Jason Ginchereau created CB-11022:
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Summary: Adding plugins prepares platforms, which is redunant and
slow
Key: CB-11022
URL: https://issues.apache.org/jira/browse/CB-11022
Project: Apache Cordova
Issue Type: Bug
Components: CordovaLib
Reporter: Jason Ginchereau
For CB-9617, a change was made to automatically do a 'cordova prepare'
operation after adding every plugin. As part of the prepare, all the files from
the project's www directory are re-copied into the platform_www directory. For
a large project with lots of source files, images, and other resources, this
copy operation is potentially time-consuming. And it is redundant and
unnecessary when adding a plugin, because those files do not need to be changed
when adding a plugin.
For a large project with many plugins, this slow redundant operation is
repeated for every plugin, making the first-time build (installing all the
plugins) take a very long time. As an extreme case, a customer reported their
large project (35 plugins, ~150 MB in www) takes about 2 hours to build the
first time. Most of that time is spent repeatedly preparing the platforms after
adding each plugin. The log line that appears to be slow says it is "Generating
config.xml from defaults for platform <platform>", but what it is actually
doing is redundantly copying lots of files from www.
This issue can also be observed at a smaller scale when building the Cordova
mobilespec project, which contains tests for all the core plugins.
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