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(R) Change tutorial decorators to new wrappers #601

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22 changes: 11 additions & 11 deletions R/inst/tutorials/04-helloaws/helloaws.R
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Original file line number Diff line number Diff line change
Expand Up @@ -3,7 +3,7 @@

library(metaflow)

# This is the 'start' step. All flows must have a step named
# This is the 'start' step. All flows must have a step named
# 'start' that is the first step in the flow.
start <- function(self){
message("HelloAWS is starting.")
Expand All @@ -13,25 +13,25 @@ start <- function(self){
# A step for metaflow to introduce itself.
hello <- function(self){
self$message <- "We're on the cloud! Metaflow says: Hi!"
print(self$message)
print(self$message)
message("Using metadata provider: ", get_metadata())
}

# This is the 'end' step. All flows must have an 'end' step,
# This is the 'end' step. All flows must have an 'end' step,
# which is the last step in the flow.
end <- function(self){
message("HelloAWS is all done.")
}

metaflow("HelloAWSFlow") %>%
step(step = "start",
r_function = start,
step(step = "start",
r_function = start,
next_step = "hello") %>%
step(step = "hello",
decorator("retry", times=2),
decorator("batch", cpu=2, memory=2048),
r_function = hello,
step(step = "hello",
retry(times=2),
batch(cpu=2, memory=2048),
r_function = hello,
next_step = "end") %>%
step(step = "end",
r_function = end) %>%
step(step = "end",
r_function = end) %>%
run()