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cmd/coordinator: add SlowBots support, opt-in to different slow trybots
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This parses TRY= comments to opt-in to slower/difference trybots.

This needs some docs/UI work yet.

Updates golang/go#34501

Change-Id: I13a835520d7ac341bc86139b0a2118235bc83e60
Reviewed-on: https://go-review.googlesource.com/c/build/+/201338
Run-TryBot: Brad Fitzpatrick <[email protected]>
TryBot-Result: Gobot Gobot <[email protected]>
Reviewed-by: Bryan C. Mills <[email protected]>
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@bradfitz
bradfitz committed Oct 18, 2019
1 parent c53d4ba commit aab8504
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Showing 5 changed files with 295 additions and 7 deletions.
112 changes: 105 additions & 7 deletions cmd/coordinator/coordinator.go
View file
Original file line number Diff line number Diff line change
Expand Up @@ -42,6 +42,7 @@ import (
"sync"
"sync/atomic"
"time"
"unicode"

"go4.org/syncutil"
grpc "grpc.go4.org"
Expand Down Expand Up @@ -1054,7 +1055,8 @@ func (k *tryKey) ChangeTriple() string {
type trySet struct {
// immutable
tryKey
tryID string // "T" + 9 random hex
tryID string // "T" + 9 random hex
slowBots []*dashboard.BuildConfig // any opt-in slower builders to run in a trybot run

// wantedAsOf is guarded by statusMu and is used by
// findTryWork. It records the last time this tryKey was still
Expand Down Expand Up @@ -1105,14 +1107,19 @@ var testingKnobSkipBuilds bool
func newTrySet(work *apipb.GerritTryWorkItem) *trySet {
key := tryWorkItemKey(work)
goBranch := key.Branch // assume same as repo's branch for now

builders := dashboard.TryBuildersForProject(key.Project, key.Branch, goBranch)
slowBots := slowBotsFromComments(work, builders)
builders = append(builders, slowBots...)

log.Printf("Starting new trybot set for %v", key)
ts := &trySet{
tryKey: key,
tryID: "T" + randHex(9),
trySetState: trySetState{
builds: make([]*buildStatus, 0, len(builders)),
},
slowBots: slowBots,
}

// Defensive check that the input is well-formed.
Expand Down Expand Up @@ -1237,7 +1244,11 @@ func (ts *trySet) state() trySetState {
// notifyStarting runs in its own goroutine and posts to Gerrit that
// the trybots have started on the user's CL with a link of where to watch.
func (ts *trySet) notifyStarting() {
msg := "TryBots beginning. Status page: https://farmer.golang.org/try?commit=" + ts.Commit[:8]
name := "TryBots"
if len(ts.slowBots) > 0 {
name = "SlowBots"
}
msg := name + " beginning. Status page: https://farmer.golang.org/try?commit=" + ts.Commit[:8]

ctx := context.Background()
if ci, err := gerritClient.GetChangeDetail(ctx, ts.ChangeTriple()); err == nil {
Expand Down Expand Up @@ -1382,20 +1393,38 @@ func (ts *trySet) noteBuildComplete(bs *buildStatus) {
}

if remain == 0 {
score, msg := 1, "TryBots are happy."
if numFail > 0 {
name := "TryBots"
if len(ts.slowBots) > 0 {
name = "SlowBots"
}

var buf bytes.Buffer
var score int
if numFail == 0 {
score = 1
fmt.Fprintf(&buf, "%s are happy.\n", name)
} else if numFail > 0 {
score = -1
ts.mu.Lock()
errMsg := ts.errMsg.String()
ts.mu.Unlock()
score, msg = -1, fmt.Sprintf("%d of %d TryBots failed:\n%s\n"+failureFooter,
numFail, len(ts.builds), errMsg)
fmt.Fprintf(&buf, "%d of %d %s failed:\n%s\n"+failureFooter,
numFail, len(ts.builds), name, errMsg)
}
if len(ts.slowBots) > 0 {
fmt.Fprintf(&buf, "Extra slowbot builds that ran:\n")
for _, c := range ts.slowBots {
fmt.Fprintf(&buf, "* %s\n", c.Name)
}
}
// TODO: provide a link in the final report that links to a permanent summary page
// of which builds ran, and for how long.
if len(benchResults) > 0 {
// TODO: restore this functionality
// msg += fmt.Sprintf("\nBenchmark results are available at:\nhttps://perf.golang.org/search?q=cl:%d+try:%s", ts.ci.ChangeNumber, ts.tryID)
}
if err := gerritClient.SetReview(context.Background(), ts.ChangeTriple(), ts.Commit, gerrit.ReviewInput{
Message: msg,
Message: buf.String(),
Labels: map[string]int{
"TryBot-Result": score,
},
Expand Down Expand Up @@ -1857,12 +1886,25 @@ func (st *buildStatus) build() error {

func (st *buildStatus) isTry() bool { return st.trySet != nil }

func (st *buildStatus) isSlowBot() bool {
if st.trySet == nil {
return false
}
for _, conf := range st.trySet.slowBots {
if st.conf == conf {
return true
}
}
return false
}

func (st *buildStatus) buildRecord() *types.BuildRecord {
rec := &types.BuildRecord{
ID: st.buildID,
ProcessID: processID,
StartTime: st.startTime,
IsTry: st.isTry(),
IsExtra: st.isSlowBot(),
GoRev: st.Rev,
Rev: st.SubRevOrGoRev(),
Repo: st.RepoOrGo(),
Expand Down Expand Up @@ -3634,3 +3676,59 @@ func importPathOfRepo(repo string) string {
}
return "golang.org/x/" + repo
}

// slowBotsFromComments looks at the TRY= comments from Gerrit (in
// work) and returns any addition slow trybot build configuration that
// should be tested in addition to the ones provided in the existing
// slice.
func slowBotsFromComments(work *apipb.GerritTryWorkItem, existing []*dashboard.BuildConfig) (extraBuilders []*dashboard.BuildConfig) {
tryMsg := latestTryMessage(work) // "aix, darwin, linux-386-387, arm64"
if tryMsg == "" {
return nil
}
if len(tryMsg) > 1<<10 { // arbitrary sanity
return nil
}

have := map[string]bool{}
for _, bc := range existing {
have[bc.Name] = true
}

tryTerms := strings.FieldsFunc(tryMsg, func(c rune) bool {
return !unicode.IsLetter(c) && !unicode.IsNumber(c) && c != '-' && c != '_'
})
for _, bc := range dashboard.Builders {
if have[bc.Name] {
continue
}
for _, term := range tryTerms {
if bc.MatchesSlowBotTerm(term) {
extraBuilders = append(extraBuilders, bc)
break
}
}
}
sort.Slice(extraBuilders, func(i, j int) bool {
return extraBuilders[i].Name < extraBuilders[j].Name
})
return
}

func latestTryMessage(work *apipb.GerritTryWorkItem) string {
// Prioritize exact version matches first
for i := len(work.TryMessage) - 1; i >= 0; i-- {
m := work.TryMessage[i]
if m.Version == work.Version {
return m.Message
}
}
// Otherwise the latest message at all
for i := len(work.TryMessage) - 1; i >= 0; i-- {
m := work.TryMessage[i]
if m.Message != "" {
return m.Message
}
}
return ""
}
39 changes: 39 additions & 0 deletions cmd/coordinator/coordinator_test.go
View file
Original file line number Diff line number Diff line change
Expand Up @@ -19,6 +19,7 @@ import (
"time"

"golang.org/x/build/buildenv"
"golang.org/x/build/dashboard"
"golang.org/x/build/internal/buildgo"
"golang.org/x/build/maintner/maintnerd/apipb"
)
Expand Down Expand Up @@ -211,3 +212,41 @@ func TestBuildersJSON(t *testing.T) {
t.Error(buf.String())
}
}

func mustConf(t *testing.T, name string) *dashboard.BuildConfig {
conf, ok := dashboard.Builders[name]
if !ok {
t.Fatalf("unknown builder %q", name)
}
return conf
}

func TestSlowBotsFromComments(t *testing.T) {
existing := []*dashboard.BuildConfig{mustConf(t, "linux-amd64")}
work := &apipb.GerritTryWorkItem{
Version: 2,
TryMessage: []*apipb.TryVoteMessage{
{
Version: 1,
Message: "ios",
},
{
Version: 2,
Message: "arm64, mac aix ",
},
{
Version: 1,
Message: "aix",
},
},
}
extra := slowBotsFromComments(work, existing)
var got []string
for _, bc := range extra {
got = append(got, bc.Name)
}
want := []string{"aix-ppc64", "darwin-amd64-10_14", "linux-arm64-packet"}
if !reflect.DeepEqual(got, want) {
t.Errorf("mismatch:\n got: %q\nwant: %q\n", got, want)
}
}
82 changes: 82 additions & 0 deletions dashboard/builders.go
View file
Original file line number Diff line number Diff line change
Expand Up @@ -19,6 +19,81 @@ import (
"golang.org/x/build/types"
)

// slowBotAliases maps short names from TRY= comments to which builder to run.
//
// TODO: we'll likely expand this, or move it, or change the matching
// syntax entirely. This is a first draft.
var slowBotAliases = map[string]string{
// Known missing builders:
"linux-mips": "",
"linux-mips64": "",
"linux-mipsle": "",
"mips": "",
"mips64": "",
"mipsle": "",
"netbsd-arm64": "",
"openbsd-arm": "",
"openbsd-arm64": "",
"nacl-arm": "",

"386": "linux-386",
"aix": "aix-ppc64",
"amd64": "linux-amd64",
"amd64p32": "nacl-amd64p32",
"android": "android-amd64-emu",
"android-386": "android-386-emu",
"android-amd64": "android-amd64-emu",
"android-arm": "android-arm-corellium",
"android-arm64": "android-arm64-corellium",
"arm": "linux-arm",
"arm64": "linux-arm64-packet",
"arm64p32": "nacl-amd64p32",
"darwin": "darwin-amd64-10_14",
"darwin-386": "darwin-386-10_14",
"darwin-amd64": "darwin-amd64-10_14",
"darwin-arm": "darwin-arm-mg912baios",
"darwin-arm64": "darwin-arm64-corellium",
"dragonfly": "dragonfly-amd64",
"freebsd": "freebsd-amd64-12_0",
"freebsd-386": "freebsd-386-12_0",
"freebsd-amd64": "freebsd-amd64-12_0",
"freebsd-arm": "freebsd-arm-paulzhol",
"illumos": "illumos-amd64",
"ios": "darwin-arm64-corellium",
"js": "js-wasm",
"linux": "linux-amd64",
"linux-arm64": "linux-arm64-packet",
"linux-mips64le": "linux-mips64le-mengzhuo",
"linux-ppc64": "linux-ppc64-buildlet",
"linux-ppc64le": "linux-ppc64le-buildlet",
"linux-s390x": "linux-s390x-ibm",
"mac": "darwin-amd64-10_14",
"macos": "darwin-amd64-10_14",
"mips64le": "linux-mips64le-mengzhuo",
"nacl": "nacl-amd64p32",
"nacl-387": "nacl-386",
"nacl-arm64p32": "nacl-amd64p32",
"netbsd": "netbsd-amd64-8_0",
"netbsd-386": "netbsd-386-8_0",
"netbsd-amd64": "netbsd-amd64-8_0",
"netbsd-arm": "netbsd-arm-bsiegert",
"openbsd": "openbsd-amd64-64",
"openbsd-386": "openbsd-386-64",
"openbsd-amd64": "openbsd-amd64-64",
"plan9": "plan9-386-0intro",
"plan9-386": "plan9-386-0intro",
"plan9-amd64": "plan9-amd64-9front",
"ppc64": "linux-ppc64-buildlet",
"ppc64le": "linux-ppc64le-buildlet",
"s390x": "linux-s390x-ibm",
"solaris": "solaris-amd64-oraclerel",
"solaris-amd64": "solaris-amd64-oraclerel",
"wasm": "js-wasm",
"windows": "windows-amd64-2016",
"windows-386": "windows-386-2008",
"windows-amd64": "windows-amd64-2016",
}

// Builders are the different build configurations.
// The keys are like "darwin-amd64" or "linux-386-387".
// This map should not be modified by other packages.
Expand Down Expand Up @@ -787,6 +862,13 @@ func (c *BuildConfig) GOARCH() string {
return arch[:i]
}

// MatchesSlowBotTerm reports whether some provided term from a
// TRY=... comment on a Run-TryBot+1 vote on Gerrit should match this
// build config.
func (c *BuildConfig) MatchesSlowBotTerm(term string) bool {
return term != "" && (term == c.Name || slowBotAliases[term] == c.Name)
}

// FilePathJoin is mostly like filepath.Join (without the cleaning) except
// it uses the path separator of c.GOOS instead of the host system's.
func (c *BuildConfig) FilePathJoin(x ...string) string {
Expand Down
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