feat(AI Transform Node): Reduce payload size

packages/editor-ui/src/components/ButtonParameter/utils.test.ts

@@ -1,8 +1,10 @@
 /* eslint-disable @typescript-eslint/no-explicit-any */
 import { describe, it, expect, vi, beforeEach } from 'vitest';
-import { generateCodeForAiTransform } from './utils';
+import { generateCodeForAiTransform, reducePayloadSizeOrThrow } from './utils';
 import { createPinia, setActivePinia } from 'pinia';
 import { generateCodeForPrompt } from '@/api/ai';
+import type { AskAiRequest } from '@/types/assistant.types';
+import type { Schema } from '@/Interface';
 
 vi.mock('./utils', async () => {
 	const actual = await vi.importActual('./utils');
@@ -86,3 +88,69 @@ describe('generateCodeForAiTransform - Retry Tests', () => {
 		expect(generateCodeForPrompt).toHaveBeenCalledTimes(1);
 	});
 });
+
+const mockPayload = () =>
+	({
+		context: {
+			schema: [
+				{ nodeName: 'node1', data: 'some data' },
+				{ nodeName: 'node2', data: 'other data' },
+			],
+			inputSchema: {
+				schema: {
+					value: [
+						{ key: 'prop1', value: 'value1' },
+						{ key: 'prop2', value: 'value2' },
+					],
+				},
+			},
+		},
+		question: 'What is node1 and prop1?',
+	}) as unknown as AskAiRequest.RequestPayload;
+
+describe('reducePayloadSizeOrThrow', () => {
+	it('reduces schema size when tokens exceed the limit', () => {
+		const payload = mockPayload();
+		const error = new Error('Limit is 100 tokens, but 104 were provided');
+
+		reducePayloadSizeOrThrow(payload, error);
+
+		expect(payload.context.schema.length).toBe(1);
+		expect(payload.context.schema[0]).toEqual({ nodeName: 'node1', data: 'some data' });
+	});
+
+	it('removes unreferenced properties in input schema', () => {
+		const payload = mockPayload();
+		const error = new Error('Limit is 100 tokens, but 150 were provided');
+
+		reducePayloadSizeOrThrow(payload, error);
+
+		expect(payload.context.inputSchema.schema.value.length).toBe(1);
+		expect((payload.context.inputSchema.schema.value as Schema[])[0].key).toBe('prop1');
+	});
+
+	it('removes all parent nodes if needed', () => {
+		const payload = mockPayload();
+		const error = new Error('Limit is 100 tokens, but 150 were provided');
+
+		payload.question = '';
+
+		reducePayloadSizeOrThrow(payload, error);
+
+		expect(payload.context.schema.length).toBe(0);
+	});
+
+	it('throws error if tokens still exceed after reductions', () => {
+		const payload = mockPayload();
+		const error = new Error('Limit is 100 tokens, but 200 were provided');
+
+		expect(() => reducePayloadSizeOrThrow(payload, error)).toThrowError(error);
+	});
+
+	it('throws error if message format is invalid', () => {
+		const payload = mockPayload();
+		const error = new Error('Invalid token message format');
+
+		expect(() => reducePayloadSizeOrThrow(payload, error)).toThrowError(error);
+	});
+});

packages/editor-ui/src/components/ButtonParameter/utils.ts

@@ -57,6 +57,134 @@ export function getSchemas() {
 	};
 }
 
+//------ Reduce payload ------
+
+const estimateNumberOfTokens = (item: unknown, averageTokenLength: number): number => {
+	if (typeof item === 'object') {
+		return Math.ceil(JSON.stringify(item).length / averageTokenLength);
+	}
+
+	return 0;
+};
+
+const calculateRemainingTokens = (error: Error) => {
+	// Expected message format:
+	//'This model's maximum context length is 8192 tokens. However, your messages resulted in 10514 tokens.'
+	const tokens = error.message.match(/\d+/g);
+
+	if (!tokens || tokens.length < 2) throw error;
+
+	const maxTokens = parseInt(tokens[0], 10);
+	const currentTokens = parseInt(tokens[1], 10);
+
+	return currentTokens - maxTokens;
+};
+
+const trimParentNodesSchema = (
+	payload: AskAiRequest.RequestPayload,
+	remainingTokensToReduce: number,
+	averageTokenLength: number,
+) => {
+	//check if parent nodes schema takes more tokens than available
+	let parentNodesTokenCount = estimateNumberOfTokens(payload.context.schema, averageTokenLength);
+
+	if (remainingTokensToReduce > parentNodesTokenCount) {
+		remainingTokensToReduce -= parentNodesTokenCount;
+		payload.context.schema = [];
+	}
+
+	//remove parent nodes not referenced in the prompt
+	if (payload.context.schema.length) {
+		const nodes = [...payload.context.schema];
+
+		for (let nodeIndex = 0; nodeIndex < nodes.length; nodeIndex++) {
+			if (payload.question.includes(nodes[nodeIndex].nodeName)) continue;
+
+			const nodeTokens = estimateNumberOfTokens(nodes[nodeIndex], averageTokenLength);
+			remainingTokensToReduce -= nodeTokens;
+			parentNodesTokenCount -= nodeTokens;
+			payload.context.schema.splice(nodeIndex, 1);
+
+			if (remainingTokensToReduce <= 0) break;
+		}
+	}
+
+	return [remainingTokensToReduce, parentNodesTokenCount];
+};
+
+const trimInputSchemaProperties = (
+	payload: AskAiRequest.RequestPayload,
+	remainingTokensToReduce: number,
+	averageTokenLength: number,
+	parentNodesTokenCount: number,
+) => {
+	if (remainingTokensToReduce <= 0) return remainingTokensToReduce;
+
+	//remove properties not referenced in the prompt from the input schema
+	if (Array.isArray(payload.context.inputSchema.schema.value)) {
+		const props = [...payload.context.inputSchema.schema.value];
+
+		for (let index = 0; index < props.length; index++) {
+			const key = props[index].key;
+
+			if (key && payload.question.includes(key)) continue;
+
+			const propTokens = estimateNumberOfTokens(props[index], averageTokenLength);
+			remainingTokensToReduce -= propTokens;
+			payload.context.inputSchema.schema.value.splice(index, 1);
+
+			if (remainingTokensToReduce <= 0) break;
+		}
+	}
+
+	//if tokensToReduce is still remaining, remove all parent nodes
+	if (remainingTokensToReduce > 0) {
+		payload.context.schema = [];
+		remainingTokensToReduce -= parentNodesTokenCount;
+	}
+
+	return remainingTokensToReduce;
+};
+
+/**
+ * Attempts to reduce the size of the payload to fit within token limits or throws an error if unsuccessful,
+ * payload would be modified in place
+ *
+ * @param {AskAiRequest.RequestPayload} payload - The request payload to be trimmed,
+ * 'schema' and 'inputSchema.schema' will be modified.
+ * @param {Error} error - The error to throw if the token reduction fails.
+ * @param {number} [averageTokenLength=4] - The average token length used for estimation.
+ * @throws {Error} - Throws the provided error if the payload cannot be reduced sufficiently.
+ */
+export function reducePayloadSizeOrThrow(
+	payload: AskAiRequest.RequestPayload,
+	error: Error,
+	averageTokenLength = 4,
+) {
+	try {
+		let remainingTokensToReduce = calculateRemainingTokens(error);
+
+		const [remaining, parentNodesTokenCount] = trimParentNodesSchema(
+			payload,
+			remainingTokensToReduce,
+			averageTokenLength,
+		);
+
+		remainingTokensToReduce = remaining;
+
+		remainingTokensToReduce = trimInputSchemaProperties(
+			payload,
+			remainingTokensToReduce,
+			averageTokenLength,
+			parentNodesTokenCount,
+		);
+
+		if (remainingTokensToReduce > 0) throw error;
+	} catch (e) {
+		throw e;
+	}
+}
+
 export async function generateCodeForAiTransform(prompt: string, path: string, retries = 1) {
 	const schemas = getSchemas();
 
@@ -83,6 +211,11 @@ export async function generateCodeForAiTransform(prompt: string, path: string, r
 				code = generatedCode;
 				break;
 			} catch (e) {
+				if (e.message.includes('maximum context length')) {
+					reducePayloadSizeOrThrow(payload, e);
+					continue;
+				}
+
 				retries--;
 				if (!retries) throw e;
 			}