u-siem 0.7.0

A framework for building custom SIEMs
Documentation 
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use crate::prelude::types::LogString;
use crate::prelude::SiemIp;
use crossbeam_channel::Sender;
use serde::Serialize;
use std::collections::BTreeMap;
use std::sync::Arc;

#[derive(Serialize, Debug)]
pub enum UpdateNetIp {
    Add((SiemIp, u8, LogString)),
    Remove((SiemIp, u8)),
    Replace(IpNetDataset),
}
#[derive(Debug, Clone)]
pub struct IpNetSynDataset {
    dataset: Arc<IpNetDataset>,
    comm: Sender<UpdateNetIp>,
}
impl IpNetSynDataset {
    pub fn new(dataset: Arc<IpNetDataset>, comm: Sender<UpdateNetIp>) -> Self {
        Self { dataset, comm }
    }
    pub fn empty() -> Self {
        let (sender, _) = crossbeam_channel::bounded(1);
        Self {
            dataset: Arc::new(IpNetDataset::new()),
            comm: sender,
        }
    }
    pub fn insert(&self, ip: SiemIp, net: u8, data: LogString) {
        // Todo: improve with local cache to send retries
        let _ = self.comm.try_send(UpdateNetIp::Add((ip, net, data)));
    }
    pub fn remove(&self, ip: SiemIp, net: u8) {
        // Todo: improve with local cache to send retries
        let _ = self.comm.try_send(UpdateNetIp::Remove((ip, net)));
    }
    pub fn update(&self, data: IpNetDataset) {
        // Todo: improve with local cache to send retries
        let _ = self.comm.try_send(UpdateNetIp::Replace(data));
    }
    pub fn get(&self, ip: &SiemIp) -> Option<&LogString> {
        // Todo improve with cached content
        self.dataset.get(ip)
    }
}
#[derive(Serialize, Debug, Default)]
pub struct IpNetDataset {
    data4: BTreeMap<u32, BTreeMap<u32, LogString>>,
    data6: BTreeMap<u32, BTreeMap<u128, LogString>>,
}

impl IpNetDataset {
    pub fn new() -> Self {
        Self {
            data4: BTreeMap::new(),
            data6: BTreeMap::new(),
        }
    }
    pub fn insert<S>(&mut self, ip: SiemIp, net: u8, data: S)
    where
        S: Into<LogString>,
    {
        match ip {
            SiemIp::V4(ip) => {
                let ip_net = ip & std::u32::MAX.checked_shl((32 - net) as u32).unwrap_or(0);
                if self.data4.contains_key(&(net as u32)) {
                    if let Some(dataset) = self.data4.get_mut(&(net as u32)) {
                        dataset.insert(ip_net, data.into());
                    };
                } else {
                    let mut new_net = BTreeMap::new();
                    new_net.insert(ip_net, data.into());
                    self.data4.insert(net as u32, new_net);
                }
            }
            SiemIp::V6(ip) => {
                let ip_net = ip & std::u128::MAX.checked_shl((128 - net) as u32).unwrap_or(0);
                if self.data6.contains_key(&(net as u32)) {
                    if let Some(dataset) = self.data6.get_mut(&(net as u32)) {
                        dataset.insert(ip_net, data.into());
                    };
                } else {
                    let mut new_net = BTreeMap::new();
                    new_net.insert(ip_net, data.into());
                    self.data6.insert(net as u32, new_net);
                }
            }
        }
    }
    pub fn get(&self, ip: &SiemIp) -> Option<&LogString> {
        match ip {
            SiemIp::V4(ip) => {
                let zeros = ip.trailing_zeros();
                for i in zeros..32 {
                    let ip_net = ip & std::u32::MAX.checked_shl(32 - i).unwrap_or(0);
                    match self.data4.get(&i) {
                        Some(map) => match map.get(&ip_net) {
                            Some(v) => return Some(v),
                            None => {
                                continue;
                            }
                        },
                        None => {
                            continue;
                        }
                    }
                }
                None
            }
            SiemIp::V6(ip) => {
                let zeros = ip.trailing_zeros();
                for i in zeros..128 {
                    let ip_net = ip & std::u128::MAX.checked_shl(128 - i).unwrap_or(0);
                    match self.data6.get(&i) {
                        Some(map) => match map.get(&ip_net) {
                            Some(v) => return Some(v),
                            None => {
                                continue;
                            }
                        },
                        None => {
                            continue;
                        }
                    }
                }
                None
            }
        }
    }
    pub fn internal_ref(
        &self,
    ) -> (
        &BTreeMap<u32, BTreeMap<u32, LogString>>,
        &BTreeMap<u32, BTreeMap<u128, LogString>>,
    ) {
        (&self.data4, &self.data6)
    }
}

#[cfg(test)]
mod tests {

    use super::*;
    #[test]
    fn should_find_info_of_ip_in_net_map() {
        let mut dataset = IpNetDataset::new();
        dataset.insert(
            SiemIp::from_ip_str("192.168.1.1").unwrap(),
            24,
            LogString::Borrowed("Local IP "),
        );
        assert_eq!(
            dataset.get(&SiemIp::from_ip_str("192.168.1.1").unwrap()),
            Some(&LogString::Borrowed("Local IP "))
        );
    }
}