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75 lines
2.5 KiB
75 lines
2.5 KiB
/*
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Copyright © 2020-2023 The k3d Author(s)
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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*/
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package client
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import (
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"fmt"
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"os"
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"time"
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"github.com/goodhosts/hostsfile"
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"github.com/k3d-io/k3d/v5/pkg/actions"
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"github.com/k3d-io/k3d/v5/pkg/runtimes"
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k3d "github.com/k3d-io/k3d/v5/pkg/types"
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)
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func NewHostAliasesInjectEtcHostsAction(runtime runtimes.Runtime, hostAliases []k3d.HostAlias) actions.RewriteFileAction {
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return actions.RewriteFileAction{
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Runtime: runtime,
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Path: "/etc/hosts",
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Mode: 0644,
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Description: "Adding HostAliases to /etc/hosts in nodes",
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Opts: actions.RewriteFileActionOpts{
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NoCopy: true,
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},
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RewriteFunc: func(input []byte) ([]byte, error) {
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tmpHosts, err := os.CreateTemp("", "k3d-hostsfile-*")
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if err != nil {
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return nil, fmt.Errorf("error creating temp hosts file: %w", err)
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}
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if err := os.WriteFile(tmpHosts.Name(), input, 0777); err != nil {
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return nil, fmt.Errorf("error writing to temp hosts file: %w", err)
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}
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hFile, err := hostsfile.NewCustomHosts(tmpHosts.Name())
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if err != nil {
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return nil, fmt.Errorf("error reading temp hosts file: %w", err)
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}
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for _, hostAlias := range hostAliases {
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if err := hFile.Add(hostAlias.IP, hostAlias.Hostnames...); err != nil {
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return nil, fmt.Errorf("error adding hosts file entry for %s:%s: %w", hostAlias.IP, hostAlias.Hostnames, err)
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}
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}
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hFile.Clean()
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if err := hFile.Flush(); err != nil {
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return nil, fmt.Errorf("error flushing hosts file: %w", err)
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}
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time.Sleep(time.Second)
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return os.ReadFile(tmpHosts.Name())
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},
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}
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}
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