Validation, completeness and consistency checks before writing netcdf

[mhidas]

Fixes #14, implementing the apporach described there (https://github.com/aodn/aodn-netcdf-tools/issues/14#issuecomment-438877417)

[codecov[bot]]

Codecov Report

Merging #30 into master will increase coverage by 15.34%. The diff coverage is 100%.

@@             Coverage Diff             @@
##           master      #30       +/-   ##
===========================================
+ Coverage   76.47%   91.81%   +15.34%     
===========================================
  Files           2        2               
  Lines         204      171       -33     
  Branches       41       29       -12     
===========================================
+ Hits          156      157        +1     
+ Misses         40       11       -29     
+ Partials        8        3        -5

Impacted Files	Coverage Δ
ncwriter/template.py	90.27% <100%> (+15.54%)	:arrow_up:
ncwriter/schema.py	100% <100%> (ø)	:arrow_up:

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[mhidas]

I've added an example script to better demonstrate how this works.

[mhidas]

@lbesnard @bpasquer @ggalibert @ocehugo @lwgordonimos I'm going to merge this so we can build it and it's easier to try it out. Feel free to review and comment anyway. There's obviously more work to do, but it should start to be useable in a basic way.

[mhidas]

You can just pip install the wheel from Jenkins: https://jenkins.aodn.org.au/view/ncwriter/job/ncwriter_build/3/artifact/dist/ncwriter-0.0.6-py2-none-any.whl

[ghost]

@mhidas the following mechanism would be more appropriate for checking things like the numpy types:

https://lat.sk/2017/03/custom-json-schema-type-validator-format-python/ https://python-jsonschema.readthedocs.io/en/latest/validate/#jsonschema.FormatChecker