fixup! fixup! fixup! fixup! fixup! Aligning struct fields for better memory management.

.github/workflows/autoupdate.yaml

@@ -1,4 +1,4 @@
-name: Autoupdate go.mod and go.sum
+name: Test and release
 
 on:
   workflow_dispatch:
@@ -34,16 +34,15 @@ jobs:
   # This job is responsible for running tests and linting the codebase
   test:
     name: "Unit testing"
+    # needs: [prepare]
     runs-on: ubuntu-latest
     container: golang:1
+    # container: github/super-linter:v4
     needs: [prepare]
 
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4
-        with:
-          fetch-depth: 0 # Ensure full history is checked out
-          token: ${{ secrets.GHCR_TOKEN }}
 
       - name: Install Go
         uses: actions/setup-go@v5
@@ -63,11 +62,12 @@ jobs:
       - name: Run unit tests
         run: |
           CI_RUN=${CI} make test
-          git config --global --add safe.directory /__w/graphql-monitoring-proxy/graphql-monitoring-proxy
 
+      # if go.mod or go.sum have changed then commit the changes to the repository
       - name: Commit changes
-        uses: stefanzweifel/git-auto-commit-action@v5
+        run: |
-        with:
+          git config --global user.email "github-actions[bot]@users.noreply.github.com"
-          commit_message: "Update go.mod and go.sum"
+          git config --global user.name "github-actions[bot]"
-          commit_options: "--no-verify --signoff"
+          git add go.mod go.sum
-          file_pattern: "go.mod go.sum"
+          git commit -m "Update go.mod and go.sum"
+          git push

.github/workflows/pr.yaml

@@ -15,12 +15,6 @@ on:
 env:
   GO_VERSION: ">=1.21"
 
-permissions:
-  # deployments permission to deploy GitHub pages website
-  deployments: write
-  # contents permission to update benchmark contents in gh-pages branch
-  contents: write
-
 jobs:
   # This job is responsible for preparation of the build
   # environment variables.
@@ -84,26 +78,7 @@ jobs:
           apt-get install ca-certificates make -y
           update-ca-certificates
           go mod tidy
-          git config --global --add safe.directory "$GITHUB_WORKSPACE"
 
       - name: Run unit tests
         run: |
           CI_RUN=${CI} make test
-
-      - name: Run benchmark
-        run: |
-          go test -bench=. -benchmem ./... -run=^# | tee output.txt
-
-      - name: Store benchmark result
-        uses: benchmark-action/github-action-benchmark@v1
-        with:
-          tool: "go"
-          output-file-path: output.txt
-          fail-on-alert: true
-          github-token: ${{ secrets.GITHUB_TOKEN }}
-          comment-on-alert: true
-          summary-always: true
-          # auto-push only if it's on main branch
-          auto-push: false
-          gh-pages-branch: "gh-pages"
-          benchmark-data-dir-path: "docs"

.github/workflows/test.yaml

@@ -10,15 +10,6 @@ on:
     branches:
       - "main"
 
-env:
-  GO_VERSION: ">=1.21"
-
-permissions:
-  # deployments permission to deploy GitHub pages website
-  deployments: write
-  # contents permission to update benchmark contents in gh-pages branch
-  contents: write
-
 jobs:
   shared:
     uses: telegram-bot-app/ci-scripts/.github/workflows/build-test-publish-inject.yaml@main
@@ -27,46 +18,3 @@ jobs:
       should-deploy: false
     secrets:
       ghcr-token: ${{ secrets.GHCR_TOKEN }}
-
-  test:
-    name: "Benchmarking the results"
-    needs: [shared]
-    runs-on: ubuntu-latest
-    container: golang:1
-    # container: github/super-linter:v4
-
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v4
-
-      - name: Install Go
-        uses: actions/setup-go@v5
-        with:
-          go-version: ${{env.GO_VERSION}}
-          cache-dependency-path: "**/*.sum"
-
-      - name: Install dependencies
-        run: |
-          apt-get update
-          apt-get install ca-certificates make -y
-          update-ca-certificates
-          go mod tidy
-          git config --global --add safe.directory "$GITHUB_WORKSPACE"
-
-      - name: Run benchmark
-        run: |
-          go test -bench=. -benchmem ./... -run=^# | tee output.txt
-
-      - name: Store benchmark result
-        uses: benchmark-action/github-action-benchmark@v1
-        with:
-          tool: "go"
-          output-file-path: output.txt
-          fail-on-alert: true
-          github-token: ${{ secrets.GITHUB_TOKEN }}
-          comment-on-alert: true
-          summary-always: true
-          # auto-push only if it's on main branch
-          auto-push: true
-          gh-pages-branch: "gh-pages"
-          benchmark-data-dir-path: "docs"

README.md

@@ -2,7 +2,7 @@
 
 Creates a passthrough proxy to a graphql endpoint(s), allowing you to analyse the queries and responses, producing the Prometheus metrics at a fraction of the cost - because, as we know - $0 is a fair price.
 
-This project is in active use by [telegram-bot.app](https://telegram-bot.app), and was tested with 30k queries per second on a single instance, consuming 10 MB of RAM and 0.1% CPU. [Benchmarks](https://lukaszraczylo.github.io/graphql-monitoring-proxy/dev/bench/) are available.
+This project is in active use by [telegram-bot.app](https://telegram-bot.app), and was tested with 30k queries per second on a single instance, consuming 10 MB of RAM and 0.1% CPU.
 
 ![Example of monitoring dashboard](static/monitoring-at-glance.png?raw=true)
 
@@ -28,6 +28,7 @@ This project is in active use by [telegram-bot.app](https://telegram-bot.app), a
     - [Cache operations](#cache-operations)
   - [General](#general)
     - [Metrics which matter](#metrics-which-matter)
+    - [Tracing](#tracing)
     - [Healthcheck](#healthcheck)
     - [Monitoring endpoint](#monitoring-endpoint)
 
@@ -103,7 +104,7 @@ In this case, both proxy and websockets will be available under the `/v1/graphql
 | security   | Blocking mutations in read-only mode                                  |
 | security   | Allow access only to listed URLs                                      |
 | security   | Ban / unban specific user from accessing the application              |
-| maintenance | Hasura events cleaner                                                 |
+| maintenance | Hasura event cleaner                                                 |
 
 
 ### Configuration
@@ -144,6 +145,8 @@ You can still use the non-prefixed environment variables in the spirit of the ba
 | `HASURA_EVENT_CLEANER`   | Enable the hasura event cleaner          | `false`                    |
 | `HASURA_EVENT_CLEANER_OLDER_THAN` | The interval for the hasura event cleaner (in days) | `1`                  |
 | `HASURA_EVENT_METADATA_DB` | URL to the hasura metadata database    | `postgresql://localhost:5432/hasura` |
+| `ENABLE_TRACE` | Enables tracing | `false` |
+| `TRACER_ENDPOINT` | Tracing endpoint | `localhost:4317` |
 
 ### Speed
 
@@ -293,6 +296,18 @@ With the `PURGE_METRICS_ON_CRAWL` enabled, the `graphql_proxy_requests_failed`,
 
 If you prefer more control over the metrics purging - you can enable `PURGE_METRICS_ON_TIMER` environment variable and set the interval in seconds. This will allow you to purge the metrics on a regular basis, for example every 90 seconds. It could be better solution if you have multiple crawlers checking the metrics endpoints and you want to avoid the situation when metrics are purged by for example healthcheck.
 
+#### Tracing
+
+Tracing can be enabled by setting `ENABLE_TRACE` to `true` and providing compatible with OTEL `TRACER_ENDPOINT` value ( default is `localhost:4317` ). From that moment you can include `X-Trace-Span` with content being json encoded in your requests to the proxy endpoint.
+
+The value of X-Trace-Span should be in following format:
+
+```json
+{
+ "traceparent": "00-4bf92f3577b34da6a3ce929d0e0e4736-00f067aa0ba902b7-01",
+}
+```
+
 #### Healthcheck
 
 If you'd like the `/healthz` endpoint to perform actual check for the connectivity to the graphql endpoint - set the `HEALTHCHECK_GRAPHQL_URL` environment variable to the exact URL of the graphql endpoint. The query executed will be `query { __typename }` and if the response is not `200 OK` - the healthcheck will fail. Remember that the endpoint is a full URL which you'd like to check, so it should include the protocol, host and path - for example `http://localhost:8080/v1/graphql` and it's NOT the same as value of `HOST_GRAPHQL` environment variable which should provide only the host, without path, ending with slash.

api.go

@@ -3,7 +3,6 @@ package main
 import (
 	"fmt"
 	"os"
-	"sync"
 	"time"
 
 	"github.com/goccy/go-json"
@@ -14,66 +13,55 @@ import (
 	libpack_logger "github.com/lukaszraczylo/graphql-monitoring-proxy/logging"
 )
 
-var (
+var bannedUsersIDs map[string]string = make(map[string]string)
-	bannedUsersIDs      = make(map[string]string)
-	bannedUsersIDsMutex sync.RWMutex
-)
 
 func enableApi() {
-	if !cfg.Server.EnableApi {
+	if cfg.Server.EnableApi {
-		return
+		apiserver := fiber.New(fiber.Config{
-	}
+			DisableStartupMessage: true,
-
+			AppName:               fmt.Sprintf("GraphQL Monitoring Proxy - %s v%s", libpack_config.PKG_NAME, libpack_config.PKG_VERSION),
-	apiserver := fiber.New(fiber.Config{
-		DisableStartupMessage: true,
-		AppName:               fmt.Sprintf("GraphQL Monitoring Proxy - %s v%s", libpack_config.PKG_NAME, libpack_config.PKG_VERSION),
-	})
-
-	api := apiserver.Group("/api")
-	api.Post("/user-ban", apiBanUser)
-	api.Post("/user-unban", apiUnbanUser)
-	api.Post("/cache-clear", apiClearCache)
-	api.Get("/cache-stats", apiCacheStats)
-
-	go periodicallyReloadBannedUsers()
-
-	if err := apiserver.Listen(fmt.Sprintf(":%d", cfg.Server.ApiPort)); err != nil {
-		cfg.Logger.Critical(&libpack_logger.LogMessage{
-			Message: "Can't start the service",
-			Pairs:   map[string]interface{}{"port": cfg.Server.ApiPort},
 		})
+
+		api := apiserver.Group("/api")
+		api.Post("/user-ban", apiBanUser)
+		api.Post("/user-unban", apiUnbanUser)
+		api.Post("/cache-clear", apiClearCache)
+		api.Get("/cache-stats", apiCacheStats)
+
+		go periodicallyReloadBannedUsers()
+		err := apiserver.Listen(fmt.Sprintf(":%d", cfg.Server.ApiPort))
+		if err != nil {
+			cfg.Logger.Critical(&libpack_logger.LogMessage{
+				Message: "Can't start the service",
+				Pairs:   map[string]interface{}{"port": cfg.Server.ApiPort},
+			})
+		}
 	}
 }
 
 func periodicallyReloadBannedUsers() {
-	ticker := time.NewTicker(10 * time.Second)
+	for {
-	defer ticker.Stop()
-
-	for range ticker.C {
 		loadBannedUsers()
 		cfg.Logger.Debug(&libpack_logger.LogMessage{
 			Message: "Banned users reloaded",
 			Pairs:   map[string]interface{}{"users": bannedUsersIDs},
 		})
+		<-time.After(10 * time.Second)
 	}
 }
 
 func checkIfUserIsBanned(c *fiber.Ctx, userID string) bool {
-	bannedUsersIDsMutex.RLock()
 	_, found := bannedUsersIDs[userID]
-	bannedUsersIDsMutex.RUnlock()
-
 	cfg.Logger.Debug(&libpack_logger.LogMessage{
 		Message: "Checking if user is banned",
-		Pairs:   map[string]interface{}{"user_id": userID, "banned": found},
+		Pairs:   map[string]interface{}{"user_id": userID, "found": found},
 	})
-
 	if found {
 		cfg.Logger.Info(&libpack_logger.LogMessage{
 			Message: "User is banned",
 			Pairs:   map[string]interface{}{"user_id": userID},
 		})
-		c.Status(fiber.StatusForbidden).SendString("User is banned")
+		c.Status(403).SendString("User is banned")
 	}
 	return found
 }
@@ -81,16 +69,28 @@ func checkIfUserIsBanned(c *fiber.Ctx, userID string) bool {
 func apiClearCache(c *fiber.Ctx) error {
 	cfg.Logger.Debug(&libpack_logger.LogMessage{
 		Message: "Clearing cache via API",
+		Pairs:   nil,
 	})
 	libpack_cache.CacheClear()
 	cfg.Logger.Info(&libpack_logger.LogMessage{
 		Message: "Cache cleared via API",
+		Pairs:   nil,
 	})
-	return c.SendString("OK: cache cleared")
+	c.Status(200).SendString("OK: cache cleared")
+	return nil
 }
 
 func apiCacheStats(c *fiber.Ctx) error {
-	return c.JSON(libpack_cache.GetCacheStats())
+	stats := libpack_cache.GetCacheStats()
+	err := c.JSON(stats)
+	if err != nil {
+		cfg.Logger.Error(&libpack_logger.LogMessage{
+			Message: "Can't marshal cache stats",
+			Pairs:   map[string]interface{}{"error": err.Error()},
+		})
+		return err
+	}
+	return nil
 }
 
 type apiBanUserRequest struct {
@@ -100,92 +100,71 @@ type apiBanUserRequest struct {
 
 func apiBanUser(c *fiber.Ctx) error {
 	var req apiBanUserRequest
-	if err := c.BodyParser(&req); err != nil {
+	err := c.BodyParser(&req)
+	if err != nil {
 		cfg.Logger.Error(&libpack_logger.LogMessage{
 			Message: "Can't parse the ban user request",
 			Pairs:   map[string]interface{}{"error": err.Error()},
 		})
-		return c.Status(fiber.StatusBadRequest).SendString("Invalid request payload")
+		return err
 	}
-
-	if req.UserID == "" || req.Reason == "" {
-		return c.Status(fiber.StatusBadRequest).SendString("user_id and reason are required")
-	}
-
-	bannedUsersIDsMutex.Lock()
 	bannedUsersIDs[req.UserID] = req.Reason
-	bannedUsersIDsMutex.Unlock()
-
 	cfg.Logger.Info(&libpack_logger.LogMessage{
 		Message: "Banned user",
 		Pairs:   map[string]interface{}{"user_id": req.UserID, "reason": req.Reason},
 	})
-
+	storeBannedUsers()
-	if err := storeBannedUsers(); err != nil {
+	c.Status(200).SendString("OK: user banned")
-		return c.Status(fiber.StatusInternalServerError).SendString("Failed to store banned users")
+	return nil
-	}
-
-	return c.SendString("OK: user banned")
 }
 
 func apiUnbanUser(c *fiber.Ctx) error {
 	var req apiBanUserRequest
-	if err := c.BodyParser(&req); err != nil {
+	err := c.BodyParser(&req)
+	if err != nil {
 		cfg.Logger.Error(&libpack_logger.LogMessage{
 			Message: "Can't parse the unban user request",
 			Pairs:   map[string]interface{}{"error": err.Error()},
 		})
-		return c.Status(fiber.StatusBadRequest).SendString("Invalid request payload")
+		return err
 	}
-
-	if req.UserID == "" {
-		return c.Status(fiber.StatusBadRequest).SendString("user_id is required")
-	}
-
-	bannedUsersIDsMutex.Lock()
 	delete(bannedUsersIDs, req.UserID)
-	bannedUsersIDsMutex.Unlock()
-
 	cfg.Logger.Info(&libpack_logger.LogMessage{
 		Message: "Unbanned user",
 		Pairs:   map[string]interface{}{"user_id": req.UserID},
 	})
-
+	storeBannedUsers()
-	if err := storeBannedUsers(); err != nil {
+	c.Status(200).SendString("OK: user unbanned")
-		return c.Status(fiber.StatusInternalServerError).SendString("Failed to store banned users")
+	return nil
-	}
-
-	return c.SendString("OK: user unbanned")
 }
 
-func storeBannedUsers() error {
+func storeBannedUsers() {
 	fileLock := flock.New(fmt.Sprintf("%s.lock", cfg.Api.BannedUsersFile))
-	if err := lockFile(fileLock); err != nil {
+	err := fileLock.Lock()
-		return err
+	if err != nil {
+		cfg.Logger.Error(&libpack_logger.LogMessage{
+			Message: "Can't lock the file",
+			Pairs:   map[string]interface{}{"error": err.Error()},
+		})
+		return
 	}
 	defer fileLock.Unlock()
-
-	bannedUsersIDsMutex.RLock()
 	data, err := json.Marshal(bannedUsersIDs)
-	bannedUsersIDsMutex.RUnlock()
-
 	if err != nil {
 		cfg.Logger.Error(&libpack_logger.LogMessage{
 			Message: "Can't marshal banned users",
 			Pairs:   map[string]interface{}{"error": err.Error()},
 		})
-		return err
+		return
 	}
-
+	err = os.WriteFile(cfg.Api.BannedUsersFile, data, 0644)
-	if err := os.WriteFile(cfg.Api.BannedUsersFile, data, 0644); err != nil {
+	if err != nil {
 		cfg.Logger.Error(&libpack_logger.LogMessage{
 			Message: "Can't write banned users to file",
 			Pairs:   map[string]interface{}{"error": err.Error()},
 		})
-		return err
+		return
 	}
-
-	return nil
 }
 
 func loadBannedUsers() {
@@ -194,9 +173,19 @@ func loadBannedUsers() {
 			Message: "Banned users file doesn't exist - creating it",
 			Pairs:   map[string]interface{}{"file": cfg.Api.BannedUsersFile},
 		})
-		if err := os.WriteFile(cfg.Api.BannedUsersFile, []byte("{}"), 0644); err != nil {
+		_, err := os.Create(cfg.Api.BannedUsersFile)
+		if err != nil {
 			cfg.Logger.Error(&libpack_logger.LogMessage{
-				Message: "Can't create and write to the file",
+				Message: "Can't create the file",
+				Pairs:   map[string]interface{}{"error": err.Error()},
+			})
+			return
+		}
+		// write empty json to the file
+		err = os.WriteFile(cfg.Api.BannedUsersFile, []byte("{}"), 0644)
+		if err != nil {
+			cfg.Logger.Error(&libpack_logger.LogMessage{
+				Message: "Can't write to the file",
 				Pairs:   map[string]interface{}{"error": err.Error()},
 			})
 			return
@@ -204,7 +193,8 @@ func loadBannedUsers() {
 	}
 
 	fileLock := flock.New(fmt.Sprintf("%s.lock", cfg.Api.BannedUsersFile))
-	if err := lockFileRead(fileLock); err != nil {
+	err := fileLock.RLock() // Use RLock for read lock
+	if err != nil {
 		cfg.Logger.Error(&libpack_logger.LogMessage{
 			Message: "Can't lock the file [load]",
 			Pairs:   map[string]interface{}{"error": err.Error()},
@@ -221,39 +211,12 @@ func loadBannedUsers() {
 		})
 		return
 	}
-
+	err = json.Unmarshal(data, &bannedUsersIDs)
-	var newBannedUsers map[string]string
+	if err != nil {
-	if err := json.Unmarshal(data, &newBannedUsers); err != nil {
 		cfg.Logger.Error(&libpack_logger.LogMessage{
 			Message: "Can't unmarshal banned users",
 			Pairs:   map[string]interface{}{"error": err.Error()},
 		})
 		return
 	}
-
-	bannedUsersIDsMutex.Lock()
-	bannedUsersIDs = newBannedUsers
-	bannedUsersIDsMutex.Unlock()
-}
-
-func lockFile(fileLock *flock.Flock) error {
-	if err := fileLock.Lock(); err != nil {
-		cfg.Logger.Error(&libpack_logger.LogMessage{
-			Message: "Can't lock the file",
-			Pairs:   map[string]interface{}{"error": err.Error()},
-		})
-		return err
-	}
-	return nil
-}
-
-func lockFileRead(fileLock *flock.Flock) error {
-	if err := fileLock.RLock(); err != nil {
-		cfg.Logger.Error(&libpack_logger.LogMessage{
-			Message: "Can't lock the file for reading",
-			Pairs:   map[string]interface{}{"error": err.Error()},
-		})
-		return err
-	}
-	return nil
 }

cache/cache.go

@@ -1,9 +1,6 @@
 package libpack_cache
 
 import (
-	"bytes"
-	"compress/gzip"
-	"io"
 	"sync/atomic"
 	"time"
 
@@ -58,7 +55,7 @@ func EnableCache(cfg *CacheConfig) {
 	}
 	cacheStats = &CacheStats{}
 	if ShouldUseRedisCache(cfg) {
-		cfg.Logger.Debug(&libpack_logger.LogMessage{
+		cfg.Logger.Info(&libpack_logger.LogMessage{
 			Message: "Using Redis cache",
 		})
 		cfg.Client = libpack_cache_redis.New(&libpack_cache_redis.RedisClientConfig{
@@ -67,7 +64,7 @@ func EnableCache(cfg *CacheConfig) {
 			RedisPassword: cfg.Redis.Password,
 		})
 	} else {
-		cfg.Logger.Debug(&libpack_logger.LogMessage{
+		cfg.Logger.Info(&libpack_logger.LogMessage{
 			Message: "Using in-memory cache",
 		})
 		cfg.Client = libpack_cache_memory.New(time.Duration(cfg.TTL) * time.Second)
@@ -79,28 +76,6 @@ func CacheLookup(hash string) []byte {
 	obj, found := config.Client.Get(hash)
 	if found {
 		atomic.AddInt64(&cacheStats.CacheHits, 1)
-		// If the cached data is compressed, decompress it
-		if len(obj) > 2 && obj[0] == 0x1f && obj[1] == 0x8b {
-			reader, err := gzip.NewReader(bytes.NewReader(obj))
-			if err != nil {
-				config.Logger.Error(&libpack_logger.LogMessage{
-					Message: "Failed to create gzip reader for cached data",
-					Pairs:   map[string]interface{}{"error": err.Error(), "hash": hash},
-				})
-				return nil
-			}
-			defer reader.Close()
-
-			decompressed, err := io.ReadAll(reader)
-			if err != nil {
-				config.Logger.Error(&libpack_logger.LogMessage{
-					Message: "Failed to decompress cached data",
-					Pairs:   map[string]interface{}{"error": err.Error(), "hash": hash},
-				})
-				return nil
-			}
-			return decompressed
-		}
 		return obj
 	}
 	atomic.AddInt64(&cacheStats.CacheMisses, 1)

cache/cache_bench_test.go

@@ -4,8 +4,8 @@ import (
 	"testing"
 	"time"
 
-	"github.com/alicebob/miniredis/v2"
 	libpack_cache_memory "github.com/lukaszraczylo/graphql-monitoring-proxy/cache/memory"
+	libpack_cache_redis "github.com/lukaszraczylo/graphql-monitoring-proxy/cache/redis"
 	libpack_logger "github.com/lukaszraczylo/graphql-monitoring-proxy/logging"
 )
 
@@ -20,7 +20,6 @@ func BenchmarkCacheLookupInMemory(b *testing.B) {
 		Client: libpack_cache_memory.New(5 * time.Minute),
 		TTL:    5,
 	}
-	EnableCache(config)
 
 	hash := "00000000000000000000000000000000001337"
 	data := []byte("it's fine.")
@@ -37,18 +36,16 @@ func BenchmarkCacheLookupInMemory(b *testing.B) {
 }
 
 func BenchmarkCacheLookupRedis(b *testing.B) {
-	redis_server, err := miniredis.Run()
+	mockedCache := libpack_cache_redis.New(&libpack_cache_redis.RedisClientConfig{
-	if err != nil {
+		RedisServer: redisMockServer.Addr(),
-		panic(err)
+		RedisDB:     0,
-	}
+	})
+
 	config = &CacheConfig{
 		Logger: libpack_logger.New(),
+		Client: mockedCache,
 		TTL:    5,
 	}
-	config.Redis.DB = 0
-	config.Redis.URL = redis_server.Addr()
-	config.Redis.Enable = true
-	EnableCache(config)
 
 	hash := "00000000000000000000000000000000001337"
 	data := []byte("it's fine.")
@@ -70,7 +67,6 @@ func BenchmarkCacheStoreInMemory(b *testing.B) {
 		Client: libpack_cache_memory.New(5 * time.Minute),
 		TTL:    5,
 	}
-	EnableCache(config)
 
 	hash := "00000000000000000000000000000000001337"
 	data := []byte("it's fine.")
@@ -86,19 +82,16 @@ func BenchmarkCacheStoreInMemory(b *testing.B) {
 }
 
 func BenchmarkCacheStoreRedis(b *testing.B) {
-	redis_server, err := miniredis.Run()
+	mockedCache := libpack_cache_redis.New(&libpack_cache_redis.RedisClientConfig{
-	if err != nil {
+		RedisServer: redisMockServer.Addr(),
-		panic(err)
+		RedisDB:     0,
-	}
+	})
 
 	config = &CacheConfig{
 		Logger: libpack_logger.New(),
+		Client: mockedCache,
 		TTL:    5,
 	}
-	config.Redis.DB = 0
-	config.Redis.URL = redis_server.Addr()
-	config.Redis.Enable = true
-	EnableCache(config)
 
 	hash := "00000000000000000000000000000000001337"
 	data := []byte("it's fine.")

cache/cache_test.go

@@ -1,12 +1,10 @@
 package libpack_cache
 
 import (
-	"fmt"
-	"sync"
 	"time"
 
-	"github.com/alicebob/miniredis/v2"
 	libpack_cache_memory "github.com/lukaszraczylo/graphql-monitoring-proxy/cache/memory"
+	libpack_cache_redis "github.com/lukaszraczylo/graphql-monitoring-proxy/cache/redis"
 	libpack_logger "github.com/lukaszraczylo/graphql-monitoring-proxy/logging"
 )
 
@@ -60,15 +58,23 @@ func (suite *Tests) Test_cacheLookupInmemory() {
 }
 
 func (suite *Tests) Test_cacheLookupRedis() {
+	// redis_server := envutil.Getenv("REDIS_SERVER", "localhost:6379")
+	// config.Client = libpack_cache_redis.NewClient(&libpack_cache_redis.RedisClientConfig{
+	// 	RedisServer:   redis_server,
+	// 	RedisPassword: "",
+	// 	RedisDB:       0,
+	// })
+
+	mockedCache := libpack_cache_redis.New(&libpack_cache_redis.RedisClientConfig{
+		RedisServer: redisMockServer.Addr(),
+		RedisDB:     0,
+	})
 
 	config = &CacheConfig{
 		Logger: libpack_logger.New(),
+		Client: mockedCache,
 		TTL:    5,
 	}
-	config.Redis.DB = 0
-	config.Redis.URL = redisMockServer.Addr()
-	config.Redis.Enable = true
-	EnableCache(config)
 
 	type args struct {
 		hash string
@@ -111,96 +117,3 @@ func (suite *Tests) Test_cacheLookupRedis() {
 		})
 	}
 }
-
-func (suite *Tests) Test_cacheConcurrency() {
-	config = &CacheConfig{
-		Logger: libpack_logger.New(),
-		Client: libpack_cache_memory.New(5 * time.Second),
-		TTL:    5,
-	}
-
-	const numGoroutines = 10
-	const numOperations = 1000
-
-	var wg sync.WaitGroup
-	wg.Add(numGoroutines)
-
-	for i := 0; i < numGoroutines; i++ {
-		go func(id int) {
-			defer wg.Done()
-			for j := 0; j < numOperations; j++ {
-				key := fmt.Sprintf("key-%d-%d", id, j)
-				value := []byte(fmt.Sprintf("value-%d-%d", id, j))
-				CacheStore(key, value)
-				retrieved := CacheLookup(key)
-				assert.Equal(string(value), string(retrieved), "Concurrent cache operation failed")
-			}
-		}(i)
-	}
-
-	wg.Wait()
-}
-
-// func (suite *Tests) Test_cacheEviction() {
-// 	config = &CacheConfig{
-// 		Logger: libpack_logger.New(),
-// 		Client: libpack_cache_memory.New(3 * time.Second), // 3 seconds TTL
-// 		TTL:    3,
-// 	}
-
-// 	// Fill the cache
-// 	for i := 0; i < 20; i++ {
-// 		key := fmt.Sprintf("key-%d", i)
-// 		value := []byte(fmt.Sprintf("value-%d", i))
-// 		CacheStore(key, value)
-// 		time.Sleep(100 * time.Millisecond) // Ensure different creation times
-// 	}
-
-// 	// Wait for the TTL to expire for the first half of the items
-// 	time.Sleep(3100 * time.Millisecond)
-
-// 	// Check that the oldest items have been evicted
-// 	for i := 0; i < 10; i++ {
-// 		key := fmt.Sprintf("key-%d", i)
-// 		retrieved := CacheLookup(key)
-// 		assert.Nil(retrieved, fmt.Sprintf("Old item %s should have been evicted", key))
-// 	}
-
-// 	// Check that the newer items are still in the cache
-// 	for i := 10; i < 20; i++ {
-// 		key := fmt.Sprintf("key-%d", i)
-// 		expected := []byte(fmt.Sprintf("value-%d", i))
-// 		retrieved := CacheLookup(key)
-// 		assert.Equal(expected, retrieved, fmt.Sprintf("Recent item %s should be in cache", key))
-// 	}
-// }
-
-func (suite *Tests) Test_cacheRedisFailure() {
-	mr, err := miniredis.Run()
-	if err != nil {
-		suite.T().Fatal(err)
-	}
-	defer mr.Close()
-
-	config = &CacheConfig{
-		Logger: libpack_logger.New(),
-		TTL:    5,
-	}
-	config.Redis.DB = 0
-	config.Redis.URL = mr.Addr()
-	config.Redis.Enable = true
-	EnableCache(config)
-
-	// Test normal operation
-	CacheStore("test-key", []byte("test-value"))
-	retrieved := CacheLookup("test-key")
-	assert.Equal([]byte("test-value"), retrieved)
-
-	// Simulate Redis failure
-	mr.Close()
-
-	// Operations should not panic, but should return errors or nil values
-	CacheStore("another-key", []byte("another-value"))
-	retrieved = CacheLookup("another-key")
-	assert.Nil(retrieved, "Lookup should return nil when Redis is down")
-}

cache/memory/memory.go

@@ -69,17 +69,11 @@ func (c *Cache) Set(key string, value []byte, ttl time.Duration) {
 
 func (c *Cache) Get(key string) ([]byte, bool) {
 	entry, ok := c.entries.Load(key)
-	if !ok {
+	if !ok || entry.(CacheEntry).ExpiresAt.Before(time.Now()) {
 		return nil, false
 	}
-
+	compressedValue := entry.(CacheEntry).Value
-	cacheEntry := entry.(CacheEntry)
+	value, err := c.decompress(compressedValue)
-	if cacheEntry.ExpiresAt.Before(time.Now()) {
-		c.entries.Delete(key)
-		return nil, false
-	}
-
-	value, err := c.decompress(cacheEntry.Value)
 	if err != nil {
 		log.Printf("Error decompressing value for key %s: %v", key, err)
 		return nil, false

cache/memory/memory_bench_test.go

@@ -1,7 +1,6 @@
 package libpack_cache_memory
 
 import (
-	"fmt"
 	"testing"
 	"time"
 )
@@ -53,30 +52,3 @@ func BenchmarkMemCacheStats(b *testing.B) {
 	cache.Set(key, value, 5*time.Second) // Pre-set a value to retrieve
 	cache.Get(key)
 }
-
-func BenchmarkCacheSet(b *testing.B) {
-	cache := New(5 * time.Second)
-	b.ResetTimer()
-	for i := 0; i < b.N; i++ {
-		cache.Set(fmt.Sprintf("key-%d", i), []byte("value"), 5*time.Second)
-	}
-}
-
-func BenchmarkCacheGet(b *testing.B) {
-	cache := New(5 * time.Second)
-	cache.Set("test-key", []byte("test-value"), 5*time.Second)
-	b.ResetTimer()
-	for i := 0; i < b.N; i++ {
-		cache.Get("test-key")
-	}
-}
-
-func BenchmarkCacheDelete(b *testing.B) {
-	cache := New(5 * time.Second)
-	b.ResetTimer()
-	for i := 0; i < b.N; i++ {
-		key := fmt.Sprintf("key-%d", i)
-		cache.Set(key, []byte("value"), 5*time.Second)
-		cache.Delete(key)
-	}
-}

cache/memory/memory_test.go

@@ -1,8 +1,6 @@
 package libpack_cache_memory
 
 import (
-	"fmt"
-	"sync"
 	"testing"
 	"time"
 
@@ -112,57 +110,3 @@ func (suite *MemoryTestSuite) Test_CacheExpire() {
 		})
 	}
 }
-
-func (suite *MemoryTestSuite) Test_ConcurrentReadWrite() {
-	cache := New(5 * time.Second)
-	const numGoroutines = 100
-	const numOperations = 1000
-
-	var wg sync.WaitGroup
-	wg.Add(numGoroutines)
-
-	for i := 0; i < numGoroutines; i++ {
-		go func(id int) {
-			defer wg.Done()
-			for j := 0; j < numOperations; j++ {
-				key := fmt.Sprintf("key-%d-%d", id, j)
-				value := []byte(fmt.Sprintf("value-%d-%d", id, j))
-
-				if j%2 == 0 {
-					cache.Set(key, value, 5*time.Second)
-				} else {
-					_, _ = cache.Get(key)
-				}
-			}
-		}(i)
-	}
-
-	wg.Wait()
-}
-
-func (suite *MemoryTestSuite) Test_LargeItems() {
-	cache := New(5 * time.Second)
-	largeValue := make([]byte, 10*1024*1024) // 10MB
-	cache.Set("large-key", largeValue, 5*time.Second)
-
-	retrieved, found := cache.Get("large-key")
-	suite.Assert().True(found)
-	suite.Assert().Equal(largeValue, retrieved)
-}
-
-func (suite *MemoryTestSuite) Test_ZeroTTL() {
-	cache := New(5 * time.Second)
-	cache.Set("zero-ttl", []byte("value"), 0)
-
-	_, found := cache.Get("zero-ttl")
-	suite.Assert().False(found, "Item with zero TTL should not be stored")
-}
-
-func (suite *MemoryTestSuite) Test_LongTTL() {
-	cache := New(5 * time.Second)
-	cache.Set("long-ttl", []byte("value"), 24*365*time.Hour) // 1 year
-
-	retrieved, found := cache.Get("long-ttl")
-	suite.Assert().True(found)
-	suite.Assert().Equal([]byte("value"), retrieved)
-}

details.go

@@ -11,14 +11,18 @@ import (
 	libpack_monitoring "github.com/lukaszraczylo/graphql-monitoring-proxy/monitoring"
 )
 
-const defaultValue = "-"
+func extractClaimsFromJWTHeader(authorization string) (usr string, role string) {
+	usr, role = "-", "-"
 
-var emptyMetrics = map[string]string{}
+	handleError := func(msg string, details map[string]interface{}) {
+		cfg.Monitoring.Increment(libpack_monitoring.MetricsFailed, nil)
+		cfg.Logger.Error(&libpack_logger.LogMessage{
+			Message: msg,
+			Pairs:   details,
+		})
+	}
 
-func extractClaimsFromJWTHeader(authorization string) (usr, role string) {
+	tokenParts := strings.Split(authorization, ".")
-	usr, role = defaultValue, defaultValue
-
-	tokenParts := strings.SplitN(authorization, ".", 3)
 	if len(tokenParts) != 3 {
 		handleError("Can't split the token", map[string]interface{}{"token": authorization})
 		return
@@ -36,30 +40,18 @@ func extractClaimsFromJWTHeader(authorization string) (usr, role string) {
 		return
 	}
 
-	usr = extractClaim(claimMap, cfg.Client.JWTUserClaimPath, "user id")
+	extractClaim := func(claimPath string, target *string, name string) {
-	role = extractClaim(claimMap, cfg.Client.JWTRoleClaimPath, "role")
+		if len(claimPath) > 0 {
+			var ok bool
+			*target, ok = ask.For(claimMap, claimPath).String("-")
+			if !ok {
+				handleError(fmt.Sprintf("Can't find the %s", name), map[string]interface{}{"claim_map": claimMap, "path": claimPath})
+			}
+		}
+	}
+
+	extractClaim(cfg.Client.JWTUserClaimPath, &usr, "user id")
+	extractClaim(cfg.Client.JWTRoleClaimPath, &role, "role")
 
 	return
 }
-
-func extractClaim(claimMap map[string]interface{}, claimPath, name string) string {
-	if claimPath == "" {
-		return defaultValue
-	}
-
-	value, ok := ask.For(claimMap, claimPath).String(defaultValue)
-	if !ok {
-		handleError(fmt.Sprintf("Can't find the %s", name), map[string]interface{}{"claim_map": claimMap, "path": claimPath})
-		return defaultValue
-	}
-
-	return value
-}
-
-func handleError(msg string, details map[string]interface{}) {
-	cfg.Monitoring.Increment(libpack_monitoring.MetricsFailed, emptyMetrics)
-	cfg.Logger.Error(&libpack_logger.LogMessage{
-		Message: msg,
-		Pairs:   details,
-	})
-}

events.go

@@ -5,84 +5,77 @@ import (
 	"fmt"
 	"time"
 
-	"github.com/jackc/pgx/v5/pgxpool"
+	"github.com/jackc/pgx/v5"
 	libpack_logger "github.com/lukaszraczylo/graphql-monitoring-proxy/logging"
 )
 
-const (
-	initialDelay    = 60 * time.Second
-	cleanupInterval = 1 * time.Hour
-)
-
-var delQueries = [...]string{
-	"DELETE FROM hdb_catalog.event_invocation_logs WHERE created_at < NOW() - interval '%d days';",
-	"DELETE FROM hdb_catalog.event_log WHERE created_at < NOW() - interval '%d days';",
-	"DELETE FROM hdb_catalog.hdb_action_log WHERE created_at < NOW() - INTERVAL '%d days';",
-	"DELETE FROM hdb_catalog.hdb_cron_event_invocation_logs WHERE created_at < NOW() - INTERVAL '%d days';",
-	"DELETE FROM hdb_catalog.hdb_scheduled_event_invocation_logs WHERE created_at < NOW() - INTERVAL '%d days';",
-}
-
 func enableHasuraEventCleaner() {
-	if !cfg.HasuraEventCleaner.Enable {
+	if cfg.HasuraEventCleaner.Enable {
-		return
+		if cfg.HasuraEventCleaner.EventMetadataDb == "" {
-	}
+			cfg.Logger.Warning(&libpack_logger.LogMessage{
-
+				Message: "Event metadata db URL not specified, event cleaner not active",
-	if cfg.HasuraEventCleaner.EventMetadataDb == "" {
+				Pairs:   nil,
-		cfg.Logger.Warning(&libpack_logger.LogMessage{
-			Message: "Event metadata db URL not specified, event cleaner not active",
-		})
-		return
-	}
-
-	cfg.Logger.Info(&libpack_logger.LogMessage{
-		Message: "Event cleaner enabled",
-		Pairs:   map[string]interface{}{"interval_in_days": cfg.HasuraEventCleaner.ClearOlderThan},
-	})
-
-	go func() {
-		pool, err := pgxpool.New(context.Background(), cfg.HasuraEventCleaner.EventMetadataDb)
-		if err != nil {
-			cfg.Logger.Error(&libpack_logger.LogMessage{
-				Message: "Failed to create connection pool",
-				Pairs:   map[string]interface{}{"error": err.Error()},
 			})
 			return
 		}
-		defer pool.Close()
 
-		time.Sleep(initialDelay)
+		ticker := time.NewTicker(1 * time.Hour)
+		defer ticker.Stop()
+		cfg.Logger.Info(&libpack_logger.LogMessage{
+			Message: "Event cleaner enabled",
+			Pairs:   map[string]interface{}{"interval_in_days": cfg.HasuraEventCleaner.ClearOlderThan},
+		})
 
+		time.Sleep(60 * time.Second) // wait for everything to start and settle down
 		cfg.Logger.Info(&libpack_logger.LogMessage{
 			Message: "Initial cleanup of old events",
+			Pairs:   nil,
 		})
-		cleanEvents(pool)
+		cleanEvents()
 
-		ticker := time.NewTicker(cleanupInterval)
+		for {
-		defer ticker.Stop()
+			select {
-
+			case <-ticker.C:
-		for range ticker.C {
+				cfg.Logger.Info(&libpack_logger.LogMessage{
-			cfg.Logger.Info(&libpack_logger.LogMessage{
+					Message: "Cleaning up old events",
-				Message: "Cleaning up old events",
+					Pairs:   nil,
-			})
+				})
-			cleanEvents(pool)
+				cleanEvents()
-		}
+			}
-	}()
-}
-
-func cleanEvents(pool *pgxpool.Pool) {
-	ctx := context.Background()
-	for _, query := range delQueries {
-		_, err := pool.Exec(ctx, fmt.Sprintf(query, cfg.HasuraEventCleaner.ClearOlderThan))
-		if err != nil {
-			cfg.Logger.Error(&libpack_logger.LogMessage{
-				Message: "Failed to execute query",
-				Pairs:   map[string]interface{}{"query": query, "error": err.Error()},
-			})
-		} else {
-			cfg.Logger.Debug(&libpack_logger.LogMessage{
-				Message: "Successfully executed query",
-				Pairs:   map[string]interface{}{"query": query},
-			})
 		}
 	}
 }
+
+func cleanEvents() {
+	conn, err := pgx.Connect(context.Background(), cfg.HasuraEventCleaner.EventMetadataDb)
+	if err != nil {
+		cfg.Logger.Error(&libpack_logger.LogMessage{
+			Message: "Failed to connect to event metadata db",
+			Pairs:   map[string]interface{}{"error": err},
+		})
+		return
+	}
+	defer conn.Close(context.Background())
+
+	delQueries := []string{
+		fmt.Sprintf("DELETE FROM hdb_catalog.event_invocation_logs WHERE created_at < now() - interval '%d days';", cfg.HasuraEventCleaner.ClearOlderThan),
+		fmt.Sprintf("DELETE FROM hdb_catalog.event_log WHERE created_at < now() - interval '%d days';", cfg.HasuraEventCleaner.ClearOlderThan),
+		fmt.Sprintf("DELETE FROM hdb_catalog.hdb_action_log WHERE created_at < NOW() - INTERVAL '%d days';", cfg.HasuraEventCleaner.ClearOlderThan),
+		fmt.Sprintf("DELETE FROM hdb_catalog.hdb_cron_event_invocation_logs WHERE created_at < NOW() - INTERVAL '%d days';", cfg.HasuraEventCleaner.ClearOlderThan),
+		fmt.Sprintf("DELETE FROM hdb_catalog.hdb_scheduled_event_invocation_logs WHERE created_at < NOW() - INTERVAL '%d days';", cfg.HasuraEventCleaner.ClearOlderThan),
+	}
+
+	for _, query := range delQueries {
+		_, err := conn.Exec(context.Background(), query)
+		if err != nil {
+			cfg.Logger.Debug(&libpack_logger.LogMessage{
+				Message: "Failed to execute query",
+				Pairs:   map[string]interface{}{"query": query, "error": err},
+			})
+		}
+	}
+	cfg.Logger.Info(&libpack_logger.LogMessage{
+		Message: "Old events cleaned up",
+		Pairs:   nil,
+	})
+}

go.mod

@@ -1,55 +1,69 @@
 module github.com/lukaszraczylo/graphql-monitoring-proxy
 
-go 1.22.4
+go 1.21
 
 require (
-	github.com/VictoriaMetrics/metrics v1.35.1
+	github.com/VictoriaMetrics/metrics v1.33.1
 	github.com/alicebob/miniredis/v2 v2.33.0
 	github.com/avast/retry-go/v4 v4.6.0
 	github.com/goccy/go-json v0.10.3
-	github.com/gofiber/fiber/v2 v2.52.5
+	github.com/gofiber/fiber/v2 v2.52.4
-	github.com/gofrs/flock v0.12.1
+	github.com/gofrs/flock v0.8.1
 	github.com/google/uuid v1.6.0
-	github.com/gookit/goutil v0.6.16
+	github.com/gookit/goutil v0.6.15
 	github.com/graphql-go/graphql v0.8.1
 	github.com/jackc/pgx/v5 v5.6.0
 	github.com/lukaszraczylo/ask v0.0.0-20230927103145-2ff1123b4415
-	github.com/lukaszraczylo/go-ratecounter v0.1.12
+	github.com/lukaszraczylo/go-ratecounter v0.1.8
-	github.com/lukaszraczylo/go-simple-graphql v1.2.19
+	github.com/lukaszraczylo/go-simple-graphql v1.2.14
-	github.com/redis/go-redis/v9 v9.6.1
+	github.com/redis/go-redis/v9 v9.5.3
 	github.com/stretchr/testify v1.9.0
 	github.com/valyala/fasthttp v1.55.0
+	go.opentelemetry.io/otel v1.27.0
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.27.0
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.27.0
+	go.opentelemetry.io/otel/sdk v1.27.0
+	go.opentelemetry.io/otel/trace v1.27.0
 )
 
 require (
 	github.com/alicebob/gopher-json v0.0.0-20200520072559-a9ecdc9d1d3a // indirect
 	github.com/andybalholm/brotli v1.1.0 // indirect
+	github.com/cenkalti/backoff/v4 v4.3.0 // indirect
 	github.com/cespare/xxhash/v2 v2.3.0 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f // indirect
+	github.com/go-logr/logr v1.4.2 // indirect
+	github.com/go-logr/stdr v1.2.2 // indirect
 	github.com/gookit/color v1.5.4 // indirect
+	github.com/grpc-ecosystem/grpc-gateway/v2 v2.20.0 // indirect
 	github.com/jackc/pgpassfile v1.0.0 // indirect
 	github.com/jackc/pgservicefile v0.0.0-20240606120523-5a60cdf6a761 // indirect
-	github.com/jackc/puddle/v2 v2.2.1 // indirect
 	github.com/klauspost/compress v1.17.9 // indirect
-	github.com/kr/text v0.2.0 // indirect
 	github.com/mattn/go-colorable v0.1.13 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
-	github.com/mattn/go-runewidth v0.0.16 // indirect
+	github.com/mattn/go-runewidth v0.0.15 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/rivo/uniseg v0.4.7 // indirect
-	github.com/rogpeppe/go-internal v1.12.0 // indirect
+	github.com/rs/zerolog v1.33.0 // indirect
 	github.com/valyala/bytebufferpool v1.0.0 // indirect
 	github.com/valyala/fastrand v1.1.0 // indirect
 	github.com/valyala/histogram v1.2.0 // indirect
 	github.com/valyala/tcplisten v1.0.0 // indirect
 	github.com/xo/terminfo v0.0.0-20220910002029-abceb7e1c41e // indirect
 	github.com/yuin/gopher-lua v1.1.1 // indirect
-	golang.org/x/crypto v0.26.0 // indirect
+	go.opentelemetry.io/otel/metric v1.27.0 // indirect
-	golang.org/x/net v0.28.0 // indirect
+	go.opentelemetry.io/proto/otlp v1.3.1 // indirect
-	golang.org/x/sync v0.8.0 // indirect
+	golang.org/x/crypto v0.24.0 // indirect
-	golang.org/x/sys v0.23.0 // indirect
+	golang.org/x/exp v0.0.0-20240506185415-9bf2ced13842 // indirect
-	golang.org/x/term v0.23.0 // indirect
+	golang.org/x/net v0.26.0 // indirect
-	golang.org/x/text v0.17.0 // indirect
+	golang.org/x/sync v0.7.0 // indirect
+	golang.org/x/sys v0.21.0 // indirect
+	golang.org/x/term v0.21.0 // indirect
+	golang.org/x/text v0.16.0 // indirect
+	google.golang.org/genproto/googleapis/api v0.0.0-20240617180043-68d350f18fd4 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20240617180043-68d350f18fd4 // indirect
+	google.golang.org/grpc v1.64.0 // indirect
+	google.golang.org/protobuf v1.34.2 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )

go.sum

@@ -1,5 +1,5 @@
-github.com/VictoriaMetrics/metrics v1.35.1 h1:o84wtBKQbzLdDy14XeskkCZih6anG+veZ1SwJHFGwrU=
+github.com/VictoriaMetrics/metrics v1.33.1 h1:CNV3tfm2Kpv7Y9W3ohmvqgFWPR55tV2c7M2U6OIo+UM=
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@@ -89,22 +106,47 @@ github.com/xo/terminfo v0.0.0-20220910002029-abceb7e1c41e h1:JVG44RsyaB9T2KIHavM
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-golang.org/x/sys v0.23.0 h1:YfKFowiIMvtgl1UERQoTPPToxltDeZfbj4H7dVUCwmM=
+golang.org/x/sys v0.12.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.23.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/sys v0.21.0 h1:rF+pYz3DAGSQAxAu1CbC7catZg4ebC4UIeIhKxBZvws=
-golang.org/x/term v0.23.0 h1:F6D4vR+EHoL9/sWAWgAR1H2DcHr4PareCbAaCo1RpuU=
+golang.org/x/sys v0.21.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
-golang.org/x/term v0.23.0/go.mod h1:DgV24QBUrK6jhZXl+20l6UWznPlwAHm1Q1mGHtydmSk=
+golang.org/x/term v0.21.0 h1:WVXCp+/EBEHOj53Rvu+7KiT/iElMrO8ACK16SMZ3jaA=
-golang.org/x/text v0.17.0 h1:XtiM5bkSOt+ewxlOE/aE/AKEHibwj/6gvWMl9Rsh0Qc=
+golang.org/x/term v0.21.0/go.mod h1:ooXLefLobQVslOqselCNF4SxFAaoS6KujMbsGzSDmX0=
-golang.org/x/text v0.17.0/go.mod h1:BuEKDfySbSR4drPmRPG/7iBdf8hvFMuRexcpahXilzY=
+golang.org/x/text v0.16.0 h1:a94ExnEXNtEwYLGJSIUxnWoxoRz/ZcCsV63ROupILh4=
+golang.org/x/text v0.16.0/go.mod h1:GhwF1Be+LQoKShO3cGOHzqOgRrGaYc9AvblQOmPVHnI=
+google.golang.org/genproto/googleapis/api v0.0.0-20240617180043-68d350f18fd4 h1:MuYw1wJzT+ZkybKfaOXKp5hJiZDn2iHaXRw0mRYdHSc=
+google.golang.org/genproto/googleapis/api v0.0.0-20240617180043-68d350f18fd4/go.mod h1:px9SlOOZBg1wM1zdnr8jEL4CNGUBZ+ZKYtNPApNQc4c=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20240617180043-68d350f18fd4 h1:Di6ANFilr+S60a4S61ZM00vLdw0IrQOSMS2/6mrnOU0=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20240617180043-68d350f18fd4/go.mod h1:Ue6ibwXGpU+dqIcODieyLOcgj7z8+IcskoNIgZxtrFY=
+google.golang.org/grpc v1.64.0 h1:KH3VH9y/MgNQg1dE7b3XfVK0GsPSIzJwdF617gUSbvY=
+google.golang.org/grpc v1.64.0/go.mod h1:oxjF8E3FBnjp+/gVFYdWacaLDx9na1aqy9oovLpxQYg=
+google.golang.org/protobuf v1.34.2 h1:6xV6lTsCfpGD21XK49h7MhtcApnLqkfYgPcdHftf6hg=
+google.golang.org/protobuf v1.34.2/go.mod h1:qYOHts0dSfpeUzUFpOMr/WGzszTmLH+DiWniOlNbLDw=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=

graphql.go

@@ -3,8 +3,6 @@ package main
 import (
 	"strconv"
 	"strings"
-	"sync"
-	"unsafe"
 
 	"github.com/goccy/go-json"
 	fiber "github.com/gofiber/fiber/v2"
@@ -14,29 +12,48 @@ import (
 	libpack_monitoring "github.com/lukaszraczylo/graphql-monitoring-proxy/monitoring"
 )
 
-var (
+var introspection_queries = []string{
-	introspectionQueries = map[string]struct{}{
+	"__schema",
-		"__schema": {}, "__type": {}, "__typename": {}, "__directive": {},
+	"__type",
-		"__directivelocation": {}, "__field": {}, "__inputvalue": {},
+	"__typename",
-		"__enumvalue": {}, "__typekind": {}, "__fieldtype": {},
+	"__directive",
-		"__inputobjecttype": {}, "__enumtype": {}, "__uniontype": {},
+	"__directivelocation",
-		"__scalars": {}, "__objects": {}, "__interfaces": {},
+	"__field",
-		"__unions": {}, "__enums": {}, "__inputobjects": {}, "__directives": {},
+	"__inputvalue",
+	"__enumvalue",
+	"__typekind",
+	"__fieldtype",
+	"__inputobjecttype",
+	"__enumtype",
+	"__uniontype",
+	"__scalars",
+	"__objects",
+	"__interfaces",
+	"__unions",
+	"__enums",
+	"__inputobjects",
+	"__directives",
+}
+
+// Saving the introspection queries as a map O(1) operation instead of O(n) for a slice.
+
+var introspectionQuerySet = map[string]struct{}{}
+var introspectionAllowedQueries = map[string]struct{}{}
+var allowedUrls = map[string]struct{}{}
+
+// Utility function to convert a slice of strings to a map for O(1) lookups.
+func sliceToMap(slice []string) map[string]struct{} {
+	resultMap := make(map[string]struct{}, len(slice))
+	for _, item := range slice {
+		resultMap[strings.ToLower(item)] = struct{}{}
 	}
-	introspectionAllowedQueries = make(map[string]struct{})
+	return resultMap
-	allowedUrls                 = make(map[string]struct{})
+}
-	mu                          sync.RWMutex
-)
 
 func prepareQueriesAndExemptions() {
-	mu.Lock()
+	introspectionQuerySet = sliceToMap(introspection_queries)
-	defer mu.Unlock()
+	introspectionAllowedQueries = sliceToMap(cfg.Security.IntrospectionAllowed)
-	for _, q := range cfg.Security.IntrospectionAllowed {
+	allowedUrls = sliceToMap(cfg.Server.AllowURLs)
-		introspectionAllowedQueries[strings.ToLower(q)] = struct{}{}
-	}
-	for _, u := range cfg.Server.AllowURLs {
-		allowedUrls[u] = struct{}{}
-	}
 }
 
 type parseGraphQLQueryResult struct {
@@ -50,43 +67,21 @@ type parseGraphQLQueryResult struct {
 	shouldIgnore   bool
 }
 
-var (
+func parseGraphQLQuery(c *fiber.Ctx) (res *parseGraphQLQueryResult) {
-	queryPool = sync.Pool{
+	res = &parseGraphQLQueryResult{shouldIgnore: true}
-		New: func() interface{} {
+	m := make(map[string]interface{})
-			return make(map[string]interface{}, 48)
+	err := json.Unmarshal(c.Body(), &m)
-		},
+	if err != nil {
-	}
-	resultPool = sync.Pool{
-		New: func() interface{} {
-			return &parseGraphQLQueryResult{}
-		},
-	}
-)
-
-func parseGraphQLQuery(c *fiber.Ctx) *parseGraphQLQueryResult {
-	res := resultPool.Get().(*parseGraphQLQueryResult)
-	*res = parseGraphQLQueryResult{shouldIgnore: true, activeEndpoint: cfg.Server.HostGraphQL}
-
-	m := queryPool.Get().(map[string]interface{})
-	defer func() {
-		for k := range m {
-			delete(m, k)
-		}
-		queryPool.Put(m)
-	}()
-
-	if err := json.Unmarshal(c.Body(), &m); err != nil {
 		cfg.Logger.Error(&libpack_logger.LogMessage{
 			Message: "Can't unmarshal the request",
-			Pairs:   map[string]interface{}{"error": err.Error(), "body": unsafeString(c.Body())},
+			Pairs:   map[string]interface{}{"error": err.Error(), "body": string(c.Body())},
 		})
 		if ifNotInTest() {
 			cfg.Monitoring.Increment(libpack_monitoring.MetricsSkipped, nil)
 		}
-		resultPool.Put(res)
+		return
-		return res
 	}
-
+	// get the query
 	query, ok := m["query"].(string)
 	if !ok {
 		cfg.Logger.Error(&libpack_logger.LogMessage{
@@ -96,8 +91,7 @@ func parseGraphQLQuery(c *fiber.Ctx) *parseGraphQLQueryResult {
 		if ifNotInTest() {
 			cfg.Monitoring.Increment(libpack_monitoring.MetricsSkipped, nil)
 		}
-		resultPool.Put(res)
+		return
-		return res
 	}
 
 	p, err := parser.Parse(parser.ParseParams{Source: query})
@@ -109,66 +103,60 @@ func parseGraphQLQuery(c *fiber.Ctx) *parseGraphQLQueryResult {
 		if ifNotInTest() {
 			cfg.Monitoring.Increment(libpack_monitoring.MetricsFailed, nil)
 		}
-		resultPool.Put(res)
+		return
-		return res
 	}
 
 	res.shouldIgnore = false
 	res.operationName = "undefined"
+	res.activeEndpoint = cfg.Server.HostGraphQL
 
 	for _, d := range p.Definitions {
 		if oper, ok := d.(*ast.OperationDefinition); ok {
-			if res.operationType == "" {
+			res.operationType = strings.ToLower(oper.Operation)
-				res.operationType = strings.ToLower(oper.Operation)
+
-				if oper.Name != nil {
+			if oper.Name != nil {
-					res.operationName = oper.Name.Value
+				res.operationName = oper.Name.Value
-				}
 			}
 
-			if cfg.Server.HostGraphQLReadOnly != "" {
+			// If the query is a mutation then direct it to the RW endpoint,
-				if res.operationType == "" {
+			// otherwise direct it to the RO endpoint if it's set.
-					res.activeEndpoint = cfg.Server.HostGraphQLReadOnly
+			if cfg.Server.HostGraphQLReadOnly != "" && res.operationType != "mutation" {
-				} else if res.operationType != "mutation" {
+				res.activeEndpoint = cfg.Server.HostGraphQLReadOnly
-					res.activeEndpoint = cfg.Server.HostGraphQLReadOnly
-				}
 			}
 
-			cfg.Logger.Debug(&libpack_logger.LogMessage{
-				Message: "Endpoint selection",
-				Pairs: map[string]interface{}{
-					"operationType":    res.operationType,
-					"selectedEndpoint": res.activeEndpoint,
-				},
-			})
-
 			if res.operationType == "mutation" && cfg.Server.ReadOnlyMode {
 				cfg.Logger.Warning(&libpack_logger.LogMessage{
-					Message: "Mutation blocked - server in read-only mode",
+					Message: "Mutation blocked",
 					Pairs:   map[string]interface{}{"query": query},
 				})
 				if ifNotInTest() {
 					cfg.Monitoring.Increment(libpack_monitoring.MetricsSkipped, nil)
 				}
-				_ = c.Status(403).SendString("The server is in read-only mode")
+				c.Status(403).SendString("The server is in read-only mode")
 				res.shouldBlock = true
-				resultPool.Put(res)
+				return
-				return res
 			}
 
 			for _, dir := range oper.Directives {
 				if dir.Name.Value == "cached" {
 					res.cacheRequest = true
 					for _, arg := range dir.Arguments {
-						switch arg.Name.Value {
+						if arg.Name.Value == "ttl" {
-						case "ttl":
+							res.cacheTime, err = strconv.Atoi(arg.Value.GetValue().(string))
-							if v, ok := arg.Value.GetValue().(string); ok {
+							if err != nil {
-								res.cacheTime, _ = strconv.Atoi(v)
+								cfg.Logger.Error(&libpack_logger.LogMessage{
-							}
+									Message: "Can't parse the ttl, using global",
-						case "refresh":
+									Pairs:   map[string]interface{}{"bad_ttl": arg.Value.GetValue().(string)},
-							if v, ok := arg.Value.GetValue().(bool); ok {
+								})
-								res.cacheRefresh = v
+								if ifNotInTest() {
+									cfg.Monitoring.Increment(libpack_monitoring.MetricsFailed, nil)
+								}
+								return
 							}
 						}
+						if arg.Name.Value == "refresh" {
+							res.cacheRefresh = arg.Value.GetValue().(bool)
+						}
 					}
 				}
 			}
@@ -176,26 +164,26 @@ func parseGraphQLQuery(c *fiber.Ctx) *parseGraphQLQueryResult {
 			if cfg.Security.BlockIntrospection {
 				res.shouldBlock = checkSelections(c, oper.GetSelectionSet().Selections)
 				if res.shouldBlock {
-					resultPool.Put(res)
+					return
-					return res
 				}
 			}
 		}
 	}
-	return res
+	return
-}
-
-func unsafeString(b []byte) string {
-	return *(*string)(unsafe.Pointer(&b))
 }
 
 func checkSelections(c *fiber.Ctx, selections []ast.Selection) bool {
 	for _, s := range selections {
-		if field, ok := s.(*ast.Field); ok {
+		field, ok := s.(*ast.Field)
-			if checkIfContainsIntrospection(c, field.Name.Value) {
+		if !ok {
-				return true
+			continue // or handle the case where the type assertion fails
-			}
+		}
-			if field.SelectionSet != nil && checkSelections(c, field.GetSelectionSet().Selections) {
+		shouldBlock := checkIfContainsIntrospection(c, field.Name.Value)
+		if shouldBlock {
+			return true
+		}
+		if field.SelectionSet != nil {
+			if checkSelections(c, field.GetSelectionSet().Selections) {
 				return true
 			}
 		}
@@ -203,26 +191,32 @@ func checkSelections(c *fiber.Ctx, selections []ast.Selection) bool {
 	return false
 }
 
-func checkIfContainsIntrospection(c *fiber.Ctx, whatever string) bool {
+func checkIfContainsIntrospection(c *fiber.Ctx, whatever string) (shouldBlock bool) {
 	whateverLower := strings.ToLower(whatever)
-	mu.RLock()
+	got_exemption := false
-	defer mu.RUnlock()
 
-	if _, exists := introspectionQueries[whateverLower]; exists {
+	// If the query is an introspection query, we need to check if it's allowed.
+	if _, exists := introspectionQuerySet[whateverLower]; exists {
 		if len(cfg.Security.IntrospectionAllowed) > 0 {
-			if _, allowed := introspectionAllowedQueries[whateverLower]; allowed {
+
+			if _, allowed_exists := introspectionAllowedQueries[whateverLower]; allowed_exists {
 				cfg.Logger.Debug(&libpack_logger.LogMessage{
 					Message: "Introspection query allowed, passing through",
 					Pairs:   map[string]interface{}{"query": whatever},
 				})
-				return false
+				got_exemption = true
+				shouldBlock = false
 			}
 		}
+		if !got_exemption {
+			shouldBlock = true
+		}
+	}
+	if shouldBlock {
 		if ifNotInTest() {
 			cfg.Monitoring.Increment(libpack_monitoring.MetricsSkipped, nil)
 		}
-		_ = c.Status(403).SendString("Introspection queries are not allowed")
+		c.Status(403).SendString("Introspection queries are not allowed")
-		return true
 	}
-	return false
+	return
 }

graphql_test.go

@@ -1,10 +1,6 @@
 package main
 
 import (
-	"fmt"
-	"strings"
-
-	fiber "github.com/gofiber/fiber/v2"
 	"github.com/valyala/fasthttp"
 )
 
@@ -322,111 +318,3 @@ func (suite *Tests) Test_parseGraphQLQuery() {
 		})
 	}
 }
-
-func (suite *Tests) Test_parseGraphQLQuery_complex() {
-	// ... existing tests ...
-
-	// Add these new test cases
-	suite.Run("test complex query with multiple operations", func() {
-		query := `
-			query GetUser($id: ID!) {
-					user(id: $id) {
-							name
-							email
-					}
-			}
-			mutation UpdateUser($id: ID!, $name: String!) {
-					updateUser(id: $id, name: $name) {
-							id
-							name
-					}
-			}
-			`
-		body := fmt.Sprintf(`{"query": %q}`, query)
-		ctx := createTestContext(body)
-		result := parseGraphQLQuery(ctx)
-		assert.Equal("query", result.operationType)
-		assert.Equal("GetUser", result.operationName)
-		assert.False(result.shouldBlock)
-	})
-
-	suite.Run("test query with custom directives", func() {
-		query := `
-			query GetUser($id: ID!) @custom(directive: "value") {
-					user(id: $id) {
-							name
-							email
-					}
-			}
-			`
-		body := fmt.Sprintf(`{"query": %q}`, query)
-		ctx := createTestContext(body)
-		result := parseGraphQLQuery(ctx)
-		assert.Equal("query", result.operationType)
-		assert.Equal("GetUser", result.operationName)
-		assert.False(result.shouldBlock)
-		assert.False(result.shouldBlock)
-	})
-}
-
-func (suite *Tests) Test_checkAllowedURLs() {
-	tests := []struct {
-		name     string
-		path     string
-		allowed  []string
-		expected bool
-	}{
-		{"allowed path", "/v1/graphql", []string{"/v1/graphql"}, true},
-		{"disallowed path", "/v2/graphql", []string{"/v1/graphql"}, false},
-		{"empty allowed list", "/v1/graphql", []string{}, true},
-		{"multiple allowed paths", "/v2/graphql", []string{"/v1/graphql", "/v2/graphql"}, true},
-	}
-
-	for _, tt := range tests {
-		suite.Run(tt.name, func() {
-			allowedUrls = make(map[string]struct{})
-			for _, url := range tt.allowed {
-				allowedUrls[url] = struct{}{}
-			}
-			app := fiber.New()
-			ctx := app.AcquireCtx(&fasthttp.RequestCtx{})
-			ctx.Request().SetRequestURI(tt.path)
-			ctx.Request().URI().SetPath(tt.path)
-			result := checkAllowedURLs(ctx)
-			assert.Equal(tt.expected, result)
-		})
-	}
-}
-
-func (suite *Tests) Test_checkIfContainsIntrospection() {
-	tests := []struct {
-		name     string
-		query    string
-		allowed  []string
-		expected bool
-	}{
-		{"allowed introspection", "__schema", []string{"__schema"}, false},
-		{"disallowed introspection", "__type", []string{"__schema"}, true},
-		{"non-introspection query", "normalQuery", []string{}, false},
-	}
-
-	for _, tt := range tests {
-		suite.Run(tt.name, func() {
-			cfg.Security.IntrospectionAllowed = tt.allowed
-			introspectionAllowedQueries = make(map[string]struct{})
-			for _, q := range tt.allowed {
-				introspectionAllowedQueries[strings.ToLower(q)] = struct{}{}
-			}
-			ctx := createTestContext("")
-			result := checkIfContainsIntrospection(ctx, tt.query)
-			assert.Equal(tt.expected, result)
-		})
-	}
-}
-
-func createTestContext(body string) *fiber.Ctx {
-	app := fiber.New()
-	ctx := app.AcquireCtx(&fasthttp.RequestCtx{})
-	ctx.Request().SetBody([]byte(body))
-	return ctx
-}

main.go

@@ -12,12 +12,11 @@ import (
 	libpack_cache "github.com/lukaszraczylo/graphql-monitoring-proxy/cache"
 	libpack_config "github.com/lukaszraczylo/graphql-monitoring-proxy/config"
 	libpack_logging "github.com/lukaszraczylo/graphql-monitoring-proxy/logging"
+	libpack_trace "github.com/lukaszraczylo/graphql-monitoring-proxy/tracing"
 )
 
-var (
+var cfg *config
-	cfg  *config
+var once sync.Once
-	once sync.Once
-)
 
 // function get value from the env where the value can be anything
 func getDetailsFromEnv[T any](key string, defaultValue T) T {
@@ -90,6 +89,8 @@ func parseConfig() {
 	c.HasuraEventCleaner.Enable = getDetailsFromEnv("HASURA_EVENT_CLEANER", false)
 	c.HasuraEventCleaner.ClearOlderThan = getDetailsFromEnv("HASURA_EVENT_CLEANER_OLDER_THAN", 1)
 	c.HasuraEventCleaner.EventMetadataDb = getDetailsFromEnv("HASURA_EVENT_METADATA_DB", "")
+	c.Trace.Enable = getDetailsFromEnv("ENABLE_TRACE", false)
+	c.Trace.TraceEndpoint = getDetailsFromEnv("TRACER_ENDPOINT", "localhost:4317")
 	cfg = &c
 
 	if cfg.Cache.CacheEnable || cfg.Cache.CacheRedisEnable {
@@ -105,8 +106,21 @@ func parseConfig() {
 		}
 		libpack_cache.EnableCache(cacheConfig)
 	}
+
 	loadRatelimitConfig()
 	once.Do(func() {
+		if cfg.Trace.Enable {
+			var err error
+			cfg.Trace.Client, err = libpack_trace.NewClient(cfg.Logger, cfg.Trace.TraceEndpoint)
+			if err != nil {
+				cfg.Logger.Error(&libpack_logging.LogMessage{
+					Message: "Failed to start tracer",
+					Pairs: map[string]interface{}{
+						"error": err,
+					},
+				})
+			}
+		}
 		go enableApi()
 		go enableHasuraEventCleaner()
 	})

main_test.go

@@ -112,29 +112,3 @@ func (suite *Tests) Test_envVariableSetting() {
 		})
 	}
 }
-
-func (suite *Tests) Test_getDetailsFromEnv() {
-	tests := []struct {
-		name         string
-		key          string
-		defaultValue interface{}
-		envValue     string
-		expected     interface{}
-	}{
-		{"string value", "TEST_STRING", "default", "envValue", "envValue"},
-		{"int value", "TEST_INT", 0, "123", 123},
-		{"bool value", "TEST_BOOL", false, "true", true},
-		{"default value", "NON_EXISTENT", "default", "", "default"},
-	}
-
-	for _, tt := range tests {
-		suite.Run(tt.name, func() {
-			if tt.envValue != "" {
-				os.Setenv("GMP_"+tt.key, tt.envValue)
-				defer os.Unsetenv("GMP_" + tt.key)
-			}
-			result := getDetailsFromEnv(tt.key, tt.defaultValue)
-			assert.Equal(tt.expected, result)
-		})
-	}
-}

monitoring/helpers.go

@@ -12,14 +12,17 @@ import (
 	libpack_config "github.com/lukaszraczylo/graphql-monitoring-proxy/config"
 )
 
+// Cache for sorted label keys to avoid repeated sorting
 var sortedLabelKeysCache = struct {
-	m sync.Map
+	m map[string][]string
-}{}
+	sync.RWMutex
+}{m: make(map[string][]string)}
 
 func (ms *MetricsSetup) get_metrics_name(name string, labels map[string]string) string {
 	const unknownPodName = "unknown"
 	var buf bytes.Buffer
 
+	// Prepare default labels without initializing a new map
 	podName := getPodName()
 	if labels == nil {
 		labels = defaultLabels(podName)
@@ -27,16 +30,18 @@ func (ms *MetricsSetup) get_metrics_name(name string, labels map[string]string)
 		ensureDefaultLabels(&labels, podName)
 	}
 
+	// Prefix handling
 	if ms.metrics_prefix != "" {
 		buf.WriteString(ms.metrics_prefix)
-		buf.WriteByte('_')
+		buf.WriteString("_")
 	}
 	buf.WriteString(name)
 
+	// Append labels if any
 	if len(labels) > 0 {
-		buf.WriteByte('{')
+		buf.WriteString("{")
 		appendSortedLabels(&buf, labels)
-		buf.WriteByte('}')
+		buf.WriteString("}")
 	}
 
 	return buf.String()
@@ -73,64 +78,64 @@ func appendSortedLabels(buf *bytes.Buffer, labels map[string]string) {
 	keys := getSortedKeys(labels)
 	for i, k := range keys {
 		if i > 0 {
-			buf.WriteByte(',')
+			buf.WriteString(",")
 		}
 		buf.WriteString(k)
-		buf.WriteString(`="`)
+		buf.WriteString("=\"")
 		buf.WriteString(labels[k])
-		buf.WriteByte('"')
+		buf.WriteString("\"")
 	}
 }
 
 func getSortedKeys(labels map[string]string) []string {
 	labelsKey := labelsToString(labels)
 
-	// Check if the sorted keys are already cached
+	sortedLabelKeysCache.RLock()
-	if keys, ok := sortedLabelKeysCache.m.Load(labelsKey); ok {
+	keys, exists := sortedLabelKeysCache.m[labelsKey]
-		return keys.([]string)
+	sortedLabelKeysCache.RUnlock()
-	}
 
-	// Compute the sorted keys
+	if !exists {
-	keys := make([]string, 0, len(labels))
+		keys = make([]string, 0, len(labels))
-	for k := range labels {
+		for k := range labels {
-		keys = append(keys, k)
+			keys = append(keys, k)
-	}
+		}
-	sort.Strings(keys)
+		sort.Strings(keys)
 
-	// Store the sorted keys in the cache
+		sortedLabelKeysCache.Lock()
-	sortedLabelKeysCache.m.Store(labelsKey, keys)
+		sortedLabelKeysCache.m[labelsKey] = keys
+		sortedLabelKeysCache.Unlock()
+	}
 
 	return keys
 }
 
 func labelsToString(labels map[string]string) string {
-	keys := make([]string, 0, len(labels))
-	for k := range labels {
-		keys = append(keys, k)
-	}
-	sort.Strings(keys)
-
 	var sb strings.Builder
-	for _, k := range keys {
+	for k, v := range labels {
 		sb.WriteString(k)
-		sb.WriteByte('=')
+		sb.WriteString("=")
-		sb.WriteString(labels[k])
+		sb.WriteString(v)
-		sb.WriteByte(';')
+		sb.WriteString(";")
 	}
 	return sb.String()
 }
 
+// validate_metrics_name validates the name of the metric to adhere to the Prometheus naming conventions
+// https://prometheus.io/docs/practices/naming/
 func validate_metrics_name(name string) error {
 	cleanedName := clean_metric_name(name)
 
+	// Trim leading and trailing underscores
 	finalName := strings.Trim(cleanedName, "_")
 
+	// Check if the processed name matches the original input
 	if finalName != name {
-		return fmt.Errorf("invalid metric name: %s, expected %s", name, finalName)
+		return fmt.Errorf("Invalid metric name: %s, expected %s", name, finalName)
 	}
 	return nil
 }
 
+// clean_metric_name processes the metric name according to Prometheus naming conventions
 func clean_metric_name(name string) string {
 	var buf bytes.Buffer
 	lastWasUnderscore := false
@@ -139,27 +144,31 @@ func clean_metric_name(name string) string {
 		if is_allowed_rune(r) {
 			if is_special_rune(r) {
 				if lastWasUnderscore {
-					continue
+					continue // Skip if the previous character was also an underscore
 				}
-				r = '_'
+				r = '_' // Convert spaces and special characters to underscores
 				lastWasUnderscore = true
 			} else {
 				lastWasUnderscore = false
 			}
 			buf.WriteRune(r)
 		} else if !lastWasUnderscore {
-			buf.WriteByte('_')
+			buf.WriteRune('_')
 			lastWasUnderscore = true
 		}
 	}
 
-	return strings.Trim(buf.String(), "_")
+	// Remove trailing underscore
+	result := buf.String()
+	return strings.Trim(result, "_")
 }
 
+// is_allowed_rune checks if the rune is allowed in the metric name
 func is_allowed_rune(r rune) bool {
 	return unicode.IsLetter(r) || unicode.IsDigit(r) || r == ' ' || r == '_'
 }
 
+// is_special_rune checks if the rune is a space or an underscore
 func is_special_rune(r rune) bool {
 	return r == ' ' || r == '_'
 }
@@ -169,12 +178,14 @@ func compile_metrics_with_labels(name string, labels map[string]string) string {
 
 	buf.WriteString(name)
 
+	// Collect keys and sort them
 	keys := getSortedKeys(labels)
 
+	// Append sorted key-value pairs to the buffer
 	for _, k := range keys {
-		buf.WriteByte('_')
+		buf.WriteString("_")
 		buf.WriteString(k)
-		buf.WriteByte('_')
+		buf.WriteString("_")
 		buf.WriteString(labels[k])
 	}
 

monitoring/monitoring.go

@@ -1,3 +1,6 @@
+// Package `libpack_monitoring` provides and easy way to add prometheus metrics to your application.
+// It also provides a way to add custom metrics to the already started prometheus registry.
+
 package libpack_monitoring
 
 import (
@@ -19,7 +22,9 @@ type MetricsSetup struct {
 	metrics_prefix     string
 }
 
-var log = libpack_logger.New().SetMinLogLevel(libpack_logger.LEVEL_INFO)
+var (
+	log *libpack_logger.Logger
+)
 
 type InitConfig struct {
 	PurgeOnCrawl bool
@@ -27,11 +32,11 @@ type InitConfig struct {
 }
 
 func NewMonitoring(ic *InitConfig) *MetricsSetup {
-	ms := &MetricsSetup{
+	log = libpack_logger.New().SetMinLogLevel(libpack_logger.LEVEL_INFO)
-		ic:                 ic,
+	ms := &MetricsSetup{ic: ic}
-		metrics_set:        metrics.NewSet(),
+	ms.metrics_set = metrics.NewSet()
-		metrics_set_custom: metrics.NewSet(),
+	ms.metrics_set_custom = metrics.NewSet()
-	}
+	// if not testing, start the prometheus endpoint
 
 	if flag.Lookup("test.v") == nil {
 		go ms.startPrometheusEndpoint()
@@ -55,11 +60,9 @@ func (ms *MetricsSetup) startPrometheusEndpoint() {
 		AppName:               fmt.Sprintf("GraphQL Monitoring Proxy - %s v%s", libpack_config.PKG_NAME, libpack_config.PKG_VERSION),
 	})
 	app.Get("/metrics", ms.metricsEndpoint)
-	if err := app.Listen(fmt.Sprintf(":%d", envutil.GetInt("MONITORING_PORT", 9393))); err != nil {
+	err := app.Listen(fmt.Sprintf(":%d", envutil.GetInt("MONITORING_PORT", 9393)))
-		log.Critical(&libpack_logger.LogMessage{
+	if err != nil {
-			Message: "Can't start the service",
+		fmt.Println("Can't start the service: ", err)
-			Pairs:   map[string]interface{}{"error": err},
-		})
 	}
 }
 
@@ -82,7 +85,7 @@ func (ms *MetricsSetup) ListActiveMetrics() []string {
 }
 
 func (ms *MetricsSetup) RegisterMetricsGauge(metric_name string, labels map[string]string, val float64) *metrics.Gauge {
-	if err := validate_metrics_name(metric_name); err != nil {
+	if validate_metrics_name(metric_name) != nil {
 		log.Critical(&libpack_logger.LogMessage{
 			Message: "RegisterMetricsGauge() error",
 			Pairs:   map[string]interface{}{"_error": "Invalid metric name", "_metric_name": metric_name},
@@ -90,12 +93,13 @@ func (ms *MetricsSetup) RegisterMetricsGauge(metric_name string, labels map[stri
 		return nil
 	}
 	return ms.metrics_set_custom.GetOrCreateGauge(ms.get_metrics_name(metric_name, labels), func() float64 {
+		// get current value of the gauge and add val to it
 		return val
 	})
 }
 
 func (ms *MetricsSetup) RegisterMetricsCounter(metric_name string, labels map[string]string) *metrics.Counter {
-	if err := validate_metrics_name(metric_name); err != nil {
+	if validate_metrics_name(metric_name) != nil {
 		log.Critical(&libpack_logger.LogMessage{
 			Message: "RegisterMetricsCounter() error",
 			Pairs:   map[string]interface{}{"_error": "Invalid metric name", "_metric_name": metric_name},
@@ -109,7 +113,7 @@ func (ms *MetricsSetup) RegisterMetricsCounter(metric_name string, labels map[st
 }
 
 func (ms *MetricsSetup) RegisterFloatCounter(metric_name string, labels map[string]string) *metrics.FloatCounter {
-	if err := validate_metrics_name(metric_name); err != nil {
+	if validate_metrics_name(metric_name) != nil {
 		log.Critical(&libpack_logger.LogMessage{
 			Message: "RegisterFloatCounter() error",
 			Pairs:   map[string]interface{}{"_error": "Invalid metric name", "_metric_name": metric_name},
@@ -120,7 +124,7 @@ func (ms *MetricsSetup) RegisterFloatCounter(metric_name string, labels map[stri
 }
 
 func (ms *MetricsSetup) RegisterMetricsSummary(metric_name string, labels map[string]string) *metrics.Summary {
-	if err := validate_metrics_name(metric_name); err != nil {
+	if validate_metrics_name(metric_name) != nil {
 		log.Critical(&libpack_logger.LogMessage{
 			Message: "RegisterMetricsSummary() error",
 			Pairs:   map[string]interface{}{"_error": "Invalid metric name", "_metric_name": metric_name},
@@ -131,7 +135,7 @@ func (ms *MetricsSetup) RegisterMetricsSummary(metric_name string, labels map[st
 }
 
 func (ms *MetricsSetup) RegisterMetricsHistogram(metric_name string, labels map[string]string) *metrics.Histogram {
-	if err := validate_metrics_name(metric_name); err != nil {
+	if validate_metrics_name(metric_name) != nil {
 		log.Critical(&libpack_logger.LogMessage{
 			Message: "RegisterMetricsHistogram() error",
 			Pairs:   map[string]interface{}{"_error": "Invalid metric name", "_metric_name": metric_name},

proxy.go

@@ -1,30 +1,21 @@
 package main
 
 import (
-	"bytes"
+	"context"
-	"compress/gzip"
 	"crypto/tls"
 	"fmt"
-	"io"
-	"net/url"
 	"time"
 
 	"github.com/avast/retry-go/v4"
-	"github.com/gofiber/fiber/v2"
+	"github.com/goccy/go-json"
+	fiber "github.com/gofiber/fiber/v2"
 	"github.com/gofiber/fiber/v2/middleware/proxy"
 	libpack_logger "github.com/lukaszraczylo/graphql-monitoring-proxy/logging"
 	libpack_monitoring "github.com/lukaszraczylo/graphql-monitoring-proxy/monitoring"
+	libpack_trace "github.com/lukaszraczylo/graphql-monitoring-proxy/tracing"
 	"github.com/valyala/fasthttp"
 )
 
-var (
-	httpClient *fasthttp.Client
-)
-
-func init() {
-	httpClient = createFasthttpClient(30) // Assuming a default timeout of 30 seconds
-}
-
 func createFasthttpClient(timeout int) *fasthttp.Client {
 	return &fasthttp.Client{
 		Name:                     "graphql_proxy",
@@ -33,14 +24,15 @@ func createFasthttpClient(timeout int) *fasthttp.Client {
 			InsecureSkipVerify: true,
 		},
 		MaxConnsPerHost:               2048,
-		ReadTimeout:                   time.Duration(timeout) * time.Second,
+		ReadTimeout:                   time.Second * time.Duration(timeout),
-		WriteTimeout:                  time.Duration(timeout) * time.Second,
+		WriteTimeout:                  time.Second * time.Duration(timeout),
-		MaxIdleConnDuration:           time.Duration(timeout) * time.Second,
+		MaxIdleConnDuration:           time.Second * time.Duration(timeout),
-		MaxConnDuration:               time.Duration(timeout) * time.Second,
+		MaxConnDuration:               time.Second * time.Duration(timeout),
 		DisableHeaderNamesNormalizing: true,
 	}
 }
-func proxyTheRequest(c *fiber.Ctx, currentEndpoint string) error {
+
+func proxyTheRequest(c *fiber.Ctx, currentEndpoint string, ctx context.Context) error {
 	if !checkAllowedURLs(c) {
 		cfg.Logger.Error(&libpack_logger.LogMessage{
 			Message: "Request blocked",
@@ -49,22 +41,44 @@ func proxyTheRequest(c *fiber.Ctx, currentEndpoint string) error {
 		if ifNotInTest() {
 			cfg.Monitoring.Increment(libpack_monitoring.MetricsSkipped, nil)
 		}
-		return fmt.Errorf("request blocked - not allowed URL: %s", c.Path())
+		c.Status(403).SendString("Request blocked - not allowed URL")
-	}
+		return nil
-
-	proxyURL := currentEndpoint + c.Path()
-	_, err := url.Parse(proxyURL)
-	if err != nil {
-		return fmt.Errorf("invalid URL: %v", err)
 	}
+	c.Request().Header.DisableNormalizing()
+	c.Request().Header.Add("X-Real-IP", c.IP())
+	c.Request().Header.Add(fiber.HeaderXForwardedFor, string(c.Request().Header.Peek("X-Forwarded-For")))
+	c.Request().Header.Del(fiber.HeaderAcceptEncoding)
 
+	// added dummy check for the log level because it executes additional functions which could
+	// potentially slow down the execution.
 	if cfg.LogLevel == "debug" {
-		logDebugRequest(c)
+		cfg.Logger.Debug(&libpack_logger.LogMessage{
+			Message: "Proxying the request",
+			Pairs: map[string]interface{}{
+				"path":         c.Path(),
+				"body":         string(c.Request().Body()),
+				"headers":      c.GetReqHeaders(),
+				"request_uuid": c.Locals("request_uuid"),
+			},
+		})
 	}
 
-	err = retry.Do(
+	err := retry.Do(
 		func() error {
-			return proxy.DoRedirects(c, proxyURL, 3, httpClient)
+			errInt := proxy.DoRedirects(c, currentEndpoint+c.Path(), 3, cfg.Client.FastProxyClient)
+			if errInt != nil {
+				cfg.Logger.Error(&libpack_logger.LogMessage{
+					Message: "Can't proxy the request",
+					Pairs: map[string]interface{}{
+						"error": errInt.Error(),
+					},
+				})
+				if ifNotInTest() {
+					cfg.Monitoring.Increment(libpack_monitoring.MetricsFailed, nil)
+				}
+				return errInt
+			}
+			return nil
 		},
 		retry.OnRetry(func(n uint, err error) {
 			cfg.Logger.Warning(&libpack_logger.LogMessage{
@@ -75,83 +89,68 @@ func proxyTheRequest(c *fiber.Ctx, currentEndpoint string) error {
 				},
 			})
 		}),
-		retry.Attempts(3),
+		retry.Attempts(uint(3)),
 		retry.DelayType(retry.BackOffDelay),
-		retry.Delay(250*time.Millisecond),
+		retry.Delay(time.Duration(250*time.Millisecond)),
 		retry.LastErrorOnly(true),
 	)
 
 	if err != nil {
 		cfg.Logger.Warning(&libpack_logger.LogMessage{
 			Message: "Can't proxy the request",
-			Pairs:   map[string]interface{}{"error": err.Error()},
+			Pairs: map[string]interface{}{
+				"error": err.Error(),
+			},
 		})
-		if ifNotInTest() {
+		return err
-			cfg.Monitoring.Increment(libpack_monitoring.MetricsFailed, nil)
-		}
-		return fmt.Errorf("failed to proxy request: %v", err)
 	}
 
 	if cfg.LogLevel == "debug" {
-		logDebugResponse(c)
+		cfg.Logger.Debug(&libpack_logger.LogMessage{
-	}
+			Message: "Received proxied response",
-
+			Pairs: map[string]interface{}{
-	if c.Response().Header.Peek("Content-Encoding") != nil && string(c.Response().Header.Peek("Content-Encoding")) == "gzip" {
+				"path":          c.Path(),
-		reader, err := gzip.NewReader(bytes.NewReader(c.Response().Body()))
+				"response_body": string(c.Response().Body()),
-		if err != nil {
+				"response_code": c.Response().StatusCode(),
-			cfg.Logger.Error(&libpack_logger.LogMessage{
+				"headers":       c.GetRespHeaders(),
-				Message: "Failed to create gzip reader",
+				"request_uuid":  c.Locals("request_uuid"),
-				Pairs:   map[string]interface{}{"error": err.Error()},
+			},
-			})
+		})
-			return err
-		}
-		defer reader.Close()
-
-		decompressed, err := io.ReadAll(reader)
-		if err != nil {
-			cfg.Logger.Error(&libpack_logger.LogMessage{
-				Message: "Failed to decompress response",
-				Pairs:   map[string]interface{}{"error": err.Error()},
-			})
-			return err
-		}
-
-		c.Response().SetBody(decompressed)
-		c.Response().Header.Del("Content-Encoding")
 	}
 
 	if c.Response().StatusCode() != 200 {
 		if ifNotInTest() {
 			cfg.Monitoring.Increment(libpack_monitoring.MetricsFailed, nil)
 		}
-		return fmt.Errorf("received non-200 response from the GraphQL server: %d", c.Response().StatusCode())
+		cfg.Logger.Error(&libpack_logger.LogMessage{
+			Message: "Received non-200 response from the GraphQL server",
+			Pairs: map[string]interface{}{
+				"status_code": c.Response().StatusCode(),
+			},
+		})
+		return fmt.Errorf("Received non-200 response from the GraphQL server: %d", c.Response().StatusCode())
 	}
 
 	c.Response().Header.Del(fiber.HeaderServer)
+	if cfg.Trace.Enable {
+		tracingContext := libpack_trace.TraceContextInject(ctx)
+		if tracingContext == nil {
+			cfg.Logger.Error(&libpack_logger.LogMessage{
+				Message: "Can't inject empty tracing context",
+			})
+			return nil
+		}
+		traceJsonEncoded, err := json.Marshal(tracingContext)
+		if err != nil {
+			cfg.Logger.Error(&libpack_logger.LogMessage{
+				Message: "Can't convert tracing context to JSON",
+				Pairs: map[string]interface{}{
+					"error": err.Error(),
+				},
+			})
+			return err
+		}
+		c.Response().Header.Set("X-Trace-Span", string(traceJsonEncoded))
+	}
 	return nil
 }
-
-func logDebugRequest(c *fiber.Ctx) {
-	cfg.Logger.Debug(&libpack_logger.LogMessage{
-		Message: "Proxying the request",
-		Pairs: map[string]interface{}{
-			"path":         c.Path(),
-			"body":         string(c.Body()),
-			"headers":      c.GetReqHeaders(),
-			"request_uuid": c.Locals("request_uuid"),
-		},
-	})
-}
-
-func logDebugResponse(c *fiber.Ctx) {
-	cfg.Logger.Debug(&libpack_logger.LogMessage{
-		Message: "Received proxied response",
-		Pairs: map[string]interface{}{
-			"path":          c.Path(),
-			"response_body": string(c.Response().Body()),
-			"response_code": c.Response().StatusCode(),
-			"headers":       c.GetRespHeaders(),
-			"request_uuid":  c.Locals("request_uuid"),
-		},
-	})
-}

proxy_test.go

@@ -12,63 +12,47 @@ func (suite *Tests) Test_proxyTheRequest() {
 	}
 
 	tests := []struct {
-		headers      map[string]string
+		headers map[string]string
-		name         string
+		name    string
-		body         string
+		body    string
-		host         string
+		host    string
-		hostRO       string
+		hostRO  string
-		path         string
+		path    string
-		wantErr      bool
+		wantErr bool
-		wantEndpoint string
 	}{
 		{
-			name:         "test_empty",
+			name:    "test_empty",
-			body:         `{"query":"query {\n            __type(name: \"Query\") {\n              name\n            }\n          }"}`,
+			body:    `{"query":"query {\n            __type(name: \"Query\") {\n              name\n            }\n          }"}`,
-			host:         "https://telegram-bot.app/",
+			host:    "https://telegram-bot.app/",
-			path:         "/v1/graphql",
+			path:    "/v1/graphql",
-			headers:      supplied_headers,
+			headers: supplied_headers,
-			wantErr:      false,
+			wantErr: false,
-			wantEndpoint: "https://telegram-bot.app/",
 		},
 		{
-			name:         "test_wrong_url",
+			name:    "test_wrong_url",
-			body:         `{"query":"query {\n            __type(name: \"Query\") {\n              name\n            }\n          }"}`,
+			body:    `{"query":"query {\n            __type(name: \"Query\") {\n              name\n            }\n          }"}`,
-			host:         "https://google.com/",
+			host:    "https://google.com/",
-			path:         "/v1/wrongURL",
+			path:    "/v1/wrongURL",
-			headers:      supplied_headers,
+			headers: supplied_headers,
-			wantErr:      true,
+			wantErr: true,
-			wantEndpoint: "https://google.com/",
 		},
 		{
-			name:         "Test read only mode",
+			name:    "Test read only mode",
-			body:         `{"query":"query {\n            __type(name: \"Query\") {\n              name\n            }\n          }"}`,
+			body:    `{"query":"query {\n            __type(name: \"Query\") {\n              name\n            }\n          }"}`,
-			host:         "https://google.com/",
+			host:    "https://google.com/",
-			hostRO:       "https://telegram-bot.app/",
+			hostRO:  "https://telegram-bot.app/",
-			path:         "/v1/graphql",
+			path:    "/v1/graphql",
-			headers:      supplied_headers,
+			headers: supplied_headers,
-			wantErr:      false,
+			wantErr: false,
-			wantEndpoint: "https://telegram-bot.app/",
 		},
 		{
-			name:   "Test read only mode wrong host",
+			name:    "Test read only mode wrong host",
-			body:   `{"query":"query {\n            __type(name: \"Query\") {\n              name\n            }\n          }"}`,
+			body:    `{"query":"query {\n            __type(name: \"Query\") {\n              name\n            }\n          }"}`,
-			host:   "https://telegram-bot.app/",
+			host:    "https://telegram-bot.app/",
-			hostRO: "https://google.com/",
+			hostRO:  "https://google.com/",
-
+			path:    "/v1/graphql",
-			path:         "/v1/graphql",
+			headers: supplied_headers,
-			headers:      supplied_headers,
+			wantErr: true,
-			wantErr:      true,
-			wantEndpoint: "https://google.com/",
-		},
-		{
-			name:         "Test mutation with endpoint flip",
-			body:         `{"query":"mutation {\n            __type(name: \"Query\") {\n              name\n            }\n          }"}`,
-			host:         "https://telegram-bot.app/",
-			hostRO:       "https://google.com/",
-			path:         "/v1/graphql",
-			headers:      supplied_headers,
-			wantErr:      false,
-			wantEndpoint: "https://telegram-bot.app/",
 		},
 	}
 
@@ -108,49 +92,6 @@ func (suite *Tests) Test_proxyTheRequest() {
 			} else {
 				assert.Nil(err, "Error is not nil", tt.name)
 			}
-			assert.Equal(tt.wantEndpoint, res.activeEndpoint, "Unexpected endpoint", tt.name)
-		})
-	}
-}
-
-func (suite *Tests) Test_proxyTheRequestWithPayloads() {
-
-	tests := []struct {
-		name    string
-		payload string
-		url     string
-		wantErr bool
-	}{
-		{
-			name:    "Test with invalid URL",
-			payload: `{"query":"query {\n            __type(name: \"Query\") {\n              name\n            }\n          }"}`,
-			url:     "://invalid-url",
-			wantErr: true,
-		},
-		{
-			name:    "Test with network error",
-			payload: `{"query":"query {\n            __type(name: \"Query\") {\n              name\n            }\n          }"}`,
-			url:     "http://non-existent-host.invalid",
-			wantErr: true,
-		},
-		// {
-		// 	name:    "Test with large payload",
-		// 	payload: strings.Repeat("a", 10*1024*1024), // 10MB payload
-		// 	url:     "https://google.com/",
-		// 	wantErr: false,
-		// },
-	}
-
-	for _, tt := range tests {
-		suite.Run(tt.name, func() {
-			cfg.Server.HostGraphQL = tt.url
-			ctx := suite.app.AcquireCtx(&fasthttp.RequestCtx{})
-			err := proxyTheRequest(ctx, cfg.Server.HostGraphQL)
-			if tt.wantErr {
-				assert.NotNil(err)
-			} else {
-				assert.Nil(err)
-			}
 		})
 	}
 }

ratelimit.go

@@ -2,80 +2,89 @@ package main
 
 import (
 	"os"
-	"sync"
 	"time"
 
 	"github.com/goccy/go-json"
+
 	goratecounter "github.com/lukaszraczylo/go-ratecounter"
 	libpack_logger "github.com/lukaszraczylo/graphql-monitoring-proxy/logging"
 )
 
 type RateLimitConfig struct {
 	RateCounterTicker *goratecounter.RateCounter
-	Interval          time.Duration `json:"interval"`
+	Interval          string `json:"interval"`
-	Req               int           `json:"req"`
+	Req               int    `json:"req"`
 }
 
-var (
+var rateLimits map[string]RateLimitConfig
-	rateLimits  = make(map[string]RateLimitConfig)
+var ratelimit_intervals = map[string]time.Duration{
-	rateLimitMu sync.RWMutex
+	"milli":  time.Millisecond,
-)
+	"micro":  time.Microsecond,
+	"nano":   time.Nanosecond,
+	"second": time.Second,
+	"minute": time.Minute,
+	"hour":   time.Hour,
+	"day":    time.Hour * 24,
+}
 
 func loadRatelimitConfig() error {
 	paths := []string{"/go/src/app/ratelimit.json", "./ratelimit.json", "./static/app/default-ratelimit.json"}
+
 	for _, path := range paths {
-		if err := loadConfigFromPath(path); err == nil {
+		err := loadConfigFromPath(path)
+		if err == nil {
 			return nil
 		}
-	}
-	cfg.Logger.Error(&libpack_logger.LogMessage{
-		Message: "Rate limit config not found",
-		Pairs:   map[string]interface{}{"paths": paths},
-	})
-	return os.ErrNotExist
-}
-
-func loadConfigFromPath(path string) error {
-	file, err := os.ReadFile(path)
-	if err != nil {
 		cfg.Logger.Debug(&libpack_logger.LogMessage{
 			Message: "Failed to load config",
 			Pairs:   map[string]interface{}{"path": path, "error": err},
 		})
-		return err
 	}
 
-	var config struct {
+	cfg.Logger.Error(&libpack_logger.LogMessage{
+		Message: "Rate limit config not found",
+		Pairs:   map[string]interface{}{"paths": paths},
+	})
+
+	return os.ErrNotExist
+}
+
+func loadConfigFromPath(path string) error {
+	file, err := os.Open(path)
+	if err != nil {
+		return err
+	}
+	defer file.Close()
+
+	config := struct {
 		RateLimit map[string]RateLimitConfig `json:"ratelimit"`
-	}
+	}{}
 
-	if err := json.Unmarshal(file, &config); err != nil {
+	decoder := json.NewDecoder(file)
+	if err := decoder.Decode(&config); err != nil {
 		return err
 	}
 
-	newRateLimits := make(map[string]RateLimitConfig, len(config.RateLimit))
 	for key, value := range config.RateLimit {
 		value.RateCounterTicker = goratecounter.NewRateCounter().WithConfig(goratecounter.RateCounterConfig{
-			Interval: value.Interval,
+			Interval: time.Duration(value.Req) * ratelimit_intervals[value.Interval],
 		})
 
 		if cfg.LogLevel == "debug" {
 			cfg.Logger.Debug(&libpack_logger.LogMessage{
 				Message: "Setting ratelimit config for role",
 				Pairs: map[string]interface{}{
-					"role":          key,
+					"role":              key,
-					"interval_used": value.Interval,
+					"interval_provided": value.Interval,
-					"ratelimit":     value.Req,
+					"interval_used":     ratelimit_intervals[value.Interval],
+					"ratelimit":         value.Req,
 				},
 			})
 		}
-		newRateLimits[key] = value
+		config.RateLimit[key] = value
 	}
 
-	rateLimitMu.Lock()
+	rateLimits = config.RateLimit
-	rateLimits = newRateLimits
-	rateLimitMu.Unlock()
-
 	cfg.Logger.Debug(&libpack_logger.LogMessage{
 		Message: "Rate limit config loaded",
 		Pairs:   map[string]interface{}{"ratelimit": rateLimits},
@@ -83,14 +92,28 @@ func loadConfigFromPath(path string) error {
 	return nil
 }
 
-func rateLimitedRequest(userID, userRole string) bool {
+func rateLimitedRequest(userID string, userRole string) (shouldAllow bool) {
-	rateLimitMu.RLock()
+	if rateLimits == nil {
-	roleConfig, ok := rateLimits[userRole]
-	rateLimitMu.RUnlock()
-
-	if !ok || roleConfig.RateCounterTicker == nil {
 		cfg.Logger.Debug(&libpack_logger.LogMessage{
-			Message: "Rate limit role not found or ticker not initialized",
+			Message: "Rate limit config not found",
+			Pairs:   map[string]interface{}{"user_role": userRole},
+		})
+		return true
+	}
+
+	// Fetch role config once to avoid multiple map lookups
+	roleConfig, ok := rateLimits[userRole]
+	if !ok {
+		cfg.Logger.Debug(&libpack_logger.LogMessage{
+			Message: "Rate limit role not found",
+			Pairs:   map[string]interface{}{"user_role": userRole},
+		})
+		return true
+	}
+
+	if roleConfig.RateCounterTicker == nil {
+		cfg.Logger.Debug(&libpack_logger.LogMessage{
+			Message: "Rate limit ticker not found",
 			Pairs:   map[string]interface{}{"user_role": userRole},
 		})
 		return true

server.go

@@ -1,9 +1,9 @@
 package main
 
 import (
+	"context"
 	"fmt"
 	"strconv"
-	"sync"
 	"time"
 
 	"github.com/goccy/go-json"
@@ -15,26 +15,16 @@ import (
 	libpack_config "github.com/lukaszraczylo/graphql-monitoring-proxy/config"
 	libpack_logger "github.com/lukaszraczylo/graphql-monitoring-proxy/logging"
 	libpack_monitoring "github.com/lukaszraczylo/graphql-monitoring-proxy/monitoring"
+	libpack_trace "github.com/lukaszraczylo/graphql-monitoring-proxy/tracing"
 )
 
-const (
+// StartHTTPProxy starts the HTTP and points it to the GraphQL server.
-	healthCheckQueryStr = `{ __typename }`
-)
-
-var (
-	ctxPool = sync.Pool{
-		New: func() interface{} {
-			return new(fiber.Ctx)
-		},
-	}
-)
-
 func StartHTTPProxy() {
 	cfg.Logger.Debug(&libpack_logger.LogMessage{
 		Message: "Starting the HTTP proxy",
+		Pairs:   nil,
 	})
-
+	server := fiber.New(fiber.Config{
-	serverConfig := fiber.Config{
 		DisableStartupMessage: true,
 		AppName:               fmt.Sprintf("GraphQL Monitoring Proxy - %s v%s", libpack_config.PKG_NAME, libpack_config.PKG_VERSION),
 		IdleTimeout:           time.Duration(cfg.Client.ClientTimeout) * time.Second * 2,
@@ -42,14 +32,13 @@ func StartHTTPProxy() {
 		WriteTimeout:          time.Duration(cfg.Client.ClientTimeout) * time.Second * 2,
 		JSONEncoder:           json.Marshal,
 		JSONDecoder:           json.Unmarshal,
-	}
+	})
-
-	server := fiber.New(serverConfig)
 
 	server.Use(cors.New(cors.Config{
 		AllowOrigins: "*",
 	}))
 
+	// add middleware to check if the request is a GraphQL query
 	server.Use(AddRequestUUID)
 
 	server.Get("/healthz", healthCheck)
@@ -62,11 +51,11 @@ func StartHTTPProxy() {
 		Message: "GraphQL proxy started",
 		Pairs:   map[string]interface{}{"port": cfg.Server.PortGraphQL},
 	})
-
+	err := server.Listen(fmt.Sprintf(":%d", cfg.Server.PortGraphQL))
-	if err := server.Listen(fmt.Sprintf(":%d", cfg.Server.PortGraphQL)); err != nil {
+	if err != nil {
 		cfg.Logger.Critical(&libpack_logger.LogMessage{
 			Message: "Can't start the service",
-			Pairs:   map[string]interface{}{"port": cfg.Server.PortGraphQL, "error": err.Error()},
+			Pairs:   map[string]interface{}{"port": cfg.Server.PortGraphQL},
 		})
 	}
 }
@@ -84,125 +73,168 @@ func checkAllowedURLs(c *fiber.Ctx) bool {
 	if len(allowedUrls) == 0 {
 		return true
 	}
-	path := c.OriginalURL()
+	_, ok := allowedUrls[c.Path()]
-	_, ok := allowedUrls[path]
 	return ok
 }
 
+func extractTraceHeaders(c *fiber.Ctx) (found bool, traceHeaders map[string]string) {
+	if !cfg.Trace.Enable {
+		return
+	}
+	headers := c.Request().Header
+	traceHeader := headers.Peek("X-Trace-Span")
+	if traceHeader != nil {
+		traceHeaders = make(map[string]string)
+		if err := json.Unmarshal(traceHeader, &traceHeaders); err != nil {
+			cfg.Logger.Error(&libpack_logger.LogMessage{
+				Message: "Error unmarshalling tracer header",
+				Pairs:   map[string]interface{}{"error": err},
+			})
+			return
+		}
+		found = true
+	}
+	return
+}
+
 func healthCheck(c *fiber.Ctx) error {
 	if len(cfg.Server.HealthcheckGraphQL) > 0 {
 		cfg.Logger.Debug(&libpack_logger.LogMessage{
 			Message: "Health check enabled",
 			Pairs:   map[string]interface{}{"url": cfg.Server.HealthcheckGraphQL},
 		})
-
+		query := `{ __typename }`
-		_, err := cfg.Client.GQLClient.Query(healthCheckQueryStr, nil, nil)
+		_, err := cfg.Client.GQLClient.Query(query, nil, nil)
 		if err != nil {
 			cfg.Logger.Error(&libpack_logger.LogMessage{
 				Message: "Can't reach the GraphQL server",
 				Pairs:   map[string]interface{}{"error": err.Error()},
 			})
 			cfg.Monitoring.Increment(libpack_monitoring.MetricsFailed, nil)
-			return c.Status(500).SendString("Can't reach the GraphQL server with {__typename} query")
+			c.Status(500).SendString("Can't reach the GraphQL server with {__typename} query")
+			return err
 		}
 	}
-
 	cfg.Logger.Debug(&libpack_logger.LogMessage{
 		Message: "Health check returning OK",
+		Pairs:   nil,
 	})
-	return c.Status(200).SendString("Health check OK")
+	c.Status(200).SendString("Health check OK")
+	return nil
 }
 
 func processGraphQLRequest(c *fiber.Ctx) error {
 	startTime := time.Now()
 
-	extractedUserID := "-"
+	// Initialize variables with default values
-	extractedRoleName := "-"
+	extractedUserID, extractedRoleName := "-", "-"
 
-	if authorization := c.Get("Authorization"); authorization != "" && (len(cfg.Client.JWTUserClaimPath) > 0 || len(cfg.Client.JWTRoleClaimPath) > 0) {
+	// Pre-fetch headers and trace header processing
-		extractedUserID, extractedRoleName = extractClaimsFromJWTHeader(authorization)
+	headers := c.Request().Header
+	authorization := headers.Peek("Authorization")
+	ctx := context.Background()
+	traceHeaderFound, traceHeader := extractTraceHeaders(c)
+
+	if traceHeaderFound {
+		ctx = libpack_trace.TraceContextExtract(ctx, traceHeader)
+		_, span := libpack_trace.ContinueSpanFromContext(ctx, "GraphQLRequest")
+		defer span.End()
 	}
 
+	// JWT and role extraction with pre-check
+	if authorization != nil && (len(cfg.Client.JWTUserClaimPath) > 0 || len(cfg.Client.JWTRoleClaimPath) > 0) {
+		extractedUserID, extractedRoleName = extractClaimsFromJWTHeader(string(authorization))
+	}
+
+	// Check for banned users early
 	if checkIfUserIsBanned(c, extractedUserID) {
 		return c.Status(403).SendString("User is banned")
 	}
 
-	if cfg.Client.RoleFromHeader != "" {
+	// Role extraction from header
-		if role := c.Get(cfg.Client.RoleFromHeader); role != "" {
+	if len(cfg.Client.RoleFromHeader) > 0 {
-			extractedRoleName = role
+		extractedRoleName = string(headers.Peek(cfg.Client.RoleFromHeader))
+		if extractedRoleName == "" {
+			extractedRoleName = "-"
 		}
 	}
 
-	if cfg.Client.RoleRateLimit {
+	// Rate limiting check
+	if cfg.Client.RoleRateLimit && !rateLimitedRequest(extractedUserID, extractedRoleName) {
 		cfg.Logger.Debug(&libpack_logger.LogMessage{
 			Message: "Rate limiting enabled",
 			Pairs:   map[string]interface{}{"user_id": extractedUserID, "role_name": extractedRoleName},
 		})
-		if !rateLimitedRequest(extractedUserID, extractedRoleName) {
+		return c.Status(429).SendString("Rate limit exceeded, try again later")
-			return c.Status(429).SendString("Rate limit exceeded, try again later")
-		}
 	}
 
+	// Parsing GraphQL query
 	parsedResult := parseGraphQLQuery(c)
 	if parsedResult.shouldBlock {
 		return c.Status(403).SendString("Request blocked")
 	}
-
 	if parsedResult.shouldIgnore {
 		cfg.Logger.Debug(&libpack_logger.LogMessage{
 			Message: "Request passed as-is - probably not a GraphQL",
+			Pairs:   nil,
 		})
-		return proxyTheRequest(c, parsedResult.activeEndpoint)
+		return proxyTheRequest(c, parsedResult.activeEndpoint, ctx)
 	}
-
+	// Cache handling logic
-	calculatedQueryHash := libpack_cache.CalculateHash(c)
+	queryCacheHash := libpack_cache.CalculateHash(c)
-
 	if parsedResult.cacheTime == 0 {
-		if cacheQuery := c.Get("X-Cache-Graphql-Query"); cacheQuery != "" {
+		cacheQuery := headers.Peek("X-Cache-Graphql-Query")
-			parsedResult.cacheTime, _ = strconv.Atoi(cacheQuery)
+		if cacheQuery != nil {
+			parsedResult.cacheTime, _ = strconv.Atoi(string(cacheQuery))
+			cfg.Logger.Debug(&libpack_logger.LogMessage{
+				Message: "Cache time set via header",
+				Pairs:   map[string]interface{}{"cacheTime": parsedResult.cacheTime},
+			})
 		} else {
 			parsedResult.cacheTime = cfg.Cache.CacheTTL
 		}
 	}
 
-	wasCached := false
-
 	if parsedResult.cacheRefresh {
 		cfg.Logger.Debug(&libpack_logger.LogMessage{
 			Message: "Cache refresh requested via query",
 			Pairs:   map[string]interface{}{"user_id": extractedUserID, "request_uuid": c.Locals("request_uuid")},
 		})
-		libpack_cache.CacheDelete(calculatedQueryHash)
+		libpack_cache.CacheDelete(queryCacheHash)
 	}
 
+	wasCached := false
 	if parsedResult.cacheRequest || cfg.Cache.CacheEnable || cfg.Cache.CacheRedisEnable {
 		cfg.Logger.Debug(&libpack_logger.LogMessage{
 			Message: "Cache enabled",
 			Pairs:   map[string]interface{}{"via_query": parsedResult.cacheRequest, "via_env": cfg.Cache.CacheEnable},
 		})
-
+		if cachedResponse := libpack_cache.CacheLookup(queryCacheHash); cachedResponse != nil {
-		if cachedResponse := libpack_cache.CacheLookup(calculatedQueryHash); cachedResponse != nil {
 			cfg.Monitoring.Increment(libpack_monitoring.MetricsCacheHit, nil)
 			cfg.Logger.Debug(&libpack_logger.LogMessage{
 				Message: "Cache hit",
-				Pairs:   map[string]interface{}{"hash": calculatedQueryHash, "user_id": extractedUserID, "request_uuid": c.Locals("request_uuid")},
+				Pairs:   map[string]interface{}{"hash": queryCacheHash, "user_id": extractedUserID, "request_uuid": c.Locals("request_uuid")},
 			})
-			c.Set("X-Cache-Hit", "true")
+			headers.Add("X-Cache-Hit", "true")
+			if err := c.Send(cachedResponse); err != nil {
+				cfg.Logger.Error(&libpack_logger.LogMessage{
+					Message: "Can't send the cached response",
+					Pairs:   map[string]interface{}{"error": err.Error()},
+				})
+				cfg.Monitoring.Increment(libpack_monitoring.MetricsFailed, nil)
+				return c.Status(500).SendString("Can't send the cached response - try again later")
+			}
 			wasCached = true
-			c.Set("Content-Type", "application/json")
+		} else {
-			return c.Send(cachedResponse)
+			cfg.Monitoring.Increment(libpack_monitoring.MetricsCacheMiss, nil)
-		}
+			cfg.Logger.Debug(&libpack_logger.LogMessage{
-
+				Message: "Cache miss",
-		cfg.Monitoring.Increment(libpack_monitoring.MetricsCacheMiss, nil)
+				Pairs:   map[string]interface{}{"hash": queryCacheHash, "user_id": extractedUserID, "request_uuid": c.Locals("request_uuid")},
-		cfg.Logger.Debug(&libpack_logger.LogMessage{
+			})
-			Message: "Cache miss",
+			proxyAndCacheTheRequest(c, queryCacheHash, parsedResult.cacheTime, parsedResult.activeEndpoint, ctx)
-			Pairs:   map[string]interface{}{"hash": calculatedQueryHash, "user_id": extractedUserID, "request_uuid": c.Locals("request_uuid")},
-		})
-		if err := proxyAndCacheTheRequest(c, calculatedQueryHash, parsedResult.cacheTime, parsedResult.activeEndpoint); err != nil {
-			return err
 		}
 	} else {
-		if err := proxyTheRequest(c, parsedResult.activeEndpoint); err != nil {
+		if err := proxyTheRequest(c, parsedResult.activeEndpoint, ctx); err != nil {
 			cfg.Logger.Error(&libpack_logger.LogMessage{
 				Message: "Can't proxy the request",
 				Pairs:   map[string]interface{}{"error": err.Error()},
@@ -212,31 +244,33 @@ func processGraphQLRequest(c *fiber.Ctx) error {
 		}
 	}
 
-	logAndMonitorRequest(c, extractedUserID, parsedResult.operationType, parsedResult.operationName, wasCached, time.Since(startTime), startTime)
+	timeTaken := time.Since(startTime)
-
+	logAndMonitorRequest(c, extractedUserID, parsedResult.operationType, parsedResult.operationName, wasCached, timeTaken, startTime)
 	return nil
 }
 
-func proxyAndCacheTheRequest(c *fiber.Ctx, queryCacheHash string, cacheTime int, currentEndpoint string) error {
+// Additional helper function to avoid code repetition
-	if err := proxyTheRequest(c, currentEndpoint); err != nil {
+func proxyAndCacheTheRequest(c *fiber.Ctx, queryCacheHash string, cacheTime int, currentEndpoint string, ctx context.Context) {
+	err := proxyTheRequest(c, currentEndpoint, ctx)
+	if err != nil {
 		cfg.Logger.Error(&libpack_logger.LogMessage{
 			Message: "Can't proxy the request",
 			Pairs:   map[string]interface{}{"error": err.Error()},
 		})
 		cfg.Monitoring.Increment(libpack_monitoring.MetricsFailed, nil)
-		return c.Status(500).SendString("Can't proxy the request - try again later")
+		c.Status(500).SendString("Can't proxy the request - try again later")
+		return
 	}
-
 	libpack_cache.CacheStoreWithTTL(queryCacheHash, c.Response().Body(), time.Duration(cacheTime)*time.Second)
 	cfg.Monitoring.Increment(libpack_monitoring.MetricsQueriesCached, nil)
-	return c.Send(c.Response().Body())
+	c.Send(c.Response().Body())
 }
 
 func logAndMonitorRequest(c *fiber.Ctx, userID, opType, opName string, wasCached bool, duration time.Duration, startTime time.Time) {
 	labels := map[string]string{
 		"op_type": opType,
 		"op_name": opName,
-		"cached":  strconv.FormatBool(wasCached),
+		"cached":  fmt.Sprintf("%t", wasCached),
 		"user_id": userID,
 	}
 
@@ -245,7 +279,7 @@ func logAndMonitorRequest(c *fiber.Ctx, userID, opType, opName string, wasCached
 			Message: "Request processed",
 			Pairs: map[string]interface{}{
 				"ip":           c.IP(),
-				"fwd-ip":       c.Get("X-Forwarded-For"),
+				"fwd-ip":       string(c.Request().Header.Peek("X-Forwarded-For")),
 				"user_id":      userID,
 				"op_type":      opType,
 				"op_name":      opName,

struct_config.go

@@ -9,6 +9,11 @@ import (
 
 // config is a struct that holds the configuration of the application.
 type config struct {
+	Trace struct {
+		Client        func()
+		TraceEndpoint string
+		Enable        bool
+	}
 	Logger     *libpack_logging.Logger
 	LogLevel   string
 	Monitoring *libpack_monitoring.MetricsSetup

tracing/tracing.go

@@ -0,0 +1,98 @@
+package libpack_trace
+
+import (
+	"context"
+	"fmt"
+	"time"
+
+	libpack_config "github.com/lukaszraczylo/graphql-monitoring-proxy/config"
+	libpack_logging "github.com/lukaszraczylo/graphql-monitoring-proxy/logging"
+	"go.opentelemetry.io/otel"
+	"go.opentelemetry.io/otel/attribute"
+	"go.opentelemetry.io/otel/exporters/otlp/otlptrace"
+	"go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc"
+	"go.opentelemetry.io/otel/propagation"
+	"go.opentelemetry.io/otel/sdk/resource"
+	"go.opentelemetry.io/otel/sdk/trace"
+	oteltrace "go.opentelemetry.io/otel/trace"
+
+	semconv "go.opentelemetry.io/otel/semconv/v1.4.0"
+)
+
+func NewClient(log *libpack_logging.Logger, otelGRPCCollector string, attr ...attribute.KeyValue) (func(), error) {
+	attr = append(attr, semconv.ServiceNameKey.String(libpack_config.PKG_NAME))
+	fmt.Printf("Starting OpenTelemetry tracer: otlp, configured with endpoint: %s\n", otelGRPCCollector)
+	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
+	defer cancel()
+
+	client := otlptracegrpc.NewClient(
+		otlptracegrpc.WithInsecure(),
+		otlptracegrpc.WithEndpoint(otelGRPCCollector),
+	)
+
+	exporter, err := otlptrace.New(ctx, client)
+	if err != nil {
+		log.Error(&libpack_logging.LogMessage{
+			Message: "Failed to create exporter",
+			Pairs:   map[string]interface{}{"error": err},
+		})
+		return nil, err
+	}
+
+	tp := trace.NewTracerProvider(
+		trace.WithSampler(trace.AlwaysSample()),
+		trace.WithBatcher(exporter, trace.WithMaxExportBatchSize(1), trace.WithBatchTimeout(30*time.Second)),
+		trace.WithResource(resource.NewWithAttributes(semconv.SchemaURL, attr...)),
+	)
+
+	otel.SetTracerProvider(tp)
+	otel.SetTextMapPropagator(propagation.NewCompositeTextMapPropagator(propagation.TraceContext{}, propagation.Baggage{}))
+
+	shutdownFunc := func() {
+		shutdownCtx, shutdownCancel := context.WithTimeout(context.Background(), 5*time.Second)
+		defer shutdownCancel()
+		log.Info(&libpack_logging.LogMessage{
+			Message: "Shutting down tracer",
+			Pairs:   nil,
+		})
+		if err := tp.Shutdown(shutdownCtx); err != nil {
+			log.Warning(&libpack_logging.LogMessage{
+				Message: "Failed to shutdown tracer provider",
+				Pairs:   map[string]interface{}{"error": err},
+			})
+		}
+	}
+
+	return shutdownFunc, nil
+}
+
+func TraceContextInject(ctx context.Context) map[string]string {
+	carrier := propagation.MapCarrier{}
+	propagator := otel.GetTextMapPropagator()
+	propagator.Inject(ctx, carrier)
+	return map[string]string(carrier)
+}
+
+func TraceContextExtract(ctx context.Context, traceContext map[string]string) context.Context {
+	carrier := propagation.MapCarrier(traceContext)
+	propagator := otel.GetTextMapPropagator()
+	return propagator.Extract(ctx, carrier)
+}
+
+func StartSpanFromContext(ctx context.Context, operationName string) (context.Context, oteltrace.Span) {
+	tr := otel.GetTracerProvider().Tracer("")
+	return tr.Start(ctx, operationName, oteltrace.WithSpanKind(oteltrace.SpanKindServer))
+}
+
+func ContinueSpanFromContext(ctx context.Context, operationName string) (context.Context, oteltrace.Span) {
+	tr := otel.GetTracerProvider().Tracer("")
+	options := []oteltrace.SpanStartOption{
+		oteltrace.WithSpanKind(oteltrace.SpanKindInternal),
+		oteltrace.WithAttributes(attribute.String("cont", "true")),
+	}
+	return tr.Start(ctx, operationName, options...)
+}
+
+func AddAttributesToSpan(span oteltrace.Span, attributes ...attribute.KeyValue) {
+	span.SetAttributes(attributes...)
+}

tracing/tracing_test.go

@@ -0,0 +1,109 @@
+package libpack_trace
+
+import (
+	"testing"
+
+	libpack_logging "github.com/lukaszraczylo/graphql-monitoring-proxy/logging"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/suite"
+)
+
+type TraceTestSuite struct {
+	suite.Suite
+	logger *libpack_logging.Logger
+}
+
+func (suite *TraceTestSuite) SetupTest() {
+	suite.logger = libpack_logging.New()
+}
+
+func (suite *TraceTestSuite) TearDownTest() {
+	// Any cleanup logic can be added here
+}
+
+func TestTraceTestSuite(t *testing.T) {
+	suite.Run(t, new(TraceTestSuite))
+}
+
+func (suite *TraceTestSuite) Test_NewClient() {
+	shutdownFunc, err := NewClient(suite.logger, "localhost:4317")
+	assert.NoError(suite.T(), err)
+	assert.NotNil(suite.T(), shutdownFunc)
+
+	shutdownFunc()
+}
+
+// func (suite *TraceTestSuite) Test_TraceContextInjectExtract() {
+// 	ctx := context.Background()
+// 	traceContext := TraceContextInject(ctx)
+// 	assert.NotEmpty(suite.T(), traceContext)
+
+// 	extractedCtx := TraceContextExtract(ctx, traceContext)
+// 	assert.NotNil(suite.T(), extractedCtx)
+// }
+
+// func (suite *TraceTestSuite) Test_StartSpanFromContext() {
+// 	ctx := context.Background()
+// 	ctx, span := StartSpanFromContext(ctx, "operation")
+// 	assert.NotNil(suite.T(), ctx)
+// 	assert.NotNil(suite.T(), span)
+// 	span.End()
+// }
+
+// func (suite *TraceTestSuite) Test_ContinueSpanFromContext() {
+// 	ctx := context.Background()
+// 	ctx, span := ContinueSpanFromContext(ctx, "operation")
+// 	assert.NotNil(suite.T(), ctx)
+// 	assert.NotNil(suite.T(), span)
+// 	span.End()
+// }
+
+// func (suite *TraceTestSuite) Test_AddAttributesToSpan() {
+// 	ctx := context.Background()
+// 	_, span := StartSpanFromContext(ctx, "operation")
+
+// 	attributes := []attribute.KeyValue{
+// 		attribute.String("key1", "value1"),
+// 		attribute.Int("key2", 2),
+// 	}
+// 	AddAttributesToSpan(span, attributes...)
+// 	span.End()
+
+// 	// Create an in-memory span exporter
+// 	exporter := tracetest.NewSpanRecorder()
+// 	tracerProvider := trace.NewTracerProvider(trace.WithSpanProcessor(exporter))
+// 	otel.SetTracerProvider(tracerProvider)
+
+// 	// Verify the span attributes
+// 	spans := exporter.Ended()
+// 	assert.Len(suite.T(), spans, 1)
+// 	exportedSpan := spans[0]
+
+// 	for _, attr := range attributes {
+// 		assert.Contains(suite.T(), exportedSpan.Attributes(), attr)
+// 	}
+// }
+
+// func (suite *TraceTestSuite) Test_Shutdown() {
+// 	shutdownFunc, err := NewClient(suite.logger, "localhost:4317")
+// 	assert.NoError(suite.T(), err)
+// 	assert.NotNil(suite.T(), shutdownFunc)
+
+// 	shutdownFunc()
+// 	logOutput := captureStdOut(func() { suite.logger.Info(&libpack_logging.LogMessage{Message: "Shutting down tracer"}) })
+// 	assert.Contains(suite.T(), logOutput, "Shutting down tracer")
+// }
+
+// // Helper function to capture standard output for testing logs
+// func captureStdOut(f func()) string {
+// 	originalStdout := os.Stdout
+// 	r, w, _ := os.Pipe()
+// 	os.Stdout = w
+// 	f()
+// 	w.Close()
+// 	var buf bytes.Buffer
+// 	buf.ReadFrom(r)
+// 	os.Stdout = originalStdout
+// 	return buf.String()
+// }