CGMES export: report multiple model identifiers

[zamarrenolm]

Please check if the PR fulfills these requirements

• The commit message follows our guidelines
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

What kind of change does this PR introduce?

Bug fix

What is the current behavior?

The identifier of the exported model was written in the Report under the key CgmesId.
After the recent refactoring of Report, only the first CgmesId key present in the report could be retrieved, because the exported model identifiers were written as message templates instead of values.

What is the new behavior (if this is a feature change)?
Allow for multiple CgmesId values to be present in the Report output.
The identifiers of the exported model must be retrieved by looking at the message of each report node, instead to its message template:

// Prepare a root report node
ReportNode report = ReportNode
        .newRootReportNode()
        .withMessageTemplate("rootKey", "")
        .build();

// Do the export using the report
cgmNetwork.write(new ExportersServiceLoader(), "CGMES", exportParams, dataSource, report);

// Retrieve all the exported model data from the report
Set<ExportedModel> exportedModelsFromReporter = new HashSet<>();
for (ReportNode n : report.getChildren()) {
    if (CgmesExportUtil.REPORT_NODE_KEY_EXPORTED_CGMES_ID.equals(n.getMessageKey())) {
        n.getValue(CgmesExportUtil.REPORT_VALUE_EXPORTED_CGMES_ID).ifPresent(v -> {
                String subset = n.getValue(CgmesExportUtil.REPORT_VALUE_EXPORTED_CGMES_SUBSET)
                        .map(TypedValue::getValue).map(Object::toString).orElse(null);
                String networkId = n.getValue(CgmesExportUtil.REPORT_VALUE_EXPORTED_CGMES_NETWORK_ID)
                        .map(TypedValue::getValue).map(Object::toString).orElse(null);
                exportedModelsFromReporter.add(new ExportedModel(v.getValue().toString(), subset, networkId));
            }
        );
    }
}

with

private record ExportedModel(String cgmesId, String subset, String networkId) {
}

[olperr1]

@zamarrenolm: In the current state, the PR allows us to retrieve all the ids, but there is nothing to help us know which model they are corresponding to. It would be useful if some other data were also available on each ReportNode to identify its id.

[zamarrenolm]

@zamarrenolm: In the current state, the PR allows us to retrieve all the ids, but there is nothing to help us know which model they are corresponding to. It would be useful if some other data were also available on each ReportNode to identify its id.

I think it would be relatively easy to report the network identifier (to be able to associate the exported uuid with a given network) and the instance file (EQ, SSH, ...). Let me try it ...

[olperr1]

@zamarrenolm: Thanks for your additions.
It looks fine to me.

[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
100.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

All the changes asked by flo-dup were made.