From 549ead9ac5bacfee3edcdc542c41d20c08475ee5 Mon Sep 17 00:00:00 2001
From: Nico Flaig <nflaig@protonmail.com>
Date: Wed, 30 Oct 2024 09:33:59 +0000
Subject: [PATCH] feat: add keymanager endpoint to retrieve proposer config

---
 packages/api/src/keymanager/routes.ts         | 33 +++++++++++++++++++
 packages/api/test/unit/keymanager/testData.ts | 15 +++++++++
 .../cli/src/cmds/validator/keymanager/impl.ts |  4 +++
 3 files changed, 52 insertions(+)

diff --git a/packages/api/src/keymanager/routes.ts b/packages/api/src/keymanager/routes.ts
index 0db096d14e83..f91beccce804 100644
--- a/packages/api/src/keymanager/routes.ts
+++ b/packages/api/src/keymanager/routes.ts
@@ -109,6 +109,17 @@ export type SignerDefinition = {
 
 export type RemoteSignerDefinition = Pick<SignerDefinition, "pubkey" | "url">;
 
+export type ProposerConfig = {
+  graffiti?: string;
+  strictFeeRecipientCheck?: boolean;
+  feeRecipient?: string;
+  builder?: {
+    gasLimit?: number;
+    selection?: string;
+    boostFactor?: bigint;
+  };
+};
+
 /**
  * JSON serialized representation of a single keystore in EIP-2335: BLS12-381 Keystore format.
  * ```
@@ -356,6 +367,15 @@ export type Endpoints = {
     EmptyMeta
   >;
 
+  getProposerConfig: Endpoint<
+    // ⏎
+    "GET",
+    {pubkey: PubkeyHex},
+    {params: {pubkey: string}},
+    ProposerConfig,
+    EmptyMeta
+  >;
+
   /**
    * Create a signed voluntary exit message for an active validator, identified by a public key known to the validator
    * client. This endpoint returns a `SignedVoluntaryExit` object, which can be used to initiate voluntary exit via the
@@ -635,6 +655,19 @@ export function getDefinitions(_config: ChainForkConfig): RouteDefinitions<Endpo
       resp: EmptyResponseCodec,
     },
 
+    getProposerConfig: {
+      url: "/eth/v0/validator/{pubkey}/proposer_config",
+      method: "GET",
+      req: {
+        writeReq: ({pubkey}) => ({params: {pubkey}}),
+        parseReq: ({params: {pubkey}}) => ({pubkey}),
+        schema: {
+          params: {pubkey: Schema.StringRequired},
+        },
+      },
+      resp: JsonOnlyResponseCodec,
+    },
+
     signVoluntaryExit: {
       url: "/eth/v1/validator/{pubkey}/voluntary_exit",
       method: "POST",
diff --git a/packages/api/test/unit/keymanager/testData.ts b/packages/api/test/unit/keymanager/testData.ts
index bd37798c4685..d9eb4eaa0da1 100644
--- a/packages/api/test/unit/keymanager/testData.ts
+++ b/packages/api/test/unit/keymanager/testData.ts
@@ -112,4 +112,19 @@ export const testData: GenericServerTestCases<Endpoints> = {
     args: {pubkey: pubkeyRand},
     res: undefined,
   },
+  getProposerConfig: {
+    args: {pubkey: pubkeyRand},
+    res: {
+      data: {
+        graffiti: "graffiti",
+        strictFeeRecipientCheck: false,
+        feeRecipient: "0xaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
+        builder: {
+          gasLimit: 30000000,
+          selection: "maxprofit",
+          boostFactor: BigInt(50),
+        },
+      },
+    },
+  },
 };
diff --git a/packages/cli/src/cmds/validator/keymanager/impl.ts b/packages/cli/src/cmds/validator/keymanager/impl.ts
index b4233f3162cd..550640cc1c7e 100644
--- a/packages/cli/src/cmds/validator/keymanager/impl.ts
+++ b/packages/cli/src/cmds/validator/keymanager/impl.ts
@@ -364,6 +364,10 @@ export class KeymanagerApi implements Api {
     return {status: 204};
   }
 
+  async getProposerConfig({pubkey}: {pubkey: PubkeyHex}): ReturnType<Api["getProposerConfig"]> {
+    return {data: this.validator.validatorStore.getProposerConfig(pubkey) ?? {}};
+  }
+
   async signVoluntaryExit({pubkey, epoch}: {pubkey: PubkeyHex; epoch?: Epoch}): ReturnType<Api["signVoluntaryExit"]> {
     if (!isValidatePubkeyHex(pubkey)) {
       throw new ApiError(400, `Invalid pubkey ${pubkey}`);