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HTTR2 POST requests in get_data functions #37

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Apr 10, 2024
Merged

HTTR2 POST requests in get_data functions #37

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38 changes: 20 additions & 18 deletions R/lc_get_data.R
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Original file line number Diff line number Diff line change
Expand Up @@ -59,30 +59,32 @@ lc_get_data <- function(metric = NULL,
showPctFull = NULL,
countOnly = NULL) {
# Base API URL.
req <- httr2::request("https://java.epa.gov/StreamCAT/LakeCat/metrics?")
query_url <- "https://java.epa.gov/StreamCAT/LakeCat/metrics?"
# Collapse comids into a single string separated by a comma.
if (!is.null(comid))
comid <- paste(comid, collapse = ",")
# Create the query based on user inputs.
# req_url_query silently ignores NULLs.
query <- httr2::req_url_query(
.req = req,
name = metric,
comid = comid,
areaOfInterest = aoi,
showAreaSqKm = showAreaSqKm,
showPctFull = showPctFull,
countOnly = countOnly
)
# Send HTTP request
resp <- httr2::req_perform(req = query)
# Extract the body of the response.
resp_body <- httr2::resp_body_string(resp, encoding = "UTF-8")
# Transform the string response into a data frame.
final_df <- utils::read.csv(text = resp_body,
fileEncoding = "UTF8")
post_body=""
if (!is.null(metric)) post_body <- paste0(post_body,"&name=",metric)
if (!is.null(comid)) post_body <- paste0(post_body,"&comid=",comid)
if (!is.null(aoi)) post_body <- paste0(post_body,"&areaOfInterest=",aoi)
if (!is.null(showAreaSqKm)) post_body <- paste0(post_body,"&showAreaSqKm=",showAreaSqKm)
if (!is.null(showPctFull)) post_body <- paste0(post_body,"&showPctFull=",showPctFull)
if (!is.null(countOnly)) post_body <- paste0(post_body,"&countOnly=",countOnly)
post_body = substring(post_body, 2)

df <- httr2::request(query_url) |>
# insert body to ensure return of hundreds of COMIDs
httr2::req_body_raw(post_body) |>
# perform the request
httr2::req_perform() |>
# extract response body as string
httr2::resp_body_string(encoding = 'UTF-8') |>
# Transform the string response into a data frame.
readr::read_csv()
# End of function. Return a data frame.
return(final_df)
return(df)
}

#' @title Get NLCD Data
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44 changes: 23 additions & 21 deletions R/sc_get_data.R
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Original file line number Diff line number Diff line change
Expand Up @@ -80,34 +80,36 @@ sc_get_data <- function(metric = NULL,
conus = NULL,
countOnly = NULL) {
# Base API URL.
req <- httr2::request("https://java.epa.gov/StreamCAT/metrics?")
query_url <- "https://java.epa.gov/StreamCAT/metrics?"
# Collapse comids into a single string separated by a comma.
if (!is.null(comid))
comid <- paste(comid, collapse = ",")
# Create the query based on user inputs.
# req_url_query silently ignores NULLs.
query <- httr2::req_url_query(
.req = req,
name = metric,
comid = comid,
areaOfInterest = aoi,
state = state,
county = county,
region = region,
showAreaSqKm = showAreaSqKm,
showPctFull = showPctFull,
conus = conus,
countOnly = countOnly
)
post_body=""
if (!is.null(metric)) post_body <- paste0(post_body,"&name=",metric)
if (!is.null(comid)) post_body <- paste0(post_body,"&comid=",comid)
if (!is.null(aoi)) post_body <- paste0(post_body,"&areaOfInterest=",aoi)
if (!is.null(state)) post_body <- paste0(post_body,"&state=",state)
if (!is.null(county)) post_body <- paste0(post_body,"&county=",county)
if (!is.null(region)) post_body <- paste0(post_body,"&region=",region)
if (!is.null(showAreaSqKm)) post_body <- paste0(post_body,"&showAreaSqKm=",showAreaSqKm)
if (!is.null(showPctFull)) post_body <- paste0(post_body,"&showPctFull=",showPctFull)
if (!is.null(conus)) post_body <- paste0(post_body,"&conus=",conus)
if (!is.null(countOnly)) post_body <- paste0(post_body,"&countOnly=",countOnly)
post_body = substring(post_body, 2)
# Send HTTP request
resp <- httr2::req_perform(req = query)
# Extract the body of the response.
resp_body <- httr2::resp_body_string(resp, encoding = "UTF-8")
# Transform the string response into a data frame.
final_df <- utils::read.csv(text = resp_body,
fileEncoding = "UTF8")
df <- httr2::request(query_url) |>
# insert body to ensure return of hundreds of COMIDs
httr2::req_body_raw(post_body) |>
# perform the request
httr2::req_perform() |>
# extract response body as string
httr2::resp_body_string(encoding = 'UTF-8') |>
# Transform the string response into a data frame.
readr::read_csv()
# End of function. Return a data frame.
return(final_df)
return(df)
}

#' @title Get NLCD Data
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