/
initialize.go
315 lines (253 loc) · 9.03 KB
/
initialize.go
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package configfetchers
import (
"context"
"errors"
"fmt"
"io/ioutil"
"net/url"
"os"
"strings"
"github.com/Azure/azure-sdk-for-go/services/compute/mgmt/2019-07-01/compute"
"github.com/Azure/azure-sdk-for-go/services/network/mgmt/2019-09-01/network"
"github.com/Azure/go-autorest/autorest/azure"
"github.com/Azure/go-autorest/autorest/azure/auth"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/credentials"
"github.com/aws/aws-sdk-go/aws/session"
"github.com/aws/aws-sdk-go/service/ec2"
"github.com/pivotal-cf/om/vmlifecycle/vmmanagers"
"github.com/vmware/govmomi"
"github.com/vmware/govmomi/vim25/soap"
google "google.golang.org/api/compute/v1"
"google.golang.org/api/option"
)
//go:generate counterfeiter -o ./fakes/export_opsman_config.go --fake-name OpsmanConfigFetcherService . OpsmanConfigFetcherService
type OpsmanConfigFetcherService interface {
FetchConfig() (*vmmanagers.OpsmanConfigFilePayload, error)
}
type Credentials struct {
AWS *vmmanagers.AWSCredential
GCP *vmmanagers.GCPCredential
VSphere *VCenterCredentialsWrapper
Azure *AzureCredentialsWrapper
}
type VCenterCredentialsWrapper struct {
vmmanagers.VcenterCredential
Insecure bool
}
type AzureCredentialsWrapper struct {
vmmanagers.AzureCredential
CloudName string
}
func NewOpsmanConfigFetcher(state *vmmanagers.StateInfo, creds *Credentials) (OpsmanConfigFetcherService, error) {
err := validateState(state)
if err != nil {
return nil, err
}
switch state.IAAS {
case "aws":
err := validateAWSCreds(creds)
if err != nil {
return nil, err
}
config := &aws.Config{
Region: &creds.AWS.Region,
CredentialsChainVerboseErrors: aws.Bool(true),
}
if creds.AWS.AccessKeyId != "" && creds.AWS.SecretAccessKey != "" {
config.Credentials = credentials.NewStaticCredentials(creds.AWS.AccessKeyId, creds.AWS.SecretAccessKey, "")
}
awsSession, err := session.NewSession(config)
if err != nil {
return nil, errors.New("could not create aws session")
}
return NewAWSConfigFetcher(state, creds, ec2.New(awsSession)), nil
case "gcp":
err := validateGCPCreds(creds)
if err != nil {
return nil, err
}
ctx := context.Background()
var service *google.Service
if creds.GCP.ServiceAccount != "" {
service, err = google.NewService(ctx, option.WithCredentialsJSON([]byte(creds.GCP.ServiceAccount)))
if err != nil {
return nil, fmt.Errorf("could not create gcp client with service account json: %s", err)
}
} else {
service, err = google.NewService(ctx)
if err != nil {
return nil, fmt.Errorf("could not create gcp client with service account: %s", err)
}
}
return NewGCPConfigFetcher(state, creds, service), nil
case "vsphere":
err := validateVCenterCreds(creds)
if err != nil {
return nil, err
}
parsedURL, err := buildURL(creds)
if err != nil {
return nil, err
}
u, err := soap.ParseURL(parsedURL)
if err != nil {
return nil, fmt.Errorf("could not parse url: %s", err)
}
ctx := context.Background()
client, err := govmomi.NewClient(ctx, u, creds.VSphere.Insecure)
if err != nil {
return nil, fmt.Errorf("could not create vcenter client: %s", err)
}
return NewVSphereConfigFetcher(state, creds, client), nil
case "azure":
err := validateAzureCreds(creds)
if err != nil {
return nil, err
}
vmClient, networkClient, ipClient, imageClient, err := createAzureClients(creds)
if err != nil {
return nil, err
}
return NewAzureConfigFetcher(state, creds, vmClient, networkClient, ipClient, imageClient), nil
}
return nil, errors.New("unexpected error creating a config fetcher. Please contact Pivotal Support")
}
func createAzureClients(creds *Credentials) (AzureVMClient, AzureNetworkClient, AzureIPClient, AzureImageClient, error) {
subID := creds.Azure.SubscriptionID
settings, err := auth.GetSettingsFromEnvironment()
if err != nil {
return nil, nil, nil, nil, fmt.Errorf("could not create azure auth settings: %s", err)
}
settings.Values[auth.SubscriptionID] = subID
settings.Values[auth.TenantID] = creds.Azure.TenantID
settings.Values[auth.ClientID] = creds.Azure.ClientID
settings.Values[auth.ClientSecret] = creds.Azure.ClientSecret
settings.Environment, err = azure.EnvironmentFromName(creds.Azure.CloudName)
if err != nil {
return nil, nil, nil, nil, fmt.Errorf("could not create azure environment from name: %s", err)
}
// Switch cloud names to work with Azure cli (from azure/environments.go in sdk)
if strings.ToUpper(creds.Azure.CloudName) == "AZUREPUBLICCLOUD" {
creds.Azure.CloudName = "AzureCloud"
}
if strings.ToUpper(creds.Azure.CloudName) == "AZUREUSGOVERNMENTCLOUD" {
creds.Azure.CloudName = "AzureUSGovernment"
}
authorizer, err := settings.GetAuthorizer()
if err != nil {
return nil, nil, nil, nil, fmt.Errorf("could not create azure authorizer: %s", err)
}
vmClient := compute.NewVirtualMachinesClient(subID)
vmClient.Authorizer = authorizer
networkClient := network.NewInterfacesClient(subID)
networkClient.Authorizer = authorizer
ipClient := network.NewPublicIPAddressesClient(subID)
ipClient.Authorizer = authorizer
imageClient := compute.NewImagesClient(subID)
imageClient.Authorizer = authorizer
return vmClient, networkClient, ipClient, imageClient, nil
}
func validateState(state *vmmanagers.StateInfo) (err error) {
supportedIAASes := []string{"aws", "azure", "gcp", "openstack", "vsphere"}
var errString string
if state.IAAS == "" {
errString = "'iaas' is required in the provided state file\n"
}
if state.ID == "" {
errString = errString + "'vm_id' is required in the provided state file\n"
}
var foundIAAS bool
for _, iaas := range supportedIAASes {
if iaas == state.IAAS {
foundIAAS = true
}
}
if !foundIAAS {
errString = errString + fmt.Sprintf("IAAS: %s is not supported. Use %s\n", state.IAAS, strings.Join(supportedIAASes, "|"))
}
if errString != "" {
err = errors.New(errString)
}
return err
}
func validateAWSCreds(creds *Credentials) error {
if creds.AWS.Region == "" {
return errors.New("the required flag '--aws-region' was not specified")
}
if creds.AWS.AccessKeyId != "" && creds.AWS.SecretAccessKey == "" || creds.AWS.AccessKeyId == "" && creds.AWS.SecretAccessKey != "" {
return errors.New("both '--aws-access-key-id' and '--aws-secret-access-key' need to be specified if not using iam instance profiles")
}
return nil
}
func validateGCPCreds(creds *Credentials) (err error) {
var errs []string
if creds.GCP.Zone == "" {
errs = append(errs, "the required flag '--gcp-zone' was not specified\n")
}
if creds.GCP.Project == "" {
errs = append(errs, "the required flag '--gcp-project-id' was not specified\n")
}
if creds.GCP.ServiceAccount != "" {
if _, err := os.Stat(creds.GCP.ServiceAccount); os.IsNotExist(err) {
errs = append(errs, fmt.Sprintf("gcp-service-account-json file (%s) cannot be found", creds.GCP.ServiceAccount))
}
contents, err := ioutil.ReadFile(creds.GCP.ServiceAccount)
if err != nil {
errs = append(errs, fmt.Sprintf("could not read gcp-service-account-json file (%s): %s", creds.GCP.ServiceAccount, err))
}
creds.GCP.ServiceAccount = string(contents)
}
if len(errs) > 0 {
err = errors.New(strings.Join(errs, "\n"))
}
return err
}
func validateVCenterCreds(creds *Credentials) (err error) {
var errs []string
if creds.VSphere.URL == "" {
errs = append(errs, "the required flag '--vsphere-url' was not specified\n")
}
if creds.VSphere.Username == "" {
errs = append(errs, "the required flag '--vsphere-username' was not specified\n")
}
if creds.VSphere.Password == "" {
errs = append(errs, "the required flag '--vsphere-password' was not specified\n")
}
if len(errs) > 0 {
err = errors.New(strings.Join(errs, "\n"))
}
return err
}
func validateAzureCreds(creds *Credentials) (err error) {
var errs []string
if creds.Azure.SubscriptionID == "" {
errs = append(errs, "the required flag '--azure-subscription-id' was not specified\n")
}
if creds.Azure.TenantID == "" {
errs = append(errs, "the required flag '--azure-tenant-id' was not specified\n")
}
if creds.Azure.ClientID == "" {
errs = append(errs, "the required flag '--azure-client-id' was not specified\n")
}
if creds.Azure.ClientSecret == "" {
errs = append(errs, "the required flag '--azure-client-secret' was not specified\n")
}
if creds.Azure.ResourceGroup == "" {
errs = append(errs, "the required flag '--azure-resource-group' was not specified\n")
}
if len(errs) > 0 {
err = errors.New(strings.Join(errs, "\n"))
}
return err
}
func buildURL(creds *Credentials) (string, error) {
parsedURL, err := url.Parse(creds.VSphere.URL)
if err != nil {
return "", fmt.Errorf("the '--vsphere-url=%s' was not provided with the correct format, like https://vcenter.example.com", creds.VSphere.URL)
}
if parsedURL.Scheme == "" {
return "", fmt.Errorf("the '--vsphere-url=%s' was not supplied a protocol (http or https), like https://vcenter.example.com", creds.VSphere.URL)
}
return fmt.Sprintf("%s://%s:%s@%s/sdk", parsedURL.Scheme, url.QueryEscape(creds.VSphere.Username), url.QueryEscape(creds.VSphere.Password), parsedURL.Host), nil
}