I went digging a bit this morning and came across this:
https://issues.apache.org/jira/browse/IVY-938
It seems like this problem has been around for a very long time!
I'll chalk it up as a known issue and continue to pursue the avenue of
getting maven to publish a pom with an updated timestamp.
-Jonathan
On Wed, Sep 28, 2011 at 5:26 PM, Jonathan Williams <spamhammer1...@gmail.com
> wrote:
> Hi Maarten,
>
> Thanks for the swift reply.
>
> Of all your suggestions, updating the pom.xml is what made it work. It
> looks like this issue centers around our maven build not publishing an
> effective pom.xml - instead it is publishing the pom.xml file stored in SCM
> with a correspondingly old timestamp. However, this is the default behaviour
> for Maven since 2.1. It seems like Ivy should ignore the timestamp on the
> pom.xml when dealing with a changing pattern on an ibiblio resolver, by
> default. There appears to be a workaround by telling our maven build to
> publish an effective pom.xml for each SNAPSHOT.
>
> -Jonathan
>
>
> On Wed, Sep 28, 2011 at 4:16 PM, Maarten Coene <maarten_co...@yahoo.com>wrote:
>
>> I'm not 100% sure and I don't have the time to check now (sorry) but I
>> think Ivy will only check if an artifact has changed if the ivy file (or pom
>> file in your situation) has changed.
>> From the timestamps in your listing it seems that only the jar has been
>> updated and that the pom has remained unchanged.
>>
>> Could you try updating the pom as well to see if this solves your problem?
>>
>> In addition if I remember correctly, there is a bug in the chain resolver
>> in combination with changingPatterns: if you specify a changingPattern on a
>> child resolver, you must also specify it on the chain, otherwise Ivy won't
>> consider the resolver as changing.
>>
>> So, a second option to try could be adding the changingPattern attribute
>> to your chain resolver.
>>
>> A third possibility is to add changing="true" to your dependency,
>> something like:
>>
>> <dependency org="com.foo" name="bar" rev="0.0.1-SNAPSHOT"
>> changing="true"/>
>>
>> Maarten
>>
>>
>>
>> ________________________________
>> From: Jonathan Williams <spamhammer1...@gmail.com>
>> To: ivy-user@ant.apache.org
>> Sent: Wednesday, September 28, 2011 9:55 PM
>> Subject: Ivy cache ignoring changingPattern on ibiblio resolver, not
>> picking up latest SNAPSHOT artifact
>>
>> Hi,
>>
>> I'm trying to get Ivy to pick up the latest SNAPSHOT revision of an
>> artifact
>> from my local Maven repository. I've looked through the documentation and
>> numerous examples online and followed the suggestions there, but I haven't
>> had any luck so far. Ivy finds and downloads the SNAPSHOT artifact the
>> first
>> time without any issue and stores it in the cache. However, if that
>> SNAPSHOT
>> artifact is subsequently updated in my Maven repo, Ivy will not pick up
>> the
>> latest artifact. Here are the relevent parts of my ivysettings.xml
>>
>> <property name="ivy.resolver.default.check.modified" value="true"/>
>>
>> <resolvers>
>> <chain name="default-chain" returnFirst="true">
>>
>> <filesystem name="enterprise" m2compatible="true">
>> <ivy
>> pattern="${enterprise.repo.dir}/[organisation]/[module]/ivy.xml"/>
>> <artifact
>>
>> pattern="${enterprise.repo.dir}/[organisation]/[module]/[artifact].[ext]"/>
>> </filesystem>
>> <url name="shared" m2compatible="true" checksums="">
>> <ivy
>> pattern="${shared.repo.dir}/[organisation]/[module]/[revision]/ivy.xml"/>
>> <artifact
>>
>> pattern="${shared.repo.dir}/[organisation]/[module]/[revision]/[artifact]-[revision](-[type]).[ext]"/>
>> </url>
>>
>> <ibiblio name="maven-local" m2compatible="true"
>> root="${maven.cache.uri}" changingPattern=".*SNAPSHOT"/>
>> </chain>
>> </resolvers>
>>
>> Here are the contents of my local maven repo:
>>
>> -rw-r--r-- 1 jwilliam xxxxxx 2042390 Sep 28 15:17
>>
>> ../../../../build/.cache/m2/com/foo/bar/0.0.1-SNAPSHOT/bar-0.0.1-SNAPSHOT.jar
>> -rw-r--r-- 1 jwilliam xxxxxx 7817 Sep 23 12:01
>>
>> ../../../../build/.cache/m2/com/foo/bar/0.0.1-SNAPSHOT/bar-0.0.1-SNAPSHOT.pom
>>
>> And my ivy cache, notice how the bar-0.0.1-SNAPSHOT artifact is no longer
>> up
>> to date (both size and timestamp different from the maven repo):
>>
>> ../../../../build/.cache/global/com.foo/bar:
>> total 2028
>> drwxr-xr-x 2 jwilliam xxxxxx 4096 Sep 28 14:56 .
>> drwxr-xr-x 20 jwilliam xxxxxx 4096 Sep 28 14:57 ..
>> -rw-r--r-- 1 jwilliam xxxxxx 5925 Sep 23 12:01 ivy-0.0.1-SNAPSHOT.xml
>> -rw-r--r-- 1 jwilliam xxxxxx 7817 Sep 23 12:01
>> ivy-0.0.1-SNAPSHOT.xml.original
>> -rw-r--r-- 1 jwilliam xxxxxx 931 Sep 28 15:19
>> ivydata-0.0.1-SNAPSHOT.properties
>> -rw-r--r-- 1 jwilliam xxxxxx 2042413 Sep 28 14:56
>> bar-0.0.1-SNAPSHOT-jar.jar
>>
>> My dependency on com.foo:bar is declared as such:
>>
>> <dependency org="com.foo" name="bar" rev="0.0.1-SNAPSHOT"/>
>>
>>
>> Some of the things I've tried are tweaking the pattern I'm using in
>> changingPattern, explicitly setting the
>>
>> 'pattern="[organisation]/[module]/[revision]/[artifact]-[revision](-[classifier]).[ext]"'
>> and 'checkmodified="true"' fields. Nothing seems to work, short of
>> deleting
>> my Ivy cache and forcing a re-download of the artifact.
>>
>> Any ideas on what I'm doing that is different from all the examples I've
>> looked at that ostensibly work?
>>
>> -Jonathan
>>
>
>
