2019-11-18 18:04:01 +00:00
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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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// 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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2020-11-16 16:41:19 +00:00
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// Create a copy as we need to re-interpolate every time the
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// environment changes.
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2019-11-18 18:04:01 +00:00
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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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2020-11-16 16:41:19 +00:00
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check.Header = interpolateMapStringSliceString(taskEnv, check.Header)
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2019-11-18 18:04:01 +00:00
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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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2020-11-16 16:41:19 +00:00
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service.Meta = interpolateMapStringString(taskEnv, service.Meta)
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service.CanaryMeta = interpolateMapStringString(taskEnv, service.CanaryMeta)
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2020-12-09 17:44:07 +00:00
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interpolateConnect(taskEnv, service.Connect)
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2019-11-18 18:04:01 +00:00
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2020-11-16 16:41:19 +00:00
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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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func interpolateMapStringSliceString(taskEnv *TaskEnv, orig map[string][]string) map[string][]string {
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if len(orig) == 0 {
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return nil
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}
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m := make(map[string][]string, len(orig))
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for k, vs := range orig {
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m[taskEnv.ReplaceEnv(k)] = taskEnv.ParseAndReplace(vs)
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}
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return m
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}
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func interpolateMapStringString(taskEnv *TaskEnv, orig map[string]string) map[string]string {
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if len(orig) == 0 {
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return nil
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}
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m := make(map[string]string, len(orig))
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for k, v := range orig {
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m[taskEnv.ReplaceEnv(k)] = taskEnv.ReplaceEnv(v)
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}
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return m
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}
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func interpolateMapStringInterface(taskEnv *TaskEnv, orig map[string]interface{}) map[string]interface{} {
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if len(orig) == 0 {
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return nil
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}
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m := make(map[string]interface{}, len(orig))
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for k, v := range orig {
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m[taskEnv.ReplaceEnv(k)] = v
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}
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return m
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}
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2020-12-09 17:44:07 +00:00
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func interpolateConnect(taskEnv *TaskEnv, connect *structs.ConsulConnect) {
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if connect == nil {
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return
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2020-11-16 16:41:19 +00:00
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}
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2020-12-09 17:44:07 +00:00
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interpolateConnectSidecarService(taskEnv, connect.SidecarService)
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interpolateConnectSidecarTask(taskEnv, connect.SidecarTask)
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if connect.Gateway != nil {
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interpolateConnectGatewayProxy(taskEnv, connect.Gateway.Proxy)
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interpolateConnectGatewayIngress(taskEnv, connect.Gateway.Ingress)
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2020-11-16 16:41:19 +00:00
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}
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}
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func interpolateConnectGatewayProxy(taskEnv *TaskEnv, proxy *structs.ConsulGatewayProxy) {
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if proxy == nil {
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return
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}
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m := make(map[string]*structs.ConsulGatewayBindAddress, len(proxy.EnvoyGatewayBindAddresses))
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for k, v := range proxy.EnvoyGatewayBindAddresses {
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m[taskEnv.ReplaceEnv(k)] = &structs.ConsulGatewayBindAddress{
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Address: taskEnv.ReplaceEnv(v.Address),
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Port: v.Port,
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}
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}
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proxy.EnvoyGatewayBindAddresses = m
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proxy.Config = interpolateMapStringInterface(taskEnv, proxy.Config)
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}
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func interpolateConnectGatewayIngress(taskEnv *TaskEnv, ingress *structs.ConsulIngressConfigEntry) {
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if ingress == nil {
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return
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}
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for _, listener := range ingress.Listeners {
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listener.Protocol = taskEnv.ReplaceEnv(listener.Protocol)
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for _, service := range listener.Services {
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service.Name = taskEnv.ReplaceEnv(service.Name)
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service.Hosts = taskEnv.ParseAndReplace(service.Hosts)
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2019-11-18 18:04:01 +00:00
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}
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2020-11-16 16:41:19 +00:00
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}
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}
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func interpolateConnectSidecarService(taskEnv *TaskEnv, sidecar *structs.ConsulSidecarService) {
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if sidecar == nil {
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return
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}
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2019-11-18 18:04:01 +00:00
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2020-11-16 16:41:19 +00:00
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sidecar.Port = taskEnv.ReplaceEnv(sidecar.Port)
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sidecar.Tags = taskEnv.ParseAndReplace(sidecar.Tags)
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if sidecar.Proxy != nil {
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sidecar.Proxy.LocalServiceAddress = taskEnv.ReplaceEnv(sidecar.Proxy.LocalServiceAddress)
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if sidecar.Proxy.Expose != nil {
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for i := 0; i < len(sidecar.Proxy.Expose.Paths); i++ {
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sidecar.Proxy.Expose.Paths[i].Protocol = taskEnv.ReplaceEnv(sidecar.Proxy.Expose.Paths[i].Protocol)
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sidecar.Proxy.Expose.Paths[i].ListenerPort = taskEnv.ReplaceEnv(sidecar.Proxy.Expose.Paths[i].ListenerPort)
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sidecar.Proxy.Expose.Paths[i].Path = taskEnv.ReplaceEnv(sidecar.Proxy.Expose.Paths[i].Path)
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2020-10-15 06:08:06 +00:00
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}
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}
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2020-11-16 16:41:19 +00:00
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for i := 0; i < len(sidecar.Proxy.Upstreams); i++ {
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sidecar.Proxy.Upstreams[i].Datacenter = taskEnv.ReplaceEnv(sidecar.Proxy.Upstreams[i].Datacenter)
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sidecar.Proxy.Upstreams[i].DestinationName = taskEnv.ReplaceEnv(sidecar.Proxy.Upstreams[i].DestinationName)
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}
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sidecar.Proxy.Config = interpolateMapStringInterface(taskEnv, sidecar.Proxy.Config)
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}
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}
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2020-10-15 06:08:06 +00:00
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2020-11-16 16:41:19 +00:00
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func interpolateConnectSidecarTask(taskEnv *TaskEnv, task *structs.SidecarTask) {
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if task == nil {
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return
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2019-11-18 18:04:01 +00:00
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}
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2020-11-16 16:41:19 +00:00
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task.Driver = taskEnv.ReplaceEnv(task.Driver)
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task.Config = interpolateMapStringInterface(taskEnv, task.Config)
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task.Env = interpolateMapStringString(taskEnv, task.Env)
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task.KillSignal = taskEnv.ReplaceEnv(task.KillSignal)
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task.Meta = interpolateMapStringString(taskEnv, task.Meta)
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interpolateTaskResources(taskEnv, task.Resources)
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task.User = taskEnv.ReplaceEnv(task.User)
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}
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func interpolateTaskResources(taskEnv *TaskEnv, resources *structs.Resources) {
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if resources == nil {
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return
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}
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for i := 0; i < len(resources.Devices); i++ {
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resources.Devices[i].Name = taskEnv.ReplaceEnv(resources.Devices[i].Name)
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// do not interpolate constraints & affinities
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}
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for i := 0; i < len(resources.Networks); i++ {
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resources.Networks[i].CIDR = taskEnv.ReplaceEnv(resources.Networks[i].CIDR)
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resources.Networks[i].Device = taskEnv.ReplaceEnv(resources.Networks[i].Device)
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resources.Networks[i].IP = taskEnv.ReplaceEnv(resources.Networks[i].IP)
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resources.Networks[i].Mode = taskEnv.ReplaceEnv(resources.Networks[i].Mode)
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if resources.Networks[i].DNS != nil {
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resources.Networks[i].DNS.Options = taskEnv.ParseAndReplace(resources.Networks[i].DNS.Options)
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resources.Networks[i].DNS.Searches = taskEnv.ParseAndReplace(resources.Networks[i].DNS.Searches)
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resources.Networks[i].DNS.Servers = taskEnv.ParseAndReplace(resources.Networks[i].DNS.Servers)
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}
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for p := 0; p < len(resources.Networks[i].DynamicPorts); p++ {
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resources.Networks[i].DynamicPorts[p].HostNetwork = taskEnv.ReplaceEnv(resources.Networks[i].DynamicPorts[p].HostNetwork)
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resources.Networks[i].DynamicPorts[p].Label = taskEnv.ReplaceEnv(resources.Networks[i].DynamicPorts[p].Label)
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}
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for p := 0; p < len(resources.Networks[i].ReservedPorts); p++ {
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resources.Networks[i].ReservedPorts[p].HostNetwork = taskEnv.ReplaceEnv(resources.Networks[i].ReservedPorts[p].HostNetwork)
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resources.Networks[i].ReservedPorts[p].Label = taskEnv.ReplaceEnv(resources.Networks[i].ReservedPorts[p].Label)
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}
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}
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2019-11-18 18:04:01 +00:00
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}
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