Plumber Endpoint

Source: R/plumber-step.R

Plumber Endpoint

Plumber Endpoint

Details

Defines a terminal handler in a Plumber router.

Parameters values are obtained from parsing blocks of lines in a plumber file. They can also be provided manually for historical reasons.

Super classes

plumber::Hookable -> plumber::PlumberStep -> PlumberEndpoint

Public fields

verbs

a character vector. http methods. For historical reasons we have to accept multiple verbs for a single path. Now it's simpler to just parse each separate verb/path into its own endpoint, so we just do that.

path

a character string. endpoint path

comments

endpoint comments

description

endpoint description

responses

endpoint responses

params

endpoint parameters

tags

endpoint tags

parsers

step allowed parsers

Methods

Public methods

Inherited methods

Method getTypedParams()

retrieve endpoint typed parameters

Usage

PlumberEndpoint$getTypedParams()

Method canServe()

ability to serve request

Usage

PlumberEndpoint$canServe(req)

Arguments

req

a request object

Returns

a logical. TRUE when endpoint can serve request.

Method matchesPath()

determines if route matches requested path

Usage

PlumberEndpoint$matchesPath(path)

Arguments

path

a url path

Returns

a logical. TRUE when endpoint matches the requested path.

Method new()

Create a new PlumberEndpoint object

Usage

PlumberEndpoint$new(
  verbs,
  path,
  expr,
  envir,
  serializer,
  parsers,
  lines,
  params,
  comments,
  description,
  responses,
  tags,
  srcref
)

Arguments

verbs

Endpoint verb Ex: "GET", "POST"

path

Endpoint path. Ex: "/index.html", "/foo/bar/baz"

expr

Endpoint function or expression that evaluates to a function.

envir

Endpoint environment

serializer

Endpoint serializer. Ex: serializer_json()

parsers

Can be one of:

  • A NULL value

  • A character vector of parser names

  • A named list() whose keys are parser names names and values are arguments to be applied with do.call()

  • A TRUE value, which will default to combining all parsers. This is great for seeing what is possible, but not great for security purposes

If the parser name "all" is found in any character value or list name, all remaining parsers will be added. When using a list, parser information already defined will maintain their existing argument values. All remaining parsers will use their default arguments.

Example:

# provide a character string
parsers = "json"

# provide a named list with no arguments
parsers = list(json = list())

# provide a named list with arguments; include `rds`
parsers = list(json = list(simplifyVector = FALSE), rds = list())

# default plumber parsers
parsers = c("json", "form", "text", "octet", "multi")

lines

Endpoint block

params

Endpoint params

comments, description, responses, tags

Values to be used within the OpenAPI Spec

srcref

srcref attribute from block

Returns

A new PlumberEndpoint object

Method getPathParams()

retrieve endpoint path parameters

Usage

PlumberEndpoint$getPathParams(path)

Arguments

path

endpoint path

Method getFunc()

retrieve endpoint function

Usage

PlumberEndpoint$getFunc()

Method getFuncParams()

retrieve endpoint expression parameters

Usage

PlumberEndpoint$getFuncParams()

Method getEndpointParams()

retrieve endpoint defined parameters

Usage

PlumberEndpoint$getEndpointParams()

Method setPath()

Updates $path with a sanitized path and updates the internal path meta-data

Usage

PlumberEndpoint$setPath(path)

Arguments

path

Path to set $path. If missing a beginning slash, one will be added.

Method clone()

The objects of this class are cloneable with this method.

Usage

PlumberEndpoint$clone(deep = FALSE)

Arguments

deep

Whether to make a deep clone.