[#182]: Added GetTrackedVethFromHashMap grpc endpoint to see the tracked veths (pt.2)

LorenzoTettamanti · LorenzoTettamanti · commit 8599b901b470 · 2026-02-14T13:53:34.000+01:00
diff --git a/cli/src/monitoring.rs b/cli/src/monitoring.rs
@@ -10,7 +10,7 @@ use tonic_reflection::pb::v1::server_reflection_response::MessageResponse;
 use agent_api::client::{connect_to_client, connect_to_server_reflection};
 use agent_api::requests::{
     get_all_features, send_active_connection_request, send_dropped_packets_request,
-    send_latency_metrics_request, send_tracked_veth_request,
+    send_latency_metrics_request, send_tracked_veth_request, send_veth_tracked_hashmap_req,
 };
 
 use crate::errors::CliError;
@@ -304,25 +304,24 @@ pub async fn monitor_tracked_veth() -> Result<(), CliError> {
         "Connecting to cortexflow Client".white()
     );
     match connect_to_client().await {
-        Ok(client) => match send_tracked_veth_request(client).await {
+        Ok(client) => match send_veth_tracked_hashmap_req(client).await {
             Ok(response) => {
                 let veth_response = response.into_inner();
-                if veth_response.tot_monitored_veth == 0 {
-                    println!("{} {} ", "=====>".blue().bold(), "No tracked veth found");
-                    Ok(())
-                } else {
-                    println!(
-                        "{} {} {} {} ",
-                        "=====>".blue().bold(),
-                        "Found:",
-                        &veth_response.tot_monitored_veth,
-                        "tracked veth"
-                    );
-                    for veth in veth_response.veth_names.iter() {
-                        println!("{} {}", "=====>".blue().bold(), &veth);
-                    }
-                    Ok(())
+                //  if veth_response.tot_monitored_veth == 0 {
+                //      println!("{} {} ", "=====>".blue().bold(), "No tracked veth found");
+                //      Ok(())
+                //  } else {
+                //      println!(
+                //          "{} {} {} {} ",
+                //          "=====>".blue().bold(),
+                //          "Found:",
+                //          &veth_response.tot_monitored_veth,
+                //          "tracked veth"
+                //      );
+                for veth in veth_response.veths.iter() {
+                    println!("{} {:?}", "=====>".blue().bold(), &veth);
                 }
+                Ok(())
             }
             Err(e) => {
                 return Err(CliError::AgentError(
diff --git a/core/api/Cargo.toml b/core/api/Cargo.toml
@@ -32,7 +32,8 @@ aya = "0.13.1"
 cortexbrain-common = { path = "../common", features = [
     "map-handlers",
     "network-structs",
-    "buffer-reader"
+    "buffer-reader",
+    "monitoring-structs"
 ] }
 tonic-reflection = "0.14.0"
 tonic-build = "0.14.0"
diff --git a/core/api/protos/agent.proto b/core/api/protos/agent.proto
@@ -84,7 +84,13 @@ message VethEvent{
     uint32 pid = 6;                   // Process ID
 }
 
-//declare agent api 
+message VethHashMapResponse{ // returns tracked veth from the tracked_veth hashmap
+    string status = 1;
+    map<string,string> veths = 2;
+}
+
+// Agent Service 
+
 service Agent{
     // active connections endpoint 
     rpc ActiveConnections(RequestActiveConnections) returns (ActiveConnectionResponse);
@@ -102,10 +108,15 @@ service Agent{
     // dropped packets endpoint
     rpc GetDroppedPacketsMetrics(google.protobuf.Empty) returns (DroppedPacketsResponse);
 
+    // TODO: can i combine this 2 endpoints?
     // active veth info endpoint 
     rpc GetTrackedVeth(google.protobuf.Empty) returns (VethResponse);
+    // get tracked veth from blocklist
+    rpc GetTrackedVethFromHashMap(google.protobuf.Empty) returns (VethHashMapResponse);
 }
 
+// Blocklist 
+
 message AddIpToBlocklistRequest{
     optional string ip = 1 ;
 }
diff --git a/core/api/src/agent.rs b/core/api/src/agent.rs
@@ -151,6 +151,17 @@ pub struct VethEvent {
     #[prost(uint32, tag = "6")]
     pub pid: u32,
 }
+/// returns tracked veth from the tracked_veth hashmap
+#[derive(Clone, PartialEq, ::prost::Message)]
+pub struct VethHashMapResponse {
+    #[prost(string, tag = "1")]
+    pub status: ::prost::alloc::string::String,
+    #[prost(map = "string, string", tag = "2")]
+    pub veths: ::std::collections::HashMap<
+        ::prost::alloc::string::String,
+        ::prost::alloc::string::String,
+    >,
+}
 #[derive(Clone, PartialEq, Eq, Hash, ::prost::Message)]
 pub struct AddIpToBlocklistRequest {
     #[prost(string, optional, tag = "1")]
@@ -192,7 +203,6 @@ pub mod agent_client {
     )]
     use tonic::codegen::*;
     use tonic::codegen::http::Uri;
-    /// declare agent api
     #[derive(Debug, Clone)]
     pub struct AgentClient<T> {
         inner: tonic::client::Grpc<T>,
@@ -444,6 +454,31 @@ pub mod agent_client {
                 .insert(GrpcMethod::new("agent.Agent", "GetTrackedVeth"));
             self.inner.unary(req, path, codec).await
         }
+        /// get tracked veth from blocklist
+        pub async fn get_tracked_veth_from_hash_map(
+            &mut self,
+            request: impl tonic::IntoRequest<()>,
+        ) -> std::result::Result<
+            tonic::Response<super::VethHashMapResponse>,
+            tonic::Status,
+        > {
+            self.inner
+                .ready()
+                .await
+                .map_err(|e| {
+                    tonic::Status::unknown(
+                        format!("Service was not ready: {}", e.into()),
+                    )
+                })?;
+            let codec = tonic_prost::ProstCodec::default();
+            let path = http::uri::PathAndQuery::from_static(
+                "/agent.Agent/GetTrackedVethFromHashMap",
+            );
+            let mut req = request.into_request();
+            req.extensions_mut()
+                .insert(GrpcMethod::new("agent.Agent", "GetTrackedVethFromHashMap"));
+            self.inner.unary(req, path, codec).await
+        }
     }
 }
 /// Generated server implementations.
@@ -511,8 +546,15 @@ pub mod agent_server {
             &self,
             request: tonic::Request<()>,
         ) -> std::result::Result<tonic::Response<super::VethResponse>, tonic::Status>;
+        /// get tracked veth from blocklist
+        async fn get_tracked_veth_from_hash_map(
+            &self,
+            request: tonic::Request<()>,
+        ) -> std::result::Result<
+            tonic::Response<super::VethHashMapResponse>,
+            tonic::Status,
+        >;
     }
-    /// declare agent api
     #[derive(Debug)]
     pub struct AgentServer<T> {
         inner: Arc<T>,
@@ -885,6 +927,50 @@ pub mod agent_server {
                     };
                     Box::pin(fut)
                 }
+                "/agent.Agent/GetTrackedVethFromHashMap" => {
+                    #[allow(non_camel_case_types)]
+                    struct GetTrackedVethFromHashMapSvc<T: Agent>(pub Arc<T>);
+                    impl<T: Agent> tonic::server::UnaryService<()>
+                    for GetTrackedVethFromHashMapSvc<T> {
+                        type Response = super::VethHashMapResponse;
+                        type Future = BoxFuture<
+                            tonic::Response<Self::Response>,
+                            tonic::Status,
+                        >;
+                        fn call(&mut self, request: tonic::Request<()>) -> Self::Future {
+                            let inner = Arc::clone(&self.0);
+                            let fut = async move {
+                                <T as Agent>::get_tracked_veth_from_hash_map(
+                                        &inner,
+                                        request,
+                                    )
+                                    .await
+                            };
+                            Box::pin(fut)
+                        }
+                    }
+                    let accept_compression_encodings = self.accept_compression_encodings;
+                    let send_compression_encodings = self.send_compression_encodings;
+                    let max_decoding_message_size = self.max_decoding_message_size;
+                    let max_encoding_message_size = self.max_encoding_message_size;
+                    let inner = self.inner.clone();
+                    let fut = async move {
+                        let method = GetTrackedVethFromHashMapSvc(inner);
+                        let codec = tonic_prost::ProstCodec::default();
+                        let mut grpc = tonic::server::Grpc::new(codec)
+                            .apply_compression_config(
+                                accept_compression_encodings,
+                                send_compression_encodings,
+                            )
+                            .apply_max_message_size_config(
+                                max_decoding_message_size,
+                                max_encoding_message_size,
+                            );
+                        let res = grpc.unary(method, req).await;
+                        Ok(res)
+                    };
+                    Box::pin(fut)
+                }
                 _ => {
                     Box::pin(async move {
                         let mut response = http::Response::new(
diff --git a/core/api/src/api.rs b/core/api/src/api.rs
@@ -1,8 +1,8 @@
 use anyhow::Context;
+use anyhow::anyhow;
 use chrono::Local;
 use cortexbrain_common::formatters::{format_ipv4, format_ipv6};
 use cortexbrain_common::map_handlers::load_perf_event_array_from_mapdata;
-use prost::bytes::BytesMut;
 use std::str::FromStr;
 use std::sync::Mutex;
 use tonic::{Request, Response, Status};
@@ -28,7 +28,8 @@ use cortexbrain_common::buffer_type::VethLog;
 // *  contains agent api configuration
 use crate::agent::{
     ActiveConnectionResponse, AddIpToBlocklistRequest, BlocklistResponse, RequestActiveConnections,
-    RmIpFromBlocklistRequest, RmIpFromBlocklistResponse, VethResponse, agent_server::Agent,
+    RmIpFromBlocklistRequest, RmIpFromBlocklistResponse, VethHashMapResponse, VethResponse,
+    agent_server::Agent,
 };
 use crate::constants::PIN_BLOCKLIST_MAP_PATH;
 
@@ -38,6 +39,9 @@ use cortexbrain_common::buffer_type::IpProtocols;
 use std::net::Ipv4Addr;
 use tracing::warn;
 
+use cortexbrain_common::buffer_type::BufferSize;
+use cortexbrain_common::map_handlers::map_manager;
+
 pub struct AgentApi {
     //* event_rx is an istance of a mpsc receiver.
     //* is used to receive the data from the transmitter (tx)
@@ -162,6 +166,9 @@ impl Default for AgentApi {
             tracked_veth_tx: veth_tx.clone(),
         };
 
+        // init map manager
+        //let map_manager = map_manager(maps)?
+
         // For network metrics
 
         //spawn an event readers
@@ -177,7 +184,7 @@ impl Default for AgentApi {
                     .open(cpu_id, None)
                     .expect("Error during the creation of net_events_buf structure");
 
-                let buffers = vec![BytesMut::with_capacity(4096); 8];
+                let buffers = BufferSize::ClassifierNetEvents.set_buffer();
                 net_events_buffer.push((buf, buffers));
             }
 
@@ -262,7 +269,7 @@ impl Default for AgentApi {
                     .open(cpu_id, None)
                     .expect("Error during the creation of net_metrics_buf structure");
 
-                let buffers = vec![BytesMut::with_capacity(4096); 8];
+                let buffers = BufferSize::NetworkMetricsEvents.set_buffer();
                 net_metrics_buffer.push((buf, buffers));
             }
 
@@ -343,7 +350,7 @@ impl Default for AgentApi {
                     .open(cpu_id, None)
                     .expect("Error during the creation of time stamp events buf structure");
 
-                let buffers = vec![BytesMut::with_capacity(4096); 8];
+                let buffers = BufferSize::TimeMetricsEvents.set_buffer();
                 ts_events_buffer.push((buf, buffers));
             }
 
@@ -421,7 +428,7 @@ impl Default for AgentApi {
                     .open(cpu_id, None)
                     .expect("Error during the creation of time stamp events buf structure");
 
-                let buffers = vec![BytesMut::with_capacity(4096); 8];
+                let buffers = BufferSize::VethEvents.set_buffer();
                 veth_events_buffer.push((buf, buffers));
             }
 
@@ -560,7 +567,10 @@ impl Agent for AgentApi {
             //convert ip from string to [u8;4] type and insert into the bpf map
             let u8_4_ip = Ipv4Addr::from_str(&ip).unwrap().octets();
             //TODO: convert datetime in a kernel compatible format
-            blocklist_map.insert(u8_4_ip, u8_4_ip, 0);
+            blocklist_map
+                .insert(u8_4_ip, u8_4_ip, 0)
+                .map_err(|e| anyhow!("Cannot insert address in the blocklist. Reason: {}", e))
+                .unwrap();
             info!("CURRENT BLOCKLIST: {:?}", blocklist_map);
         }
         let path = std::env::var(PIN_BLOCKLIST_MAP_PATH)
@@ -774,4 +784,33 @@ impl Agent for AgentApi {
 
         Ok(Response::new(response))
     }
+
+    async fn get_tracked_veth_from_hash_map(
+        &self,
+        request: Request<()>,
+    ) -> Result<Response<VethHashMapResponse>, Status> {
+        info!("Returning veth hashmap");
+        //open blocklist map
+        let mapdata = MapData::from_pin("/sys/fs/bpf/maps/tracked_veth")
+            .expect("cannot open tracked_veth Mapdata");
+        let tracked_veth_mapdata = Map::HashMap(mapdata); //load mapdata
+
+        let tracked_veth_map: ayaHashMap<MapData, [u8; 16], [u8; 8]> =
+            ayaHashMap::try_from(tracked_veth_mapdata).unwrap();
+
+        //convert the maps with a buffer to match the protobuffer types
+
+        let mut converted_tracked_veth_map: HashMap<String, String> = HashMap::new();
+        for item in tracked_veth_map.iter() {
+            let (k, v) = item.unwrap();
+            // convert keys and values from [u8;4] to String
+            let key = String::from_utf8(k.to_vec()).unwrap();
+            let value = String::from_utf8(v.to_vec()).unwrap();
+            converted_tracked_veth_map.insert(key, value);
+        }
+        Ok(Response::new(VethHashMapResponse {
+            status: "success".to_string(),
+            veths: converted_tracked_veth_map,
+        }))
+    }
 }
diff --git a/core/api/src/requests.rs b/core/api/src/requests.rs
@@ -14,6 +14,7 @@ use crate::agent::LatencyMetricsResponse;
 use crate::agent::RequestActiveConnections;
 use crate::agent::RmIpFromBlocklistRequest;
 use crate::agent::RmIpFromBlocklistResponse;
+use crate::agent::VethHashMapResponse;
 use crate::agent::VethResponse;
 use crate::agent::agent_client::AgentClient;
 
@@ -100,3 +101,12 @@ pub async fn send_tracked_veth_request(
     let response = client.get_tracked_veth(request).await?;
     Ok(response)
 }
+
+#[cfg(feature = "client")]
+pub async fn send_veth_tracked_hashmap_req(
+    mut client: AgentClient<Channel>,
+) -> Result<Response<VethHashMapResponse>, Error> {
+    let request = Request::new(());
+    let response = client.get_tracked_veth_from_hash_map(request).await?;
+    Ok(response)
+}
