/
server.go
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/
server.go
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// Copyright 2022 Google LLC
//
// 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 main
import (
"flag"
"fmt"
"net"
"os"
pb "github.com/GoogleContainerTools/kpt/porch/func/evaluator"
"github.com/GoogleContainerTools/kpt/porch/func/internal"
"google.golang.org/grpc"
"k8s.io/klog/v2"
)
var (
port = flag.Int("port", 9445, "The server port")
functions = flag.String("functions", "./functions", "Path to cached functions.")
config = flag.String("config", "./config.yaml", "Path to the config file.")
)
func main() {
flag.Parse()
if err := run(); err != nil {
fmt.Fprintf(os.Stderr, "unexpected error: %v\n", err)
os.Exit(1)
}
}
func run() error {
address := fmt.Sprintf(":%d", *port)
lis, err := net.Listen("tcp", address)
if err != nil {
return fmt.Errorf("failed to listen: %w", err)
}
evaluator, err := internal.NewEvaluatorWithConfig(*functions, *config)
if err != nil {
return fmt.Errorf("failed to initialize evaluator server: %w", err)
}
klog.Infof("Listening on %s", address)
// Start the gRPC server
server := grpc.NewServer()
pb.RegisterFunctionEvaluatorServer(server, evaluator)
if err := server.Serve(lis); err != nil {
return fmt.Errorf("server failed: %w", err)
}
return nil
}