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request.go
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request.go
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/*******************************************************************************
* Copyright 2019 Dell Inc.
*
* 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 device
import (
"context"
"fmt"
"net/http"
"github.com/edgexfoundry/go-mod-core-contracts/clients/logger"
)
type RequestType int
const (
Mock RequestType = 0
Http RequestType = 1
)
type Requester interface {
// Execute will invoke the supplied request. I'm not thrilled about providing the extra parameter here, but it
// follows from the net/http/Client.Do(req *Request) from the Go std lib. That is, I don't know the actual request
// to be performed until runtime and if I am to mock this properly, I don't know the request at the time of
// injection.
Execute(req *http.Request)
}
type httpRequester struct {
client http.Client
ctx context.Context
logger logger.LoggingClient
}
func NewRequester(key RequestType, logger logger.LoggingClient, ctx context.Context) (r Requester, err error) {
switch key {
case Http:
return httpRequester{client: http.Client{}, ctx: ctx, logger: logger}, nil
case Mock:
return mockRequester{logger: logger}, nil
default:
return nil, fmt.Errorf("unrecognized RequestType value %v", key)
}
}
func (op httpRequester) Execute(req *http.Request) {
resp, err := op.client.Do(req)
if err == nil {
defer resp.Body.Close()
return
}
op.logger.Error(err.Error())
}
type mockRequester struct {
logger logger.LoggingClient
}
func (op mockRequester) Execute(req *http.Request) {
}