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add a warmup parameter to loadtest #16

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add a warmup parameter to loadtest #16

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cb4125e
add a warmup parameter
May 6, 2020
c50998e
up is down down is up
May 6, 2020
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19 changes: 17 additions & 2 deletions R/loadtest.R
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Original file line number Diff line number Diff line change
Expand Up @@ -136,6 +136,7 @@ parse_url <- function(url){
#' @param loops The number of times each thread should hit the endpoint.
#' @param ramp_time The time (in seconds) that it should take before all threads are firing.
#' @param delay_per_request A delay (in milliseconds) after a thread completes before it should make its next request.
#' @param warmup The number of times each thread should hit the endpoint before capturing the output.

#' Raw assumes the body is a character and preserves it.
#' Json converts a list into json like the pacakge httr.
Expand Down Expand Up @@ -185,7 +186,8 @@ loadtest <- function(url,
threads = 1,
loops = 16,
ramp_time = 0,
delay_per_request = 0){
delay_per_request = 0,
warmup = 2){
invisible(check_java_installed())
invisible(check_jmeter_installed())

Expand Down Expand Up @@ -254,6 +256,9 @@ loadtest <- function(url,
# where to save the results
save_location <- tempfile(fileext = ".csv")

# include warmup
loops <- loops + max(0, warmup)

# the full test specification
jmx_spec <- glue::glue(template)

Expand Down Expand Up @@ -288,9 +293,19 @@ loadtest <- function(url,
names(output) <- c("start_time", "elapsed", "response_code","response_message", "thread",
"request_status", "received_bytes", "sent_bytes", "threads", "latency", "idle", "connect")

#remove warmups
output[["thread"]] <- as.integer(gsub("^Thread Group 1-", "", output[["thread"]]))
if (warmup > 0) {
warmups <- do.call(c,
lapply(
unique(output[["thread"]]),
function(x) {
which(output[["thread"]] == x)[seq_len(warmup)]
}))
output <- output[-warmups,]
}
output[["start_time"]] <- as.POSIXct(output[["start_time"]]/1000, origin="1970-01-01")
output[["time_since_start"]] <- round(as.numeric(output[["start_time"]]-min(output[["start_time"]]))*1000)
output[["thread"]] <- as.integer(gsub("^Thread Group 1-", "", output[["thread"]]))
output[["request_id"]] <- 1:nrow(output)
output[["request_status"]] <- factor(ifelse(output[["request_status"]],"Success","Failure"),c("Failure","Success"))
output <- output[,c("request_id", "start_time", "thread", "threads", "response_code", "response_message",
Expand Down