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authentication.go
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authentication.go
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// Copyright 2023 iLogtail 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 elasticsearch
import (
"fmt"
"net/http"
"os"
"time"
"github.com/elastic/go-elasticsearch/v8"
"github.com/alibaba/ilogtail/pkg/tlscommon"
)
type Authentication struct {
// PlainTextConfig
PlainText *PlainTextConfig
// TLS authentication
TLS *tlscommon.TLSConfig
}
type PlainTextConfig struct {
// The username for connecting to clickhouse.
Username string
// The password for connecting to clickhouse.
Password string
}
func (config *Authentication) ConfigureAuthenticationAndHTTP(httpcfg *HTTPConfig, opts *elasticsearch.Config) error {
if config.PlainText != nil {
if err := config.PlainText.ConfigurePlaintext(opts); err != nil {
return err
}
}
transport := &http.Transport{}
if config.TLS != nil {
tlsConfig, err := config.TLS.LoadTLSConfig()
if err != nil {
return fmt.Errorf("error loading tls config: %w", err)
}
if tlsConfig != nil {
transport.TLSClientConfig = tlsConfig
}
if config.TLS.CAFile != "" {
opts.CACert, err = os.ReadFile(config.TLS.CAFile)
if err != nil {
return err
}
}
}
if httpcfg != nil {
if httpcfg.MaxIdleConnsPerHost != 0 {
transport.MaxIdleConnsPerHost = httpcfg.MaxIdleConnsPerHost
}
if httpcfg.ResponseHeaderTimeout != "" {
var unit time.Duration
unit, err := convertTimeUnit(httpcfg.ResponseHeaderTimeout)
if err != nil {
return err
}
transport.ResponseHeaderTimeout = unit
}
}
opts.Transport = transport
return nil
}
func (plainTextConfig *PlainTextConfig) ConfigurePlaintext(opts *elasticsearch.Config) error {
// Validate Auth info
if plainTextConfig.Username == "" || plainTextConfig.Password == "" {
return fmt.Errorf("PlainTextConfig username or password cannot be null")
}
opts.Username = plainTextConfig.Username
opts.Password = plainTextConfig.Password
return nil
}
func convertTimeUnit(unit string) (time.Duration, error) {
val, ok := timeUnitMap[unit]
if !ok {
return 0, fmt.Errorf("unsupported time unit: %q", unit)
}
return val, nil
}
var timeUnitMap = map[string]time.Duration{
"Nanosecond": time.Nanosecond,
"Microsecond": time.Microsecond,
"Millisecond": time.Millisecond,
"Second": time.Second,
"Minute": time.Minute,
"Hour": time.Hour,
}