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Posted to dev@lucene.apache.org by Sami Siren <ss...@gmail.com> on 2007/04/10 10:20:27 UTC
Maven artifacts for Lucene.*
I have been hoping to put up mechanism for (easier) deployment of m2
artifacts to maven repositories (both Apache snapshot repository and the
main maven repository at ibiblio).
The most convenient way would be to use maven2 to build the various lucene
projects but as the mailing list conversation about this subject
indicates there is no common interest for changing the (working) ant based
build system to a maven based.
The next best thing IMO would be using ant build as normally for the non
maven2 releases and use maven2 for building the maven releases (.jar
files, optionally also packages for sources used to build the binary and
packages for javadocs) with related check sums and signatures.
To repeat it one more time: what I am proposing here is not meant to replace
the current solid way of building the various Lucene projects -
I am just trying to provide a convenient way to make the release artifacts
to be deployed to maven repositories.
I have put together an initial set of poms (for lucene-java) to do this
quite easily, basically what is required is installation of maven2
binaries and the set of pom files and a checkout of the lucene version to
build.
The various jars are build, packaged, check summed, signed and optionally
deployed with single mvn command. So IMO it is quite easy thing to do in
addition to normal release process.
I can also, for undefined time, volunteer to do these builds if it is too
much of burden for RMs.
There are however couple of things I need your opinion about (or at least
attention):
1. There are differencies when comparing to ant build jars (due to release
policy of a.o) the built jars will contain LICENSE.txt,
NOTICE.txt in /META-INF. Is this a problem?
2. I propose that we add additional folder level so the groupId for lucene
java would be org.apache.lucene.java (it is now org.apache.lucene
within the currently released artifacts). The initial list of artifacts (the
new proposed structure) is listed below:
groupId:org.apache.lucene
lucene-parent (pom) (a top level pom defining lucene wide stuff that
gets inherited to sub project modules)
groupId:org.apache.lucene.java
java-parent (pom)
lucene-core (jar)
lucene-demos (jar)
contrib-parent (pom)
lucene-analyzers (jar)
lucene-benchmark (jar)
lucene-highlighter(jar)
lucene-misc (jar)
lucene-queries (jar)
lucene-regex (jar)
lucene-snowball (jar)
lucene-spellchecker(jar)
lucene-surround (jar)
lucene-swing (jar)
lucene-wordnet (jar)
lucene-xml-query-parser (jar)
groupId:org.apache.lucene.nutch (TODO)
nutch-parent (pom)
nutch-core (jar)
nutch-plugins (pom)
nutch-plugin-x (jar) (as soon as nutch plugins can be of format
.jar)
...
groupId:org.apache.lucene.hadoop (TODO)
hadoop-parent (pom)
hadoop-core (jar)
hadoop-streaming (jar)
...
groupId:org.apache.lucene.solr (TODO)
solr-parent (pom)
solr-core (jar)
...
3. Where to put poms? They need to be put somewhere. I think it's not smart
at this point pollute the ant driven folder structure with
poms - they are better of in separate dir structure. What is (in your
opinion) the most convenient place for them?
I would propose that every sub project would have dir named maven (or
something similar) that would contain poms for that particular sub project.
Other possibility would be putting a lucene level dir for maven stuff and
the poms would be maintained there.
The text above was my initial thought about this, however there have been
concerns that the procedure described here might not be most optimal one. So
far the arguments have been the following:
1. Two build systems to maintain
True. However I don't quite see that so black and white: You would anyway
need to maintain the poms manually (if you care about the quality of poms)
or you would have to build some mechanism to build those. Of course in
situation where you would not actually build with maven the poms could be a
bit more simple.
2. Two build systems producing different jars, would maven2 releases require
a separate vote?
Yes the artifacts (jars) would be different, because you would need to add
LICENSE and MANIFEST into them (because of apache policy). I don't know
about the vote, how do other projects deal with this kind of situation,
anyone here to tell?
One solution to jar mismatch would be changing the ant build to put those
files in produced jars.
3. Additional burden for RM, need to run additional command, install maven
There will be that external step for doing the maven release and you need to
install maven also. But compared to current situation where you would have
to extract jars, put some more files into them, sign them, modify poms to
reflect correct version numbers, upload them to repositories manually.
The other way to do is would be changing the current build system to be more
maven friendly. This would probably mean following things:
-add poms for artifacts into svn repository (where?)
-adding LICENSE and NOTICE into jars.
-add ant target to
-sign jars
-push artifacts into staging dir or to repository (or leave it as
additional manual step)
-optionally build javadoc jars (if currently not done)
-optionally build source jars (if currently not done)
Are there any technical arguments in favour or against the proposed
solutions or is there perhaps one that outperforms them both. Please share
your thoughts about all this :)
--
Sami Siren
Re: Maven artifacts for Lucene.*
Posted by Grant Ingersoll <gs...@apache.org>.
On Apr 11, 2007, at 11:02 AM, Sami Siren wrote:
> We wouldn't touch the existing single maven artifact in the
> repository,
> just would deploy the new artifacts under different gId, nothing
> existing is broken on the way. We could of cource continue publishing
> under gId 'org.apache.lucene' if so decided but I think it's more
> clear
> if the subprojects are under dirrerent gId.
>
I was confused on the subject. I thought you were talking about the
source for some reason, but you mean the structure for the artifacts
on the servers. Like I said, I'm not fully up on M2 yet. And,
honestly, the lack of a good migration plan from M1 to M2 leaves a
very small, but bitter taste in my mouth, especially when it comes to
existing jelly scripts.
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Re: Maven artifacts for Lucene.*
Posted by Sami Siren <ss...@gmail.com>.
Grant Ingersoll wrote:
> Initial thoughts and then more inline below, and keep in mind I long ago
> drank the Maven kool-aid and am a big fan. :-)
>
> I know it is a pain to a few, but realistically speaking there has not
> been all that much noise about Maven artifacts not being available. We
> use Maven for everything we do and all I ever do when there is a new
> release of Lucene is put the new jars in our remote repository and
> everything works. It takes two or three steps and about 5 minutes of my
> time, and would be less if I scripted it. I frankly don't get what the
> big deal is. OK, it does save a few bytes on a server somewhere and we
> have our own group/artifact names (lucene/lucene), but chances are it is
> more reliable than trying to get it from one of the mirrors and it will
> be faster and the names are clear cut and easy to remember. I would
> venture anyone with Maven installed has their own repository to store
> their own, private, artifacts, so it isn't like they need to add some
> new, complex process.
Yes it is true that many organizations use internal repositories (at
least from what I've seen), heck even every developer has one
(.m2/repository by default), but IMO lots of benefits of maven are lost
if that's the way users in large utilize maven.
Like you are solving the problem for your organization by deploying
lucene into your private repository (on behalf of the developers using
you local repository) I would like to solve the problem more globally
eventually you could save that 5 mins of your time to do some more
lucene magic ;)
>> The next best thing IMO would be using ant build as normally for the non
>> maven2 releases and use maven2 for building the maven releases (.jar
>> files, optionally also packages for sources used to build the binary and
>> packages for javadocs) with related check sums and signatures.
>>
>> To repeat it one more time: what I am proposing here is not meant to
>> replace
>> the current solid way of building the various Lucene projects -
>> I am just trying to provide a convenient way to make the release
>> artifacts
>> to be deployed to maven repositories.
>>
>
> Couldn't we just add various ANT targets that package the jars per the
> Maven way, and even copy them to the appropriate places? I wonder how
> hard it would be
> to have ANT output the POM and create Maven Jars. I know it is
> backwards, but, it would be less complicated and could be hooked right
> into the ANT script and require very little from the RM.
For me it's more important to get where I am going to than some detail
that gets me there. So i would be very happy man if one way would be
adopted by the lucene community.
>
> If I'm understanding correctly, you want to change the whole package
> structure by adding one more level? Wouldn't this break every single
> user of Lucene? We are still on M1 but are in the process of
> migrating, which is not straightforward, but, alas, the writing is on
> the wall concerning M1.
We wouldn't touch the existing single maven artifact in the repository,
just would deploy the new artifacts under different gId, nothing
existing is broken on the way. We could of cource continue publishing
under gId 'org.apache.lucene' if so decided but I think it's more clear
if the subprojects are under dirrerent gId.
--
Sami Siren
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Re: Maven artifacts for Lucene.*
Posted by Joerg Hohwiller <jo...@j-hohwiller.de>.
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Hi Grant.
> Initial thoughts and then more inline below, and keep in mind I long ago
> drank the Maven kool-aid and am a big fan. :-)
>
> I know it is a pain to a few, but realistically speaking there has not
> been all that much noise about Maven artifacts not being available. We
> use Maven for everything we do and all I ever do when there is a new
> release of Lucene is put the new jars in our remote repository and
> everything works. It takes two or three steps and about 5 minutes of my
> time, and would be less if I scripted it. I frankly don't get what the
> big deal is.
That was what I was thinking, too, when I asked on this list for somebody to
deploy lucene-highlighter 2.0.0 to central maven2 repo on 08.01.2007 21:37.
I also supplied the suggested POM for it.
Anyhow nobody was able to do this for me for over a quarter of a year now.
I think it is just a matter of minutes, but I do NOT have permission to do so.
What I did is to add it to the repository of my open-source project.
I am not an expert of rights and law and hope this is allowed according to
Apache License.
Anyways it would be easier to do it once and centralized instead of making all
maven+lucene users do this AND especially cause that they create
POMs on their own that will all be different. Finally maven users involved in
two different projects that did the same thing may end up with a conflicting
state if maybe the first project forgot to declare a dependency in a lucene
contrib POM.
In the end this shows, that the process must be made so easy, that it only takes
about one command to call. I do NOT care to much wethere this would be "ant ..."
or "mvn ...".
Best regards
Jörg
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Re: Maven artifacts for Lucene.*
Posted by Michael Busch <bu...@gmail.com>.
> > Whatever files also need to be included along with the jars in order to
> > make the maven distribution complete that can't be built completley
> > dynamicly (ie: the md5 files) can certainly be commited into the
> > repository ... but if making a release requires a lot of manual
upating to
> > those files, it's going to be a hinderane to the process ... things
like
> > version number and date should ideally be filled in via variables
to help
> > keep things automated.
> This starts to sound like a plan that can work. I'll see if I can hack
> something up as a patch fow a review. Do you think poms should live in a
> separate dir or should they be spread across dirs (modules).
Hi Sami,
as you may have noticed we're aiming for a Lucene 2.2 release in about two
weeks and as it looks like I will be acting as RM. I'd like to get the maven
upload right this time, but I admit that I don't have much experience with
maven in general. I'll try to get familiar with it during the next days, but
some help will definitely be useful.
I already committed LUCENE-802 (patch from Steven Parkes) that adds
LICENSE.TXT and NOTICE.TXT to the Lucene jars. I think what remains is to
have our ant script generate the poms for maven, right? Have you made
progress
with your patch yet?
Regards,
Michael
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Re: Maven artifacts for Lucene.*
Posted by Sami Siren <ss...@gmail.com>.
Chris Hostetter wrote:
> Whatever files also need to be included along with the jars in order to
> make the maven distribution complete that can't be built completley
> dynamicly (ie: the md5 files) can certainly be commited into the
> repository ... but if making a release requires a lot of manual upating to
> those files, it's going to be a hinderane to the process ... things like
> version number and date should ideally be filled in via variables to help
> keep things automated.
This starts to sound like a plan that can work. I'll see if I can hack
something up as a patch fow a review. Do you think poms should live in a
separate dir or should they be spread across dirs (modules).
> jar dependencies are another matter ... as you say, for java-lucene the
> issue is trivial since there are no dependencies, but for other projects
> it could get complicated. Solr (for example) ships with the versions of
> it's dependencies that it expects to use, and in some cases these version
> may not be official release versions that you would ever find in a maven
> repository. I'm notsure how apps that want to publish to maven but depend
> on apss that do not publish to maven deal with this problem, but whatever
> solution they use could also be used in this case.
I have seen for example a solution where artifacts are published on
somewhere else but official repositories, but to be frank I don't know
what's the best (or at least acceptable) solution here.
> : projects). IMO we should however try to look at the big picture also and
> : not only try to solve the minimal part to get it out of lucene-java
> : hands, because I am afraid that if the minimum is done here in
> : lucene-java there might be caps to fill in other projects and the way
> : things are done here is not usable in other sub projects as it is.
>
> each project has it's own community ... even if you find a perfect
> solution to every problem anyone in the world might ever encounter,
> discussing it on java-dev does nothing to get your solution adopted by the
> nutch, hadoop, or solr communities.
I understand that there are separate communities. I am not saying that
everybody must accept the solution that will (if any) adopted by
lucene-java. But still I am hoping that we lucene-java won't
deliberately accept a solution that won't work for others (as you said
it: "if a simple solution is found for our build file, it will probably
lend itself to similar soluteions for hte other Lucne projects that use
ant.")
--
Sami Siren
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Re: Maven artifacts for Lucene.*
Posted by Chris Hostetter <ho...@fucit.org>.
: Where and how would you store for example the dependency information
: that you would be using to generate the poms? For lucene java it is easy
: for most modules as there is only dependency to lucene-core but for
: example in solr, nutch and hadoop it starts to go beyond trivial.
Whatever files also need to be included along with the jars in order to
make the maven distribution complete that can't be built completley
dynamicly (ie: the md5 files) can certainly be commited into the
repository ... but if making a release requires a lot of manual upating to
those files, it's going to be a hinderane to the process ... things like
version number and date should ideally be filled in via variables to help
keep things automated.
jar dependencies are another matter ... as you say, for java-lucene the
issue is trivial since there are no dependencies, but for other projects
it could get complicated. Solr (for example) ships with the versions of
it's dependencies that it expects to use, and in some cases these version
may not be official release versions that you would ever find in a maven
repository. I'm notsure how apps that want to publish to maven but depend
on apss that do not publish to maven deal with this problem, but whatever
solution they use could also be used in this case.
...either way, it's a discussion for the solr-dev list, not java-dev.
: projects). IMO we should however try to look at the big picture also and
: not only try to solve the minimal part to get it out of lucene-java
: hands, because I am afraid that if the minimum is done here in
: lucene-java there might be caps to fill in other projects and the way
: things are done here is not usable in other sub projects as it is.
each project has it's own community ... even if you find a perfect
solution to every problem anyone in the world might ever encounter,
discussing it on java-dev does nothing to get your solution adopted by the
nutch, hadoop, or solr communities.
-Hoss
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Re: Maven artifacts for Lucene.*
Posted by Sami Siren <ss...@gmail.com>.
Chris Hostetter wrote:
> : Couldn't we just add various ANT targets that package the jars per
> : the Maven way, and even copy them to the appropriate places? I
> : wonder how hard it would be
> : to have ANT output the POM and create Maven Jars. I know it is
>
> This is what i would view as the ideal situation ... a patch to the
> current ant build.xml that caused the package-all-binary and
> package-all-src to produce a new maven directory with everything we need
> to copy ot the maven repository would be the best way to get people to get
> on board -- it's hard to complain with something that requires no effort
> to adopt.
Where and how would you store for example the dependency information
that you would be using to generate the poms? For lucene java it is easy
for most modules as there is only dependency to lucene-core but for
example in solr, nutch and hadoop it starts to go beyond trivial.
>
> if that same patch included a new ant target named
> something like "publish-maven" which required key access to
> people.apache.org but took care of pushing the maven artifacts into the
> exact right spot, that would be one less thing people would have to worry
> about.
>
> : > 1. There are differencies when comparing to ant build jars (due to
> : > release
> : > policy of a.o) the built jars will contain LICENSE.txt,
> : > NOTICE.txt in /META-INF. Is this a problem?
>
> we should under no circumstances have two differnet jars calling
> themselves "lucene-core-X.Y.0.jar" with differnet md5 sums ... that's
> asking for a world of pain. Fortunately there is an easy fix for this:
> start putting the LICENSE.txt and NOTICE.txt files in the jar ... i think
> there's already a patch for this floating arround in Jira.
>
> : > 2. I propose that we add additional folder level so the groupId for
> : > lucene
> : > java would be org.apache.lucene.java (it is now org.apache.lucene
>
> I don't really see the advantage of this ... Lucene Java has allways had
> the *java* package org.apache.lucene, and my understanding was that
> maven groupIds should attempt to match the java package structure of the
> code. likewise the other java subprojects have their own java packages,
> shouldn't their groupIds match their pacakge structures?
I believe you are right, and I also think it makes more sense to match
the package names.
>.. but starting with Lucene
> Java is the probably the right way to go ... if a simple solution is found
> for our build file, it will probably lend itself to similar soluteions for
> hte other Lucne projects that use ant.
Yes that is my hoping also and the main motivation to start the
discussion from lucene java (as it also is a dependency to 2 more sub
projects). IMO we should however try to look at the big picture also and
not only try to solve the minimal part to get it out of lucene-java
hands, because I am afraid that if the minimum is done here in
lucene-java there might be caps to fill in other projects and the way
things are done here is not usable in other sub projects as it is.
--
Sami Siren
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Re: Maven artifacts for Lucene.*
Posted by Chris Hostetter <ho...@fucit.org>.
: Couldn't we just add various ANT targets that package the jars per
: the Maven way, and even copy them to the appropriate places? I
: wonder how hard it would be
: to have ANT output the POM and create Maven Jars. I know it is
This is what i would view as the ideal situation ... a patch to the
current ant build.xml that caused the package-all-binary and
package-all-src to produce a new maven directory with everything we need
to copy ot the maven repository would be the best way to get people to get
on board -- it's hard to complain with something that requires no effort
to adopt.
if that same patch included a new ant target named
something like "publish-maven" which required key access to
people.apache.org but took care of pushing the maven artifacts into the
exact right spot, that would be one less thing people would have to worry
about.
: > 1. There are differencies when comparing to ant build jars (due to
: > release
: > policy of a.o) the built jars will contain LICENSE.txt,
: > NOTICE.txt in /META-INF. Is this a problem?
we should under no circumstances have two differnet jars calling
themselves "lucene-core-X.Y.0.jar" with differnet md5 sums ... that's
asking for a world of pain. Fortunately there is an easy fix for this:
start putting the LICENSE.txt and NOTICE.txt files in the jar ... i think
there's already a patch for this floating arround in Jira.
: > 2. I propose that we add additional folder level so the groupId for
: > lucene
: > java would be org.apache.lucene.java (it is now org.apache.lucene
I don't really see the advantage of this ... Lucene Java has allways had
the *java* package org.apache.lucene, and my understanding was that
maven groupIds should attempt to match the java package structure of the
code. likewise the other java subprojects have their own java packages,
shouldn't their groupIds match their pacakge structures?
As a side note: nothing discussed here really has any barring on the other
Lucene sub-projects, the individual project communities need to discuss
any changes to their build processes/policies .. but starting with Lucene
Java is the probably the right way to go ... if a simple solution is found
for our build file, it will probably lend itself to similar soluteions for
hte other Lucne projects that use ant.
-Hoss
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Re: Maven artifacts for Lucene.*
Posted by Grant Ingersoll <gs...@apache.org>.
Initial thoughts and then more inline below, and keep in mind I long
ago drank the Maven kool-aid and am a big fan. :-)
I know it is a pain to a few, but realistically speaking there has
not been all that much noise about Maven artifacts not being
available. We use Maven for everything we do and all I ever do when
there is a new release of Lucene is put the new jars in our remote
repository and everything works. It takes two or three steps and
about 5 minutes of my time, and would be less if I scripted it. I
frankly don't get what the big deal is. OK, it does save a few bytes
on a server somewhere and we have our own group/artifact names
(lucene/lucene), but chances are it is more reliable than trying to
get it from one of the mirrors and it will be faster and the names
are clear cut and easy to remember. I would venture anyone with
Maven installed has their own repository to store their own, private,
artifacts, so it isn't like they need to add some new, complex process.
On Apr 10, 2007, at 4:20 AM, Sami Siren wrote:
> I have been hoping to put up mechanism for (easier) deployment of m2
> artifacts to maven repositories (both Apache snapshot repository
> and the
> main maven repository at ibiblio).
>
> The most convenient way would be to use maven2 to build the various
> lucene
> projects but as the mailing list conversation about this subject
> indicates there is no common interest for changing the (working)
> ant based
> build system to a maven based.
>
> The next best thing IMO would be using ant build as normally for
> the non
> maven2 releases and use maven2 for building the maven releases (.jar
> files, optionally also packages for sources used to build the
> binary and
> packages for javadocs) with related check sums and signatures.
>
> To repeat it one more time: what I am proposing here is not meant
> to replace
> the current solid way of building the various Lucene projects -
> I am just trying to provide a convenient way to make the release
> artifacts
> to be deployed to maven repositories.
>
Couldn't we just add various ANT targets that package the jars per
the Maven way, and even copy them to the appropriate places? I
wonder how hard it would be
to have ANT output the POM and create Maven Jars. I know it is
backwards, but, it would be less complicated and could be hooked
right into the ANT script and require very little from the RM.
Ideally, I would love to see the release process automated so that it
became push button (I know Maven goes a long way toward this)
>
> There are however couple of things I need your opinion about (or at
> least
> attention):
>
> 1. There are differencies when comparing to ant build jars (due to
> release
> policy of a.o) the built jars will contain LICENSE.txt,
> NOTICE.txt in /META-INF. Is this a problem?
Does this just mean it would be in two places? I don't think that is
a big deal.
>
> 2. I propose that we add additional folder level so the groupId for
> lucene
> java would be org.apache.lucene.java (it is now org.apache.lucene
> within the currently released artifacts). The initial list of
> artifacts (the
> new proposed structure) is listed below:
If I'm understanding correctly, you want to change the whole package
structure by adding one more level? Wouldn't this break every single
user of Lucene? We are still on M1 but are in the process of
migrating, which is not straightforward, but, alas, the writing is on
the wall concerning M1.
....
>
>
>
> The text above was my initial thought about this, however there
> have been
> concerns that the procedure described here might not be most
> optimal one. So
> far the arguments have been the following:
>
> 1. Two build systems to maintain
>
> True. However I don't quite see that so black and white: You would
> anyway
> need to maintain the poms manually (if you care about the quality
> of poms)
> or you would have to build some mechanism to build those. Of course in
> situation where you would not actually build with maven the poms
> could be a
> bit more simple.
>
> 2. Two build systems producing different jars, would maven2
> releases require
> a separate vote?
>
> Yes the artifacts (jars) would be different, because you would need
> to add
> LICENSE and MANIFEST into them (because of apache policy). I don't
> know
> about the vote, how do other projects deal with this kind of
> situation,
> anyone here to tell?
>
> One solution to jar mismatch would be changing the ant build to put
> those
> files in produced jars.
I think that would be fine to unify the jars.
>
> 3. Additional burden for RM, need to run additional command,
> install maven
>
> There will be that external step for doing the maven release and
> you need to
> install maven also. But compared to current situation where you
> would have
> to extract jars, put some more files into them, sign them, modify
> poms to
> reflect correct version numbers, upload them to repositories manually.
>
> The other way to do is would be changing the current build system
> to be more
> maven friendly. This would probably mean following things:
>
> -add poms for artifacts into svn repository (where?)
> -adding LICENSE and NOTICE into jars.
> -add ant target to
> -sign jars
> -push artifacts into staging dir or to repository (or leave it as
> additional manual step)
> -optionally build javadoc jars (if currently not done)
> -optionally build source jars (if currently not done)
>
> Are there any technical arguments in favour or against the proposed
> solutions or is there perhaps one that outperforms them both.
> Please share
> your thoughts about all this :)
>
> --
> Sami Siren
--------------------------
Grant Ingersoll
Center for Natural Language Processing
http://www.cnlp.org
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