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Manifest attributes in MANIFEST.MF

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Andrey Hihlovskiy edited this page Apr 25, 2014 · 28 revisions

We already programmed manifest attributes in build.gradle. Now we will program manifest attributes in MANIFEST.MF.

  1. Create folder "tutorials/MyOsgiPlugin/src/main/resources/META-INF", create file "MANIFEST.MF" in it, insert code:
Bundle-SymbolicName: abcabc
Bundle-Name: someBundleName
Bundle-Version: 1212
Bundle-Classpath: aaaa,bbbb
Require-Bundle: org.eclipse.jface.text
Bundle-ManifestVersion: 2323
Bnd-LastModified: 8888888888888
Created-By: Batman
Tool: lololo
My-Attribute: test2
  1. Invoke on command line:
gradle build
  1. Open file "tutorials/MyOsgiPlugin/build/libs/MyOsgiPlugin-1.0.0.0.jar", open "META-INF/MANIFEST.MF", it should look like:
Manifest-Version: 1.0
Bundle-SymbolicName: MyOsgiPlugin
Bundle-Name: MyOsgiPlugin
Bundle-Version: 1.0.0.0
Bundle-Classpath: .
Require-Bundle: org.eclipse.jface.text,org.eclipse.osgi,ch.qos.logback
  .classic
Bundle-ManifestVersion: 2
Bnd-LastModified: 1398419098000
My-Attribute: test2
Created-By: 1.8.0_05 (Oracle Corporation)
Tool: Bnd-2.1.0.20130426-122213

Wuff ignores our values for attributes "Bundle-SymbolicName", "Bundle-Name", "Bundle-Version", "Bundle-ManifestVersion", "Bnd-LastModified", "Created-By", "Tool", "Bundle-Classpath". This is intentional: Wuff overwrites the user-supplied attributes with the generated attributes having the same name.

There are three attributes that Wuff merges rather than overwrites: "Require-Bundle", "Import-Package" and "Export-Package". In the example above, "Require-Bundle" contains three values: "org.eclipse.osgi" comes from generated manifest, "ch.qos.logback.classic" comes from "build.gradle" and "org.eclipse.jface.text" comes from MANIFEST.MF.

Note that "My-Attribute" was specified in two places: in "build.gradle" and "MANIFEST.MF". The values of "MANIFEST.MF" overwrite the values of "build.gradle".

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