devlopment branch (#1736)

vendor/k8s.io/kubectl/pkg/rawhttp/raw.go

@@ -0,0 +1,94 @@
+/*
+Copyright 2019 The Kubernetes Authors.
+
+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 rawhttp
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"os"
+
+	"k8s.io/cli-runtime/pkg/genericclioptions"
+	"k8s.io/client-go/rest"
+)
+
+// RawPost uses the REST client to POST content
+func RawPost(restClient *rest.RESTClient, streams genericclioptions.IOStreams, url, filename string) error {
+	return raw(restClient, streams, url, filename, "POST")
+}
+
+// RawPut uses the REST client to PUT content
+func RawPut(restClient *rest.RESTClient, streams genericclioptions.IOStreams, url, filename string) error {
+	return raw(restClient, streams, url, filename, "PUT")
+}
+
+// RawGet uses the REST client to GET content
+func RawGet(restClient *rest.RESTClient, streams genericclioptions.IOStreams, url string) error {
+	return raw(restClient, streams, url, "", "GET")
+}
+
+// RawDelete uses the REST client to DELETE content
+func RawDelete(restClient *rest.RESTClient, streams genericclioptions.IOStreams, url, filename string) error {
+	return raw(restClient, streams, url, filename, "DELETE")
+}
+
+// raw makes a simple HTTP request to the provided path on the server using the default credentials.
+func raw(restClient *rest.RESTClient, streams genericclioptions.IOStreams, url, filename, requestType string) error {
+	var data io.ReadCloser
+	switch {
+	case len(filename) == 0:
+		data = ioutil.NopCloser(bytes.NewBuffer([]byte{}))
+
+	case filename == "-":
+		data = ioutil.NopCloser(streams.In)
+
+	default:
+		var err error
+		data, err = os.Open(filename)
+		if err != nil {
+			return err
+		}
+	}
+
+	var request *rest.Request
+	switch requestType {
+	case "GET":
+		request = restClient.Get().RequestURI(url)
+	case "PUT":
+		request = restClient.Put().RequestURI(url).Body(data)
+	case "POST":
+		request = restClient.Post().RequestURI(url).Body(data)
+	case "DELETE":
+		request = restClient.Delete().RequestURI(url).Body(data)
+
+	default:
+		return fmt.Errorf("unknown requestType: %q", requestType)
+	}
+
+	stream, err := request.Stream()
+	if err != nil {
+		return err
+	}
+	defer stream.Close()
+
+	_, err = io.Copy(streams.Out, stream)
+	if err != nil && err != io.EOF {
+		return err
+	}
+	return nil
+}