client.go

// Copyright 2024 Universidad Carlos III de Madrid
//
// 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 sdnclient

import (
	"errors"

	l2smv1 "github.com/Networks-it-uc3m/L2S-M/api/v1"
)

type ClientType string

const (
	InternalType ClientType = "internal"
	ExternalType ClientType = "external"
)

// NetworkStrategy defines the interface for network strategies
type Client interface {
	CreateNetwork(networkType l2smv1.NetworkType, config interface{}) error
	DeleteNetwork(networkType l2smv1.NetworkType, networkID string) error
	CheckNetworkExists(networkType l2smv1.NetworkType, networkID string) (bool, error)
	AttachPodToNetwork(networkType l2smv1.NetworkType, config interface{}) error
}

type ClientConfig struct {
	BaseURL  string
	Username string
	Password string
}

func NewClient(clientType ClientType, config ClientConfig) (Client, error) {
	sessionClient := NewSessionClient(config.BaseURL, config.Username, config.Password)

	switch clientType {
	case InternalType:
		client := &InternalClient{Session: sessionClient}
		if !client.beginSessionController() {
			return nil, errors.New("could not initialize session with SDN controller. Please check the connection details and credentials.")
		}
		return client, nil
	case ExternalType:
		client := &ExternalClient{Session: sessionClient}
		if !client.beginSessionController() {
			return nil, errors.New("could not initialize session with SDN controller. Please check the connection details and credentials.")
		}
		return client, nil
	default:
		return nil, errors.New("unsupported client type")
	}
}