Add proto_array fork choice (#804)

* Start implementing proto_array * Add progress * Add unfinished progress * Add further progress * Add progress * Add tree filtering * Add half-finished modifications * Add refactored version * Tidy, add incomplete LmdGhost impl * Move impls in LmdGhost trait def * Remove old reduced_tree fork choice * Combine two functions in to `compute_deltas` * Start testing * Add more compute_deltas tests * Add fork choice testing * Add more fork choice testing * Add more fork choice tests * Add more testing to proto-array * Remove old tests * Modify tests * Add more tests * Add more testing * Add comments and fixes * Re-organise crate * Tidy, finish pruning tests * Add ssz encoding, other pub fns * Rename lmd_ghost > proto_array_fork_choice * Integrate proto_array into lighthouse * Add first pass at fixing filter * Clean out old comments * Add more comments * Attempt to fix prune error * Adjust TODO * Fix test compile errors * Add extra justification change check * Update cargo.lock * Fix fork choice test compile errors * Most remove ffg_update_required * Fix bug with epoch of attestation votes * Start adding new test format * Make fork choice tests declarative * Create test def concept * Move test defs into crate * Add binary, re-org crate * Shuffle files * Start adding ffg tests * Add more fork choice tests * Add fork choice JSON dumping * Add more detail to best node error * Ensure fin+just checkpoints from from same block * Rename JustificationManager * Move checkpoint manager into own file * Tidy * Add targetted logging for sneaky sync bug * Fix justified balances bug * Add cache metrics * Add metrics for log levels * Fix bug in checkpoint manager * Fix compile error in fork choice tests * Ignore duplicate blocks in fork choice * Add block to fock choice before db * Rename on_new_block fn * Fix spec inconsistency in `CheckpointManager` * Remove BlockRootTree * Remove old reduced_tree code fragment * Add API endpoint for fork choice * Add more ffg tests * Remove block_root_tree reminents * Ensure effective balances are used * Remove old debugging code, fix API fault * Add check to ensure parent block is in fork choice * Update readme dates * Fix readme * Tidy checkpoint manager * Remove fork choice yaml files from repo * Remove fork choice yaml from repo * General tidy * Address majority of Michael's comments * Tidy bin/lib business * Remove dangling file * Undo changes for rpc/handler from master * Revert "Undo changes for rpc/handler from master" This reverts commit 876edff0e4a501aafbb47113454852826dcc24e8. Co-authored-by: Age Manning <Age@AgeManning.com>
2020-01-29 15:05:00 +11:00
parent cd401147ea
commit b771bbb60c
48 changed files with 3469 additions and 2332 deletions
@@ -0,0 +1,15 @@
+use crate::response_builder::ResponseBuilder;
+use crate::ApiResult;
+use beacon_chain::{BeaconChain, BeaconChainTypes};
+use hyper::{Body, Request};
+use std::sync::Arc;
+
+/// Returns the `proto_array` fork choice struct, encoded as JSON.
+///
+/// Useful for debugging or advanced inspection of the chain.
+pub fn get_fork_choice<T: BeaconChainTypes>(
+    req: Request<Body>,
+    beacon_chain: Arc<BeaconChain<T>>,
+) -> ApiResult {
+    ResponseBuilder::new(&req)?.body_no_ssz(&*beacon_chain.fork_choice.core_proto_array())
+}
@@ -4,6 +4,7 @@ mod macros;
 extern crate lazy_static;
 extern crate network as client_network;

+mod advanced;
 mod beacon;
 pub mod config;
 mod consensus;
@@ -1,6 +1,6 @@
 use crate::{
-    beacon, consensus, error::ApiError, helpers, metrics, network, node, spec, validator, BoxFut,
-    NetworkChannel,
+    advanced, beacon, consensus, error::ApiError, helpers, metrics, network, node, spec, validator,
+    BoxFut, NetworkChannel,
 };
 use beacon_chain::{BeaconChain, BeaconChainTypes};
 use client_network::Service as NetworkService;
@@ -147,6 +147,11 @@ pub fn route<T: BeaconChainTypes>(
                into_boxfut(spec::get_eth2_config::<T>(req, eth2_config))
            }

+            // Methods for advanced parameters
+            (&Method::GET, "/advanced/fork_choice") => {
+                into_boxfut(advanced::get_fork_choice::<T>(req, beacon_chain))
+            }
+
            (&Method::GET, "/metrics") => into_boxfut(metrics::get_prometheus::<T>(
                req,
                beacon_chain,
@@ -792,6 +792,30 @@ fn get_committees() {
    assert_eq!(result, expected, "result should be as expected");
 }

+#[test]
+fn get_fork_choice() {
+    let mut env = build_env();
+
+    let node = build_node(&mut env, testing_client_config());
+    let remote_node = node.remote_node().expect("should produce remote node");
+
+    let fork_choice = env
+        .runtime()
+        .block_on(remote_node.http.advanced().get_fork_choice())
+        .expect("should not error when getting fork choice");
+
+    assert_eq!(
+        fork_choice,
+        *node
+            .client
+            .beacon_chain()
+            .expect("node should have beacon chain")
+            .fork_choice
+            .core_proto_array(),
+        "result should be as expected"
+    );
+}
+
 fn compare_validator_response<T: EthSpec>(
    state: &BeaconState<T>,
    response: &ValidatorResponse,