Package com.atlassian.bamboo.plugin.servlet

Class AbstractDownloadStrategy

java.lang.Object

com.atlassian.bamboo.plugin.servlet.AbstractDownloadStrategy

All Implemented Interfaces:

com.atlassian.plugin.servlet.DownloadStrategy

Direct Known Subclasses:

ArtifactDownloadStrategy, BambooSpecsZipDownloadStrategy, DefaultDownloadStrategy, DeploymentDownloadStrategy, GlobalArtifactDownloadStrategy, SpecLogsDownloadStrategy

public abstract class AbstractDownloadStrategy
extends Object
implements com.atlassian.plugin.servlet.DownloadStrategy

Field Summary

Fields

Modifier and Type	Field	Description
protected BambooAuthenticationContext	authenticationContext
protected BambooContentTypeResolver	bambooContentTypeResolver
protected BambooPermissionManager	bambooPermissionManager
protected static org.apache.logging.log4j.Logger	log

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	AbstractDownloadStrategy(AdministrationConfigurationAccessor administrationConfigurationAccessor, BambooContentTypeResolver bambooContentTypeResolver, BambooAuthenticationContext authenticationContext, BambooPermissionManager bambooPermissionManager)

Method Summary

Modifier and Type	Method	Description
String	generateETag(File file)	Generates an ETag for a given file based on its last modified timestamp and length
protected abstract @NotNull TitledFile	getFileToServe(RequestPath requestPath, javax.servlet.http.HttpServletRequest request)
protected abstract String	getServletPath()	Returns the servlet path handled by this download strategy.
static boolean	isByteRangeRequest(javax.servlet.http.HttpServletRequest request)	Checks if the request contains a valid Byte-Range header
boolean	isCompressionEnabled()
boolean	matches(String requestUri)
protected RangeHeaderResult	processRangeHeader(javax.servlet.http.HttpServletRequest httpServletRequest, javax.servlet.http.HttpServletResponse httpServletResponse, long fileLength)	Processes the Range and If-Range headers from the HTTP request to determine the byte range to be served This method validates the range, calculates the start and content length, and sets the appropriate response headers If the range is invalid or not satisfiable, it sets the response status to 416 (Range Not Satisfiable) If an If-Range header is present, it checks whether the file has changed since the specified date or ETag If the file has changed, it serves the entire file instead of the range
void	serveFile(javax.servlet.http.HttpServletRequest httpServletRequest, javax.servlet.http.HttpServletResponse httpServletResponse)
protected void	serveOrdinaryFile(javax.servlet.http.HttpServletRequest httpServletRequest, javax.servlet.http.HttpServletResponse httpServletResponse, TitledFile titledFileToServe)	Serves the specified file, handling both full and partial content requests
protected void	throwPermissionException(RequestPath requestPath)	Throws an exception indicating that the current user does not have permission to access the requested item.

Methods inherited from class java.lang.Object

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

Field Detail

log

protected static final org.apache.logging.log4j.Logger log

bambooContentTypeResolver

protected final BambooContentTypeResolver bambooContentTypeResolver

authenticationContext

protected final BambooAuthenticationContext authenticationContext

bambooPermissionManager

protected final BambooPermissionManager bambooPermissionManager

Constructor Detail

AbstractDownloadStrategy

protected AbstractDownloadStrategy(AdministrationConfigurationAccessor administrationConfigurationAccessor,
                                   BambooContentTypeResolver bambooContentTypeResolver,
                                   BambooAuthenticationContext authenticationContext,
                                   BambooPermissionManager bambooPermissionManager)

Method Detail

matches

public boolean matches(String requestUri)

Specified by:

matches in interface com.atlassian.plugin.servlet.DownloadStrategy

getServletPath

protected abstract String getServletPath()

Returns the servlet path handled by this download strategy. Includes the leading "/" but no trailing "/", e.g. "/download" or "/artifact".

serveFile

public void serveFile(javax.servlet.http.HttpServletRequest httpServletRequest,
                      javax.servlet.http.HttpServletResponse httpServletResponse)
               throws com.atlassian.plugin.servlet.DownloadException

Specified by:

serveFile in interface com.atlassian.plugin.servlet.DownloadStrategy

Throws:

com.atlassian.plugin.servlet.DownloadException

getFileToServe

@NotNull
protected abstract @NotNull TitledFile getFileToServe(RequestPath requestPath,
                                                      javax.servlet.http.HttpServletRequest request)
                                               throws org.acegisecurity.AccessDeniedException,
                                                      FileNotFoundException,
                                                      UserNotLoggedInException,
                                                      WebValidationException

Returns:

file to serve, with an optional display name if file is a directory

Throws:

org.acegisecurity.AccessDeniedException

FileNotFoundException

UserNotLoggedInException

WebValidationException

serveOrdinaryFile

protected void serveOrdinaryFile(javax.servlet.http.HttpServletRequest httpServletRequest,
                                 javax.servlet.http.HttpServletResponse httpServletResponse,
                                 TitledFile titledFileToServe)
                          throws IOException

Serves the specified file, handling both full and partial content requests

Parameters:

httpServletRequest - The servlet request containing client data

httpServletResponse - The servlet response for sending the file data

titledFileToServe - The file to be served, with metadata

Throws:

IOException - If an error occurs during file access or streaming

isByteRangeRequest

public static boolean isByteRangeRequest(javax.servlet.http.HttpServletRequest request)

Checks if the request contains a valid Byte-Range header

Parameters:

request - The HTTP request

Returns:

boolean True if the request contains a Range header, false otherwise

generateETag

public String generateETag(File file)

Generates an ETag for a given file based on its last modified timestamp and length

Parameters:

file - The file for which the ETag is generated

Returns:

A string representing the ETag

processRangeHeader

protected RangeHeaderResult processRangeHeader(javax.servlet.http.HttpServletRequest httpServletRequest,
                                               javax.servlet.http.HttpServletResponse httpServletResponse,
                                               long fileLength)

Processes the Range and If-Range headers from the HTTP request to determine the byte range to be served This method validates the range, calculates the start and content length, and sets the appropriate response headers If the range is invalid or not satisfiable, it sets the response status to 416 (Range Not Satisfiable) If an If-Range header is present, it checks whether the file has changed since the specified date or ETag If the file has changed, it serves the entire file instead of the range

Parameters:

httpServletRequest - The servlet request containing the Range and If-Range headers (if present)

httpServletResponse - The servlet response to set the headers on

fileLength - The total length of the file being requested

Returns:

A RangeHeaderResult containing the start position and content length to be served, or null if the range is invalid

throwPermissionException

protected void throwPermissionException(RequestPath requestPath)
                                 throws UserNotLoggedInException,
                                        org.acegisecurity.AccessDeniedException

Throws an exception indicating that the current user does not have permission to access the requested item. The requestPath parameter may be included in the exception message and/or logs.

Throws:

UserNotLoggedInException

org.acegisecurity.AccessDeniedException

isCompressionEnabled

public boolean isCompressionEnabled()