feat: add support for justified block id in Beacon Node API (#5459)

* feat: add support for `justified` block id * fix: use hot db instead of archive db * fix: apply correct execution optimistic flag
ChainSafe · May 8, 2023 · c4a7fde · c4a7fde
1 parent 28efaea
commit c4a7fde
Show file tree

Hide file tree

Showing 2 changed files with 14 additions and 0 deletions.
diff --git a/packages/beacon-node/src/api/impl/beacon/blocks/utils.ts b/packages/beacon-node/src/api/impl/beacon/blocks/utils.ts
@@ -65,6 +65,14 @@ async function resolveBlockIdOrNull(
     };
   }
 
+  if (blockId === "justified") {
+    const justified = forkChoice.getJustifiedBlock();
+    return {
+      block: await db.block.get(fromHexString(justified.blockRoot)),
+      executionOptimistic: isOptimisticBlock(justified),
+    };
+  }
+
   let blockSummary;
   let getBlockByBlockArchive;
 

diff --git a/packages/beacon-node/test/unit/api/impl/beacon/blocks/utils.test.ts b/packages/beacon-node/test/unit/api/impl/beacon/blocks/utils.test.ts
@@ -71,6 +71,12 @@ describe("block api utils", function () {
       expect(dbStub.blockArchive.get).to.be.calledOnceWithExactly(expected);
     });
 
+    it("should resolve justified", async function () {
+      forkChoiceStub.getJustifiedBlock.returns(expectedSummary);
+      await resolveBlockId(forkChoiceStub, dbStub, "justified").catch(() => {});
+      expect(dbStub.block.get).to.be.calledOnceWithExactly(bufferEqualsMatcher(expectedBuffer));
+    });
+
     it("should resolve finalized block root", async function () {
       forkChoiceStub.getBlock.returns(expectedSummary);
       forkChoiceStub.getFinalizedBlock.returns(expectedSummary);