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[cross-project-issues-dev] Weird p2 install behavior: doesn't take "mandatory" attribute into account
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Hi all,
we've just noticed a weird behavior of p2 during installation.
Here are the steps to reproduce:
- Install the bare 4.5-M4 SDK [1].
Note that it does not contain any bundles from Eclipse Code
Recommenders, Aether, or m2e.
- Next, install the latest version of "Code Recommenders for Java
Developers" from [2]
This installs all the bundles from Code Recommenders, some bundles from
Aether (which are made available through [2]) and(!) the bundle
org.eclipse.m2e.maven.runtime from [3], the update site pre-configured
by 4.5 M4.
And herein lies the problem:
> osgi> ss recommenders
> "Framework is launched."
>
>
> id State Bundle
> 263 INSTALLED org.eclipse.recommenders.apidocs_2.1.12.v20141202-0751
> 264 INSTALLED org.eclipse.recommenders.apidocs.rcp_2.1.12.v20141202-0751
> 265 INSTALLED org.eclipse.recommenders.calls_2.1.12.v20141202-0751
> 266 INSTALLED org.eclipse.recommenders.calls.rcp_2.1.12.v20141202-0751
> 267 STARTING org.eclipse.recommenders.chain.rcp_2.1.12.v20141202-0751
> 268 STARTING org.eclipse.recommenders.completion.rcp_2.1.12.v20141202-0751
> 269 STARTING org.eclipse.recommenders.injection_2.1.12.v20141202-0751
> 270 RESOLVED org.eclipse.recommenders.jayes_2.1.12.v20141202-0751
> 271 RESOLVED org.eclipse.recommenders.jayes.io_2.1.12.v20141202-0751
> 272 RESOLVED org.eclipse.recommenders.jdt_2.1.12.v20141217-0920
> 273 INSTALLED org.eclipse.recommenders.models_2.1.12.v20141211-1032
> 274 INSTALLED org.eclipse.recommenders.models.rcp_2.1.12.v20141203-0852
> 275 RESOLVED org.eclipse.recommenders.net_2.1.12.v20141202-0751
> 276 INSTALLED org.eclipse.recommenders.overrides_2.1.12.v20141202-0751
> 277 INSTALLED org.eclipse.recommenders.overrides.rcp_2.1.12.v20141202-0751
> 278 STARTING org.eclipse.recommenders.rcp_2.1.12.v20141202-0751
> 279 RESOLVED org.eclipse.recommenders.subwords.rcp_2.1.12.v20141202-0751
> 280 RESOLVED org.eclipse.recommenders.utils_2.1.12.v20141211-1252
Code Recommenders is totally unusable.
The root cause is that it cannot resolve some package imports of
org.eclipse.aether, even though the org.eclipse.aether.api bundle is
present on the Code Recommenders update site [2].
> osgi> diag 273
> org.eclipse.recommenders.models [273]
> Unresolved requirement: Import-Package: org.apache.maven.repository.internal; version="[3.1.0,3.2.0)"
> -> Export-Package: org.apache.maven.repository.internal; bundle-symbolic-name="org.eclipse.aether.maven"; bundle-version="3.1.0.v20140706-2237"; version="3.1.0"; uses:="com.google.inject,javax.inject,org.eclipse.aether,org.eclipse.aether.artifact,org.eclipse.aether.deployment,org.eclipse.aether.impl,org.eclipse.aether.installation,org.eclipse.aether.repository,org.eclipse.aether.resolution,org.eclipse.aether.spi.locator,org.eclipse.aether.spi.log"
> org.eclipse.aether.maven [255]
> Unresolved requirement: Import-Package: org.eclipse.aether; version="[0.9.1,1.1.0)"
This is due to the fact that p2 has installed the bundle
org.eclipse.m2e.maven.runtime instead as a provider of the package
org.eclipse.aether:
> osgi> p org.eclipse.aether
> osgi.wiring.package; bundle-symbolic-name="org.eclipse.m2e.maven.runtime"; bundle-version:Version="1.6.0.20141217-0916"; provider="m2e"; version:Version="1.0.0.v20140518"; osgi.wiring.package="org.eclipse.aether"; mandatory:="provider"<org.eclipse.m2e.maven.runtime_1.6.0.20141217-0916 [261]>
But this bundle is not a valid substitute for the org.eclipse.aether.api
bundle, due to the mandatory provider attribute of "m2e".
Is this a bug in p2? IMHO, p2 should be able to detect that
org.eclipse.m2e.maven.runtime does not provide the necessary package for
the bundle org.eclipse.aether.maven to import, as the latter's
Import-Package does not use provider="m2e".
FWIW, for the history of the provider="m2e" attribute added [4]
precisely to avoid these kind of wiring problems, see Bug 403243 [5].
Any insights as to why p2 behaves the way it does are greatly appreciated.
Best wishes,
Andreas
[1]
<http://download.eclipse.org/eclipse/downloads/drops4/S-4.5M4-201412102000/>
[2] <http://download.eclipse.org/recommenders/updates/head/>
[3] <http://download.eclipse.org/releases/mars>
[4]
<https://git.eclipse.org/c/m2e/m2e-core.git/commit/m2e-maven-runtime/org.eclipse.m2e.maven.runtime/pom.xml?id=7e198c6ae5cffbd6fc45e0cb3b54492123d7e2e4>
[5] <https://bugs.eclipse.org/bugs/show_bug.cgi?id=403243>
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