bd454a4c6f
* client: improve group service stanza interpolation and check_restart support Interpolation can now be done on group service stanzas. Note that some task runtime specific information that was previously available when the service was registered poststart of a task is no longer available. The check_restart stanza for checks defined on group services will now properly restart the allocation upon check failures if configured.
65 lines
2 KiB
Go
65 lines
2 KiB
Go
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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// InterpolateServices returns an interpolated copy of services and checks with
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// values from the task's environment.
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func InterpolateServices(taskEnv *TaskEnv, services []*structs.Service) []*structs.Service {
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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 || len(services) == 0 {
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return nil
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}
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interpolated := make([]*structs.Service, len(services))
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for i, origService := range services {
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// Create a copy as we need to reinterpolate every time the
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// environment changes
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service := origService.Copy()
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for _, check := range service.Checks {
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check.Name = taskEnv.ReplaceEnv(check.Name)
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check.Type = taskEnv.ReplaceEnv(check.Type)
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check.Command = taskEnv.ReplaceEnv(check.Command)
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check.Args = taskEnv.ParseAndReplace(check.Args)
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check.Path = taskEnv.ReplaceEnv(check.Path)
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check.Protocol = taskEnv.ReplaceEnv(check.Protocol)
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check.PortLabel = taskEnv.ReplaceEnv(check.PortLabel)
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check.InitialStatus = taskEnv.ReplaceEnv(check.InitialStatus)
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check.Method = taskEnv.ReplaceEnv(check.Method)
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check.GRPCService = taskEnv.ReplaceEnv(check.GRPCService)
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if len(check.Header) > 0 {
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header := make(map[string][]string, len(check.Header))
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for k, vs := range check.Header {
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newVals := make([]string, len(vs))
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for i, v := range vs {
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newVals[i] = taskEnv.ReplaceEnv(v)
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}
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header[taskEnv.ReplaceEnv(k)] = newVals
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}
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check.Header = header
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}
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}
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service.Name = taskEnv.ReplaceEnv(service.Name)
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service.PortLabel = taskEnv.ReplaceEnv(service.PortLabel)
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service.Tags = taskEnv.ParseAndReplace(service.Tags)
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service.CanaryTags = taskEnv.ParseAndReplace(service.CanaryTags)
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if len(service.Meta) > 0 {
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meta := make(map[string]string, len(service.Meta))
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for k, v := range service.Meta {
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meta[k] = taskEnv.ReplaceEnv(v)
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}
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service.Meta = meta
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}
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interpolated[i] = service
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}
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return interpolated
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}
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