Neil Bartlett created FELIX-5770:
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Summary: Improve usability and extensibility of SCR commands
Key: FELIX-5770
URL: https://issues.apache.org/jira/browse/FELIX-5770
Project: Felix
Issue Type: Improvement
Components: Declarative Services (SCR)
Affects Versions: scr-2.0.14
Reporter: Neil Bartlett
The scr:list and scr:info commands are hard to use and not as extensible as
they could be.
In terms of usability, the output of scr:list is particularly hard to follow,
with two interleaved tables at different indent levels, i.e.:
{noformat}
g! scr:list
BundleId Component Name Default State
Component Id State PIDs (Factory PID)
[ 1] com.effectiveosgi.rt.aws.impl.S3ObjectConverter enabled
[ 0] [active ]
[ 1] com.effectiveosgi.rt.aws.s3 enabled
{noformat}
It is not very clear what the numbers 0 and 1 represent in each case!
Also the commands format their output internally, which does not allow the
formatting to be reused. If the commands simply return DTO objects to the Gogo
shell and then implement a Converter service to format them, then the
formatting can be reused by other commands.
Also the state "SATISFIED" is very confusing when a component throws an
exception in its activator. This is partly a problem with the OSGi spec pre-R7.
The release of OSGi R7 gives us an opportunity to overhaul these commands and
improve the formatting. For a proposed reimplementation see
https://github.com/apache/felix/pull/130
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