Fix getMultisig implementation

db-schema.graphql

@@ -1,7 +1,10 @@
 type Multisig {
   id: ID!
-  chainId: String!
-  address: String!
+  # The @search annotation allows us to query the list of multisigs and filter
+  # by (chainId, address) pairs. We use "hash" since we only need exact matches.
+  # See https://dgraph.io/docs/graphql/schema/directives/search/#string
+  chainId: String! @search(by: [hash])
+  address: String! @search(by: [hash])
   pubkeyJSON: String!
 }
 

lib/graphqlHelpers.ts

@@ -32,27 +32,46 @@ const createMultisig = async (multisig: DbAccount) => {
 };
 
 /**
- * Gets multisig pubkey from faundb
+ * This is the format returned by the graphQL API.
+ *
+ * Keep the format in sync with `GetMultisigAccountResponse` because
+ * we return the full object in the API. Right now address and chainId
+ * are somewhat unnecessary to query but still nice for debgging.
+ */
+interface MultisigFromQuery {
+  address: string;
+  chainId: string;
+  pubkeyJSON: string;
+}
+
+/**
+ * Gets multisig pubkey from DB
  *
  * @param {string} address A multisig address.
  * @param {string} chainId The chainId the multisig belongs to.
  * @return Returns async function that makes a request to the dgraph graphql endpoint
  */
-const getMultisig = async (address: string, chainId: string) => {
-  return requestGraphQlJson({
+async function getMultisig(
+  address: string,
+  chainId: string,
+): Promise<MultisigFromQuery | undefined> {
+  const result = await requestGraphQlJson({
     body: {
       query: `
-        query GetMultisig {
-          getMultisig(chainId: "${chainId}", address: "${address}") {
-            chainId
+        query MultisigsByAddressAndChainId {
+          queryMultisig(filter: {address: {eq: "${address}"}, chainId: {eq: "${chainId}"}}) {
             address
+            chainId
             pubkeyJSON
           }
         }
       `,
     },
   });
-};
+  const elements: [MultisigFromQuery] = result.data.queryMultisig;
+  const first = elements.find(() => true);
+  return first;
+}
 
 /**
  * Creates transaction record in dgraph

pages/api/chain/[chainId]/multisig/[multisigAddress]/index.ts

@@ -8,13 +8,13 @@ export default async function multisigAddressApi(req: NextApiRequest, res: NextA
         const multisigAddress = req.query.multisigAddress?.toString() || "";
         const chainId = req.query.chainId?.toString() || "";
         console.log("Function `getMultisig` invoked", multisigAddress, chainId);
-        const getRes = await getMultisig(multisigAddress, chainId);
-        if (!getRes.data.getMultisig) {
+        const multisig = await getMultisig(multisigAddress, chainId);
+        if (!multisig) {
           res.status(404).send("Multisig not found");
           return;
         }
-        console.log("success", getRes.data.getMultisig);
-        res.status(200).send(getRes.data.getMultisig);
+        console.log("success", multisig);
+        res.status(200).send(multisig);
         return;
         // eslint-disable-next-line @typescript-eslint/no-explicit-any
       } catch (err: any) {