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https://jira.codehaus.org/browse/MNG-5176?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=340374#comment-340374
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Michael Osipov commented on MNG-5176:
-------------------------------------
Actually, it is and the primer of this issue was to improve the duration as
well as the readability of the build timestamp at the end of the build. The
Wikipedia article contains only a condensed view of the standard. I have full
access to the PDF file and it states that durations can be expressed like time
but with the according SI unit for time. I can add the reference if you would
like to see it. See [this BIPM
page|http://www.bipm.org/en/si/si_brochure/chapter4/table6.html] for SI units.
Padding with zeros is only necessary when you have multiple components. In the
case of seconds, you have only one.
So you would go for:
{noformat}
[1 d 01:10 h]
[ 01:02 h]
[ 01:49 min]
[ 22.345 s]
[ 0.912 s]
{noformat}
?
To space and take in account and build times above 24 h are rare, one could
align by the next big string:
{noformat}
[1 d 01:10 h]
[ 01:02 h]
[01:49 min]
[ 22.345 s]
[ 0.912 s]
{noformat}
I am aware of this property, it has one drawback: You cannot you set the
timezone for that. The latter issue exists with the buildnumber plugin too.
> Print build times in an ISO 8601-style manner
> ---------------------------------------------
>
> Key: MNG-5176
> URL: https://jira.codehaus.org/browse/MNG-5176
> Project: Maven 2 & 3
> Issue Type: Improvement
> Components: Logging
> Affects Versions: 2.2.1, 3.0.3
> Environment: Maven 2.2.1 and 3.0.3
> Reporter: Michael Osipov
> Assignee: Michael Osipov
> Fix For: 3.2
>
> Attachments: MNG-5176.patch, MNG-5176.patch
>
>
> The current output of build times is hard to read and does not follow any
> standard. I have patched branch 2.2.x and 3 trunk to follow ISO 8601-style
> date/time formats.
> My patches need less code compared to the current solution. I had the
> following ideas in mind:
> 1. Display times in the same proportional format.
> 2. hour display is fixed to max 24 h as in ISO defined.
> 3. Days are directly integrated, not brain math necessary anymore. Though
> this should be a rare case.
> 3. remove the smallest component if a bigger one is added.
> 4. Easier to parse, predictable output.
> More over, I have changed the finish and total time to ISO too. I did not
> touch the finish time in Maven 2.2.x because it is alphanumeric. I'd rather
> prefer that as total time but this is maybe a matter of taste and harder to
> parse.
> This is a real output:
> {noformat}
> [INFO] Building tar :
> /.amd_mnt/blnn728x/home/osipovmi/Projekte/maven-3/apache-maven/target/apache-maven-3.0.4-SNAPSHOT-bin.tar.gz
> [INFO]
> ------------------------------------------------------------------------
> [INFO] Reactor Summary:
> [INFO]
> [INFO] Apache Maven ...................................... SUCCESS [00:04.732]
> [INFO] Maven Model ....................................... SUCCESS [00:06.332]
> [INFO] Maven Artifact .................................... SUCCESS [00:02.551]
> [INFO] Maven Plugin API .................................. SUCCESS [00:03.855]
> [INFO] Maven Model Builder ............................... SUCCESS [00:06.708]
> [INFO] Maven Settings .................................... SUCCESS [00:02.292]
> [INFO] Maven Settings Builder ............................ SUCCESS [00:02.138]
> [INFO] Maven Repository Metadata Model ................... SUCCESS [00:01.931]
> [INFO] Maven Aether Provider ............................. SUCCESS [00:02.442]
> [INFO] Maven Core ........................................ SUCCESS [00:28.509]
> [INFO] Maven Compat ...................................... SUCCESS [00:20.260]
> [INFO] Maven Embedder .................................... SUCCESS [00:03.478]
> [INFO] Maven Distribution ................................ SUCCESS [00:26.715]
> [INFO]
> ------------------------------------------------------------------------
> [INFO] BUILD SUCCESS
> [INFO]
> ------------------------------------------------------------------------
> [INFO] Total time: 01:52.618
> [INFO] Finished at: 2011-09-19 14:25:24
> [INFO] Final Memory: 36M/144M
> [INFO]
> ------------------------------------------------------------------------
> {noformat}
> A crafted output with all formats would look like this:
> {noformat}
> [INFO] Building tar :
> /.amd_mnt/blnn728x/home/osipovmi/Projekte/maven-3/apache-maven/target/apache-maven-3.0.4-SNAPSHOT-bin.tar.gz
> [INFO]
> ------------------------------------------------------------------------
> [INFO] Reactor Summary:
> [INFO]
> [INFO] Apache Maven ...................................... SUCCESS [1 d 03:04]
> [INFO] Maven Model ....................................... SUCCESS [01:00:06]
> [INFO] Maven Artifact .................................... SUCCESS [00:02.551]
> [INFO] Maven Plugin API .................................. SUCCESS [00:03.855]
> [INFO] Maven Model Builder ............................... SUCCESS [00:06.708]
> [INFO] Maven Settings .................................... SUCCESS [00:02.292]
> [INFO] Maven Settings Builder ............................ SUCCESS [00:02.138]
> [INFO] Maven Repository Metadata Model ................... SUCCESS [00:01.931]
> [INFO] Maven Aether Provider ............................. SUCCESS [00:02.442]
> [INFO] Maven Core ........................................ SUCCESS [00:28.509]
> [INFO] Maven Compat ...................................... SUCCESS [00:20.260]
> [INFO] Maven Embedder .................................... SUCCESS [00:03.478]
> [INFO] Maven Distribution ................................ SUCCESS [00:26.715]
> [INFO]
> ------------------------------------------------------------------------
> [INFO] BUILD SUCCESS
> [INFO]
> ------------------------------------------------------------------------
> [INFO] Total time: 1 d 03:05
> [INFO] Finished at: 2011-09-19 14:25:24
> [INFO] Final Memory: 36M/144M
> [INFO]
> ------------------------------------------------------------------------
> {noformat}
> Since most build are below an hour, they are way easier to read.
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