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client.go
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client.go
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package grpc
import (
"context"
"github.com/alexfalkowski/auth/client"
t "github.com/alexfalkowski/go-service/security/token"
"github.com/alexfalkowski/go-service/transport/grpc"
gt "github.com/alexfalkowski/go-service/transport/grpc/security/token"
"github.com/alexfalkowski/go-service/transport/grpc/telemetry/tracer"
v1 "github.com/alexfalkowski/migrieren/api/migrieren/v1"
v1c "github.com/alexfalkowski/migrieren/client/v1/config"
"go.opentelemetry.io/otel/metric"
"go.uber.org/fx"
"go.uber.org/zap"
g "google.golang.org/grpc"
)
// ServiceClientParams for gRPC.
type ServiceClientParams struct {
fx.In
Lifecycle fx.Lifecycle
GRPCConfig *grpc.Config
TokenConfig *t.Config
ClientConfig *v1c.Config
Logger *zap.Logger
Tracer tracer.Tracer
Meter metric.Meter
Token *client.Token
}
// NewServiceClient for gRPC.
func NewServiceClient(params ServiceClientParams) (v1.ServiceClient, error) {
opts := []grpc.ClientOption{
grpc.WithClientLogger(params.Logger), grpc.WithClientTracer(params.Tracer),
grpc.WithClientMetrics(params.Meter), grpc.WithClientRetry(¶ms.GRPCConfig.Retry),
grpc.WithClientUserAgent(params.GRPCConfig.UserAgent),
}
if params.TokenConfig.Kind == "auth" {
opts = append(opts, grpc.WithClientDialOption(g.WithPerRPCCredentials(gt.NewPerRPCCredentials(params.Token.Generator("jwt", "migrieren")))))
}
conn, err := grpc.NewClient(context.Background(), params.ClientConfig.Host, opts...)
if err != nil {
return nil, err
}
params.Lifecycle.Append(fx.Hook{
OnStart: func(ctx context.Context) error {
conn.ResetConnectBackoff()
return nil
},
OnStop: func(ctx context.Context) error {
return conn.Close()
},
})
return v1.NewServiceClient(conn), nil
}