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query.go
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query.go
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// Copyright (C) 2019 Google 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 main
import (
"context"
"encoding/json"
"flag"
"fmt"
"time"
"github.com/google/gapid/core/app"
"github.com/google/gapid/core/log"
"github.com/google/gapid/core/os/device/bind"
common "protos/perfetto/common"
)
type queryVerb struct {
}
func init() {
verb := &queryVerb{}
app.AddVerb(&app.Verb{
Name: "query",
ShortHelp: "Queries the Perfetto service state",
Action: verb,
})
}
func (verb *queryVerb) Run(ctx context.Context, flags flag.FlagSet) error {
ctx = setupContext(ctx)
time.Sleep(2 * time.Second) // Give the producers some time to register.
for _, d := range bind.GetRegistry(ctx).Devices() {
if !d.SupportsPerfetto(ctx) {
log.I(ctx, "Device %s doesn't support Perfetto", d)
continue
}
c, err := connectToPerfetto(ctx, d)
if err != nil {
return err
}
defer c.Close(ctx)
if err := c.Query(ctx, func(r *common.TracingServiceState) error {
jsonBytes, err := json.MarshalIndent(r, "", " ")
if err != nil {
fmt.Printf("%v\n", log.Err(ctx, err, "Couldn't marshal response to JSON"))
return err
}
fmt.Println(string(jsonBytes))
return nil
}); err != nil {
log.E(ctx, "Failed to query Perfetto: %s", err)
return err
}
}
return nil
}