README.Rmd

---
output: github_document
---

<!-- README.md is generated from README.Rmd. Please edit that file -->

```{r, include = FALSE}
knitr::opts_chunk$set(
  collapse = TRUE,
  comment = "#>",
  fig.path = "man/figures/README-",
  out.width = "100%"
)
```

# r2lambda

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The goal of `{r2lambda}` is to make it easier to go from an `R` script to a deployed 
`AWS Lambda` function.

## Requirements

- [docker](https://docs.docker.com/get-docker/) is required to build, tag, and push the image.

## Installation

You can install the development version of `{r2lambda}` like so:

``` r
# install_packages("remotes")
remotes::install_github("discindo/r2lambda")
```

## Setup

`r2lambda` assumes environmental variables for connecting to AWS services are available
in the `R` session. This is typically done via an `.Renviron` file that should include:

```
ACCESS_KEY_ID = "YOUR AWS ACCESS KEY ID"
SECRET_ACCESS_KEY = "YOUR AWS SECRET ACCESS KEY"
PROFILE = "YOUR AWS PROFILE"
REGION = "YOUR AWS REGION"
```

## Workflow

### Build a docker image for the lambda function

```{r, eval = FALSE}
runtime_function <- "parity"
runtime_path <- system.file("parity.R", package = "r2lambda")
dependencies <- NULL

# Might take a while, its building a docker image
build_lambda(
 tag = "parity1",
 runtime_function = runtime_function,
 runtime_path = runtime_path,
 dependencies = dependencies
 )
```

### Test the lambda docker image locally

```{r, eval = FALSE}
payload <- list(number = 2)
tag <- "parity1"
test_lambda(tag = "parity1", payload)
```

### Deploy to AWS Lambda

```{r, eval = FALSE}
# Might take a while, its pushing it to a remote repository
deploy_lambda(tag = "parity1")
```

### Invoke deployed lambda

```{r, eval = FALSE}
invoke_lambda(
  function_name = "parity1",
  invocation_type = "RequestResponse",
  payload = list(number = 2),
  include_logs = FALSE
)

#> Lambda response payload: 
#> {"parity":"even"}
```

## Code of Conduct

Please note that the r2lambda project is released with a 
[Contributor Code of Conduct](https://contributor-covenant.org/version/2/1/CODE_OF_CONDUCT.html). By 
contributing to this project, you agree to abide by its terms.