Add Deneb readiness logging (#5074)

beacon_node/beacon_chain/src/capella_readiness.rs

@@ -1,5 +1,4 @@
-//! Provides tools for checking if a node is ready for the Capella upgrade and following merge
-//! transition.
+//! Provides tools for checking if a node is ready for the Capella upgrade.
 
 use crate::{BeaconChain, BeaconChainTypes};
 use execution_layer::http::{

beacon_node/beacon_chain/src/deneb_readiness.rs

@@ -0,0 +1,121 @@
+//! Provides tools for checking if a node is ready for the Deneb upgrade.
+
+use crate::{BeaconChain, BeaconChainTypes};
+use execution_layer::http::{
+    ENGINE_FORKCHOICE_UPDATED_V3, ENGINE_GET_PAYLOAD_V3, ENGINE_NEW_PAYLOAD_V3,
+};
+use serde::{Deserialize, Serialize};
+use std::fmt;
+use std::time::Duration;
+use types::*;
+
+/// The time before the Deneb fork when we will start issuing warnings about preparation.
+use super::merge_readiness::SECONDS_IN_A_WEEK;
+pub const DENEB_READINESS_PREPARATION_SECONDS: u64 = SECONDS_IN_A_WEEK * 2;
+pub const ENGINE_CAPABILITIES_REFRESH_INTERVAL: u64 = 300;
+
+#[derive(Debug, Serialize, Deserialize)]
+#[serde(rename_all = "snake_case")]
+#[serde(tag = "type")]
+pub enum DenebReadiness {
+    /// The execution engine is deneb-enabled (as far as we can tell)
+    Ready,
+    /// We are connected to an execution engine which doesn't support the V3 engine api methods
+    V3MethodsNotSupported { error: String },
+    /// The transition configuration with the EL failed, there might be a problem with
+    /// connectivity, authentication or a difference in configuration.
+    ExchangeCapabilitiesFailed { error: String },
+    /// The user has not configured an execution endpoint
+    NoExecutionEndpoint,
+}
+
+impl fmt::Display for DenebReadiness {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        match self {
+            DenebReadiness::Ready => {
+                write!(f, "This node appears ready for Deneb.")
+            }
+            DenebReadiness::ExchangeCapabilitiesFailed { error } => write!(
+                f,
+                "Could not exchange capabilities with the \
+                    execution endpoint: {}",
+                error
+            ),
+            DenebReadiness::NoExecutionEndpoint => write!(
+                f,
+                "The --execution-endpoint flag is not specified, this is a \
+                    requirement post-merge"
+            ),
+            DenebReadiness::V3MethodsNotSupported { error } => write!(
+                f,
+                "Execution endpoint does not support Deneb methods: {}",
+                error
+            ),
+        }
+    }
+}
+
+impl<T: BeaconChainTypes> BeaconChain<T> {
+    /// Returns `true` if deneb epoch is set and Deneb fork has occurred or will
+    /// occur within `DENEB_READINESS_PREPARATION_SECONDS`
+    pub fn is_time_to_prepare_for_deneb(&self, current_slot: Slot) -> bool {
+        if let Some(deneb_epoch) = self.spec.deneb_fork_epoch {
+            let deneb_slot = deneb_epoch.start_slot(T::EthSpec::slots_per_epoch());
+            let deneb_readiness_preparation_slots =
+                DENEB_READINESS_PREPARATION_SECONDS / self.spec.seconds_per_slot;
+            // Return `true` if Deneb has happened or is within the preparation time.
+            current_slot + deneb_readiness_preparation_slots > deneb_slot
+        } else {
+            // The Deneb fork epoch has not been defined yet, no need to prepare.
+            false
+        }
+    }
+
+    /// Attempts to connect to the EL and confirm that it is ready for capella.
+    pub async fn check_deneb_readiness(&self) -> DenebReadiness {
+        if let Some(el) = self.execution_layer.as_ref() {
+            match el
+                .get_engine_capabilities(Some(Duration::from_secs(
+                    ENGINE_CAPABILITIES_REFRESH_INTERVAL,
+                )))
+                .await
+            {
+                Err(e) => {
+                    // The EL was either unreachable or responded with an error
+                    DenebReadiness::ExchangeCapabilitiesFailed {
+                        error: format!("{:?}", e),
+                    }
+                }
+                Ok(capabilities) => {
+                    let mut missing_methods = String::from("Required Methods Unsupported:");
+                    let mut all_good = true;
+                    if !capabilities.get_payload_v3 {
+                        missing_methods.push(' ');
+                        missing_methods.push_str(ENGINE_GET_PAYLOAD_V3);
+                        all_good = false;
+                    }
+                    if !capabilities.forkchoice_updated_v3 {
+                        missing_methods.push(' ');
+                        missing_methods.push_str(ENGINE_FORKCHOICE_UPDATED_V3);
+                        all_good = false;
+                    }
+                    if !capabilities.new_payload_v3 {
+                        missing_methods.push(' ');
+                        missing_methods.push_str(ENGINE_NEW_PAYLOAD_V3);
+                        all_good = false;
+                    }
+
+                    if all_good {
+                        DenebReadiness::Ready
+                    } else {
+                        DenebReadiness::V3MethodsNotSupported {
+                            error: missing_methods,
+                        }
+                    }
+                }
+            }
+        } else {
+            DenebReadiness::NoExecutionEndpoint
+        }
+    }
+}

beacon_node/beacon_chain/src/lib.rs

@@ -18,6 +18,7 @@ pub mod canonical_head;
 pub mod capella_readiness;
 pub mod chain_config;
 pub mod data_availability_checker;
+pub mod deneb_readiness;
 mod early_attester_cache;
 mod errors;
 pub mod eth1_chain;

beacon_node/client/src/notifier.rs

@@ -1,6 +1,7 @@
 use crate::metrics;
 use beacon_chain::{
     capella_readiness::CapellaReadiness,
+    deneb_readiness::DenebReadiness,
     merge_readiness::{GenesisExecutionPayloadStatus, MergeConfig, MergeReadiness},
     BeaconChain, BeaconChainTypes, ExecutionStatus,
 };
@@ -319,6 +320,7 @@ pub fn spawn_notifier<T: BeaconChainTypes>(
             eth1_logging(&beacon_chain, &log);
             merge_readiness_logging(current_slot, &beacon_chain, &log).await;
             capella_readiness_logging(current_slot, &beacon_chain, &log).await;
+            deneb_readiness_logging(current_slot, &beacon_chain, &log).await;
         }
     };
 
@@ -356,8 +358,8 @@ async fn merge_readiness_logging<T: BeaconChainTypes>(
     }
 
     if merge_completed && !has_execution_layer {
+        // Logging of the EE being offline is handled in the other readiness logging functions.
         if !beacon_chain.is_time_to_prepare_for_capella(current_slot) {
-            // logging of the EE being offline is handled in `capella_readiness_logging()`
             error!(
                 log,
                 "Execution endpoint required";
@@ -445,12 +447,15 @@ async fn capella_readiness_logging<T: BeaconChainTypes>(
     }
 
     if capella_completed && !has_execution_layer {
-        error!(
-            log,
-            "Execution endpoint required";
-            "info" => "you need a Capella enabled execution engine to validate blocks, see: \
-                       https://lighthouse-book.sigmaprime.io/merge-migration.html"
-        );
+        // Logging of the EE being offline is handled in the other readiness logging functions.
+        if !beacon_chain.is_time_to_prepare_for_deneb(current_slot) {
+            error!(
+                log,
+                "Execution endpoint required";
+                "info" => "you need a Capella enabled execution engine to validate blocks, see: \
+                           https://lighthouse-book.sigmaprime.io/merge-migration.html"
+            );
+        }
         return;
     }
 
@@ -479,6 +484,65 @@ async fn capella_readiness_logging<T: BeaconChainTypes>(
     }
 }
 
+/// Provides some helpful logging to users to indicate if their node is ready for Deneb
+async fn deneb_readiness_logging<T: BeaconChainTypes>(
+    current_slot: Slot,
+    beacon_chain: &BeaconChain<T>,
+    log: &Logger,
+) {
+    let deneb_completed = beacon_chain
+        .canonical_head
+        .cached_head()
+        .snapshot
+        .beacon_block
+        .message()
+        .body()
+        .execution_payload()
+        .map_or(false, |payload| payload.blob_gas_used().is_ok());
+
+    let has_execution_layer = beacon_chain.execution_layer.is_some();
+
+    if deneb_completed && has_execution_layer
+        || !beacon_chain.is_time_to_prepare_for_deneb(current_slot)
+    {
+        return;
+    }
+
+    if deneb_completed && !has_execution_layer {
+        error!(
+            log,
+            "Execution endpoint required";
+            "info" => "you need a Deneb enabled execution engine to validate blocks, see: \
+                       https://lighthouse-book.sigmaprime.io/merge-migration.html"
+        );
+        return;
+    }
+
+    match beacon_chain.check_deneb_readiness().await {
+        DenebReadiness::Ready => {
+            info!(
+                log,
+                "Ready for Deneb";
+                "info" => "ensure the execution endpoint is updated to the latest Deneb/Cancun release"
+            )
+        }
+        readiness @ DenebReadiness::ExchangeCapabilitiesFailed { error: _ } => {
+            error!(
+                log,
+                "Not ready for Deneb";
+                "hint" => "the execution endpoint may be offline",
+                "info" => %readiness,
+            )
+        }
+        readiness => warn!(
+            log,
+            "Not ready for Deneb";
+            "hint" => "try updating the execution endpoint",
+            "info" => %readiness,
+        ),
+    }
+}
+
 async fn genesis_execution_payload_logging<T: BeaconChainTypes>(
     beacon_chain: &BeaconChain<T>,
     log: &Logger,