Refactor / hb instance id. Add uniswap err message

.env.example

@@ -7,7 +7,7 @@ PORT=5000
 # ipv6 format for locahost ["::ffff:127.0.0.1", "::ffff:1", "fe80::1", "::1"]
 IP_WHITELIST=
 
-HUMMINGBOT_CLIENT_ID={client_id}
+HUMMINGBOT_INSTANCE_ID={client_id}
 
 # Celo
 

src/routes/uniswap.route.js

@@ -88,8 +88,14 @@ router.post('/sell-price', async (req, res) => {
   } catch (err) {
     debug(err)
     let reason
-    err.reason ? reason = err.reason : reason = statusMessages.operation_error
-    res.status(500).json({
+    let err_code = 500
+    if (Object.keys(err).includes('isInsufficientReservesError')) {
+      err_code = 200
+      reason = statusMessages.insufficient_reserves + ' in Sell at Uniswap'
+    } else {
+      err.reason ? reason = err.reason : reason = statusMessages.operation_error
+    }
+    res.status(err_code).json({
       error: reason,
       message: err
     })
@@ -140,8 +146,14 @@ router.post('/buy-price', async (req, res) => {
   } catch (err) {
     debug(err)
     let reason
-    err.reason ? reason = err.reason : reason = statusMessages.operation_error
-    res.status(500).json({
+    let err_code = 500
+    if (Object.keys(err).includes('isInsufficientReservesError')) {
+      err_code = 200
+      reason = statusMessages.insufficient_reserves + ' in Buy at Uniswap'
+    } else {
+      err.reason ? reason = err.reason : reason = statusMessages.operation_error
+    }
+    res.status(err_code).json({
       error: reason,
       message: err
     })

src/services/utils.js

@@ -9,6 +9,7 @@ export const statusMessages = {
   operation_error: 'Operation Error',
   no_pool_available: 'No Pool Available',
   invalid_token_symbol: 'Invalid Token Symbol',
+  insufficient_reserves: 'Insufficient Liquidity Reserves',
 }
 
 export const latency = (startTime, endTime) => parseFloat((endTime - startTime) / 1000)
@@ -71,8 +72,11 @@ export const strToDecimal = (str) => parseInt(str) / 100;
 
 export const getHummingbotMemo = () => {
   const prefix = 'hbot'
-  const clientId = process.env.HUMMINGBOT_CLIENT_ID || ''
-  return [prefix, clientId].join('-')
+  const clientId = process.env.HUMMINGBOT_INSTANCE_ID
+  if ((typeof clientId !== 'undefined' && clientId != null) && clientId !== '') {
+    return [prefix, clientId].join('-')
+  }
+  return prefix
 }
 
 export const loadConfig = () => {