UNTRACKED/k1ch/update-get-jwks/ use knex instead of PG pool (#92)

* chore: UNTRACKED/k1ch/update-get-jwks/ use knex instead of PG pool

* chore: UNTRACKED/k1ch/update-get-jwks/ remove pg pool from db-keys.js

database/layer/db-keys.js

@@ -1,46 +1,44 @@
-const { PGPool } = require('./pg_pool')
-const pool = new PGPool()
+const { usherDb } = require('./knex')
+const { pgErrorHandler } = require('../utils/pgErrorHandler')
 
-async function selectKeyWithKid (kid) {
-  const sql = 'SELECT * FROM usher.keys WHERE kid = $1'
-  const result = await pool.query(sql, [kid])
-  return result.rows
+const selectKeyWithKid = async (kid) => {
+  try {
+    return await usherDb('keys').where('kid', kid)
+  } catch (err) {
+    throw pgErrorHandler(err)
+  }
 }
 
-async function selectAllKeys () {
-  const sql = 'SELECT * FROM usher.keys ORDER BY key DESC'
-  const result = await pool.query(sql)
-  return result.rows
+const selectAllKeys = async () => {
+  try {
+    return await usherDb('keys').select('*').orderBy('key', 'desc')
+  } catch (err) {
+    throw pgErrorHandler(err)
+  }
 }
 
-async function selectLatestKey () {
-  const sql = 'SELECT * FROM usher.keys ORDER BY key DESC LIMIT 1'
-  const result = await pool.query(sql)
-  return result.rows[0]
+const selectLatestKey = async () => {
+  try {
+    return await usherDb('keys').select('*').orderBy('key', 'desc').first()
+  } catch (err) {
+    throw pgErrorHandler(err)
+  }
 }
 
-async function insertKey (kid, publicKey, privateKey) {
-  // TODO: Security Review: Should keys be encrypted prior to storing in DB?
-  const alreadyExistingKeys = await selectKeyWithKid(kid)
-  if (alreadyExistingKeys.length > 0) {
-    throw new Error('Insert failed. Key with kid ' + kid + ' already exists in the keystore.')
-  }
-  const sql = 'INSERT INTO usher.keys (kid, public_key, private_key) VALUES ($1, $2, $3)'
+const insertKey = async (kid, publicKey, privateKey) => {
   try {
-    await pool.query(sql, [kid, publicKey, privateKey])
-    return 'Insert successful'
-  } catch (error) {
-    return `Insert failed: ${error.message}`
+    const [insertedKey] = await usherDb('keys').insert({ kid, public_key: publicKey, private_key: privateKey }).returning('*')
+    return insertedKey
+  } catch (err) {
+    throw pgErrorHandler(err)
   }
 }
 
-async function deleteKey (kid) {
-  const alreadyExistingKeys = await selectKeyWithKid(kid)
-  if (alreadyExistingKeys.length === 1) {
-    const sql = 'DELETE FROM usher.keys WHERE kid = $1'
-    await pool.query(sql, [kid])
-  } else {
-    throw new Error('Delete failed. Key with kid ' + kid + ' not found.')
+const deleteKey = async (kid) => {
+  try {
+    return await usherDb('keys').where('kid', kid).del()
+  } catch (err) {
+    throw pgErrorHandler(err)
   }
 }
 

server/src/api_endpoints/endpoint_jwksjson.js

@@ -1,15 +1,19 @@
 const keystore = require('database/layer/db-keys')
-const pem2jwk = require('pem-jwk').pem2jwk
+const { pem2jwk } = require('pem-jwk')
+const createError = require('http-errors')
 
-async function getJwks (req, res) {
-  const keyPairs = await keystore.selectAllKeys()
-  const publicKeys = keyPairs.map(keyPair => {
-    const item = pem2jwk(keyPair.public_key)
-    item.kid = keyPair.kid
-    return item
-  })
-  const result = { keys: publicKeys }
-  res.status(200).send(result)
+const getJwks = async (req, res) => {
+  try {
+    const keyPairs = await keystore.selectAllKeys()
+    const publicKeys = keyPairs?.map(keyPair => {
+      const item = pem2jwk(keyPair.public_key)
+      item.kid = keyPair.kid
+      return item
+    })
+    res.status(200).send({ keys: publicKeys })
+  } catch ({ httpStatusCode = 500, message }) {
+    return next(createError(httpStatusCode, { message }))
+  }
 }
 
 module.exports = { getJwks }