Files
runner/act/container/kubernetes_test.go
T
8c8950d9ef refactor(container): stream copies into the job and archives out of the host (#1340)
Adds `CopyTarStream` to the job environments. It extracts directories and files into the job as they are written, kept below the destination and owned by the job user along with any directories it creates, so built-in actions can put large content in place without buffering it. The host's `GetContainerArchive` now streams instead of building the archive in memory.

---------

Co-authored-by: silverwind <[email protected]>
Co-authored-by: silverwind <[email protected]>
Co-authored-by: Lunny Xiao <[email protected]>
Reviewed-on: https://gitea.com/gitea/runner/pulls/1340
Reviewed-by: Lunny Xiao <[email protected]>
Reviewed-by: silverwind <[email protected]>
Co-authored-by: bircni <[email protected]>
2026-11-06 02:22:40 +00:00

436 lines
19 KiB
Go

// Copyright 2026 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package container
import (
"archive/tar"
"bytes"
"encoding/json"
"errors"
"fmt"
"io"
"net/http"
"net/http/httptest"
"net/url"
"os"
"os/exec"
"path/filepath"
"runtime"
"strings"
"sync"
"testing"
"time"
"github.com/coder/websocket"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
type podManifest struct {
Metadata struct{ Labels map[string]string }
Spec struct {
AutomountServiceAccountToken bool
EnableServiceLinks bool
HostAliases []struct{ Hostnames []string }
Volumes []map[string]any
Containers []struct {
Name, ImagePullPolicy string
Resources map[string]any
StartupProbe *struct{ PeriodSeconds, TimeoutSeconds, FailureThreshold int }
}
}
}
type fakeCluster struct {
mu sync.Mutex
requests map[string][]string
execFailures []http.HandlerFunc
}
func (f *fakeCluster) record(request, content string) {
f.mu.Lock()
defer f.mu.Unlock()
f.requests[request] = append(f.requests[request], content)
}
func (f *fakeCluster) failExec(failures ...http.HandlerFunc) {
f.mu.Lock()
defer f.mu.Unlock()
f.execFailures = failures
}
func (f *fakeCluster) nextExecFailure() http.HandlerFunc {
f.mu.Lock()
defer f.mu.Unlock()
if len(f.execFailures) == 0 {
return nil
}
failure := f.execFailures[0]
f.execFailures = f.execFailures[1:]
return failure
}
// execFailure answers like the API server, code 0 for a failure reported after the websocket upgrade.
func execFailure(t *testing.T, code int, status string) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
if code != 0 {
w.WriteHeader(code)
_, _ = io.WriteString(w, status)
return
}
conn, err := websocket.Accept(w, r, &websocket.AcceptOptions{Subprotocols: []string{execProtocol}})
if err != nil {
t.Error(err)
return
}
defer func() { _ = conn.CloseNow() }()
_ = conn.Write(r.Context(), websocket.MessageBinary, append([]byte{3}, status...))
}
}
func fakeKubernetes(t *testing.T, podStatus string, env ...string) (string, *fakeCluster) {
cluster := &fakeCluster{requests: map[string][]string{}}
server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
if r.Header.Get("Authorization") != "Bearer test-token" {
w.WriteHeader(http.StatusUnauthorized)
return
}
body, err := io.ReadAll(r.Body)
assert.NoError(t, err)
cluster.record(r.Method+" "+r.URL.Path, string(body))
pods, secrets := "/api/v1/namespaces/ci/pods", "/api/v1/namespaces/ci/secrets"
switch {
case r.Method == http.MethodGet && r.URL.Path == pods:
cluster.record("list", r.URL.Query().Get("labelSelector"))
_, _ = io.WriteString(w, `{"items":[{"metadata":{"name":"old","creationTimestamp":"2020-01-01T00:00:00Z"}},{"metadata":{"name":"new","creationTimestamp":"2999-01-01T00:00:00Z"}}]}`)
case strings.HasSuffix(r.URL.Path, "/exec"):
cluster.record("exec", r.URL.RawQuery)
if failure := cluster.nextExecFailure(); failure != nil {
failure(w, r)
} else {
serveLocalExec(t, w, r, env)
}
case strings.HasSuffix(r.URL.Path, "/log"):
_, _ = io.WriteString(w, "log of "+r.URL.Query().Get("container"))
case r.Method == http.MethodGet && strings.HasPrefix(r.URL.Path, pods+"/"):
_, _ = io.WriteString(w, podStatus)
case r.Method == http.MethodPost && (r.URL.Path == pods || r.URL.Path == secrets), r.Method == http.MethodDelete:
default:
w.WriteHeader(http.StatusNotFound)
}
}))
t.Cleanup(server.Close)
kubeconfig := filepath.Join(t.TempDir(), "kubeconfig")
require.NoError(t, os.WriteFile(filepath.Join(filepath.Dir(kubeconfig), "token"), []byte("test-token\n"), 0o600))
require.NoError(t, os.WriteFile(kubeconfig, fmt.Appendf(nil, `
current-context: test
contexts: [{name: test, context: {cluster: test, user: test, namespace: ci}}]
clusters: [{name: test, cluster: {server: "http://kubernetes.invalid", proxy-url: %q}}]
users: [{name: test, user: {tokenFile: token}}]
`, server.URL), 0o600))
return kubeconfig, cluster
}
func serveLocalExec(t *testing.T, w http.ResponseWriter, r *http.Request, env []string) {
conn, err := websocket.Accept(w, r, &websocket.AcceptOptions{Subprotocols: []string{execProtocol}})
if err != nil {
t.Error(err)
return
}
defer func() { _ = conn.CloseNow() }()
conn.SetReadLimit(-1)
command := r.URL.Query()["command"]
var stdin bytes.Buffer
for r.URL.Query().Get("stdin") == "true" {
_, frame, err := conn.Read(r.Context())
if err != nil {
t.Error(err)
return
}
if frame[0] == 255 {
break
}
stdin.Write(frame[1:])
}
cmd := exec.Command(command[0], command[1:]...)
cmd.Env = append(append(os.Environ(), "COPYFILE_DISABLE=1"), env...)
var stdout, stderr bytes.Buffer
cmd.Stdin, cmd.Stdout, cmd.Stderr = &stdin, &stdout, &stderr
status := `{"status":"Success"}`
var exitErr *exec.ExitError
if err := cmd.Run(); errors.As(err, &exitErr) {
status = fmt.Sprintf(`{"status":"Failure","reason":"NonZeroExitCode","details":{"causes":[{"reason":"ExitCode","message":"%d"}]}}`, exitErr.ExitCode())
} else {
assert.NoError(t, err)
}
for _, frame := range [][]byte{append([]byte{1}, stdout.Bytes()...), append([]byte{2}, stderr.Bytes()...), append([]byte{3}, status...)} {
_ = conn.Write(r.Context(), websocket.MessageBinary, frame)
}
}
func TestKubernetesServiceHostnames(t *testing.T) {
for id, hostnames := range map[string][]string{
"db": {"db"},
"My_DB": {"my-db"},
"devstoreaccount1.azurite.local": {"devstoreaccount1-azurite-local", "devstoreaccount1.azurite.local"},
"DB.Local": {"db-local", "db.local"},
strings.Repeat("a", 64): {strings.Repeat("a", 63), strings.Repeat("a", 64)},
strings.Repeat("a", 254): {strings.Repeat("a", 63)},
} {
assert.Equal(t, hostnames, KubernetesServiceHostnames(id), id)
}
}
func TestKubernetesPodRunsJobThroughAPI(t *testing.T) {
t.Parallel()
if runtime.GOOS == "windows" {
t.Skip("uses POSIX shell")
}
ctx := t.Context()
workdir, err := filepath.EvalSymlinks(t.TempDir())
require.NoError(t, err)
path := workdir + ":" + os.Getenv("PATH")
kubeconfig, cluster := fakeKubernetes(t, `{"spec":{"containers":[{},{}]},"status":{"phase":"Running","containerStatuses":[
{"name":"job","ready":true,"state":{"running":{}}},
{"name":"my-db","ready":true,"state":{"running":{}}}]}}`, "PATH="+path)
options := KubernetesOptions{Kubeconfig: kubeconfig, RunnerUUID: "runner-uuid", PodTemplates: []map[string]any{
{"spec": map[string]any{
"automountServiceAccountToken": true,
"containers": []any{
map[string]any{"name": "job", "resources": map[string]any{"limits": map[string]any{"cpu": "2"}}},
map[string]any{
"name": "$services", "imagePullPolicy": "Always", "resources": map[string]any{"limits": map[string]any{"memory": "256Mi"}},
"env": []any{map[string]any{"name": "POSTGRES_PASSWORD", "value": "template"}},
},
},
}},
{"spec": map[string]any{
"volumes": []any{map[string]any{"name": "workspace", "emptyDir": map[string]any{"sizeLimit": "1Gi"}}},
"containers": []any{map[string]any{"name": "job", "resources": map[string]any{"limits": map[string]any{"memory": "1Gi"}}}},
}},
}}
pod, err := NewKubernetesPod(options)
require.NoError(t, err)
var jobLog, serviceLog bytes.Buffer
job := pod.JobContainer(&NewContainerInput{Name: "Job-Name", Image: "node", WorkingDir: workdir, Stdout: &jobLog, Stderr: &jobLog})
service := pod.ServiceContainer("My_DB", &NewContainerInput{
Image: "postgres",
Cmd: []string{"postgres", "-D", "$(PGDATA)"},
Env: []string{"POSTGRES_PASSWORD=service-secret"},
WorkflowOptions: "--health-cmd pg_isready --health-interval 2s --health-start-period 4s",
Stdout: &serviceLog,
})
require.NoError(t, job.Create(nil, nil)(ctx))
var manifest podManifest
require.NoError(t, json.Unmarshal([]byte(cluster.requests["POST /api/v1/namespaces/ci/pods"][0]), &manifest))
assert.Equal(t, "gitea-runner", manifest.Metadata.Labels["app.kubernetes.io/managed-by"])
assert.Equal(t, "runner-uuid", manifest.Metadata.Labels[runnerUUIDLabel])
assert.True(t, manifest.Spec.AutomountServiceAccountToken)
assert.False(t, manifest.Spec.EnableServiceLinks)
assert.Equal(t, []string{"my-db"}, manifest.Spec.HostAliases[0].Hostnames)
require.Len(t, manifest.Spec.Containers, 2)
assert.Equal(t, map[string]any{"limits": map[string]any{"cpu": "2", "memory": "1Gi"}}, manifest.Spec.Containers[0].Resources)
assert.Empty(t, manifest.Spec.Containers[0].ImagePullPolicy)
assert.Equal(t, "my-db", manifest.Spec.Containers[1].Name)
assert.Equal(t, "Always", manifest.Spec.Containers[1].ImagePullPolicy)
assert.Equal(t, map[string]any{"limits": map[string]any{"memory": "256Mi"}}, manifest.Spec.Containers[1].Resources)
assert.Equal(t, []map[string]any{
{"name": "workspace", "emptyDir": map[string]any{"sizeLimit": "1Gi"}},
{"name": "act", "emptyDir": map[string]any{}},
}, manifest.Spec.Volumes)
assert.Equal(t, struct{ PeriodSeconds, TimeoutSeconds, FailureThreshold int }{2, 30, 5}, *manifest.Spec.Containers[1].StartupProbe)
assert.NotContains(t, cluster.requests["POST /api/v1/namespaces/ci/pods"][0], "service-secret")
assert.Contains(t, cluster.requests["POST /api/v1/namespaces/ci/secrets"][0], "service-secret")
assert.Contains(t, cluster.requests["POST /api/v1/namespaces/ci/secrets"][0], `"com.gitea.runner.uuid":"runner-uuid"`)
assert.Contains(t, cluster.requests["POST /api/v1/namespaces/ci/pods"][0], `{"name":"POSTGRES_PASSWORD","valueFrom":{"secretKeyRef":{"key":"my-db.0","name":"`+pod.secretName+`"}}}`)
assert.Equal(t, []any{"new"}, mergeManifest([]any{"old"}, []any{"new"}, ""))
mount := func(path string) any { return map[string]any{"name": "config", "mountPath": path} }
assert.Equal(t, []any{mount("/a"), mount("/b")}, mergeManifest([]any{mount("/a")}, []any{mount("/b")}, "volumeMounts"))
tmpfs := map[string]any{"name": "workspace", "emptyDir": map[string]any{"medium": "Memory"}}
ephemeral := map[string]any{"name": "workspace", "ephemeral": map[string]any{}}
assert.Equal(t, []any{ephemeral}, mergeManifest([]any{tmpfs}, []any{ephemeral}, "volumes"))
assert.Contains(t, cluster.requests["POST /api/v1/namespaces/ci/pods"][0], `"args":["postgres","-D","$$(PGDATA)"]`)
require.NoError(t, os.WriteFile(filepath.Join(workdir, "env"), []byte("#!/bin/sh\necho \"$@\" > \"$0-args\"\nexec /usr/bin/env \"$@\"\n"), 0o755))
cluster.failExec(
execFailure(t, http.StatusInternalServerError, `{"message":"error dialing backend: remote error: tls: internal error"}`),
execFailure(t, 0, `{"status":"Failure","reason":"InternalError","message":"Internal error occurred: error sending request: remote error: tls: internal error"}`),
)
require.NoError(t, job.Start(false)(ctx))
assert.Len(t, cluster.requests["exec"], 3)
assert.True(t, pod.job.gzip)
stepEnv := map[string]string{"INPUT_WHO-TO-GREET": "it's\nme", "SECRET": "hunter2", "UID": "5"}
require.NoError(t, job.Exec([]string{"printenv", "SECRET"}, stepEnv, "", "")(ctx))
envArgs, err := os.ReadFile(filepath.Join(workdir, "env-args"))
require.NoError(t, err)
assert.NotContains(t, string(envArgs), "hunter2")
require.NoError(t, job.Exec([]string{"printenv", "INPUT_WHO-TO-GREET"}, stepEnv, "", "")(ctx))
require.NoError(t, job.Exec([]string{"printenv", "UID"}, stepEnv, "", "")(ctx))
require.NoError(t, job.Exec([]string{"pwd", "-P"}, nil, "", workdir)(ctx))
assert.Equal(t, "hunter2\nit's\nme\n5\n"+workdir+"\n", jobLog.String())
assert.Equal(t, ExitCodeError(3), job.Exec([]string{"sh", "-c", "echo failing >&2; exit 3"}, nil, "", "")(ctx))
assert.Contains(t, jobLog.String(), "failing\n")
for _, query := range cluster.requests["exec"] {
assert.NotContains(t, query, "hunter2")
}
lastExec := func() string { return cluster.requests["exec"][len(cluster.requests["exec"])-1] }
require.NoError(t, job.Copy(workdir+"/act/", &FileEntry{Name: "workflow/event.json", Mode: 0o644, Body: `{"ref":"main"}`})(ctx))
assert.NotContains(t, lastExec(), "gzip")
archive, err := job.GetContainerArchive(ctx, workdir+"/act/workflow/event.json")
require.NoError(t, err)
reader := tar.NewReader(archive)
header, err := reader.Next()
require.NoError(t, err)
content, err := io.ReadAll(reader)
require.NoError(t, err)
assert.Equal(t, "event.json", header.Name)
assert.JSONEq(t, `{"ref":"main"}`, string(content))
require.NoError(t, archive.Close())
_, err = job.GetContainerArchive(ctx, workdir+"/missing")
require.Error(t, err)
large := strings.Repeat("a", compressCopyMin)
require.NoError(t, job.Copy(workdir+"/act/", &FileEntry{Name: "workflow/large", Mode: 0o644, Body: large})(ctx))
assert.Contains(t, lastExec(), url.QueryEscape("gzip -dc |"))
content, err = os.ReadFile(workdir + "/act/workflow/large")
require.NoError(t, err)
assert.Equal(t, large, string(content))
actionDir := filepath.Join(t.TempDir(), "action")
require.NoError(t, os.MkdirAll(actionDir, 0o755))
require.NoError(t, os.WriteFile(filepath.Join(actionDir, "index.js"), []byte("main()"), 0o644))
require.NoError(t, job.CopyDir(workdir+"/act/actions/sha/", actionDir+"/", false, false)(ctx))
script, err := os.ReadFile(workdir + "/act/actions/sha/index.js")
require.NoError(t, err)
assert.Equal(t, "main()", string(script))
assert.Contains(t, lastExec(), "command="+url.QueryEscape(workdir+"/act/actions/sha/"))
assert.Contains(t, lastExec(), url.QueryEscape("gzip -dc |"))
require.NoError(t, job.CopyTarStream(ctx, workdir+"/download/new", func(tw *TarWriter) error {
if err := tw.WriteHeader(&tar.Header{Typeflag: tar.TypeReg, Name: "dir/data.txt", Mode: 0o644, Size: 7}); err != nil {
return err
}
_, err := tw.Write([]byte("payload"))
return err
}))
downloaded, err := os.ReadFile(workdir + "/download/new/dir/data.txt")
require.NoError(t, err)
assert.Equal(t, "payload", string(downloaded))
assert.Contains(t, lastExec(), url.QueryEscape("gzip -dc |"))
pathEnv := map[string]string{}
require.NoError(t, job.UpdateFromImageEnv(&pathEnv)(ctx))
assert.Equal(t, path, pathEnv["PATH"])
info, err := service.Inspect(ctx)
require.NoError(t, err)
assert.Equal(t, HealthHealthy, info.Health)
require.NoError(t, service.DumpLogs(ctx))
assert.Equal(t, "log of my-db", serviceLog.String())
require.NoError(t, job.Remove()(ctx))
assert.Len(t, cluster.requests["DELETE /api/v1/namespaces/ci/pods/"+pod.name], 1)
assert.Len(t, cluster.requests["DELETE /api/v1/namespaces/ci/secrets/"+pod.secretName], 1)
require.NoError(t, RemoveOrphanKubernetesResources(ctx, options, time.Now()))
assert.Equal(t, []string{runnerUUIDLabel + "=runner-uuid"}, cluster.requests["list"])
assert.Len(t, cluster.requests["DELETE /api/v1/namespaces/ci/pods/old"], 1)
assert.Len(t, cluster.requests["DELETE /api/v1/namespaces/ci/secrets/old"], 1)
assert.Empty(t, cluster.requests["DELETE /api/v1/namespaces/ci/pods/new"])
assert.Empty(t, cluster.requests["DELETE /api/v1/namespaces/ci/secrets/new"])
}
func TestKubernetesCopiesUncompressedWithoutGzip(t *testing.T) {
t.Parallel()
if runtime.GOOS == "windows" {
t.Skip("uses POSIX shell")
}
ctx := t.Context()
workdir, bin := t.TempDir(), t.TempDir()
for _, tool := range []string{"uname", "tar", "mkdir"} { // all the job container needs but gzip, as on a minimal image
found, err := exec.LookPath(tool)
require.NoError(t, err)
require.NoError(t, os.Symlink(found, filepath.Join(bin, tool)))
}
kubeconfig, cluster := fakeKubernetes(t, `{"spec":{"containers":[{}]},"status":{"phase":"Running","containerStatuses":[
{"name":"job","ready":true,"state":{"running":{}}}]}}`, "PATH="+bin)
pod, err := NewKubernetesPod(KubernetesOptions{Kubeconfig: kubeconfig})
require.NoError(t, err)
job := pod.JobContainer(&NewContainerInput{Image: "node", WorkingDir: workdir})
require.NoError(t, job.Create(nil, nil)(ctx))
require.NoError(t, job.Start(false)(ctx))
assert.False(t, pod.job.gzip)
assert.Equal(t, bin, pod.path)
actionDir := filepath.Join(t.TempDir(), "action")
require.NoError(t, os.MkdirAll(actionDir, 0o755))
require.NoError(t, os.WriteFile(filepath.Join(actionDir, "index.js"), []byte("main()"), 0o644))
require.NoError(t, job.CopyDir(workdir+"/act/actions/sha/", actionDir+"/", false, false)(ctx))
script, err := os.ReadFile(workdir + "/act/actions/sha/index.js")
require.NoError(t, err)
assert.Equal(t, "main()", string(script))
assert.NotContains(t, cluster.requests["exec"][len(cluster.requests["exec"])-1], "gzip")
}
func TestKubernetesPodFailsBeforeSteps(t *testing.T) {
kubeconfig, _ := fakeKubernetes(t, `{"spec":{"containers":[{}]},"status":{"containerStatuses":[
{"name":"job","state":{"waiting":{"reason":"ErrImagePull","message":"no such image"}}}]}}`)
template := map[string]any{"spec": map[string]any{"containers": []any{map[string]any{"name": "sidecar"}}}}
for _, test := range []struct {
services []string
options, err string
}{
{[]string{"db"}, "--hostname db", "only --health-* options are supported"},
{[]string{"sidecar"}, "", "named like another container"},
{[]string{"my_db", "My-DB"}, "", `service My-DB maps to container "my-db"`},
} {
pod, err := NewKubernetesPod(KubernetesOptions{Kubeconfig: kubeconfig, Namespace: "ci", PodTemplates: []map[string]any{template}})
require.NoError(t, err)
job := pod.JobContainer(&NewContainerInput{Image: "node"})
for _, service := range test.services {
pod.ServiceContainer(service, &NewContainerInput{Image: "postgres", WorkflowOptions: test.options})
}
require.ErrorContains(t, job.Create(nil, nil)(t.Context()), test.err)
}
running, cluster := fakeKubernetes(t, `{"spec":{"containers":[{}]},"status":{"containerStatuses":[{"name":"job","state":{"running":{}}}]}}`)
for _, test := range []struct {
failure http.HandlerFunc
err string
}{
{execFailure(t, http.StatusForbidden, `{"message":"pods \"job\" is forbidden"}`), "is forbidden"},
{execFailure(t, 0, `{"status":"Failure","details":{"causes":[{"reason":"ExitCode","message":"126"}]}}`), ExitCodeError(126).Error()},
} {
cluster.failExec(test.failure)
pod, err := NewKubernetesPod(KubernetesOptions{Kubeconfig: running})
require.NoError(t, err)
job := pod.JobContainer(&NewContainerInput{Image: "node"})
require.NoError(t, job.Create(nil, nil)(t.Context()))
require.ErrorContains(t, job.Start(false)(t.Context()), test.err)
}
pod, err := NewKubernetesPod(KubernetesOptions{Kubeconfig: kubeconfig, Namespace: "ci"})
require.NoError(t, err)
job := pod.JobContainer(&NewContainerInput{Image: "missing"})
require.NoError(t, job.Create(nil, nil)(t.Context()))
require.ErrorContains(t, job.Start(false)(t.Context()), "ErrImagePull: no such image")
failed, _ := fakeKubernetes(t, `{"spec":{"containers":[{}]},"status":{"phase":"Failed","initContainerStatuses":[
{"name":"gitea-runner-transfer","state":{"terminated":{"exitCode":1,"message":"exec format error\n"}}}]}}`)
pod, err = NewKubernetesPod(KubernetesOptions{Kubeconfig: failed})
require.NoError(t, err)
job = pod.JobContainer(&NewContainerInput{Image: "node"})
require.NoError(t, job.Create(nil, nil)(t.Context()))
require.ErrorContains(t, job.Start(false)(t.Context()), "container gitea-runner-transfer exited with 1: exec format error")
plugin := filepath.Join(t.TempDir(), "kubeconfig")
require.NoError(t, os.WriteFile(plugin, []byte(`
current-context: eks
contexts: [{name: eks, context: {cluster: eks, user: eks}}]
clusters: [{name: eks, cluster: {server: "https://eks.example"}}]
users: [{name: eks, user: {exec: {command: aws}}}]
`), 0o600))
_, err = NewKubernetesPod(KubernetesOptions{Kubeconfig: plugin})
require.ErrorContains(t, err, "credential plugin")
}