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HPCC-27843 CLI support for specifying remote storage instead of DALI #17813

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merged 1 commit into from Oct 4, 2023
Merged

HPCC-27843 CLI support for specifying remote storage instead of DALI #17813

merged 1 commit into from Oct 4, 2023

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afishbeck
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@afishbeck afishbeck commented Sep 25, 2023 •
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  • This change is a bug fix (non-breaking change which fixes an issue).
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https://track.hpccsystems.com/browse/HPCC-28373
Jira updated

@afishbeck afishbeck changed the title HPCC-28373 CLI support for specifying remote storage instead of DALI HPCC-27843 CLI support for specifying remote storage instead of DALI Sep 25, 2023
@afishbeck
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@ghalliday @jakesmith this change is intended only to replace usage of remote DALI with DFS (via a remote storage definition). It's not a reinvention of how data gets onto roxie on the cloud. That is something we may want to discuss at the offsite.

Also note, this is step 1, getting the file meta-data or DFU workunits in place.

Roxie actually copying from remote needs testing once this is in place.
And there is a JIRA open about dfuserver handling remote copies: https://track.hpccsystems.com/browse/HPCC-29694

ghalliday
ghalliday reviewed Sep 27, 2023
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@afishbeck looks good. A couple of items of debug tracing left in. Jake needs to check the logic, I was mainly looking for flaws in the code.

common/pkgfiles/referencedfilelist.cpp Outdated
if (tree)
{
processRemoteFileTree(tree, srcCluster, subfiles);
DBGLOG("RemoteDALI xml");
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This looks like it should be removed...

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oops, removed.

common/pkgfiles/referencedfilelist.cpp Outdated
if (tree)
{
remoteStorage.set(remoteStorageName);
DBGLOG("RemoteStorage xml");
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Also, should be deleted?

common/pkgfiles/referencedfilelist.cpp Outdated
else
resolveLocal(locations, srcCluster, user, subfiles);
}

void ReferencedFile::resolve(const char *dstCluster, const char *srcCluster, IUserDescriptor *user, INode *remote, const char *remotePrefix, bool checkLocalFirst, StringArray *subfiles, bool _trackSubFiles, bool resolveForeign)
/*
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Should now be removed?

jakesmith
jakesmith reviewed Sep 27, 2023
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@afishbeck - looks sensible overall, some minor comments/questions.

common/pkgfiles/referencedfilelist.cpp
StringAttrBuilder logicalNameText(logicalName), daliipText(daliip);
logicalNameText.set(skipForeign(lfn, &daliipText)).toLowerCase();
StringAttrBuilder logicalNameText(logicalName), daliipText(daliip), remoteStorageText(remoteStorage);
logicalNameText.set(skipForeignOrRemote(lfn, &daliipText, &remoteStorageText)).toLowerCase();
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probably not for now, but it feels like checkForeign/skipNextLfnScope/skipForeignOrRemote should be either using similar functionality already in CDfsLogicalFileName, or for these logical file helpers to be commoned up and moved there.

common/pkgfiles/referencedfilelist.cpp

virtual bool needsCopying(bool cloneForeign) const override;

virtual const char *getLogicalName() const {return logicalName.str();}
virtual unsigned getFlags() const {return flags;}
virtual const SocketEndpoint &getForeignIP(SocketEndpoint &ep) const
{
if ((flags & RefFileForeign) && daliip.length())
if ((flags & RefFileLFNForeign) && daliip.length())
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maybe not new, code implies RefFileLFNForeign flag can be set and daliip empty, is that possible?

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You are right it doesn't look possible. I would like to clean this up, but since it's existing (overly defensive code) I would prefer to do it separately from adding this new feature.

common/pkgfiles/referencedfilelist.cpp Outdated Show resolved Hide resolved
common/pkgfiles/referencedfilelist.cpp Outdated Show resolved Hide resolved
common/pkgfiles/referencedfilelist.cpp Outdated Show resolved Hide resolved
common/pkgfiles/referencedfilelist.cpp Outdated Show resolved Hide resolved
common/pkgfiles/referencedfilelist.cpp Outdated Show resolved Hide resolved
dali/dfu/dfuutil.cpp Outdated Show resolved Hide resolved
dali/dfu/dfuutil.cpp Outdated
if (tree)
ftree.setown(tree->getPropTree("File"));
if (!ftree.get())
throw MakeStringException(-1,"Source file %s could not be found in Remote Storage", remoteLFN.str()); //remote scope already included in remoteLFN
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should use makeStringExceptionV

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now we have a exceptionHandler mechansim (and it's always been a good idea, we're just lazy ;)) - it would be good to add meaningful error codes (based on ranges in errrorlist.h)

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Agreed. It might make sense to do all of dfuutil.cpp at once.

I've created a jira: https://track.hpccsystems.com/browse/HPCC-30410

dali/dfu/dfuutil.cpp Outdated Show resolved Hide resolved
jakesmith
jakesmith approved these changes Oct 2, 2023
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@afishbeck - looks good, a couple of trivial comments + 1 question - but could be merged now after squashing afaics.

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ghalliday
ghalliday approved these changes Oct 2, 2023
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Changes following my comments look good

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@afishbeck the build failure looks like it may be related.

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@jakesmith @ghalliday I did some trivial fixes based on Jake's comments and added the expert config section to ESP. I'll squash after tomorrow mornings meeting with Gavin.
Unfortunately I did things in the wrong order and will now have to wait to look at any build test errors til after the current run.

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@afishbeck - looks good to squash, passes tests bar the docker 'no space left on device' issue.

@afishbeck
HPCC-27843 CLI support for specifying remote storage instead of DALI
8071bf5 
Signed-off-by: Anthony Fishbeck <anthony.fishbeck@lexisnexis.com>
@ghalliday ghalliday merged commit b73ac78 into hpcc-systems:candidate-9.4.x Oct 4, 2023
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