[TechnicalDebt] Replace use of the rapidjson json library with the nlohmann json library.

[ndp-opendap]

The rapidjson library has a difficult to use API which is made more difficult by it use of "move semantics"

We used rapidjson when we wrote the NgapApi code in modules/dmrpp_module/container/NgapApi.cc

Since then we have added the nlohmann json library which is much easier to use and understand. This is used by the cmr_module to do the CMR JSON stuff.

This ticket is meant to provide a launch point for transitioning away from rapidjson code to nlohmann

This work is, I think, limited to NgapApi.cc but a search for other extant uses within the BES code base needs to be undertaken.

[jgallagher59701]

One way to see how pervasive the old, bad, rapidjson is would be to rename the directory that has that library (I think it's a header library) and then see where make -k shows things that are broken.

[ndp-opendap]

One way to see how pervasive the old, bad, rapidjson is would be to rename the directory that has that library (I think it's a header library) and then see where make -k shows things that are broken.

Yes! Someday (soon) when I can compile our software again I'll be trying that

[ndp-opendap]

Looks like the affected files are:

• bes/modules/fileout_netcdf/history_utils.cc
• bes/modules/fileout_netcdf/FONcTransmitter.cc
• bes/modules/fileout_netcdf/unit-tests/HistoryUtilsTest.cc
• bes/modules/dmrpp_module/ngap_container/NgapApi.cc
• bes/modules/dmrpp_module/ngap_container/NgapApi.h
• bes/modules/dmrpp_module/ngap_container/unit-tests/NgapApiTest.cc