155 lines
3.6 KiB
Go
155 lines
3.6 KiB
Go
// Copyright 2019 The gVisor Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// Binary proctor runs the test for a particular runtime. It is meant to be
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// included in Docker images for all runtime tests.
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package main
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import (
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"flag"
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"fmt"
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"log"
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"os"
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"os/exec"
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"os/signal"
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"path/filepath"
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"regexp"
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"syscall"
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)
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// TestRunner is an interface that must be implemented for each runtime
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// integrated with proctor.
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type TestRunner interface {
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// ListTests returns a string slice of tests available to run.
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ListTests() ([]string, error)
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// TestCmd returns an *exec.Cmd that will run the given test.
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TestCmd(test string) *exec.Cmd
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}
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var (
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runtime = flag.String("runtime", "", "name of runtime")
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list = flag.Bool("list", false, "list all available tests")
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test = flag.String("test", "", "run a single test from the list of available tests")
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pause = flag.Bool("pause", false, "cause container to pause indefinitely, reaping any zombie children")
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)
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func main() {
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flag.Parse()
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if *pause {
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pauseAndReap()
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panic("pauseAndReap should never return")
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}
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if *runtime == "" {
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log.Fatalf("runtime flag must be provided")
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}
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tr, err := testRunnerForRuntime(*runtime)
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if err != nil {
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log.Fatalf("%v", err)
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}
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// List tests.
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if *list {
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tests, err := tr.ListTests()
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if err != nil {
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log.Fatalf("failed to list tests: %v", err)
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}
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for _, test := range tests {
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fmt.Println(test)
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}
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return
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}
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// Run a single test.
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if *test == "" {
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log.Fatalf("test flag must be provided")
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}
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cmd := tr.TestCmd(*test)
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cmd.Stdout, cmd.Stderr = os.Stdout, os.Stderr
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if err := cmd.Run(); err != nil {
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log.Fatalf("FAIL: %v", err)
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}
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}
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// testRunnerForRuntime returns a new TestRunner for the given runtime.
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func testRunnerForRuntime(runtime string) (TestRunner, error) {
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switch runtime {
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case "go":
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return goRunner{}, nil
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case "java":
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return javaRunner{}, nil
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case "nodejs":
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return nodejsRunner{}, nil
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case "php":
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return phpRunner{}, nil
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case "python":
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return pythonRunner{}, nil
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}
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return nil, fmt.Errorf("invalid runtime %q", runtime)
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}
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// pauseAndReap is like init. It runs forever and reaps any children.
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func pauseAndReap() {
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// Get notified of any new children.
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ch := make(chan os.Signal, 1)
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signal.Notify(ch, syscall.SIGCHLD)
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for {
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if _, ok := <-ch; !ok {
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// Channel closed. This should not happen.
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panic("signal channel closed")
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}
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// Reap the child.
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for {
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if cpid, _ := syscall.Wait4(-1, nil, syscall.WNOHANG, nil); cpid < 1 {
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break
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}
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}
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}
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}
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// search is a helper function to find tests in the given directory that match
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// the regex.
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func search(root string, testFilter *regexp.Regexp) ([]string, error) {
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var testSlice []string
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err := filepath.Walk(root, func(path string, info os.FileInfo, err error) error {
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if err != nil {
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return err
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}
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name := filepath.Base(path)
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if info.IsDir() || !testFilter.MatchString(name) {
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return nil
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}
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relPath, err := filepath.Rel(root, path)
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if err != nil {
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return err
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}
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testSlice = append(testSlice, relPath)
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return nil
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})
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if err != nil {
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return nil, fmt.Errorf("walking %q: %v", root, err)
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}
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return testSlice, nil
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}
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