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engine.go
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package acsengine
import (
"bytes"
"compress/gzip"
"encoding/base64"
"encoding/json"
"errors"
"fmt"
"hash/fnv"
"math/rand"
"regexp"
"strings"
"text/template"
"github.com/Azure/acs-engine/pkg/api"
"github.com/ghodss/yaml"
)
const (
kubernetesMasterCustomDataYaml = "kubernetesmastercustomdata.yml"
kubernetesMasterCustomScript = "kubernetesmastercustomscript.sh"
kubernetesAgentCustomDataYaml = "kubernetesagentcustomdata.yml"
kubeConfigJSON = "kubeconfig.json"
kubernetesWindowsAgentCustomDataPS1 = "kuberneteswindowssetup.ps1"
)
const (
dcosCustomData173 = "dcoscustomdata173.t"
dcosCustomData184 = "dcoscustomdata184.t"
dcosCustomData187 = "dcoscustomdata187.t"
dcosCustomData188 = "dcoscustomdata188.t"
dcosCustomData190 = "dcoscustomdata190.t"
dcosProvision = "dcosprovision.sh"
)
const (
swarmProvision = "configure-swarm-cluster.sh"
swarmWindowsProvision = "Install-ContainerHost-And-Join-Swarm.ps1"
swarmModeProvision = "configure-swarmmode-cluster.sh"
swarmModeWindowsProvision = "Join-SwarmMode-cluster.ps1"
)
const (
agentOutputs = "agentoutputs.t"
agentParams = "agentparams.t"
classicParams = "classicparams.t"
dcosAgentResourcesVMAS = "dcosagentresourcesvmas.t"
dcosAgentResourcesVMSS = "dcosagentresourcesvmss.t"
dcosAgentVars = "dcosagentvars.t"
dcosBaseFile = "dcosbase.t"
dcosParams = "dcosparams.t"
dcosMasterResources = "dcosmasterresources.t"
dcosMasterVars = "dcosmastervars.t"
kubernetesBaseFile = "kubernetesbase.t"
kubernetesAgentResourcesVMAS = "kubernetesagentresourcesvmas.t"
kubernetesAgentVars = "kubernetesagentvars.t"
kubernetesMasterResources = "kubernetesmasterresources.t"
kubernetesMasterVars = "kubernetesmastervars.t"
kubernetesParams = "kubernetesparams.t"
kubernetesWinAgentVars = "kuberneteswinagentresourcesvmas.t"
kubernetesKubeletService = "kuberneteskubelet.service"
masterOutputs = "masteroutputs.t"
masterParams = "masterparams.t"
swarmBaseFile = "swarmbase.t"
swarmAgentResourcesVMAS = "swarmagentresourcesvmas.t"
swarmAgentResourcesVMSS = "swarmagentresourcesvmss.t"
swarmAgentResourcesClassic = "swarmagentresourcesclassic.t"
swarmAgentVars = "swarmagentvars.t"
swarmMasterResources = "swarmmasterresources.t"
swarmMasterVars = "swarmmastervars.t"
swarmWinAgentResourcesVMAS = "swarmwinagentresourcesvmas.t"
swarmWinAgentResourcesVMSS = "swarmwinagentresourcesvmss.t"
windowsParams = "windowsparams.t"
)
const (
azurePublicCloud = "AzurePublicCloud"
azureChinaCloud = "AzureChinaCloud"
azureGermanCloud = "AzureGermanCloud"
azureUSGovernmentCloud = "AzureUSGovernmentCloud"
)
var kubernetesManifestYamls = map[string]string{
"MASTER_KUBERNETES_SCHEDULER_B64_GZIP_STR": "kubernetesmaster-kube-scheduler.yaml",
"MASTER_KUBERNETES_CONTROLLER_MANAGER_B64_GZIP_STR": "kubernetesmaster-kube-controller-manager.yaml",
"MASTER_KUBERNETES_APISERVER_B64_GZIP_STR": "kubernetesmaster-kube-apiserver.yaml",
"MASTER_KUBERNETES_ADDON_MANAGER_B64_GZIP_STR": "kubernetesmaster-kube-addon-manager.yaml",
}
var kubernetesAritfacts = map[string]string{
"MASTER_PROVISION_B64_GZIP_STR": kubernetesMasterCustomScript,
"KUBELET_SERVICE_B64_GZIP_STR": kubernetesKubeletService,
}
var kubernetesAddonYamls = map[string]string{
"MASTER_ADDON_HEAPSTER_DEPLOYMENT_B64_GZIP_STR": "kubernetesmasteraddons-heapster-deployment.yaml",
"MASTER_ADDON_HEAPSTER_SERVICE_B64_GZIP_STR": "kubernetesmasteraddons-heapster-service.yaml",
"MASTER_ADDON_KUBE_DNS_DEPLOYMENT_B64_GZIP_STR": "kubernetesmasteraddons-kube-dns-deployment.yaml",
"MASTER_ADDON_KUBE_DNS_SERVICE_B64_GZIP_STR": "kubernetesmasteraddons-kube-dns-service.yaml",
"MASTER_ADDON_KUBE_PROXY_DAEMONSET_B64_GZIP_STR": "kubernetesmasteraddons-kube-proxy-daemonset.yaml",
"MASTER_ADDON_KUBERNETES_DASHBOARD_DEPLOYMENT_B64_GZIP_STR": "kubernetesmasteraddons-kubernetes-dashboard-deployment.yaml",
"MASTER_ADDON_KUBERNETES_DASHBOARD_SERVICE_B64_GZIP_STR": "kubernetesmasteraddons-kubernetes-dashboard-service.yaml",
"MASTER_ADDON_DEFAULT_STORAGE_CLASS_B64_GZIP_STR": "kubernetesmasteraddons-default-storage-class.yaml",
}
var calicoAddonYamls = map[string]string{
"MASTER_ADDON_CALICO_CONFIGMAP_B64_GZIP_STR": "kubernetesmasteraddons-calico-configmap.yaml",
"MASTER_ADDON_CALICO_DAEMONSET_B64_GZIP_STR": "kubernetesmasteraddons-calico-daemonset.yaml",
}
var commonTemplateFiles = []string{agentOutputs, agentParams, classicParams, masterOutputs, masterParams, windowsParams}
var dcosTemplateFiles = []string{dcosAgentResourcesVMAS, dcosAgentResourcesVMSS, dcosAgentVars, dcosBaseFile, dcosMasterResources, dcosMasterVars, dcosParams}
var kubernetesTemplateFiles = []string{kubernetesBaseFile, kubernetesAgentResourcesVMAS, kubernetesAgentVars, kubernetesMasterResources, kubernetesMasterVars, kubernetesParams, kubernetesWinAgentVars}
var swarmTemplateFiles = []string{swarmBaseFile, swarmAgentResourcesVMAS, swarmAgentVars, swarmAgentResourcesVMSS, swarmAgentResourcesClassic, swarmBaseFile, swarmMasterResources, swarmMasterVars, swarmWinAgentResourcesVMAS, swarmWinAgentResourcesVMSS}
var swarmModeTemplateFiles = []string{swarmBaseFile, swarmAgentResourcesVMAS, swarmAgentVars, swarmAgentResourcesVMSS, swarmAgentResourcesClassic, swarmBaseFile, swarmMasterResources, swarmMasterVars, swarmWinAgentResourcesVMAS, swarmWinAgentResourcesVMSS}
/**
The following parameters could be either a plain text, or referenced to a secret in a keyvault:
- apiServerCertificate
- apiServerPrivateKey
- caCertificate
- clientCertificate
- clientPrivateKey
- kubeConfigCertificate
- kubeConfigPrivateKey
- servicePrincipalClientSecret
To refer to a keyvault secret, the value of the parameter in the api model file should be formatted as:
"<PARAMETER>": "/subscriptions/<SUB_ID>/resourceGroups/<RG_NAME>/providers/Microsoft.KeyVault/vaults/<KV_NAME>/secrets/<NAME>[/<VERSION>]"
where:
<SUB_ID> is the subscription ID of the keyvault
<RG_NAME> is the resource group of the keyvault
<KV_NAME> is the name of the keyvault
<NAME> is the name of the secret.
<VERSION> (optional) is the version of the secret (default: the latest version)
This will generate a reference block in the parameters file:
"reference": {
"keyVault": {
"id": "/subscriptions/<SUB_ID>/resourceGroups/<RG_NAME>/providers/Microsoft.KeyVault/vaults/<KV_NAME>"
},
"secretName": "<NAME>"
"secretVersion": "<VERSION>"
}
**/
type KeyVaultID struct {
ID string `json:"id"`
}
type KeyVaultRef struct {
KeyVault KeyVaultID `json:"keyVault"`
SecretName string `json:"secretName"`
SecretVersion string `json:"secretVersion,omitempty"`
}
var keyvaultSecretPath_re *regexp.Regexp
func init() {
keyvaultSecretPath_re = regexp.MustCompile(`^(/subscriptions/\S+/resourceGroups/\S+/providers/Microsoft.KeyVault/vaults/\S+)/secrets/([^/\s]+)(/(\S+))?$`)
}
func (t *TemplateGenerator) verifyFiles() error {
allFiles := append(commonTemplateFiles, dcosTemplateFiles...)
allFiles = append(allFiles, kubernetesTemplateFiles...)
allFiles = append(allFiles, swarmTemplateFiles...)
for _, file := range allFiles {
if _, err := Asset(file); err != nil {
return fmt.Errorf("template file %s does not exist", file)
}
}
return nil
}
// TemplateGenerator represents the object that performs the template generation.
type TemplateGenerator struct {
ClassicMode bool
}
// InitializeTemplateGenerator creates a new template generator object
func InitializeTemplateGenerator(classicMode bool) (*TemplateGenerator, error) {
t := &TemplateGenerator{
ClassicMode: classicMode,
}
if err := t.verifyFiles(); err != nil {
return nil, err
}
return t, nil
}
// GenerateTemplate generates the template from the API Model
func (t *TemplateGenerator) GenerateTemplate(containerService *api.ContainerService) (templateRaw string, parametersRaw string, certsGenerated bool, err error) {
// named return values are used in order to set err in case of a panic
templateRaw = ""
parametersRaw = ""
certsGenerated = false
err = nil
var templ *template.Template
properties := containerService.Properties
if certsGenerated, err = SetPropertiesDefaults(containerService); err != nil {
return templateRaw, parametersRaw, certsGenerated, err
}
templ = template.New("acs template").Funcs(t.getTemplateFuncMap(containerService))
files, baseFile, e := prepareTemplateFiles(properties)
if e != nil {
return "", "", false, e
}
for _, file := range files {
bytes, e := Asset(file)
if e != nil {
err = fmt.Errorf("Error reading file %s, Error: %s", file, e.Error())
return templateRaw, parametersRaw, certsGenerated, err
}
if _, err = templ.New(file).Parse(string(bytes)); err != nil {
return templateRaw, parametersRaw, certsGenerated, err
}
}
// template generation may have panics in the called functions. This catches those panics
// and ensures the panic is returned as an error
defer func() {
if r := recover(); r != nil {
err = fmt.Errorf("%v", r)
// invalidate the template and the parameters
templateRaw = ""
parametersRaw = ""
}
}()
var b bytes.Buffer
if err = templ.ExecuteTemplate(&b, baseFile, properties); err != nil {
return templateRaw, parametersRaw, certsGenerated, err
}
templateRaw = b.String()
var parametersMap map[string]interface{}
if parametersMap, err = getParameters(containerService, t.ClassicMode); err != nil {
return templateRaw, parametersRaw, certsGenerated, err
}
var parameterBytes []byte
if parameterBytes, err = json.Marshal(parametersMap); err != nil {
return templateRaw, parametersRaw, certsGenerated, err
}
parametersRaw = string(parameterBytes)
return templateRaw, parametersRaw, certsGenerated, err
}
// GenerateClusterID creates a unique 8 string cluster ID
func GenerateClusterID(properties *api.Properties) string {
uniqueNameSuffixSize := 8
// the name suffix uniquely identifies the cluster and is generated off a hash
// from the master dns name
h := fnv.New64a()
h.Write([]byte(properties.MasterProfile.DNSPrefix))
rand.Seed(int64(h.Sum64()))
return fmt.Sprintf("%08d", rand.Uint32())[:uniqueNameSuffixSize]
}
// GenerateKubeConfig returns a JSON string representing the KubeConfig
func GenerateKubeConfig(properties *api.Properties, location string) (string, error) {
b, err := Asset(kubeConfigJSON)
if err != nil {
return "", fmt.Errorf("error reading kube config template file %s: %s", kubeConfigJSON, err.Error())
}
kubeconfig := string(b)
// variable replacement
kubeconfig = strings.Replace(kubeconfig, "{{WrapAsVerbatim \"variables('caCertificate')\"}}", base64.StdEncoding.EncodeToString([]byte(properties.CertificateProfile.CaCertificate)), -1)
kubeconfig = strings.Replace(kubeconfig, "{{WrapAsVerbatim \"reference(concat('Microsoft.Network/publicIPAddresses/', variables('masterPublicIPAddressName'))).dnsSettings.fqdn\"}}", FormatAzureProdFQDN(properties.MasterProfile.DNSPrefix, location), -1)
kubeconfig = strings.Replace(kubeconfig, "{{WrapAsVariable \"resourceGroup\"}}", properties.MasterProfile.DNSPrefix, -1)
kubeconfig = strings.Replace(kubeconfig, "{{WrapAsVerbatim \"variables('kubeConfigCertificate')\"}}", base64.StdEncoding.EncodeToString([]byte(properties.CertificateProfile.KubeConfigCertificate)), -1)
kubeconfig = strings.Replace(kubeconfig, "{{WrapAsVerbatim \"variables('kubeConfigPrivateKey')\"}}", base64.StdEncoding.EncodeToString([]byte(properties.CertificateProfile.KubeConfigPrivateKey)), -1)
return kubeconfig, nil
}
func prepareTemplateFiles(properties *api.Properties) ([]string, string, error) {
var files []string
var baseFile string
if properties.OrchestratorProfile.OrchestratorType == api.DCOS {
files = append(commonTemplateFiles, dcosTemplateFiles...)
baseFile = dcosBaseFile
} else if properties.OrchestratorProfile.OrchestratorType == api.Swarm {
files = append(commonTemplateFiles, swarmTemplateFiles...)
baseFile = swarmBaseFile
} else if properties.OrchestratorProfile.OrchestratorType == api.Kubernetes {
files = append(commonTemplateFiles, kubernetesTemplateFiles...)
baseFile = kubernetesBaseFile
} else if properties.OrchestratorProfile.OrchestratorType == api.SwarmMode {
files = append(commonTemplateFiles, swarmModeTemplateFiles...)
baseFile = swarmBaseFile
} else {
return nil, "", fmt.Errorf("orchestrator '%s' is unsupported", properties.OrchestratorProfile.OrchestratorType)
}
return files, baseFile, nil
}
//GetCloudSpecConfig returns the kubenernetes container images url configurations based on the deploy target environment
//for example: if the target is the public azure, then the default container image url should be gcrio.azureedge.net/google_container/...
//if the target is azure china, then the default container image should be mirror.azure.cn:5000/google_container/...
func GetCloudSpecConfig(location string) AzureEnvironmentSpecConfig {
switch GetCloudTargetEnv(location) {
case azureChinaCloud:
return AzureChinaCloudSpec
//TODO - add cloud specs for germany and usgov
default:
return AzureCloudSpec
}
}
func GetCloudTargetEnv(location string) string {
loc := strings.ToLower(strings.Join(strings.Fields(location), ""))
switch {
case loc == "chinaeast" || loc == "chinanorth":
return azureChinaCloud
case loc == "germanynortheast" || loc == "germanycentral":
return azureGermanCloud
case strings.HasPrefix(loc, "usgov") || strings.HasPrefix(loc, "usdod"):
return azureUSGovernmentCloud
default:
return azurePublicCloud
}
}
func getParameters(cs *api.ContainerService, isClassicMode bool) (map[string]interface{}, error) {
properties := cs.Properties
location := cs.Location
parametersMap := map[string]interface{}{}
// Master Parameters
addValue(parametersMap, "location", location)
addValue(parametersMap, "targetEnvironment", GetCloudTargetEnv(location))
addValue(parametersMap, "linuxAdminUsername", properties.LinuxProfile.AdminUsername)
addValue(parametersMap, "masterEndpointDNSNamePrefix", properties.MasterProfile.DNSPrefix)
if properties.MasterProfile.IsCustomVNET() {
addValue(parametersMap, "masterVnetSubnetID", properties.MasterProfile.VnetSubnetID)
} else {
addValue(parametersMap, "masterSubnet", properties.MasterProfile.Subnet)
}
addValue(parametersMap, "firstConsecutiveStaticIP", properties.MasterProfile.FirstConsecutiveStaticIP)
addValue(parametersMap, "masterVMSize", properties.MasterProfile.VMSize)
if isClassicMode {
addValue(parametersMap, "masterCount", properties.MasterProfile.Count)
}
addValue(parametersMap, "sshRSAPublicKey", properties.LinuxProfile.SSH.PublicKeys[0].KeyData)
for i, s := range properties.LinuxProfile.Secrets {
addValue(parametersMap, fmt.Sprintf("linuxKeyVaultID%d", i), s.SourceVault.ID)
for j, c := range s.VaultCertificates {
addValue(parametersMap, fmt.Sprintf("linuxKeyVaultID%dCertificateURL%d", i, j), c.CertificateURL)
}
}
cloudSpecConfig := GetCloudSpecConfig(location)
// Kubernetes Parameters
if properties.OrchestratorProfile.OrchestratorType == api.Kubernetes {
KubernetesVersion := properties.OrchestratorProfile.OrchestratorVersion
addSecret(parametersMap, "apiServerCertificate", properties.CertificateProfile.APIServerCertificate, true)
addSecret(parametersMap, "apiServerPrivateKey", properties.CertificateProfile.APIServerPrivateKey, true)
addSecret(parametersMap, "caCertificate", properties.CertificateProfile.CaCertificate, true)
addSecret(parametersMap, "clientCertificate", properties.CertificateProfile.ClientCertificate, true)
addSecret(parametersMap, "clientPrivateKey", properties.CertificateProfile.ClientPrivateKey, true)
addSecret(parametersMap, "kubeConfigCertificate", properties.CertificateProfile.KubeConfigCertificate, true)
addSecret(parametersMap, "kubeConfigPrivateKey", properties.CertificateProfile.KubeConfigPrivateKey, true)
addValue(parametersMap, "dockerEngineDownloadRepo", cloudSpecConfig.DockerSpecConfig.DockerEngineRepo)
addValue(parametersMap, "kubernetesHyperkubeSpec", properties.OrchestratorProfile.KubernetesConfig.KubernetesImageBase+KubeImages[KubernetesVersion]["hyperkube"])
addValue(parametersMap, "kubernetesAddonManagerSpec", cloudSpecConfig.KubernetesSpecConfig.KubernetesImageBase+KubeImages[KubernetesVersion]["addonmanager"])
addValue(parametersMap, "kubernetesAddonResizerSpec", cloudSpecConfig.KubernetesSpecConfig.KubernetesImageBase+KubeImages[KubernetesVersion]["addonresizer"])
addValue(parametersMap, "kubernetesDashboardSpec", cloudSpecConfig.KubernetesSpecConfig.KubernetesImageBase+KubeImages[KubernetesVersion]["dashboard"])
addValue(parametersMap, "kubernetesDNSMasqSpec", cloudSpecConfig.KubernetesSpecConfig.KubernetesImageBase+KubeImages[KubernetesVersion]["dnsmasq"])
addValue(parametersMap, "kubernetesExecHealthzSpec", cloudSpecConfig.KubernetesSpecConfig.KubernetesImageBase+KubeImages[KubernetesVersion]["exechealthz"])
addValue(parametersMap, "kubernetesHeapsterSpec", cloudSpecConfig.KubernetesSpecConfig.KubernetesImageBase+KubeImages[KubernetesVersion]["heapster"])
addValue(parametersMap, "kubernetesKubeDNSSpec", cloudSpecConfig.KubernetesSpecConfig.KubernetesImageBase+KubeImages[KubernetesVersion]["dns"])
addValue(parametersMap, "kubernetesPodInfraContainerSpec", cloudSpecConfig.KubernetesSpecConfig.KubernetesImageBase+KubeImages[KubernetesVersion]["pause"])
addValue(parametersMap, "kubeClusterCidr", properties.OrchestratorProfile.KubernetesConfig.ClusterSubnet)
addValue(parametersMap, "networkPolicy", properties.OrchestratorProfile.KubernetesConfig.NetworkPolicy)
addValue(parametersMap, "servicePrincipalClientId", properties.ServicePrincipalProfile.ClientID)
addSecret(parametersMap, "servicePrincipalClientSecret", properties.ServicePrincipalProfile.Secret, false)
}
if strings.HasPrefix(string(properties.OrchestratorProfile.OrchestratorType), string(api.DCOS)) {
dcosBootstrapURL := cloudSpecConfig.DCOSSpecConfig.DCOS188_BootstrapDownloadURL
switch properties.OrchestratorProfile.OrchestratorType {
case api.DCOS:
switch properties.OrchestratorProfile.OrchestratorVersion {
case api.DCOS173:
dcosBootstrapURL = cloudSpecConfig.DCOSSpecConfig.DCOS173_BootstrapDownloadURL
case api.DCOS184:
dcosBootstrapURL = cloudSpecConfig.DCOSSpecConfig.DCOS184_BootstrapDownloadURL
case api.DCOS187:
dcosBootstrapURL = cloudSpecConfig.DCOSSpecConfig.DCOS187_BootstrapDownloadURL
case api.DCOS188:
dcosBootstrapURL = cloudSpecConfig.DCOSSpecConfig.DCOS188_BootstrapDownloadURL
case api.DCOS190:
dcosBootstrapURL = cloudSpecConfig.DCOSSpecConfig.DCOS190_BootstrapDownloadURL
}
}
addValue(parametersMap, "dcosBootstrapURL", dcosBootstrapURL)
}
// Agent parameters
for _, agentProfile := range properties.AgentPoolProfiles {
addValue(parametersMap, fmt.Sprintf("%sCount", agentProfile.Name), agentProfile.Count)
addValue(parametersMap, fmt.Sprintf("%sVMSize", agentProfile.Name), agentProfile.VMSize)
if agentProfile.IsCustomVNET() {
addValue(parametersMap, fmt.Sprintf("%sVnetSubnetID", agentProfile.Name), agentProfile.VnetSubnetID)
} else {
addValue(parametersMap, fmt.Sprintf("%sSubnet", agentProfile.Name), agentProfile.Subnet)
}
if len(agentProfile.Ports) > 0 {
addValue(parametersMap, fmt.Sprintf("%sEndpointDNSNamePrefix", agentProfile.Name), agentProfile.DNSPrefix)
}
}
// Windows parameters
if properties.HasWindows() {
addValue(parametersMap, "windowsAdminUsername", properties.WindowsProfile.AdminUsername)
addSecret(parametersMap, "windowsAdminPassword", properties.WindowsProfile.AdminPassword, false)
if properties.OrchestratorProfile.OrchestratorType == api.Kubernetes {
KubernetesVersion := properties.OrchestratorProfile.OrchestratorVersion
addValue(parametersMap, "kubeBinariesSASURL", cloudSpecConfig.KubernetesSpecConfig.KubeBinariesSASURLBase+KubeImages[KubernetesVersion]["windowszip"])
addValue(parametersMap, "kubeBinariesVersion", KubernetesVersion)
}
for i, s := range properties.WindowsProfile.Secrets {
addValue(parametersMap, fmt.Sprintf("windowsKeyVaultID%d", i), s.SourceVault.ID)
for j, c := range s.VaultCertificates {
addValue(parametersMap, fmt.Sprintf("windowsKeyVaultID%dCertificateURL%d", i, j), c.CertificateURL)
addValue(parametersMap, fmt.Sprintf("windowsKeyVaultID%dCertificateStore%d", i, j), c.CertificateStore)
}
}
}
return parametersMap, nil
}
func addValue(m map[string]interface{}, k string, v interface{}) {
m[k] = map[string]interface{}{
"value": v,
}
}
func addSecret(m map[string]interface{}, k string, v interface{}, encode bool) {
str, ok := v.(string)
if !ok {
addValue(m, k, v)
return
}
parts := keyvaultSecretPath_re.FindStringSubmatch(str)
if parts == nil || len(parts) != 5 {
if encode {
addValue(m, k, base64.StdEncoding.EncodeToString([]byte(str)))
} else {
addValue(m, k, str)
}
return
}
m[k] = map[string]interface{}{
"reference": &KeyVaultRef{
KeyVault: KeyVaultID{
ID: parts[1],
},
SecretName: parts[2],
SecretVersion: parts[4],
},
}
}
// https://stackoverflow.com/a/18411978
func VersionOrdinal(version api.OrchestratorVersion) string {
// ISO/IEC 14651:2011
const maxByte = 1<<8 - 1
vo := make([]byte, 0, len(version)+8)
j := -1
for i := 0; i < len(version); i++ {
b := version[i]
if '0' > b || b > '9' {
vo = append(vo, b)
j = -1
continue
}
if j == -1 {
vo = append(vo, 0x00)
j = len(vo) - 1
}
if vo[j] == 1 && vo[j+1] == '0' {
vo[j+1] = b
continue
}
if vo[j]+1 > maxByte {
panic("VersionOrdinal: invalid version")
}
vo = append(vo, b)
vo[j]++
}
return string(vo)
}
// getTemplateFuncMap returns all functions used in template generation
func (t *TemplateGenerator) getTemplateFuncMap(cs *api.ContainerService) map[string]interface{} {
return template.FuncMap{
"IsDCOS173": func() bool {
return cs.Properties.OrchestratorProfile.OrchestratorType == api.DCOS &&
cs.Properties.OrchestratorProfile.OrchestratorVersion == api.DCOS173
},
"IsDCOS184": func() bool {
return cs.Properties.OrchestratorProfile.OrchestratorType == api.DCOS &&
cs.Properties.OrchestratorProfile.OrchestratorVersion == api.DCOS184
},
"IsDCOS187": func() bool {
return cs.Properties.OrchestratorProfile.OrchestratorType == api.DCOS &&
cs.Properties.OrchestratorProfile.OrchestratorVersion == api.DCOS187
},
"IsDCOS188": func() bool {
return cs.Properties.OrchestratorProfile.OrchestratorType == api.DCOS &&
cs.Properties.OrchestratorProfile.OrchestratorVersion == api.DCOS188
},
"IsDCOS190": func() bool {
return cs.Properties.OrchestratorProfile.OrchestratorType == api.DCOS &&
cs.Properties.OrchestratorProfile.OrchestratorVersion == api.DCOS190
},
"IsKubernetesVersionGe": func(version string) bool {
targetVersion := api.OrchestratorVersion(version)
targetVersionOrdinal := VersionOrdinal(targetVersion)
orchestratorVersionOrdinal := VersionOrdinal(cs.Properties.OrchestratorProfile.OrchestratorVersion)
return cs.Properties.OrchestratorProfile.OrchestratorType == api.Kubernetes &&
orchestratorVersionOrdinal >= targetVersionOrdinal
},
"RequiresFakeAgentOutput": func() bool {
return cs.Properties.OrchestratorProfile.OrchestratorType == api.Kubernetes
},
"IsSwarmMode": func() bool {
return cs.Properties.OrchestratorProfile.IsSwarmMode()
},
"IsKubernetes": func() bool {
return cs.Properties.OrchestratorProfile.IsKubernetes()
},
"IsPublic": func(ports []int) bool {
return len(ports) > 0
},
"IsVNETIntegrated": func() bool {
return cs.Properties.OrchestratorProfile.IsVNETIntegrated()
},
"GetVNETSubnetDependencies": func() string {
return getVNETSubnetDependencies(cs.Properties)
},
"GetLBRules": func(name string, ports []int) string {
return getLBRules(name, ports)
},
"GetProbes": func(ports []int) string {
return getProbes(ports)
},
"GetSecurityRules": func(ports []int) string {
return getSecurityRules(ports)
},
"GetUniqueNameSuffix": func() string {
return GenerateClusterID(cs.Properties)
},
"GetVNETAddressPrefixes": func() string {
return getVNETAddressPrefixes(cs.Properties)
},
"GetVNETSubnets": func(addNSG bool) string {
return getVNETSubnets(cs.Properties, addNSG)
},
"GetDataDisks": func(profile *api.AgentPoolProfile) string {
return getDataDisks(profile)
},
"GetDCOSMasterCustomData": func() string {
masterProvisionScript := getDCOSMasterProvisionScript()
masterAttributeContents := getDCOSMasterCustomNodeLabels()
str := getSingleLineDCOSCustomData(cs.Properties.OrchestratorProfile.OrchestratorType, cs.Properties.OrchestratorProfile.OrchestratorVersion, cs.Properties.MasterProfile.Count, masterProvisionScript, masterAttributeContents)
return fmt.Sprintf("\"customData\": \"[base64(concat('#cloud-config\\n\\n', '%s'))]\",", str)
},
"GetDCOSAgentCustomData": func(profile *api.AgentPoolProfile) string {
agentProvisionScript := getDCOSAgentProvisionScript(profile)
attributeContents := getDCOSAgentCustomNodeLabels(profile)
str := getSingleLineDCOSCustomData(cs.Properties.OrchestratorProfile.OrchestratorType, cs.Properties.OrchestratorProfile.OrchestratorVersion, cs.Properties.MasterProfile.Count, agentProvisionScript, attributeContents)
return fmt.Sprintf("\"customData\": \"[base64(concat('#cloud-config\\n\\n', '%s'))]\",", str)
},
"GetMasterAllowedSizes": func() string {
if t.ClassicMode {
return GetClassicAllowedSizes()
} else if cs.Properties.OrchestratorProfile.OrchestratorType == api.DCOS {
return GetDCOSMasterAllowedSizes()
}
return GetMasterAgentAllowedSizes()
},
"GetAgentAllowedSizes": func() string {
if t.ClassicMode {
return GetClassicAllowedSizes()
} else if cs.Properties.OrchestratorProfile.OrchestratorType == api.Kubernetes {
return GetKubernetesAgentAllowedSizes()
}
return GetMasterAgentAllowedSizes()
},
"GetSizeMap": func() string {
if t.ClassicMode {
return GetClassicSizeMap()
}
return GetSizeMap()
},
"GetClassicMode": func() bool {
return t.ClassicMode
},
"Base64": func(s string) string {
return base64.StdEncoding.EncodeToString([]byte(s))
},
"GetDefaultInternalLbStaticIPOffset": func() int {
return DefaultInternalLbStaticIPOffset
},
"GetKubernetesMasterCustomScript": func() string {
return getBase64CustomScript(kubernetesMasterCustomScript)
},
"GetKubernetesMasterCustomData": func(profile *api.Properties) string {
str, e := t.getSingleLineForTemplate(kubernetesMasterCustomDataYaml, cs, profile)
if e != nil {
return ""
}
for placeholder, filename := range kubernetesManifestYamls {
manifestTextContents := getBase64CustomScript(filename)
str = strings.Replace(str, placeholder, manifestTextContents, -1)
}
// add artifacts and addons
for placeholder, filename := range kubernetesAritfacts {
addonTextContents := getBase64CustomScript(filename)
str = strings.Replace(str, placeholder, addonTextContents, -1)
}
for placeholder, filename := range kubernetesAddonYamls {
addonTextContents := getBase64CustomScript(filename)
str = strings.Replace(str, placeholder, addonTextContents, -1)
}
// add calico manifests
if profile.OrchestratorProfile.KubernetesConfig.NetworkPolicy == "calico" {
for placeholder, filename := range calicoAddonYamls {
addonTextContents := getBase64CustomScript(filename)
str = strings.Replace(str, placeholder, addonTextContents, -1)
}
}
// return the custom data
return fmt.Sprintf("\"customData\": \"[base64(concat('%s'))]\",", str)
},
"GetKubernetesAgentCustomData": func(profile *api.AgentPoolProfile) string {
str, e := t.getSingleLineForTemplate(kubernetesAgentCustomDataYaml, cs, profile)
if e != nil {
return ""
}
// add artifacts
for placeholder, filename := range kubernetesAritfacts {
addonTextContents := getBase64CustomScript(filename)
str = strings.Replace(str, placeholder, addonTextContents, -1)
}
return fmt.Sprintf("\"customData\": \"[base64(concat('%s'))]\",", str)
},
"GetKubernetesB64Provision": func() string {
return getBase64CustomScript(kubernetesMasterCustomScript)
},
"GetMasterSwarmCustomData": func() string {
files := []string{swarmProvision}
str := buildYamlFileWithWriteFiles(files)
str = escapeSingleLine(str)
return fmt.Sprintf("\"customData\": \"[base64('%s')]\",", str)
},
"GetAgentSwarmCustomData": func() string {
files := []string{swarmProvision}
str := buildYamlFileWithWriteFiles(files)
str = escapeSingleLine(str)
return fmt.Sprintf("\"customData\": \"[base64(concat('%s',variables('agentRunCmdFile'),variables('agentRunCmd')))]\",", str)
},
"GetLocation": func() string {
return cs.Location
},
"GetWinAgentSwarmCustomData": func() string {
str := getBase64CustomScript(swarmWindowsProvision)
return fmt.Sprintf("\"customData\": \"%s\"", str)
},
"GetWinAgentSwarmModeCustomData": func() string {
str := getBase64CustomScript(swarmModeWindowsProvision)
return fmt.Sprintf("\"customData\": \"%s\"", str)
},
"GetKubernetesWindowsAgentCustomData": func(profile *api.AgentPoolProfile) string {
str, e := t.getSingleLineForTemplate(kubernetesWindowsAgentCustomDataPS1, cs, profile)
if e != nil {
return ""
}
return fmt.Sprintf("\"customData\": \"[base64(concat('%s'))]\",", str)
},
"GetMasterSwarmModeCustomData": func() string {
files := []string{swarmModeProvision}
str := buildYamlFileWithWriteFiles(files)
str = escapeSingleLine(str)
return fmt.Sprintf("\"customData\": \"[base64('%s')]\",", str)
},
"GetAgentSwarmModeCustomData": func() string {
files := []string{swarmModeProvision}
str := buildYamlFileWithWriteFiles(files)
str = escapeSingleLine(str)
return fmt.Sprintf("\"customData\": \"[base64(concat('%s',variables('agentRunCmdFile'),variables('agentRunCmd')))]\",", str)
},
"GetKubernetesSubnets": func() string {
return getKubernetesSubnets(cs.Properties)
},
"GetKubernetesPodStartIndex": func() string {
return fmt.Sprintf("%d", getKubernetesPodStartIndex(cs.Properties))
},
"WrapAsVariable": func(s string) string {
return fmt.Sprintf("',variables('%s'),'", s)
},
"WrapAsVerbatim": func(s string) string {
return fmt.Sprintf("',%s,'", s)
},
"AnyAgentHasDisks": func() bool {
for _, agentProfile := range cs.Properties.AgentPoolProfiles {
if agentProfile.HasDisks() {
return true
}
}
return false
},
"AnyAgentUsesAvailablilitySets": func() bool {
for _, agentProfile := range cs.Properties.AgentPoolProfiles {
if agentProfile.IsAvailabilitySets() {
return true
}
}
return false
},
"HasLinuxAgents": func() bool {
for _, agentProfile := range cs.Properties.AgentPoolProfiles {
if agentProfile.IsLinux() {
return true
}
}
return false
},
"HasLinuxSecrets": func() bool {
return cs.Properties.LinuxProfile.HasSecrets()
},
"HasWindowsSecrets": func() bool {
return cs.Properties.WindowsProfile.HasSecrets()
},
// inspired by http://stackoverflow.com/questions/18276173/calling-a-template-with-several-pipeline-parameters/18276968#18276968
"dict": func(values ...interface{}) (map[string]interface{}, error) {
if len(values)%2 != 0 {
return nil, errors.New("invalid dict call")
}
dict := make(map[string]interface{}, len(values)/2)
for i := 0; i < len(values); i += 2 {
key, ok := values[i].(string)
if !ok {
return nil, errors.New("dict keys must be strings")
}
dict[key] = values[i+1]
}
return dict, nil
},
"loop": func(min, max int) []int {
var s []int
for i := min; i <= max; i++ {
s = append(s, i)
}
return s
},
}
}
func getPackageGUID(orchestratorType api.OrchestratorType, orchestratorVersion api.OrchestratorVersion, masterCount int) string {
if orchestratorType == api.DCOS && orchestratorVersion == api.DCOS190 {
switch masterCount {
case 1:
return "bcc883b7a3191412cf41824bdee06c1142187a0b"
case 3:
return "dcff7e24c0c1827bebeb7f1a806f558054481b33"
case 5:
return "b41bfa84137a6374b2ff5eb1655364d7302bd257"
}
} else if orchestratorType == api.DCOS && orchestratorVersion == api.DCOS188 {
switch masterCount {
case 1:
return "441385ce2f5942df7e29075c12fb38fa5e92cbba"
case 3:
return "b1cd359287504efb780257bd12cc3a63704e42d4"
case 5:
return "d9b61156dfcc9383e014851529738aa550ef57d9"
}
} else if orchestratorType == api.DCOS && orchestratorVersion == api.DCOS187 {
switch masterCount {
case 1:
return "556978041b6ed059cc0f474501083e35ea5645b8"
case 3:
return "1eb387eda0403c7fd6f1dacf66e530be74c3c3de"
case 5:
return "2e38627207dc70f46296b9649f9ee2a43500ec15"
}
} else if orchestratorType == api.DCOS && orchestratorVersion == api.DCOS184 {
switch masterCount {
case 1:
return "5ac6a7d060584c58c704e1f625627a591ecbde4e"
case 3:
return "42bd1d74e9a2b23836bd78919c716c20b98d5a0e"
case 5:
return "97947a91e2c024ed4f043bfcdad49da9418d3095"
}
} else if orchestratorType == api.DCOS && orchestratorVersion == api.DCOS173 {
switch masterCount {
case 1:
return "6b604c1331c2b8b52bb23d1ea8a8d17e0f2b7428"
case 3:
return "6af5097e7956962a3d4318d28fbf280a47305485"
case 5:
return "376e07e0dbad2af3da2c03bc92bb07e84b3dafd5"
}
}
return ""
}
func getDCOSCustomDataPublicIPStr(orchestratorType api.OrchestratorType, masterCount int) string {
if orchestratorType == api.DCOS {
var buf bytes.Buffer
for i := 0; i < masterCount; i++ {
buf.WriteString(fmt.Sprintf("reference(variables('masterVMNic')[%d]).ipConfigurations[0].properties.privateIPAddress,", i))
if i < (masterCount - 1) {
buf.WriteString(`'\\\", \\\"', `)
}
}
return buf.String()
}
return ""
}
func getDCOSMasterCustomNodeLabels() string {
// return empty string for DCOS since no attribtutes needed on master
return ""
}
func getDCOSAgentCustomNodeLabels(profile *api.AgentPoolProfile) string {
var buf bytes.Buffer
buf.WriteString("")
if len(profile.CustomNodeLabels) > 0 {
buf.WriteString("MESOS_ATTRIBUTES=")
for k, v := range profile.CustomNodeLabels {
buf.WriteString(fmt.Sprintf("%s:%s;", k, v))
}
}
return buf.String()
}
func getVNETAddressPrefixes(properties *api.Properties) string {
visitedSubnets := make(map[string]bool)
var buf bytes.Buffer
buf.WriteString(`"[variables('masterSubnet')]"`)
visitedSubnets[properties.MasterProfile.Subnet] = true
for _, profile := range properties.AgentPoolProfiles {
if _, ok := visitedSubnets[profile.Subnet]; !ok {
buf.WriteString(fmt.Sprintf(",\n \"[variables('%sSubnet')]\"", profile.Name))
}
}
return buf.String()
}
func getVNETSubnetDependencies(properties *api.Properties) string {
agentString := ` "[concat('Microsoft.Network/networkSecurityGroups/', variables('%sNSGName'))]"`
var buf bytes.Buffer
for index, agentProfile := range properties.AgentPoolProfiles {
if index > 0 {
buf.WriteString(",\n")
}
buf.WriteString(fmt.Sprintf(agentString, agentProfile.Name))
}
return buf.String()
}
func getVNETSubnets(properties *api.Properties, addNSG bool) string {
masterString := `{
"name": "[variables('masterSubnetName')]",
"properties": {
"addressPrefix": "[variables('masterSubnet')]"
}
}`
agentString := ` {
"name": "[variables('%sSubnetName')]",
"properties": {
"addressPrefix": "[variables('%sSubnet')]"
}
}`
agentStringNSG := ` {
"name": "[variables('%sSubnetName')]",
"properties": {
"addressPrefix": "[variables('%sSubnet')]",
"networkSecurityGroup": {
"id": "[resourceId('Microsoft.Network/networkSecurityGroups', variables('%sNSGName'))]"
}
}
}`
var buf bytes.Buffer
buf.WriteString(masterString)
for _, agentProfile := range properties.AgentPoolProfiles {
buf.WriteString(",\n")
if addNSG {
buf.WriteString(fmt.Sprintf(agentStringNSG, agentProfile.Name, agentProfile.Name, agentProfile.Name))
} else {
buf.WriteString(fmt.Sprintf(agentString, agentProfile.Name, agentProfile.Name))
}
}
return buf.String()
}
func getLBRule(name string, port int) string {
return fmt.Sprintf(` {
"name": "LBRule%d",
"properties": {
"backendAddressPool": {
"id": "[concat(variables('%sLbID'), '/backendAddressPools/', variables('%sLbBackendPoolName'))]"
},
"backendPort": %d,
"enableFloatingIP": false,
"frontendIPConfiguration": {
"id": "[variables('%sLbIPConfigID')]"
},
"frontendPort": %d,
"idleTimeoutInMinutes": 5,
"loadDistribution": "Default",
"probe": {
"id": "[concat(variables('%sLbID'),'/probes/tcp%dProbe')]"
},
"protocol": "tcp"
}
}`, port, name, name, port, name, port, name, port)
}
func getLBRules(name string, ports []int) string {
var buf bytes.Buffer
for index, port := range ports {
if index > 0 {
buf.WriteString(",\n")
}
buf.WriteString(getLBRule(name, port))
}
return buf.String()
}
func getProbe(port int) string {
return fmt.Sprintf(` {
"name": "tcp%dProbe",
"properties": {
"intervalInSeconds": "5",
"numberOfProbes": "2",
"port": %d,
"protocol": "tcp"
}
}`, port, port)
}
func getProbes(ports []int) string {
var buf bytes.Buffer
for index, port := range ports {
if index > 0 {
buf.WriteString(",\n")
}
buf.WriteString(getProbe(port))
}
return buf.String()
}
func getSecurityRule(port int, portIndex int) string {
// BaseLBPriority specifies the base lb priority.
BaseLBPriority := 200
return fmt.Sprintf(` {
"name": "Allow_%d",
"properties": {
"access": "Allow",
"description": "Allow traffic from the Internet to port %d",
"destinationAddressPrefix": "*",
"destinationPortRange": "%d",
"direction": "Inbound",
"priority": %d,
"protocol": "*",
"sourceAddressPrefix": "Internet",
"sourcePortRange": "*"
}