new(whatsapp.gblib): LLM SQL.

package.json

@@ -192,6 +192,7 @@
     "rimraf": "5.0.7",
     "safe-buffer": "5.2.1",
     "scanf": "1.2.0",
+    "sqlite3": "5.1.7",
     "sequelize": "6.28.2",
     "sequelize-cli": "6.6.0",
     "sequelize-typescript": "2.1.5",

packages/gpt.gblib/services/ChatServices.ts

@@ -29,7 +29,7 @@
 \*****************************************************************************/
 
 'use strict';
-
+import { PromptTemplate } from '@langchain/core/prompts';
 import { WikipediaQueryRun } from '@langchain/community/tools/wikipedia_query_run';
 import { HNSWLib } from '@langchain/community/vectorstores/hnswlib';
 import { BaseCallbackHandler } from '@langchain/core/callbacks/base';
@@ -48,7 +48,7 @@ import { convertToOpenAITool } from '@langchain/core/utils/function_calling';
 import { ChatOpenAI, OpenAI } from '@langchain/openai';
 import { SqlDatabaseChain } from 'langchain/chains/sql_db';
 import { SqlDatabase } from 'langchain/sql_db';
-import  {DataSource } from 'typeorm';
+import { DataSource } from 'typeorm';
 import { GBMinInstance } from 'botlib';
 import * as Fs from 'fs';
 import { jsonSchemaToZod } from 'json-schema-to-zod';
@@ -477,13 +477,11 @@ export class ChatServices {
       // const username = con['storageUsername'];
       // const password = con['storagePassword'];
 
-
       const dataSource = new DataSource({
         type: 'sqlite',
-         database: "/home/gbadmin3910/DATA/BotServer/work/frukigbot1.gbai/data.db",
+        database: '/home/gbadmin3910/DATA/BotServer/work/frukigbot1.gbai/data.db'
       });
 
-
       // const dataSource = new DataSource({
       //   type: dialect as any,
       //   host: host,
@@ -499,12 +497,78 @@ export class ChatServices {
         appDataSource: dataSource
       });
 
-      const chain = new SqlDatabaseChain({
+      const prompt =
-        llm: model,
+        PromptTemplate.fromTemplate(`Based on the provided SQL table schema below, write a SQL query that would answer the user's question.
-        database: db, 
+    ------------
+    SCHEMA: {schema}
+    ------------
+    QUESTION: {question}
+    ------------
+    SQL QUERY:`);
+
+      /**
+       * Create a new RunnableSequence where we pipe the output from `db.getTableInfo()`
+       * and the users question, into the prompt template, and then into the llm.
+       * We're also applying a stop condition to the llm, so that it stops when it
+       * sees the `\nSQLResult:` token.
+       */
+      const sqlQueryChain = RunnableSequence.from([
+        {
+          schema: async () => db.getTableInfo(),
+          question: (input: { question: string }) => input.question
+        },
+        prompt,
+        model.bind({ stop: ['\nSQLResult:'] }),
+        new StringOutputParser()
+      ]);
+
+      /**
+       * Create the final prompt template which is tasked with getting the natural
+       * language response to the SQL query.
+       */
+      const finalResponsePrompt =
+        PromptTemplate.fromTemplate(`Based on the table schema below, question, SQL query, and SQL response, write a natural language response:
+    ------------
+    SCHEMA: {schema}
+    ------------
+    QUESTION: {question}
+    ------------
+    SQL QUERY: {query}
+    ------------
+    SQL RESPONSE: {response}
+    ------------
+    NATURAL LANGUAGE RESPONSE:`);
+
+      /**
+       * Create a new RunnableSequence where we pipe the output from the previous chain, the users question,
+       * and the SQL query, into the prompt template, and then into the llm.
+       * Using the result from the `sqlQueryChain` we can run the SQL query via `db.run(input.query)`.
+       *
+       * Lastly we're piping the result of the first chain (the outputted SQL query) so it is
+       * logged along with the natural language response.
+       */
+      const finalChain = RunnableSequence.from([
+        {
+          question: input => input.question,
+          query: sqlQueryChain
+        },
+        {
+          schema: async () => db.getTableInfo(),
+          question: input => input.question,
+          query: input => input.query,
+          response: input => db.run(input.query)
+        },
+        {
+          result: finalResponsePrompt.pipe(model).pipe(new StringOutputParser()),
+          // Pipe the query through here unchanged so it gets logged alongside the result.
+          sql: previousStepResult => previousStepResult.query
+        }
+      ]);
+
+      result = await finalChain.invoke({
+        question: question
       });
 
-      result = await chain.run(question);
     } else if (LLMMode === 'nochain') {
       result = await (tools.length > 0 ? modelWithTools : model).invoke(`
       ${systemPrompt}