client

package
v1.2.7 Latest Latest
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 Go to latest Published: Jan 4, 2017 License: Apache-2.0 Imports: 24 Imported by: 0

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Index

Constants

This section is empty.

Variables

View Source 
var DefaultCircuitBreakerSettings = CircuitBreakerSettings{
	MaxConcurrentRequests:  100,
	RequestVolumeThreshold: 20,
	SleepWindow:            5000,
	ErrorPercentThreshold:  90,
}

DefaultCircuitBreakerSettings describes the default circuit parameters.

Functions

func WithRetryPolicy added in v0.2.0 

func WithRetryPolicy(ctx context.Context, retryPolicy RetryPolicy) context.Context

WithRetryPolicy returns a new context that overrides the client object's retry policy.

Types

type CircuitBreakerSettings added in v0.1.3 

type CircuitBreakerSettings struct {
	// MaxConcurrentRequests is the maximum number of concurrent requests
	// the client can make at the same time. Default: 100.
	MaxConcurrentRequests int
	// RequestVolumeThreshold is the minimum number of requests needed
	// before a circuit can be tripped due to health. Default: 20.
	RequestVolumeThreshold int
	// SleepWindow how long, in milliseconds, to wait after a circuit opens
	// before testing for recovery. Default: 5000.
	SleepWindow int
	// ErrorPercentThreshold is the threshold to place on the rolling error
	// rate. Once the error rate exceeds this percentage, the circuit opens.
	// Default: 90.
	ErrorPercentThreshold int
}

CircuitBreakerSettings are the parameters that govern the client's circuit breaker.

type Client 

type Client interface {

	// GetBooks makes a GET request to /books
	// Returns a list of books
	// 200: []models.Book
	// 400: *models.BadRequest
	// 500: *models.InternalError
	// default: client side HTTP errors, for example: context.DeadlineExceeded.
	GetBooks(ctx context.Context, i *models.GetBooksInput) ([]models.Book, error)

	// CreateBook makes a POST request to /books
	// Creates a book
	// 200: *models.Book
	// 400: *models.BadRequest
	// 500: *models.InternalError
	// default: client side HTTP errors, for example: context.DeadlineExceeded.
	CreateBook(ctx context.Context, i *models.Book) (*models.Book, error)

	// GetBookByID makes a GET request to /books/{book_id}
	// Returns a book
	// 200: *models.Book
	// 400: *models.BadRequest
	// 401: *models.Unathorized
	// 404: *models.Error
	// 500: *models.InternalError
	// default: client side HTTP errors, for example: context.DeadlineExceeded.
	GetBookByID(ctx context.Context, i *models.GetBookByIDInput) (*models.Book, error)

	// GetBookByID2 makes a GET request to /books2/{id}
	// Retrieve a book
	// 200: *models.Book
	// 400: *models.BadRequest
	// 404: *models.Error
	// 500: *models.InternalError
	// default: client side HTTP errors, for example: context.DeadlineExceeded.
	GetBookByID2(ctx context.Context, id string) (*models.Book, error)

	// HealthCheck makes a GET request to /health/check
	//
	// 200: nil
	// 400: *models.BadRequest
	// 500: *models.InternalError
	// default: client side HTTP errors, for example: context.DeadlineExceeded.
	HealthCheck(ctx context.Context) error
}

Client defines the methods available to clients of the swagger-test service.

type ExponentialRetryPolicy added in v1.0.0 

type ExponentialRetryPolicy struct{}

ExponentialRetryPolicy defines an exponential retry policy

func (ExponentialRetryPolicy) Backoffs added in v1.0.0 

func (ExponentialRetryPolicy) Backoffs() []time.Duration

Backoffs returns five backoffs with exponentially increasing wait times between requests: 100, 200, 400, 800, and 1600 milliseconds +/- up to 5% jitter.

func (ExponentialRetryPolicy) Retry added in v1.0.0 

func (ExponentialRetryPolicy) Retry(req *http.Request, resp *http.Response, err error) bool

Retry will retry non-POST, non-PATCH requests that 5XX. TODO: It does not currently retry any errors returned by net/http.Client's `Do`.

type HystrixSSEEvent added in v0.1.3 

type HystrixSSEEvent struct {
	Type                            string `json:"type"`
	Name                            string `json:"name"`
	RequestCount                    int    `json:"requestCount"`
	ErrorCount                      int    `json:"errorCount"`
	ErrorPercentage                 int    `json:"errorPercentage"`
	IsCircuitBreakerOpen            bool   `json:"isCircuitBreakerOpen"`
	RollingCountFailure             int    `json:"rollingCountFailure"`
	RollingCountFallbackFailure     int    `json:"rollingCountFallbackFailure"`
	RollingCountFallbackSuccess     int    `json:"rollingCountFallbackSuccess"`
	RollingCountShortCircuited      int    `json:"rollingCountShortCircuited"`
	RollingCountSuccess             int    `json:"rollingCountSuccess"`
	RollingCountThreadPoolRejected  int    `json:"rollingCountThreadPoolRejected"`
	RollingCountTimeout             int    `json:"rollingCountTimeout"`
	CurrentConcurrentExecutionCount int    `json:"currentConcurrentExecutionCount"`
	LatencyTotalMean                int    `json:"latencyTotal_mean"`
}

HystrixSSEEvent is emitted by hystrix-go via server-sent events. It describes the state of a circuit.

type MockClient 

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

Mock of Client interface

func NewMockClient 

func NewMockClient(ctrl *gomock.Controller) *MockClient

func (*MockClient) CreateBook 

func (_m *MockClient) CreateBook(ctx context.Context, i *models.Book) (*models.Book, error)

func (*MockClient) EXPECT 

func (_m *MockClient) EXPECT() *_MockClientRecorder

func (*MockClient) GetBookByID 

func (_m *MockClient) GetBookByID(ctx context.Context, i *models.GetBookByIDInput) (*models.Book, error)

func (*MockClient) GetBookByID2 

func (_m *MockClient) GetBookByID2(ctx context.Context, id string) (*models.Book, error)

func (*MockClient) GetBooks 

func (_m *MockClient) GetBooks(ctx context.Context, i *models.GetBooksInput) ([]models.Book, error)

func (*MockClient) HealthCheck 

func (_m *MockClient) HealthCheck(ctx context.Context) error

type NoRetryPolicy added in v0.2.0 

type NoRetryPolicy struct{}

NoRetryPolicy defines a policy of never retrying a request.

func (NoRetryPolicy) Backoffs added in v0.2.0 

func (NoRetryPolicy) Backoffs() []time.Duration

Backoffs returns an empty slice.

func (NoRetryPolicy) Retry added in v0.2.0 

func (NoRetryPolicy) Retry(*http.Request, *http.Response, error) bool

Retry always returns false.

type RetryPolicy added in v0.2.0 

type RetryPolicy interface {
	// Backoffs returns the number and timing of retry attempts.
	Backoffs() []time.Duration
	// Retry receives the http request, as well as the result of
	// net/http.Client's `Do` method.
	Retry(*http.Request, *http.Response, error) bool
}

RetryPolicy defines a retry policy.

type SingleRetryPolicy added in v1.0.0 

type SingleRetryPolicy struct{}

SingleRetryPolicy defines a retry that retries a request once

func (SingleRetryPolicy) Backoffs added in v1.0.0 

func (SingleRetryPolicy) Backoffs() []time.Duration

Backoffs returns that you should retry the request 1second after it fails.

func (SingleRetryPolicy) Retry added in v1.0.0 

func (SingleRetryPolicy) Retry(req *http.Request, resp *http.Response, err error) bool

Retry will retry non-POST, non-PATCH requests that 5XX. TODO: It does not currently retry any errors returned by net/http.Client's `Do`.

type WagClient 

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

WagClient is used to make requests to the swagger-test service.

func New 

func New(basePath string) *WagClient

New creates a new client. The base path and http transport are configurable.

func NewFromDiscovery 

func NewFromDiscovery() (*WagClient, error)

NewFromDiscovery creates a client from the discovery environment variables. This method requires the three env vars: SERVICE_SWAGGER_TEST_HTTP_(HOST/PORT/PROTO) to be set. Otherwise it returns an error.

func (*WagClient) CreateBook 

func (c *WagClient) CreateBook(ctx context.Context, i *models.Book) (*models.Book, error)

CreateBook makes a POST request to /books Creates a book 200: *models.Book 400: *models.BadRequest 500: *models.InternalError default: client side HTTP errors, for example: context.DeadlineExceeded.

func (*WagClient) GetBookByID 

func (c *WagClient) GetBookByID(ctx context.Context, i *models.GetBookByIDInput) (*models.Book, error)

GetBookByID makes a GET request to /books/{book_id} Returns a book 200: *models.Book 400: *models.BadRequest 401: *models.Unathorized 404: *models.Error 500: *models.InternalError default: client side HTTP errors, for example: context.DeadlineExceeded.

func (*WagClient) GetBookByID2 

func (c *WagClient) GetBookByID2(ctx context.Context, id string) (*models.Book, error)

GetBookByID2 makes a GET request to /books2/{id} Retrieve a book 200: *models.Book 400: *models.BadRequest 404: *models.Error 500: *models.InternalError default: client side HTTP errors, for example: context.DeadlineExceeded.

func (*WagClient) GetBooks 

func (c *WagClient) GetBooks(ctx context.Context, i *models.GetBooksInput) ([]models.Book, error)

GetBooks makes a GET request to /books Returns a list of books 200: []models.Book 400: *models.BadRequest 500: *models.InternalError default: client side HTTP errors, for example: context.DeadlineExceeded.

func (*WagClient) HealthCheck 

func (c *WagClient) HealthCheck(ctx context.Context) error

HealthCheck makes a GET request to /health/check

200: nil 400: *models.BadRequest 500: *models.InternalError default: client side HTTP errors, for example: context.DeadlineExceeded.

func (*WagClient) SetCircuitBreakerDebug added in v0.1.3 

func (c *WagClient) SetCircuitBreakerDebug(b bool)

SetCircuitBreakerDebug puts the circuit

func (*WagClient) SetCircuitBreakerSettings added in v0.1.3 

func (c *WagClient) SetCircuitBreakerSettings(settings CircuitBreakerSettings)

SetCircuitBreakerSettings sets parameters on the circuit breaker. It must be called on application startup.

func (*WagClient) SetLogger added in v1.0.3 

func (c *WagClient) SetLogger(logger *logger.Logger)

SetLogger allows for setting a custom logger

func (*WagClient) SetRetryPolicy added in v1.0.0 

func (c *WagClient) SetRetryPolicy(retryPolicy RetryPolicy)

SetRetryPolicy sets a the given retry policy for all requests.

func (*WagClient) SetTimeout added in v1.0.0 

func (c *WagClient) SetTimeout(timeout time.Duration)

SetTimeout sets a timeout on all operations for the client. To make a single request with a timeout use context.WithTimeout as described here: https://godoc.org/golang.org/x/net/context#WithTimeout.

Source Files

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