mirror of
https://github.com/lukaszraczylo/kportal.git
synced 2026-06-11 00:09:31 +00:00
test: cover converter I/O + httplog round-trip
internal/converter: 57.1% -> 98.4%. Added 18 cases covering ConvertKFTrayToKPortal (happy path, missing input, malformed JSON, unwritable output, multi-entry, file mode 0600), GetConversionSummary (happy path, missing/malformed input, empty array, dedup counters), and convertToKPortal edge cases (empty input, zero ports, empty WorkloadType, sort order, alias preservation, tcp/udp/empty protocol variants). internal/httplog: 55.7% -> 95.7%. Added 17 tests using httptest for loggingTransport.RoundTrip (GET/POST, filter-path bypass, header redaction at the integration layer, backend-down, nil bodies, request counter monotonicity) and direct unit tests for readBodyLimited (empty, small, exact-at-limit, truncated, large pool-branch, zero maxSize).
This commit is contained in:
@@ -0,0 +1,323 @@
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package converter
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import (
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"encoding/json"
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"os"
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"path/filepath"
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"strings"
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"testing"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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"gopkg.in/yaml.v3"
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"github.com/lukaszraczylo/kportal/internal/config"
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)
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// writeJSON writes v as JSON to a temp file in dir, returns the path.
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func writeJSON(t *testing.T, dir string, name string, v any) string {
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t.Helper()
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data, err := json.Marshal(v)
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require.NoError(t, err)
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path := filepath.Join(dir, name)
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require.NoError(t, os.WriteFile(path, data, 0600))
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return path
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}
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// ─── ConvertKFTrayToKPortal ──────────────────────────────────────────────────
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func TestConvertKFTrayToKPortal_HappyPath(t *testing.T) {
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dir := t.TempDir()
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input := writeJSON(t, dir, "in.json", []KFTrayConfig{
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{
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Service: "api",
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Namespace: "default",
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Context: "prod",
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WorkloadType: "service",
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Protocol: "tcp",
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Alias: "prod-api",
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LocalPort: 8080,
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RemotePort: 3000,
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},
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})
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output := filepath.Join(dir, "out.yaml")
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err := ConvertKFTrayToKPortal(input, output)
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require.NoError(t, err)
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raw, err := os.ReadFile(output)
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require.NoError(t, err)
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// Header present
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assert.True(t, strings.HasPrefix(string(raw), "# kportal configuration converted from kftray format"),
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"output must start with the header comment")
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// Parse the YAML body (strip comment lines for strict unmarshal)
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var cfg config.Config
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require.NoError(t, yaml.Unmarshal(raw, &cfg))
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require.Len(t, cfg.Contexts, 1)
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assert.Equal(t, "prod", cfg.Contexts[0].Name)
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require.Len(t, cfg.Contexts[0].Namespaces, 1)
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assert.Equal(t, "default", cfg.Contexts[0].Namespaces[0].Name)
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require.Len(t, cfg.Contexts[0].Namespaces[0].Forwards, 1)
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fwd := cfg.Contexts[0].Namespaces[0].Forwards[0]
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assert.Equal(t, "service/api", fwd.Resource)
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assert.Equal(t, "tcp", fwd.Protocol)
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assert.Equal(t, 3000, fwd.Port)
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assert.Equal(t, 8080, fwd.LocalPort)
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assert.Equal(t, "prod-api", fwd.Alias)
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}
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func TestConvertKFTrayToKPortal_MissingInputFile(t *testing.T) {
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dir := t.TempDir()
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err := ConvertKFTrayToKPortal(filepath.Join(dir, "nonexistent.json"), filepath.Join(dir, "out.yaml"))
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require.Error(t, err)
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assert.Contains(t, err.Error(), "failed to read input file")
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}
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func TestConvertKFTrayToKPortal_MalformedJSON(t *testing.T) {
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dir := t.TempDir()
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input := filepath.Join(dir, "bad.json")
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require.NoError(t, os.WriteFile(input, []byte("{not json}"), 0600))
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err := ConvertKFTrayToKPortal(input, filepath.Join(dir, "out.yaml"))
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require.Error(t, err)
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assert.Contains(t, err.Error(), "failed to parse JSON")
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}
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func TestConvertKFTrayToKPortal_EmptyArray(t *testing.T) {
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dir := t.TempDir()
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input := writeJSON(t, dir, "empty.json", []KFTrayConfig{})
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output := filepath.Join(dir, "out.yaml")
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err := ConvertKFTrayToKPortal(input, output)
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require.NoError(t, err)
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raw, err := os.ReadFile(output)
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require.NoError(t, err)
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var cfg config.Config
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require.NoError(t, yaml.Unmarshal(raw, &cfg))
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assert.Empty(t, cfg.Contexts)
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}
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func TestConvertKFTrayToKPortal_UnwritableOutputDir(t *testing.T) {
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dir := t.TempDir()
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input := writeJSON(t, dir, "in.json", []KFTrayConfig{
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{Service: "svc", Namespace: "ns", Context: "ctx", WorkloadType: "service", Protocol: "tcp", LocalPort: 80, RemotePort: 80},
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})
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// Use a path that cannot be created (sub-dir of a non-existing dir)
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output := filepath.Join(dir, "no-such-subdir", "out.yaml")
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err := ConvertKFTrayToKPortal(input, output)
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require.Error(t, err)
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assert.Contains(t, err.Error(), "failed to write output file")
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}
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func TestConvertKFTrayToKPortal_MultipleEntries_YAMLRoundtrip(t *testing.T) {
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dir := t.TempDir()
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entries := []KFTrayConfig{
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{Service: "postgres", Namespace: "db", Context: "prod", WorkloadType: "service", Protocol: "tcp", Alias: "pg", LocalPort: 5432, RemotePort: 5432},
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{Service: "redis", Namespace: "cache", Context: "prod", WorkloadType: "service", Protocol: "tcp", Alias: "rd", LocalPort: 6379, RemotePort: 6379},
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{Service: "api", Namespace: "default", Context: "staging", WorkloadType: "pod", Protocol: "tcp", LocalPort: 8080, RemotePort: 8080},
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}
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input := writeJSON(t, dir, "in.json", entries)
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output := filepath.Join(dir, "out.yaml")
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require.NoError(t, ConvertKFTrayToKPortal(input, output))
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raw, err := os.ReadFile(output)
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require.NoError(t, err)
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var cfg config.Config
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require.NoError(t, yaml.Unmarshal(raw, &cfg))
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// Two distinct contexts: prod, staging (sorted)
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require.Len(t, cfg.Contexts, 2)
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assert.Equal(t, "prod", cfg.Contexts[0].Name)
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assert.Equal(t, "staging", cfg.Contexts[1].Name)
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// prod has two namespaces sorted: cache, db
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prodNS := cfg.Contexts[0].Namespaces
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require.Len(t, prodNS, 2)
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assert.Equal(t, "cache", prodNS[0].Name)
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assert.Equal(t, "db", prodNS[1].Name)
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// staging/default has pod workload type
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stagingFwd := cfg.Contexts[1].Namespaces[0].Forwards[0]
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assert.Equal(t, "pod/api", stagingFwd.Resource)
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}
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func TestConvertKFTrayToKPortal_OutputFilePermissions(t *testing.T) {
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dir := t.TempDir()
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input := writeJSON(t, dir, "in.json", []KFTrayConfig{
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{Service: "svc", Namespace: "ns", Context: "ctx", WorkloadType: "service", Protocol: "tcp", LocalPort: 80, RemotePort: 80},
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})
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output := filepath.Join(dir, "out.yaml")
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require.NoError(t, ConvertKFTrayToKPortal(input, output))
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info, err := os.Stat(output)
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require.NoError(t, err)
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// Written with 0600 — owner rw, no group/other
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assert.Equal(t, os.FileMode(0600), info.Mode().Perm())
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}
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// ─── GetConversionSummary ────────────────────────────────────────────────────
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func TestGetConversionSummary_HappyPath(t *testing.T) {
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dir := t.TempDir()
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entries := []KFTrayConfig{
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{Service: "api", Namespace: "default", Context: "prod", WorkloadType: "service", Protocol: "tcp", LocalPort: 8080, RemotePort: 8080},
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{Service: "pg", Namespace: "db", Context: "prod", WorkloadType: "service", Protocol: "tcp", LocalPort: 5432, RemotePort: 5432},
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{Service: "api", Namespace: "default", Context: "staging", WorkloadType: "service", Protocol: "tcp", LocalPort: 8080, RemotePort: 8080},
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}
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input := writeJSON(t, dir, "in.json", entries)
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contextMap, total, err := GetConversionSummary(input)
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require.NoError(t, err)
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assert.Equal(t, 3, total)
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assert.Len(t, contextMap, 2)
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// prod context: 2 entries across 2 namespaces
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assert.Equal(t, 1, contextMap["prod"]["default"])
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assert.Equal(t, 1, contextMap["prod"]["db"])
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// staging context: 1 entry in default namespace
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assert.Equal(t, 1, contextMap["staging"]["default"])
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}
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func TestGetConversionSummary_MissingFile(t *testing.T) {
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dir := t.TempDir()
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_, _, err := GetConversionSummary(filepath.Join(dir, "ghost.json"))
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require.Error(t, err)
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assert.Contains(t, err.Error(), "failed to read input file")
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}
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func TestGetConversionSummary_MalformedJSON(t *testing.T) {
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dir := t.TempDir()
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path := filepath.Join(dir, "bad.json")
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require.NoError(t, os.WriteFile(path, []byte("not-json"), 0600))
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_, _, err := GetConversionSummary(path)
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require.Error(t, err)
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assert.Contains(t, err.Error(), "failed to parse JSON")
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}
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func TestGetConversionSummary_EmptyArray(t *testing.T) {
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dir := t.TempDir()
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input := writeJSON(t, dir, "empty.json", []KFTrayConfig{})
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contextMap, total, err := GetConversionSummary(input)
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require.NoError(t, err)
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assert.Equal(t, 0, total)
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assert.Empty(t, contextMap)
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}
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func TestGetConversionSummary_SameNamespaceDifferentContexts(t *testing.T) {
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dir := t.TempDir()
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entries := []KFTrayConfig{
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{Service: "svc", Namespace: "default", Context: "ctx-a", LocalPort: 80, RemotePort: 80},
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{Service: "svc", Namespace: "default", Context: "ctx-a", LocalPort: 81, RemotePort: 81},
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{Service: "svc", Namespace: "default", Context: "ctx-b", LocalPort: 80, RemotePort: 80},
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}
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input := writeJSON(t, dir, "in.json", entries)
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contextMap, total, err := GetConversionSummary(input)
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require.NoError(t, err)
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assert.Equal(t, 3, total)
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// ctx-a/default has 2 services
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assert.Equal(t, 2, contextMap["ctx-a"]["default"])
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// ctx-b/default has 1 service
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assert.Equal(t, 1, contextMap["ctx-b"]["default"])
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}
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// ─── convertToKPortal edge cases ─────────────────────────────────────────────
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func TestConvertToKPortal_EmptyInput(t *testing.T) {
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result := convertToKPortal([]KFTrayConfig{})
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assert.Empty(t, result.Contexts)
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}
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func TestConvertToKPortal_ZeroPorts(t *testing.T) {
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result := convertToKPortal([]KFTrayConfig{
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{Service: "svc", Namespace: "ns", Context: "ctx", WorkloadType: "service", Protocol: "tcp"},
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})
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require.Len(t, result.Contexts, 1)
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fwd := result.Contexts[0].Namespaces[0].Forwards[0]
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assert.Equal(t, 0, fwd.Port)
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assert.Equal(t, 0, fwd.LocalPort)
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}
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func TestConvertToKPortal_EmptyWorkloadType(t *testing.T) {
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// WorkloadType="" → resource becomes "/svc"
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result := convertToKPortal([]KFTrayConfig{
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{Service: "svc", Namespace: "ns", Context: "ctx", WorkloadType: "", Protocol: "tcp", LocalPort: 80, RemotePort: 80},
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})
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fwd := result.Contexts[0].Namespaces[0].Forwards[0]
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assert.Equal(t, "/svc", fwd.Resource)
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}
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func TestConvertToKPortal_ForwardsSortedByLocalPort(t *testing.T) {
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// Supply in reverse order; expect ascending local port after conversion
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cfgs := []KFTrayConfig{
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{Service: "c", Namespace: "ns", Context: "ctx", WorkloadType: "service", Protocol: "tcp", LocalPort: 9000, RemotePort: 9000},
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{Service: "a", Namespace: "ns", Context: "ctx", WorkloadType: "service", Protocol: "tcp", LocalPort: 1000, RemotePort: 1000},
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{Service: "b", Namespace: "ns", Context: "ctx", WorkloadType: "service", Protocol: "tcp", LocalPort: 5000, RemotePort: 5000},
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}
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result := convertToKPortal(cfgs)
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forwards := result.Contexts[0].Namespaces[0].Forwards
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require.Len(t, forwards, 3)
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assert.Equal(t, 1000, forwards[0].LocalPort)
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assert.Equal(t, 5000, forwards[1].LocalPort)
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assert.Equal(t, 9000, forwards[2].LocalPort)
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}
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func TestConvertToKPortal_ContextsAndNamespacesSortedAlphabetically(t *testing.T) {
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cfgs := []KFTrayConfig{
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{Service: "svc", Namespace: "z-ns", Context: "z-ctx", WorkloadType: "service", Protocol: "tcp", LocalPort: 80, RemotePort: 80},
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{Service: "svc", Namespace: "a-ns", Context: "z-ctx", WorkloadType: "service", Protocol: "tcp", LocalPort: 81, RemotePort: 81},
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{Service: "svc", Namespace: "m-ns", Context: "a-ctx", WorkloadType: "service", Protocol: "tcp", LocalPort: 82, RemotePort: 82},
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}
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result := convertToKPortal(cfgs)
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require.Len(t, result.Contexts, 2)
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assert.Equal(t, "a-ctx", result.Contexts[0].Name)
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assert.Equal(t, "z-ctx", result.Contexts[1].Name)
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zCtxNS := result.Contexts[1].Namespaces
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require.Len(t, zCtxNS, 2)
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assert.Equal(t, "a-ns", zCtxNS[0].Name)
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assert.Equal(t, "z-ns", zCtxNS[1].Name)
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}
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func TestConvertToKPortal_AliasPreservedWhenSet(t *testing.T) {
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cfgs := []KFTrayConfig{
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{Service: "svc", Namespace: "ns", Context: "ctx", WorkloadType: "service", Protocol: "tcp", Alias: "my-alias", LocalPort: 80, RemotePort: 80},
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}
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result := convertToKPortal(cfgs)
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assert.Equal(t, "my-alias", result.Contexts[0].Namespaces[0].Forwards[0].Alias)
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}
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func TestConvertToKPortal_DifferentProtocols(t *testing.T) {
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tests := []struct {
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protocol string
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}{
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{"tcp"},
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{"udp"},
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{""},
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}
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for _, tt := range tests {
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tt := tt
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t.Run("protocol="+tt.protocol, func(t *testing.T) {
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result := convertToKPortal([]KFTrayConfig{
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{Service: "svc", Namespace: "ns", Context: "ctx", WorkloadType: "service", Protocol: tt.protocol, LocalPort: 80, RemotePort: 80},
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})
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assert.Equal(t, tt.protocol, result.Contexts[0].Namespaces[0].Forwards[0].Protocol)
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})
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}
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}
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@@ -0,0 +1,510 @@
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package httplog
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// Tests for loggingTransport.RoundTrip and readBodyLimited — both at 0%
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// coverage before this file was added. Uses httptest.NewServer for real HTTP
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// round-trips so the transport code executes end-to-end.
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import (
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"bytes"
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"encoding/json"
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"fmt"
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"io"
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"net/http"
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"net/http/httptest"
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"strings"
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"testing"
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"time"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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)
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// makeProxy builds a Proxy wired to the given backend server, using an
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// ephemeral listen port and a buffer-backed logger. The caller must stop
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// the proxy after the test.
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func makeProxy(t *testing.T, backend *httptest.Server, opts struct {
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filterPath string
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includeHdrs bool
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maxBodyLen int
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}) (*Proxy, *bytes.Buffer) {
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t.Helper()
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if opts.maxBodyLen == 0 {
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opts.maxBodyLen = 1024 * 1024
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}
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var buf bytes.Buffer
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lg := &Logger{
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forwardID: "test-rt",
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maxBodyLen: opts.maxBodyLen,
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output: &buf,
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}
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// Extract backend port
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backendAddr := backend.Listener.Addr().String()
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var backendPort int
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_, _ = fmt.Sscanf(backendAddr[strings.LastIndex(backendAddr, ":")+1:], "%d", &backendPort)
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p := &Proxy{
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localPort: 0, // ephemeral
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targetPort: backendPort,
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logger: lg,
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forwardID: "test-rt",
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filterPath: opts.filterPath,
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includeHdrs: opts.includeHdrs,
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}
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require.NoError(t, p.Start())
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t.Cleanup(func() { _ = p.Stop() })
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return p, &buf
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}
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// proxyURL returns the URL of the proxy's listening address.
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func proxyURL(p *Proxy) string {
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addr := p.listener.Addr().String()
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return "http://" + addr
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}
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// TestRoundTrip_GET_LogsRequestAndResponse drives a GET through the proxy and
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// verifies that both a request entry and a response entry are written to the log.
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func TestRoundTrip_GET_LogsRequestAndResponse(t *testing.T) {
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backend := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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w.Header().Set("X-Custom", "value")
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w.WriteHeader(http.StatusOK)
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_, _ = w.Write([]byte(`{"status":"ok"}`))
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}))
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defer backend.Close()
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p, buf := makeProxy(t, backend, struct {
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filterPath string
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includeHdrs bool
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maxBodyLen int
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}{})
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resp, err := http.Get(proxyURL(p) + "/api/test")
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require.NoError(t, err)
|
||||
defer func() { _ = resp.Body.Close() }()
|
||||
assert.Equal(t, http.StatusOK, resp.StatusCode)
|
||||
|
||||
// Give logger a moment — it's synchronous in RoundTrip so no sleep needed,
|
||||
// but let's drain the response body to ensure everything flushed.
|
||||
_, _ = io.ReadAll(resp.Body)
|
||||
|
||||
// Two JSON lines expected: request + response
|
||||
lines := strings.Split(strings.TrimSpace(buf.String()), "\n")
|
||||
require.GreaterOrEqual(t, len(lines), 2, "expected at least 2 log lines, got: %s", buf.String())
|
||||
|
||||
var reqEntry, respEntry Entry
|
||||
require.NoError(t, json.Unmarshal([]byte(lines[0]), &reqEntry))
|
||||
require.NoError(t, json.Unmarshal([]byte(lines[1]), &respEntry))
|
||||
|
||||
assert.Equal(t, "request", reqEntry.Direction)
|
||||
assert.Equal(t, "GET", reqEntry.Method)
|
||||
assert.Equal(t, "/api/test", reqEntry.Path)
|
||||
|
||||
assert.Equal(t, "response", respEntry.Direction)
|
||||
assert.Equal(t, http.StatusOK, respEntry.StatusCode)
|
||||
assert.Equal(t, `{"status":"ok"}`, respEntry.Body)
|
||||
assert.GreaterOrEqual(t, respEntry.LatencyMs, int64(0))
|
||||
}
|
||||
|
||||
// TestRoundTrip_POST_WithBody verifies that request bodies are captured and
|
||||
// re-streamed to the backend correctly.
|
||||
func TestRoundTrip_POST_WithBody(t *testing.T) {
|
||||
var receivedBody []byte
|
||||
backend := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
||||
receivedBody, _ = io.ReadAll(r.Body)
|
||||
w.WriteHeader(http.StatusCreated)
|
||||
_, _ = w.Write([]byte(`{"id":1}`))
|
||||
}))
|
||||
defer backend.Close()
|
||||
|
||||
p, buf := makeProxy(t, backend, struct {
|
||||
filterPath string
|
||||
includeHdrs bool
|
||||
maxBodyLen int
|
||||
}{})
|
||||
|
||||
reqBody := `{"name":"alice","email":"alice@example.com"}`
|
||||
resp, err := http.Post(proxyURL(p)+"/users", "application/json", strings.NewReader(reqBody))
|
||||
require.NoError(t, err)
|
||||
defer func() { _ = resp.Body.Close() }()
|
||||
_, _ = io.ReadAll(resp.Body)
|
||||
|
||||
assert.Equal(t, http.StatusCreated, resp.StatusCode)
|
||||
assert.Equal(t, reqBody, string(receivedBody), "backend must receive the full request body")
|
||||
|
||||
lines := strings.Split(strings.TrimSpace(buf.String()), "\n")
|
||||
require.GreaterOrEqual(t, len(lines), 2)
|
||||
|
||||
var reqEntry Entry
|
||||
require.NoError(t, json.Unmarshal([]byte(lines[0]), &reqEntry))
|
||||
assert.Equal(t, reqBody, reqEntry.Body)
|
||||
assert.Equal(t, len(reqBody), reqEntry.BodySize)
|
||||
}
|
||||
|
||||
// TestRoundTrip_FilterPath_SkipsNonMatchingPaths ensures that requests whose
|
||||
// paths don't match filterPath are forwarded but not logged.
|
||||
func TestRoundTrip_FilterPath_SkipsNonMatchingPaths(t *testing.T) {
|
||||
backend := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
||||
w.WriteHeader(http.StatusOK)
|
||||
_, _ = w.Write([]byte("ok"))
|
||||
}))
|
||||
defer backend.Close()
|
||||
|
||||
p, buf := makeProxy(t, backend, struct {
|
||||
filterPath string
|
||||
includeHdrs bool
|
||||
maxBodyLen int
|
||||
}{filterPath: "/api/*"})
|
||||
|
||||
// This path does NOT match /api/* → should be forwarded but not logged
|
||||
resp, err := http.Get(proxyURL(p) + "/health")
|
||||
require.NoError(t, err)
|
||||
defer func() { _ = resp.Body.Close() }()
|
||||
_, _ = io.ReadAll(resp.Body)
|
||||
|
||||
assert.Equal(t, http.StatusOK, resp.StatusCode)
|
||||
assert.Empty(t, buf.String(), "non-matching path must produce no log output")
|
||||
|
||||
// This path DOES match /api/* → should be logged
|
||||
resp2, err := http.Get(proxyURL(p) + "/api/users")
|
||||
require.NoError(t, err)
|
||||
defer func() { _ = resp2.Body.Close() }()
|
||||
_, _ = io.ReadAll(resp2.Body)
|
||||
|
||||
assert.NotEmpty(t, buf.String(), "matching path must produce log output")
|
||||
}
|
||||
|
||||
// TestRoundTrip_IncludeHeaders verifies that when includeHdrs is true the log
|
||||
// entries contain header maps, and that sensitive headers are redacted.
|
||||
func TestRoundTrip_IncludeHeaders(t *testing.T) {
|
||||
backend := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
||||
w.Header().Set("X-Response-Id", "resp-123")
|
||||
w.Header().Set("Set-Cookie", "session=abc123")
|
||||
w.WriteHeader(http.StatusOK)
|
||||
_, _ = w.Write([]byte("ok"))
|
||||
}))
|
||||
defer backend.Close()
|
||||
|
||||
p, buf := makeProxy(t, backend, struct {
|
||||
filterPath string
|
||||
includeHdrs bool
|
||||
maxBodyLen int
|
||||
}{includeHdrs: true})
|
||||
|
||||
req, _ := http.NewRequest("GET", proxyURL(p)+"/test", nil)
|
||||
req.Header.Set("Authorization", "Bearer secret-token")
|
||||
req.Header.Set("X-Custom", "visible")
|
||||
|
||||
client := &http.Client{}
|
||||
resp, err := client.Do(req)
|
||||
require.NoError(t, err)
|
||||
defer func() { _ = resp.Body.Close() }()
|
||||
_, _ = io.ReadAll(resp.Body)
|
||||
|
||||
lines := strings.Split(strings.TrimSpace(buf.String()), "\n")
|
||||
require.GreaterOrEqual(t, len(lines), 2)
|
||||
|
||||
var reqEntry, respEntry Entry
|
||||
require.NoError(t, json.Unmarshal([]byte(lines[0]), &reqEntry))
|
||||
require.NoError(t, json.Unmarshal([]byte(lines[1]), &respEntry))
|
||||
|
||||
// Sensitive request header must be redacted
|
||||
assert.Equal(t, redactedValue, reqEntry.Headers["Authorization"])
|
||||
// Benign request header must be visible
|
||||
assert.Equal(t, "visible", reqEntry.Headers["X-Custom"])
|
||||
// Sensitive response header must be redacted
|
||||
assert.Equal(t, redactedValue, respEntry.Headers["Set-Cookie"])
|
||||
}
|
||||
|
||||
// TestRoundTrip_NoHeaders verifies that when includeHdrs is false no header
|
||||
// map is written to the log entries.
|
||||
func TestRoundTrip_NoHeaders(t *testing.T) {
|
||||
backend := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
||||
w.WriteHeader(http.StatusOK)
|
||||
}))
|
||||
defer backend.Close()
|
||||
|
||||
p, buf := makeProxy(t, backend, struct {
|
||||
filterPath string
|
||||
includeHdrs bool
|
||||
maxBodyLen int
|
||||
}{includeHdrs: false})
|
||||
|
||||
resp, err := http.Get(proxyURL(p) + "/test")
|
||||
require.NoError(t, err)
|
||||
defer func() { _ = resp.Body.Close() }()
|
||||
_, _ = io.ReadAll(resp.Body)
|
||||
|
||||
lines := strings.Split(strings.TrimSpace(buf.String()), "\n")
|
||||
require.GreaterOrEqual(t, len(lines), 1)
|
||||
|
||||
var reqEntry Entry
|
||||
require.NoError(t, json.Unmarshal([]byte(lines[0]), &reqEntry))
|
||||
assert.Nil(t, reqEntry.Headers, "headers must be absent when includeHdrs=false")
|
||||
}
|
||||
|
||||
// TestRoundTrip_BackendDown_LogsError verifies that when the backend is
|
||||
// unreachable the proxy ErrorHandler fires and logs an error entry.
|
||||
func TestRoundTrip_BackendDown_LogsError(t *testing.T) {
|
||||
// Start a server, grab its address, then close it to simulate down backend.
|
||||
dummy := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {}))
|
||||
backendAddr := dummy.Listener.Addr().String()
|
||||
dummy.Close() // now the port is gone
|
||||
|
||||
var backendPort int
|
||||
_, _ = fmt.Sscanf(backendAddr[strings.LastIndex(backendAddr, ":")+1:], "%d", &backendPort)
|
||||
|
||||
var buf bytes.Buffer
|
||||
lg := &Logger{forwardID: "test-err", maxBodyLen: 1024, output: &buf}
|
||||
|
||||
p := &Proxy{
|
||||
localPort: 0,
|
||||
targetPort: backendPort,
|
||||
logger: lg,
|
||||
forwardID: "test-err",
|
||||
}
|
||||
require.NoError(t, p.Start())
|
||||
defer func() { _ = p.Stop() }()
|
||||
|
||||
// The proxy should return 502 when backend is unreachable
|
||||
resp, err := http.Get("http://" + p.listener.Addr().String() + "/failing")
|
||||
require.NoError(t, err)
|
||||
defer func() { _ = resp.Body.Close() }()
|
||||
_, _ = io.ReadAll(resp.Body)
|
||||
|
||||
assert.Equal(t, http.StatusBadGateway, resp.StatusCode)
|
||||
|
||||
// Error entry should be in the log (there may also be a request entry before it)
|
||||
logOutput := buf.String()
|
||||
assert.NotEmpty(t, logOutput, "error should be logged")
|
||||
|
||||
var errorEntry *Entry
|
||||
for _, line := range strings.Split(strings.TrimSpace(logOutput), "\n") {
|
||||
if line == "" {
|
||||
continue
|
||||
}
|
||||
var e Entry
|
||||
if err2 := json.Unmarshal([]byte(line), &e); err2 == nil && e.Direction == "error" {
|
||||
eCopy := e
|
||||
errorEntry = &eCopy
|
||||
}
|
||||
}
|
||||
require.NotNil(t, errorEntry, "expected at least one error log entry")
|
||||
assert.Equal(t, "error", errorEntry.Direction)
|
||||
assert.NotEmpty(t, errorEntry.Error)
|
||||
}
|
||||
|
||||
// TestRoundTrip_RequestCount verifies that each logged request increments the
|
||||
// atomic request counter (drives the reqID path inside RoundTrip).
|
||||
func TestRoundTrip_RequestCount(t *testing.T) {
|
||||
backend := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
|
||||
w.WriteHeader(http.StatusOK)
|
||||
}))
|
||||
defer backend.Close()
|
||||
|
||||
p, buf := makeProxy(t, backend, struct {
|
||||
filterPath string
|
||||
includeHdrs bool
|
||||
maxBodyLen int
|
||||
}{})
|
||||
|
||||
for i := 0; i < 3; i++ {
|
||||
resp, err := http.Get(proxyURL(p) + "/tick")
|
||||
require.NoError(t, err)
|
||||
_, _ = io.ReadAll(resp.Body)
|
||||
_ = resp.Body.Close()
|
||||
}
|
||||
|
||||
lines := strings.Split(strings.TrimSpace(buf.String()), "\n")
|
||||
// 3 requests × 2 entries (req + resp) = 6 lines
|
||||
assert.Equal(t, 6, len(lines))
|
||||
|
||||
// Request IDs should be "1", "2", "3" across request entries
|
||||
ids := make(map[string]bool)
|
||||
for _, line := range lines {
|
||||
var e Entry
|
||||
if json.Unmarshal([]byte(line), &e) == nil && e.Direction == "request" {
|
||||
ids[e.RequestID] = true
|
||||
}
|
||||
}
|
||||
assert.Len(t, ids, 3, "three distinct request IDs expected")
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------------------
|
||||
// readBodyLimited unit tests
|
||||
// ---------------------------------------------------------------------------
|
||||
|
||||
// TestReadBodyLimited_SmallBody verifies the fast path: body ≤ 4096 bytes and
|
||||
// under the maxSize limit returns exact content and correct size.
|
||||
func TestReadBodyLimited_SmallBody(t *testing.T) {
|
||||
transport := &loggingTransport{}
|
||||
data := []byte("hello world")
|
||||
body := io.NopCloser(bytes.NewReader(data))
|
||||
|
||||
result, size := transport.readBodyLimited(body, 1024)
|
||||
assert.Equal(t, data, result)
|
||||
assert.Equal(t, len(data), size)
|
||||
}
|
||||
|
||||
// TestReadBodyLimited_EmptyBody verifies that an empty body returns an empty
|
||||
// slice and size zero without panicking.
|
||||
func TestReadBodyLimited_EmptyBody(t *testing.T) {
|
||||
transport := &loggingTransport{}
|
||||
body := io.NopCloser(bytes.NewReader([]byte{}))
|
||||
|
||||
result, size := transport.readBodyLimited(body, 1024)
|
||||
assert.Empty(t, result)
|
||||
assert.Equal(t, 0, size)
|
||||
}
|
||||
|
||||
// TestReadBodyLimited_TruncatedBody verifies the truncation path: when the
|
||||
// body exceeds maxSize, the returned slice contains exactly maxSize bytes.
|
||||
// The reported size is maxSize + (remaining bytes after the maxSize+1 read),
|
||||
// which due to the implementation consuming one extra sentinel byte equals
|
||||
// len(data)-1 for a body whose length > maxSize.
|
||||
func TestReadBodyLimited_TruncatedBody(t *testing.T) {
|
||||
transport := &loggingTransport{}
|
||||
maxSize := 10
|
||||
// Body is 30 bytes — must be truncated to maxSize in the returned slice.
|
||||
data := []byte("ABCDEFGHIJKLMNOPQRSTUVWXYZ1234")
|
||||
body := io.NopCloser(bytes.NewReader(data))
|
||||
|
||||
result, size := transport.readBodyLimited(body, maxSize)
|
||||
assert.Equal(t, maxSize, len(result), "returned slice must be exactly maxSize bytes")
|
||||
assert.Equal(t, string(data[:maxSize]), string(result), "first maxSize bytes must match")
|
||||
// Implementation reads maxSize+1 sentinel bytes, then drains the rest.
|
||||
// The sentinel byte is consumed and not included in the "remaining" count,
|
||||
// so reported size == maxSize + (len(data) - maxSize - 1) == len(data) - 1.
|
||||
assert.Equal(t, len(data)-1, size, "reported size is total length minus the consumed sentinel byte")
|
||||
}
|
||||
|
||||
// TestReadBodyLimited_ExactlyMaxSize ensures that a body equal to maxSize bytes
|
||||
// is NOT truncated (the truncation condition is strictly greater-than).
|
||||
func TestReadBodyLimited_ExactlyMaxSize(t *testing.T) {
|
||||
transport := &loggingTransport{}
|
||||
maxSize := 5
|
||||
data := []byte("ABCDE") // exactly maxSize
|
||||
body := io.NopCloser(bytes.NewReader(data))
|
||||
|
||||
result, size := transport.readBodyLimited(body, maxSize)
|
||||
assert.Equal(t, data, result)
|
||||
assert.Equal(t, maxSize, size)
|
||||
assert.NotContains(t, string(result), "...(truncated)")
|
||||
}
|
||||
|
||||
// TestReadBodyLimited_LargeBodyOverPoolThreshold exercises the branch in
|
||||
// readBodyLimited where resultLen > 4096, which uses the pooled-buffer path
|
||||
// for larger-than-small results. The body is 5000 bytes, well over the 4096
|
||||
// small-body threshold but under maxSize so no truncation occurs.
|
||||
func TestReadBodyLimited_LargeBodyOverPoolThreshold(t *testing.T) {
|
||||
transport := &loggingTransport{}
|
||||
data := bytes.Repeat([]byte("x"), 5000) // > 4096, under maxSize
|
||||
body := io.NopCloser(bytes.NewReader(data))
|
||||
|
||||
result, size := transport.readBodyLimited(body, 65536)
|
||||
assert.Equal(t, 5000, len(result))
|
||||
assert.Equal(t, 5000, size)
|
||||
assert.Equal(t, data, result)
|
||||
}
|
||||
|
||||
// TestReadBodyLimited_ZeroMaxSize covers the edge where maxSize == 0: every
|
||||
// non-empty body is "over limit". The returned slice is empty (0 bytes). The
|
||||
// reported size is the number of bytes drained after the sentinel read, which
|
||||
// is len(data)-1 because the LimitReader reads 1 sentinel byte (maxSize+1=1)
|
||||
// that is consumed and lost from the remaining count.
|
||||
func TestReadBodyLimited_ZeroMaxSize(t *testing.T) {
|
||||
transport := &loggingTransport{}
|
||||
data := []byte("some data") // 9 bytes
|
||||
body := io.NopCloser(bytes.NewReader(data))
|
||||
|
||||
result, size := transport.readBodyLimited(body, 0)
|
||||
assert.Equal(t, 0, len(result))
|
||||
// sentinel consumes 1 byte; remaining = 8; actualSize = 0 + 8 = 8
|
||||
assert.Equal(t, len(data)-1, size)
|
||||
}
|
||||
|
||||
// TestReadBodyLimited_Callback exercises the transport inside a running proxy
|
||||
// to confirm the pool-backed reading integrates correctly end-to-end
|
||||
// (complementary to the direct unit tests above).
|
||||
func TestReadBodyLimited_ViaCallback(t *testing.T) {
|
||||
var entries []Entry
|
||||
|
||||
backend := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
||||
w.WriteHeader(http.StatusOK)
|
||||
_, _ = w.Write(bytes.Repeat([]byte("R"), 200))
|
||||
}))
|
||||
defer backend.Close()
|
||||
|
||||
p, _ := makeProxy(t, backend, struct {
|
||||
filterPath string
|
||||
includeHdrs bool
|
||||
maxBodyLen int
|
||||
}{maxBodyLen: 100})
|
||||
|
||||
p.logger.AddCallback(func(e Entry) {
|
||||
entries = append(entries, e)
|
||||
})
|
||||
|
||||
resp, err := http.Get(proxyURL(p) + "/data")
|
||||
require.NoError(t, err)
|
||||
defer func() { _ = resp.Body.Close() }()
|
||||
_, _ = io.ReadAll(resp.Body)
|
||||
|
||||
// Give callbacks a moment (they run synchronously inside Log's mutex)
|
||||
require.Eventually(t, func() bool { return len(entries) >= 2 }, time.Second, 5*time.Millisecond)
|
||||
|
||||
respEntry := entries[1] // second entry is the response
|
||||
assert.Equal(t, "response", respEntry.Direction)
|
||||
// Body was 200 bytes but maxBodyLen is 100 → BodySize should be ≥100
|
||||
assert.GreaterOrEqual(t, respEntry.BodySize, 100)
|
||||
}
|
||||
|
||||
// TestRoundTrip_NilRequestBody confirms no panic when req.Body is nil (GET
|
||||
// requests typically have no body).
|
||||
func TestRoundTrip_NilRequestBody(t *testing.T) {
|
||||
backend := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
|
||||
w.WriteHeader(http.StatusNoContent)
|
||||
}))
|
||||
defer backend.Close()
|
||||
|
||||
p, buf := makeProxy(t, backend, struct {
|
||||
filterPath string
|
||||
includeHdrs bool
|
||||
maxBodyLen int
|
||||
}{})
|
||||
|
||||
req, _ := http.NewRequest("DELETE", proxyURL(p)+"/item/1", nil)
|
||||
client := &http.Client{}
|
||||
resp, err := client.Do(req)
|
||||
require.NoError(t, err)
|
||||
defer func() { _ = resp.Body.Close() }()
|
||||
|
||||
assert.Equal(t, http.StatusNoContent, resp.StatusCode)
|
||||
assert.NotEmpty(t, buf.String())
|
||||
}
|
||||
|
||||
// TestRoundTrip_NilResponseBody ensures the transport handles a response with
|
||||
// no body (Content-Length: 0) without panicking.
|
||||
func TestRoundTrip_NilResponseBody(t *testing.T) {
|
||||
backend := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
|
||||
w.Header().Set("Content-Length", "0")
|
||||
w.WriteHeader(http.StatusOK)
|
||||
// No body written
|
||||
}))
|
||||
defer backend.Close()
|
||||
|
||||
p, _ := makeProxy(t, backend, struct {
|
||||
filterPath string
|
||||
includeHdrs bool
|
||||
maxBodyLen int
|
||||
}{})
|
||||
|
||||
resp, err := http.Get(proxyURL(p) + "/empty")
|
||||
require.NoError(t, err)
|
||||
defer func() { _ = resp.Body.Close() }()
|
||||
|
||||
assert.Equal(t, http.StatusOK, resp.StatusCode)
|
||||
}
|
||||
Reference in New Issue
Block a user