@ -44,6 +44,7 @@
package org.eclipse.jgit.transport ;
import static java.util.Collections.unmodifiableMap ;
import static java.util.Objects.requireNonNull ;
import static org.eclipse.jgit.lib.Constants.R_TAGS ;
import static org.eclipse.jgit.transport.GitProtocolConstants.CAPABILITY_REF_IN_WANT ;
import static org.eclipse.jgit.transport.GitProtocolConstants.CAPABILITY_SERVER_OPTION ;
@ -282,6 +283,8 @@ public class UploadPack {
private OutputStream msgOut = NullOutputStream . INSTANCE ;
private ErrorWriter errOut = new PackProtocolErrorWriter ( ) ;
/ * *
* Refs eligible for advertising to the client , set using
* { @link # setAdvertisedRefs } .
@ -756,9 +759,59 @@ public class UploadPack {
/ * *
* Execute the upload task on the socket .
*
* < p > If the client passed extra parameters ( e . g . , "version=2" ) through a
* side channel , the caller must call setExtraParameters first to supply
* them .
* < p >
* Same as { @link # uploadWithExceptionPropagation } except that the thrown
* exceptions are handled in the method , and the error messages are sent to
* the clients .
*
* < p >
* Call this method if the caller does not have an error handling mechanism .
* Call { @link # uploadWithExceptionPropagation } if the caller wants to have
* its own error handling mechanism .
*
* @param input
* @param output
* @param messages
* @throws java . io . IOException
* /
public void upload ( InputStream input , OutputStream output ,
@Nullable OutputStream messages ) throws IOException {
try {
uploadWithExceptionPropagation ( input , output , messages ) ;
} catch ( ServiceMayNotContinueException err ) {
if ( ! err . isOutput ( ) & & err . getMessage ( ) ! = null ) {
try {
errOut . writeError ( err . getMessage ( ) ) ;
} catch ( IOException e ) {
err . addSuppressed ( e ) ;
throw err ;
}
err . setOutput ( ) ;
}
throw err ;
} catch ( IOException | RuntimeException | Error err ) {
if ( rawOut ! = null ) {
String msg = err instanceof PackProtocolException
? err . getMessage ( )
: JGitText . get ( ) . internalServerError ;
try {
errOut . writeError ( msg ) ;
} catch ( IOException e ) {
err . addSuppressed ( e ) ;
throw err ;
}
throw new UploadPackInternalServerErrorException ( err ) ;
}
throw err ;
}
}
/ * *
* Execute the upload task on the socket .
*
* < p >
* If the client passed extra parameters ( e . g . , "version=2" ) through a side
* channel , the caller must call setExtraParameters first to supply them .
*
* @param input
* raw input to read client commands from . Caller must ensure the
@ -772,15 +825,20 @@ public class UploadPack {
* through . When run over SSH this should be tied back to the
* standard error channel of the command execution . For most
* other network connections this should be null .
* @throws java . io . IOException
* @throws ServiceMayNotContinueException
* thrown if one of the hooks throws this .
* @throws IOException
* thrown if the server or the client I / O fails , or there ' s an
* internal server error .
* /
public void upload ( InputStream input , OutputStream output ,
@Nullable OutputStream messages ) throws IOException {
PacketLineOut pckOut = null ;
public void uploadWithExceptionPropagation ( InputStream input ,
OutputStream output , @Nullable OutputStream messages )
throws ServiceMayNotContinueException , IOException {
try {
rawIn = input ;
if ( messages ! = null )
if ( messages ! = null ) {
msgOut = messages ;
}
if ( timeout > 0 ) {
final Thread caller = Thread . currentThread ( ) ;
@ -800,42 +858,12 @@ public class UploadPack {
}
pckIn = new PacketLineIn ( rawIn ) ;
pckOut = new PacketLineOut ( rawOut ) ;
PacketLineOut pckOut = new PacketLineOut ( rawOut ) ;
if ( useProtocolV2 ( ) ) {
serviceV2 ( pckOut ) ;
} else {
service ( pckOut ) ;
}
} catch ( UploadPackInternalServerErrorException err ) {
// UploadPackInternalServerErrorException is a special exception
// that indicates an error is already written to the client. Do
// nothing.
throw err ;
} catch ( ServiceMayNotContinueException err ) {
if ( ! err . isOutput ( ) & & err . getMessage ( ) ! = null & & pckOut ! = null ) {
try {
pckOut . writeString ( "ERR " + err . getMessage ( ) + "\n" ) ; //$NON-NLS-1$ //$NON-NLS-2$
} catch ( IOException e ) {
err . addSuppressed ( e ) ;
throw err ;
}
err . setOutput ( ) ;
}
throw err ;
} catch ( IOException | RuntimeException | Error err ) {
if ( pckOut ! = null ) {
String msg = err instanceof PackProtocolException
? err . getMessage ( )
: JGitText . get ( ) . internalServerError ;
try {
pckOut . writeString ( "ERR " + msg + "\n" ) ; //$NON-NLS-1$ //$NON-NLS-2$
} catch ( IOException e ) {
err . addSuppressed ( e ) ;
throw err ;
}
throw new UploadPackInternalServerErrorException ( err ) ;
}
throw err ;
} finally {
msgOut = NullOutputStream . INSTANCE ;
walk . close ( ) ;
@ -2114,54 +2142,42 @@ public class UploadPack {
Set < String > caps = req . getClientCapabilities ( ) ;
boolean sideband = caps . contains ( OPTION_SIDE_BAND )
| | caps . contains ( OPTION_SIDE_BAND_64K ) ;
if ( sideband ) {
try {
sendPack ( true , req , accumulator , allTags , unshallowCommits ,
deepenNots , pckOut ) ;
} catch ( ServiceMayNotContinueException err ) {
String message = err . getMessage ( ) ;
if ( message = = null ) {
message = JGitText . get ( ) . internalServerError ;
}
try {
reportInternalServerErrorOverSideband ( message ) ;
} catch ( IOException e ) {
err . addSuppressed ( e ) ;
throw err ;
}
throw new UploadPackInternalServerErrorException ( err ) ;
} catch ( IOException | RuntimeException | Error err ) {
try {
reportInternalServerErrorOverSideband (
JGitText . get ( ) . internalServerError ) ;
} catch ( IOException e ) {
err . addSuppressed ( e ) ;
throw err ;
}
throw new UploadPackInternalServerErrorException ( err ) ;
errOut = new SideBandErrorWriter ( ) ;
int bufsz = SideBandOutputStream . SMALL_BUF ;
if ( req . getClientCapabilities ( ) . contains ( OPTION_SIDE_BAND_64K ) ) {
bufsz = SideBandOutputStream . MAX_BUF ;
}
OutputStream packOut = new SideBandOutputStream (
SideBandOutputStream . CH_DATA , bufsz , rawOut ) ;
ProgressMonitor pm = NullProgressMonitor . INSTANCE ;
if ( ! req . getClientCapabilities ( ) . contains ( OPTION_NO_PROGRESS ) ) {
msgOut = new SideBandOutputStream (
SideBandOutputStream . CH_PROGRESS , bufsz , rawOut ) ;
pm = new SideBandProgressMonitor ( msgOut ) ;
}
sendPack ( pm , pckOut , packOut , req , accumulator , allTags ,
unshallowCommits , deepenNots ) ;
pckOut . end ( ) ;
} else {
sendPack ( false , req , accumulator , allTags , unshallowCommits , deepenNots ,
pckOut ) ;
sendPack ( NullProgressMonitor . INSTANCE , pckOut , rawOut , req ,
accumulator , allTags , unshallowCommits , deepenNots ) ;
}
}
private void reportInternalServerErrorOverSideband ( String message )
throws IOException {
@SuppressWarnings ( "resource" /* java 7 */ )
SideBandOutputStream err = new SideBandOutputStream (
SideBandOutputStream . CH_ERROR , SideBandOutputStream . SMALL_BUF ,
rawOut ) ;
err . write ( Constants . encode ( message ) ) ;
err . flush ( ) ;
}
/ * *
* Send the requested objects to the client .
*
* @param sideband
* whether to wrap the pack in side - band pkt - lines , interleaved
* with progress messages and errors .
* @param pm
* progress monitor
* @param pckOut
* PacketLineOut that shares the output with packOut
* @param packOut
* packfile output
* @param req
* request being processed
* @param accumulator
@ -2173,35 +2189,14 @@ public class UploadPack {
* shallow commits on the client that are now becoming unshallow
* @param deepenNots
* objects that the client specified using - - shallow - exclude
* @param pckOut
* output writer
* @throws IOException
* if an error occurred while generating or writing the pack .
* /
private void sendPack ( final boolean sideband ,
FetchRequest req ,
private void sendPack ( ProgressMonitor pm , PacketLineOut pckOut ,
OutputStream packOut , FetchRequest req ,
PackStatistics . Accumulator accumulator ,
@Nullable Collection < Ref > allTags ,
List < ObjectId > unshallowCommits ,
List < ObjectId > deepenNots ,
PacketLineOut pckOut ) throws IOException {
ProgressMonitor pm = NullProgressMonitor . INSTANCE ;
OutputStream packOut = rawOut ;
if ( sideband ) {
int bufsz = SideBandOutputStream . SMALL_BUF ;
if ( req . getClientCapabilities ( ) . contains ( OPTION_SIDE_BAND_64K ) )
bufsz = SideBandOutputStream . MAX_BUF ;
packOut = new SideBandOutputStream ( SideBandOutputStream . CH_DATA ,
bufsz , rawOut ) ;
if ( ! req . getClientCapabilities ( ) . contains ( OPTION_NO_PROGRESS ) ) {
msgOut = new SideBandOutputStream (
SideBandOutputStream . CH_PROGRESS , bufsz , rawOut ) ;
pm = new SideBandProgressMonitor ( msgOut ) ;
}
}
@Nullable Collection < Ref > allTags , List < ObjectId > unshallowCommits ,
List < ObjectId > deepenNots ) throws IOException {
if ( wantAll . isEmpty ( ) ) {
preUploadHook . onSendPack ( this , wantIds , commonBase ) ;
} else {
@ -2344,9 +2339,6 @@ public class UploadPack {
}
pw . close ( ) ;
}
if ( sideband )
pckOut . end ( ) ;
}
private static void findSymrefs (
@ -2411,4 +2403,28 @@ public class UploadPack {
}
}
}
private interface ErrorWriter {
void writeError ( String message ) throws IOException ;
}
private class SideBandErrorWriter implements ErrorWriter {
@Override
public void writeError ( String message ) throws IOException {
@SuppressWarnings ( "resource" /* java 7 */ )
SideBandOutputStream err = new SideBandOutputStream (
SideBandOutputStream . CH_ERROR ,
SideBandOutputStream . SMALL_BUF , requireNonNull ( rawOut ) ) ;
err . write ( Constants . encode ( message ) ) ;
err . flush ( ) ;
}
}
private class PackProtocolErrorWriter implements ErrorWriter {
@Override
public void writeError ( String message ) throws IOException {
new PacketLineOut ( requireNonNull ( rawOut ) )
. writeString ( "ERR " + message + '\n' ) ; //$NON-NLS-1$
}
}
}