62 lines
1.5 KiB
Go
62 lines
1.5 KiB
Go
package updater
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import (
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"context"
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"errors"
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"fmt"
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"sort"
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"github.com/qdm12/gluetun/internal/constants/vpn"
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"github.com/qdm12/gluetun/internal/models"
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"github.com/qdm12/gluetun/internal/provider/common"
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)
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var (
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ErrGetZip = errors.New("cannot get OpenVPN ZIP file")
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ErrGetAPI = errors.New("cannot fetch server information from API")
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)
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func (u *Updater) FetchServers(ctx context.Context, minServers int) (
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servers []models.Server, err error) {
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cities := getAvailableCities()
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servers = make([]models.Server, 0, len(cities))
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hostnames := make([]string, len(cities))
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hostnameToCity := make(map[string]string, len(cities))
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for i, city := range cities {
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hostname := getHostnameFromCity(city)
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hostnames[i] = hostname
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hostnameToCity[hostname] = city
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}
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resolverSettings := parallelResolverSettings(hostnames)
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hostnameToIPs, warnings, err := u.parallelResolver.Resolve(ctx, resolverSettings)
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for _, warning := range warnings {
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u.warner.Warn(warning)
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}
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if err != nil {
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return nil, err
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}
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if len(hostnameToIPs) < minServers {
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return nil, fmt.Errorf("%w: %d and expected at least %d",
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common.ErrNotEnoughServers, len(servers), minServers)
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}
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for hostname, ips := range hostnameToIPs {
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city := hostnameToCity[hostname]
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server := models.Server{
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VPN: vpn.OpenVPN,
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City: city,
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Hostname: hostname,
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UDP: true,
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IPs: ips,
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}
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servers = append(servers, server)
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}
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sort.Sort(models.SortableServers(servers))
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return servers, nil
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}
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