com.atlassian.jira.util.http.response

Class ObservantResponseWrapper

java.lang.Object

javax.servlet.ServletResponseWrapper

javax.servlet.http.HttpServletResponseWrapper

com.atlassian.jira.util.http.response.ObservantResponseWrapper

All Implemented Interfaces:

javax.servlet.http.HttpServletResponse, javax.servlet.ServletResponse

public class ObservantResponseWrapper
extends javax.servlet.http.HttpServletResponseWrapper

This HttpServletResponseWrapper can capture the HTTP response code and also to know the length of the data output.

THREAD SAFETY - One of these must be constructed on each HTTP request/response and hence only one thread may write to it at the one time. This suits the whole servlet engine idea,

Since:

v3.13.2

Field Summary

Fields inherited from interface javax.servlet.http.HttpServletResponse

SC_ACCEPTED, SC_BAD_GATEWAY, SC_BAD_REQUEST, SC_CONFLICT, SC_CONTINUE, SC_CREATED, SC_EXPECTATION_FAILED, SC_FORBIDDEN, SC_FOUND, SC_GATEWAY_TIMEOUT, SC_GONE, SC_HTTP_VERSION_NOT_SUPPORTED, SC_INTERNAL_SERVER_ERROR, SC_LENGTH_REQUIRED, SC_METHOD_NOT_ALLOWED, SC_MOVED_PERMANENTLY, SC_MOVED_TEMPORARILY, SC_MULTIPLE_CHOICES, SC_NO_CONTENT, SC_NON_AUTHORITATIVE_INFORMATION, SC_NOT_ACCEPTABLE, SC_NOT_FOUND, SC_NOT_IMPLEMENTED, SC_NOT_MODIFIED, SC_OK, SC_PARTIAL_CONTENT, SC_PAYMENT_REQUIRED, SC_PRECONDITION_FAILED, SC_PROXY_AUTHENTICATION_REQUIRED, SC_REQUEST_ENTITY_TOO_LARGE, SC_REQUEST_TIMEOUT, SC_REQUEST_URI_TOO_LONG, SC_REQUESTED_RANGE_NOT_SATISFIABLE, SC_RESET_CONTENT, SC_SEE_OTHER, SC_SERVICE_UNAVAILABLE, SC_SWITCHING_PROTOCOLS, SC_TEMPORARY_REDIRECT, SC_UNAUTHORIZED, SC_UNSUPPORTED_MEDIA_TYPE, SC_USE_PROXY

Constructor Summary

Constructors

Constructor and Description
ObservantResponseWrapper(javax.servlet.http.HttpServletResponse httpServletResponse)

Method Summary

Modifier and Type	Method and Description
long	getContentLen() Returns the length of the content that has been sent back via this HttpServletResponseWrapper.
javax.servlet.ServletOutputStream	getOutputStream() Overridden to capture output content length
int	getStatus()
PrintWriter	getWriter() Overridden to capture output content length
void	sendError(int sc) Overridden to capture HTTP status codes
void	sendError(int sc, String s) Overridden to capture HTTP status codes
void	setStatus(int sc) Overridden to capture HTTP status codes
void	setStatus(int sc, String s) Overridden to capture HTTP status codes

Methods inherited from class javax.servlet.http.HttpServletResponseWrapper

addCookie, addDateHeader, addHeader, addIntHeader, containsHeader, encodeRedirectUrl, encodeRedirectURL, encodeUrl, encodeURL, getHeader, getHeaderNames, getHeaders, sendRedirect, setDateHeader, setHeader, setIntHeader

Methods inherited from class javax.servlet.ServletResponseWrapper

flushBuffer, getBufferSize, getCharacterEncoding, getContentType, getLocale, getResponse, isCommitted, isWrapperFor, isWrapperFor, reset, resetBuffer, setBufferSize, setCharacterEncoding, setContentLength, setContentType, setLocale, setResponse

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface javax.servlet.ServletResponse

flushBuffer, getBufferSize, getCharacterEncoding, getContentType, getLocale, isCommitted, reset, resetBuffer, setBufferSize, setCharacterEncoding, setContentLength, setContentType, setLocale

Constructor Detail

ObservantResponseWrapper

public ObservantResponseWrapper(javax.servlet.http.HttpServletResponse httpServletResponse)

Method Detail

getStatus

public int getStatus()

Specified by:

getStatus in interface javax.servlet.http.HttpServletResponse

Overrides:

getStatus in class javax.servlet.http.HttpServletResponseWrapper

Returns:

the HTTP status code set on this HttpServletResponseWrapper

getContentLen

public long getContentLen()

Returns the length of the content that has been sent back via this HttpServletResponseWrapper.

This is a count in character OR bytes, depending on form of output was used. Let em explain! If the web response uses the getOutputStream() method, then the content length will be a count of bytes. If they use the getWriter() method, then it will be a count of characters.

We dont want to get into the game of working out how a set of Unicode characters translate into a series of bytes. Its expensive and the point of this code is to be as cheap as possible.

Returns:

the length of the content that has been sent back via this HttpServletResponseWrapper in bytes or characters depending on whcih output mechanism is used.

sendError

public void sendError(int sc,
                      String s)
               throws IOException

Overridden to capture HTTP status codes

Specified by:

sendError in interface javax.servlet.http.HttpServletResponse

Overrides:

sendError in class javax.servlet.http.HttpServletResponseWrapper

Throws:

IOException

sendError

public void sendError(int sc)
               throws IOException

Overridden to capture HTTP status codes

Specified by:

sendError in interface javax.servlet.http.HttpServletResponse

Overrides:

sendError in class javax.servlet.http.HttpServletResponseWrapper

Throws:

IOException

setStatus

public void setStatus(int sc)

Overridden to capture HTTP status codes

Specified by:

setStatus in interface javax.servlet.http.HttpServletResponse

Overrides:

setStatus in class javax.servlet.http.HttpServletResponseWrapper

setStatus

public void setStatus(int sc,
                      String s)

Overridden to capture HTTP status codes

Specified by:

setStatus in interface javax.servlet.http.HttpServletResponse

Overrides:

setStatus in class javax.servlet.http.HttpServletResponseWrapper

getWriter

public PrintWriter getWriter()
                      throws IOException

Overridden to capture output content length

Specified by:

getWriter in interface javax.servlet.ServletResponse

Overrides:

getWriter in class javax.servlet.ServletResponseWrapper

Throws:

IOException

getOutputStream

public javax.servlet.ServletOutputStream getOutputStream()
                                                  throws IOException

Overridden to capture output content length

Specified by:

getOutputStream in interface javax.servlet.ServletResponse

Overrides:

getOutputStream in class javax.servlet.ServletResponseWrapper

Throws:

IOException