Add a scheduler to measure the BOA balance of administrator accounts

packages/relay/config/config.yaml

@@ -65,12 +65,15 @@ scheduler:
     - name: purchase
       enable: true
       expression: "*/1 * * * * *"
-    - name: delegatorApproval
+    - name: delegator_approval
       enable: true
       expression: "*/5 * * * * *"
     - name: metrics
       enable: true
       expression: "*/5 * * * * *"
+    - name: metrics_certifier
+      enable: true
+      expression: "*/5 * * * * *"
 
 relay:
   certifiers:

packages/relay/src/main.ts

@@ -5,6 +5,7 @@ import { DefaultServer } from "./DefaultServer";
 import { ApprovalScheduler } from "./scheduler/ApprovalScheduler";
 import { CloseScheduler } from "./scheduler/CloseScheduler";
 import { DelegatorApprovalScheduler } from "./scheduler/DelegatorApprovalScheduler";
+import { MetricsCertifierScheduler } from "./scheduler/MetricsCertifierScheduler";
 import { MetricsScheduler } from "./scheduler/MetricsScheduler";
 import { Scheduler } from "./scheduler/Scheduler";
 import { StorePurchaseScheduler } from "./scheduler/StorePurchaseScheduler";
@@ -49,14 +50,18 @@ async function main() {
         if (scheduler && scheduler.enable) {
             schedulers.push(new StorePurchaseScheduler(scheduler.expression));
         }
-        scheduler = config.scheduler.getScheduler("delegatorApproval");
+        scheduler = config.scheduler.getScheduler("delegator_approval");
         if (scheduler && scheduler.enable) {
             schedulers.push(new DelegatorApprovalScheduler(scheduler.expression));
         }
         scheduler = config.scheduler.getScheduler("metrics");
         if (scheduler && scheduler.enable) {
             schedulers.push(new MetricsScheduler(scheduler.expression));
         }
+        scheduler = config.scheduler.getScheduler("metrics_certifier");
+        if (scheduler && scheduler.enable) {
+            schedulers.push(new MetricsCertifierScheduler(scheduler.expression));
+        }
     }
 
     const contractManager = new ContractManager(config);

packages/relay/src/routers/DefaultRouter.ts

@@ -5,7 +5,6 @@ import { WebService } from "../service/WebService";
 
 import { Tspec, TspecDocsMiddleware } from "tspec";
 
-import { BigNumber, Wallet } from "ethers";
 import express from "express";
 
 export class DefaultRouter {
@@ -57,13 +56,12 @@ export class DefaultRouter {
      * @private
      */
     private async getMetrics(req: express.Request, res: express.Response) {
-        res.set("Content-Type", this.metrics.contentType());
-        this.metrics.add("status", 1);
-        for (const elem of this.config.relay.certifiers) {
-            const wallet = new Wallet(elem, this.contractManager.sideChainProvider);
-            const balance = (await wallet.getBalance()).div(BigNumber.from(1_000_000_000)).toNumber();
-            this.metrics.gaugeLabels("certifier_balance", { address: wallet.address }, balance);
+        try {
+            res.set("Content-Type", this.metrics.contentType());
+            this.metrics.add("status", 1);
+            res.end(await this.metrics.metrics());
+        } catch (error: any) {
+            return res.status(500);
         }
-        res.end(await this.metrics.metrics());
     }
 }

packages/relay/src/scheduler/MetricsCertifierScheduler.ts

@@ -0,0 +1,91 @@
+import "@nomiclabs/hardhat-ethers";
+import { BigNumber, Wallet } from "ethers";
+import { Config } from "../common/Config";
+import { logger } from "../common/Logger";
+import { ContractManager } from "../contract/ContractManager";
+import { Metrics } from "../metrics/Metrics";
+import { GraphStorage } from "../storage/GraphStorage";
+import { RelayStorage } from "../storage/RelayStorage";
+import { Scheduler } from "./Scheduler";
+
+/**
+ * Creates blocks at regular intervals and stores them in IPFS and databases.
+ */
+export class MetricsCertifierScheduler extends Scheduler {
+    private _config: Config | undefined;
+    private _contractManager: ContractManager | undefined;
+    private _metrics: Metrics | undefined;
+    private _storage: RelayStorage | undefined;
+    private _graph: GraphStorage | undefined;
+
+    constructor(expression: string) {
+        super(expression);
+    }
+
+    private get config(): Config {
+        if (this._config !== undefined) return this._config;
+        else {
+            logger.error("Config is not ready yet.");
+            process.exit(1);
+        }
+    }
+
+    private get metrics(): Metrics {
+        if (this._metrics !== undefined) return this._metrics;
+        else {
+            logger.error("Metrics is not ready yet.");
+            process.exit(1);
+        }
+    }
+
+    private get storage(): RelayStorage {
+        if (this._storage !== undefined) return this._storage;
+        else {
+            logger.error("Storage is not ready yet.");
+            process.exit(1);
+        }
+    }
+
+    private get contractManager(): ContractManager {
+        if (this._contractManager !== undefined) return this._contractManager;
+        else {
+            logger.error("ContractManager is not ready yet.");
+            process.exit(1);
+        }
+    }
+
+    private get graph(): GraphStorage {
+        if (this._graph !== undefined) return this._graph;
+        else {
+            logger.error("GraphStorage is not ready yet.");
+            process.exit(1);
+        }
+    }
+
+    public setOption(options: any) {
+        if (options) {
+            if (options.config && options.config instanceof Config) this._config = options.config;
+            if (options.contractManager && options.contractManager instanceof ContractManager)
+                this._contractManager = options.contractManager;
+            if (options.storage && options.storage instanceof RelayStorage) this._storage = options.storage;
+            if (options.graph && options.graph instanceof GraphStorage) this._graph = options.graph;
+            if (options.metrics && options.metrics instanceof Metrics) this._metrics = options.metrics;
+        }
+    }
+
+    public async onStart() {
+        //
+    }
+
+    protected async work() {
+        try {
+            for (const elem of this.config.relay.certifiers) {
+                const wallet = new Wallet(elem, this.contractManager.sideChainProvider);
+                const balance = (await wallet.getBalance()).div(BigNumber.from(1_000_000_000)).toNumber();
+                this.metrics.gaugeLabels("certifier_balance", { address: wallet.address }, balance);
+            }
+        } catch (error) {
+            logger.error(`Failed to execute the MetricsBOAScheduler: ${error}`);
+        }
+    }
+}