[Spies] Provide inter-bundle dependency information in Bundle-Spy

[HannesWell]

Similar to the unpublished (and maybe soon removed Plugin) o.e.core.tools the PDE Bundle Spy should provide information about dependencies between bundles, their required bundles, imported-packages and required capabilities together etc. with the provider).

eclipse-platform/eclipse.platform#787 gives an impression how this could be done, but the details of course can vary.

The Apache Felix Gogo shell (aka. Host OSGi console) shipped with Eclipse also provides such information already:

Find out the bundle-id using the lb command.

g! lb
START LEVEL 6
   ID|State      |Level|Name
    0|Active     |    0|OSGi System Bundle (3.18.600.v20231025-1615)|3.18.600.v20231025-1615
    1|Resolved   |    4|Equinox State and Resolver Compatibility Fragment (1.2.800.v20221116-1440)|1.2.800.v20221116-1440
[...]
 1914|Active     |    4|PDE Core (3.17.200.v20231025-1115)|3.17.200.v20231025-1115
[...]

Required Bundles:

g! inspect requirement osgi.wiring.bundle 1914
org.eclipse.pde.core_3.17.200.v20231025-1115 [1914] requires:
-------------------------------------------------------------
osgi.wiring.bundle; (&(osgi.wiring.bundle=org.eclipse.core.runtime)(&(bundle-version>=3.29.0)(!(bundle-version>=4.0.0)))) resolved by:
   osgi.wiring.bundle; org.eclipse.core.runtime 3.30.0.v20230929-1548 from org.eclipse.core.runtime_3.30.0.v20230929-1548 [1663]
osgi.wiring.bundle; (&(osgi.wiring.bundle=org.eclipse.e4.core.contexts)(&(bundle-version>=1.12.300)(!(bundle-version>=2.0.0)))) resolved by:
   osgi.wiring.bundle; org.eclipse.e4.core.contexts 1.12.400.v20231011-1103 from org.eclipse.e4.core.contexts_1.12.400.v20231011-1103 [1785]
osgi.wiring.bundle; (&(osgi.wiring.bundle=org.eclipse.e4.core.services)(&(bundle-version>=2.4.200)(!(bundle-version>=3.0.0)))) resolved by:
   osgi.wiring.bundle; org.eclipse.e4.core.services 2.4.200.v20231011-1103 from org.eclipse.e4.core.services_2.4.200.v20231011-1103 [1789]
osgi.wiring.bundle; (&(osgi.wiring.bundle=org.eclipse.jdt.core)(&(bundle-version>=3.36.0)(!(bundle-version>=4.0.0)))) resolved by:
   osgi.wiring.bundle; org.eclipse.jdt.core 3.36.0.v20231025-1911 from org.eclipse.jdt.core_3.36.0.v20231025-1911 [1904]
osgi.wiring.bundle; (&(osgi.wiring.bundle=org.eclipse.team.core)(&(bundle-version>=3.10.200)(!(bundle-version>=4.0.0)))) resolved by:
   osgi.wiring.bundle; org.eclipse.team.core 3.10.200.v20230914-0751 from org.eclipse.team.core_3.10.200.v20230914-0751 [1511]
osgi.wiring.bundle; (&(osgi.wiring.bundle=org.eclipse.text)(&(bundle-version>=3.13.100)(!(bundle-version>=4.0.0)))) resolved by:
   osgi.wiring.bundle; org.eclipse.text 3.13.100.v20230801-1334 from org.eclipse.text_3.13.100.v20230801-1334 [916]
osgi.wiring.bundle; (&(osgi.wiring.bundle=org.eclipse.jdt.launching)(&(bundle-version>=3.21.0)(!(bundle-version>=4.0.0)))) resolved by:
   osgi.wiring.bundle; org.eclipse.jdt.launching 3.21.0.v20231026-1205 from org.eclipse.jdt.launching_3.21.0.v20231026-1205 [1908]
osgi.wiring.bundle; (&(osgi.wiring.bundle=org.eclipse.core.filebuffers)(&(bundle-version>=3.8.200)(!(bundle-version>=4.0.0)))) resolved by:
   osgi.wiring.bundle; org.eclipse.core.filebuffers 3.8.200.v20230921-0933 from org.eclipse.core.filebuffers_3.8.200.v20230921-0933 [1537]
osgi.wiring.bundle; (&(osgi.wiring.bundle=org.eclipse.core.variables)(&(bundle-version>=3.6.200)(!(bundle-version>=4.0.0)))) resolved by:
   osgi.wiring.bundle; org.eclipse.core.variables 3.6.200.v20230914-0751 from org.eclipse.core.variables_3.6.200.v20230914-0751 [1473]
osgi.wiring.bundle; (&(osgi.wiring.bundle=org.eclipse.pde.build)(&(bundle-version>=3.12.200)(!(bundle-version>=4.0.0)))) resolved by:
   osgi.wiring.bundle; org.eclipse.pde.build 3.12.200.v20230927-0753 from org.eclipse.pde.build_3.12.200.v20230927-0753 [1702]
osgi.wiring.bundle; (&(osgi.wiring.bundle=org.eclipse.ant.core)(&(bundle-version>=3.7.200)(!(bundle-version>=4.0.0)))) resolved by:
   osgi.wiring.bundle; org.eclipse.ant.core 3.7.200.v20231025-0728 from org.eclipse.ant.core_3.7.200.v20231025-0728 [1889]
osgi.wiring.bundle; (&(osgi.wiring.bundle=org.eclipse.equinox.simpleconfigurator.manipulator)(&(bundle-version>=2.3.0)(!(bundle-version>=3.0.0)))) resolved by:
   osgi.wiring.bundle; org.eclipse.equinox.simpleconfigurator.manipulator 2.3.0.v20230919-1457 from org.eclipse.equinox.simpleconfigurator.manipulator_2.3.0.v20230919-1457 [1564]
osgi.wiring.bundle; (&(osgi.wiring.bundle=org.eclipse.equinox.frameworkadmin)(&(bundle-version>=2.3.0)(!(bundle-version>=3.0.0)))) resolved by:
   osgi.wiring.bundle; org.eclipse.equinox.frameworkadmin 2.3.0.v20230919-1457 from org.eclipse.equinox.frameworkadmin_2.3.0.v20230919-1457 [1549]
osgi.wiring.bundle; (&(osgi.wiring.bundle=org.eclipse.debug.core)(&(bundle-version>=3.21.200)(!(bundle-version>=4.0.0)))) resolved by:
   osgi.wiring.bundle; org.eclipse.debug.core 3.21.200.v20231021-1513 from org.eclipse.debug.core_3.21.200.v20231021-1513 [1875]
osgi.wiring.bundle; (&(osgi.wiring.bundle=org.eclipse.equinox.p2.engine)(&(bundle-version>=2.9.0)(!(bundle-version>=3.0.0)))) resolved by:
   osgi.wiring.bundle; org.eclipse.equinox.p2.engine 2.9.0.v20230921-2011 from org.eclipse.equinox.p2.engine_2.9.0.v20230921-2011 [1555]
osgi.wiring.bundle; (&(osgi.wiring.bundle=org.eclipse.equinox.p2.core)(&(bundle-version>=2.10.200)(!(bundle-version>=3.0.0)))) resolved by:
   osgi.wiring.bundle; org.eclipse.equinox.p2.core 2.10.200.v20230912-1448 from org.eclipse.equinox.p2.core_2.10.200.v20230912-1448 [1348]
osgi.wiring.bundle; (&(osgi.wiring.bundle=org.eclipse.equinox.p2.metadata)(&(bundle-version>=2.8.0)(!(bundle-version>=3.0.0)))) resolved by:
   osgi.wiring.bundle; org.eclipse.equinox.p2.metadata 2.8.0.v20231026-0645 from org.eclipse.equinox.p2.metadata_2.8.0.v20231026-0645 [1898]
osgi.wiring.bundle; (&(osgi.wiring.bundle=org.eclipse.equinox.p2.director)(&(bundle-version>=2.6.200)(!(bundle-version>=3.0.0)))) resolved by:
   osgi.wiring.bundle; org.eclipse.equinox.p2.director 2.6.200.v20231021-1906 from org.eclipse.equinox.p2.director_2.6.200.v20231021-1906 [1877]
osgi.wiring.bundle; (&(osgi.wiring.bundle=org.eclipse.equinox.p2.repository)(&(bundle-version>=2.8.0)(!(bundle-version>=3.0.0)))) resolved by:
   osgi.wiring.bundle; org.eclipse.equinox.p2.repository 2.8.0.v20231026-0645 from org.eclipse.equinox.p2.repository_2.8.0.v20231026-0645 [1899]
osgi.wiring.bundle; (&(osgi.wiring.bundle=org.eclipse.equinox.p2.repository.tools)(&(bundle-version>=2.4.200)(!(bundle-version>=3.0.0)))) resolved by:
   osgi.wiring.bundle; org.eclipse.equinox.p2.repository.tools 2.4.200.v20231021-1906 from org.eclipse.equinox.p2.repository.tools_2.4.200.v20231021-1906 [1879]
osgi.wiring.bundle; (&(osgi.wiring.bundle=org.eclipse.equinox.p2.garbagecollector)(&(bundle-version>=1.3.100)(!(bundle-version>=2.0.0)))) resolved by:
   osgi.wiring.bundle; org.eclipse.equinox.p2.garbagecollector 1.3.100.v20230630-1506 from org.eclipse.equinox.p2.garbagecollector_1.3.100.v20230630-1506 [152]
osgi.wiring.bundle; (&(osgi.wiring.bundle=org.eclipse.equinox.p2.touchpoint.eclipse)(&(bundle-version>=2.4.100)(!(bundle-version>=3.0.0)))) resolved by:
   osgi.wiring.bundle; org.eclipse.equinox.p2.touchpoint.eclipse 2.4.100.v20230630-1506 from org.eclipse.equinox.p2.touchpoint.eclipse_2.4.100.v20230630-1506 [162]
osgi.wiring.bundle; (&(osgi.wiring.bundle=org.eclipse.core.expressions)(&(bundle-version>=3.9.200)(!(bundle-version>=4.0.0)))) resolved by:
   osgi.wiring.bundle; org.eclipse.core.expressions 3.9.200.v20230921-0857 from org.eclipse.core.expressions_3.9.200.v20230921-0857 [1536]
osgi.wiring.bundle; (&(osgi.wiring.bundle=org.eclipse.core.filesystem)(&(bundle-version>=1.10.200)(!(bundle-version>=2.0.0)))) resolved by:
   osgi.wiring.bundle; org.eclipse.core.filesystem 1.10.200.v20230914-0751 from org.eclipse.core.filesystem_1.10.200.v20230914-0751 [1467]

Required Packages

g! inspect requirement osgi.wiring.package 1914
org.eclipse.pde.core_3.17.200.v20231025-1115 [1914] requires:
-------------------------------------------------------------
osgi.wiring.package; (&(osgi.wiring.package=aQute.bnd.build)(&(version>=4.4.0)(!(version>=5.0.0)))) resolved by:
   osgi.wiring.package; aQute.bnd.build 4.4.0 from biz.aQute.bndlib_6.4.1.202306080939 [6]
osgi.wiring.package; (&(osgi.wiring.package=aQute.bnd.build.model)(&(version>=4.2.0)(!(version>=5.0.0)))) resolved by:
   osgi.wiring.package; aQute.bnd.build.model 4.2.0 from biz.aQute.bndlib_6.4.1.202306080939 [6]
osgi.wiring.package; (&(osgi.wiring.package=aQute.bnd.header)(&(version>=2.5.0)(!(version>=3.0.0)))) resolved by:
   osgi.wiring.package; aQute.bnd.header 2.5.0 from biz.aQute.bndlib_6.4.1.202306080939 [6]
osgi.wiring.package; (&(osgi.wiring.package=aQute.bnd.osgi)(&(version>=5.5.0)(!(version>=8.0.0)))) resolved by:
   osgi.wiring.package; aQute.bnd.osgi 5.6.0 from biz.aQute.bndlib_6.4.1.202306080939 [6]
osgi.wiring.package; (&(osgi.wiring.package=aQute.bnd.osgi.repository)(&(version>=3.0.0)(!(version>=4.0.0)))) resolved by:
   osgi.wiring.package; aQute.bnd.osgi.repository 3.0.1 from biz.aQute.bndlib_6.4.1.202306080939 [6]
osgi.wiring.package; (&(osgi.wiring.package=aQute.bnd.osgi.resource)(&(version>=4.3.0)(!(version>=6.0.0)))) resolved by:
   osgi.wiring.package; aQute.bnd.osgi.resource 4.3.0 from biz.aQute.bndlib_6.4.1.202306080939 [6]
osgi.wiring.package; (&(osgi.wiring.package=aQute.bnd.properties)(&(version>=2.0.0)(!(version>=3.0.0)))) resolved by:
   osgi.wiring.package; aQute.bnd.properties 2.0.0 from biz.aQute.bndlib_6.4.1.202306080939 [6]
osgi.wiring.package; (&(osgi.wiring.package=aQute.bnd.service)(&(version>=4.7.0)(!(version>=5.0.0)))) resolved by:
   osgi.wiring.package; aQute.bnd.service 4.7.0 from biz.aQute.bndlib_6.4.1.202306080939 [6]
osgi.wiring.package; (&(osgi.wiring.package=aQute.bnd.version)(&(version>=2.2.0)(!(version>=3.0.0)))) resolved by:
   osgi.wiring.package; aQute.bnd.version 2.2.0 from biz.aQute.bndlib_6.4.1.202306080939 [6]
osgi.wiring.package; (&(osgi.wiring.package=aQute.service.reporter)(&(version>=1.2.0)(!(version>=2.0.0)))) resolved by:
   osgi.wiring.package; aQute.service.reporter 1.2.0 from biz.aQute.bndlib_6.4.1.202306080939 [6]
osgi.wiring.package; (osgi.wiring.package=org.eclipse.equinox.internal.p2.publisher.eclipse) resolved by:
   osgi.wiring.package; org.eclipse.equinox.internal.p2.publisher.eclipse 0.0.0 from org.eclipse.equinox.p2.publisher.eclipse_1.5.200.v20231019-1511 [1845]
osgi.wiring.package; (osgi.wiring.package=org.eclipse.equinox.p2.publisher) resolved by:
   osgi.wiring.package; org.eclipse.equinox.p2.publisher 0.0.0 from org.eclipse.equinox.p2.publisher_1.9.0.v20230921-2011 [1558]
osgi.wiring.package; (osgi.wiring.package=org.eclipse.equinox.p2.publisher.eclipse) resolved by:
   osgi.wiring.package; org.eclipse.equinox.p2.publisher.eclipse 0.0.0 from org.eclipse.equinox.p2.publisher.eclipse_1.5.200.v20231019-1511 [1845]
osgi.wiring.package; (&(osgi.wiring.package=org.osgi.service.repository)(&(version>=1.1.0)(!(version>=2.0.0)))) resolved by:
   osgi.wiring.package; org.osgi.service.repository 1.1.0 from org.osgi.service.repository_1.1.0.201505202024 [340]
osgi.wiring.package; (&(osgi.wiring.package=org.osgi.util.promise)(&(version>=1.3.0)(!(version>=2.0.0)))) resolved by:
   osgi.wiring.package; org.osgi.util.promise 1.3.0 from org.osgi.util.promise_1.3.0.202212101352 [347]

other namespaces are of course also possible.

[opcoach]

May be this will be handled by the osgifx external spy ... which is really cool .. see #371