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https://github.com/posit-dev/connectcreds

Bringing Posit Connect's viewer-based credentials to R
https://github.com/posit-dev/connectcreds

Last synced: 9 months ago
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Bringing Posit Connect's viewer-based credentials to R

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README

          

---
output: github_document
---

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

# connectcreds

[![lifecycle](https://img.shields.io/badge/lifecycle-experimental-orange.svg)](https://lifecycle.r-lib.org/articles/stages.html)
[![R-CMD-check](https://github.com/posit-dev/connectcreds/actions/workflows/R-CMD-check.yaml/badge.svg)](https://github.com/posit-dev/connectcreds/actions/workflows/R-CMD-check.yaml)

`connectcreds` provides low-level utilities for Shiny developers and R package
authors building tools that make use of Posit Connect's [viewer-based
credentials](https://docs.posit.co/connect/admin/integrations/oauth-integrations/).

## Installation

You can install connectcreds from CRAN with:

``` r
install.packages("connectcreds")
```

Or, install the development version of connectcreds from
[GitHub](https://github.com/) with:

``` r
# install.packages("pak")
pak::pak("posit-dev/connectcreds")
```

## Usage

`connectcreds` includes helper functions for implementing Posit Connect's
viewer-based credentials in Shiny applications. These helpers are meant to be
called in the context of a Shiny server function, as follows:

```{r shiny-server-fn}
server <- function(input, output, session) {
token <- "PAT for local development"
if (connectcreds::has_viewer_token()) {
token <- connectcreds::connect_viewer_token()
}

# ...
}
```

Usually, though, these helpers will be used internally by packages that
authenticate with various services. For example, here is a simplified version of
`gh::gh_token()` that returns a GitHub OAuth token for the viewer on Connect but
uses a GitHub personal access token when testing locally:

```{r gh-token}
gh_token <- function() {
rlang::check_installed("connectcreds", "for viewer-based authentication")
if (connectcreds::has_viewer_token("https://github.com")) {
token <- connectcreds::connect_viewer_token("https://github.com")
return(token$access_token)
}
Sys.getenv("GITHUB_PAT")
}

server <- function(input, output, session) {
# A Shiny output that shows the user's GitHub username:
output$gh_handle <- renderText({
resp <- gh::gh_whoami(.token = gh_token())
resp$login
})

# ...
}
```

## License

MIT (c) [Posit Software, PBC](https://posit.co)