R package requirement - Fail gracefully with no connection

[ababaian]

Dear maintainer,
Please see the problems shown on
https://cran.r-project.org/web/checks/check_results_palmid.html.
Please correct before 2022-11-30 to safely retain your package on CRAN.
It seems we need to remind you of the CRAN policy:
'Packages which use Internet resources should fail gracefully with an informative message
if the resource is not available or has changed (and not give a check warning nor error).'

This needs correction whether or not the resource recovers.

The CRAN Team

[ababaian]

Version: 0.0.3
Check: examples
Result: ERROR
Running examples in ‘palmid-Ex.R’ failed
The error most likely occurred in:

> ### Name: get.tax
> ### Title: get.tax
> ### Aliases: get.tax
> ### Keywords: palmdb palmid taxonomy
>
> ### ** Examples
>
> con <- SerratusConnect()
Error in postgresqlNewConnection(dbDriver(drv), ...) :
 RPosgreSQL error: could not connect public_reader@serratus-aurora-20210406.cluster-ro-ccz9y6yshbls.us-east-1.rds.amazonaws.com:5432 on dbname "summary": could not translate host name "serratus-aurora-20210406.cluster-ro-ccz9y6yshbls.us-east-1.rds.amazonaws.com" to address: Name or service not known
Calls: SerratusConnect ... <Anonymous> -> <Anonymous> -> postgresqlNewConnection
Execution halted

Flavor: r-devel-linux-x86_64-fedora-clang

[ababaian]

All the functions which make a SQL server call (i.e. every Connection function) needs a graceful exit with an informative output. This then has to go through CRAN submission for an update to version.