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chore: add some shared llm-type plugin utilities (#5109)
* wip utilities * fixes * add tests * update comment * update * add math.random stubs to test hooks * fix
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,35 @@ | ||
| const Sampler = require('../../sampler') | ||
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| const RE_NEWLINE = /\n/g | ||
| const RE_TAB = /\t/g | ||
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| function normalize (text, limit = 128) { | ||
| if (!text) return | ||
| if (typeof text !== 'string' || !text || (typeof text === 'string' && text.length === 0)) return | ||
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| text = text | ||
| .replace(RE_NEWLINE, '\\n') | ||
| .replace(RE_TAB, '\\t') | ||
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| if (text.length > limit) { | ||
| return text.substring(0, limit) + '...' | ||
| } | ||
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| return text | ||
| } | ||
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| function isPromptCompletionSampled (sampler) { | ||
| return sampler.isSampled() | ||
| } | ||
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| module.exports = function (integrationName, tracerConfig) { | ||
| const integrationConfig = tracerConfig[integrationName] || {} | ||
| const { spanCharLimit, spanPromptCompletionSampleRate } = integrationConfig | ||
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| const sampler = new Sampler(spanPromptCompletionSampleRate ?? 1.0) | ||
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| return { | ||
| normalize: str => normalize(str, spanCharLimit), | ||
| isPromptCompletionSampled: () => isPromptCompletionSampled(sampler) | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,80 @@ | ||
| 'use strict' | ||
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| require('../../setup/tap') | ||
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| const makeUtilities = require('../../../src/plugins/util/llm') | ||
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| describe('llm utils', () => { | ||
| let utils | ||
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| describe('with default configuration', () => { | ||
| beforeEach(() => { | ||
| utils = makeUtilities('langchain', {}) | ||
| }) | ||
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| it('should normalize text to 128 characters', () => { | ||
| const text = 'a'.repeat(256) | ||
| expect(utils.normalize(text)).to.equal('a'.repeat(128) + '...') | ||
| }) | ||
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| it('should return undefined for empty text', () => { | ||
| expect(utils.normalize('')).to.be.undefined | ||
| }) | ||
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| it('should return undefined for a non-string', () => { | ||
| expect(utils.normalize(42)).to.be.undefined | ||
| }) | ||
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| it('should replace special characters', () => { | ||
| expect(utils.normalize('a\nb\tc')).to.equal('a\\nb\\tc') | ||
| }) | ||
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| it('should always sample prompt completion', () => { | ||
| expect(utils.isPromptCompletionSampled()).to.be.true | ||
| }) | ||
| }) | ||
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| describe('with custom configuration available', () => { | ||
| beforeEach(() => { | ||
| utils = makeUtilities('langchain', { | ||
| langchain: { | ||
| spanCharLimit: 100, | ||
| spanPromptCompletionSampleRate: 0.6 | ||
| } | ||
| }) | ||
| }) | ||
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| it('should normalize text to 100 characters', () => { | ||
| const text = 'a'.repeat(256) | ||
| expect(utils.normalize(text)).to.equal('a'.repeat(100) + '...') | ||
| }) | ||
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| describe('with a random value greater than 0.6', () => { | ||
| beforeEach(() => { | ||
| sinon.stub(Math, 'random').returns(0.7) | ||
| }) | ||
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| afterEach(() => { | ||
| Math.random.restore() | ||
| }) | ||
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| it('should not sample prompt completion', () => { | ||
| expect(utils.isPromptCompletionSampled()).to.be.false | ||
| }) | ||
| }) | ||
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| describe('with a random value less than 0.6', () => { | ||
| beforeEach(() => { | ||
| sinon.stub(Math, 'random').returns(0.5) | ||
| }) | ||
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| afterEach(() => { | ||
| Math.random.restore() | ||
| }) | ||
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| it('should sample prompt completion', () => { | ||
| expect(utils.isPromptCompletionSampled()).to.be.true | ||
| }) | ||
| }) | ||
| }) | ||
| }) |