[R-pkg-devel] Submission to CRAN when package needs personal data (API key)

On 8 Sep 2018, at 21:02, Joshua Ulrich <josh.m.ulrich at gmail.com> wrote:

Hi Rainer,

On Wed, Sep 5, 2018 at 2:28 AM, Rainer Krug <Rainer at krugs.de> wrote:

Hi

I have a package at GitHub (https://github.com/rkrug/ROriginStamp) which I am
pre[paring for CRAN.

It creates a trusted timestamp using the API fro OriginStamp
(https://originstamp.org/home) which requires an API key. Now this API should
not be made public, as to much traffic through one API key will lead to it?s
blocking.

I have stored the key encrypted in the travis.yml, and the package passes all
tests.

But if I send it to CRAN, it would fail the tests, as the api key is not in
the package itself.

I could disable all tests for CRAN which need the API key, but I think it
would be better tu run the tests there as well (as an additional check to
travis).

My question:

Is there a way of storing the API key encrypted, so that only the CRAN test
servers can decrypt it, or is there another way can steal with this?

I have a similar issue with quantmod.  I need API keys to test some
functionality and I would like the tests run regularly, so I can know
when something breaks without having to wait for a user to report the
change.

I store the API keys in encrypted environment variable in TravisCI,
and I check for those environment variables before running the tests
that require them.

Then I added a cron job on TravisCI to run the build if there hasn't
been a build in the past 24 hours.  That solves the problem adequately
for my purposes without adding any burden to CRAN.  Hopefully it works
for your purposes too.

Best,
Josh

Thanks,

Rainer



--
Rainer M. Krug, PhD (Conservation Ecology, SUN),
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University of Z?rich

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