sched package helper functions

Here we present some functions, that may ease the usage of the sched package, or serve related purposes.

make_post_request()

This function facilitates the creation of Request object for a POST request.

Here is an example:

my_url <- sched::URL$new("https://httpbin.org/anything")
my_request <- sched::make_post_request(my_url,
                                       body = "{\"some_key\": \"my_value\"}",
                                       mime = "application/json")

The Request object can then be used inside an URL request function:

res <- sched::get_url_request_result(my_request)
res$getContent()
#> NULL

get_url_request_result()

This function is a plain URL requester, that do not use the scheduling system of the package. It is presented here as a convenience.

The function takes a sched::Request object as input, along with standard parameters like:

  • The user agent.
  • A flag to enable/disable SSL verify peer. Enabled by default.
  • A flag to enable/disable binary mode. Disabled by default.

Here is an example of usage:

my_url <- sched::URL$new("https://httpbin.org/get")
my_request <- sched::Request$new(my_url)
sched::get_url_request_result(my_request)
#> <RequestResult>
#>   Public:
#>     clone: function (deep = FALSE) 
#>     getContent: function () 
#>     getErrMsg: function () 
#>     getLocation: function () 
#>     getRetry: function () 
#>     getRetryAfter: function () 
#>     getStatus: function () 
#>     initialize: function (content = NULL, retry = FALSE, err_msg = NULL, status = 0, 
#>     processRequestErrors: function () 
#>   Private:
#>     addErrMsg: function (msg) 
#>     content: NULL
#>     err_msg: Error when retrieving URL content
#>     location: NULL
#>     retry: FALSE
#>     retry_after: NULL
#>     status: 404
#>     status_msg: