Export of bndrun fails but existing and calculated runbundles are identical

[njbartlett]

Bnd 5.0.1 cannot build the enRoute Quickstart project.

I created a sample project as follows:

$ mvn -B org.apache.maven.plugins:maven-archetype-plugin:3.0.1:generate \
    -DarchetypeGroupId=org.osgi.enroute.archetype \
    -DarchetypeArtifactId=project \
    -DarchetypeVersion=7.0.0 \
    -DgroupId=org.example \
    -DartifactId=example \
    -Dversion=1.0.0-SNAPSHOT \
    -Dpackage=org.example
$ cd example

I edited pom.xml to change <bnd.version>4.1.0</bnd.version> to 5.0.1 and then ran mvn clean verify and it failed on the export goal:

[INFO] --- bnd-export-maven-plugin:5.0.1:export (default) @ app ---
[ERROR] Error   : Fail on changes set to true (--xchange,-x) and there are changes
[ERROR] Error   :    Existing runbundles   [org.apache.felix.scr;version='[2.1.10,2.1.11)', org.example.impl;version='[1.0.0,1.0.1)']
[ERROR] Error   :    Calculated runbundles [org.apache.felix.scr;version='[2.1.10,2.1.11)', org.example.impl;version='[1.0.0,1.0.1)']

Note that the existing and calculated runbundles list are identical.

[njbartlett]

NB the same bug exists in 5.1.0-SNAPSHOT and 5.0.0.

[njbartlett]

Sorry the bug is not quite reproducible as described, I missed the resolve step (though the error message from the export is very misleading).

I still think there is a problem but it manifests in a more complex project, I will try again to produce a reproducible example.

[jmini]

Even without changing the version from 4.1.0 to 5.2.0, I get an error when running the mvn clean install on the project generated by the archetype-generator:

[INFO] --- bnd-export-maven-plugin:4.1.0:export (default) @ app ---
[ERROR] Error   : The runbundles have changed. Failing the build!
Was: null
Is: \
	org.apache.felix.scr;version='[2.1.10,2.1.11)',\
	org.example.impl;version='[1.0.0,1.0.1)'

Tested with (mvn -version):

Apache Maven 3.6.3 (cecedd343002696d0abb50b32b541b8a6ba2883f)
Maven home: /___/maven/3.6.3_1/libexec
Java version: 1.8.0_202, vendor: Azul Systems, Inc., runtime: /Users/___/.sdkman/candidates/java/8.0.202-zulu/jre
Default locale: en_GB, platform encoding: UTF-8
OS name: "mac os x", version: "10.15.2", arch: "x86_64", family: "mac"

@njbartlett : can you explain what you mean with "I missed the resolve step"

[jmini]

I found my solution in eclipse-osgi-technology/osgi.enroute#99, as explained in the linked documentation the OSGi Resolving step is needed. With maven:

mvn -pl app -am  bnd-indexer:index \
    bnd-indexer:index@test-index \
    bnd-resolver:resolve package

---

This adds following lines to the app.bndrun:

diff --git a/app/app.bndrun b/app/app.bndrun
index 1b66a66..d66d3ed 100644
--- a/app/app.bndrun
+++ b/app/app.bndrun
@@ -6,4 +6,7 @@ index: target/index.xml;name="app"
 -runfw: org.eclipse.osgi
 -runee: JavaSE-1.8
 
--resolve.effective: active
\ No newline at end of file
+-resolve.effective: active
+-runbundles: \
+       org.apache.felix.scr;version='[2.1.10,2.1.11)',\
+       org.example.impl;version='[1.0.0,1.0.1)'

[jmini]

The error message from the export is very misleading

I agree with @njbartlett here.

[INFO] --- bnd-export-maven-plugin:5.2.0:export (default) @ app ---
[ERROR] Error   : Fail on changes set to true (--xchange,-x) and there are changes
[ERROR] Error   :    Existing runbundles   [org.apache.felix.scr;version='[2.1.10,2.1.11)', org.example.impl;version='[1.0.0,1.0.1)']
[ERROR] Error   :    Calculated runbundles [org.apache.felix.scr;version='[2.1.10,2.1.11)', org.example.impl;version='[1.0.0,1.0.1)']

The Existing runbundles line is not what is defined in the app.bndrun file. No matter if it is empty (like was is generated by the archetype-generator) or if you introduce a manual change (like an other version) in the app.bndrun file.

[jmini]

The issue is fixed with version 5.3.0. Output:

[INFO] --- bnd-export-maven-plugin:5.3.0:export (default) @ app ---
[ERROR] Error   : Fail on changes set to true (--xchange,-x) and there are changes
[ERROR] Error   :    Existing runbundles   null
[ERROR] Error   :    Calculated runbundles [org.apache.felix.scr;version='[2.1.10,2.1.11)', org.enroutexample.impl;version='[1.0.0,1.0.1)']