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grpc.go
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grpc.go
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package grpc
import (
"context"
"github.com/alexfalkowski/go-service/client"
"github.com/alexfalkowski/go-service/transport/grpc"
"go.opentelemetry.io/otel/metric"
"go.opentelemetry.io/otel/trace"
"go.uber.org/fx"
"go.uber.org/zap"
g "google.golang.org/grpc"
)
// ClientOpts for gRPC.
type ClientOpts struct {
Lifecycle fx.Lifecycle
Client *client.Config
Logger *zap.Logger
Tracer trace.Tracer
Meter metric.Meter
}
// NewClient for gRPC.
func NewClient(options ClientOpts) (*g.ClientConn, error) {
cfg := options.Client
sec, err := grpc.WithClientTLS(cfg.TLS)
if err != nil {
return nil, err
}
opts := []grpc.ClientOption{
grpc.WithClientLogger(options.Logger), grpc.WithClientTracer(options.Tracer),
grpc.WithClientMetrics(options.Meter), grpc.WithClientRetry(cfg.Retry),
grpc.WithClientUserAgent(cfg.UserAgent), sec,
}
conn, err := grpc.NewClient(cfg.Host, opts...)
options.Lifecycle.Append(fx.Hook{
OnStop: func(_ context.Context) error {
return conn.Close()
},
})
return conn, err
}