DA network in verifier libp2p adapter (#715)

* Use da network in verifier libp2p adapter

* VerifierAdapter in da tests

* Simplify verifier adapter

* Start da_network in da tests

nodes/nomos-node/Cargo.toml

@@ -17,6 +17,7 @@ http = "0.2.9"
 hex = "0.4.3"
 kzgrs-backend = { path = "../../nomos-da/kzgrs-backend" }
 subnetworks-assignations = { path = "../../nomos-da/network/subnetworks-assignations" }
+nomos-da-network-core = { path = "../../nomos-da/network/core" }
 overwatch-rs = { git = "https://github.com/logos-co/Overwatch", rev = "2f70806" }
 overwatch-derive = { git = "https://github.com/logos-co/Overwatch", rev = "ac28d01" }
 tracing = "0.1"

nodes/nomos-node/src/api.rs

@@ -21,8 +21,10 @@ use nomos_core::da::blob::info::DispersedBlobInfo;
 use nomos_core::da::blob::metadata::Metadata;
 use nomos_core::da::DaVerifier as CoreDaVerifier;
 use nomos_core::{da::blob::Blob, header::HeaderId, tx::Transaction};
+use nomos_da_network_core::SubnetworkId;
 use nomos_da_sampling::backend::DaSamplingServiceBackend;
 use nomos_da_verifier::backend::VerifierBackend;
+use nomos_libp2p::PeerId;
 use nomos_mempool::{
     network::adapters::libp2p::Libp2pAdapter as MempoolNetworkAdapter,
     tx::service::openapi::Status, MempoolMetrics,
@@ -32,6 +34,7 @@ use nomos_storage::backends::StorageSerde;
 use overwatch_rs::overwatch::handle::OverwatchHandle;
 use rand::{RngCore, SeedableRng};
 use serde::{de::DeserializeOwned, Deserialize, Serialize};
+use subnetworks_assignations::MembershipHandler;
 use tower_http::{
     cors::{Any, CorsLayer},
     trace::TraceLayer,
@@ -53,6 +56,7 @@ pub struct AxumBackend<
     A,
     B,
     C,
+    M,
     V,
     VB,
     T,
@@ -66,6 +70,7 @@ pub struct AxumBackend<
     _attestation: core::marker::PhantomData<A>,
     _blob: core::marker::PhantomData<B>,
     _certificate: core::marker::PhantomData<C>,
+    _membership: core::marker::PhantomData<M>,
     _vid: core::marker::PhantomData<V>,
     _verifier_backend: core::marker::PhantomData<VB>,
     _tx: core::marker::PhantomData<T>,
@@ -93,6 +98,7 @@ impl<
         A,
         B,
         C,
+        M,
         V,
         VB,
         T,
@@ -106,6 +112,7 @@ impl<
         A,
         B,
         C,
+        M,
         V,
         VB,
         T,
@@ -129,6 +136,12 @@ where
         + Sync
         + 'static,
     <C as DispersedBlobInfo>::BlobId: Clone + Send + Sync,
+    M: MembershipHandler<NetworkId = SubnetworkId, Id = PeerId>
+        + Clone
+        + Debug
+        + Send
+        + Sync
+        + 'static,
     V: DispersedBlobInfo<BlobId = [u8; 32]>
         + From<C>
         + Eq
@@ -180,6 +193,7 @@ where
             _attestation: core::marker::PhantomData,
             _blob: core::marker::PhantomData,
             _certificate: core::marker::PhantomData,
+            _membership: core::marker::PhantomData,
             _vid: core::marker::PhantomData,
             _verifier_backend: core::marker::PhantomData,
             _tx: core::marker::PhantomData,
@@ -241,7 +255,7 @@ where
                     >,
                 ),
             )
-            .route("/da/add_blob", routing::post(add_blob::<A, B, VB, S>))
+            .route("/da/add_blob", routing::post(add_blob::<A, B, M, VB, S>))
             .route(
                 "/da/get_range",
                 routing::post(
@@ -441,7 +455,7 @@ where
         (status = 500, description = "Internal server error", body = String),
     )
 )]
-async fn add_blob<A, B, VB, SS>(
+async fn add_blob<A, B, M, VB, SS>(
     State(handle): State<OverwatchHandle>,
     Json(blob): Json<B>,
 ) -> Response
@@ -450,12 +464,18 @@ where
     B: Blob + Serialize + DeserializeOwned + Clone + Send + Sync + 'static,
     <B as Blob>::BlobId: AsRef<[u8]> + Send + Sync + 'static,
     <B as Blob>::ColumnIndex: AsRef<[u8]> + Send + Sync + 'static,
+    M: MembershipHandler<NetworkId = SubnetworkId, Id = PeerId>
+        + Clone
+        + Debug
+        + Send
+        + Sync
+        + 'static,
     VB: VerifierBackend + CoreDaVerifier<DaBlob = B>,
     <VB as VerifierBackend>::Settings: Clone,
     <VB as CoreDaVerifier>::Error: Error,
     SS: StorageSerde + Send + Sync + 'static,
 {
-    make_request_and_return_response!(da::add_blob::<A, B, VB, SS>(&handle, blob))
+    make_request_and_return_response!(da::add_blob::<A, B, M, VB, SS>(&handle, blob))
 }
 
 #[derive(Serialize, Deserialize)]

nodes/nomos-node/src/lib.rs

@@ -58,6 +58,7 @@ pub type NomosApiService = ApiService<
         (),
         DaBlob,
         BlobInfo,
+        NomosDaMembership,
         BlobInfo,
         KzgrsDaVerifier,
         Tx,
@@ -124,7 +125,7 @@ pub type DaSampling = DaSamplingService<
 
 pub type DaVerifier = DaVerifierService<
     KzgrsDaVerifier,
-    VerifierNetworkAdapter<DaBlob, ()>,
+    VerifierNetworkAdapter<FillFromNodeList>,
     VerifierStorageAdapter<(), DaBlob, Wire>,
 >;
 

nomos-services/api/Cargo.toml

@@ -31,6 +31,8 @@ full-replication = { path = "../../nomos-da/full-replication" }
 kzgrs-backend = { path = "../../nomos-da/kzgrs-backend" }
 rand = "0.8"
 serde = { version = "1", features = ["derive"] }
+subnetworks-assignations = { path = "../../nomos-da/network/subnetworks-assignations" }
+nomos-da-network-core = { path = "../../nomos-da/network/core" }
 tokio = { version = "1.33", default-features = false, features = ["sync"] }
 
 

nomos-services/api/src/http/da.rs

@@ -10,11 +10,13 @@ use nomos_da_indexer::DaMsg;
 use nomos_da_indexer::{
     consensus::adapters::cryptarchia::CryptarchiaConsensusAdapter, DataIndexerService,
 };
+use nomos_da_network_core::SubnetworkId;
 use nomos_da_sampling::backend::DaSamplingServiceBackend;
 use nomos_da_verifier::backend::VerifierBackend;
 use nomos_da_verifier::network::adapters::libp2p::Libp2pAdapter;
 use nomos_da_verifier::storage::adapters::rocksdb::RocksAdapter as VerifierStorageAdapter;
 use nomos_da_verifier::{DaVerifierMsg, DaVerifierService};
+use nomos_libp2p::PeerId;
 use nomos_mempool::backend::mockpool::MockPool;
 use nomos_mempool::network::adapters::libp2p::Libp2pAdapter as MempoolNetworkAdapter;
 use nomos_storage::backends::rocksdb::RocksBackend;
@@ -27,6 +29,7 @@ use serde::Serialize;
 use std::error::Error;
 use std::fmt::Debug;
 use std::hash::Hash;
+use subnetworks_assignations::MembershipHandler;
 use tokio::sync::oneshot;
 
 pub type DaIndexer<
@@ -57,10 +60,10 @@ pub type DaIndexer<
     SamplingRng,
 >;
 
-pub type DaVerifier<A, B, VB, SS> =
+pub type DaVerifier<A, B, M, VB, SS> =
-    DaVerifierService<VB, Libp2pAdapter<B, A>, VerifierStorageAdapter<A, B, SS>>;
+    DaVerifierService<VB, Libp2pAdapter<M>, VerifierStorageAdapter<A, B, SS>>;
 
-pub async fn add_blob<A, B, VB, SS>(
+pub async fn add_blob<A, B, M, VB, SS>(
     handle: &OverwatchHandle,
     blob: B,
 ) -> Result<Option<()>, DynError>
@@ -69,12 +72,21 @@ where
     B: Blob + Serialize + DeserializeOwned + Clone + Send + Sync + 'static,
     <B as Blob>::BlobId: AsRef<[u8]> + Send + Sync + 'static,
     <B as Blob>::ColumnIndex: AsRef<[u8]> + Send + Sync + 'static,
+    M: MembershipHandler<NetworkId = SubnetworkId, Id = PeerId>
+        + Clone
+        + Debug
+        + Send
+        + Sync
+        + 'static,
     VB: VerifierBackend + CoreDaVerifier<DaBlob = B>,
     <VB as VerifierBackend>::Settings: Clone,
     <VB as CoreDaVerifier>::Error: Error,
     SS: StorageSerde + Send + Sync + 'static,
 {
-    let relay = handle.relay::<DaVerifier<A, B, VB, SS>>().connect().await?;
+    let relay = handle
+        .relay::<DaVerifier<A, B, M, VB, SS>>()
+        .connect()
+        .await?;
     let (sender, receiver) = oneshot::channel();
     relay
         .send(DaVerifierMsg::AddBlob {

nomos-services/data-availability/tests/Cargo.toml

@@ -28,12 +28,12 @@ overwatch-rs = { git = "https://github.com/logos-co/Overwatch", rev = "2f70806"
 overwatch-derive = { git = "https://github.com/logos-co/Overwatch", rev = "ac28d01" }
 rand = "0.8"
 rand_chacha = "0.3"
+subnetworks-assignations = { path = "../../../nomos-da/network/subnetworks-assignations" }
 tokio = { version = "1", features = ["sync"] }
 tokio-stream = "0.1.15"
 tempfile = "3.6"
 tracing = "0.1"
 time = "0.3"
-subnetworks-assignations = { path = "../../../nomos-da/network/subnetworks-assignations" }
 
 [dev-dependencies]
 blake2 = { version = "0.10" }

nomos-services/data-availability/tests/src/common.rs

@@ -5,6 +5,7 @@ use nomos_core::{da::blob::info::DispersedBlobInfo, header::HeaderId, tx::Transa
 use nomos_da_indexer::consensus::adapters::cryptarchia::CryptarchiaConsensusAdapter;
 use nomos_da_indexer::storage::adapters::rocksdb::RocksAdapter as IndexerStorageAdapter;
 use nomos_da_indexer::DataIndexerService;
+use nomos_da_sampling::DaSamplingService;
 use nomos_da_sampling::{
     backend::kzgrs::KzgrsSamplingBackend,
     network::adapters::libp2p::Libp2pAdapter as SamplingLibp2pAdapter,
@@ -18,7 +19,7 @@ use nomos_mempool::network::adapters::libp2p::Libp2pAdapter as MempoolNetworkAda
 use nomos_mempool::{backend::mockpool::MockPool, TxMempoolService};
 use nomos_storage::backends::rocksdb::RocksBackend;
 use rand_chacha::ChaCha20Rng;
-use subnetworks_assignations::versions::v2::FillWithOriginalReplication;
+use subnetworks_assignations::versions::v1::FillFromNodeList;
 
 pub use nomos_core::{
     da::blob::select::FillSize as FillSizeWithBlobs, tx::select::FillSize as FillSizeWithTx,
@@ -26,6 +27,9 @@ pub use nomos_core::{
 use nomos_mempool::da::service::DaMempoolService;
 use nomos_node::{Tx, Wire};
 
+/// Membership used by the DA Network service.
+pub type NomosDaMembership = FillFromNodeList;
+
 pub(crate) type Cryptarchia = cryptarchia_consensus::CryptarchiaConsensus<
     cryptarchia_consensus::network::adapters::libp2p::LibP2pAdapter<Tx, BlobInfo>,
     MockPool<HeaderId, Tx, <Tx as Transaction>::Hash>,
@@ -36,7 +40,13 @@ pub(crate) type Cryptarchia = cryptarchia_consensus::CryptarchiaConsensus<
     FillSizeWithBlobs<MB16, BlobInfo>,
     RocksBackend<Wire>,
     KzgrsSamplingBackend<ChaCha20Rng>,
-    SamplingLibp2pAdapter<FillWithOriginalReplication>,
+    SamplingLibp2pAdapter<NomosDaMembership>,
+    ChaCha20Rng,
+>;
+
+pub type DaSampling = DaSamplingService<
+    KzgrsSamplingBackend<ChaCha20Rng>,
+    SamplingLibp2pAdapter<NomosDaMembership>,
     ChaCha20Rng,
 >;
 
@@ -55,7 +65,7 @@ pub(crate) type DaIndexer = DataIndexerService<
     FillSizeWithBlobs<MB16, BlobInfo>,
     RocksBackend<Wire>,
     KzgrsSamplingBackend<ChaCha20Rng>,
-    SamplingLibp2pAdapter<FillWithOriginalReplication>,
+    SamplingLibp2pAdapter<NomosDaMembership>,
     ChaCha20Rng,
 >;
 
@@ -71,7 +81,7 @@ pub(crate) type DaMempool = DaMempoolService<
 
 pub(crate) type DaVerifier = DaVerifierService<
     KzgrsDaVerifier,
-    Libp2pAdapter<DaBlob, ()>,
+    Libp2pAdapter<NomosDaMembership>,
     VerifierStorageAdapter<(), DaBlob, Wire>,
 >;
 

nomos-services/data-availability/tests/src/verifier_integration.rs

@@ -14,9 +14,18 @@ use nomos_core::da::{blob::info::DispersedBlobInfo, DaEncoder as _};
 use nomos_core::tx::Transaction;
 use nomos_da_indexer::storage::adapters::rocksdb::RocksAdapterSettings as IndexerStorageSettings;
 use nomos_da_indexer::IndexerSettings;
+use nomos_da_network_service::backends::libp2p::validator::{
+    DaNetworkValidatorBackend, DaNetworkValidatorBackendSettings,
+};
+use nomos_da_network_service::NetworkConfig as DaNetworkConfig;
+use nomos_da_network_service::NetworkService as DaNetworkService;
+use nomos_da_sampling::backend::kzgrs::KzgrsSamplingBackendSettings;
+use nomos_da_sampling::network::adapters::libp2p::DaNetworkSamplingSettings;
+use nomos_da_sampling::DaSamplingServiceSettings;
 use nomos_da_verifier::backend::kzgrs::KzgrsDaVerifierSettings;
 use nomos_da_verifier::storage::adapters::rocksdb::RocksAdapterSettings as VerifierStorageSettings;
 use nomos_da_verifier::DaVerifierServiceSettings;
+use nomos_libp2p::{ed25519, identity, PeerId};
 use nomos_libp2p::{Multiaddr, SwarmConfig};
 use nomos_mempool::network::adapters::libp2p::Settings as AdapterSettings;
 use nomos_mempool::{DaMempoolSettings, TxMempoolSettings};
@@ -28,6 +37,7 @@ use overwatch_derive::*;
 use overwatch_rs::overwatch::{Overwatch, OverwatchRunner};
 use overwatch_rs::services::handle::ServiceHandle;
 use rand::{thread_rng, Rng, RngCore};
+use subnetworks_assignations::versions::v1::FillFromNodeList;
 use tempfile::{NamedTempFile, TempDir};
 use time::OffsetDateTime;
 // internal
@@ -43,12 +53,14 @@ struct ClientNode {
 #[derive(Services)]
 struct VerifierNode {
     network: ServiceHandle<NetworkService<NetworkBackend>>,
+    da_network: ServiceHandle<DaNetworkService<DaNetworkValidatorBackend<FillFromNodeList>>>,
     cl_mempool: ServiceHandle<TxMempool>,
     da_mempool: ServiceHandle<DaMempool>,
     storage: ServiceHandle<StorageService<RocksBackend<Wire>>>,
     cryptarchia: ServiceHandle<Cryptarchia>,
     indexer: ServiceHandle<DaIndexer>,
     verifier: ServiceHandle<DaVerifier>,
+    da_sampling: ServiceHandle<DaSampling>,
 }
 
 // Client node is just an empty overwatch service to spawn a task that could communicate with other
@@ -87,6 +99,18 @@ fn new_node(
                     initial_peers,
                 },
             },
+            da_network: DaNetworkConfig {
+                backend: DaNetworkValidatorBackendSettings {
+                    node_key: ed25519::SecretKey::generate(),
+                    membership: FillFromNodeList::new(
+                        &[PeerId::from(identity::Keypair::generate_ed25519().public())],
+                        2,
+                        1,
+                    ),
+                    addresses: Default::default(),
+                    listening_address: "/ip4/127.0.0.1/udp/0/quic-v1".parse::<Multiaddr>().unwrap(),
+                },
+            },
             cl_mempool: TxMempoolSettings {
                 backend: (),
                 network: AdapterSettings {
@@ -128,6 +152,19 @@ fn new_node(
                     blob_storage_directory: blobs_dir.clone(),
                 },
             },
+            da_sampling: DaSamplingServiceSettings {
+                // TODO: setup this properly!
+                sampling_settings: KzgrsSamplingBackendSettings {
+                    num_samples: 0,
+                    // Sampling service period can't be zero.
+                    old_blobs_check_interval: Duration::from_secs(1),
+                    blobs_validity_duration: Duration::from_secs(1),
+                },
+                network_adapter_settings: DaNetworkSamplingSettings {
+                    num_samples: 0,
+                    subnet_size: 0,
+                },
+            },
         },
         None,
     )

nomos-services/data-availability/verifier/Cargo.toml

@@ -10,17 +10,20 @@ bytes = "1.2"
 futures = "0.3"
 hex = "0.4.3"
 kzgrs-backend = { path = "../../../nomos-da/kzgrs-backend" }
+libp2p = { version = "0.54", features = ["ed25519"] }
 nomos-core = { path = "../../../nomos-core" }
 nomos-da-storage = { path = "../../../nomos-da/storage" }
-nomos-network = { path = "../../../nomos-services/network" }
+nomos-da-network-core = { path = "../../../nomos-da/network/core" }
+nomos-da-network-service = { path = "../../../nomos-services/data-availability/network" }
 nomos-storage = { path = "../../../nomos-services/storage" }
 overwatch-rs = { git = "https://github.com/logos-co/Overwatch", rev = "2f70806" }
 overwatch-derive = { git = "https://github.com/logos-co/Overwatch", rev = "ac28d01" }
 serde = { version = "1.0", features = ["derive"] }
+subnetworks-assignations = { path = "../../../nomos-da/network/subnetworks-assignations" }
 tokio = { version = "1", features = ["sync", "macros"] }
 tokio-stream = "0.1.15"
 tracing = "0.1"
 
 [features]
 rocksdb-backend = ["nomos-storage/rocksdb-backend"]
-libp2p = ["nomos-network/libp2p"]
+libp2p = []

nomos-services/data-availability/verifier/src/lib.rs

@@ -17,7 +17,7 @@ use tracing::{error, span, Instrument, Level};
 // internal
 use backend::VerifierBackend;
 use network::NetworkAdapter;
-use nomos_network::NetworkService;
+use nomos_da_network_service::NetworkService;
 use overwatch_rs::services::handle::ServiceStateHandle;
 use overwatch_rs::services::relay::{Relay, RelayMessage};
 use overwatch_rs::services::state::{NoOperator, NoState};
@@ -66,7 +66,7 @@ where
     Backend::DaBlob: Debug + Send,
     Backend::Error: Error + Send + Sync,
     Backend::Settings: Clone,
-    N: NetworkAdapter<Blob = Backend::DaBlob, Attestation = ()> + Send + 'static,
+    N: NetworkAdapter<Blob = Backend::DaBlob> + Send + 'static,
     N::Settings: Clone,
     S: DaStorageAdapter<Blob = Backend::DaBlob, Attestation = ()> + Send + 'static,
 {
@@ -124,7 +124,7 @@ where
     Backend::Settings: Clone + Send + Sync + 'static,
     Backend::DaBlob: Debug + Send + Sync + 'static,
     Backend::Error: Error + Send + Sync + 'static,
-    N: NetworkAdapter<Blob = Backend::DaBlob, Attestation = ()> + Send + Sync + 'static,
+    N: NetworkAdapter<Blob = Backend::DaBlob> + Send + Sync + 'static,
     N::Settings: Clone + Send + Sync + 'static,
     S: DaStorageAdapter<Blob = Backend::DaBlob, Attestation = ()> + Send + Sync + 'static,
     S::Settings: Clone + Send + Sync + 'static,
@@ -173,27 +173,24 @@ where
             loop {
                 tokio::select! {
                     Some(blob) = blob_stream.next() => {
-                        match Self::handle_new_blob(&verifier,&storage_adapter, &blob).await {
+                        if let Err(err) =  Self::handle_new_blob(&verifier,&storage_adapter, &blob).await {
-                            Ok(attestation) => if let Err(err) = network_adapter.send_attestation(attestation).await {
+                            error!("Error handling blob {blob:?} due to {err:?}");
-                                error!("Error replying attestation {err:?}");
-                            },
-                            Err(err) => error!("Error handling blob {blob:?} due to {err:?}"),
                         }
                     }
                     Some(msg) = service_state.inbound_relay.recv() => {
-                            let DaVerifierMsg::AddBlob { blob, reply_channel } = msg;
+                        let DaVerifierMsg::AddBlob { blob, reply_channel } = msg;
-                            match Self::handle_new_blob(&verifier, &storage_adapter, &blob).await {
+                        match Self::handle_new_blob(&verifier, &storage_adapter, &blob).await {
-                                Ok(attestation) => if let Err(err) = reply_channel.send(Some(attestation)) {
+                            Ok(attestation) => if let Err(err) = reply_channel.send(Some(attestation)) {
+                                error!("Error replying attestation {err:?}");
+                            },
+                            Err(err) => {
+                                error!("Error handling blob {blob:?} due to {err:?}");
+                                if let Err(err) = reply_channel.send(None) {
                                     error!("Error replying attestation {err:?}");
-                                },
+                                }
-                                Err(err) => {
+                            },
-                                    error!("Error handling blob {blob:?} due to {err:?}");
+                        };
-                                    if let Err(err) = reply_channel.send(None) {
+                    }
-                                        error!("Error replying attestation {err:?}");
-                                    }
-                                },
-                            };
-                        }
                     Some(msg) = lifecycle_stream.next() => {
                         if Self::should_stop_service(msg).await {
                             break;

nomos-services/data-availability/verifier/src/network/adapters/libp2p.rs

@@ -1,107 +1,79 @@
 // std
-use futures::Stream;
+use std::fmt::Debug;
-use overwatch_rs::DynError;
 use std::marker::PhantomData;
 // crates
-
+use futures::Stream;
-// internal
+use kzgrs_backend::common::blob::DaBlob;
-use crate::network::NetworkAdapter;
+use libp2p::PeerId;
-use nomos_core::wire;
+use nomos_da_network_core::SubnetworkId;
-use nomos_network::backends::libp2p::{Command, Event, EventKind, Libp2p, Message, TopicHash};
+use nomos_da_network_service::backends::libp2p::validator::{
-use nomos_network::{NetworkMsg, NetworkService};
+    DaNetworkEvent, DaNetworkEventKind, DaNetworkValidatorBackend,
+};
+use nomos_da_network_service::NetworkService;
 use overwatch_rs::services::relay::OutboundRelay;
 use overwatch_rs::services::ServiceData;
-use serde::de::DeserializeOwned;
+use subnetworks_assignations::MembershipHandler;
-use serde::Serialize;
-use tokio_stream::wrappers::BroadcastStream;
 use tokio_stream::StreamExt;
-use tracing::debug;
+// internal
+use crate::network::NetworkAdapter;
 
 pub const NOMOS_DA_TOPIC: &str = "NomosDa";
 
-pub struct Libp2pAdapter<B, A> {
+pub struct Libp2pAdapter<M>
-    network_relay: OutboundRelay<<NetworkService<Libp2p> as ServiceData>::Message>,
-    _blob: PhantomData<B>,
-    _attestation: PhantomData<A>,
-}
-
-impl<B, A> Libp2pAdapter<B, A>
 where
-    B: Serialize + DeserializeOwned + Send + Sync + 'static,
+    M: MembershipHandler<NetworkId = SubnetworkId, Id = PeerId>
-    A: Serialize + DeserializeOwned + Send + Sync + 'static,
+        + Clone
+        + Debug
+        + Send
+        + Sync
+        + 'static,
 {
-    async fn stream_for<E: DeserializeOwned>(&self) -> Box<dyn Stream<Item = E> + Unpin + Send> {
+    network_relay:
-        let topic_hash = TopicHash::from_raw(NOMOS_DA_TOPIC);
+        OutboundRelay<<NetworkService<DaNetworkValidatorBackend<M>> as ServiceData>::Message>,
-        let (sender, receiver) = tokio::sync::oneshot::channel();
+    _membership: PhantomData<M>,
-        self.network_relay
-            .send(NetworkMsg::Subscribe {
-                kind: EventKind::Message,
-                sender,
-            })
-            .await
-            .expect("Network backend should be ready");
-        let receiver = receiver.await.unwrap();
-        Box::new(Box::pin(BroadcastStream::new(receiver).filter_map(
-            move |msg| match msg {
-                Ok(Event::Message(Message { topic, data, .. })) if topic == topic_hash => {
-                    match wire::deserialize::<E>(&data) {
-                        Ok(msg) => Some(msg),
-                        Err(e) => {
-                            debug!("Unrecognized message: {e}");
-                            None
-                        }
-                    }
-                }
-                _ => None,
-            },
-        )))
-    }
-
-    async fn send<E: Serialize>(&self, data: E) -> Result<(), DynError> {
-        let message = wire::serialize(&data)?.into_boxed_slice();
-        self.network_relay
-            .send(NetworkMsg::Process(Command::Broadcast {
-                topic: NOMOS_DA_TOPIC.to_string(),
-                message,
-            }))
-            .await
-            .map_err(|(e, _)| Box::new(e) as DynError)
-    }
 }
 
 #[async_trait::async_trait]
-impl<B, A> NetworkAdapter for Libp2pAdapter<B, A>
+impl<M> NetworkAdapter for Libp2pAdapter<M>
 where
-    B: Serialize + DeserializeOwned + Send + Sync + 'static,
+    M: MembershipHandler<NetworkId = SubnetworkId, Id = PeerId>
-    A: Serialize + DeserializeOwned + Send + Sync + 'static,
+        + Clone
+        + Debug
+        + Send
+        + Sync
+        + 'static,
 {
-    type Backend = Libp2p;
+    type Backend = DaNetworkValidatorBackend<M>;
     type Settings = ();
-    type Blob = B;
+    type Blob = DaBlob;
-    type Attestation = A;
 
     async fn new(
         _settings: Self::Settings,
         network_relay: OutboundRelay<<NetworkService<Self::Backend> as ServiceData>::Message>,
     ) -> Self {
-        network_relay
-            .send(NetworkMsg::Process(Command::Subscribe(
-                NOMOS_DA_TOPIC.to_string(),
-            )))
-            .await
-            .expect("Network backend should be ready");
         Self {
             network_relay,
-            _blob: Default::default(),
+            _membership: Default::default(),
-            _attestation: Default::default(),
         }
     }
 
     async fn blob_stream(&self) -> Box<dyn Stream<Item = Self::Blob> + Unpin + Send> {
-        self.stream_for::<Self::Blob>().await
+        let (sender, receiver) = tokio::sync::oneshot::channel();
-    }
+        self.network_relay
+            .send(nomos_da_network_service::DaNetworkMsg::Subscribe {
+                kind: DaNetworkEventKind::Verifying,
+                sender,
+            })
+            .await
+            .expect("Network backend should be ready");
 
-    async fn send_attestation(&self, attestation: Self::Attestation) -> Result<(), DynError> {
+        let receiver = receiver.await.expect("Blob stream should be received");
-        self.send(attestation).await
+
+        let stream = receiver.filter_map(move |msg| match msg {
+            DaNetworkEvent::Verifying(blob) => Some(*blob),
+            _ => None,
+        });
+
+        Box::new(Box::pin(stream))
     }
 }

nomos-services/data-availability/verifier/src/network/mod.rs

@@ -1,19 +1,17 @@
 pub mod adapters;
 
 use futures::Stream;
-use nomos_network::backends::NetworkBackend;
+use nomos_da_network_service::backends::NetworkBackend;
-use nomos_network::NetworkService;
+use nomos_da_network_service::NetworkService;
 use overwatch_rs::services::relay::OutboundRelay;
 use overwatch_rs::services::ServiceData;
-use overwatch_rs::DynError;
 
 #[async_trait::async_trait]
 pub trait NetworkAdapter {
-    type Backend: NetworkBackend + 'static;
+    type Backend: NetworkBackend + Send + 'static;
     type Settings;
 
     type Blob;
-    type Attestation;
 
     async fn new(
         settings: Self::Settings,
@@ -21,5 +19,4 @@ pub trait NetworkAdapter {
     ) -> Self;
 
     async fn blob_stream(&self) -> Box<dyn Stream<Item = Self::Blob> + Unpin + Send>;
-    async fn send_attestation(&self, attestation: Self::Attestation) -> Result<(), DynError>;
 }