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feat: Integrate zod for request body validation #41

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feat: Integrate zod for request body validation #41

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106b38e
feat: Integrate zod for request body validation
nyintosh May 8, 2024
e22d7ae
refactor: Extract and add min restriction in zod schema
nyintosh May 9, 2024
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4 changes: 3 additions & 1 deletion vector-api/package.json
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Original file line number Diff line number Diff line change
Expand Up @@ -21,6 +21,7 @@
"wrangler": "^3.50.0"
},
"dependencies": {
"@hono/zod-validator": "^0.2.1",
"@types/body-parser": "^1.19.5",
"@upstash/vector": "^1.0.7",
"body-parser": "^1.20.2",
Expand All @@ -29,6 +30,7 @@
"hono": "^4.2.4",
"langchain": "^0.1.34",
"openai": "^4.35.0",
"ts-node": "^10.9.2"
"ts-node": "^10.9.2",
"zod": "^3.23.7"
}
}
46 changes: 33 additions & 13 deletions vector-api/pnpm-lock.yaml
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17 changes: 7 additions & 10 deletions vector-api/src/index.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,8 @@ import { Hono } from 'hono'
import { env } from 'hono/adapter'
import { cors } from 'hono/cors'
import { RecursiveCharacterTextSplitter } from 'langchain/text_splitter'
import { zValidator } from '@hono/zod-validator';
import { z } from 'zod'

const semanticSplitter = new RecursiveCharacterTextSplitter({
chunkSize: 25,
Expand All @@ -24,11 +26,11 @@ const app = new Hono()

app.use(cors())

app.post('/', async (c) => {
if (c.req.header('Content-Type') !== 'application/json') {
return c.json({ error: 'JSON body expected.' }, { status: 406 })
}
const zodSchema = z.object({
message: z.string().min(1, { message: "Message argument is required." })
})

app.post('/', zValidator('json', zodSchema), async (c) => {
try {
const { VECTOR_TOKEN, VECTOR_URL } = env<Environment>(c)

Expand All @@ -38,12 +40,7 @@ app.post('/', async (c) => {
cache: false, // disable needed for cf worker deployment
})

const body = await c.req.json()
let { message } = body as { message: string }

if (!message) {
return c.json({ error: 'Message argument is required.' }, { status: 400 })
}
let { message } = c.req.valid('json');

// this is because of the cloudflare worker sub-request limit
if (message.split(/\s/).length > 35 || message.length > 1000) {
Expand Down