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client.go
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client.go
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// Licensed to the Apache Software Foundation (ASF) under one or more
// contributor license agreements. See the NOTICE file distributed with
// this work for additional information regarding copyright ownership.
// The ASF licenses this file to You 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 client
import (
"context"
"crypto/tls"
"crypto/x509"
"errors"
"log"
"time"
"google.golang.org/grpc"
"google.golang.org/grpc/credentials"
hwpb "google.golang.org/grpc/examples/helloworld/helloworld"
)
// RequestHello request grpc method in addr use specific ca
func RequestHello(addr string, ca []byte) error {
var (
creds credentials.TransportCredentials
tlsConf tls.Config
certPool = x509.NewCertPool()
)
if ok := certPool.AppendCertsFromPEM(ca); !ok {
return errors.New("failed to append ca certs")
}
tlsConf.RootCAs = certPool
creds = credentials.NewTLS(&tlsConf)
conn, err := grpc.Dial(addr, grpc.WithTransportCredentials(creds), grpc.WithAuthority("e2e.apisix.local"))
if err != nil {
return err
}
defer conn.Close()
c := hwpb.NewGreeterClient(conn)
ctx, cancel := context.WithTimeout(context.Background(), time.Second)
defer cancel()
r, err := c.SayHello(ctx, &hwpb.HelloRequest{Name: "apisix-ingress"})
if err != nil {
return err
}
log.Printf("Get response %s", r.GetMessage())
return nil
}