mirror of
https://github.com/lukaszraczylo/graphql-monitoring-proxy.git
synced 2026-06-05 23:03:48 +00:00
improvements mid may 2025 (#24)
* General improvements and bug fixes. * Improve tests coverage. * fixup! Improve tests coverage. * Update README.md with latest changes. * Fix the uint32 * Resolve issue with race condition for logging. * fixup! Merge remote-tracking branch 'origin/main' into improvements-mid-apr-2025 * Fix the test of the rate limiter * Add default ratelimit.json file * Update dependencies. * Significant refactor. * fixup! Significant refactor. * fixup! Merge remote-tracking branch 'origin/main' into improvements-mid-apr-2025 * fixup! fixup! Merge remote-tracking branch 'origin/main' into improvements-mid-apr-2025 * fixup! fixup! fixup! Merge remote-tracking branch 'origin/main' into improvements-mid-apr-2025 * fixup! fixup! fixup! fixup! fixup! Merge remote-tracking branch 'origin/main' into improvements-mid-apr-2025 * fixup! fixup! fixup! fixup! fixup! fixup! Merge remote-tracking branch 'origin/main' into improvements-mid-apr-2025 * fixup! fixup! fixup! fixup! fixup! fixup! fixup! Merge remote-tracking branch 'origin/main' into improvements-mid-apr-2025 * fixup! fixup! fixup! fixup! fixup! fixup! fixup! fixup! Merge remote-tracking branch 'origin/main' into improvements-mid-apr-2025 * fixup! fixup! fixup! fixup! fixup! fixup! fixup! fixup! fixup! Merge remote-tracking branch 'origin/main' into improvements-mid-apr-2025 * fixup! fixup! fixup! fixup! fixup! fixup! fixup! fixup! fixup! fixup! Merge remote-tracking branch 'origin/main' into improvements-mid-apr-2025
This commit is contained in:
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package main
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import (
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"bytes"
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"compress/gzip"
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"fmt"
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"net/http"
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"net/http/httptest"
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"time"
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"github.com/gofiber/fiber/v2"
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"github.com/valyala/fasthttp"
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)
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// Tests for error handling in gzip decompression and general error propagation
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// TestGzipHandling tests proper handling of gzipped responses
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func (suite *Tests) TestGzipHandling() {
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// Create a test server that returns gzipped content
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server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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// Set the Content-Encoding header to indicate gzipped content
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w.Header().Set("Content-Encoding", "gzip")
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// Create a gzipped response
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var buf bytes.Buffer
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gzipWriter := gzip.NewWriter(&buf)
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payload := `{"data":{"test":"gzipped response"}}`
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_, _ = gzipWriter.Write([]byte(payload))
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_ = gzipWriter.Close()
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// Send the gzipped data
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w.WriteHeader(http.StatusOK)
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_, _ = w.Write(buf.Bytes())
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}))
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defer server.Close()
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// Store original client and restore after test
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originalClient := cfg.Client.FastProxyClient
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defer func() {
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cfg.Client.FastProxyClient = originalClient
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}()
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// Configure client for test
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cfg.Client.ClientTimeout = 5
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cfg.Client.FastProxyClient = createFasthttpClient(cfg)
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// Configure server URL
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cfg.Server.HostGraphQL = server.URL
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// Create request context
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reqCtx := &fasthttp.RequestCtx{}
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reqCtx.Request.SetRequestURI("/graphql")
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reqCtx.Request.Header.SetMethod("POST")
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reqCtx.Request.Header.Set("Content-Type", "application/json")
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reqCtx.Request.SetBody([]byte(`{"query": "query { test }"}`))
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// Create fiber context
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ctx := suite.app.AcquireCtx(reqCtx)
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defer suite.app.ReleaseCtx(ctx)
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// Call the proxy function
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err := proxyTheRequest(ctx, cfg.Server.HostGraphQL)
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// Verify success
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suite.Nil(err, "proxyTheRequest should succeed with gzipped content")
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suite.Equal(fiber.StatusOK, ctx.Response().StatusCode(), "Response status should be 200 OK")
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// Verify the content was properly decompressed
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responseBody := string(ctx.Response().Body())
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suite.Contains(responseBody, "gzipped response", "Response should contain the decompressed content")
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// Verify the Content-Encoding header was removed
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suite.Equal("", string(ctx.Response().Header.Peek("Content-Encoding")),
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"Content-Encoding header should be removed after decompression")
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}
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// TestInvalidGzipHandling tests handling of responses with invalid gzip data
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func (suite *Tests) TestInvalidGzipHandling() {
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// Create a test server that returns invalid gzipped content
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server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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// Set the Content-Encoding header to indicate gzipped content
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w.Header().Set("Content-Encoding", "gzip")
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// Send invalid gzip data
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w.WriteHeader(http.StatusOK)
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_, _ = w.Write([]byte("This is not valid gzip data"))
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}))
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defer server.Close()
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// Store original client and restore after test
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originalClient := cfg.Client.FastProxyClient
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defer func() {
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cfg.Client.FastProxyClient = originalClient
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}()
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// Configure client for test
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cfg.Client.ClientTimeout = 5
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cfg.Client.FastProxyClient = createFasthttpClient(cfg)
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// Configure server URL
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cfg.Server.HostGraphQL = server.URL
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// Create request context
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reqCtx := &fasthttp.RequestCtx{}
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reqCtx.Request.SetRequestURI("/graphql")
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reqCtx.Request.Header.SetMethod("POST")
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reqCtx.Request.Header.Set("Content-Type", "application/json")
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reqCtx.Request.SetBody([]byte(`{"query": "query { test }"}`))
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// Create fiber context
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ctx := suite.app.AcquireCtx(reqCtx)
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defer suite.app.ReleaseCtx(ctx)
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// Call the proxy function
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err := proxyTheRequest(ctx, cfg.Server.HostGraphQL)
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// Verify error handling
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suite.NotNil(err, "proxyTheRequest should return error with invalid gzip data")
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suite.Contains(err.Error(), "gzip", "Error should mention gzip decompression issue")
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}
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// TestErrorPropagation tests that various errors are properly propagated
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func (suite *Tests) TestErrorPropagation() {
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tests := []struct {
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name string
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serverHandler func(w http.ResponseWriter, r *http.Request)
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expectedError string
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}{
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{
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name: "5xx_error",
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serverHandler: func(w http.ResponseWriter, r *http.Request) {
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w.WriteHeader(http.StatusInternalServerError)
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_, _ = w.Write([]byte(`{"errors":[{"message":"Internal server error"}]}`))
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},
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expectedError: "received non-200 response",
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},
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{
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name: "malformed_json_response",
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serverHandler: func(w http.ResponseWriter, r *http.Request) {
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w.WriteHeader(http.StatusOK)
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_, _ = w.Write([]byte(`{malformed json`))
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},
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expectedError: "", // No error expected, as we don't validate JSON format
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},
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{
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name: "empty_response",
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serverHandler: func(w http.ResponseWriter, r *http.Request) {
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w.WriteHeader(http.StatusOK)
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// Empty response body
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},
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expectedError: "", // No error expected, empty responses are valid
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},
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}
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for _, tt := range tests {
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suite.Run(tt.name, func() {
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// Create a test server with the current test handler
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server := httptest.NewServer(http.HandlerFunc(tt.serverHandler))
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defer server.Close()
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// Store original client and restore after test
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originalClient := cfg.Client.FastProxyClient
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defer func() {
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cfg.Client.FastProxyClient = originalClient
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}()
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// Configure client for test
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cfg.Client.ClientTimeout = 5
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cfg.Client.FastProxyClient = createFasthttpClient(cfg)
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// Configure server URL
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cfg.Server.HostGraphQL = server.URL
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// Create request context
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reqCtx := &fasthttp.RequestCtx{}
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reqCtx.Request.SetRequestURI("/graphql")
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reqCtx.Request.Header.SetMethod("POST")
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reqCtx.Request.Header.Set("Content-Type", "application/json")
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reqCtx.Request.SetBody([]byte(`{"query": "query { test }"}`))
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// Create fiber context
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ctx := suite.app.AcquireCtx(reqCtx)
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defer suite.app.ReleaseCtx(ctx)
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// Call the proxy function
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err := proxyTheRequest(ctx, cfg.Server.HostGraphQL)
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// Verify error handling based on test case
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if tt.expectedError != "" {
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suite.NotNil(err, "proxyTheRequest should return error")
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suite.Contains(err.Error(), tt.expectedError,
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"Error should contain expected message")
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} else {
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suite.Nil(err, "proxyTheRequest should not return error")
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}
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})
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}
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}
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// TestMiddlewareErrorPropagation tests error propagation through the middleware chain
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func (suite *Tests) TestMiddlewareErrorPropagation() {
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// Setup a basic middleware chain that mimics the production setup
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testMiddleware := func(c *fiber.Ctx) error {
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// Access request path to check proper error propagation
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path := c.Path()
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if path == "/error-path" {
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return fmt.Errorf("middleware error")
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}
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return c.Next()
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}
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app := fiber.New()
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app.Use(testMiddleware)
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// Setup the handler that would receive the request after middleware
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app.Post("/graphql", func(c *fiber.Ctx) error {
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// This should not be called if middleware returns error
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return c.Status(fiber.StatusOK).JSON(fiber.Map{"data": "success"})
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})
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// Test successful path
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req := httptest.NewRequest("POST", "/graphql", nil)
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resp, err := app.Test(req)
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suite.Nil(err, "App test should not error")
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suite.Equal(fiber.StatusOK, resp.StatusCode, "Status should be 200 OK")
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// Test error path
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req = httptest.NewRequest("POST", "/error-path", nil)
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resp, err = app.Test(req)
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suite.Nil(err, "App test should not error")
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suite.NotEqual(fiber.StatusOK, resp.StatusCode, "Status should not be 200 OK")
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// Check that error status was properly propagated
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suite.Equal(fiber.StatusInternalServerError, resp.StatusCode,
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"Error status should be 500 Internal Server Error")
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}
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// TestTimeout tests the proper handling of timeouts
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func (suite *Tests) TestTimeout() {
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// Skip this timing-sensitive test as it's prone to race conditions under race detection
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suite.T().Skip("Skipping timing-sensitive timeout test due to race conditions under race detection")
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// Create a test server that simulates a timeout
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server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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// Sleep longer than the client timeout
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time.Sleep(3 * time.Second)
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w.WriteHeader(http.StatusOK)
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_, _ = w.Write([]byte(`{"data":{"test":"response"}}`))
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}))
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defer server.Close()
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// Store original client and restore after test
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originalClient := cfg.Client.FastProxyClient
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originalTimeout := cfg.Client.ClientTimeout
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defer func() {
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cfg.Client.FastProxyClient = originalClient
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cfg.Client.ClientTimeout = originalTimeout
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}()
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// Configure client with a short timeout
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cfg.Client.ClientTimeout = 1 // 1 second
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cfg.Client.FastProxyClient = createFasthttpClient(cfg)
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// Configure server URL
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cfg.Server.HostGraphQL = server.URL
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// Create request context
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reqCtx := &fasthttp.RequestCtx{}
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reqCtx.Request.SetRequestURI("/graphql")
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reqCtx.Request.Header.SetMethod("POST")
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reqCtx.Request.Header.Set("Content-Type", "application/json")
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reqCtx.Request.SetBody([]byte(`{"query": "query { test }"}`))
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// Create fiber context
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ctx := suite.app.AcquireCtx(reqCtx)
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defer suite.app.ReleaseCtx(ctx)
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// Call the proxy function
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err := proxyTheRequest(ctx, cfg.Server.HostGraphQL)
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// Verify timeout error handling
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suite.NotNil(err, "proxyTheRequest should return error on timeout")
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if err != nil {
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suite.Contains(err.Error(), "timeout", "Error should mention timeout")
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}
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}
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// TestLargeResponseHandling tests handling of large responses
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func (suite *Tests) TestLargeResponseHandling() {
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// Create a test server that returns a large response
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server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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// Generate a large response (1MB)
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largeResponse := make([]byte, 1024*1024)
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for i := 0; i < len(largeResponse); i++ {
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largeResponse[i] = byte(i % 256)
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}
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// Set headers and send response
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w.Header().Set("Content-Type", "application/json")
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w.WriteHeader(http.StatusOK)
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_, _ = w.Write(largeResponse)
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}))
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defer server.Close()
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// Store original client and restore after test
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originalClient := cfg.Client.FastProxyClient
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defer func() {
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cfg.Client.FastProxyClient = originalClient
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}()
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// Configure client for test
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cfg.Client.ClientTimeout = 10 // Longer timeout for large response
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cfg.Client.FastProxyClient = createFasthttpClient(cfg)
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// Configure server URL
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cfg.Server.HostGraphQL = server.URL
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// Create request context
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reqCtx := &fasthttp.RequestCtx{}
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reqCtx.Request.SetRequestURI("/graphql")
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reqCtx.Request.Header.SetMethod("POST")
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reqCtx.Request.Header.Set("Content-Type", "application/json")
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reqCtx.Request.SetBody([]byte(`{"query": "query { test }"}`))
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// Create fiber context
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ctx := suite.app.AcquireCtx(reqCtx)
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defer suite.app.ReleaseCtx(ctx)
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// Call the proxy function
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err := proxyTheRequest(ctx, cfg.Server.HostGraphQL)
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// Verify large response handling
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suite.Nil(err, "proxyTheRequest should handle large responses")
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suite.Equal(fiber.StatusOK, ctx.Response().StatusCode(), "Status should be 200 OK")
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suite.Equal(1024*1024, len(ctx.Response().Body()), "Response body should match expected size")
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}
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// Helper function to create gzipped data
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func createGzippedData(data []byte) []byte {
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var buf bytes.Buffer
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gw := gzip.NewWriter(&buf)
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_, _ = gw.Write(data)
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_ = gw.Close()
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return buf.Bytes()
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}
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