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test.go
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test.go
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// /bin/true; exec /usr/bin/env go run "$0" "$@"
/*
* Copyright 2019 The Vitess Authors.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* http://www.apache.org/licenses/LICENSE-2.0
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
test.go is a "Go script" for running Vitess tests. It runs each test in its own
Docker container for hermeticity and (potentially) parallelism. If a test fails,
this script will save the output in _test/ and continue with other tests.
Before using it, you should have Docker 1.5+ installed, and have your user in
the group that lets you run the docker command without sudo. The first time you
run against a given flavor, it may take some time for the corresponding
bootstrap image (vitess/bootstrap:<flavor>) to be downloaded.
It is meant to be run from the Vitess root, like so:
$ go run test.go [args]
For a list of options, run:
$ go run test.go --help
*/
package main
// This Go script shouldn't rely on any packages that aren't in the standard
// library, since that would require the user to bootstrap before running it.
import (
"bytes"
"encoding/json"
"flag"
"fmt"
"io"
"log"
"net/http"
"net/url"
"os"
"os/exec"
"os/signal"
"path"
"path/filepath"
"sort"
"strconv"
"strings"
"sync"
"syscall"
"time"
)
var usage = `Usage of test.go:
go run test.go [options] [test_name ...] [-- extra-py-test-args]
If one or more test names are provided, run only those tests.
Otherwise, run all tests in test/config.json.
To pass extra args to Python tests (test/*.py), terminate the
list of test names with -- and then add them at the end.
For example:
go run test.go test1 test2 -- --topo-flavor=etcd2
`
// Flags
var (
flavor = flag.String("flavor", "mysql80", "comma-separated bootstrap flavor(s) to run against (when using Docker mode). Available flavors: all,"+flavors)
bootstrapVersion = flag.String("bootstrap-version", "39", "the version identifier to use for the docker images")
runCount = flag.Int("runs", 1, "run each test this many times")
retryMax = flag.Int("retry", 3, "max number of retries, to detect flaky tests")
logPass = flag.Bool("log-pass", false, "log test output even if it passes")
timeout = flag.Duration("timeout", 30*time.Minute, "timeout for each test")
pull = flag.Bool("pull", true, "re-pull the bootstrap image, in case it's been updated")
docker = flag.Bool("docker", true, "run tests with Docker")
useDockerCache = flag.Bool("use_docker_cache", false, "if true, create a temporary Docker image to cache the source code and the binaries generated by 'make build'. Used for execution on Travis CI.")
shard = flag.String("shard", "", "if non-empty, run the tests whose Shard field matches value")
tag = flag.String("tag", "", "if provided, only run tests with the given tag. Can't be combined with -shard or explicit test list")
exclude = flag.String("exclude", "", "if provided, exclude tests containing any of the given tags (comma delimited)")
keepData = flag.Bool("keep-data", false, "don't delete the per-test VTDATAROOT subfolders")
printLog = flag.Bool("print-log", false, "print the log of each failed test (or all tests if -log-pass) to the console")
follow = flag.Bool("follow", false, "print test output as it runs, instead of waiting to see if it passes or fails")
parallel = flag.Int("parallel", 1, "number of tests to run in parallel")
skipBuild = flag.Bool("skip-build", false, "skip running 'make build'. Assumes pre-existing binaries exist")
partialKeyspace = flag.Bool("partial-keyspace", false, "add a second keyspace for sharded tests and mark first shard as moved to this keyspace in the shard routing rules")
// `go run test.go --dry-run --skip-build` to quickly test this file and see what tests will run
dryRun = flag.Bool("dry-run", false, "For each test to be run, it will output the test attributes, but NOT run the tests. Useful while debugging changes to test.go (this file)")
remoteStats = flag.String("remote-stats", "", "url to send remote stats")
buildVTAdmin = flag.Bool("build-vtadmin", false, "Enable or disable VTAdmin build during 'make build'")
buildTag = flag.String("build-tag", "", "Build tag to create a custom debug build")
)
var (
vtDataRoot = os.Getenv("VTDATAROOT")
extraArgs []string
)
const (
statsFileName = "test/stats.json"
configFileName = "test/config.json"
// List of flavors for which a bootstrap Docker image is available.
flavors = "mysql80,percona80"
)
// Config is the overall object serialized in test/config.json.
type Config struct {
Tests map[string]*Test
}
// Test is an entry from the test/config.json file.
type Test struct {
File string
Args, Command []string
// Manual means it won't be run unless explicitly specified.
Manual bool
// Shard is used to split tests among workers.
Shard string
// RetryMax is the maximum number of times a test will be retried.
// If 0, flag *retryMax is used.
RetryMax int
// Tags is a list of tags that can be used to filter tests.
Tags []string
name string
flavor string
bootstrapVersion string
runIndex int
pass, fail int
}
func (t *Test) hasTag(want string) bool {
for _, got := range t.Tags {
if got == want {
return true
}
}
return false
}
func (t *Test) hasAnyTag(want []string) bool {
for _, tag := range want {
if t.hasTag(tag) {
return true
}
}
return false
}
// run executes a single try.
// dir is the location of the vitess repo to use.
// dataDir is the VTDATAROOT to use for this run.
// returns the combined stdout+stderr and error.
func (t *Test) run(dir, dataDir string) ([]byte, error) {
if *dryRun {
fmt.Printf("Will run in dir %s(%s): %+v\n", dir, dataDir, t)
t.pass++
return nil, nil
}
testCmd := t.Command
if len(testCmd) == 0 {
if strings.Contains(fmt.Sprintf("%v", t.File), ".go") {
testCmd = []string{"tools/e2e_go_test.sh"}
testCmd = append(testCmd, t.Args...)
if *keepData {
testCmd = append(testCmd, "-keep-data")
}
} else {
testCmd = []string{"test/" + t.File, "-v", "--skip-build", "--keep-logs"}
testCmd = append(testCmd, t.Args...)
}
if *partialKeyspace {
testCmd = append(testCmd, "--partial-keyspace")
}
testCmd = append(testCmd, extraArgs...)
}
var cmd *exec.Cmd
if *docker {
var args []string
testArgs := strings.Join(testCmd, " ")
if *useDockerCache {
args = []string{"--use_docker_cache", cacheImage(t.flavor), t.flavor, testArgs}
} else {
// If there is no cache, we have to call 'make build' before each test.
args = []string{t.flavor, t.bootstrapVersion, "make build && " + testArgs}
if !*buildVTAdmin {
args[len(args)-1] = "NOVTADMINBUILD=1 " + args[len(args)-1]
}
}
cmd = exec.Command(path.Join(dir, "docker/test/run.sh"), args...)
} else {
cmd = exec.Command(testCmd[0], testCmd[1:]...)
}
cmd.Dir = dir
// Put everything in a unique dir, so we can copy and/or safely delete it.
// Also try to make them use different port ranges
// to mitigate failures due to zombie processes.
cmd.Env = updateEnv(os.Environ(), map[string]string{
"VTROOT": "/vt/src/vitess.io/vitess",
"VTDATAROOT": dataDir,
"VTPORTSTART": strconv.FormatInt(int64(getPortStart(100)), 10),
})
// Capture test output.
buf := &bytes.Buffer{}
cmd.Stdout = buf
if *follow {
cmd.Stdout = io.MultiWriter(cmd.Stdout, os.Stdout)
}
cmd.Stderr = cmd.Stdout
// Run the test.
done := make(chan error, 1)
go func() {
done <- cmd.Run()
}()
// Wait for it to finish.
var runErr error
timer := time.NewTimer(*timeout)
defer timer.Stop()
select {
case runErr = <-done:
if runErr == nil {
t.pass++
} else {
t.fail++
}
case <-timer.C:
t.logf("timeout exceeded")
cmd.Process.Signal(syscall.SIGINT)
t.fail++
runErr = <-done
}
return buf.Bytes(), runErr
}
func (t *Test) logf(format string, v ...any) {
if *runCount > 1 {
log.Printf("%v.%v[%v/%v]: %v", t.flavor, t.name, t.runIndex+1, *runCount, fmt.Sprintf(format, v...))
} else {
log.Printf("%v.%v: %v", t.flavor, t.name, fmt.Sprintf(format, v...))
}
}
func loadOneConfig(fileName string) (*Config, error) {
config2 := &Config{}
configData, err := os.ReadFile(fileName)
if err != nil {
log.Fatalf("Can't read config file %s: %v", fileName, err)
return nil, err
}
if err := json.Unmarshal(configData, config2); err != nil {
log.Fatalf("Can't parse config file: %v", err)
return nil, err
}
return config2, nil
}
// Get test configs.
func loadConfig() (*Config, error) {
config := &Config{Tests: make(map[string]*Test)}
matches, _ := filepath.Glob("test/config*.json")
for _, configFile := range matches {
config2, err := loadOneConfig(configFile)
if err != nil {
return nil, err
}
if config2 == nil {
log.Fatalf("could not load config file: %s", configFile)
}
for key, val := range config2.Tests {
config.Tests[key] = val
}
}
return config, nil
}
func main() {
flag.Usage = func() {
os.Stderr.WriteString(usage)
os.Stderr.WriteString("\nOptions:\n")
flag.PrintDefaults()
}
flag.Parse()
// Sanity checks.
if *docker {
if *flavor == "all" {
*flavor = flavors
}
if *flavor == "" {
log.Fatalf("Must provide at least one -flavor when using -docker mode. Available flavors: all,%v", flavors)
}
}
if *parallel < 1 {
log.Fatalf("Invalid -parallel value: %v", *parallel)
}
if *parallel > 1 && !*docker {
log.Fatalf("Can't use -parallel value > 1 when -docker=false")
}
if *useDockerCache && !*docker {
log.Fatalf("Can't use -use_docker_cache when -docker=false")
}
startTime := time.Now()
// Make output directory.
outDir := path.Join("_test", fmt.Sprintf("%v.%v", startTime.Format("20060102-150405"), os.Getpid()))
if err := os.MkdirAll(outDir, os.FileMode(0755)); err != nil {
log.Fatalf("Can't create output directory: %v", err)
}
logFile, err := os.OpenFile(path.Join(outDir, "test.log"), os.O_RDWR|os.O_CREATE, 0644)
if err != nil {
log.Fatalf("Can't create log file: %v", err)
}
log.SetOutput(io.MultiWriter(os.Stderr, logFile))
log.Printf("Output directory: %v", outDir)
var config *Config
if config, err = loadConfig(); err != nil {
log.Fatalf("Could not load test config: %+v", err)
}
flavors := []string{"local"}
if *docker && !*dryRun {
log.Printf("Bootstrap flavor(s): %v", *flavor)
flavors = strings.Split(*flavor, ",")
// Re-pull image(s).
if *pull {
var wg sync.WaitGroup
for _, flavor := range flavors {
wg.Add(1)
go func(flavor string) {
defer wg.Done()
image := "vitess/bootstrap:" + *bootstrapVersion + "-" + flavor
pullTime := time.Now()
log.Printf("Pulling %v...", image)
cmd := exec.Command("docker", "pull", image)
if out, err := cmd.CombinedOutput(); err != nil {
log.Fatalf("Can't pull image %v: %v\n%s", image, err, out)
}
log.Printf("Image %v pulled in %v", image, round(time.Since(pullTime)))
}(flavor)
}
wg.Wait()
}
} else {
if vtDataRoot == "" {
log.Fatalf("VTDATAROOT env var must be set in -docker=false mode. Make sure to source dev.env.")
}
}
// Pick the tests to run.
var testArgs []string
testArgs, extraArgs = splitArgs(flag.Args(), "--")
tests := selectedTests(testArgs, config)
// Duplicate tests for run count.
if *runCount > 1 {
var dup []*Test
for _, t := range tests {
for i := 0; i < *runCount; i++ {
// Make a copy, since they're pointers.
test := *t
test.runIndex = i
dup = append(dup, &test)
}
}
tests = dup
}
// Duplicate tests for flavors.
var dup []*Test
for _, flavor := range flavors {
for _, t := range tests {
test := *t
test.flavor = flavor
test.bootstrapVersion = *bootstrapVersion
dup = append(dup, &test)
}
}
tests = dup
vtRoot := "."
tmpDir := ""
if *docker && !*dryRun {
// Copy working repo to tmpDir.
// This doesn't work outside Docker since it messes up GOROOT.
tmpDir, err = os.MkdirTemp(os.TempDir(), "vt_")
if err != nil {
log.Fatalf("Can't create temp dir in %v", os.TempDir())
}
log.Printf("Copying working repo to temp dir %v", tmpDir)
if out, err := exec.Command("cp", "-R", ".", tmpDir).CombinedOutput(); err != nil {
log.Fatalf("Can't copy working repo to temp dir %v: %v: %s", tmpDir, err, out)
}
// The temp copy needs permissive access so the Docker user can read it.
if out, err := exec.Command("chmod", "-R", "go=u", tmpDir).CombinedOutput(); err != nil {
log.Printf("Can't set permissions on temp dir %v: %v: %s", tmpDir, err, out)
}
vtRoot = tmpDir
} else if *skipBuild {
log.Printf("Skipping build...")
} else {
// Since we're sharing the working dir, do the build once for all tests.
log.Printf("Running make build...")
command := exec.Command("make", "build")
if !*buildVTAdmin {
command.Env = append(os.Environ(), "NOVTADMINBUILD=1")
}
if *buildTag != "" {
command.Env = append(command.Env, fmt.Sprintf(`EXTRA_BUILD_TAGS=%s`, *buildTag))
}
if out, err := command.CombinedOutput(); err != nil {
log.Fatalf("make build failed; exit code: %d, error: %v\n%s",
command.ProcessState.ExitCode(), err, out)
}
}
if *useDockerCache {
for _, flavor := range flavors {
start := time.Now()
log.Printf("Creating Docker cache image for flavor '%s'...", flavor)
if out, err := exec.Command("docker/test/run.sh", "--create_docker_cache", cacheImage(flavor), flavor, *bootstrapVersion, "make build").CombinedOutput(); err != nil {
log.Fatalf("Failed to create Docker cache image for flavor '%s': %v\n%s", flavor, err, out)
}
log.Printf("Creating Docker cache image took %v", round(time.Since(start)))
}
}
// Keep stats for the overall run.
var mu sync.Mutex
failed := 0
passed := 0
flaky := 0
// Listen for signals.
sigchan := make(chan os.Signal, 1)
signal.Notify(sigchan, syscall.SIGINT)
// Run tests.
stop := make(chan struct{}) // Close this to tell the runners to stop.
done := make(chan struct{}) // This gets closed when all runners have stopped.
next := make(chan *Test) // The next test to run.
var wg sync.WaitGroup
// Send all tests into the channel.
go func() {
for _, test := range tests {
next <- test
}
close(next)
}()
// Start the requested number of parallel runners.
for i := 0; i < *parallel; i++ {
wg.Add(1)
go func() {
defer wg.Done()
for test := range next {
tryMax := *retryMax
if test.RetryMax != 0 {
tryMax = test.RetryMax
}
for try := 1; ; try++ {
select {
case <-stop:
test.logf("cancelled")
return
default:
}
if try > tryMax {
// Every try failed.
test.logf("retry limit exceeded")
mu.Lock()
failed++
mu.Unlock()
break
}
test.logf("running (try %v/%v)...", try, tryMax)
// Make a unique VTDATAROOT.
dataDir, err := os.MkdirTemp(vtDataRoot, "vt_")
if err != nil {
test.logf("Failed to create temporary subdir in VTDATAROOT: %v", vtDataRoot)
mu.Lock()
failed++
mu.Unlock()
break
}
// Run the test.
start := time.Now()
output, err := test.run(vtRoot, dataDir)
duration := time.Since(start)
// Save/print test output.
if err != nil || *logPass {
if *printLog && !*follow {
test.logf("%s\n", output)
}
outFile := fmt.Sprintf("%v.%v-%v.%v.log", test.flavor, test.name, test.runIndex+1, try)
outFilePath := path.Join(outDir, outFile)
test.logf("saving test output to %v", outFilePath)
if fileErr := os.WriteFile(outFilePath, output, os.FileMode(0644)); fileErr != nil {
test.logf("WriteFile error: %v", fileErr)
}
}
// Clean up the unique VTDATAROOT.
if !*keepData {
if err := os.RemoveAll(dataDir); err != nil {
test.logf("WARNING: can't remove temporary VTDATAROOT: %v", err)
}
}
if err != nil {
// This try failed.
test.logf("FAILED (try %v/%v) in %v: %v", try, tryMax, round(duration), err)
mu.Lock()
testFailed(test.name)
mu.Unlock()
continue
}
mu.Lock()
testPassed(test.name, duration)
if try == 1 {
// Passed on the first try.
test.logf("PASSED in %v", round(duration))
passed++
} else {
// Passed, but not on the first try.
test.logf("FLAKY (1/%v passed in %v)", try, round(duration))
flaky++
testFlaked(test.name, try)
}
mu.Unlock()
break
}
}
}()
}
// Close the done channel when all the runners stop.
// This lets us select on wg.Wait().
go func() {
wg.Wait()
close(done)
}()
// Stop the loop and kill child processes if we get a signal.
select {
case <-sigchan:
log.Printf("interrupted: skip remaining tests and wait for current test to tear down")
signal.Stop(sigchan)
// Stop the test loop and wait for it to exit.
// Running tests already get the SIGINT themselves.
// We mustn't send it again, or it'll abort the teardown process too early.
close(stop)
<-done
case <-done:
}
// Clean up temp dir.
if tmpDir != "" {
log.Printf("Removing temp dir %v", tmpDir)
if err := os.RemoveAll(tmpDir); err != nil {
log.Printf("Failed to remove temp dir: %v", err)
}
}
// Remove temporary Docker cache image.
if *useDockerCache {
for _, flavor := range flavors {
log.Printf("Removing temporary Docker cache image for flavor '%s'", flavor)
if out, err := exec.Command("docker", "rmi", cacheImage(flavor)).CombinedOutput(); err != nil {
log.Printf("WARNING: Failed to delete Docker cache image: %v\n%s", err, out)
}
}
}
// Print summary.
log.Print(strings.Repeat("=", 60))
for _, t := range tests {
tname := t.flavor + "." + t.name
switch {
case t.pass > 0 && t.fail == 0:
log.Printf("%-40s\tPASS", tname)
case t.pass > 0 && t.fail > 0:
log.Printf("%-40s\tFLAKY (%v/%v failed)", tname, t.fail, t.pass+t.fail)
case t.pass == 0 && t.fail > 0:
log.Printf("%-40s\tFAIL (%v tries)", tname, t.fail)
case t.pass == 0 && t.fail == 0:
log.Printf("%-40s\tSKIPPED", tname)
}
}
log.Print(strings.Repeat("=", 60))
skipped := len(tests) - passed - flaky - failed
log.Printf("%v PASSED, %v FLAKY, %v FAILED, %v SKIPPED", passed, flaky, failed, skipped)
log.Printf("Total time: %v", round(time.Since(startTime)))
if failed > 0 || skipped > 0 {
os.Exit(1)
}
}
func updateEnv(orig []string, updates map[string]string) []string {
var env []string
for _, v := range orig {
parts := strings.SplitN(v, "=", 2)
if _, ok := updates[parts[0]]; !ok {
env = append(env, v)
}
}
for k, v := range updates {
env = append(env, k+"="+v)
}
return env
}
// cacheImage returns the flavor-specific name of the Docker cache image.
func cacheImage(flavor string) string {
return fmt.Sprintf("vitess/bootstrap:rm_%s_test_cache_do_NOT_push", flavor)
}
type Stats struct {
TestStats map[string]TestStats
}
type TestStats struct {
Pass, Fail, Flake int
PassTime time.Duration
name string
}
func sendStats(values url.Values) {
if *remoteStats != "" {
log.Printf("Sending remote stats to %v", *remoteStats)
resp, err := http.PostForm(*remoteStats, values)
if err != nil {
log.Printf("Can't send remote stats: %v", err)
}
defer resp.Body.Close()
}
}
func testPassed(name string, passTime time.Duration) {
sendStats(url.Values{
"test": {name},
"result": {"pass"},
"duration": {passTime.String()},
})
updateTestStats(name, func(ts *TestStats) {
totalTime := int64(ts.PassTime)*int64(ts.Pass) + int64(passTime)
ts.Pass++
ts.PassTime = time.Duration(totalTime / int64(ts.Pass))
})
}
func testFailed(name string) {
sendStats(url.Values{
"test": {name},
"result": {"fail"},
})
updateTestStats(name, func(ts *TestStats) {
ts.Fail++
})
}
func testFlaked(name string, try int) {
sendStats(url.Values{
"test": {name},
"result": {"flake"},
"try": {strconv.FormatInt(int64(try), 10)},
})
updateTestStats(name, func(ts *TestStats) {
ts.Flake += try - 1
})
}
func updateTestStats(name string, update func(*TestStats)) {
var stats Stats
data, err := os.ReadFile(statsFileName)
if err != nil {
log.Print("Can't read stats file, starting new one.")
} else {
if err := json.Unmarshal(data, &stats); err != nil {
log.Printf("Can't parse stats file: %v", err)
return
}
}
if stats.TestStats == nil {
stats.TestStats = make(map[string]TestStats)
}
ts := stats.TestStats[name]
update(&ts)
stats.TestStats[name] = ts
data, err = json.MarshalIndent(stats, "", "\t")
if err != nil {
log.Printf("Can't encode stats file: %v", err)
return
}
if err := os.WriteFile(statsFileName, data, 0644); err != nil {
log.Printf("Can't write stats file: %v", err)
}
}
type ByPassTime []TestStats
func (a ByPassTime) Len() int { return len(a) }
func (a ByPassTime) Swap(i, j int) { a[i], a[j] = a[j], a[i] }
func (a ByPassTime) Less(i, j int) bool { return a[i].PassTime > a[j].PassTime }
func getTestsSorted(names []string, testMap map[string]*Test) []*Test {
sort.Strings(names)
var tests []*Test
for _, name := range names {
t := testMap[name]
t.name = name
tests = append(tests, t)
}
return tests
}
func selectedTests(args []string, config *Config) []*Test {
var tests []*Test
excludedTests := strings.Split(*exclude, ",")
if *shard != "" {
// Run the tests in a given shard.
// This can be combined with positional args.
var names []string
for name, t := range config.Tests {
if t.Shard == *shard && !t.Manual && (*exclude == "" || !t.hasAnyTag(excludedTests)) {
t.name = name
names = append(names, name)
}
}
tests = getTestsSorted(names, config.Tests)
}
if len(args) > 0 {
// Positional args for manual selection.
for _, name := range args {
t, ok := config.Tests[name]
if !ok {
tests := make([]string, len(config.Tests))
i := 0
for k := range config.Tests {
tests[i] = k
i++
}
sort.Strings(tests)
log.Fatalf("Unknown test: %v\nAvailable tests are: %v", name, strings.Join(tests, ", "))
}
t.name = name
tests = append(tests, t)
}
}
if len(args) == 0 && *shard == "" {
// Run all tests.
var names []string
for name, t := range config.Tests {
if !t.Manual && (*tag == "" || t.hasTag(*tag)) && (*exclude == "" || !t.hasAnyTag(excludedTests)) {
names = append(names, name)
}
}
tests = getTestsSorted(names, config.Tests)
}
return tests
}
var (
port = 16000
portMutex sync.Mutex
)
func getPortStart(size int) int {
portMutex.Lock()
defer portMutex.Unlock()
start := port
port += size
return start
}
// splitArgs splits a list of args at the first appearance of tok.
func splitArgs(all []string, tok string) (args, extraArgs []string) {
extra := false
for _, arg := range all {
if extra {
extraArgs = append(extraArgs, arg)
continue
}
if arg == tok {
extra = true
continue
}
args = append(args, arg)
}
return
}
func round(d time.Duration) time.Duration {
return d.Round(100 * time.Millisecond)
}