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service.go
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service.go
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package service
import (
"context"
"fmt"
"github.com/hashicorp/go-multierror"
"github.com/panjf2000/ants/v2"
"github.com/plgd-dev/hub/v2/grpc-gateway/pb"
"github.com/plgd-dev/hub/v2/pkg/fsnotify"
"github.com/plgd-dev/hub/v2/pkg/log"
"github.com/plgd-dev/hub/v2/pkg/net/grpc/server"
otelClient "github.com/plgd-dev/hub/v2/pkg/opentelemetry/collector/client"
"github.com/plgd-dev/hub/v2/pkg/security/jwt/validator"
"github.com/plgd-dev/hub/v2/pkg/service"
)
func New(ctx context.Context, config Config, fileWatcher *fsnotify.Watcher, logger log.Logger) (*service.Service, error) {
otelClient, err := otelClient.New(ctx, config.Clients.OpenTelemetryCollector, "grpc-gateway", fileWatcher, logger)
if err != nil {
return nil, fmt.Errorf("cannot create open telemetry collector client: %w", err)
}
tracerProvider := otelClient.GetTracerProvider()
validator, err := validator.New(ctx, config.APIs.GRPC.Authorization.Config, fileWatcher, logger, tracerProvider)
if err != nil {
otelClient.Close()
return nil, fmt.Errorf("cannot create validator: %w", err)
}
method := "/" + pb.GrpcGateway_ServiceDesc.ServiceName + "/GetHubConfiguration"
interceptor := server.NewAuth(validator, server.WithWhiteListedMethods(method))
opts, err := server.MakeDefaultOptions(interceptor, logger, tracerProvider)
if err != nil {
validator.Close()
return nil, fmt.Errorf("cannot create grpc server options: %w", err)
}
server, err := server.New(config.APIs.GRPC.Config, fileWatcher, logger, opts...)
if err != nil {
validator.Close()
otelClient.Close()
return nil, err
}
server.AddCloseFunc(otelClient.Close)
server.AddCloseFunc(validator.Close)
closeServerOnError := func(err error) error {
var errors *multierror.Error
errors = multierror.Append(errors, err)
if err2 := server.Close(); err2 != nil {
errors = multierror.Append(errors, fmt.Errorf("cannot close server: %w", err2))
}
return errors.ErrorOrNil()
}
pool, err := ants.NewPool(config.Clients.Eventbus.GoPoolSize)
if err != nil {
return nil, closeServerOnError(fmt.Errorf("cannot create goroutine pool: %w", err))
}
server.AddCloseFunc(pool.Release)
if err := addHandler(ctx, server, config, fileWatcher, logger, tracerProvider, pool.Submit); err != nil {
return nil, closeServerOnError(err)
}
return service.New(server), nil
}