blob: a518638741530c81786e239fe06539282a6319ab [file] [log] [blame]
/*
Copyright 2020 the original author or 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 ofagent
import (
"context"
"errors"
"time"
"github.com/golang/protobuf/ptypes/empty"
grpc_middleware "github.com/grpc-ecosystem/go-grpc-middleware"
grpc_opentracing "github.com/grpc-ecosystem/go-grpc-middleware/tracing/opentracing"
"github.com/opencord/voltha-lib-go/v3/pkg/log"
"github.com/opencord/voltha-lib-go/v3/pkg/probe"
"github.com/opencord/voltha-protos/v3/go/voltha"
"google.golang.org/grpc"
)
func (ofa *OFAgent) establishConnectionToVoltha(ctx context.Context, p *probe.Probe) error {
if p != nil {
p.UpdateStatus(ctx, "voltha", probe.ServiceStatusPreparing)
}
if ofa.volthaConnection != nil {
ofa.volthaConnection.Close()
}
ofa.volthaConnection = nil
ofa.volthaClient.Clear()
try := 1
for ofa.ConnectionMaxRetries == 0 || try < ofa.ConnectionMaxRetries {
// Use Intercepters to automatically inject and publish Open Tracing Spans by this GRPC client
conn, err := grpc.Dial(ofa.VolthaApiEndPoint,
grpc.WithInsecure(),
grpc.WithStreamInterceptor(grpc_middleware.ChainStreamClient(
grpc_opentracing.StreamClientInterceptor(grpc_opentracing.WithTracer(log.ActiveTracerProxy{})),
)),
grpc.WithUnaryInterceptor(grpc_middleware.ChainUnaryClient(
grpc_opentracing.UnaryClientInterceptor(grpc_opentracing.WithTracer(log.ActiveTracerProxy{})),
)))
if err == nil {
svc := voltha.NewVolthaServiceClient(conn)
if svc != nil {
if _, err = svc.GetVoltha(log.WithSpanFromContext(context.Background(), ctx), &empty.Empty{}); err == nil {
logger.Debugw(ctx, "Established connection to Voltha",
log.Fields{
"VolthaApiEndPoint": ofa.VolthaApiEndPoint,
})
ofa.volthaConnection = conn
ofa.volthaClient.Set(svc)
if p != nil {
p.UpdateStatus(ctx, "voltha", probe.ServiceStatusRunning)
}
ofa.events <- ofaEventVolthaConnected
return nil
}
}
}
logger.Warnw(ctx, "Failed to connect to voltha",
log.Fields{
"VolthaApiEndPoint": ofa.VolthaApiEndPoint,
"error": err.Error(),
})
if ofa.ConnectionMaxRetries == 0 || try < ofa.ConnectionMaxRetries {
if ofa.ConnectionMaxRetries != 0 {
try += 1
}
time.Sleep(ofa.ConnectionRetryDelay)
}
}
if p != nil {
p.UpdateStatus(ctx, "voltha", probe.ServiceStatusFailed)
}
return errors.New("failed-to-connect-to-voltha")
}