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client.go
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client.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 babysitter
import (
"context"
"crypto/tls"
"net/http"
"github.com/ServiceWeaver/weaver-gke/internal/endpoints"
"github.com/ServiceWeaver/weaver/runtime/protomsg"
"github.com/ServiceWeaver/weaver/runtime/protos"
)
// HttpClient is a Client that executes requests over HTTP.
type HttpClient struct {
addr string // babysitter address
client *http.Client // The HTTP client to use to make requests.
}
var (
_ endpoints.Babysitter = &Babysitter{}
_ endpoints.Babysitter = &HttpClient{}
)
func NewHttpClient(addr string, tlsConfig *tls.Config) *HttpClient {
client := http.DefaultClient
if tlsConfig != nil {
client = &http.Client{Transport: &http.Transport{TLSClientConfig: tlsConfig}}
}
return &HttpClient{
addr: addr,
client: client,
}
}
// RunProfiling implements the endpoints.Babysitter interface.
func (h *HttpClient) RunProfiling(ctx context.Context, req *protos.GetProfileRequest) (*protos.GetProfileReply, error) {
reply := &protos.GetProfileReply{}
err := protomsg.Call(ctx, protomsg.CallArgs{
Client: h.client,
Addr: h.addr,
URLPath: runProfilingURL,
Request: req,
Reply: reply,
})
return reply, err
}
// GetLoad implements the endpoints.Babysitter interface.
func (h *HttpClient) GetLoad(ctx context.Context, req *endpoints.GetLoadRequest) (*endpoints.GetLoadReply, error) {
reply := &endpoints.GetLoadReply{}
err := protomsg.Call(ctx, protomsg.CallArgs{
Client: h.client,
Addr: h.addr,
URLPath: loadURL,
Request: req,
Reply: reply,
})
return reply, err
}