Total mix stake accounting

clients/client-core/src/client/mix_traffic.rs

@@ -40,7 +40,7 @@ impl MixTrafficController {
     async fn on_messages(&mut self, mut mix_packets: Vec<MixPacket>) {
         debug_assert!(!mix_packets.is_empty());
 
-        let success = if mix_packets.len() == 1 {
+        let result = if mix_packets.len() == 1 {
             let mix_packet = mix_packets.pop().unwrap();
             self.gateway_client.send_mix_packet(mix_packet).await
         } else {
@@ -49,7 +49,7 @@ impl MixTrafficController {
                 .await
         };
 
-        match success {
+        match result {
             Err(e) => {
                 error!("Failed to send sphinx packet(s) to the gateway! - {:?}", e);
                 self.consecutive_gateway_failure_count += 1;

common/client-libs/gateway-client/src/client.rs

@@ -36,8 +36,7 @@ const DEFAULT_RECONNECTION_BACKOFF: Duration = Duration::from_secs(5);
 
 pub struct GatewayClient {
     authenticated: bool,
-    // TODO: This should be replaced by an actual bandwidth value, with 0 meaning no bandwidth
-    has_bandwidth: bool,
+    bandwidth_remaining: i64,
     gateway_address: String,
     gateway_identity: identity::PublicKey,
     local_identity: Arc<identity::KeyPair>,
@@ -72,7 +71,7 @@ impl GatewayClient {
     ) -> Self {
         GatewayClient {
             authenticated: false,
-            has_bandwidth: false,
+            bandwidth_remaining: 0,
             gateway_address,
             gateway_identity,
             local_identity,
@@ -117,7 +116,7 @@ impl GatewayClient {
 
         GatewayClient {
             authenticated: false,
-            has_bandwidth: false,
+            bandwidth_remaining: 0,
             gateway_address,
             gateway_identity,
             local_identity,
@@ -474,22 +473,29 @@ impl GatewayClient {
         )
         .ok_or(GatewayClientError::SerializeCredential)?
         .into();
-        self.has_bandwidth = match self.send_websocket_message(msg).await? {
-            ServerResponse::Bandwidth { status } => Ok(status),
+        self.bandwidth_remaining = match self.send_websocket_message(msg).await? {
+            ServerResponse::Bandwidth { available_total } => Ok(available_total),
             ServerResponse::Error { message } => Err(GatewayClientError::GatewayError(message)),
             _ => Err(GatewayClientError::UnexpectedResponse),
         }?;
         Ok(())
     }
 
+    fn estimate_required_bandwidth(&self, packets: &[MixPacket]) -> i64 {
+        packets
+            .iter()
+            .map(|packet| packet.sphinx_packet().len())
+            .sum::<usize>() as i64
+    }
+
     pub async fn batch_send_mix_packets(
         &mut self,
         packets: Vec<MixPacket>,
     ) -> Result<(), GatewayClientError> {
         if !self.authenticated {
             return Err(GatewayClientError::NotAuthenticated);
         }
-        if !self.has_bandwidth {
+        if self.estimate_required_bandwidth(&packets) < self.bandwidth_remaining {
             return Err(GatewayClientError::NotEnoughBandwidth);
         }
         if !self.connection.is_established() {
@@ -550,7 +556,7 @@ impl GatewayClient {
         if !self.authenticated {
             return Err(GatewayClientError::NotAuthenticated);
         }
-        if !self.has_bandwidth {
+        if (mix_packet.sphinx_packet().len() as i64) > self.bandwidth_remaining {
             return Err(GatewayClientError::NotEnoughBandwidth);
         }
         if !self.connection.is_established() {
@@ -598,7 +604,7 @@ impl GatewayClient {
         if !self.authenticated {
             return Err(GatewayClientError::NotAuthenticated);
         }
-        if !self.has_bandwidth {
+        if self.bandwidth_remaining <= 0 {
             return Err(GatewayClientError::NotEnoughBandwidth);
         }
         if self.connection.is_partially_delegated() {

common/client-libs/validator-client/src/client.rs

@@ -10,6 +10,8 @@ use mixnet_contract::StateParams;
 
 use crate::{validator_api, ValidatorClientError};
 use coconut_interface::{BlindSignRequestBody, BlindedSignatureResponse, VerificationKeyResponse};
+#[cfg(feature = "nymd-client")]
+use mixnet_contract::RawDelegationData;
 use mixnet_contract::{GatewayBond, MixNodeBond};
 use url::Url;
 
@@ -180,6 +182,20 @@ impl<C> Client<C> {
         Ok(self.nymd.get_state_params().await?)
     }
 
+    pub async fn get_total_mix_stake(&self) -> Result<u128, ValidatorClientError>
+    where
+        C: CosmWasmClient + Sync,
+    {
+        Ok(self.nymd.get_total_mix_stake().await?.u128())
+    }
+
+    pub async fn get_total_gateway_stake(&self) -> Result<u128, ValidatorClientError>
+    where
+        C: CosmWasmClient + Sync,
+    {
+        Ok(self.nymd.get_total_gateway_stake().await?.u128())
+    }
+
     // basically handles paging for us
     pub async fn get_all_nymd_mixnodes(&self) -> Result<Vec<MixNodeBond>, ValidatorClientError>
     where
@@ -227,7 +243,7 @@ impl<C> Client<C> {
         Ok(gateways)
     }
 
-    pub async fn get_all_nymd_mixnode_delegations(
+    pub async fn get_all_nymd_single_mixnode_delegations(
         &self,
         identity: mixnet_contract::IdentityKey,
     ) -> Result<Vec<mixnet_contract::Delegation>, ValidatorClientError>
@@ -257,6 +273,34 @@ impl<C> Client<C> {
         Ok(delegations)
     }
 
+    pub async fn get_all_nymd_mixnode_delegations(
+        &self,
+    ) -> Result<Vec<mixnet_contract::UnpackedDelegation<RawDelegationData>>, ValidatorClientError>
+    where
+        C: CosmWasmClient + Sync,
+    {
+        let mut delegations = Vec::new();
+        let mut start_after = None;
+        loop {
+            let mut paged_response = self
+                .nymd
+                .get_all_mix_delegations_paged(
+                    start_after.take(),
+                    self.mixnode_delegations_page_limit,
+                )
+                .await?;
+            delegations.append(&mut paged_response.delegations);
+
+            if let Some(start_after_res) = paged_response.start_next_after {
+                start_after = Some(start_after_res)
+            } else {
+                break;
+            }
+        }
+
+        Ok(delegations)
+    }
+
     pub async fn get_all_nymd_reverse_mixnode_delegations(
         &self,
         delegation_owner: &cosmrs::AccountId,
@@ -309,7 +353,7 @@ impl<C> Client<C> {
         Ok(delegations)
     }
 
-    pub async fn get_all_nymd_gateway_delegations(
+    pub async fn get_all_nymd_single_gateway_delegations(
         &self,
         identity: mixnet_contract::IdentityKey,
     ) -> Result<Vec<mixnet_contract::Delegation>, ValidatorClientError>
@@ -339,6 +383,34 @@ impl<C> Client<C> {
         Ok(delegations)
     }
 
+    pub async fn get_all_nymd_gateway_delegations(
+        &self,
+    ) -> Result<Vec<mixnet_contract::UnpackedDelegation<RawDelegationData>>, ValidatorClientError>
+    where
+        C: CosmWasmClient + Sync,
+    {
+        let mut delegations = Vec::new();
+        let mut start_after = None;
+        loop {
+            let mut paged_response = self
+                .nymd
+                .get_all_gateway_delegations(
+                    start_after.take(),
+                    self.gateway_delegations_page_limit,
+                )
+                .await?;
+            delegations.append(&mut paged_response.delegations);
+
+            if let Some(start_after_res) = paged_response.start_next_after {
+                start_after = Some(start_after_res)
+            } else {
+                break;
+            }
+        }
+
+        Ok(delegations)
+    }
+
     pub async fn get_all_nymd_reverse_gateway_delegations(
         &self,
         delegation_owner: &cosmrs::AccountId,

common/client-libs/validator-client/src/nymd/mod.rs

@@ -12,13 +12,13 @@ use crate::nymd::wallet::DirectSecp256k1HdWallet;
 use cosmrs::rpc::endpoint::broadcast;
 use cosmrs::rpc::{Error as TendermintRpcError, HttpClientUrl};
 
-use cosmwasm_std::Coin;
+use cosmwasm_std::{Coin, Uint128};
 use mixnet_contract::{
     Addr, Delegation, ExecuteMsg, Gateway, GatewayOwnershipResponse, IdentityKey,
-    LayerDistribution, MixNode, MixOwnershipResponse, PagedGatewayDelegationsResponse,
-    PagedGatewayResponse, PagedMixDelegationsResponse, PagedMixnodeResponse,
-    PagedReverseGatewayDelegationsResponse, PagedReverseMixDelegationsResponse, QueryMsg,
-    StateParams,
+    LayerDistribution, MixNode, MixOwnershipResponse, PagedAllDelegationsResponse,
+    PagedGatewayDelegationsResponse, PagedGatewayResponse, PagedMixDelegationsResponse,
+    PagedMixnodeResponse, PagedReverseGatewayDelegationsResponse,
+    PagedReverseMixDelegationsResponse, QueryMsg, RawDelegationData, StateParams,
 };
 use serde::Serialize;
 use std::collections::HashMap;
@@ -198,6 +198,26 @@ impl<C> NymdClient<C> {
             .await
     }
 
+    pub async fn get_total_mix_stake(&self) -> Result<Uint128, NymdError>
+    where
+        C: CosmWasmClient + Sync,
+    {
+        let request = QueryMsg::GetTotalMixStake {};
+        self.client
+            .query_contract_smart(self.contract_address()?, &request)
+            .await
+    }
+
+    pub async fn get_total_gateway_stake(&self) -> Result<Uint128, NymdError>
+    where
+        C: CosmWasmClient + Sync,
+    {
+        let request = QueryMsg::GetTotalGatewayStake {};
+        self.client
+            .query_contract_smart(self.contract_address()?, &request)
+            .await
+    }
+
     /// Checks whether there is a bonded mixnode associated with the provided client's address
     pub async fn owns_mixnode(&self, address: &AccountId) -> Result<bool, NymdError>
     where
@@ -283,6 +303,25 @@ impl<C> NymdClient<C> {
             .await
     }
 
+    /// Gets list of all mixnode delegations on particular page.
+    pub async fn get_all_mix_delegations_paged(
+        &self,
+        // I really hate mixing cosmwasm and cosmos-sdk types here...
+        start_after: Option<Vec<u8>>,
+        page_limit: Option<u32>,
+    ) -> Result<PagedAllDelegationsResponse<RawDelegationData>, NymdError>
+    where
+        C: CosmWasmClient + Sync,
+    {
+        let request = QueryMsg::GetAllMixDelegations {
+            start_after,
+            limit: page_limit,
+        };
+        self.client
+            .query_contract_smart(self.contract_address()?, &request)
+            .await
+    }
+
     /// Gets list of all the mixnodes on which a particular address delegated.
     pub async fn get_reverse_mix_delegations_paged(
         &self,
@@ -321,7 +360,7 @@ impl<C> NymdClient<C> {
             .await
     }
 
-    /// Gets list of all delegations towards particular mixnode on particular page.
+    /// Gets list of all delegations towards particular gateway on particular page.
     pub async fn get_gateway_delegations(
         &self,
         gateway_identity: IdentityKey,
@@ -341,6 +380,24 @@ impl<C> NymdClient<C> {
             .await
     }
 
+    /// Gets list of all gateway delegations on particular page.
+    pub async fn get_all_gateway_delegations(
+        &self,
+        start_after: Option<Vec<u8>>,
+        page_limit: Option<u32>,
+    ) -> Result<PagedAllDelegationsResponse<RawDelegationData>, NymdError>
+    where
+        C: CosmWasmClient + Sync,
+    {
+        let request = QueryMsg::GetAllGatewayDelegations {
+            start_after,
+            limit: page_limit,
+        };
+        self.client
+            .query_contract_smart(self.contract_address()?, &request)
+            .await
+    }
+
     /// Gets list of all the gateways on which a particular address delegated.
     pub async fn get_reverse_gateway_delegations_paged(
         &self,

common/credentials/src/bandwidth.rs

@@ -12,7 +12,7 @@ use crate::error::Error;
 use crate::utils::{obtain_aggregate_signature, prepare_credential_for_spending};
 use coconut_interface::{hash_to_scalar, Credential, Parameters, Signature, VerificationKey};
 
-const BANDWIDTH_VALUE: u64 = 1024 * 1024; // 1 MB
+const BANDWIDTH_VALUE: u64 = 10 * 1024 * 1024 * 1024; // 10 GB
 
 pub const PUBLIC_ATTRIBUTES: u32 = 1;
 pub const PRIVATE_ATTRIBUTES: u32 = 1;

common/mixnet-contract/src/delegation.rs

@@ -7,7 +7,24 @@ use schemars::JsonSchema;
 use serde::{Deserialize, Serialize};
 use std::fmt::Display;
 
-#[derive(Debug, Deserialize, PartialEq, Serialize)]
+#[derive(Clone, Debug, Deserialize, PartialEq, Serialize, JsonSchema)]
+pub struct UnpackedDelegation<T> {
+    pub owner: Addr,
+    pub node_identity: IdentityKey,
+    pub delegation_data: T,
+}
+
+impl<T> UnpackedDelegation<T> {
+    pub fn new(owner: Addr, node_identity: IdentityKey, delegation_data: T) -> Self {
+        UnpackedDelegation {
+            owner,
+            node_identity,
+            delegation_data,
+        }
+    }
+}
+
+#[derive(Clone, Debug, Deserialize, PartialEq, Serialize, JsonSchema)]
 pub struct RawDelegationData {
     pub amount: Uint128,
     pub block_height: u64,
@@ -144,3 +161,18 @@ impl PagedReverseGatewayDelegationsResponse {
         }
     }
 }
+
+#[derive(Clone, Debug, Deserialize, PartialEq, Serialize, JsonSchema)]
+pub struct PagedAllDelegationsResponse<T> {
+    pub delegations: Vec<UnpackedDelegation<T>>,
+    pub start_next_after: Option<Vec<u8>>,
+}
+
+impl<T> PagedAllDelegationsResponse<T> {
+    pub fn new(delegations: Vec<UnpackedDelegation<T>>, start_next_after: Option<Vec<u8>>) -> Self {
+        PagedAllDelegationsResponse {
+            delegations,
+            start_next_after,
+        }
+    }
+}

common/mixnet-contract/src/gateway.rs

@@ -59,6 +59,10 @@ impl GatewayBond {
     pub fn gateway(&self) -> &Gateway {
         &self.gateway
     }
+
+    pub fn total_delegation(&self) -> Coin {
+        self.total_delegation.clone()
+    }
 }
 
 impl PartialOrd for GatewayBond {