert_eq!(extension.operator().to_str(), Some("/home/zenoh-flow/libpy_operator.so"));

pub fn sink(&self) -> &PathBuf

Returns the path of the shared library responsible for loading Sink nodes for this file extension.

Example

assert_eq!(extension.sink().to_str(), Some("/home/zenoh-flow/libpy_sink.so"));

Trait Implementations

impl Clone for Extension

fn clone(&self) -> Extension

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Extension

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Extension

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Hash for Extension

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for Extension

fn eq(&self, other: &Extension) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for Extension

impl StructuralPartialEq for Extension