upload: define new pulp uploader

Define a basic client struct to pull in the pulp-client library.

internal/upload/pulp/pulp.go

@@ -0,0 +1,43 @@
+package pulp
+
+import (
+	"context"
+	"net/http"
+
+	"github.com/osbuild/pulp-client/pulpclient"
+)
+
+type Client struct {
+	client *pulpclient.APIClient
+	ctx    context.Context
+}
+
+type Credentials struct {
+	Username string
+	Password string
+}
+
+func NewClient(url string, creds *Credentials) *Client {
+	ctx := context.WithValue(context.Background(), pulpclient.ContextServerIndex, 0)
+	transport := &http.Transport{}
+	httpClient := http.Client{Transport: transport}
+
+	pulpConfig := pulpclient.NewConfiguration()
+	pulpConfig.HTTPClient = &httpClient
+	pulpConfig.Servers = pulpclient.ServerConfigurations{pulpclient.ServerConfiguration{
+		URL: url,
+	}}
+	client := pulpclient.NewAPIClient(pulpConfig)
+
+	if creds != nil {
+		ctx = context.WithValue(ctx, pulpclient.ContextBasicAuth, pulpclient.BasicAuth{
+			UserName: creds.Username,
+			Password: creds.Password,
+		})
+	}
+
+	return &Client{
+		client: client,
+		ctx:    ctx,
+	}
+}