/
config.go
452 lines (367 loc) · 12.6 KB
/
config.go
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package auth
import (
"context"
"fmt"
"log"
"net/http"
"os"
"github.com/gophercloud/gophercloud"
"github.com/gophercloud/gophercloud/openstack"
"github.com/gophercloud/gophercloud/openstack/objectstorage/v1/swauth"
osClient "github.com/gophercloud/utils/client"
"github.com/gophercloud/utils/internal"
"github.com/gophercloud/utils/openstack/clientconfig"
"github.com/gophercloud/utils/terraform/mutexkv"
)
type Config struct {
CACertFile string
ClientCertFile string
ClientKeyFile string
Cloud string
DefaultDomain string
DomainID string
DomainName string
EndpointOverrides map[string]interface{}
EndpointType string
IdentityEndpoint string
Insecure *bool
Password string
ProjectDomainName string
ProjectDomainID string
Region string
Swauth bool
TenantID string
TenantName string
Token string
UserDomainName string
UserDomainID string
Username string
UserID string
ApplicationCredentialID string
ApplicationCredentialName string
ApplicationCredentialSecret string
UseOctavia bool
MaxRetries int
DisableNoCacheHeader bool
Context context.Context
DelayedAuth bool
AllowReauth bool
OsClient *gophercloud.ProviderClient
AuthOpts *gophercloud.AuthOptions
authenticated bool
authFailed error
swClient *gophercloud.ServiceClient
swAuthFailed error
TerraformVersion string
SDKVersion string
EnableLogger bool
*mutexkv.MutexKV
}
// LoadAndValidate performs the authentication and initial configuration
// of an OpenStack Provider Client. This sets up the HTTP client and
// authenticates to an OpenStack cloud.
//
// Individual Service Clients are created later in this file.
func (c *Config) LoadAndValidate() error {
// Make sure at least one of auth_url or cloud was specified.
if c.IdentityEndpoint == "" && c.Cloud == "" {
return fmt.Errorf("One of 'auth_url' or 'cloud' must be specified")
}
validEndpoint := false
validEndpoints := []string{
"internal", "internalURL",
"admin", "adminURL",
"public", "publicURL",
"",
}
for _, endpoint := range validEndpoints {
if c.EndpointType == endpoint {
validEndpoint = true
}
}
if !validEndpoint {
return fmt.Errorf("Invalid endpoint type provided")
}
if c.MaxRetries < 0 {
return fmt.Errorf("max_retries should be a positive value")
}
clientOpts := new(clientconfig.ClientOpts)
// If a cloud entry was given, base AuthOptions on a clouds.yaml file.
if c.Cloud != "" {
clientOpts.Cloud = c.Cloud
// Passing region allows GetCloudFromYAML to apply per-region overrides
clientOpts.RegionName = c.Region
cloud, err := clientconfig.GetCloudFromYAML(clientOpts)
if err != nil {
return err
}
if c.Region == "" && cloud.RegionName != "" {
c.Region = cloud.RegionName
}
if c.CACertFile == "" && cloud.CACertFile != "" {
c.CACertFile = cloud.CACertFile
}
if c.ClientCertFile == "" && cloud.ClientCertFile != "" {
c.ClientCertFile = cloud.ClientCertFile
}
if c.ClientKeyFile == "" && cloud.ClientKeyFile != "" {
c.ClientKeyFile = cloud.ClientKeyFile
}
if c.Insecure == nil && cloud.Verify != nil {
v := (!*cloud.Verify)
c.Insecure = &v
}
} else {
authInfo := &clientconfig.AuthInfo{
AuthURL: c.IdentityEndpoint,
DefaultDomain: c.DefaultDomain,
DomainID: c.DomainID,
DomainName: c.DomainName,
Password: c.Password,
ProjectDomainID: c.ProjectDomainID,
ProjectDomainName: c.ProjectDomainName,
ProjectID: c.TenantID,
ProjectName: c.TenantName,
Token: c.Token,
UserDomainID: c.UserDomainID,
UserDomainName: c.UserDomainName,
Username: c.Username,
UserID: c.UserID,
ApplicationCredentialID: c.ApplicationCredentialID,
ApplicationCredentialName: c.ApplicationCredentialName,
ApplicationCredentialSecret: c.ApplicationCredentialSecret,
}
// Define System Scope if enabled
if c.AuthOpts.Scope.System {
authInfo.SystemScope = "true"
}
clientOpts.AuthInfo = authInfo
}
ao, err := clientconfig.AuthOptions(clientOpts)
if err != nil {
return err
}
log.Printf("[DEBUG] OpenStack allowReauth: %t", c.AllowReauth)
ao.AllowReauth = c.AllowReauth
client, err := openstack.NewClient(ao.IdentityEndpoint)
if err != nil {
return err
}
client.Context = c.Context
// Set UserAgent
client.UserAgent.Prepend(terraformUserAgent(c.TerraformVersion, c.SDKVersion))
config, err := internal.PrepareTLSConfig(c.CACertFile, c.ClientCertFile, c.ClientKeyFile, c.Insecure)
if err != nil {
return err
}
c.EnableLogger = enableLogging(c.EnableLogger)
var logger osClient.Logger
if c.EnableLogger {
logger = &osClient.DefaultLogger{}
}
transport := &http.Transport{Proxy: http.ProxyFromEnvironment, TLSClientConfig: config}
client.HTTPClient = http.Client{
Transport: &osClient.RoundTripper{
Rt: transport,
MaxRetries: c.MaxRetries,
Logger: logger,
},
}
if !c.DisableNoCacheHeader {
extraHeaders := map[string][]string{
"Cache-Control": {"no-cache"},
}
client.HTTPClient.Transport.(*osClient.RoundTripper).SetHeaders(extraHeaders)
}
if c.MaxRetries > 0 {
client.MaxBackoffRetries = uint(c.MaxRetries)
client.RetryBackoffFunc = osClient.RetryBackoffFunc(logger)
}
if !c.DelayedAuth && !c.Swauth {
err = openstack.Authenticate(client, *ao)
if err != nil {
return err
}
}
c.AuthOpts = ao
c.OsClient = client
return nil
}
func (c *Config) Authenticate() error {
if !c.DelayedAuth {
return nil
}
c.MutexKV.Lock("auth")
defer c.MutexKV.Unlock("auth")
if c.authFailed != nil {
return c.authFailed
}
if !c.authenticated {
if err := openstack.Authenticate(c.OsClient, *c.AuthOpts); err != nil {
c.authFailed = err
return err
}
c.authenticated = true
}
return nil
}
// DetermineEndpoint is a helper method to determine if the user wants to
// override an endpoint returned from the catalog.
func (c *Config) DetermineEndpoint(client *gophercloud.ServiceClient, service string) *gophercloud.ServiceClient {
finalEndpoint := client.ResourceBaseURL()
if v, ok := c.EndpointOverrides[service]; ok {
if endpoint, ok := v.(string); ok && endpoint != "" {
finalEndpoint = endpoint
client.Endpoint = endpoint
client.ResourceBase = ""
}
}
log.Printf("[DEBUG] OpenStack Endpoint for %s: %s", service, finalEndpoint)
return client
}
// DetermineRegion is a helper method to determine the region based on
// the user's settings.
func (c *Config) DetermineRegion(region string) string {
// If a resource-level region was not specified, and a provider-level region was set,
// use the provider-level region.
if region == "" && c.Region != "" {
region = c.Region
}
log.Printf("[DEBUG] OpenStack Region is: %s", region)
return region
}
// The following methods assist with the creation of individual Service Clients
// which interact with the various OpenStack services.
type commonCommonServiceClientInitFunc func(*gophercloud.ProviderClient, gophercloud.EndpointOpts) (*gophercloud.ServiceClient, error)
func (c *Config) CommonServiceClientInit(newClient commonCommonServiceClientInitFunc, region, service string) (*gophercloud.ServiceClient, error) {
if err := c.Authenticate(); err != nil {
return nil, err
}
client, err := newClient(c.OsClient, gophercloud.EndpointOpts{
Region: c.DetermineRegion(region),
Availability: clientconfig.GetEndpointType(c.EndpointType),
})
if err != nil {
return client, err
}
// Check if an endpoint override was specified for the volume service.
client = c.DetermineEndpoint(client, service)
return client, nil
}
func (c *Config) BlockStorageV1Client(region string) (*gophercloud.ServiceClient, error) {
return c.CommonServiceClientInit(openstack.NewBlockStorageV1, region, "volume")
}
func (c *Config) BlockStorageV2Client(region string) (*gophercloud.ServiceClient, error) {
return c.CommonServiceClientInit(openstack.NewBlockStorageV2, region, "volumev2")
}
func (c *Config) BlockStorageV3Client(region string) (*gophercloud.ServiceClient, error) {
return c.CommonServiceClientInit(openstack.NewBlockStorageV3, region, "volumev3")
}
func (c *Config) ComputeV2Client(region string) (*gophercloud.ServiceClient, error) {
return c.CommonServiceClientInit(openstack.NewComputeV2, region, "compute")
}
func (c *Config) DNSV2Client(region string) (*gophercloud.ServiceClient, error) {
return c.CommonServiceClientInit(openstack.NewDNSV2, region, "dns")
}
func (c *Config) IdentityV3Client(region string) (*gophercloud.ServiceClient, error) {
return c.CommonServiceClientInit(openstack.NewIdentityV3, region, "identity")
}
func (c *Config) ImageV2Client(region string) (*gophercloud.ServiceClient, error) {
return c.CommonServiceClientInit(openstack.NewImageServiceV2, region, "image")
}
func (c *Config) MessagingV2Client(region string) (*gophercloud.ServiceClient, error) {
if err := c.Authenticate(); err != nil {
return nil, err
}
client, err := openstack.NewMessagingV2(c.OsClient, "", gophercloud.EndpointOpts{
Region: c.DetermineRegion(region),
Availability: clientconfig.GetEndpointType(c.EndpointType),
})
if err != nil {
return client, err
}
// Check if an endpoint override was specified for the messaging service.
client = c.DetermineEndpoint(client, "message")
return client, nil
}
func (c *Config) NetworkingV2Client(region string) (*gophercloud.ServiceClient, error) {
return c.CommonServiceClientInit(openstack.NewNetworkV2, region, "network")
}
func (c *Config) ObjectStorageV1Client(region string) (*gophercloud.ServiceClient, error) {
var client *gophercloud.ServiceClient
var err error
// If Swift Authentication is being used, return a swauth client.
// Otherwise, use a Keystone-based client.
if c.Swauth {
if !c.DelayedAuth {
client, err = swauth.NewObjectStorageV1(c.OsClient, swauth.AuthOpts{
User: c.Username,
Key: c.Password,
})
if err != nil {
return nil, err
}
} else {
c.MutexKV.Lock("SwAuth")
defer c.MutexKV.Unlock("SwAuth")
if c.swAuthFailed != nil {
return nil, c.swAuthFailed
}
if c.swClient == nil {
c.swClient, err = swauth.NewObjectStorageV1(c.OsClient, swauth.AuthOpts{
User: c.Username,
Key: c.Password,
})
if err != nil {
c.swAuthFailed = err
return nil, err
}
}
client = c.swClient
}
} else {
if err := c.Authenticate(); err != nil {
return nil, err
}
client, err = openstack.NewObjectStorageV1(c.OsClient, gophercloud.EndpointOpts{
Region: c.DetermineRegion(region),
Availability: clientconfig.GetEndpointType(c.EndpointType),
})
if err != nil {
return client, err
}
}
// Check if an endpoint override was specified for the object-store service.
client = c.DetermineEndpoint(client, "object-store")
return client, nil
}
func (c *Config) OrchestrationV1Client(region string) (*gophercloud.ServiceClient, error) {
return c.CommonServiceClientInit(openstack.NewOrchestrationV1, region, "orchestration")
}
func (c *Config) LoadBalancerV2Client(region string) (*gophercloud.ServiceClient, error) {
return c.CommonServiceClientInit(openstack.NewLoadBalancerV2, region, "octavia")
}
func (c *Config) DatabaseV1Client(region string) (*gophercloud.ServiceClient, error) {
return c.CommonServiceClientInit(openstack.NewDBV1, region, "database")
}
func (c *Config) ContainerInfraV1Client(region string) (*gophercloud.ServiceClient, error) {
return c.CommonServiceClientInit(openstack.NewContainerInfraV1, region, "container-infra")
}
func (c *Config) SharedfilesystemV2Client(region string) (*gophercloud.ServiceClient, error) {
return c.CommonServiceClientInit(openstack.NewSharedFileSystemV2, region, "sharev2")
}
func (c *Config) KeyManagerV1Client(region string) (*gophercloud.ServiceClient, error) {
return c.CommonServiceClientInit(openstack.NewKeyManagerV1, region, "key-manager")
}
// A wrapper to determine if logging in gophercloud should be enabled, with a fallback
// to the OS_DEBUG environment variable when no explicit configuration is passed.
func enableLogging(enable bool) bool {
if enable {
return true
}
// if OS_DEBUG is set, log the requests and responses
if os.Getenv("OS_DEBUG") != "" {
return true
}
return false
}