feat: switches to REST for calling nwaku messages/subscription endpoints

This commit modifies functions in ServiceNode to use the REST API
instead of JSON RPC when reading messages for a pubsub topic or
content topic, and when ensuring a nwaku node is subscribed to a
pubsub topic. Also modifies default Docker params to enable the
rest API and provide a port.

packages/tests/src/lib/dockerode.ts

@@ -3,7 +3,7 @@ import fs from "fs";
 import { Logger } from "@waku/utils";
 import Docker from "dockerode";
 
-import { Args } from "../types.js";
+import { Args, Ports } from "../types.js";
 
 const log = new Logger("test:docker");
 
@@ -87,12 +87,12 @@ export default class Dockerode {
   }
 
   async startContainer(
-    ports: number[],
+    ports: Ports,
     args: Args,
     logPath: string,
     wakuServiceNodeParams?: string
   ): Promise<Docker.Container> {
-    const [rpcPort, tcpPort, websocketPort, discv5UdpPort] = ports;
+    const { rpcPort, restPort, tcpPort, websocketPort, discv5UdpPort } = ports;
 
     await this.confirmImageExistsOrPull();
 
@@ -109,6 +109,7 @@ export default class Dockerode {
       HostConfig: {
         AutoRemove: true,
         PortBindings: {
+          [`${restPort}/tcp`]: [{ HostPort: restPort.toString() }],
           [`${rpcPort}/tcp`]: [{ HostPort: rpcPort.toString() }],
           [`${tcpPort}/tcp`]: [{ HostPort: tcpPort.toString() }],
           [`${websocketPort}/tcp`]: [{ HostPort: websocketPort.toString() }],
@@ -118,6 +119,7 @@ export default class Dockerode {
         }
       },
       ExposedPorts: {
+        [`${restPort}/tcp`]: {},
         [`${rpcPort}/tcp`]: {},
         [`${tcpPort}/tcp`]: {},
         [`${websocketPort}/tcp`]: {},

packages/tests/src/lib/service_node.ts

@@ -13,7 +13,8 @@ import {
   KeyPair,
   LogLevel,
   MessageRpcQuery,
-  MessageRpcResponse
+  MessageRpcResponse,
+  Ports
 } from "../types.js";
 import { existsAsync, mkdirAsync, openAsync } from "../utils/async_fs.js";
 import { delay } from "../utils/delay.js";
@@ -49,6 +50,7 @@ export class ServiceNode {
   private websocketPort?: number;
   private readonly logPath: string;
   private rpcPort?: number;
+  private restPort?: number;
 
   /**
    * Convert a [[WakuMessage]] to a [[WakuRelayMessage]]. The latter is used
@@ -116,10 +118,16 @@ export class ServiceNode {
           // we also randomize the first port that portfinder will try
           const startPort = Math.floor(Math.random() * (65535 - 1025) + 1025);
 
-          const ports: number[] = await new Promise((resolve, reject) => {
-            portfinder.getPorts(4, { port: startPort }, (err, ports) => {
+          const ports: Ports = await new Promise((resolve, reject) => {
+            portfinder.getPorts(5, { port: startPort }, (err, ports) => {
               if (err) reject(err);
-              resolve(ports);
+              resolve({
+                rpcPort: ports[0],
+                tcpPort: ports[1],
+                websocketPort: ports[2],
+                restPort: ports[3],
+                discv5UdpPort: ports[4]
+              });
             });
           });
 
@@ -127,7 +135,9 @@ export class ServiceNode {
             args.logLevel = LogLevel.Debug;
           }
 
-          const [rpcPort, tcpPort, websocketPort, discv5UdpPort] = ports;
+          const { rpcPort, tcpPort, websocketPort, restPort, discv5UdpPort } =
+            ports;
+          this.restPort = restPort;
           this.rpcPort = rpcPort;
           this.websocketPort = websocketPort;
 
@@ -138,13 +148,15 @@ export class ServiceNode {
           Object.assign(
             mergedArgs,
             {
+              rest: true,
+              restPort,
               rpcPort,
               tcpPort,
               websocketPort,
               ...(args?.peerExchange && { discv5UdpPort }),
               ...(isGoWaku && { minRelayPeersToPublish: 0, legacyFilter })
             },
-            { rpcAddress: "0.0.0.0" },
+            { rpcAddress: "0.0.0.0", restAddress: "0.0.0.0" },
             _args
           );
 
@@ -210,11 +222,27 @@ export class ServiceNode {
   async ensureSubscriptions(
     pubsubTopics: string[] = [DefaultPubsubTopic]
   ): Promise<boolean> {
-    this.checkProcess();
+    return this.restCall<boolean>(
+      "/relay/v1/subscriptions",
+      "POST",
+      pubsubTopics,
+      async (response) => response.status === 200
+    );
+  }
 
-    return this.rpcCall<boolean>("post_waku_v2_relay_v1_subscriptions", [
-      pubsubTopics
-    ]);
+  async messages(
+    pubsubTopic: string = DefaultPubsubTopic
+  ): Promise<MessageRpcResponse[]> {
+    pubsubTopic = encodeURIComponent(pubsubTopic);
+    return this.restCall<MessageRpcResponse[]>(
+      `/relay/v1/messages/${pubsubTopic}`,
+      "GET",
+      null,
+      async (response) => {
+        const data = await response.json();
+        return data?.length ? data : [];
+      }
+    );
   }
 
   async ensureSubscriptionsAutosharding(
@@ -222,9 +250,12 @@ export class ServiceNode {
   ): Promise<boolean> {
     this.checkProcess();
 
-    return this.rpcCall<boolean>("post_waku_v2_relay_v1_auto_subscriptions", [
-      contentTopics
-    ]);
+    return this.restCall<boolean>(
+      "/relay/v1/subscriptions",
+      "POST",
+      contentTopics,
+      async (response) => response.status === 200
+    );
   }
 
   async sendMessage(
@@ -255,30 +286,21 @@ export class ServiceNode {
     ]);
   }
 
-  async messages(
-    pubsubTopic: string = DefaultPubsubTopic
-  ): Promise<MessageRpcResponse[]> {
-    this.checkProcess();
-
-    const msgs = await this.rpcCall<MessageRpcResponse[]>(
-      "get_waku_v2_relay_v1_messages",
-      [pubsubTopic]
-    );
-
-    return msgs.filter(isDefined);
-  }
-
   async messagesAutosharding(
     contentTopic: string
   ): Promise<MessageRpcResponse[]> {
     this.checkProcess();
 
-    const msgs = await this.rpcCall<MessageRpcResponse[]>(
-      "get_waku_v2_relay_v1_auto_messages",
-      [contentTopic]
+    contentTopic = encodeURIComponent(contentTopic);
+    return this.restCall<MessageRpcResponse[]>(
+      `/relay/v1/auto/messages/${contentTopic}`,
+      "GET",
+      null,
+      async (response) => {
+        const data = await response.json();
+        return data?.length ? data.filter(isDefined) : [];
+      }
     );
-
-    return msgs.filter(isDefined);
   }
 
   async getAsymmetricKeyPair(): Promise<KeyPair> {
@@ -411,6 +433,10 @@ export class ServiceNode {
     return `http://127.0.0.1:${this.rpcPort}/`;
   }
 
+  get httpUrl(): string {
+    return `http://127.0.0.1:${this.restPort}`;
+  }
+
   async rpcCall<T>(
     method: string,
     params: Array<string | number | unknown>
@@ -442,6 +468,31 @@ export class ServiceNode {
     );
   }
 
+  async restCall<T>(
+    endpoint: string,
+    method: "GET" | "POST",
+    body: any = null,
+    processResponse: (response: Response) => Promise<T>
+  ): Promise<T> {
+    this.checkProcess();
+
+    try {
+      log.info("Making a REST Call: ", endpoint, body);
+      const options: RequestInit = {
+        method,
+        headers: new Headers({ "Content-Type": "application/json" })
+      };
+      if (body) options.body = JSON.stringify(body);
+
+      const response = await fetch(`${this.httpUrl}${endpoint}`, options);
+      log.info(`Received REST Response: `, response.status);
+      return await processResponse(response);
+    } catch (error) {
+      log.error(`${this.httpUrl} failed with error:`, error);
+      throw error;
+    }
+  }
+
   private checkProcess(): void {
     if (!this.docker?.container) {
       throw `${this.type} container hasn't started`;
@@ -454,6 +505,7 @@ export function defaultArgs(): Args {
     listenAddress: "0.0.0.0",
     rpc: true,
     relay: false,
+    rest: true,
     rpcAdmin: true,
     websocketSupport: true,
     logLevel: LogLevel.Trace

packages/tests/src/types.ts

@@ -3,6 +3,7 @@ export interface Args {
   nat?: "none";
   listenAddress?: string;
   relay?: boolean;
+  rest?: boolean;
   rpc?: boolean;
   rpcAdmin?: boolean;
   nodekey?: string;
@@ -18,6 +19,7 @@ export interface Args {
   rpcPrivate?: boolean;
   websocketSupport?: boolean;
   tcpPort?: number;
+  restPort?: number;
   rpcPort?: number;
   websocketPort?: number;
   discv5BootstrapNode?: string;
@@ -27,6 +29,14 @@ export interface Args {
   clusterId?: number;
 }
 
+export interface Ports {
+  rpcPort: number;
+  tcpPort: number;
+  websocketPort: number;
+  restPort: number;
+  discv5UdpPort: number;
+}
+
 export enum LogLevel {
   Error = "ERROR",
   Info = "INFO",

packages/tests/tests/nwaku.node.spec.ts

@@ -14,6 +14,7 @@ describe("nwaku", () => {
       "--listen-address=0.0.0.0",
       "--rpc=true",
       "--relay=false",
+      "--rest=true",
       "--rpc-admin=true",
       "--websocket-support=true",
       "--log-level=TRACE",