add bgpkit as2rel dataset access

README.md

@@ -80,7 +80,7 @@ println!(
 
 `asnames` is a module for Autonomous System (AS) names and country lookup
 
-Data source:
+#### Data sources
 - RIPE NCC asnames: <https://ftp.ripe.net/ripe/asnames/asn.txt>
 - CAIDA as-to-organization mapping: <https://www.caida.org/catalog/datasets/as-organizations/>
 - APNIC AS population data: <https://stats.labs.apnic.net/cgi-bin/aspop>
@@ -161,7 +161,7 @@ assert_eq!(countries.lookup_by_name("united states").len(), 2);
 assert_eq!(countries.lookup_by_name("united kingdom").len(), 1);
 ```
 
-### RPKI utilities
+### RPKI Utilities
 
 #### Data sources
 
@@ -225,6 +225,40 @@ assert!(bogons.is_bogon_prefix(&"2001::/24".parse().unwrap()));
 assert!(bogons.is_bogon_asn(65535));
 ```
 
+### AS-level relationship
+
+`bgpkit-commons` provides access to AS-level relationship data generated by BGPKIT.
+
+#### Data sources
+
+* Raw data files available at: <https://data.bgpkit.com/as2rel/>
+
+#### Data Structure
+
+```rust
+pub enum AsRelationship {
+    ProviderCustomer,
+    CustomerProvider,
+    PeerPeer,
+}
+
+pub struct As2relBgpkitData {
+    pub rel: AsRelationship,
+    pub peers_count: u32,
+    pub max_peer_count: u32,
+}
+```
+
+#### Usage Examples
+
+```rust
+let bgpkit = bgpkit_commons::as2rel::As2relBgpkit::new().unwrap();
+let (v4_data, v6_data) = bgpkit.lookup_pair(400644, 54825);
+assert!(v4_data.is_none());
+assert!(v6_data.is_some());
+assert_eq!(v6_data.unwrap().rel, bgpkit_commons::as2rel::AsRelationship::CustomerProvider);
+```
+
 ### Feature Flags
 
 - `rustls`: use rustls instead of native-tls for the underlying HTTPS requests

src/as2rel/mod.rs

@@ -0,0 +1,161 @@
+//! AS-level relationship generated by BGPKIT
+//!
+//! Raw data files available at: <https://data.bgpkit.com/as2rel/>
+//! * [as2rel-latest.json.bz2](https://data.bgpkit.com/as2rel/as2rel-latest.json.bz2): latest combined
+//! * [as2rel-v4-latest.json.bz2](https://data.bgpkit.com/as2rel/as2rel-v4-latest.json.bz2): latest IPv4 relationship
+//! * [as2rel-v6-latest.json.bz2](https://data.bgpkit.com/as2rel/as2rel-v6-latest.json.bz2): latest IPv6 relationship
+
+use anyhow::Result;
+use serde::{Deserialize, Serialize};
+use std::collections::HashMap;
+
+#[allow(dead_code)]
+const AS2REL_LATEST_COMBINED: &str = "https://data.bgpkit.com/as2rel/as2rel-latest.json.bz2";
+
+const AS2REL_LATEST_V4: &str = "https://data.bgpkit.com/as2rel/as2rel-v4-latest.json.bz2";
+const AS2REL_LATEST_V6: &str = "https://data.bgpkit.com/as2rel/as2rel-v6-latest.json.bz2";
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum AsRelationship {
+    ProviderCustomer,
+    CustomerProvider,
+    PeerPeer,
+}
+
+impl Serialize for AsRelationship {
+    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: serde::Serializer,
+    {
+        match self {
+            AsRelationship::ProviderCustomer => serializer.serialize_str("pc"),
+            AsRelationship::CustomerProvider => serializer.serialize_str("cp"),
+            AsRelationship::PeerPeer => serializer.serialize_str("pp"),
+        }
+    }
+}
+
+impl<'de> Deserialize<'de> for AsRelationship {
+    fn deserialize<D>(deserializer: D) -> Result<AsRelationship, D::Error>
+    where
+        D: serde::Deserializer<'de>,
+    {
+        let s = i8::deserialize(deserializer)?;
+        match s {
+            -1 | 1 => Ok(AsRelationship::ProviderCustomer),
+            0 => Ok(AsRelationship::PeerPeer),
+            _ => Err(serde::de::Error::custom("invalid relationship")),
+        }
+    }
+}
+
+#[derive(Debug, Copy, Clone, Serialize, Deserialize)]
+struct As2relEntry {
+    asn1: u32,
+    asn2: u32,
+    paths_count: u32,
+    peers_count: u32,
+    rel: AsRelationship,
+}
+
+impl As2relEntry {
+    fn reverse(&self) -> Self {
+        Self {
+            asn1: self.asn2,
+            asn2: self.asn1,
+            paths_count: self.paths_count,
+            peers_count: self.peers_count,
+            rel: match self.rel {
+                AsRelationship::ProviderCustomer => AsRelationship::CustomerProvider,
+                AsRelationship::CustomerProvider => AsRelationship::ProviderCustomer,
+                AsRelationship::PeerPeer => AsRelationship::PeerPeer,
+            },
+        }
+    }
+}
+
+pub struct As2relBgpkit {
+    v4_rels_map: HashMap<(u32, u32), As2relEntry>,
+    v6_rels_map: HashMap<(u32, u32), As2relEntry>,
+    v4_max_peer_count: u32,
+    v6_max_peer_count: u32,
+}
+
+#[derive(Debug, Copy, Clone, Serialize, Deserialize)]
+pub struct As2relBgpkitData {
+    pub rel: AsRelationship,
+    pub peers_count: u32,
+    pub max_peer_count: u32,
+}
+
+impl As2relBgpkit {
+    pub fn new() -> Result<Self> {
+        let v4_rels = parse_as2rel_data(AS2REL_LATEST_V4)?;
+        let v6_rels = parse_as2rel_data(AS2REL_LATEST_V6)?;
+        let mut v4_rels_map = HashMap::new();
+        let mut v6_rels_map = HashMap::new();
+        let mut v4_max_peer_count = 0;
+        let mut v6_max_peer_count = 0;
+        for entry in v4_rels {
+            v4_rels_map.insert((entry.asn1, entry.asn2), entry);
+            v4_rels_map.insert((entry.asn2, entry.asn1), entry.reverse());
+
+            v4_max_peer_count = v4_max_peer_count.max(entry.peers_count);
+        }
+        for entry in v6_rels {
+            v6_rels_map.insert((entry.asn1, entry.asn2), entry);
+            v6_rels_map.insert((entry.asn2, entry.asn1), entry.reverse());
+            v6_max_peer_count = v6_max_peer_count.max(entry.peers_count);
+        }
+        Ok(Self {
+            v4_rels_map,
+            v6_rels_map,
+            v4_max_peer_count,
+            v6_max_peer_count,
+        })
+    }
+
+    pub fn lookup_pair(
+        &self,
+        asn1: u32,
+        asn2: u32,
+    ) -> (Option<As2relBgpkitData>, Option<As2relBgpkitData>) {
+        let v4_entry = self.v4_rels_map.get(&(asn1, asn2));
+        let v6_entry = self.v6_rels_map.get(&(asn1, asn2));
+
+        (
+            v4_entry.map(|entry| As2relBgpkitData {
+                rel: entry.rel,
+                peers_count: entry.peers_count,
+                max_peer_count: self.v4_max_peer_count,
+            }),
+            v6_entry.map(|entry| As2relBgpkitData {
+                rel: entry.rel,
+                peers_count: entry.peers_count,
+                max_peer_count: self.v6_max_peer_count,
+            }),
+        )
+    }
+}
+
+fn parse_as2rel_data(url: &str) -> Result<Vec<As2relEntry>> {
+    let data: Vec<As2relEntry> = oneio::read_json_struct(url)?;
+    Ok(data)
+}
+
+#[cfg(test)]
+mod tests {
+
+    #[test]
+    fn test_loading_raw_data() {
+        let bgpkit = crate::as2rel::As2relBgpkit::new().unwrap();
+        let (v4_data, v6_data) = bgpkit.lookup_pair(400644, 54825);
+        assert!(v4_data.is_none());
+        assert!(v6_data.is_some());
+        assert_eq!(
+            v6_data.unwrap().rel,
+            crate::as2rel::AsRelationship::CustomerProvider
+        );
+        dbg!(v6_data);
+    }
+}

src/lib.rs

@@ -71,7 +71,7 @@
 //!
 //! `asnames` is a module for Autonomous System (AS) names and country lookup
 //!
-//! Data source:
+//! ### Data sources
 //! - RIPE NCC asnames: <https://ftp.ripe.net/ripe/asnames/asn.txt>
 //! - CAIDA as-to-organization mapping: <https://www.caida.org/catalog/datasets/as-organizations/>
 //! - APNIC AS population data: <https://stats.labs.apnic.net/cgi-bin/aspop>
@@ -152,7 +152,7 @@
 //! assert_eq!(countries.lookup_by_name("united kingdom").len(), 1);
 //! ```
 //!
-//! ## RPKI utilities
+//! ## RPKI Utilities
 //!
 //! ### Data sources
 //!
@@ -216,6 +216,40 @@
 //! assert!(bogons.is_bogon_asn(65535));
 //! ```
 //!
+//! ## AS-level relationship
+//!
+//! `bgpkit-commons` provides access to AS-level relationship data generated by BGPKIT.
+//!
+//! ### Data sources
+//!
+//! * Raw data files available at: <https://data.bgpkit.com/as2rel/>
+//!
+//! ### Data Structure
+//!
+//! ```rust
+//! pub enum AsRelationship {
+//!     ProviderCustomer,
+//!     CustomerProvider,
+//!     PeerPeer,
+//! }
+//!
+//! pub struct As2relBgpkitData {
+//!     pub rel: AsRelationship,
+//!     pub peers_count: u32,
+//!     pub max_peer_count: u32,
+//!}
+//! ```
+//!
+//! ### Usage Examples
+//!
+//!```rust
+//! let bgpkit = bgpkit_commons::as2rel::As2relBgpkit::new().unwrap();
+//! let (v4_data, v6_data) = bgpkit.lookup_pair(400644, 54825);
+//! assert!(v4_data.is_none());
+//! assert!(v6_data.is_some());
+//! assert_eq!(v6_data.unwrap().rel, bgpkit_commons::as2rel::AsRelationship::CustomerProvider);
+//! ```
+//!
 //! ## Feature Flags
 //!
 //! - `rustls`: use rustls instead of native-tls for the underlying HTTPS requests
@@ -259,6 +293,7 @@
     html_favicon_url = "https://raw.githubusercontent.com/bgpkit/assets/main/logos/favicon.ico"
 )]
 
+pub mod as2rel;
 pub mod asnames;
 pub mod bogons;
 pub mod collectors;