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https://issues.apache.org/jira/browse/MNG-6310?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16515575#comment-16515575
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Brett Randall edited comment on MNG-6310 at 6/18/18 10:37 AM:
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Well you can work-around this, for dependency resolution/download at least, by
reverting to the standard JVM system-properties. So you can toggle proxy-mode
on/off in your shell via {{MAVEN_OPTS}}:
{{export MAVEN_OPTS="-Dhttp.proxyHost=my-proxy-server -Dhttp.proxyPort=80
-Dhttp.nonProxyHosts=\*.my.org -Dhttps.proxyHost=my-proxy-server
-Dhttps.proxyPort=80 -Dhttps.nonProxyHosts=\*.my.org"}}
Which works - the issue being that it takes an approach counter to the
Maven-way to do proxies in the documentation (via {{settings.xml}}), and may
have other side-effects. Maybe a doc-update would suffice:
* [https://maven.apache.org/guides/mini/guide-proxies.html]
* [https://maven.apache.org/settings.html#Proxies]
Aside: this is precisely the approach recommended in Gradle, and works there
with identical values in {{GRADLE_OPTS}}, but they don't mention in their docs,
only the sysprops themselves:
[https://docs.gradle.org/current/userguide/build_environment.html#sec:accessing_the_web_via_a_proxy]
> The best and simplest solution is to use git and put things in .m2/repository
I don't following how doing anything with the {{localRepository}} will help.
> use different branches for the different environments
I'd consider this as a very last resort - should not need branches for
build-environment control. A simple script which takes a simple look at the
environment and sets some variable, or using some existing OS variable such as
{{http_proxy}}/{{https_proxy}} should be able to enable or disable proxies.
was (Author: brett_s_r):
Well you can work-around this, for dependency resolution/download at least, by
reverting to the standard JVM system-properties. So you can toggle proxy-mode
on/off in your shell via {{MAVEN_OPTS}}:
{{export MAVEN_OPTS="-Dhttp.proxyHost=my-proxy-server -Dhttp.proxyPort=80
-Dhttp.nonProxyHosts=*.my.org -Dhttps.proxyHost=my-proxy-server
-Dhttps.proxyPort=80 -Dhttps.nonProxyHosts=*.my.org"}}
Which works - the issue being that it takes an approach counter to the
Maven-way to do proxies in the documentation (via {{settings.xml}}), and may
have other side-effects. Maybe a doc-update would suffice:
* [https://maven.apache.org/guides/mini/guide-proxies.html]
* [https://maven.apache.org/settings.html#Proxies]
Aside: this is precisely the approach recommended in Gradle, and works there
with identical values in {{GRADLE_OPTS}}, but they don't mention in their docs,
only the sysprops themselves:
[https://docs.gradle.org/current/userguide/build_environment.html#sec:accessing_the_web_via_a_proxy]
> The best and simplest solution is to use git and put things in .m2/repository
I don't following how doing anything with the {{localRepository}} will help.
> use different branches for the different environments
I'd consider this as a very last resort - should not need branches for
build-environment control. A simple script which takes a simple look at the
environment and sets some variable, or using some existing OS variable such as
{{http_proxy}}/{{https_proxy}} should be able to enable or disable proxies.
> settings.xml allow proxy activation by expression
> -------------------------------------------------
>
> Key: MNG-6310
> URL: https://issues.apache.org/jira/browse/MNG-6310
> Project: Maven
> Issue Type: New Feature
> Components: Bootstrap & Build
> Affects Versions: 3.5.2
> Reporter: Brett Randall
> Priority: Minor
>
> Currently it appears that {{settings.xml}} proxies can only be activated via
> a boolean {{active}} element, which does not appear to be evaluated, so you
> cannot use a property (e.g. set by a profile), nor a system or environment
> property.
> This comes up a lot on discussions from developers trying to automate whether
> Maven's proxies are enabled or not, based on a system or environment property
> etc.
> Possible solutions:
> * Change the model for (generate) {{Proxy.active}} allowing an expression to
> then be evaluated.
> * Copy {{profiles}} approach and add an {{<activation>>}} element, but this
> requires a settings schema rev.
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