endpoints

Documentation

Index

• func AddScheme(endpoint string, disableSSL bool) string
• func DisableSSLOption(o *Options)
• func ResolveUnknownServiceOption(o *Options)
• func StrictMatchingOption(o *Options)
• func UseDualStackOption(o *Options)
• type Endpoint
  • func (e Endpoint) ID() string
  • func (e Endpoint) ResolveEndpoint(opts ...func(*Options)) (ResolvedEndpoint, error)
  • func (e Endpoint) ServiceID() string
• type EndpointNotFoundError
• type EnumPartitions
• type Options
  • func (o *Options) Set(optFns ...func(*Options))
• type Partition
  • func (p Partition) DNSSuffix() string
  • func (p Partition) EndpointFor(service, region string, opts ...func(*Options)) (ResolvedEndpoint, error)
  • func (p Partition) ID() string
  • func (p Partition) Regions() map[string]Region
  • func (p Partition) Services() map[string]Service
• type Region
  • func (r Region) Description() string
  • func (r Region) ID() string
  • func (r Region) ResolveEndpoint(service string, opts ...func(*Options)) (ResolvedEndpoint, error)
  • func (r Region) Services() map[string]Service
• type ResolvedEndpoint
• type Resolver
• type ResolverFunc
  • func (fn ResolverFunc) EndpointFor(service, region string, opts ...func(*Options)) (ResolvedEndpoint, error)
• type Service
  • func (s Service) Endpoints() map[string]Endpoint
  • func (s Service) ID() string
  • func (s Service) Regions() map[string]Region
  • func (s Service) ResolveEndpoint(region string, opts ...func(*Options)) (ResolvedEndpoint, error)
• type UnknownEndpointError
  • func NewUnknownEndpointError(p, s, r string, known []string) UnknownEndpointError
  • func (e UnknownEndpointError) Error() string
  • func (e UnknownEndpointError) String() string
• type UnknownServiceError
  • func NewUnknownServiceError(p, s string, known []string) UnknownServiceError
  • func (e UnknownServiceError) Error() string
  • func (e UnknownServiceError) String() string

Functions

func AddScheme

func AddScheme(endpoint string, disableSSL bool) string

AddScheme adds the HTTP or HTTPS schemes to a endpoint URL if there is no scheme. If disableSSL is true HTTP will set HTTP instead of the default HTTPS.

If disableSSL is set, it will only set the URL's scheme if the URL does not contain a scheme.

func DisableSSLOption

func DisableSSLOption(o *Options)

DisableSSLOption sets the DisableSSL options. Can be used as a functional option when resolving endpoints.

func ResolveUnknownServiceOption

func ResolveUnknownServiceOption(o *Options)

ResolveUnknownServiceOption sets the ResolveUnknownService option. Can be used as a functional option when resolving endpoints.

func StrictMatchingOption

func StrictMatchingOption(o *Options)

StrictMatchingOption sets the StrictMatching option. Can be used as a functional option when resolving endpoints.

func UseDualStackOption

func UseDualStackOption(o *Options)

UseDualStackOption sets the UseDualStack option. Can be used as a functional option when resolving endpoints.

Types

type Endpoint

type Endpoint struct {
	// contains filtered or unexported fields
}

A Endpoint provides information about endpoints, and provides the ability to resolve that endpoint for the service, and the region the endpoint represents.

func (Endpoint) ID

func (e Endpoint) ID() string

ID returns the identifier for an endpoint.

func (Endpoint) ResolveEndpoint

func (e Endpoint) ResolveEndpoint(opts ...func(*Options)) (ResolvedEndpoint, error)

ResolveEndpoint resolves an endpoint from the context of a service and region the endpoint represents. See Partition.EndpointFor for usage and errors that can be returned.

func (Endpoint) ServiceID

func (e Endpoint) ServiceID() string

ServiceID returns the identifier the endpoint belongs to.

type EndpointNotFoundError

type EndpointNotFoundError struct {
	Partition string
	Service   string
	Region    string
	// contains filtered or unexported fields
}

A EndpointNotFoundError is returned when in StrictMatching mode, and the endpoint for the service and region cannot be found in any of the partitions.

type EnumPartitions

type EnumPartitions interface {
	Partitions() []Partition
}

EnumPartitions a provides a way to retrieve the underlying partitions that make up the SDK's default Resolver, or any resolver decoded from a model file.

Use this interface with DefaultResolver and DecodeModels to get the list of Partitions.

type Options

type Options struct {
	// DisableSSL forces the endpoint to be resolved as HTTP.
	// instead of HTTPS if the service supports it.
	DisableSSL bool

	// Sets the resolver to resolve the endpoint as a dualstack endpoint
	// for the service. If dualstack support for a service is not known and
	// StrictMatching is not enabled a dualstack endpoint for the service will
	// be returned. This endpoint may not be valid. If StrictMatching is
	// enabled only services that are known to support dualstack will return
	// dualstack endpoints.
	UseDualStack bool

	// Enables strict matching of services and regions resolved endpoints.
	// If the partition doesn't enumerate the exact service and region an
	// error will be returned. This option will prevent returning endpoints
	// that look valid, but may not resolve to any real endpoint.
	StrictMatching bool

	// Enables resolving a service endpoint based on the region provided if the
	// service does not exist. The service endpoint ID will be used as the service
	// domain name prefix. By default the endpoint resolver requires the service
	// to be known when resolving endpoints.
	//
	// If resolving an endpoint on the partition list the provided region will
	// be used to determine which partition's domain name pattern to the service
	// endpoint ID with. If both the service and region are unknown and resolving
	// the endpoint on partition list an UnknownEndpointError error will be returned.
	//
	// If resolving and endpoint on a partition specific resolver that partition's
	// domain name pattern will be used with the service endpoint ID. If both
	// region and service do not exist when resolving an endpoint on a specific
	// partition the partition's domain pattern will be used to combine the
	// endpoint and region together.
	//
	// This option is ignored if StrictMatching is enabled.
	ResolveUnknownService bool
}

Options provide the configuration needed to direct how the endpoints will be resolved.

func (*Options) Set

func (o *Options) Set(optFns ...func(*Options))

Set combines all of the option functions together.

type Partition

type Partition struct {
	// contains filtered or unexported fields
}

A Partition provides the ability to enumerate the partition's regions and services.

func (Partition) DNSSuffix

func (p Partition) DNSSuffix() string

DNSSuffix returns the base domain name of the partition.

func (Partition) EndpointFor

func (p Partition) EndpointFor(service, region string, opts ...func(*Options)) (ResolvedEndpoint, error)

EndpointFor attempts to resolve the endpoint based on service and region. See Options for information on configuring how the endpoint is resolved.

If the service cannot be found in the metadata the UnknownServiceError error will be returned. This validation will occur regardless if StrictMatching is enabled. To enable resolving unknown services set the "ResolveUnknownService" option to true. When StrictMatching is disabled this option allows the partition resolver to resolve a endpoint based on the service endpoint ID provided.

When resolving endpoints you can choose to enable StrictMatching. This will require the provided service and region to be known by the partition. If the endpoint cannot be strictly resolved an error will be returned. This mode is useful to ensure the endpoint resolved is valid. Without StrictMatching enabled the endpoint returned my look valid but may not work. StrictMatching requires the SDK to be updated if you want to take advantage of new regions and services expansions.

Errors that can be returned.

• UnknownServiceError
• UnknownEndpointError

func (Partition) ID

func (p Partition) ID() string

ID returns the identifier of the partition.

func (Partition) Regions

func (p Partition) Regions() map[string]Region

Regions returns a map of Regions indexed by their ID. This is useful for enumerating over the regions in a partition.

func (Partition) Services

func (p Partition) Services() map[string]Service

Services returns a map of Service indexed by their ID. This is useful for enumerating over the services in a partition.

type Region

type Region struct {
	// contains filtered or unexported fields
}

A Region provides information about a region, and ability to resolve an endpoint from the context of a region, given a service.

func (Region) Description

func (r Region) Description() string

Description returns the region's description. The region description is free text, it can be empty, and it may change between SDK releases.

func (Region) ID

func (r Region) ID() string

ID returns the region's identifier.

func (Region) ResolveEndpoint

func (r Region) ResolveEndpoint(service string, opts ...func(*Options)) (ResolvedEndpoint, error)

ResolveEndpoint resolves an endpoint from the context of the region given a service. See Partition.EndpointFor for usage and errors that can be returned.

func (Region) Services

func (r Region) Services() map[string]Service

Services returns a list of all services that are known to be in this region.

type ResolvedEndpoint

type ResolvedEndpoint struct {
	// The endpoint URL
	URL string

	// The region that should be used for signing requests.
	SigningRegion string

	// The service name that should be used for signing requests.
	SigningName string

	// States that the signing name for this endpoint was derived from metadata
	// passed in, but was not explicitly modeled.
	SigningNameDerived bool

	// The signing method that should be used for signing requests.
	SigningMethod string
}

A ResolvedEndpoint is an endpoint that has been resolved based on a partition service, and region.

type Resolver

type Resolver interface {
	EndpointFor(service, region string, opts ...func(*Options)) (ResolvedEndpoint, error)
}

A Resolver provides the interface for functionality to resolve endpoints. The build in Partition and DefaultResolver return value satisfy this interface.

type ResolverFunc

type ResolverFunc func(service, region string, opts ...func(*Options)) (ResolvedEndpoint, error)

ResolverFunc is a helper utility that wraps a function so it satisfies the Resolver interface. This is useful when you want to add additional endpoint resolving logic, or stub out specific endpoints with custom values.

func (ResolverFunc) EndpointFor

func (fn ResolverFunc) EndpointFor(service, region string, opts ...func(*Options)) (ResolvedEndpoint, error)

EndpointFor wraps the ResolverFunc function to satisfy the Resolver interface.

type Service

type Service struct {
	// contains filtered or unexported fields
}

A Service provides information about a service, and ability to resolve an endpoint from the context of a service, given a region.

func (Service) Endpoints

func (s Service) Endpoints() map[string]Endpoint

Endpoints returns a map of Endpoints indexed by their ID for all known endpoints for a service.

A region is the Volcstack region the service exists in. Whereas a Endpoint is an URL that can be resolved to a instance of a service.

func (Service) ID

func (s Service) ID() string

ID returns the identifier for the service.

func (Service) Regions

func (s Service) Regions() map[string]Region

Regions returns a map of Regions that the service is present in.

A region is the Volcstack region the service exists in. Whereas a Endpoint is an URL that can be resolved to a instance of a service.

func (Service) ResolveEndpoint

func (s Service) ResolveEndpoint(region string, opts ...func(*Options)) (ResolvedEndpoint, error)

ResolveEndpoint resolves an endpoint from the context of a service given a region. See Partition.EndpointFor for usage and errors that can be returned.

type UnknownEndpointError

type UnknownEndpointError struct {
	Partition string
	Service   string
	Region    string
	Known     []string
	// contains filtered or unexported fields
}

A UnknownEndpointError is returned when in StrictMatching mode and the service is valid, but the region does not resolve to an endpoint. Includes a list of all known endpoints for the service.

func NewUnknownEndpointError

func NewUnknownEndpointError(p, s, r string, known []string) UnknownEndpointError

NewUnknownEndpointError builds and returns UnknownEndpointError.

func (UnknownEndpointError) Error

func (e UnknownEndpointError) Error() string

String returns the string representation of the error.

func (UnknownEndpointError) String

func (e UnknownEndpointError) String() string

String returns the string representation of the error.

type UnknownServiceError

type UnknownServiceError struct {
	Partition string
	Service   string
	Known     []string
	// contains filtered or unexported fields
}

A UnknownServiceError is returned when the service does not resolve to an endpoint. Includes a list of all known services for the partition. Returned when a partition does not support the service.

func NewUnknownServiceError

func NewUnknownServiceError(p, s string, known []string) UnknownServiceError

NewUnknownServiceError builds and returns UnknownServiceError.

func (UnknownServiceError) Error

func (e UnknownServiceError) Error() string

String returns the string representation of the error.

func (UnknownServiceError) String

func (e UnknownServiceError) String() string

String returns the string representation of the error.