[jboss-jira] [JBoss JIRA] (DROOLS-3277) KieScanner in Scala fat-jar application does not work due to Plexus configuration
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https://issues.jboss.org/browse/DROOLS-3277?page=com.atlassian.jira.plugi...
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Michael Reynolds edited comment on DROOLS-3277 at 11/7/18 4:42 PM:
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To make this work in my SBT build, I had to do the following:
# Make META-INF/sisu/javax.named.Inject a 'concat' merge strategy
# Manually concat all of the META-INF/plexus/components.xml files into a
"master" file and then choose that file as the one included in the fat-jar.
My SBT assembly configuration now looks like this. The attached components.xml file is in
my project under src/main/resources/META-INF/plexus/components.xml.
{code:scala}
assemblyMergeStrategy in assembly := {
case PathList( "META-INF", "MANIFEST.MF" ) =>
MergeStrategy.discard
case PathList( "reference.conf" ) => MergeStrategy.concat
case PathList( "META-INF", "kie.conf" ) =>
MergeStrategy.concat
case PathList( "META-INF", "sisu", "javax.inject.Named"
) => MergeStrategy.concat
case PathList( "META-INF", "plexus", "components.xml" )
=> MergeStrategy.first
case x => MergeStrategy.last
}
{code}
was (Author: reynoldsm88):
To make this work in my SBT build, I had to do the following:
# Make META-INF/sisu/javax.named.Inject a 'concat' merge stratedgy
# Manually concat all of the META-INF/plexus/components.xml files into a
"master" file and then choose that file as the one included in the fat-jar.
My SBT assembly configuration now looks like this. The attached components.xml file is in
my project under src/main/resources/META-INF/plexus/components.xml.
{code:scala}
assemblyMergeStrategy in assembly := {
case PathList( "META-INF", "MANIFEST.MF" ) =>
MergeStrategy.discard
case PathList( "reference.conf" ) => MergeStrategy.concat
case PathList( "META-INF", "kie.conf" ) =>
MergeStrategy.concat
case PathList( "META-INF", "sisu", "javax.inject.Named"
) => MergeStrategy.concat
case PathList( "META-INF", "plexus", "components.xml" )
=> MergeStrategy.first
case x => MergeStrategy.last
}
{code}
KieScanner in Scala fat-jar application does not work due to Plexus
configuration
---------------------------------------------------------------------------------
Key: DROOLS-3277
URL: https://issues.jboss.org/browse/DROOLS-3277
Project: Drools
Issue Type: Feature Request
Components: core engine
Affects Versions: 7.13.0.Final
Reporter: Michael Reynolds
Assignee: Mario Fusco
Priority: Major
Attachments: components.xml, out.log
The configuration required for all the KIE related components wired together with Sisu
and in Plexus is spread out among many files with the same name/location in various
library jars.
The SBT assembly plugin is the standard for building a Scala fat-jar application. When it
multiple versions of the same file when squashing the jars together it attempts to apply a
merge strategy to them. For the Sisu configuration, it is simple enough to apply a
"concat" merge strategy. However, the META-INF/plexus/components.xml cannot be
automatically merged. Unless all the elements are present, various component lookups will
fail when using the KieScanner.
I've provided the following attachments related to this case:
||File||Description||
|out.log|Output of starting the fat-jar application without properly merging the Sisu and
Plexus configuration files|
|components.xml|The merged components.xml file I created that resolves this issue.|
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