robotrt-middleware-core 0.1.0-beta.2

RobotRT modular robotics runtime and middleware components.
Documentation 
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use super::MiddlewareStack;

impl MiddlewareStack {
    pub fn enforce_namespace_boundary(
        &self,
        requester_namespace: &str,
        resolved_name: &str,
    ) -> String {
        if !self.namespace_isolation || !resolved_name.starts_with('/') {
            return resolved_name.to_string();
        }

        let Some(requester_tenant) = tenant_root(requester_namespace) else {
            return resolved_name.to_string();
        };

        let segments = split_absolute_segments(resolved_name);
        if segments.is_empty() {
            return format!("/{requester_tenant}");
        }
        if segments[0] == requester_tenant {
            return resolved_name.to_string();
        }
        if segments.len() == 1 {
            return format!("/{requester_tenant}");
        }

        format!("/{requester_tenant}/{}", segments[1..].join("/"))
    }
}

fn tenant_root(namespace: &str) -> Option<&str> {
    namespace
        .trim_matches('/')
        .split('/')
        .find(|segment| !segment.is_empty())
}

fn split_absolute_segments(name: &str) -> Vec<&str> {
    name.trim_matches('/')
        .split('/')
        .filter(|segment| !segment.is_empty())
        .collect()
}