Use Jackson (instead of Moshi) as the JSON parser library

[lxhoan]

Currently JSON parser in influxdb-java is Moshi. However we are going to support MessgagePack format (issue #389).
The Retrofit converter (referred to in Retrofit wiki page) for MessagePack is https://github.com/komamitsu/retrofit-converter-msgpack

This convertor depends on Jackson. To ensure the consistency we should switch to Jackson as well
(Moreover, seems we can also consider to drop JSON in influxdb-java due to some limitations of JSON, refer to this influxdb Proposal: Stop using JSON as the standard response format for more information)

[majst01]

Hi Hoan,

we should put this into the 3.x milestone, because dropping json support means dropping support for influxdb versions < 1.4 which would be a major change from the user perspective.

[lxhoan]

Hi Stefan,

(Moreover, seems we can also consider to drop JSON in influxdb-java due to some limitations of JSON, refer to this influxdb Proposal: Stop using JSON as the standard response format for more information)

This sentence is a proposal and not in the scope of this issue.

Basically this issue is to switch to Jackson only (for MessagePack and JSON), we are not going to drop JSON in 2.12

[majst01]

On question, why do we need a json deserializer at all if we switch to messagepack ?
https://github.com/msgpack/msgpack-java for example does not have any external dependencies, which for me would be a perfect fit for a core library usage as in our case.

[majst01]

Who decided that ?

[lxhoan]

https://github.com/msgpack/msgpack-java for example does not have any external dependencies, which for me would be a perfect fit for a core library usage as in our case.

This msgpack-core does not have object binding, and this library also suggests we had best use jackson-databind (which depends on jackson-core) for object binding (you can check this https://github.com/msgpack/msgpack-java/blob/develop/msgpack-jackson/README.md)

[lxhoan]

closed since I will implement a MessagePack retrofit convertor for influxdb-java