*Heavily refactor to use new RPC schema

*Create basic, wisdom, and streaming rpc request variants

package.json

@@ -8,6 +8,7 @@
         "build": "rimraf dist && tsc"
     },
     "devDependencies": {
+        "@lumeweb/relay": "https://github.com/LumeWeb/relay.git",
         "@types/json-stable-stringify": "^1.0.34",
         "@types/node": "^18.0.0",
         "prettier": "^2.7.1",

src/error.ts

@@ -1 +1,2 @@
 export const ERR_NOT_READY = "NOT_READY";
+export const ERR_MAX_TRIES_HIT = "ERR_MAX_TRIES_HIT";

src/index.ts

@@ -1,6 +1,15 @@
-import RpcNetwork from "./rpcNetwork.js";
-import RpcQuery from "./rpcNetwork.js";
+import RpcNetwork from "./network.js";
+import RpcQueryBase from "./query/base.js";
+import SimpleRpcQuery from "./query/simple.js";
+import StreamingRpcQuery from "./query/streaming.js";
+import WisdomRpcQuery from "./query/wisdom.js";
 
 export * from "./types.js";
 
-export { RpcNetwork, RpcQuery };
+export {
+  RpcNetwork,
+  RpcQueryBase,
+  SimpleRpcQuery,
+  StreamingRpcQuery,
+  WisdomRpcQuery,
+};

src/network.ts

@@ -1,6 +1,9 @@
-import RpcQuery from "./rpcQuery.js";
+import WisdomRpcQuery from "./query/wisdom.js";
 // @ts-ignore
 import DHT from "@hyperswarm/dht";
+import StreamingRpcQuery from "./query/streaming.js";
+import { RpcQueryOptions, StreamHandlerFunction } from "./types.js";
+import SimpleRpcQuery from "./query/simple.js";
 
 export default class RpcNetwork {
   constructor(dht = new DHT()) {
@@ -23,16 +26,6 @@ export default class RpcNetwork {
     this._majorityThreshold = value;
   }
 
-  private _maxTtl = 12 * 60 * 60;
-
-  get maxTtl(): number {
-    return this._maxTtl;
-  }
-
-  set maxTtl(value: number) {
-    this._maxTtl = value;
-  }
-
   private _queryTimeout = 30;
 
   get queryTimeout(): number {
@@ -98,17 +91,57 @@ export default class RpcNetwork {
     this._relays = [];
   }
 
-  public query(
-    query: string,
-    chain: string,
+  public wisdomQuery(
+    method: string,
+    module: string,
     data: object | any[] = {},
-    bypassCache: boolean = false
-  ): RpcQuery {
-    return new RpcQuery(this, {
-      query,
-      chain,
+    bypassCache: boolean = false,
+    options: RpcQueryOptions = {}
+  ): WisdomRpcQuery {
+    return new WisdomRpcQuery(
+      this,
+      {
+        method,
+        module,
         data,
         bypassCache: bypassCache || this._bypassCache,
-    });
+      },
+      options
+    );
+  }
+
+  public streamingQuery(
+    relay: Buffer | string,
+    method: string,
+    module: string,
+    streamHandler: StreamHandlerFunction,
+    data: object | any[] = {},
+    options: RpcQueryOptions = {}
+  ): StreamingRpcQuery {
+    return new StreamingRpcQuery(
+      this,
+      relay,
+      { method, module, data },
+      { streamHandler, ...options }
+    );
+  }
+
+  public simpleQuery(
+    relay: Buffer | string,
+    method: string,
+    module: string,
+    data: object | any[] = {},
+    options: RpcQueryOptions = {}
+  ): SimpleRpcQuery {
+    return new SimpleRpcQuery(
+      this,
+      relay,
+      {
+        method,
+        module,
+        data,
+      },
+      options
+    );
   }
 }

src/query/base.ts

@@ -0,0 +1,135 @@
+import { clearTimeout, setTimeout } from "timers";
+import { pack, unpack } from "msgpackr";
+import { Buffer } from "buffer";
+import { isPromise } from "../util.js";
+import RpcNetwork from "../rpcNetwork.js";
+import { RpcQueryOptions } from "../types.js";
+import type { RPCRequest, RPCResponse } from "@lumeweb/relay";
+
+export default abstract class RpcQueryBase {
+  protected _network: RpcNetwork;
+  protected _query: RPCRequest;
+  protected _options: RpcQueryOptions;
+
+  protected _promise?: Promise<any>;
+  protected _timeoutTimer?: any;
+  protected _timeout: boolean = false;
+  protected _completed: boolean = false;
+  protected _responses: { [relay: string]: RPCResponse } = {};
+  protected _errors: { [relay: string]: any } = {};
+  protected _promiseResolve?: (data: any) => void;
+
+  constructor(
+    network: RpcNetwork,
+    query: RPCRequest,
+    options: RpcQueryOptions = {}
+  ) {
+    this._network = network;
+    this._query = query;
+    this._options = options;
+    this.init();
+  }
+
+  get result(): Promise<RPCResponse> {
+    return this._promise as Promise<RPCResponse>;
+  }
+
+  private handeTimeout() {
+    this.resolve(undefined, true);
+  }
+
+  protected resolve(data?: RPCResponse, timeout: boolean = false): void {
+    clearTimeout(this._timeoutTimer);
+    this._timeout = timeout;
+    this._completed = true;
+
+    if (timeout) {
+      data = {
+        error: "timeout",
+      };
+    }
+
+    this._promiseResolve?.(data);
+  }
+
+  protected async init() {
+    this._promise =
+      this._promise ??
+      new Promise<any>((resolve) => {
+        this._promiseResolve = resolve;
+      });
+
+    this._timeoutTimer =
+      this._timeoutTimer ??
+      setTimeout(
+        this.handeTimeout.bind(this),
+        (this._options.queryTimeout || this._network.queryTimeout) * 1000
+      );
+
+    await this._network.ready;
+
+    const promises = [];
+
+    for (const relay of this.getRelays()) {
+      promises.push(this.queryRelay(relay));
+    }
+
+    await Promise.allSettled(promises);
+    this.checkResponses();
+  }
+
+  protected async queryRelay(relay: string | Buffer): Promise<any> {
+    let socket: any;
+
+    let relayKey: Buffer = relay as Buffer;
+
+    if (relay === "string") {
+      relayKey = Buffer.from(relay, "hex");
+    }
+    if (relay instanceof Buffer) {
+      relayKey = relay;
+      relay = relay.toString("hex");
+    }
+
+    try {
+      socket = this._network.dht.connect(relayKey);
+      if (isPromise(socket)) {
+        socket = await socket;
+      }
+    } catch (e) {
+      return;
+    }
+    return new Promise((resolve, reject) => {
+      let timer: any;
+      socket.on("data", (res: Buffer) => {
+        relay = relay as string;
+        if (timer && timer.close) {
+          clearTimeout(timer as any);
+        }
+        socket.end();
+        const response = unpack(res as any) as RPCResponse;
+        if (response && response.error) {
+          this._errors[relay] = response.error;
+          return reject(null);
+        }
+        this._responses[relay] = response;
+        resolve(null);
+      });
+      socket.on("error", (error: any) => {
+        relay = relay as string;
+        this._errors[relay] = error;
+        reject({ error });
+      });
+      socket.write("rpc");
+      socket.write(pack(this._query));
+      timer = setTimeout(() => {
+        this._errors[relay as string] = "timeout";
+        reject(null);
+      }, (this._options.relayTimeout || this._network.relayTimeout) * 1000) as NodeJS.Timeout;
+    });
+  }
+
+  protected abstract checkResponses(): void;
+
+  protected abstract getRelays(): string[] | Buffer[];
+}

src/query/simple.ts

@@ -0,0 +1,35 @@
+import RpcQueryBase from "./base.js";
+import RpcNetwork from "../rpcNetwork.js";
+import type { RPCRequest } from "@lumeweb/relay";
+import { RpcQueryOptions } from "../types.js";
+import type { Buffer } from "buffer";
+
+export default class SimpleRpcQuery extends RpcQueryBase {
+  private _relay: string | Buffer;
+  constructor(
+    network: RpcNetwork,
+    relay: string | Buffer,
+    query: RPCRequest,
+    options: RpcQueryOptions
+  ) {
+    super(network, query, options);
+    this._relay = relay;
+    this.init();
+  }
+
+  protected checkResponses(): void {
+    if (Object.keys(this._responses).length) {
+      this.resolve(Object.values(this._responses).pop());
+      return;
+    }
+
+    if (Object.keys(this._errors).length) {
+      this.resolve({ error: Object.values(this._errors).pop() });
+      return;
+    }
+  }
+
+  protected getRelays(): string[] | Buffer[] {
+    return [this._relay] as string[] | Buffer[];
+  }
+}

src/query/streaming.ts

@@ -0,0 +1,78 @@
+import SimpleRpcQuery from "./simple.js";
+import { Buffer } from "buffer";
+import { isPromise } from "../util.js";
+import { clearTimeout, setTimeout } from "timers";
+import { pack, unpack } from "msgpackr";
+import type { RPCRequest } from "@lumeweb/relay";
+import { RPCResponse } from "@lumeweb/relay";
+import RpcNetwork from "../rpcNetwork.js";
+import { StreamingRpcQueryOptions } from "../types.js";
+
+export default class StreamingRpcQuery extends SimpleRpcQuery {
+  protected _options: StreamingRpcQueryOptions;
+  constructor(
+    network: RpcNetwork,
+    relay: string | Buffer,
+    query: RPCRequest,
+    options: StreamingRpcQueryOptions
+  ) {
+    super(network, relay, query, options);
+    this._options = options;
+  }
+  protected async queryRelay(relay: string | Buffer): Promise<any> {
+    let socket: any;
+
+    let relayKey: Buffer = relay as Buffer;
+
+    if (relay === "string") {
+      relayKey = Buffer.from(relay, "hex");
+    }
+    if (relay instanceof Buffer) {
+      relayKey = relay;
+      relay = relay.toString("hex");
+    }
+
+    try {
+      socket = this._network.dht.connect(relayKey);
+      if (isPromise(socket)) {
+        socket = await socket;
+      }
+    } catch (e) {
+      return;
+    }
+    return new Promise((resolve, reject) => {
+      let timer: any;
+      socket.on("data", (res: Buffer) => {
+        relay = relay as string;
+        if (timer && timer.close) {
+          clearTimeout(timer as any);
+        }
+        socket.end();
+        const response = unpack(res as any) as RPCResponse;
+        if (response && response.error) {
+          this._errors[relay] = response.error;
+          return reject(null);
+        }
+
+        if (response?.data.done) {
+          this._responses[relay] = {};
+          resolve(null);
+          return;
+        }
+
+        this._options.streamHandler(response?.data.data);
+      });
+      socket.on("error", (error: any) => {
+        relay = relay as string;
+        this._errors[relay] = error;
+        reject({ error });
+      });
+      socket.write("rpc");
+      socket.write(pack(this._query));
+      timer = setTimeout(() => {
+        this._errors[relay as string] = "timeout";
+        reject(null);
+      }, (this._options.relayTimeout || this._network.relayTimeout) * 1000) as NodeJS.Timeout;
+    });
+  }
+}

src/query/wisdom.ts

@@ -0,0 +1,78 @@
+import RpcQueryBase from "./base.js";
+import { flatten } from "../util.js";
+import { Buffer } from "buffer";
+import type { RPCResponse } from "@lumeweb/relay";
+import { blake2b } from "libskynet";
+import { ERR_MAX_TRIES_HIT } from "../error.js";
+
+export default class WisdomRpcQuery extends RpcQueryBase {
+  private _maxTries = 3;
+  private _tries = 0;
+
+  protected checkResponses(): void {
+    const responseStore = this._responses;
+    const responseStoreData = Object.values(responseStore);
+
+    type ResponseGroup = { [response: string]: number };
+
+    const responseObjects = responseStoreData.reduce((output: any, item) => {
+      const itemFlattened = flatten(item?.data).sort();
+
+      const hash = Buffer.from(
+        blake2b(Buffer.from(JSON.stringify(itemFlattened)))
+      ).toString("hex");
+      output[hash] = item?.data;
+      return output;
+    }, {});
+    const responses: ResponseGroup = responseStoreData.reduce(
+      (output: ResponseGroup, item) => {
+        const itemFlattened = flatten(item?.data).sort();
+        const hash = Buffer.from(
+          blake2b(Buffer.from(JSON.stringify(itemFlattened)))
+        ).toString("hex");
+        output[hash] = output[hash] ?? 0;
+        output[hash]++;
+        return output;
+      },
+      {}
+    );
+
+    for (const responseHash in responses) {
+      if (
+        responses[responseHash] / responseStoreData.length >=
+        this._network.majorityThreshold
+      ) {
+        let response: RPCResponse = responseObjects[responseHash];
+
+        // @ts-ignore
+        if (null === response) {
+          if (this._tries <= this._maxTries) {
+            this._tries++;
+            this.retry();
+            return;
+          }
+
+          response = { error: ERR_MAX_TRIES_HIT };
+        }
+
+        this.resolve(response);
+        break;
+      }
+    }
+  }
+
+  private retry() {
+    this._responses = {};
+    this._errors = {};
+
+    if (this._completed) {
+      return;
+    }
+
+    this.init();
+  }
+
+  protected getRelays(): string[] | [] {
+    return this._network.relays;
+  }
+}

src/rpcQuery.ts

@@ -1,174 +0,0 @@
-import { clearTimeout, setTimeout } from "timers";
-import RpcNetwork from "./rpcNetwork.js";
-import { pack, unpack } from "msgpackr";
-import { RPCRequest, RPCResponse } from "./types.js";
-import { Buffer } from "buffer";
-import { blake2b } from "libskynet";
-import { flatten } from "./util.js";
-
-export default class RpcQuery {
-  private _network: RpcNetwork;
-  private _query: RPCRequest;
-  private _promise?: Promise<any>;
-  private _timeoutTimer?: any;
-  private _timeout: boolean = false;
-  private _completed: boolean = false;
-  private _responses: { [relay: string]: RPCResponse } = {};
-  private _promiseResolve?: (data: any) => void;
-  private _maxTries = 3;
-  private _tries = 0;
-
-  constructor(network: RpcNetwork, query: RPCRequest) {
-    this._network = network;
-    this._query = query;
-    this.init();
-  }
-
-  get result(): Promise<any> {
-    return this._promise as Promise<any>;
-  }
-
-  private handeTimeout() {
-    this.resolve(false, true);
-  }
-
-  private resolve(data: any, timeout: boolean = false): void {
-    clearTimeout(this._timeoutTimer);
-    this._timeout = timeout;
-    this._completed = true;
-    // @ts-ignore
-    this._promiseResolve(data);
-  }
-
-  private async init() {
-    this._promise =
-      this._promise ??
-      new Promise<any>((resolve) => {
-        this._promiseResolve = resolve;
-      });
-
-    this._timeoutTimer =
-      this._timeoutTimer ??
-      setTimeout(
-        this.handeTimeout.bind(this),
-        this._network.queryTimeout * 1000
-      );
-
-    await this._network.ready;
-
-    const promises = [];
-
-    // tslint:disable-next-line:forin
-    for (const relay of this._network.relays) {
-      promises.push(this.queryRelay(relay));
-    }
-
-    await Promise.allSettled(promises);
-    this.checkResponses();
-  }
-
-  private async queryRelay(relay: string): Promise<any> {
-    let socket: any;
-
-    try {
-      socket = this._network.dht.connect(Buffer.from(relay, "hex"));
-      if (isPromise(socket)) {
-        socket = await socket;
-      }
-    } catch (e) {
-      return;
-    }
-    return new Promise((resolve, reject) => {
-      let timer: any;
-      socket.on("data", (res: Buffer) => {
-        if (timer && timer.close) {
-          clearTimeout(timer as any);
-        }
-        socket.end();
-        const response = unpack(res as any) as RPCResponse;
-        if (response && response.error) {
-          return reject(response);
-        }
-        this._responses[relay] = response;
-        resolve(null);
-      });
-      socket.on("error", (error: any) => reject({ error }));
-      socket.write("rpc");
-      socket.write(pack(this._query));
-      timer = setTimeout(() => {
-        reject("timeout");
-      }, this._network.relayTimeout * 1000) as NodeJS.Timeout;
-    });
-  }
-
-  private checkResponses() {
-    const responseStore = this._responses;
-    const responseStoreData = Object.values(responseStore);
-
-    type ResponseGroup = { [response: string]: number };
-
-    const responseObjects = responseStoreData.reduce((output: any, item) => {
-      const itemFlattened = flatten(item?.data).sort();
-
-      const hash = Buffer.from(
-        blake2b(Buffer.from(JSON.stringify(itemFlattened)))
-      ).toString("hex");
-      output[hash] = item?.data;
-      return output;
-    }, {});
-    const responses: ResponseGroup = responseStoreData.reduce(
-      (output: ResponseGroup, item) => {
-        const itemFlattened = flatten(item?.data).sort();
-        const hash = Buffer.from(
-          blake2b(Buffer.from(JSON.stringify(itemFlattened)))
-        ).toString("hex");
-        output[hash] = output[hash] ?? 0;
-        output[hash]++;
-        return output;
-      },
-      {}
-    );
-
-    for (const responseHash in responses) {
-      if (
-        responses[responseHash] / responseStoreData.length >=
-        this._network.majorityThreshold
-      ) {
-        // @ts-ignore
-        let response: RPCResponse | boolean = responseObjects[responseHash];
-
-        // @ts-ignore
-        if (null === response) {
-          if (this._tries <= this._maxTries) {
-            this._tries++;
-            this.retry();
-            return;
-          }
-
-          response = false;
-        }
-
-        this.resolve(response);
-        break;
-      }
-    }
-  }
-
-  private retry() {
-    this._responses = {};
-
-    if (this._completed) {
-      return;
-    }
-
-    this.init();
-  }
-}
-
-function isPromise(obj: Promise<any>) {
-  return (
-    !!obj &&
-    (typeof obj === "object" || typeof obj === "function") &&
-    typeof obj.then === "function"
-  );
-}

src/types.ts

@@ -1,12 +1,9 @@
-export interface RPCRequest {
-  bypassCache: boolean;
-  chain: string;
-  query: string;
-  data: any;
+export interface RpcQueryOptions {
+  queryTimeout?: number;
+  relayTimeout?: number;
+}
+export interface StreamingRpcQueryOptions extends RpcQueryOptions {
+  streamHandler: StreamHandlerFunction;
 }
 
-export interface RPCResponse {
-  updated: number;
-  data: any;
-  error?: string
-}
+export type StreamHandlerFunction = (data: Uint8Array) => void;

src/util.ts

@@ -54,3 +54,11 @@ export function flatten(target: any, opts: any = {}): any[] {
 
   return output;
 }
+
+export function isPromise(obj: Promise<any>) {
+  return (
+    !!obj &&
+    (typeof obj === "object" || typeof obj === "function") &&
+    typeof obj.then === "function"
+  );
+}