[gen_html robustness] exception of generating html data unhandled

[JizeZhangPsych]

Source of Problem

in osl_ephys/source_recon/batch.py line 283-288, the following code is not wrapped within the try except block:

• src_report.gen_html_page(reportdir)
• src_report.gen_html_data(config, outdir, subject, reportdir, extra_funcs=extra_funcs)

if error thrown from these two functions, code could end unexpectedly.

Example of unexpected code ending

This is an example where this logic could lead to unexpected behaviour:

1. In source recon step, the file lcmv-parc-raw.fif is generated, but code was stopped by OOM / segmentation fault / SIGINT / out of disk storage before the image freqbands.png could be generated;
2. In the following sign flipping with another python file, when running gen_html_data, the key "parc_freqbands_plot" is within data.pkl (so line 117 is an True) but the png file is non-existing, leading to the following copying throwing an error at line 119 of osl-ephys/report/source_report.py

Solution to the problem:

Wrap osl_ephys/source_recon/batch.py line 285-288 within a new try-except block. It is not recommended to include it into the previous large try-except, as it's a html generation problem rather than failure of the pipeline.

[cgohil8]

Sounds like a reasonable solution. Alternatively the try/except block could be in the report generating functions.