tendermint-rpc: Support order_by param in Tendermint v0.34 tx search

packages/tendermint-rpc/src/tendermint34/adaptor/requests.ts

@@ -89,6 +89,7 @@ interface RpcTxSearchParams {
   readonly prove?: boolean;
   readonly page?: string;
   readonly per_page?: string;
+  readonly order_by?: string;
 }
 function encodeTxSearchParams(params: requests.TxSearchParams): RpcTxSearchParams {
   return {
@@ -96,6 +97,7 @@ function encodeTxSearchParams(params: requests.TxSearchParams): RpcTxSearchParam
     prove: params.prove,
     page: may(Integer.encode, params.page),
     per_page: may(Integer.encode, params.per_page),
+    order_by: params.order_by,
   };
 }
 

packages/tendermint-rpc/src/tendermint34/requests.ts

@@ -174,6 +174,7 @@ export interface TxSearchParams {
   readonly prove?: boolean;
   readonly page?: number;
   readonly per_page?: number;
+  readonly order_by?: string;
 }
 
 export interface ValidatorsRequest {

packages/tendermint-rpc/src/tendermint34/tendermint34client.spec.ts

@@ -439,6 +439,41 @@ function defaultTestSuite(rpcFactory: () => RpcClient, expected: ExpectedValues)
       }
     });
 
+    it("returns transactions in ascending order by default", async () => {
+      // NOTE: The Tendermint docs claim the default ordering is "desc" but it is actually "asc"
+      // Docs: https://docs.tendermint.com/master/rpc/#/Info/tx_search
+      // Code: https://github.com/tendermint/tendermint/blob/v0.34.10/rpc/core/tx.go#L89
+      pendingWithoutTendermint();
+      const client = await Tendermint34Client.create(rpcFactory());
+
+      const query = buildQuery({ tags: [{ key: "app.key", value: key }] });
+
+      const s = await client.txSearch({ query: query });
+
+      expect(s.totalCount).toEqual(3);
+      s.txs.slice(1).reduce((lastHeight, { height }) => {
+        expect(height).toBeGreaterThanOrEqual(lastHeight);
+        return height;
+      }, s.txs[0].height);
+
+      client.disconnect();
+    });
+
+    it("can set the order", async () => {
+      pendingWithoutTendermint();
+      const client = await Tendermint34Client.create(rpcFactory());
+
+      const query = buildQuery({ tags: [{ key: "app.key", value: key }] });
+
+      const s1 = await client.txSearch({ query: query, order_by: "desc" });
+      const s2 = await client.txSearch({ query: query, order_by: "asc" });
+
+      expect(s1.totalCount).toEqual(s2.totalCount);
+      expect([...s1.txs].reverse()).toEqual(s2.txs);
+
+      client.disconnect();
+    });
+
     it("can paginate over txSearch results", async () => {
       pendingWithoutTendermint();
       const client = await Tendermint34Client.create(rpcFactory());

packages/tendermint-rpc/src/tendermint34/tendermint34client.ts

@@ -257,12 +257,7 @@ export class Tendermint34Client {
    */
   public async txSearch(params: requests.TxSearchParams): Promise<responses.TxSearchResponse> {
     const query: requests.TxSearchRequest = { params: params, method: requests.Method.TxSearch };
-    const resp = await this.doCall(query, this.p.encodeTxSearch, this.r.decodeTxSearch);
-    return {
-      ...resp,
-      // make sure we sort by height, as tendermint may be sorting by string value of the height
-      txs: [...resp.txs].sort((a, b) => a.height - b.height),
-    };
+    return this.doCall(query, this.p.encodeTxSearch, this.r.decodeTxSearch);
   }
 
   // this should paginate through all txSearch options to ensure it returns all results.
@@ -281,9 +276,6 @@ export class Tendermint34Client {
         done = true;
       }
     }
-    // make sure we sort by height, as tendermint may be sorting by string value of the height
-    // and the earlier items may be in a higher page than the later items
-    txs.sort((a, b) => a.height - b.height);
 
     return {
       totalCount: txs.length,