Ocean+ Habitats

Setup

Install and configure dependencies
- bundle install
- yarn install
- Obtain latest .env file from Lastpass
Setup database
- bundle exec rake db:drop db:create db:migrate
- bundle exec rake db:seed
If you simply want to regenerate your statistics, you don't have to drop your database. Just run rake import:refresh instead.

Data

We are still trying to see if it is feasible to generate map tiles and data dynamically using Carto and in the meantime we are using static data.

Data is fetched from CartoDB using the Carto module defined in lib/modules. Some details about the layers in Carto are in config/habitats.yml.

At the moment static data is provided related to the protected areas coverage. Ideally, the protected areas coverage data should always be dynamically generated, as this depends on the WDPA release which is updated every month.

Habitats data changes less often, so the coverage calculations are stored in the Habitat object. When the data changes, a new calculation process should be performed using the calculate_global_coverage method in the Habitat model.

Old coverage data is stored within lib/data/countries for the various habitats. The new coverage data can be found within lib/data/habitat_coverage_protection/<habitat>_country_output.csv

Redlist data for the various species is store in lib/data/iucn_redlist. If you need to update just the occurrences of each species run rake import:occurrences.

Testing

Testing is done with RSpec and FactoryBot. To run all tests, run bundle exec rspec

To lint your factories, run rake factory_bot:lint

CSV downloads

Generating zip downloads of CSVS for habitat statistics in each country, can be done simply via rake generate:national_csvs, which are dumped into public/downloads/national and are labelled according to their ISO3 code.
Global statistics are provided as a prefab zip in the same folder

Statistics updates

High level update overview

Pull latest from main and ensure develop up to date with main.
Checkout your stats update branch e.g. git checkout -b chore/update-statistics-2022-01 from develop.
Pull in country stats to lib/data/habitat_coverage_protection/country/*.csv.
Check CSV formatting is correct, especially headers.
Update habitats.yml with total_area and protected_area from global stats.
Check whether you need to do anything else with O+ team.
Check the documentation is still relevant, and update if neccessary.
Commit everything and push to GitHub. Then create a PR and review it yourself for any mistakes.
Merge your update into develop.
Pull down your merge from develop and return to develop branch.
Checkout a release branch e.g. git checkout -b release-1.4.2
Update the CHANGELOG.md following previous examples of format.
Commit and push to GitHub.
Return to main and merge release into main e.g. git merge --no-ff release-1.4.2.
Push to GitHub.
Go to GitHub releases and draft a new release .
Come back to terminal and deploy with pre-deploy task for habitat stats refresh e.g. bundle exec cap production deploy TASK=import:refresh.
That's it, you're done. But go and check everything is working.

Low-level overview

The current procedure for updating statistics is as follows:

Obtain the global and country statistics from the Ocean Plus Habitats team.
Ensure the country statistics CSVs conform to the format: <habitat-type><plural-modifier>_country_output_<YYYY>-<MM>-01.csv. I.e. ensure that the match the current format within lib/data/habitat_coverage_protection/country/*.csv.

🆘

If received over Slack, you can quickly save to the simplest location on disk possible (as there is currently no "download all") and then move all by command line e.g. `mv ~/Desktop/country01-01.csv lib/data/habitat_coverage_protection/country/`.

In each CSV, check that the columns are correct and that the data format appears to be the same according to previous months. Most commonly, you will need to rename "iso3" to "iso3" as the ISO column in each CSV.

As of writing, the global statistics needs to be copied in from each CSV provided into the corresponding habitat within config/habitats.yml. Previously, this data would have been calculated automatically based on the country statistics. But due to inaccuracies caused (perhaps) by borders and non-national areas not being included within the counts, we currently depend on the data being made available in the habitats YAML file.

Copy in the total_area and protected_area from each CSV into each habitat in config/habitats.yml.
Finally, update the CHANGELOG.md with a minor version increment e.g. 1.3.4 -> 1.3.5. Add a suitable line within the file to describe changes that have been applied in this release. Be sure to check whether any commits have since been made that will become part of main that might be included in this release. If that is so, then you may need to figure out the most appropriate version, and add further change notes.

That is everything. If you are working from main, then make sure you git checkout -b chore/update-statistics-<YYYY>-<MM> and git push origin <name of branch>.

Push the changes, (hopefully from a chore branch) to origin, do a self-review and merge them into main.
Create a new release via Github and copy the format of previous releases. The version starts with v and the title does not.

Once everything is complete, you are ready to deploy. We will deploy using TASK hook to trigger the import:refresh task before finishing the deployment. The reason we do this is to ensure that statistics do not change if the deployment fails for some reason. The deployment TASK hook has this functionality.

Ensure you have the latest main with git checkout main; git pull origin main
Deploy with bundle exec cap production deploy TASK=import:refresh

Update Redlist species timestamp

To update the timestmap, just run bundle exec rake import:update_redlist_timestamp on the server. You can also run bundle exec cap production deploy TASK=import:update_redlist_timestamp to do this from your own machine, but it will include a new deploy.

unepwcmc/ocean-plus-habitats