pamoja.zenoh

Idiomatic Zenoh key-expression facade.

A key expression is how a Zenoh network addresses data: a slash-separated path that may carry the * and ** wildcards, so one subscriber names a whole subtree of a fleet rather than each node in it. A chunk that starts with @ is verbatim, and no wildcard selects it.

Only the naming rules cross. Running a Zenoh session needs the std-only zenoh stack, which would land in every wheel, so it stays in the Rust crate.

 1"""Idiomatic Zenoh key-expression facade.
 2
 3A key expression is how a Zenoh network addresses data: a slash-separated path
 4that may carry the ``*`` and ``**`` wildcards, so one subscriber names a whole
 5subtree of a fleet rather than each node in it. A chunk that starts with ``@``
 6is verbatim, and no wildcard selects it.
 7
 8Only the naming rules cross. Running a Zenoh session needs the std-only zenoh
 9stack, which would land in every wheel, so it stays in the Rust crate.
10"""
11
12from __future__ import annotations
13
14from pamoja._native import (
15    keyexpr_canonize as canonize,
16    keyexpr_includes as includes,
17    keyexpr_intersects as intersects,
18    keyexpr_is_canon as is_canon,
19    keyexpr_is_valid as is_valid,
20    keyexpr_join as join,
21    keyexpr_matches as matches,
22)
23
24__all__ = [
25    "canonize",
26    "includes",
27    "intersects",
28    "is_canon",
29    "is_valid",
30    "join",
31    "matches",
32]
def canonize(key):

Rewrites a key expression into its canonical form, or None if it is malformed.

def includes(a, b):

Reports whether a selects every key b selects. False if either is malformed.

def intersects(a, b):

Reports whether two key expressions share at least one key, the relation Zenoh routes by. False if either is malformed.

def is_canon(key):

Reports whether a key expression is already in its canonical form.

def is_valid(key):

Reports whether a key expression is well formed.

def join(prefix, suffix):

Joins two key expressions with a / and canonizes the result, or returns None if either side is empty or the joined expression is malformed.

def matches(pattern, key):

Reports whether a pattern selects a key. A chunk that starts with @ is verbatim, and no wildcard selects it.