HTTP error 502 when downloading Vietnam's json data

[biocyberman]

I am investigating the error. It seems that the return data is not fully validated JSON. Data can be viewed directly via browser but failed when downloaded with fromJSON. For example:

library(purrr)
library(tidyr)
library(lubridate)
library(stringr)
library(stringi)
library(jsonlite)
data_urls = list(
      "provinces" = "https://covid.ncsc.gov.vn/api/v3/covid/provinces",
      "case_by_time" = "https://covid.ncsc.gov.vn/api/v3/covid/provinces?filter_type=case_by_time"
    )
json_reader <- function(file, verbose = FALSE, ...) {
        if (verbose) {
          message("Downloading data from ", file)
          data <- fromJSON(file, ...)
        } else {
          data <- suppressWarnings(
            suppressMessages(
              fromJSON(file, simplifyDataFrame = TRUE, flatten = TRUE)
            )
          )
        }
        return(tibble(data))
      } 
data = map(data_urls, json_reader)

Gave: Error in open.connection(con, "rb") : HTTP error 502.

[github-actions]

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[RichardMN]

Looking at it and having tried a few variant URLs I think this may be a glitch upstream on the server end. I get 502 for just about any URL going to the API directory, though not to the top level one, which could be consistent with the API urls being redirected to a specific server or port and that port failing. (E.g., https://bobcares.com/blog/502-bad-gateway-nginx/) I think we may wait twelve hours and see. (Though when this happened with Germany I think I wrote my first implementation of a JSON downloader and had it running roughly in time for the problem to fix itself upstream.)

[biocyberman]

I reported to NCSC colleages.

[seabbs]

Looks like this may have cleared up on the latest automated check so sounds like it was server side.

[biocyberman]

The problem is gone even though I haven't got a reply from NCSC :)

[trilwu]

Hello from NCSC. It is an honor for us to have this data contributed to your project.

The stable domain is covid19.ncsc.gov.vn, the old URL: covid.ncsc.gov.vn (beta) is now deprecated. We have reopened for a few days so you can update the new URL. I made a pull request here #427