clouds

package
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 Go to latest Published: Feb 27, 2024 License: Apache-2.0 Imports: 14 Imported by: 0

Documentation

Overview

package clouds provides a parser for OpenStack credentials stored in a clouds.yaml file.

Example use: 

ctx := context.Background()
ao, eo, tlsConfig, err := clouds.Parse()
if err != nil {
	panic(err)
}

providerClient, err := config.NewProviderClient(ctx, ao, config.WithTLSConfig(tlsConfig))
if err != nil {
	panic(err)
}

networkClient, err := openstack.NewNetworkV2(providerClient, eo)
if err != nil {
	panic(err)
}

Index

Examples

Constants

This section is empty.

Variables

This section is empty.

Functions

func Parse 

func Parse(opts ...ParseOption) (gophercloud.AuthOptions, gophercloud.EndpointOpts, *tls.Config, error)

Parse fetches a clouds.yaml file from disk and returns the parsed credentials.

By default this function mimics the behaviour of python-openstackclient, which is:

  • if the environment variable `OS_CLIENT_CONFIG_FILE` is set and points to a clouds.yaml, use that location as the only search location for `clouds.yaml` and `secure.yaml`;
  • otherwise, the search locations for `clouds.yaml` and `secure.yaml` are: 1. the current working directory (on Linux: `./`) 2. the directory `openstack` under the standatd user config location for the operating system (on Linux: `${XDG_CONFIG_HOME:-$HOME/.config}/openstack/`) 3. on Linux, `/etc/openstack/`

Once `clouds.yaml` is found in a search location, the same location is used to search for `secure.yaml`.

Like in python-openstackclient, relative paths in the `clouds.yaml` section `cacert` are interpreted as relative the the current directory, and not to the `clouds.yaml` location.

Search locations, as well as individual `clouds.yaml` properties, can be overwritten with functional options.

Types

type AuthInfo 

type AuthInfo struct {
	// AuthURL is the keystone/identity endpoint URL.
	AuthURL string `yaml:"auth_url,omitempty" json:"auth_url,omitempty"`

	// Token is a pre-generated authentication token.
	Token string `yaml:"token,omitempty" json:"token,omitempty"`

	// Username is the username of the user.
	Username string `yaml:"username,omitempty" json:"username,omitempty"`

	// UserID is the unique ID of a user.
	UserID string `yaml:"user_id,omitempty" json:"user_id,omitempty"`

	// Password is the password of the user.
	Password string `yaml:"password,omitempty" json:"password,omitempty"`

	// Application Credential ID to login with.
	ApplicationCredentialID string `yaml:"application_credential_id,omitempty" json:"application_credential_id,omitempty"`

	// Application Credential name to login with.
	ApplicationCredentialName string `yaml:"application_credential_name,omitempty" json:"application_credential_name,omitempty"`

	// Application Credential secret to login with.
	ApplicationCredentialSecret string `yaml:"application_credential_secret,omitempty" json:"application_credential_secret,omitempty"`

	// SystemScope is a system information to scope to.
	SystemScope string `yaml:"system_scope,omitempty" json:"system_scope,omitempty"`

	// ProjectName is the common/human-readable name of a project.
	// Users can be scoped to a project.
	// ProjectName on its own is not enough to ensure a unique scope. It must
	// also be combined with either a ProjectDomainName or ProjectDomainID.
	// ProjectName cannot be combined with ProjectID in a scope.
	ProjectName string `yaml:"project_name,omitempty" json:"project_name,omitempty"`

	// ProjectID is the unique ID of a project.
	// It can be used to scope a user to a specific project.
	ProjectID string `yaml:"project_id,omitempty" json:"project_id,omitempty"`

	// UserDomainName is the name of the domain where a user resides.
	// It is used to identify the source domain of a user.
	UserDomainName string `yaml:"user_domain_name,omitempty" json:"user_domain_name,omitempty"`

	// UserDomainID is the unique ID of the domain where a user resides.
	// It is used to identify the source domain of a user.
	UserDomainID string `yaml:"user_domain_id,omitempty" json:"user_domain_id,omitempty"`

	// ProjectDomainName is the name of the domain where a project resides.
	// It is used to identify the source domain of a project.
	// ProjectDomainName can be used in addition to a ProjectName when scoping
	// a user to a specific project.
	ProjectDomainName string `yaml:"project_domain_name,omitempty" json:"project_domain_name,omitempty"`

	// ProjectDomainID is the name of the domain where a project resides.
	// It is used to identify the source domain of a project.
	// ProjectDomainID can be used in addition to a ProjectName when scoping
	// a user to a specific project.
	ProjectDomainID string `yaml:"project_domain_id,omitempty" json:"project_domain_id,omitempty"`

	// DomainName is the name of a domain which can be used to identify the
	// source domain of either a user or a project.
	// If UserDomainName and ProjectDomainName are not specified, then DomainName
	// is used as a default choice.
	// It can also be used be used to specify a domain-only scope.
	DomainName string `yaml:"domain_name,omitempty" json:"domain_name,omitempty"`

	// DomainID is the unique ID of a domain which can be used to identify the
	// source domain of eitehr a user or a project.
	// If UserDomainID and ProjectDomainID are not specified, then DomainID is
	// used as a default choice.
	// It can also be used be used to specify a domain-only scope.
	DomainID string `yaml:"domain_id,omitempty" json:"domain_id,omitempty"`

	// DefaultDomain is the domain ID to fall back on if no other domain has
	// been specified and a domain is required for scope.
	DefaultDomain string `yaml:"default_domain,omitempty" json:"default_domain,omitempty"`

	// AllowReauth should be set to true if you grant permission for Gophercloud to
	// cache your credentials in memory, and to allow Gophercloud to attempt to
	// re-authenticate automatically if/when your token expires.  If you set it to
	// false, it will not cache these settings, but re-authentication will not be
	// possible.  This setting defaults to false.
	AllowReauth bool `yaml:"allow_reauth,omitempty" json:"allow_reauth,omitempty"`
}

AuthInfo represents the auth section of a cloud entry or auth options entered explicitly in ClientOpts.

type AuthType 

type AuthType string

AuthType respresents a valid method of authentication. 

const (
	// AuthPassword defines an unknown version of the password
	AuthPassword AuthType = "password"
	// AuthToken defined an unknown version of the token
	AuthToken AuthType = "token"

	// AuthV2Password defines version 2 of the password
	AuthV2Password AuthType = "v2password"
	// AuthV2Token defines version 2 of the token
	AuthV2Token AuthType = "v2token"

	// AuthV3Password defines version 3 of the password
	AuthV3Password AuthType = "v3password"
	// AuthV3Token defines version 3 of the token
	AuthV3Token AuthType = "v3token"

	// AuthV3ApplicationCredential defines version 3 of the application credential
	AuthV3ApplicationCredential AuthType = "v3applicationcredential"
)

type Cloud 

type Cloud struct {
	Cloud      string    `yaml:"cloud,omitempty" json:"cloud,omitempty"`
	Profile    string    `yaml:"profile,omitempty" json:"profile,omitempty"`
	AuthInfo   *AuthInfo `yaml:"auth,omitempty" json:"auth,omitempty"`
	AuthType   AuthType  `yaml:"auth_type,omitempty" json:"auth_type,omitempty"`
	RegionName string    `yaml:"region_name,omitempty" json:"region_name,omitempty"`
	Regions    []Region  `yaml:"regions,omitempty" json:"regions,omitempty"`

	// EndpointType and Interface both specify whether to use the public, internal,
	// or admin interface of a service. They should be considered synonymous, but
	// EndpointType will take precedence when both are specified.
	EndpointType string `yaml:"endpoint_type,omitempty" json:"endpoint_type,omitempty"`
	Interface    string `yaml:"interface,omitempty" json:"interface,omitempty"`

	// API Version overrides.
	IdentityAPIVersion string `yaml:"identity_api_version,omitempty" json:"identity_api_version,omitempty"`
	VolumeAPIVersion   string `yaml:"volume_api_version,omitempty" json:"volume_api_version,omitempty"`

	// Verify whether or not SSL API requests should be verified.
	Verify *bool `yaml:"verify,omitempty" json:"verify,omitempty"`

	// CACertFile a path to a CA Cert bundle that can be used as part of
	// verifying SSL API requests.
	CACertFile string `yaml:"cacert,omitempty" json:"cacert,omitempty"`

	// ClientCertFile a path to a client certificate to use as part of the SSL
	// transaction.
	ClientCertFile string `yaml:"cert,omitempty" json:"cert,omitempty"`

	// ClientKeyFile a path to a client key to use as part of the SSL
	// transaction.
	ClientKeyFile string `yaml:"key,omitempty" json:"key,omitempty"`
}

Cloud represents an entry in a clouds.yaml/public-clouds.yaml/secure.yaml file.

type Clouds 

type Clouds struct {
	Clouds map[string]Cloud `yaml:"clouds" json:"clouds"`
}

Clouds represents a collection of Cloud entries in a clouds.yaml file. The format of clouds.yaml is documented at https://docs.openstack.org/os-client-config/latest/user/configuration.html.

type ParseOption 

type ParseOption = func(*cloudOpts)

ParseOption one of parse configuration returned by With* modifier

func WithApplicationCredentialID 

func WithApplicationCredentialID(applicationCredentialID string) ParseOption

func WithApplicationCredentialName 

func WithApplicationCredentialName(applicationCredentialName string) ParseOption

func WithApplicationCredentialSecret 

func WithApplicationCredentialSecret(applicationCredentialSecret string) ParseOption

func WithCACertPath 

func WithCACertPath(caCertPath string) ParseOption

func WithClientCertPath 

func WithClientCertPath(clientCertPath string) ParseOption

func WithClientKeyPath 

func WithClientKeyPath(clientKeyPath string) ParseOption

func WithCloudName 

func WithCloudName(osCloud string) ParseOption

WithCloudName allows to override the environment variable `OS_CLOUD`.

Example 
package main

import (
	"fmt"
	"strings"

	"github.com/gophercloud/gophercloud/openstack/config/clouds"
)

func main() {
	const exampleClouds = `clouds:
  openstack:
    auth:
      auth_url: https://example.com:13000`

	ao, _, _, err := clouds.Parse(
		clouds.WithCloudsYAML(strings.NewReader(exampleClouds)),
		clouds.WithCloudName("openstack"),
	)
	if err != nil {
		panic(err)
	}

	fmt.Println(ao.IdentityEndpoint)
}

Output:

https://example.com:13000

func WithCloudsYAML 

func WithCloudsYAML(clouds io.Reader) ParseOption

WithCloudsYAML is a functional option that lets you pass a clouds.yaml file as an io.Reader interface. When this option is passed, FromCloudsYaml will not attempt to fetch any file from the file system. To add a secure.yaml, use in conjunction with WithSecureYAML.

func WithDomainID 

func WithDomainID(domainID string) ParseOption

func WithDomainName 

func WithDomainName(domainName string) ParseOption

func WithEndpointType 

func WithEndpointType(endpointType string) ParseOption

WithRegion allows to override the endpoint type set in clouds.yaml or in the environment variable `OS_INTERFACE`.

func WithIdentityEndpoint 

func WithIdentityEndpoint(authURL string) ParseOption

func WithInsecure 

func WithInsecure(insecure bool) ParseOption

func WithLocations 

func WithLocations(locations ...string) ParseOption

WithLocations is a functional option that sets the search locations for the clouds.yaml file (and its optional companion secure.yaml). Each location is a file path pointing to a possible `clouds.yaml`.

func WithPassword 

func WithPassword(password string) ParseOption

func WithProjectID 

func WithProjectID(projectID string) ParseOption

func WithProjectName 

func WithProjectName(projectName string) ParseOption

func WithRegion 

func WithRegion(region string) ParseOption

WithRegion allows to override the region set in clouds.yaml or in the environment variable `OS_REGION_NAME`

Example 
package main

import (
	"fmt"
	"strings"

	"github.com/gophercloud/gophercloud/openstack/config/clouds"
)

func main() {
	const exampleClouds = `clouds:
  openstack:
    auth:
      auth_url: https://example.com:13000`

	_, eo, _, err := clouds.Parse(
		clouds.WithCloudsYAML(strings.NewReader(exampleClouds)),
		clouds.WithCloudName("openstack"),
		clouds.WithRegion("mars"),
	)
	if err != nil {
		panic(err)
	}

	fmt.Println(eo.Region)
}

Output:

mars

func WithScope 

func WithScope(scope *gophercloud.AuthScope) ParseOption

func WithSecureYAML 

func WithSecureYAML(secure io.Reader) ParseOption

WithSecureYAML is a functional option that lets you pass a secure.yaml file as an io.Reader interface, to complement the clouds.yaml that is either fetched from the filesystem, or passed with WithCloudsYAML.

func WithToken 

func WithToken(token string) ParseOption

func WithUserID 

func WithUserID(userID string) ParseOption
Example 
package main

import (
	"fmt"
	"strings"

	"github.com/gophercloud/gophercloud/openstack/config/clouds"
)

func main() {
	const exampleClouds = `clouds:
  openstack:
    auth:
      auth_url: https://example.com:13000`

	ao, _, _, err := clouds.Parse(
		clouds.WithCloudsYAML(strings.NewReader(exampleClouds)),
		clouds.WithCloudName("openstack"),
		clouds.WithUsername("Kris"),
	)
	if err != nil {
		panic(err)
	}

	fmt.Println(ao.Username)
}

Output:

Kris

func WithUsername 

func WithUsername(username string) ParseOption

type Region 

type Region struct {
	Name   string `yaml:"name,omitempty" json:"name,omitempty"`
	Values Cloud  `yaml:"values,omitempty" json:"values,omitempty"`
}

Region represents a region included as part of cloud in clouds.yaml According to Python-based openstacksdk, this can be either a struct (as defined) or a plain string. Custom unmarshallers handle both cases.

func (*Region) UnmarshalJSON 

func (r *Region) UnmarshalJSON(data []byte) error

UnmarshalJSON handles either a plain string acting as the Name property or a struct, mimicking the Python-based openstacksdk.

func (*Region) UnmarshalYAML 

func (r *Region) UnmarshalYAML(unmarshal func(interface{}) error) error

UnmarshalYAML handles either a plain string acting as the Name property or a struct, mimicking the Python-based openstacksdk.

Source Files

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