surrealpatch/trc/main.go

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// Copyright © 2016 Abcum Ltd
//
// 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 trc
import (
"context"
"go.opencensus.io/trace"
"github.com/abcum/surreal/cnf"
"github.com/abcum/surreal/log"
"contrib.go.opencensus.io/exporter/stackdriver"
)
func Setup(opts *cnf.Options) (err error) {
log.WithPrefix("log").Infof("Starting open tracing framework")
var exporter *stackdriver.Exporter
opt := stackdriver.Options{
ProjectID: "surreal-io",
OnError: func(error) {},
}
exporter, err = stackdriver.NewExporter(opt)
if err != nil {
return err
}
err = exporter.StartMetricsExporter()
if err != nil {
return err
}
trace.ApplyConfig(trace.Config{
DefaultSampler: trace.AlwaysSample(),
})
trace.RegisterExporter(exporter)
return
}
func Start(ctx context.Context, name string) (context.Context, *trace.Span) {
return trace.StartSpan(ctx, name)
}