restify-plugins
A collection of core restify plugins
Getting Started
Install the module with: npm install restify-plugins
Usage
This is the core set of plugins that restify ships with. These include lots of
header parsing handlers, data parsing handlers, as well as other useful logging/metrics handlers.
This module includes the follow pre
plugins, which are intended to be used
prior to the routing of a request:
sanitizePath()
- cleans up duplicate or trailing / on the URLcontext()
- Provide req.set(key, val) and req.get(key) methods for setting and retrieving context to a specific request.userAgent(options)
- used to support edge cases for HEAD requests when using curl
options.userAgentRegExp
{RegExp} regexp to capture curl user-agents
strictQueryParams()
- checks req.urls query params with strict key/val format and rejects non-strict requests with status code 400.
options.message
{String} response body message string
This module includes the following header parser plugins:
acceptParser(accepts)
- Accept header
accepts
{Array} an array of acceptable types
authorizationParser(options)
- Authorization header
options
{Object} options object passed to http-signature module
conditionalRequest()
- Conditional headers (If-*)fullResponse()
- handles disappeared CORS headers
This module includes the following data parsing plugins:
bodyParser(options)
- parses POST bodies to req.body
. automatically uses one of the following parsers based on content type:
urlEncodedBodyParser(options)
- parses url encoded form bodiesjsonBodyParser(options)
- parses JSON POST bodiesmultipartBodyParser(options)
- parses multipart form bodies- All bodyParsers support the following options:
options.mapParams
- default false. copies parsed post body values onto req.paramsoptions.overrideParams
- default false. only applies when if mapParams true. when true, will stomp on req.params value when existing value is found.
jsonp()
- parses JSONP callbackqueryParser()
- Parses URL query paramters into req.query
. Many options
correspond directly to option defined for the underlying
qs.parse
.
options.mapParams
- Default false. Copies parsed query parameters into
req.params
.options.overrideParams
- Default false. Only applies when if mapParams
true. When true, will stomp on req.params field when existing value is
found.options.allowDots
- Default false. Transform ?foo.bar=baz
to a nested
object: {foo: {bar: 'baz'}}
.options.arrayLimit
- Default 20. Only transform ?a[$index]=b
to an array
if $index
is less than arrayLimit
.options.depth
- Default 5. The depth limit for parsing nested objects,
e.g. ?a[b][c][d][e][f][g][h][i]=j
.options.parameterLimit
- Default 1000. Maximum number of query params
parsed. Additional params are silently dropped.options.parseArrays
- Default true. Whether to parse ?a[]=b&a[1]=c
to an
array, e.g. {a: ['b', 'c']}
.options.plainObjects
- Default false. Whether req.query
is a "plain"
object -- does not inherit from Object
. This can be used to allow query
params whose names collide with Object methods, e.g. ?hasOwnProperty=blah
.options.strictNullHandling
- Default false. If true, ?a&b=
results in
{a: null, b: ''}
. Otherwise, {a: '', b: ''}
.
requestLogger(options)
- adds timers for each handler in your request chain
options.properties
{Object} properties to pass to bunyan's log.child()
method
The module includes the following request plugins:
reqIdHeaders(options)
- a plugin that lets you use incoming request header
values to set the request id (5.x compatible only)
options.headers
{Array} an array of header names to use. lookup
precedence is left to right (lowest index first)
The module includes the following response plugins:
dateParser(delta)
- expires requests based on current time + delta
delta
{Number} age in seconds
gzip(options)
- gzips the response if client accepts it
options
{Object} options to pass to zlib
serveStatic()
- used to serve static filesthrottle(options)
- throttles responses
options.burst
{Number}options.rate
{Number}options.ip
{Boolean}options.username
{Boolean}options.xff
{Boolean}options.overrides
{Object}
requestExpiry(options)
- A request expiry will use headers to tell if the incoming request has expired or not. There are two options for this plugin:
- Absolute Time
- Time in Milliseconds since the Epoch when this request should be
considered expired
- Timeout
-
The request start time is supplied
-
A timeout, in milliseconds, is given
-
The timeout is added to the request start time to arrive at the
absolute time in which the request is considered expires
options.absoluteHeader
{String} header name of the absolute time for request expirationoptions.startHeader
{String} header name for the start time of the requestoptions.timeoutHeader
{String} The header name for the time in milliseconds that should ellapse before the request is considered expired.
The module includes the following plugins to be used with restify's after
event, e.g., server.on('after', plugins.auditLogger());
:
auditLogger(options)
- an audit logger for recording all handled requests
options.log
{Object} bunyan logger[options.server]
{Object} restify server. if passed in, causes server to
emit 'auditlog' event after audit logs are flushed[options.logBuffer]
{Object} optional ringbuffer which is written to if
passed in[options.printLog]
{Boolean} when true, prints audit logs. default true.
metrics(callback)
- a metrics plugin which will invoke callback with the
the following parameters (5.x compatible only):
err
{Object} an error if the request had an errormetrics
{Object} - metrics about the requestmetrics.statusCode
{Number} status code of the response. can be undefined
in the case of an uncaughtExceptionmetrics.method
{String} http request verbmetrics.latency
{Number} request latencymetrics.path
{String} req.path() valuemetrics.inflightRequests
{Number} Number of inflight requests pending in restify.metrics.unifinishedRequests
{Number} Same as inflightRequests
metrics.connectionState
{String} can be either 'close', 'aborted', or
undefined. If this value is set, err will be a corresponding
RequestCloseError
or RequestAbortedError
. If connectionState is either
'close' or 'aborted', then the statusCode is not applicable since the
connection was severed before a response was written.req
{Object} the request objres
{Object} the response objroute
{Object} the route obj that serviced the request
Contributing
Add unit tests for any new or changed functionality. Ensure that lint and style
checks pass.
To start contributing, install the git pre-push hooks:
make githooks
Before committing, run the prepush hook:
make prepush
If you have style errors, you can auto fix whitespace issues by running:
make codestyle-fix
License
Copyright (c) 2015 Alex Liu
Licensed under the MIT license.