download assets from earthdata over https using bearer tokens

NOTE: This should be used primarily as a fallback mechanism! EarthData Cloud resources are often best accessed directly over HTTPS without download. This allows subsets to be extracted instead of downloading unnecessary bits. Unfortunately, certain formats do not support such HTTP-based range requests (e.g. HDF4), and require the asset is downloaded to a local POSIX filesystem first.

Usage

edl_download(
  href,
  dest = basename(href),
  auth = "netrc",
  method = "httr",
  username = default("user"),
  password = default("password"),
  netrc_path = edl_netrc_path(),
  cookie_path = edl_cookie_path(),
  quiet = TRUE,
  ...
)

Arguments

href

the https URL of the asset

dest

local destination

auth

the authentication method ("token" for Bearer tokens or "netrc" for netrc.)

method

The download method, either "httr" or "curl".

username

EarthData Login User

password

EarthData Login Password

netrc_path

Path to the .netrc file to be created. Defaults to the appropriate R package configuration location given by tools::R_user_dir().

cookie_path

Path to the file where cookies will be stored. Defaults to the appropriate R package configuration location given by tools::R_user_dir().

quiet

logical default TRUE. Show progress in download?

...

additional arguments to download.file(), e.g. quiet = TRUE.

Value

the dest path, invisibly

Examples

if (FALSE) { # interactive()
href <- lpdacc_example_url()
edl_download(href)
}