How to escape ${var} in parameter value

[franky4u]

I've a class test.yml with the following def:
parameters:
url: http://my.domain.com/tst/do?nr=${nr}

${nr} is not a reclass variable just a normal string which should be passed to app...
How to escape ${nr} in parameter string? (e.g. ${nr} or similar)
The error I got:
reclass-salt --pillar node1
Traceback (most recent call last):
File "/usr/bin/reclass-salt", line 9, in
load_entry_point('reclass==1.4.1', 'console_scripts', 'reclass-salt')()
File "build/bdist.linux-x86_64/egg/reclass/adapters/salt.py", line 105, in cli
File "build/bdist.linux-x86_64/egg/reclass/adapters/salt.py", line 38, in ext_pillar
File "build/bdist.linux-x86_64/egg/reclass/core.py", line 136, in nodeinfo
File "build/bdist.linux-x86_64/egg/reclass/core.py", line 122, in _nodeinfo
File "build/bdist.linux-x86_64/egg/reclass/datatypes/entity.py", line 65, in interpolate
File "build/bdist.linux-x86_64/egg/reclass/datatypes/parameters.py", line 180, in interpolate
File "build/bdist.linux-x86_64/egg/reclass/datatypes/parameters.py", line 219, in _interpolate_inner
AttributeError: 'UndefinedVariableError' object has no attribute 'var'

[madduck]

I have not catered for this, I don't think. But it shouldn't be hard to add an escape handler.

[franky4u]

Hi Martin,

Thx for the reply. I’m not very good in python – so I want to ask you to invest some more of your time in your splendid product.

Do you think it’s possible for you to fix that?

Best regards
Franky

---

Frank Stuppy
ITERGO Informationstechnologie GmbH
ERV Basisinfrastruktur (PEBE M)
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Von: martin f. krafft [mailto:[email protected]]
Gesendet: Dienstag, 2. August 2016 20:40
An: madduck/reclass [email protected]
Cc: Stuppy Frank [email protected]; Author [email protected]
Betreff: Re: [madduck/reclass] How to escape ${var} in parameter value (#55)

I have not catered for this, I don't think. But it shouldn't be hard to add an escape handler.

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[madduck]

Not anytime soon. I am totally busy elsewhere after I've funding for reclass has been removed.

[lottspot]

I can look into implementing this in my fork. I'll open a PR back to upstream if I produce anything worth looking at.

[Sjd-Risca]

I agree with this problem, but how would you solve it?

I suppose you could insert an escape like \${var}, but what should you type if you'd need to write exactly \ followed instead by a variable substitution?

Maybe it could be define by the following rule: is possible to escape a variable substitution if it is placed a backslash before the dollar, but is you'd need to post a backslash before a variable substitution you should place again a backslash before it.

[lottspot]

Haven't had time to circle back to this issue yet, and a couple other features have come up which we're looking at with priority. PRs are welcome in the meantime.

[eburghar]

We are doing this way:

parameters:
  dollar: '$' # escaping
  url: http://my.domain.com/tst/do?nr=${dollar}{nr}