InfluxDB 2.0 Cloud Support.

[amarendrapramanik]

Description

The current implementation do not support InfluxDB 2.0 Cloud API. Also the InfluxDB-Client-for-Arduino implementation is too heavy for MCU to be implemented.

Solution

No response

Alternatives

No response

Additional context

No response

[mcspr]

Also the InfluxDB-Client-for-Arduino implementation is too heavy for MCU to be implemented.

Supported devices:

• ESP8266 with Arduino core for ESP8266 at least version 3.0.2.
• ESP32 with Arduino core for the ESP32 at least version 2.0.2.

?

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Main requirement seems to be a TLS-enabled client. We run into a couple of problems, regardless of whether we use the lib mentioned above or try to use any available TLS lib (bearssl, wolfssl, etc.)

• ESP needs to run in 160MHZ mode, which is enforced at build time in the currently used SDK; changing it at runtime will always fallback to the build value
• connection buffers need to be around 18KiB at a minimum, 32KiB at a maximum (created per connection); plus ~7KiB of extra task stack that is used to run crypto stuff (shared between clients). we need to severely limit everything else with access to RAM, otherwise we will run out of available RAM at some point (since we have only ~40...50KiB available after booting)

We could reduce required RAM with MFLN extension, but Go implementation does not support it (yet?)

• crypto/tls: customisable max TLS record size golang/go#20420
  (idk whether TLS1.3 version of MFLN could work, though, but our SDK only supports TLS1.2)