[Remove] /iot/services API path

[mapedraza]

With issue #752 and PR #1648 , the usage of API route /iot/services is deprecated, and, eventually, should be removed

Look for #FIXME1649 in the code for references that should be removed

[fgalan]

Look for #FIXME1649 in the code for references that should be removed

15 occurrences in PR #1648

[fgalan]

PR #1648 does a wrapping to use "groups" but internally "services" is still used in the code. Eg:

    callback(null, {
        count: filteredGroups.length,
        services: result
    });

instead of

    callback(null, {
        count: filteredGroups.length,
        groups: result
    });

That should be changed, the same (non-obsolete) term used in the API (groups) should be used internally in the code. The code is more maintainable if API terms and code terms are aligned.

This task should be done as part of this issue or as part of issue #1587 (considering also the alignment with the DB model, so completing alignment API-code-DB).

[fgalan]

Maybe both #1587 and this issue should be addressed together.

[mapedraza]

Maybe both #1587 and this issue should be addressed together.

I agree. When internal datamodels align with DB models, group term should be used. At this point, work made in #1648 will not be useful anymore and code with #FIXME1649 can be deleted.

The following tasks should be addressed:

• Replace internal models used in IoTA logic according to API request data model
• Align database model with API request data model Device and Group datamodels used in API requests differ from data models used internally or in MongoDB #1587
• Generate tool/mechanism to migrate old database models
• Remove code included in PR Add new /iot/groups API route #1648 (FIXME1649)
• Remove /iot/services API path [Remove] /iot/services API path #1649

[fgalan]

Ensure also the following issues (in other repositories) has been accomplished before removing the deprecated routes:

• Add /iot/groups routes to manager iotagent-manager#270
• Change to /iot/groups thinking-cities#150
• https://github.com/telefonicasc/iotp-portal/issues/441
• Remove /iot/services support iotagent-manager#341