webutil

package
v0.3.2 Latest Latest
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 Go to latest Published: Oct 31, 2018 License: MIT Imports: 13 Imported by: 4

Documentation

Index

Constants

View Source 
const (
	// HeaderAcceptEncoding is the "Accept-Encoding" header.
	// It indicates what types of encodings the request will accept responses as.
	// It typically enables or disables compressed (gzipped) responses.
	HeaderAcceptEncoding = "Accept-Encoding"

	// HeaderSetCookie is the header that sets cookies in a response.
	HeaderSetCookie = "Set-Cookie"

	// HeaderCookie is the request cookie header.
	HeaderCookie = "Cookie"

	// HeaderDate is the "Date" header.
	// It provides a timestamp the response was generated at.
	// It is typically used by client cache control to invalidate expired items.
	HeaderDate = "Date"

	// HeaderCacheControl is the "Cache-Control" header.
	// It indicates if and how clients should cache responses.
	// Typical values for this include "no-cache", "max-age", "min-fresh", and "max-stale" variants.
	HeaderCacheControl = "Cache-Control"

	// HeaderConnection is the "Connection" header.
	// It is used to indicate if the connection should remain open by the server
	// after the final response bytes are sent.
	// This allows the connection to be re-used, helping mitigate connection negotiation
	// penalites in making requests.
	HeaderConnection = "Connection"

	// HeaderContentEncoding is the "Content-Encoding" header.
	// It is used to indicate what the response encoding is.
	// Typical values are "gzip", "deflate", "compress", "br", and "identity" indicating no compression.
	HeaderContentEncoding = "Content-Encoding"

	// HeaderContentLength is the "Content-Length" header.
	// If provided, it specifies the size of the request or response.
	HeaderContentLength = "Content-Length"

	// HeaderContentType is the "Content-Type" header.
	// It specifies the MIME-type of the request or response.
	HeaderContentType = "Content-Type"

	// HeaderUserAgent is the user agent header.
	// It typically indicates what is making the request.
	HeaderUserAgent = "User-Agent"

	// HeaderServer is the "Server" header.
	// It is an informational header to tell the client what server software was used.
	HeaderServer = "Server"

	// HeaderVary is the "Vary" header.
	// It is used to indicate what fields should be used by the client as cache keys.
	HeaderVary = "Vary"

	// HeaderXServedBy is the "X-Served-By" header.
	// It is an informational header that indicates what software was used to generate the response.
	HeaderXServedBy = "X-Served-By"

	// HeaderXFrameOptions is the "X-Frame-Options" header.
	// It indicates if a browser is allowed to render the response in a <frame> element or not.
	HeaderXFrameOptions = "X-Frame-Options"

	// HeaderXXSSProtection is the "X-Xss-Protection" header.
	// It is a feature of internet explorer, and indicates if the browser should allow
	// requests across domain boundaries.
	HeaderXXSSProtection = "X-Xss-Protection"

	// HeaderXContentTypeOptions is the "X-Content-Type-Options" header.
	HeaderXContentTypeOptions = "X-Content-Type-Options"

	// HeaderStrictTransportSecurity is the hsts header.
	HeaderStrictTransportSecurity = "Strict-Transport-Security"

	// ContentTypeApplicationJSON is a content type for JSON responses.
	// We specify chartset=utf-8 so that clients know to use the UTF-8 string encoding.
	ContentTypeApplicationJSON = "application/json; charset=UTF-8"

	// ContentTypeHTML is a content type for html responses.
	// We specify chartset=utf-8 so that clients know to use the UTF-8 string encoding.
	ContentTypeHTML = "text/html; charset=utf-8"

	//ContentTypeXML is a content type for XML responses.
	// We specify chartset=utf-8 so that clients know to use the UTF-8 string encoding.
	ContentTypeXML = "text/xml; charset=utf-8"

	// ContentTypeText is a content type for text responses.
	// We specify chartset=utf-8 so that clients know to use the UTF-8 string encoding.
	ContentTypeText = "text/plain; charset=utf-8"

	// ConnectionKeepAlive is a value for the "Connection" header and
	// indicates the server should keep the tcp connection open
	// after the last byte of the response is sent.
	ConnectionKeepAlive = "keep-alive"

	// ContentEncodingIdentity is the identity (uncompressed) content encoding.
	ContentEncodingIdentity = "identity"
	// ContentEncodingGZIP is the gzip (compressed) content encoding.
	ContentEncodingGZIP = "gzip"
)

Variables

View Source 
var (
	// ErrURLUnset is a (hopefully) uncommon error.
	ErrURLUnset = exception.Class("request url unset")

	// DefaultRequestTimeout is the default webhook timeout.
	DefaultRequestTimeout = 10 * time.Second

	// DefaultRequestMethod is the default webhook method.
	DefaultRequestMethod = "POST"
)

Functions

func DeserializeReaderAsJSON 

func DeserializeReaderAsJSON(object interface{}, body io.ReadCloser) error

DeserializeReaderAsJSON deserializes a post body as json to a given object.

func GetHost 

func GetHost(r *http.Request) string

GetHost returns the request host, omiting the port if specified.

func GetProto 

func GetProto(r *http.Request) string

GetProto gets the request proto. X-FORWARDED-PROTO is checked first, then the original request proto is used.

func GetRemoteAddr 

func GetRemoteAddr(r *http.Request) string

GetRemoteAddr gets the origin/client ip for a request. X-FORWARDED-FOR is checked. If multiple IPs are included the first one is returned X-REAL-IP is checked. If multiple IPs are included the first one is returned Finally r.RemoteAddr is used Only benevolent services will allow access to the real IP.

func GetUserAgent 

func GetUserAgent(r *http.Request) string

GetUserAgent gets a user agent from a request.

func LocalIP 

func LocalIP() string

LocalIP returns the local server ip.

func MustParseURL 

func MustParseURL(rawURL string) *url.URL

MustParseURL parses a url and panics if there is an error.

func NewMockRequest 

func NewMockRequest(method, path string) *http.Request

NewMockRequest creates a mock request.

func NewMockRequestWithCookie 

func NewMockRequestWithCookie(method, path, cookieName, cookieValue string) *http.Request

NewMockRequestWithCookie creates a mock request with a cookie attached to it.

func PortFromBindAddr 

func PortFromBindAddr(bindAddr string) (port int32)

PortFromBindAddr returns a port number as an integer from a bind addr.

func URLWithHost 

func URLWithHost(u *url.URL, host string) *url.URL

URLWithHost returns a copy url with a given host.

func URLWithPath 

func URLWithPath(u *url.URL, path string) *url.URL

URLWithPath returns a copy url with a given path.

func URLWithPort added in v0.2.0 

func URLWithPort(u *url.URL, port string) *url.URL

URLWithPort returns a copy url with a given pprt attached to the host.

func URLWithQuery added in v0.2.0 

func URLWithQuery(u *url.URL, key, value string) *url.URL

URLWithQuery returns a copy url with a given raw query.

func URLWithRawQuery 

func URLWithRawQuery(u *url.URL, rawQuery string) *url.URL

URLWithRawQuery returns a copy url with a given raw query.

func URLWithScheme 

func URLWithScheme(u *url.URL, scheme string) *url.URL

URLWithScheme returns a copy url with a given scheme.

func WriteJSON 

func WriteJSON(w http.ResponseWriter, statusCode int, response interface{}) error

WriteJSON marshalls an object to json.

func WriteNoContent 

func WriteNoContent(w http.ResponseWriter) error

WriteNoContent writes http.StatusNoContent for a request.

func WriteRawContent 

func WriteRawContent(w http.ResponseWriter, statusCode int, content []byte) error

WriteRawContent writes raw content for the request.

func WriteXML 

func WriteXML(w http.ResponseWriter, statusCode int, response interface{}) error

WriteXML marshalls an object to json.

Types

type MockResponseWriter 

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

MockResponseWriter is an object that satisfies response writer but uses an internal buffer.

func NewMockResponse 

func NewMockResponse(buffer io.Writer) *MockResponseWriter

NewMockResponse returns a mocked response writer.

func (*MockResponseWriter) Bytes 

func (res *MockResponseWriter) Bytes() []byte

Bytes returns the raw response.

func (*MockResponseWriter) Close 

func (res *MockResponseWriter) Close() error

Close is a no-op.

func (*MockResponseWriter) ContentLength 

func (res *MockResponseWriter) ContentLength() int

ContentLength returns the content length.

func (*MockResponseWriter) Flush 

func (res *MockResponseWriter) Flush() error

Flush is a no-op.

func (*MockResponseWriter) Header 

func (res *MockResponseWriter) Header() http.Header

Header returns the response headers.

func (*MockResponseWriter) InnerResponse 

func (res *MockResponseWriter) InnerResponse() http.ResponseWriter

InnerResponse returns the backing httpresponse writer.

func (*MockResponseWriter) StatusCode 

func (res *MockResponseWriter) StatusCode() int

StatusCode returns the status code.

func (*MockResponseWriter) Write 

func (res *MockResponseWriter) Write(buffer []byte) (int, error)

Write writes data and adds to ContentLength.

func (*MockResponseWriter) WriteHeader 

func (res *MockResponseWriter) WriteHeader(statusCode int)

WriteHeader sets the status code.

type RequestSender 

type RequestSender struct {
	*url.URL
	// contains filtered or unexported fields
}

RequestSender is a slack webhook sender.

func NewRequestSender 

func NewRequestSender(destination *url.URL) *RequestSender

NewRequestSender creates a new request sender.

A request sender is a sepcialized request factory that makes request to a single endpoint.

It is useful when calling out to predefined things like webhooks.

You can send either raw bytes as the contents.

func (*RequestSender) Client 

func (rs *RequestSender) Client() *http.Client

Client returns the underlying client.

func (*RequestSender) Close 

func (rs *RequestSender) Close() bool

Close returns if we should close the connection.

func (*RequestSender) Headers 

func (rs *RequestSender) Headers() http.Header

Headers returns the headers.

func (*RequestSender) Method 

func (rs *RequestSender) Method() string

Method is the request method. It defaults to "POST".

func (*RequestSender) Send 

func (rs *RequestSender) Send() (*http.Response, error)

Send sends a request to the destination without a payload.

func (*RequestSender) SendBytes 

func (rs *RequestSender) SendBytes(ctx context.Context, contents []byte) (*http.Response, error)

SendBytes sends a message to the webhook with a given msg body as raw bytes.

func (*RequestSender) SendJSON 

func (rs *RequestSender) SendJSON(ctx context.Context, contents interface{}) (*http.Response, error)

SendJSON sends a message to the webhook with a given msg body as json.

func (*RequestSender) Tracer 

func (rs *RequestSender) Tracer() RequestTracer

Tracer returns the request tracer.

func (*RequestSender) Transport 

func (rs *RequestSender) Transport() *http.Transport

Transport returns the transport.

func (*RequestSender) WithClose 

func (rs *RequestSender) WithClose(close bool) *RequestSender

WithClose sets if we should close the connection.

func (*RequestSender) WithHeader 

func (rs *RequestSender) WithHeader(key, value string) *RequestSender

WithHeader adds an individual header.

func (*RequestSender) WithHeaders 

func (rs *RequestSender) WithHeaders(headers http.Header) *RequestSender

WithHeaders sets headers.

func (*RequestSender) WithMethod 

func (rs *RequestSender) WithMethod(method string) *RequestSender

WithMethod sets the request method (defaults to POST).

func (*RequestSender) WithTracer 

func (rs *RequestSender) WithTracer(tracer RequestTracer) *RequestSender

WithTracer sets the request tracer.

func (*RequestSender) WithTransport 

func (rs *RequestSender) WithTransport(transport *http.Transport) *RequestSender

WithTransport sets the transport.

type RequestTraceFinisher 

type RequestTraceFinisher interface {
	Finish(*http.Request, *http.Response, error)
}

RequestTraceFinisher is a finisher for request traces.

type RequestTracer 

type RequestTracer interface {
	Start(*http.Request) RequestTraceFinisher
}

RequestTracer is a tracer for requests.

Source Files

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