feat: add metrics

server/routers/contentstack/languageSwitcher/query.ts

@@ -1,3 +1,5 @@
+import { metrics } from "@opentelemetry/api"
+
 import { Lang } from "@/constants/languages"
 import { baseUrls } from "@/constants/routes/baseUrls"
 import { batchRequest } from "@/lib/graphql/batchRequest"
@@ -40,6 +42,17 @@ interface LanguageSwitcherVariables {
   uid: string
 }
 
+const meter = metrics.getMeter("trpc.contentstack.languageSwitcher")
+const getLanguageSwitcherCounter = meter.createCounter(
+  "trpc.contentstack.languageSwitcher.get"
+)
+const getLanguageSwitcherSuccessCounter = meter.createCounter(
+  "trpc.contentstack.languageSwitcher.get-success"
+)
+const getLanguageSwitcherFailCounter = meter.createCounter(
+  "trpc.contentstack.languageSwitcher.get-fail"
+)
+
 async function getLanguageSwitcher(options: LanguageSwitcherVariables) {
   const variables = { uid: options.uid }
   const tagsDaDeEn = [
@@ -131,6 +144,11 @@ export const languageSwitcherQueryRouter = router({
     if (!ctx.uid || !ctx.lang) {
       return { lang: ctx.lang, urls: baseUrls }
     }
+    getLanguageSwitcherCounter.add(1, {
+      uid: ctx.uid,
+      lang: ctx.lang,
+      contentType: ctx.contentType,
+    })
     console.info(
       "contentstack.languageSwitcher start",
       JSON.stringify({
@@ -164,6 +182,13 @@ export const languageSwitcherQueryRouter = router({
       validateLanguageSwitcherData.safeParse(urls)
 
     if (!validatedLanguageSwitcherData.success) {
+      getLanguageSwitcherFailCounter.add(1, {
+        uid: ctx.uid,
+        lang: ctx.lang,
+        contentType: ctx.contentType,
+        error_type: "validation_error",
+        error: JSON.stringify(validatedLanguageSwitcherData.error),
+      })
       console.error(
         "contentstack.languageSwitcher validation error",
         JSON.stringify({
@@ -177,6 +202,11 @@ export const languageSwitcherQueryRouter = router({
       )
       return null
     }
+    getLanguageSwitcherSuccessCounter.add(1, {
+      uid: ctx.uid,
+      lang: ctx.lang,
+      contentType: ctx.contentType,
+    })
     console.info(
       "contentstack.languageSwitcher success",
       JSON.stringify({