Add file logging for errors. Add exponential backoff retry to web search. On failed web search, do not crash pipeline, return placeholder text to loanguage model

README.md

@@ -12,6 +12,7 @@ Final Dissertation Submission Repository
 ├── run.sh                          # Bash script to run project elements from one place
 ├── data/                           # Holder from project data
 |   ├── blocked.jsonl               # Web search results blocked by the Iffy list
+|   ├── error.log                   # Log file containing critical exceptions
 |   ├── claims.json                 # Retreived claims from dbkf fetcher
 |   ├── dev-eng.csv
 |   ├── train-eng.csv               # Normalized disinformation claims in CSV format from CLAN

agent/package-lock.json

@@ -18,6 +18,7 @@
         "compute-cosine-similarity": "^1.1.0",
         "csv-parse": "^6.1.0",
         "dotenv": "^17.2.3",
+        "exponential-backoff": "^3.1.3",
         "fs": "^0.0.1-security",
         "langchain": "^1.2.14",
         "selenium-webdriver": "^4.40.0",
@@ -1766,6 +1767,12 @@
       "integrity": "sha512-8guHBZCwKnFhYdHr2ysuRWErTwhoN2X8XELRlrRwpmfeY2jjuUN4taQMsULKUVo1K4DvZl+0pgfyoysHxvmvEw==",
       "license": "MIT"
     },
+    "node_modules/exponential-backoff": {
+      "version": "3.1.3",
+      "resolved": "https://registry.npmjs.org/exponential-backoff/-/exponential-backoff-3.1.3.tgz",
+      "integrity": "sha512-ZgEeZXj30q+I0EN+CbSSpIyPaJ5HVQD18Z1m+u1FXbAeT94mr1zw50q4q6jiiC447Nl/YTcIYSAftiGqetwXCA==",
+      "license": "Apache-2.0"
+    },
     "node_modules/fecha": {
       "version": "4.2.3",
       "resolved": "https://registry.npmjs.org/fecha/-/fecha-4.2.3.tgz",

agent/package.json

@@ -22,6 +22,7 @@
     "compute-cosine-similarity": "^1.1.0",
     "csv-parse": "^6.1.0",
     "dotenv": "^17.2.3",
+    "exponential-backoff": "^3.1.3",
     "fs": "^0.0.1-security",
     "langchain": "^1.2.14",
     "selenium-webdriver": "^4.40.0",

agent/tools/webSearch.ts

@@ -1,8 +1,30 @@
 import axios from "axios";
 import { checkDisinfo } from "./checkDisinfo";
 import { writeToJSONL } from "../utils/writeToJSONL";
+import { backOff } from "exponential-backoff";
+import { logger } from "../utils/logger";
 
 export async function queryScraper(query: string): Promise<string[]> {
+    try {
+        const response = await backOff(async () => {
+            return await queryScraperWorker(query);
+        },  {
+            numOfAttempts: 10,
+            startingDelay: 500,
+            timeMultiple: 2,
+            jitter: "full",
+            maxDelay: 50000,
+        })
+
+        return response;
+    }
+    catch (err: any) {
+        logger.error("Failed out of retry loop, returning placeholder to pipeline")
+        return ["API EXCEPTION"]
+    }
+}
+
+async function queryScraperWorker(query: string): Promise<string[]> {
     const instance = process.env.SCRAPER_INSTANCE;
     if (!instance) {
         throw new Error("SCRAPER_INSTANCE environment variable is not set");
@@ -28,9 +50,9 @@ export async function queryScraper(query: string): Promise<string[]> {
         response = await axios.get(url, { params });
     } catch (err: any) {
         if (err.response) {
-            throw new Error(
+            const desc = `HTTP error ${err.response.status}: ${JSON.stringify(err.response.data)}`
-                `HTTP error ${err.response.status}: ${JSON.stringify(err.response.data)}`
+            logger.error(desc)
-            );
+            throw new Error(desc);
         }
         throw err;
     }
@@ -38,7 +60,9 @@ export async function queryScraper(query: string): Promise<string[]> {
     const data = response.data;
 
     if (data?.status !== "ok") {
-        throw new Error(`API returned status: ${data?.status}`);
+        const desc = `API returned status: ${data?.status}`;
+        logger.error(desc)
+        throw new Error(desc);
     }
 
     // TEMP?: Convert API results to array of formatted strings.
@@ -47,7 +71,7 @@ export async function queryScraper(query: string): Promise<string[]> {
 
     const lines: string[] = context.map((item: any) => {
         if (checkDisinfo(item.url)) {
-            writeToJSONL("blocked.jsonl", {url: item.url, query: query})
+            writeToJSONL("blocked.jsonl", { url: item.url, query: query })
             return "";
         }
 

agent/utils/logger.ts

@@ -1,16 +1,31 @@
 import winston from "winston";
 
-export const logger = winston.createLogger({
+const consoleFormat = winston.format.combine(
-  level: "info",
-  format: winston.format.combine(
   winston.format.splat(),
   winston.format.colorize(),
   winston.format.timestamp({ format: "HH:mm:ss" }),
   winston.format.printf(({ level, message, timestamp }) => {
     return `${timestamp} ${level}: ${message}`;
   })
-  ),
+);
+
+const fileFormat = winston.format.combine(
+  winston.format.splat(),
+  winston.format.timestamp(),
+  winston.format.errors({ stack: true }),
+  winston.format.json()
+);
+
+export const logger = winston.createLogger({
+  level: "info",
   transports: [
-    new winston.transports.Console(),
+    new winston.transports.Console({
+      format: consoleFormat,
+    }),
+    new winston.transports.File({
+      filename: "../data/error.jsonl",
+      level: "error",
+      format: fileFormat,
+    }),
   ],
 });