security.go

// SPDX-License-Identifier: Apache-2.0
//
// The OpenSearch Contributors require contributions made to
// this file be licensed under the Apache-2.0 license or a
// compatible open source license.
//
// Modifications Copyright OpenSearch Contributors. See
// GitHub history for details.

// 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 security

import (
	"context"
	"crypto/tls"
	"encoding/json"
	"fmt"
	"io"
	"net/http"

	"github.com/jakob3xd/opensearch-golang"
)

type Config struct {
	Client opensearch.Config
}

type Client struct {
	client *opensearch.Client
	Users  usersClient
}

func clientInit(rootClient *opensearch.Client) *Client {
	client := &Client{
		client: rootClient,
	}
	client.Users = usersClient{securityClient: client}
	return client
}

// NewClient returns a security client
func NewClient(config Config) (*Client, error) {
	rootClient, err := opensearch.NewClient(config.Client)
	if err != nil {
		return nil, err
	}
	return clientInit(rootClient), nil
}

// NewDefaultClient returns a secure client using defauls
func NewDefaultClient() (*Client, error) {
	rootClient, err := opensearch.NewClient(opensearch.Config{
		Username:  "admin",
		Password:  "admin",
		Addresses: []string{"https://localhost:9200"},
		Transport: &http.Transport{
			TLSClientConfig: &tls.Config{InsecureSkipVerify: true},
		},
	})
	if err != nil {
		return nil, err
	}
	return clientInit(rootClient), nil
}

func (c *Client) do(ctx context.Context, req opensearch.Request, dataPointer any) (*opensearch.Response, error) {
	resp, err := c.client.Do(ctx, req, dataPointer)
	if err != nil {
		return nil, err
	}
	if resp.IsError() {
		if resp.Body == nil {
			return nil, fmt.Errorf(resp.Status())
		}
		body, err := io.ReadAll(resp.Body)
		if err != nil {
			return nil, fmt.Errorf("status: %d, error: %s", resp.StatusCode, err)
		}
		var apiError Error
		if err = json.Unmarshal(body, &apiError); err != nil {
			return nil, fmt.Errorf("status: %d, error: %s", resp.StatusCode, err)
		}
		return nil, apiError
	}
	return resp, nil
}