core

Documentation

Index

• func MergeHeaders(left, right http.Header) http.Header
• func QueryValues(v interface{}) (url.Values, error)
• func StringifyJSON(value interface{}) (string, error)
• func WriteMultipartJSON(writer *multipart.Writer, field string, value interface{}) error
• type APIError
  • func NewAPIError(statusCode int, err error) *APIError
  • func (a *APIError) Error() string
  • func (a *APIError) Unwrap() error
• type BaseURLOption
• type CallParams
• type Caller
  • func NewCaller(params *CallerParams) *Caller
  • func (c *Caller) Call(ctx context.Context, params *CallParams) error
• type CallerParams
• type Date
  • func NewDate(t time.Time) *Date
  • func NewOptionalDate(t *time.Time) *Date
  • func (d *Date) MarshalJSON() ([]byte, error)
  • func (d *Date) Time() time.Time
  • func (d *Date) TimePtr() *time.Time
  • func (d *Date) UnmarshalJSON(data []byte) error
• type DateTime
  • func NewDateTime(t time.Time) *DateTime
  • func NewOptionalDateTime(t *time.Time) *DateTime
  • func (d *DateTime) MarshalJSON() ([]byte, error)
  • func (d *DateTime) Time() time.Time
  • func (d *DateTime) TimePtr() *time.Time
  • func (d *DateTime) UnmarshalJSON(data []byte) error
• type ErrorDecoder
• type HTTPClient
• type HTTPClientOption
• type HTTPHeaderOption
• type MaxAttemptsOption
• type QueryEncoder
• type RequestOption
• type RequestOptions
  • func NewRequestOptions(opts ...RequestOption) *RequestOptions
  • func (r *RequestOptions) ToHeader() http.Header
• type Retrier
  • func NewRetrier(opts ...RetryOption) *Retrier
  • func (r *Retrier) Run(fn RetryFunc, request *http.Request, errorDecoder ErrorDecoder, ...) (*http.Response, error)
• type RetryFunc
• type RetryOption
  • func WithMaxAttempts(attempts uint) RetryOption
• type TokenOption

Functions

func MergeHeaders

func MergeHeaders(left, right http.Header) http.Header

MergeHeaders merges the given headers together, where the right takes precedence over the left.

func QueryValues

func QueryValues(v interface{}) (url.Values, error)

QueryValues encodes url.Values from request objects.

Note: This type is inspired by Google's query encoding library, but supports far less customization and is tailored to fit this SDK's use case.

Ref: https://github.com/google/go-querystring

func StringifyJSON

func StringifyJSON(value interface{}) (string, error)

StringifyJSON returns a pretty JSON string representation of the given value.

func WriteMultipartJSON

func WriteMultipartJSON(writer *multipart.Writer, field string, value interface{}) error

WriteMultipartJSON writes the given value as a JSON part. This is used to serialize non-primitive multipart properties (i.e. lists, objects, etc).

Types

type APIError

type APIError struct {
	StatusCode int `json:"-"`
	// contains filtered or unexported fields
}

APIError is a lightweight wrapper around the standard error interface that preserves the status code from the RPC, if any.

func NewAPIError

func NewAPIError(statusCode int, err error) *APIError

NewAPIError constructs a new API error.

func (*APIError) Error

func (a *APIError) Error() string

Error returns the API error's message.

func (*APIError) Unwrap

func (a *APIError) Unwrap() error

Unwrap returns the underlying error. This also makes the error compatible with errors.As and errors.Is.

type BaseURLOption

type BaseURLOption struct {
	BaseURL string
}

BaseURLOption implements the RequestOption interface.

type CallParams

type CallParams struct {
	URL                string
	Method             string
	MaxAttempts        uint
	Headers            http.Header
	Client             HTTPClient
	Request            interface{}
	Response           interface{}
	ResponseIsOptional bool
	ErrorDecoder       ErrorDecoder
}

CallParams represents the parameters used to issue an API call.

type Caller

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

Caller calls APIs and deserializes their response, if any.

func NewCaller

func NewCaller(params *CallerParams) *Caller

NewCaller returns a new *Caller backed by the given parameters.

func (*Caller) Call

func (c *Caller) Call(ctx context.Context, params *CallParams) error

Call issues an API call according to the given call parameters.

type CallerParams

type CallerParams struct {
	Client      HTTPClient
	MaxAttempts uint
}

CallerParams represents the parameters used to constrcut a new *Caller.

type Date

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

DateTime wraps time.Time and adapts its JSON representation to conform to a RFC3339 date (e.g. 2006-01-02).

Ref: https://ijmacd.github.io/rfc3339-iso8601

func NewDate

func NewDate(t time.Time) *Date

NewDate returns a new *Date. If the given time.Time is nil, nil will be returned.

func NewOptionalDate

func NewOptionalDate(t *time.Time) *Date

NewOptionalDate returns a new *Date. If the given time.Time is nil, nil will be returned.

func (*Date) MarshalJSON

func (d *Date) MarshalJSON() ([]byte, error)

func (*Date) Time

func (d *Date) Time() time.Time

Time returns the Date's underlying time, if any. If the date is nil, the zero value is returned.

func (*Date) TimePtr

func (d *Date) TimePtr() *time.Time

TimePtr returns a pointer to the Date's underlying time.Time, if any.

func (*Date) UnmarshalJSON

func (d *Date) UnmarshalJSON(data []byte) error

type DateTime

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

DateTime wraps time.Time and adapts its JSON representation to conform to a RFC3339 date-time (e.g. 2017-07-21T17:32:28Z).

Ref: https://ijmacd.github.io/rfc3339-iso8601

func NewDateTime

func NewDateTime(t time.Time) *DateTime

NewDateTime returns a new *DateTime.

func NewOptionalDateTime

func NewOptionalDateTime(t *time.Time) *DateTime

NewOptionalDateTime returns a new *DateTime. If the given time.Time is nil, nil will be returned.

func (*DateTime) MarshalJSON

func (d *DateTime) MarshalJSON() ([]byte, error)

func (*DateTime) Time

func (d *DateTime) Time() time.Time

Time returns the DateTime's underlying time, if any. If the date-time is nil, the zero value is returned.

func (*DateTime) TimePtr

func (d *DateTime) TimePtr() *time.Time

TimePtr returns a pointer to the DateTime's underlying time.Time, if any.

func (*DateTime) UnmarshalJSON

func (d *DateTime) UnmarshalJSON(data []byte) error

type ErrorDecoder

type ErrorDecoder func(statusCode int, body io.Reader) error

ErrorDecoder decodes *http.Response errors and returns a typed API error (e.g. *APIError).

type HTTPClient

type HTTPClient interface {
	Do(*http.Request) (*http.Response, error)
}

HTTPClient is an interface for a subset of the *http.Client.

type HTTPClientOption

type HTTPClientOption struct {
	HTTPClient HTTPClient
}

HTTPClientOption implements the RequestOption interface.

type HTTPHeaderOption

type HTTPHeaderOption struct {
	HTTPHeader http.Header
}

HTTPHeaderOption implements the RequestOption interface.

type MaxAttemptsOption

type MaxAttemptsOption struct {
	MaxAttempts uint
}

MaxAttemptsOption implements the RequestOption interface.

type QueryEncoder

type QueryEncoder interface {
	EncodeQueryValues(key string, v *url.Values) error
}

QueryEncoder is an interface implemented by any type that wishes to encode itself into URL values in a non-standard way.

type RequestOption

type RequestOption interface {
	// contains filtered or unexported methods
}

RequestOption adapts the behavior of the client or an individual request.

type RequestOptions

type RequestOptions struct {
	BaseURL     string
	HTTPClient  HTTPClient
	HTTPHeader  http.Header
	MaxAttempts uint
	Token       string
}

RequestOptions defines all of the possible request options.

This type is primarily used by the generated code and is not meant to be used directly; use the option package instead.

func NewRequestOptions

func NewRequestOptions(opts ...RequestOption) *RequestOptions

NewRequestOptions returns a new *RequestOptions value.

This function is primarily used by the generated code and is not meant to be used directly; use RequestOption instead.

func (*RequestOptions) ToHeader

func (r *RequestOptions) ToHeader() http.Header

ToHeader maps the configured request options into a http.Header used for the request(s).

type Retrier

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

Retrier retries failed requests a configurable number of times with an exponential back-off between each retry.

func NewRetrier

func NewRetrier(opts ...RetryOption) *Retrier

NewRetrier constructs a new *Retrier with the given options, if any.

func (*Retrier) Run

func (r *Retrier) Run(
	fn RetryFunc,
	request *http.Request,
	errorDecoder ErrorDecoder,
	opts ...RetryOption,
) (*http.Response, error)

Run issues the request and, upon failure, retries the request if possible.

The request will be retried as long as the request is deemed retriable and the number of retry attempts has not grown larger than the configured retry limit.

type RetryFunc

type RetryFunc func(*http.Request) (*http.Response, error)

RetryFunc is a retriable HTTP function call (i.e. *http.Client.Do).

type RetryOption

type RetryOption func(*retryOptions)

RetryOption adapts the behavior the *Retrier.

func WithMaxAttempts

func WithMaxAttempts(attempts uint) RetryOption

WithMaxAttempts configures the maximum number of attempts of the *Retrier.

type TokenOption

type TokenOption struct {
	Token string
}

TokenOption implements the RequestOption interface.