| // Copyright 2019 The LUCI 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. |
| |
| package cli |
| |
| import ( |
| "bufio" |
| "bytes" |
| "context" |
| "encoding/json" |
| "fmt" |
| "io" |
| "os" |
| "strings" |
| "time" |
| |
| "github.com/golang/protobuf/jsonpb" |
| "github.com/golang/protobuf/proto" |
| "github.com/maruel/subcommands" |
| "golang.org/x/sync/errgroup" |
| "google.golang.org/protobuf/encoding/protojson" |
| "google.golang.org/protobuf/types/known/fieldmaskpb" |
| |
| "go.chromium.org/luci/auth" |
| "go.chromium.org/luci/common/cli" |
| "go.chromium.org/luci/common/data/text" |
| "go.chromium.org/luci/common/data/text/indented" |
| "go.chromium.org/luci/common/errors" |
| |
| "go.chromium.org/luci/resultdb/pbutil" |
| pb "go.chromium.org/luci/resultdb/proto/v1" |
| ) |
| |
| func cmdQuery(p Params) *subcommands.Command { |
| return &subcommands.Command{ |
| UsageLine: `query [flags] [INVOCATION_ID]...`, |
| ShortDesc: "query results", |
| LongDesc: text.Doc(` |
| Query results. |
| |
| Most users will be interested only in results of test variants that had |
| unexpected results. This can be achieved by passing -u flag. |
| This significantly reduces output size and latency. |
| |
| If no invocation ids are specified on the command line, read them from |
| stdin separated by newline. Example: |
| bb chromium/ci/linux-rel -status failure -inv -10 | rdb query |
| `), |
| CommandRun: func() subcommands.CommandRun { |
| r := &queryRun{} |
| r.RegisterGlobalFlags(p) |
| r.RegisterJSONFlag(text.Doc(` |
| Print results in JSON format separated by newline. |
| One result takes exactly one line. Result object properties are invocationId |
| and one of |
| testResult: luci.resultdb.v1.TestResult message. |
| testExoneration: luci.resultdb.v1.TestExoneration message. |
| invocation: luci.resultdb.v1.Invocation message. |
| `)) |
| |
| r.Flags.IntVar(&r.limit, "n", 0, text.Doc(` |
| Print up to n results. If 0, then unlimited. |
| Invocations do not count as results. |
| `)) |
| |
| r.Flags.BoolVar(&r.unexpected, "u", false, text.Doc(` |
| Print only test results of test variants that have unexpected results. |
| For example, if a test variant expected PASS and had results FAIL, FAIL, |
| PASS, then print all of them. |
| This signficantly reduces output size and latency. |
| `)) |
| |
| r.Flags.StringVar(&r.testID, "test", "", text.Doc(` |
| A regular expression for test id. Implicitly wrapped with ^ and $. |
| |
| Example: ninja://chrome/test:browser_tests/.+ |
| `)) |
| |
| r.Flags.BoolVar(&r.merge, "merge", false, text.Doc(` |
| Merge results of the invocations, as if they were included into one |
| invocation. |
| Useful when the invocations are a part of one computation, e.g. shards |
| of a test. |
| `)) |
| |
| r.Flags.StringVar(&r.trFields, "tr-fields", "", text.Doc(` |
| Test result fields to include in the response. Fields should be passed |
| as a comma separated string to match the JSON encoding schema of FieldMask. |
| Test result names will always be included even if "name" is not a part |
| of the fields. |
| `)) |
| return r |
| }, |
| } |
| } |
| |
| type queryRun struct { |
| baseCommandRun |
| |
| limit int |
| unexpected bool |
| testID string |
| merge bool |
| trFields string |
| invIDs []string |
| |
| // TODO(crbug.com/1021849): add flag -artifact-dir |
| // TODO(crbug.com/1021849): add flag -artifact-name |
| } |
| |
| func (r *queryRun) parseArgs(args []string) error { |
| r.invIDs = args |
| if len(r.invIDs) == 0 { |
| var err error |
| if r.invIDs, err = readStdin(); err != nil { |
| return err |
| } |
| } |
| |
| for _, id := range r.invIDs { |
| if err := pbutil.ValidateInvocationID(id); err != nil { |
| return errors.Annotate(err, "invocation id %q", id).Err() |
| } |
| } |
| |
| if r.limit < 0 { |
| return errors.Reason("-n must be non-negative").Err() |
| } |
| |
| // TODO(crbug.com/1021849): improve validation. |
| return nil |
| } |
| |
| func (r *queryRun) Run(a subcommands.Application, args []string, env subcommands.Env) int { |
| ctx := cli.GetContext(a, r, env) |
| |
| if err := r.parseArgs(args); err != nil { |
| return r.done(err) |
| } |
| |
| if err := r.initClients(ctx, auth.SilentLogin); err != nil { |
| return r.done(err) |
| } |
| |
| return r.done(r.queryAndPrint(ctx, r.invIDs)) |
| } |
| |
| // readStdin reads all lines from os.Stdin. |
| func readStdin() ([]string, error) { |
| // This context is used only to cancel the goroutine below. |
| ctx, cancel := context.WithCancel(context.Background()) |
| defer cancel() |
| go func() { |
| select { |
| case <-time.After(time.Second): |
| fmt.Fprintln(os.Stderr, "expecting invocation ids on the command line or stdin...") |
| case <-ctx.Done(): |
| } |
| }() |
| |
| var ret []string |
| stdin := bufio.NewReader(os.Stdin) |
| for { |
| line, err := stdin.ReadString('\n') |
| if err == io.EOF { |
| return ret, nil |
| } |
| if err != nil { |
| return nil, err |
| } |
| ret = append(ret, strings.TrimSuffix(line, "\n")) |
| cancel() // do not print the warning since we got something. |
| } |
| } |
| |
| type resultItem struct { |
| invocationID string |
| result proto.Message |
| } |
| |
| // queryAndPrint queries results and prints them. |
| func (r *queryRun) queryAndPrint(ctx context.Context, invIDs []string) error { |
| eg, ctx := errgroup.WithContext(ctx) |
| resultC := make(chan resultItem) |
| |
| for _, id := range invIDs { |
| id := id |
| eg.Go(func() error { |
| return r.fetchInvocation(ctx, id, resultC) |
| }) |
| } |
| |
| trMask := &fieldmaskpb.FieldMask{} |
| if r.trFields != "" { |
| if err := protojson.Unmarshal([]byte(fmt.Sprintf(`"%s"`, r.trFields)), trMask); err != nil { |
| return errors.Annotate(err, "tr-fields").Err() |
| } |
| } |
| |
| // Fetch items into resultC. |
| if r.merge { |
| eg.Go(func() error { |
| return r.fetchItems(ctx, invIDs, trMask, resultItem{}, resultC) |
| }) |
| } else { |
| for _, id := range invIDs { |
| id := id |
| tmpl := resultItem{invocationID: id} |
| eg.Go(func() error { |
| return r.fetchItems(ctx, []string{id}, trMask, tmpl, resultC) |
| }) |
| } |
| } |
| |
| // Wait for fetchers to finish and close resultC. |
| errC := make(chan error) |
| go func() { |
| err := eg.Wait() |
| close(resultC) |
| errC <- err |
| }() |
| |
| r.printProto(resultC, r.json) |
| return <-errC |
| } |
| |
| // fetchInvocation fetches an invocation. |
| func (r *queryRun) fetchInvocation(ctx context.Context, invID string, dest chan<- resultItem) error { |
| res, err := r.resultdb.GetInvocation(ctx, &pb.GetInvocationRequest{Name: pbutil.InvocationName(invID)}) |
| if err != nil { |
| return err |
| } |
| dest <- resultItem{invocationID: invID, result: res} |
| return nil |
| } |
| |
| // fetchItems fetches test results and exonerations from the specified invocations. |
| func (r *queryRun) fetchItems(ctx context.Context, invIDs []string, trMask *fieldmaskpb.FieldMask, resultItemTemplate resultItem, dest chan<- resultItem) error { |
| invNames := make([]string, len(invIDs)) |
| for i, id := range invIDs { |
| invNames[i] = pbutil.InvocationName(id) |
| } |
| |
| // Prepare a test result request. |
| trReq := &pb.QueryTestResultsRequest{ |
| Invocations: invNames, |
| Predicate: &pb.TestResultPredicate{TestIdRegexp: r.testID}, |
| PageSize: int32(r.limit), |
| ReadMask: trMask, |
| } |
| if r.unexpected { |
| trReq.Predicate.Expectancy = pb.TestResultPredicate_VARIANTS_WITH_UNEXPECTED_RESULTS |
| } |
| |
| // Prepare a test exoneration request. |
| teReq := &pb.QueryTestExonerationsRequest{ |
| Invocations: invNames, |
| Predicate: &pb.TestExonerationPredicate{ |
| TestIdRegexp: r.testID, |
| }, |
| PageSize: int32(r.limit), |
| } |
| |
| // Query for results. |
| msgC := make(chan proto.Message) |
| errC := make(chan error, 1) |
| queryCtx, cancelQuery := context.WithCancel(ctx) |
| defer cancelQuery() |
| go func() { |
| defer close(msgC) |
| errC <- pbutil.Query(queryCtx, msgC, r.resultdb, trReq, teReq) |
| }() |
| |
| // Send findings to the destination channel. |
| count := 0 |
| reachedLimit := false |
| for m := range msgC { |
| if r.limit > 0 && count > r.limit { |
| reachedLimit = true |
| cancelQuery() |
| break |
| } |
| count++ |
| |
| item := resultItemTemplate |
| item.result = m |
| select { |
| case dest <- item: |
| case <-ctx.Done(): |
| return ctx.Err() |
| } |
| } |
| |
| // Return the query error. |
| err := <-errC |
| if reachedLimit && err == context.Canceled { |
| err = nil |
| } |
| return err |
| } |
| |
| // printProto prints results in JSON or TextProto format to stdout. |
| // Each result takes exactly one line and is followed by newline. |
| // |
| // The printed JSON supports streaming, and is easy to parse by languages (Python) |
| // that cannot parse an arbitrary sequence of JSON values. |
| func (r *queryRun) printProto(resultC <-chan resultItem, printJSON bool) { |
| enc := json.NewEncoder(os.Stdout) |
| ind := &indented.Writer{ |
| Writer: os.Stdout, |
| UseSpaces: true, |
| } |
| for res := range resultC { |
| var key string |
| switch res.result.(type) { |
| case *pb.TestResult: |
| key = "testResult" |
| case *pb.TestExoneration: |
| key = "testExoneration" |
| case *pb.Invocation: |
| key = "invocation" |
| default: |
| panic(fmt.Sprintf("unexpected result type %T", res.result)) |
| } |
| |
| if printJSON { |
| obj := map[string]any{ |
| key: json.RawMessage(msgToJSON(res.result)), |
| } |
| if !r.merge { |
| obj["invocationId"] = res.invocationID |
| } |
| enc.Encode(obj) // prints \n in the end |
| } else { |
| fmt.Fprintf(ind, "%s:\n", key) |
| ind.Level++ |
| proto.MarshalText(ind, res.result) |
| ind.Level-- |
| fmt.Fprintln(ind) |
| } |
| } |
| } |
| |
| func msgToJSON(msg proto.Message) []byte { |
| buf := &bytes.Buffer{} |
| m := jsonpb.Marshaler{} |
| if err := m.Marshal(buf, msg); err != nil { |
| panic(fmt.Sprintf("failed to marshal protobuf message %q in memory", msg)) |
| } |
| return buf.Bytes() |
| } |