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harness.go
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harness.go
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// Copyright 2015 CoreOS, Inc.
//
// 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.
package kola
import (
"bufio"
"encoding/json"
"fmt"
"hash/fnv"
"io"
"os"
"path/filepath"
"regexp"
"strconv"
"strings"
"sync"
"time"
"github.com/coreos/pkg/capnslog"
"github.com/kballard/go-shellquote"
"github.com/pkg/errors"
"gopkg.in/yaml.v2"
"github.com/coreos/coreos-assembler/mantle/harness"
"github.com/coreos/coreos-assembler/mantle/harness/reporters"
"github.com/coreos/coreos-assembler/mantle/kola/cluster"
"github.com/coreos/coreos-assembler/mantle/kola/register"
"github.com/coreos/coreos-assembler/mantle/network"
"github.com/coreos/coreos-assembler/mantle/platform"
awsapi "github.com/coreos/coreos-assembler/mantle/platform/api/aws"
azureapi "github.com/coreos/coreos-assembler/mantle/platform/api/azure"
doapi "github.com/coreos/coreos-assembler/mantle/platform/api/do"
esxapi "github.com/coreos/coreos-assembler/mantle/platform/api/esx"
gcloudapi "github.com/coreos/coreos-assembler/mantle/platform/api/gcloud"
openstackapi "github.com/coreos/coreos-assembler/mantle/platform/api/openstack"
packetapi "github.com/coreos/coreos-assembler/mantle/platform/api/packet"
"github.com/coreos/coreos-assembler/mantle/platform/conf"
"github.com/coreos/coreos-assembler/mantle/platform/machine/aws"
"github.com/coreos/coreos-assembler/mantle/platform/machine/azure"
"github.com/coreos/coreos-assembler/mantle/platform/machine/do"
"github.com/coreos/coreos-assembler/mantle/platform/machine/esx"
"github.com/coreos/coreos-assembler/mantle/platform/machine/gcloud"
"github.com/coreos/coreos-assembler/mantle/platform/machine/openstack"
"github.com/coreos/coreos-assembler/mantle/platform/machine/packet"
"github.com/coreos/coreos-assembler/mantle/platform/machine/qemu"
"github.com/coreos/coreos-assembler/mantle/platform/machine/qemuiso"
"github.com/coreos/coreos-assembler/mantle/system"
"github.com/coreos/coreos-assembler/mantle/util"
)
// InstalledTestsDir is a directory where "installed" external
// can be placed; for example, a project like ostree can install
// tests at /usr/lib/coreos-assembler/tests/kola/ostree/...
// and this will be automatically picked up.
const InstalledTestsDir = "/usr/lib/coreos-assembler/tests/kola"
// InstalledTestMetaPrefix is the prefix for JSON-formatted metadata
const InstalledTestMetaPrefix = "# kola:"
// InstalledTestMetaPrefixYaml is the prefix for YAML-formatted metadata
const InstalledTestMetaPrefixYaml = "## kola:"
// InstalledTestDefaultTest is a special name; see the README-kola-ext.md
// for more information.
const InstalledTestDefaultTest = "test.sh"
// This is the same string from https://salsa.debian.org/ci-team/autopkgtest/raw/master/doc/README.package-tests.rst
// Specifying this in the tags list is required to denote a need for Internet access
const NeedsInternetTag = "needs-internet"
// PlatformIndependentTag is currently equivalent to platform: qemu, but that may change in the future.
// For more, see the doc in external-tests.md.
const PlatformIndependentTag = "platform-independent"
// The string for the tag that indicates a test has been marked as allowing rerun success.
// In some cases the internal test framework will add this tag to a test to indicate if
// the test passes a rerun to allow the run to succeed.
const AllowRerunSuccessTag = "allow-rerun-success"
// defaultPlatformIndependentPlatform is the platform where we run tests that claim platform independence
const defaultPlatformIndependentPlatform = "qemu"
// Don't e.g. check console for kernel errors, SELinux AVCs, etc.
const SkipBaseChecksTag = "skip-base-checks"
// Date format for snooze date specified in kola-denylist.yaml (YYYY-MM-DD)
const snoozeFormat = "2006-01-02"
// SkipConsoleWarningsTag will cause kola not to check console for kernel errors.
// This overlaps with SkipBaseChecksTag above, but is really a special flag for kola-denylist.yaml.
const SkipConsoleWarningsTag = "skip-console-warnings"
var (
plog = capnslog.NewPackageLogger("github.com/coreos/coreos-assembler/mantle", "kola")
Options = platform.Options{}
AWSOptions = awsapi.Options{Options: &Options} // glue to set platform options from main
AzureOptions = azureapi.Options{Options: &Options} // glue to set platform options from main
DOOptions = doapi.Options{Options: &Options} // glue to set platform options from main
ESXOptions = esxapi.Options{Options: &Options} // glue to set platform options from main
GCPOptions = gcloudapi.Options{Options: &Options} // glue to set platform options from main
OpenStackOptions = openstackapi.Options{Options: &Options} // glue to set platform options from main
PacketOptions = packetapi.Options{Options: &Options} // glue to set platform options from main
QEMUOptions = qemu.Options{Options: &Options} // glue to set platform options from main
QEMUIsoOptions = qemuiso.Options{Options: &Options} // glue to set platform options from main
CosaBuild *util.LocalBuild // this is a parsed cosa build
TestParallelism int //glue var to set test parallelism from main
TAPFile string // if not "", write TAP results here
NoNet bool // Disable tests requiring Internet
// ForceRunPlatformIndependent will cause tests that claim platform-independence to run
ForceRunPlatformIndependent bool
// SkipConsoleWarnings is set via SkipConsoleWarningsTag in kola-denylist.yaml
SkipConsoleWarnings bool
DenylistedTests []string // tests which are on the denylist
WarnOnErrorTests []string // denylisted tests we are going to run and warn in case of error
Tags []string // tags to be ran
// Sharding is a string of the form: hash:m/n where m and n are integers to run only tests which hash to m.
Sharding string
extTestNum = 1 // Assigns a unique number to each non-exclusive external test
testResults protectedTestResults
nonexclusivePrefixMatch = regexp.MustCompile(`^non-exclusive-test-bucket-[0-9]/`)
nonexclusiveWrapperMatch = regexp.MustCompile(`^non-exclusive-test-bucket-[0-9]$`)
consoleChecks = []struct {
desc string
match *regexp.Regexp
warnOnly bool
allowRerunSuccess bool
skipFlag *register.Flag
}{
{
desc: "emergency shell",
match: regexp.MustCompile("Press Enter for emergency shell|Starting Emergency Shell|You are in emergency mode"),
warnOnly: false,
allowRerunSuccess: false,
skipFlag: &[]register.Flag{register.NoEmergencyShellCheck}[0],
},
{
desc: "dracut fatal",
match: regexp.MustCompile("dracut: Refusing to continue"),
},
{
desc: "kernel panic",
match: regexp.MustCompile("Kernel panic - not syncing: (.*)"),
},
{
desc: "kernel oops",
match: regexp.MustCompile("Oops:"),
},
{
// For this one we see it sometimes when I/O is really slow, which is often
// more of an indication of a problem with resources in our pipeline rather
// than a problem with the software we are testing. We'll mark it as warnOnly
// so it's non-fatal and also allow for a rerun of a test that goes on to
// fail that had this problem to ultimately result in success.
desc: "kernel soft lockup",
match: regexp.MustCompile("watchdog: BUG: soft lockup - CPU"),
warnOnly: true,
allowRerunSuccess: true,
},
{
desc: "kernel warning",
match: regexp.MustCompile(`WARNING: CPU: \d+ PID: \d+ at (.+)`),
},
{
desc: "failure of disk under I/O",
match: regexp.MustCompile("rejecting I/O to offline device"),
},
{
// https://github.com/coreos/bugs/issues/2065
desc: "excessive bonding link status messages",
match: regexp.MustCompile("(?s:link status up for interface [^,]+, enabling it in [0-9]+ ms.*?){10}"),
},
{
// https://github.com/coreos/bugs/issues/2180
desc: "ext4 delayed allocation failure",
match: regexp.MustCompile(`EXT4-fs \([^)]+\): Delayed block allocation failed for inode \d+ at logical offset \d+ with max blocks \d+ with (error \d+)`),
},
{
// https://github.com/coreos/bugs/issues/2284
desc: "GRUB memory corruption",
match: regexp.MustCompile("((alloc|free) magic) (is )?broken"),
},
{
// https://github.com/coreos/bugs/issues/2435
desc: "Ignition fetch cancellation race",
match: regexp.MustCompile(`ignition\[[0-9]+\]: failed to fetch config: context canceled`),
},
{
// https://github.com/coreos/bugs/issues/2526
desc: "initrd-cleanup.service terminated",
match: regexp.MustCompile(`initrd-cleanup\.service: Main process exited, code=killed, status=15/TERM`),
},
{
desc: "Go panic",
match: regexp.MustCompile("panic: (.*)"),
},
{
desc: "segfault",
match: regexp.MustCompile("SIGSEGV|=11/SEGV"),
},
{
desc: "core dump",
match: regexp.MustCompile("[Cc]ore dump"),
},
{
desc: "systemd ordering cycle",
match: regexp.MustCompile("Ordering cycle found"),
},
{
desc: "oom killer",
match: regexp.MustCompile("invoked oom-killer"),
},
{
// https://github.com/coreos/fedora-coreos-config/pull/1797
desc: "systemd generator failure",
match: regexp.MustCompile(`(/.*/system-generators/.*) (failed with exit status|terminated by signal|failed due to unknown reason)`),
},
}
ErrWarnOnTestFail = errors.New("A test marked as warn:true failed.")
)
const (
// kolaExtBinDataDir is where data will be stored on the target (but use the environment variable)
kolaExtBinDataDir = "/var/opt/kola/extdata"
// kolaExtBinDataEnv is an environment variable pointing to the above
kolaExtBinDataEnv = "KOLA_EXT_DATA"
// kolaExtContainerDataEnv includes the path to the ostree base container image in oci-archive format.
kolaExtContainerDataEnv = "KOLA_EXT_OSTREE_OCIARCHIVE"
// kolaExtBinDataName is the name for test dependency data
kolaExtBinDataName = "data"
)
// KoletResult is serialized JSON passed from kolet to the harness
type KoletResult struct {
Reboot string
}
const KoletExtTestUnit = "kola-runext"
const KoletRebootAckFifo = "/run/kolet-reboot-ack"
// Records failed tests for reruns
type protectedTestResults struct {
results []*harness.H
mu sync.RWMutex
}
func (p *protectedTestResults) add(h *harness.H) {
p.mu.Lock()
p.results = append(p.results, h)
p.mu.Unlock()
}
func (p *protectedTestResults) getResults() []*harness.H {
p.mu.RLock()
temp := p.results
p.mu.RUnlock()
return temp
}
// NativeRunner is a closure passed to all kola test functions and used
// to run native go functions directly on kola machines. It is necessary
// glue until kola does introspection.
type NativeRunner func(funcName string, m platform.Machine) error
func NewFlight(pltfrm string) (flight platform.Flight, err error) {
switch pltfrm {
case "aws":
flight, err = aws.NewFlight(&AWSOptions)
case "azure":
flight, err = azure.NewFlight(&AzureOptions)
case "do":
flight, err = do.NewFlight(&DOOptions)
case "esx":
flight, err = esx.NewFlight(&ESXOptions)
case "gcp":
flight, err = gcloud.NewFlight(&GCPOptions)
case "openstack":
flight, err = openstack.NewFlight(&OpenStackOptions)
case "packet":
flight, err = packet.NewFlight(&PacketOptions)
case "qemu":
flight, err = qemu.NewFlight(&QEMUOptions)
case "qemu-iso":
flight, err = qemuiso.NewFlight(&QEMUIsoOptions)
default:
err = fmt.Errorf("invalid platform %q", pltfrm)
}
return
}
// MatchesPatterns returns true if `s` matches one of the patterns in `patterns`.
func MatchesPatterns(s string, patterns []string) (bool, error) {
for _, pattern := range patterns {
match, err := filepath.Match(pattern, s)
if err != nil {
return false, err
}
if match {
return true, nil
}
}
return false, nil
}
// HasString returns true if `s` equals one of the strings in `slice`.
func HasString(s string, slice []string) bool {
for _, e := range slice {
if e == s {
return true
}
}
return false
}
func testSkipBaseChecks(test *register.Test) bool {
return HasString(SkipBaseChecksTag, test.Tags)
}
func testRequiresInternet(test *register.Test) bool {
return HasString(NeedsInternetTag, test.Tags)
}
func markTestForRerunSuccess(test *register.Test, msg string) {
if !HasString(AllowRerunSuccessTag, test.Tags) {
plog.Warningf("%s Adding as candidate for rerun success: %s", msg, test.Name)
test.Tags = append(test.Tags, AllowRerunSuccessTag)
}
}
type DenyListObj struct {
Pattern string `yaml:"pattern"`
Tracker string `yaml:"tracker"`
Streams []string `yaml:"streams"`
Arches []string `yaml:"arches"`
Platforms []string `yaml:"platforms"`
SnoozeDate string `yaml:"snooze"`
OsVersion []string `yaml:"osversion"`
Warn bool `yaml:"warn"`
}
type ManifestData struct {
Variables struct {
Stream string `yaml:"stream"`
OsVersion string `yaml:"osversion"`
} `yaml:"variables"`
}
type InitConfigData struct {
ConfigVariant string `json:"coreos-assembler.config-variant"`
}
func ParseDenyListYaml(pltfrm string) error {
var objs []DenyListObj
// Parse kola-denylist into structs
pathToDenyList := filepath.Join(Options.CosaWorkdir, "src/config/kola-denylist.yaml")
denyListFile, err := os.ReadFile(pathToDenyList)
if os.IsNotExist(err) {
return nil
} else if err != nil {
return err
}
plog.Debug("Found kola-denylist.yaml. Processing listed denials.")
err = yaml.Unmarshal(denyListFile, &objs)
if err != nil {
return err
}
plog.Debug("Parsed kola-denylist.yaml")
// Look for the right manifest, taking into account the variant
var manifest ManifestData
var pathToManifest string
pathToInitConfig := filepath.Join(Options.CosaWorkdir, "src/config.json")
initConfigFile, err := os.ReadFile(pathToInitConfig)
if os.IsNotExist(err) {
// No variant config found. Let's read the default manifest
pathToManifest = filepath.Join(Options.CosaWorkdir, "src/config/manifest.yaml")
} else if err != nil {
// Unexpected error
return err
} else {
// Figure out the variant and read the corresponding manifests
var initConfig InitConfigData
err = json.Unmarshal(initConfigFile, &initConfig)
if err != nil {
return err
}
pathToManifest = filepath.Join(Options.CosaWorkdir, fmt.Sprintf("src/config/manifest-%s.yaml", initConfig.ConfigVariant))
}
manifestFile, err := os.ReadFile(pathToManifest)
if err != nil {
return err
}
err = yaml.Unmarshal(manifestFile, &manifest)
if err != nil {
return err
}
// Get the stream and osversion variables from the manifest
stream := manifest.Variables.Stream
osversion := manifest.Variables.OsVersion
// Get the current arch & current time
arch := Options.CosaBuildArch
today := time.Now()
plog.Debugf("Denylist: Skipping tests for stream: '%s', osversion: '%s', arch: '%s'\n", stream, osversion, arch)
// Accumulate patterns filtering by set policies
plog.Debug("Processing denial patterns from yaml...")
for _, obj := range objs {
if len(obj.Arches) > 0 && !HasString(arch, obj.Arches) {
continue
}
if len(obj.Platforms) > 0 && !HasString(pltfrm, obj.Platforms) {
continue
}
if len(stream) > 0 && len(obj.Streams) > 0 && !HasString(stream, obj.Streams) {
continue
}
if len(osversion) > 0 && len(obj.OsVersion) > 0 && !HasString(osversion, obj.OsVersion) {
continue
}
// Process "special" patterns which aren't test names, but influence overall behavior
if obj.Pattern == SkipConsoleWarningsTag {
SkipConsoleWarnings = true
continue
}
if obj.SnoozeDate != "" {
snoozeDate, err := time.Parse(snoozeFormat, obj.SnoozeDate)
if err != nil {
return err
}
if today.After(snoozeDate) {
fmt.Printf("⏰ Snooze for kola test pattern \"%s\" expired on %s\n", obj.Pattern, snoozeDate.Format("Jan 02 2006"))
if obj.Warn {
fmt.Printf("⚠️ Will warn on failure for kola test pattern \"%s\":\n", obj.Pattern)
WarnOnErrorTests = append(WarnOnErrorTests, obj.Pattern)
}
} else {
fmt.Printf("🕒 Snoozing kola test pattern \"%s\" until %s\n", obj.Pattern, snoozeDate.Format("Jan 02 2006"))
DenylistedTests = append(DenylistedTests, obj.Pattern)
}
} else {
if obj.Warn {
fmt.Printf("⚠️ Will warn on failure for kola test pattern \"%s\":\n", obj.Pattern)
WarnOnErrorTests = append(WarnOnErrorTests, obj.Pattern)
} else {
fmt.Printf("⏭️ Skipping kola test pattern \"%s\":\n", obj.Pattern)
DenylistedTests = append(DenylistedTests, obj.Pattern)
}
}
if obj.Tracker != "" {
fmt.Printf(" 👉 %s\n", obj.Tracker)
}
}
return nil
}
func filterTests(tests map[string]*register.Test, patterns []string, pltfrm string) (map[string]*register.Test, error) {
r := make(map[string]*register.Test)
checkPlatforms := []string{pltfrm}
// sort tags into include/exclude
positiveTags := []string{}
negativeTags := []string{}
for _, tag := range Tags {
if strings.HasPrefix(tag, "!") {
negativeTags = append(negativeTags, tag[1:])
} else {
positiveTags = append(positiveTags, tag)
}
}
// Higher-level functions default to '*' if the user didn't pass anything.
// Notice this. (This totally ignores the corner case where the user
// actually typed '*').
userTypedPattern := !HasString("*", patterns)
for name, t := range tests {
if NoNet && testRequiresInternet(t) {
plog.Debugf("Skipping test that requires network: %s", t.Name)
continue
}
nameMatch, err := MatchesPatterns(t.Name, patterns)
if err != nil {
return nil, err
}
tagMatch := false
for _, tag := range positiveTags {
tagMatch = HasString(tag, t.Tags) || tag == t.RequiredTag
if tagMatch {
break
}
}
negativeTagMatch := false
for _, tag := range negativeTags {
negativeTagMatch = HasString(tag, t.Tags)
if negativeTagMatch {
break
}
}
if negativeTagMatch {
continue
}
if t.RequiredTag != "" && // if the test has a required tag...
!HasString(t.RequiredTag, positiveTags) { // and that tag was not provided by the user
if userTypedPattern && nameMatch {
fmt.Printf("⏭️ Skipping kola test \"%s\" with required tag \"%s\"\n", t.Name, t.RequiredTag)
}
continue // then skip it
}
if userTypedPattern {
// If the user explicitly typed a pattern, then the test *must*
// match by name or by tag. Otherwise, we skip it.
if !nameMatch && !tagMatch {
continue
}
} else {
// If the user didn't explicitly type a pattern, then normally we
// accept all tests, but if they *did* specify tags, then we only
// accept tests which match those tags.
if len(positiveTags) > 0 && !tagMatch {
continue
}
}
isAllowed := func(item string, include, exclude []string) (bool, bool) {
allowed, excluded := true, false
for _, i := range include {
if i == item {
allowed = true
break
} else {
allowed = false
}
}
for _, i := range exclude {
if i == item {
allowed = false
excluded = true
}
}
return allowed, excluded
}
// For now, we hardcode platform independent tests to run only on one platform.
// But in the future, we should optimize this so that an overall
// test planner/scheduler knows to run the test at most once or twice.
// Platform independent tests could also run on AWS sometimes for example.
if !ForceRunPlatformIndependent {
for _, tag := range t.Tags {
if tag == PlatformIndependentTag {
t.Platforms = []string{defaultPlatformIndependentPlatform}
}
}
}
isExcluded := false
allowed := false
for _, platform := range checkPlatforms {
allowedPlatform, excluded := isAllowed(platform, t.Platforms, t.ExcludePlatforms)
if excluded {
isExcluded = true
break
}
allowedArchitecture, _ := isAllowed(Options.CosaBuildArch, t.Architectures, t.ExcludeArchitectures)
allowed = allowed || (allowedPlatform && allowedArchitecture)
}
if isExcluded || !allowed {
continue
}
if allowed, excluded := isAllowed(Options.Distribution, t.Distros, t.ExcludeDistros); !allowed || excluded {
continue
}
if pltfrm == "qemu" {
if allowed, excluded := isAllowed(QEMUOptions.Firmware, t.Firmwares, t.ExcludeFirmwares); !allowed || excluded {
continue
}
}
// Check native tests for arch-specific and distro-specfic exclusion
for k, NativeFuncWrap := range t.NativeFuncs {
_, excluded := isAllowed(Options.Distribution, nil, NativeFuncWrap.Exclusions)
if excluded {
delete(t.NativeFuncs, k)
continue
}
_, excluded = isAllowed(Options.CosaBuildArch, nil, NativeFuncWrap.Exclusions)
if excluded {
delete(t.NativeFuncs, k)
}
}
r[name] = t
}
return r, nil
}
func filterDenylistedTests(tests map[string]*register.Test) (map[string]*register.Test, error) {
r := make(map[string]*register.Test)
for name, t := range tests {
denylisted := false
// Detect anything which is denylisted directly or by pattern
for _, bl := range DenylistedTests {
nameMatch, err := filepath.Match(bl, t.Name)
if err != nil {
return nil, err
}
// If it matched the pattern this test is denylisted
if nameMatch {
denylisted = true
break
}
// Check if any native tests are denylisted. To exclude native tests, specify the high level
// test and a "/" and then the glob pattern.
// - basic/TestNetworkScripts: excludes only TestNetworkScripts
// - basic/* - excludes all
// - If no pattern is specified after / , excludes none
nativedenylistindex := strings.Index(bl, "/")
if nativedenylistindex > -1 {
// Check native tests for arch specific exclusion
for nativetestname := range t.NativeFuncs {
nameMatch, err := filepath.Match(bl[nativedenylistindex+1:], nativetestname)
if err != nil {
return nil, err
}
if nameMatch {
delete(t.NativeFuncs, nativetestname)
}
}
}
}
// If the test is denylisted, skip it and continue to the next test
if denylisted {
plog.Debugf("Skipping denylisted test %s", t.Name)
continue
}
r[name] = t
}
return r, nil
}
// runProvidedTests is a harness for running multiple tests in parallel.
// Filters tests based on a glob pattern and by platform. Has access to all
// tests either registered in this package or by imported packages that
// register tests in their init() function. outputDir is where various test
// logs and data will be written for analysis after the test run. If it already
// exists it will be erased!
func runProvidedTests(testsBank map[string]*register.Test, patterns []string, multiply int, rerun bool, rerunSuccessTags []string, pltfrm, outputDir string) error {
var versionStr string
// Avoid incurring cost of starting machine in getClusterSemver when
// either:
// 1) none of the selected tests care about the version
// 2) glob is an exact match which means minVersion will be ignored
// either way
// Add denylisted tests in kola-denylist.yaml to DenylistedTests
err := ParseDenyListYaml(pltfrm)
if err != nil {
plog.Fatal(err)
}
// Make sure all given patterns by the user match at least one test
for _, pattern := range patterns {
match, err := patternMatchesTests(pattern, testsBank)
if err != nil {
plog.Fatal(err)
}
if !match {
plog.Fatalf("The user provided pattern didn't match any tests: %s", pattern)
}
}
tests, err := filterTests(testsBank, patterns, pltfrm)
if err != nil {
plog.Fatal(err)
}
if len(tests) == 0 {
plog.Fatalf("There are no matching tests to run on this architecture/platform: %s %s", Options.CosaBuildArch, pltfrm)
}
tests, err = filterDenylistedTests(tests)
if err != nil {
plog.Fatal(err)
}
if len(tests) == 0 {
fmt.Printf("There are no tests to run because all tests are denylisted. Output in %v\n", outputDir)
return nil
}
flight, err := NewFlight(pltfrm)
if err != nil {
plog.Fatalf("Flight failed: %v", err)
}
defer flight.Destroy()
// Generate non-exclusive test wrapper (run multiple tests in one VM)
var nonExclusiveTests []*register.Test
for _, test := range tests {
if test.NonExclusive {
if test.ExternalTest == "" {
plog.Fatalf("Tests compiled in kola must be exclusive: %v", test.Name)
}
nonExclusiveTests = append(nonExclusiveTests, test)
delete(tests, test.Name)
}
}
if len(nonExclusiveTests) == 1 {
// If there is only one test then it can just be run by itself
// so add it back to the tests map.
tests[nonExclusiveTests[0].Name] = nonExclusiveTests[0]
} else if len(nonExclusiveTests) > 0 {
buckets := createTestBuckets(nonExclusiveTests)
numBuckets := len(buckets)
for i := 0; i < numBuckets; {
// This test does not need to be registered since it is temporarily
// created to be used as a wrapper
nonExclusiveWrapper := makeNonExclusiveTest(i, buckets[i], flight)
if flight.ConfigTooLarge(*nonExclusiveWrapper.UserData) {
// Since the merged config size is too large, we will split the bucket into
// two buckets
numTests := len(buckets[i])
if numTests == 1 {
// This test bucket cannot be split further so the single test config
// must be too large
err = fmt.Errorf("test %v has a config that is too large", buckets[i][0].Name)
plog.Fatal(err)
}
newBucket1 := buckets[i][:numTests/2]
newBucket2 := buckets[i][numTests/2:]
buckets[i] = newBucket1
buckets = append(buckets, newBucket2)
// Since we're adding a bucket we'll bump the numBuckets and not
// bump `i` during this loop iteration because we want to run through
// the check again for the current bucket which should now have half
// the tests, but may still have a config that's too large.
numBuckets++
} else {
tests[nonExclusiveWrapper.Name] = &nonExclusiveWrapper
i++ // Move to the next bucket to evaluate
}
}
}
if multiply > 1 {
newTests := make(map[string]*register.Test)
for name, t := range tests {
delete(register.Tests, name)
for i := 0; i < multiply; i++ {
newName := fmt.Sprintf("%s%d", name, i)
newT := *t
newT.Name = newName
newTests[newName] = &newT
register.RegisterTest(&newT)
}
}
tests = newTests
}
tests, err = shardTests(tests, Sharding)
if err != nil {
plog.Fatalf("%v", err)
}
opts := harness.Options{
OutputDir: outputDir,
Parallel: TestParallelism,
Sharding: Sharding,
Verbose: true,
Reporters: reporters.Reporters{
reporters.NewJSONReporter("report.json", pltfrm, versionStr),
},
}
var htests harness.Tests
for _, test := range tests {
test := test // for the closure
run := func(h *harness.H) {
defer func() {
// Keep track of failed tests for a rerun
testResults.add(h)
}()
// We launch a seperate cluster for each kola test
// At the end of the test, its cluster is destroyed
runTest(h, test, pltfrm, flight)
}
htests.Add(test.Name, run, (test.Timeout*time.Duration(100+(Options.ExtendTimeoutPercent)))/100)
}
handleSuiteErrors := func(outputDir string, suiteErr error) error {
caughtTestError := suiteErr != nil
if TAPFile != "" {
src := filepath.Join(outputDir, "test.tap")
err := system.CopyRegularFile(src, TAPFile)
if suiteErr == nil && err != nil {
return err
}
}
if caughtTestError {
fmt.Printf("FAIL, output in %v\n", outputDir)
} else {
fmt.Printf("PASS, output in %v\n", outputDir)
}
return suiteErr
}
suite := harness.NewSuite(opts, htests)
runErr := suite.Run()
runErr = handleSuiteErrors(outputDir, runErr)
detectedFailedWarnTrueTests := len(getWarnTrueFailedTests(testResults.getResults())) != 0
testsToRerun := getRerunnable(testsBank, testResults.getResults())
numFailedTests := len(testsToRerun)
if len(testsToRerun) > 0 && rerun {
newOutputDir := filepath.Join(outputDir, "rerun")
fmt.Printf("\n\n======== Re-running failed tests (flake detection) ========\n\n")
reRunErr := runProvidedTests(testsToRerun, []string{"*"}, multiply, false, rerunSuccessTags, pltfrm, newOutputDir)
if reRunErr == nil && allTestsAllowRerunSuccess(testsToRerun, rerunSuccessTags) {
runErr = nil // reset to success since all tests allowed rerun success
numFailedTests = 0 // zero out the tally of failed tests
} else {
runErr = reRunErr
}
}
// Return ErrWarnOnTestFail when ONLY tests with warn:true feature failed
if detectedFailedWarnTrueTests && numFailedTests == 0 {
return ErrWarnOnTestFail
} else {
return runErr
}
}
func getWarnTrueFailedTests(tests []*harness.H) []string {
var warnTrueFailedTests []string
for _, test := range tests {
if !test.Failed() {
continue
}
name := GetBaseTestName(test.Name())
if name == "" {
continue // skip non-exclusive test wrapper
}
if IsWarningOnFailure(name) {
warnTrueFailedTests = append(warnTrueFailedTests, name)
}
}
return warnTrueFailedTests
}
func allTestsAllowRerunSuccess(testsToRerun map[string]*register.Test, rerunSuccessTags []string) bool {
// Always consider the special AllowRerunSuccessTag that is added
// by the test harness in some failure scenarios.
rerunSuccessTags = append(rerunSuccessTags, AllowRerunSuccessTag)
// Build up a map of rerunSuccessTags so that we can easily check
// if a given tag is in the map.
rerunSuccessTagMap := make(map[string]bool)
for _, tag := range rerunSuccessTags {
if tag == "all" || tag == "*" {
// If `all` or `*` is in rerunSuccessTags then we can return early
return true
}
rerunSuccessTagMap[tag] = true
}
// Iterate over the tests that were re-ran. If any of them don't
// allow rerun success then just exit early.
for _, test := range testsToRerun {
testAllowsRerunSuccess := false
for _, tag := range test.Tags {
if rerunSuccessTagMap[tag] {
testAllowsRerunSuccess = true
}
}
if !testAllowsRerunSuccess {
return false
}
}
return true
}
func GetBaseTestName(testName string) string {
// If this is a non-exclusive wrapper then just return the empty string
if nonexclusiveWrapperMatch.MatchString(testName) {
return ""
}
// If the given test is a non-exclusive test with the prefix in
// the name we'll need to pull it apart. For example:
// non-exclusive-test-bucket-0/ext.config.files.license -> ext.config.files.license
substrings := nonexclusivePrefixMatch.Split(testName, 2)
return substrings[len(substrings)-1]
}
func GetRerunnableTestName(testName string) (string, bool) {
name := GetBaseTestName(testName)
if name == "" {
// Test is not rerunnable if the test name matches the wrapper pattern
return "", false
}
if strings.Contains(name, "/") {
// In the case that a test is exclusive, we may
// be adding a subtest. We don't want to do this
return "", false
}
// Tests with 'warn: true' are not rerunnable
if IsWarningOnFailure(name) {
return "", false
}
// The test is not a nonexclusive wrapper, and its not a
// subtest of an exclusive test
return name, true
}
func IsWarningOnFailure(testName string) bool {
for _, pattern := range WarnOnErrorTests {
found, err := filepath.Match(pattern, testName)
if err != nil {
plog.Fatal(err)
return false
}
if found {
return true
}
}
return false
}
func getRerunnable(testsBank map[string]*register.Test, testResults []*harness.H) map[string]*register.Test {
// First get the names of the tests that need to rerun
var testNamesToRerun []string
for _, h := range testResults {
// The current nonexclusive test wrapper would have all non-exclusive tests.
// We would add all those tests for rerunning if none of the non-exclusive
// subtests start due to some initial failure.
if nonexclusiveWrapperMatch.MatchString(h.Name()) && !h.GetNonExclusiveTestStarted() {
if h.Failed() {
testNamesToRerun = append(testNamesToRerun, h.Subtests()...)
}
} else {
name, isRerunnable := GetRerunnableTestName(h.Name())
if h.Failed() && isRerunnable {
testNamesToRerun = append(testNamesToRerun, name)
}
}
}
// Then convert the list of names into a list of a register.Test objects
testsToRerun := make(map[string]*register.Test)
for name, t := range testsBank {
for _, rerun := range testNamesToRerun {
if name == rerun {
testsToRerun[name] = t