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net_config.go
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net_config.go
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/***************************************************************
*
* Copyright (C) 2024, Pelican Project, Morgridge Institute for Research
*
* 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 config
import (
"net"
"net/url"
"strconv"
"sync"
"github.com/pelicanplatform/pelican/param"
log "github.com/sirupsen/logrus"
"github.com/spf13/viper"
)
func UpdateConfigFromListener(ln net.Listener) {
// If we allow net.Listen to select a random open port, we should update the
// configuration with its value.
if param.Server_WebPort.GetInt() == 0 {
addr := ln.Addr()
tcpAddr, ok := addr.(*net.TCPAddr)
if ok {
viper.Set("Server.WebPort", tcpAddr.Port)
serverUrlStr := param.Server_ExternalWebUrl.GetString()
serverUrl, err := url.Parse(serverUrlStr)
if err == nil {
newUrlStr := "https://" + serverUrl.Hostname() + ":" + strconv.Itoa(tcpAddr.Port)
viper.Set("Server.WebHost", serverUrl.Hostname())
viper.Set("Server.ExternalWebUrl", newUrlStr)
if viper.GetString("Federation.DirectorUrl") == serverUrlStr {
viper.Set("Federation.DirectorUrl", newUrlStr)
}
if viper.GetString("Federation.RegistryUrl") == serverUrlStr {
viper.Set("Federation.RegistryUrl", newUrlStr)
}
fedDiscoveryOnce = &sync.Once{}
log.Debugln("Random web port used; updated external web URL to", param.Server_ExternalWebUrl.GetString())
} else {
log.Errorln("Unable to update external web URL for random port; unable to parse existing URL:", serverUrlStr)
}
} else {
log.Error("Unable to determine TCP address of runtime engine")
}
}
}