GitHub user achristianson opened a pull request:
https://github.com/apache/nifi-minifi-cpp/pull/188
MINIFICPP-49 Added initial implementation of NiFi expression language
This implementation covers core language syntax such as embedding
${expressions}, referencing attributes, calling functions ${expr:toUpper()},
function arguments, quoted attribute IDs.
It has a very minimal implementation of functions (hostname() and
toUpper()), and minimal integration with processor properties (PutFile
directory and InvokeHTTP URL). The intent is to expand coverage and integration
over future commits.
It is implemented as an extension and can be entirely disabled at compile
time with no memory or compute impact in the resulting binary when compared
with before this PR. The cmake code is somewhat, but not much, different than
other extensions due to the API touching ProcessContext.
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You can merge this pull request into a Git repository by running:
$ git pull https://github.com/achristianson/nifi-minifi-cpp MINIFICPP-49
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/nifi-minifi-cpp/pull/188.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #188
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commit ebfdb2666db68ea5149c344caf762ea3165d10d4
Author: Andy I. Christianson <a...@andyic.org>
Date: 2017-11-08T21:33:55Z
MINIFICPP-49 Added initial implementation of NiFi expression language
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