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46 lines
1.3 KiB
Go
46 lines
1.3 KiB
Go
// Copyright (c) HashiCorp, Inc.
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// SPDX-License-Identifier: BUSL-1.1
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package taskenv
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import (
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"github.com/hashicorp/nomad/nomad/structs"
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)
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// InterpolateNetworks returns an interpolated copy of the task group networks
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// with values from the task's environment.
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//
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// Current interoperable fields:
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// - Hostname
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// - DNS
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// - CNI
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func InterpolateNetworks(taskEnv *TaskEnv, networks structs.Networks) structs.Networks {
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// Guard against not having a valid taskEnv. This can be the case if the
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// PreKilling or Exited hook is run before Poststart.
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if taskEnv == nil || networks == nil {
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return nil
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}
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// Create a copy of the networks array, so we can manipulate the copy.
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interpolated := networks.Copy()
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// Iterate the copy and perform the interpolation.
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for i := range interpolated {
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interpolated[i].Hostname = taskEnv.ReplaceEnv(interpolated[i].Hostname)
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if interpolated[i].DNS != nil {
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interpolated[i].DNS.Servers = taskEnv.ParseAndReplace(interpolated[i].DNS.Servers)
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interpolated[i].DNS.Searches = taskEnv.ParseAndReplace(interpolated[i].DNS.Searches)
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interpolated[i].DNS.Options = taskEnv.ParseAndReplace(interpolated[i].DNS.Options)
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}
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if interpolated[i].CNI != nil {
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for k, v := range interpolated[i].CNI.Args {
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interpolated[i].CNI.Args[k] = taskEnv.ReplaceEnv(v)
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}
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}
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}
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return interpolated
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}
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