Vendor main dependencies.

vendor/github.com/Azure/go-autorest/autorest/client.go

@@ -0,0 +1,212 @@
+package autorest
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"log"
+	"net/http"
+	"net/http/cookiejar"
+	"time"
+)
+
+const (
+	// DefaultPollingDelay is a reasonable delay between polling requests.
+	DefaultPollingDelay = 60 * time.Second
+
+	// DefaultPollingDuration is a reasonable total polling duration.
+	DefaultPollingDuration = 15 * time.Minute
+
+	// DefaultRetryAttempts is number of attempts for retry status codes (5xx).
+	DefaultRetryAttempts = 3
+)
+
+var statusCodesForRetry = []int{
+	http.StatusRequestTimeout,      // 408
+	http.StatusInternalServerError, // 500
+	http.StatusBadGateway,          // 502
+	http.StatusServiceUnavailable,  // 503
+	http.StatusGatewayTimeout,      // 504
+}
+
+const (
+	requestFormat = `HTTP Request Begin ===================================================
+%s
+===================================================== HTTP Request End
+`
+	responseFormat = `HTTP Response Begin ===================================================
+%s
+===================================================== HTTP Response End
+`
+)
+
+// Response serves as the base for all responses from generated clients. It provides access to the
+// last http.Response.
+type Response struct {
+	*http.Response `json:"-"`
+}
+
+// LoggingInspector implements request and response inspectors that log the full request and
+// response to a supplied log.
+type LoggingInspector struct {
+	Logger *log.Logger
+}
+
+// WithInspection returns a PrepareDecorator that emits the http.Request to the supplied logger. The
+// body is restored after being emitted.
+//
+// Note: Since it reads the entire Body, this decorator should not be used where body streaming is
+// important. It is best used to trace JSON or similar body values.
+func (li LoggingInspector) WithInspection() PrepareDecorator {
+	return func(p Preparer) Preparer {
+		return PreparerFunc(func(r *http.Request) (*http.Request, error) {
+			var body, b bytes.Buffer
+
+			defer r.Body.Close()
+
+			r.Body = ioutil.NopCloser(io.TeeReader(r.Body, &body))
+			if err := r.Write(&b); err != nil {
+				return nil, fmt.Errorf("Failed to write response: %v", err)
+			}
+
+			li.Logger.Printf(requestFormat, b.String())
+
+			r.Body = ioutil.NopCloser(&body)
+			return p.Prepare(r)
+		})
+	}
+}
+
+// ByInspecting returns a RespondDecorator that emits the http.Response to the supplied logger. The
+// body is restored after being emitted.
+//
+// Note: Since it reads the entire Body, this decorator should not be used where body streaming is
+// important. It is best used to trace JSON or similar body values.
+func (li LoggingInspector) ByInspecting() RespondDecorator {
+	return func(r Responder) Responder {
+		return ResponderFunc(func(resp *http.Response) error {
+			var body, b bytes.Buffer
+			defer resp.Body.Close()
+			resp.Body = ioutil.NopCloser(io.TeeReader(resp.Body, &body))
+			if err := resp.Write(&b); err != nil {
+				return fmt.Errorf("Failed to write response: %v", err)
+			}
+
+			li.Logger.Printf(responseFormat, b.String())
+
+			resp.Body = ioutil.NopCloser(&body)
+			return r.Respond(resp)
+		})
+	}
+}
+
+// Client is the base for autorest generated clients. It provides default, "do nothing"
+// implementations of an Authorizer, RequestInspector, and ResponseInspector. It also returns the
+// standard, undecorated http.Client as a default Sender.
+//
+// Generated clients should also use Error (see NewError and NewErrorWithError) for errors and
+// return responses that compose with Response.
+//
+// Most customization of generated clients is best achieved by supplying a custom Authorizer, custom
+// RequestInspector, and / or custom ResponseInspector. Users may log requests, implement circuit
+// breakers (see https://msdn.microsoft.com/en-us/library/dn589784.aspx) or otherwise influence
+// sending the request by providing a decorated Sender.
+type Client struct {
+	Authorizer        Authorizer
+	Sender            Sender
+	RequestInspector  PrepareDecorator
+	ResponseInspector RespondDecorator
+
+	// PollingDelay sets the polling frequency used in absence of a Retry-After HTTP header
+	PollingDelay time.Duration
+
+	// PollingDuration sets the maximum polling time after which an error is returned.
+	PollingDuration time.Duration
+
+	// RetryAttempts sets the default number of retry attempts for client.
+	RetryAttempts int
+
+	// RetryDuration sets the delay duration for retries.
+	RetryDuration time.Duration
+
+	// UserAgent, if not empty, will be set as the HTTP User-Agent header on all requests sent
+	// through the Do method.
+	UserAgent string
+
+	Jar http.CookieJar
+}
+
+// NewClientWithUserAgent returns an instance of a Client with the UserAgent set to the passed
+// string.
+func NewClientWithUserAgent(ua string) Client {
+	return Client{
+		PollingDelay:    DefaultPollingDelay,
+		PollingDuration: DefaultPollingDuration,
+		RetryAttempts:   DefaultRetryAttempts,
+		RetryDuration:   30 * time.Second,
+		UserAgent:       ua,
+	}
+}
+
+// Do implements the Sender interface by invoking the active Sender after applying authorization.
+// If Sender is not set, it uses a new instance of http.Client. In both cases it will, if UserAgent
+// is set, apply set the User-Agent header.
+func (c Client) Do(r *http.Request) (*http.Response, error) {
+	if r.UserAgent() == "" {
+		r, _ = Prepare(r,
+			WithUserAgent(c.UserAgent))
+	}
+	r, err := Prepare(r,
+		c.WithInspection(),
+		c.WithAuthorization())
+	if err != nil {
+		return nil, NewErrorWithError(err, "autorest/Client", "Do", nil, "Preparing request failed")
+	}
+	resp, err := SendWithSender(c.sender(), r,
+		DoRetryForStatusCodes(c.RetryAttempts, c.RetryDuration, statusCodesForRetry...))
+	Respond(resp,
+		c.ByInspecting())
+	return resp, err
+}
+
+// sender returns the Sender to which to send requests.
+func (c Client) sender() Sender {
+	if c.Sender == nil {
+		j, _ := cookiejar.New(nil)
+		return &http.Client{Jar: j}
+	}
+	return c.Sender
+}
+
+// WithAuthorization is a convenience method that returns the WithAuthorization PrepareDecorator
+// from the current Authorizer. If not Authorizer is set, it uses the NullAuthorizer.
+func (c Client) WithAuthorization() PrepareDecorator {
+	return c.authorizer().WithAuthorization()
+}
+
+// authorizer returns the Authorizer to use.
+func (c Client) authorizer() Authorizer {
+	if c.Authorizer == nil {
+		return NullAuthorizer{}
+	}
+	return c.Authorizer
+}
+
+// WithInspection is a convenience method that passes the request to the supplied RequestInspector,
+// if present, or returns the WithNothing PrepareDecorator otherwise.
+func (c Client) WithInspection() PrepareDecorator {
+	if c.RequestInspector == nil {
+		return WithNothing()
+	}
+	return c.RequestInspector
+}
+
+// ByInspecting is a convenience method that passes the response to the supplied ResponseInspector,
+// if present, or returns the ByIgnoring RespondDecorator otherwise.
+func (c Client) ByInspecting() RespondDecorator {
+	if c.ResponseInspector == nil {
+		return ByIgnoring()
+	}
+	return c.ResponseInspector
+}