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Merge pull request #30 from metosin/FirstClassMiddleware

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First class middleware
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Tommi Reiman 2017-09-08 11:39:39 +03:00 committed by GitHub
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12 changed files with 275 additions and 237 deletions
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114
README.md
View file

@ -2,12 +2,12 @@
A friendly data-driven router for Clojure(Script).
* Simple data-driven route syntax
* First-class route meta-data
* Simple data-driven [route syntax](#route-syntax)
* First-class [route meta-data](#route-meta-data)
* Generic, not tied to HTTP
* [Route conflict resolution](#route-conflicts)
* [Pluggable coercion](#parameter-coercion) ([clojure.spec](https://clojure.org/about/spec))
* both Middleware & Interceptors
* both [Middleware](#middleware) & Interceptors
* Extendable
* Fast
@ -87,7 +87,7 @@ Creating a router:
`:mixed-router` is created (both static & wild routes are found):
```clj
(reitit/router-type router)
(reitit/router-name router)
; :mixed-router
```
@ -147,7 +147,7 @@ Only a partial match. Let's provide the path-parameters:
There is also a exception throwing version:
```
```clj
(reitit/match-by-name! router ::user)
; ExceptionInfo missing path-params for route /api/user/:id: #{:id}
```
@ -159,12 +159,14 @@ Routes can have arbitrary meta-data. For nested routes, the meta-data is accumul
A router based on nested route tree:
```clj
(def router
(reitit/router
["/api" {:interceptors [::api]}
["/ping" ::ping]
["/admin" {:roles #{:admin}}
["/users" ::users]
["/db" {:interceptors [::db], :roles ^:replace #{:db-admin}}
["/db" {:interceptors [::db]
:roles ^:replace #{:db-admin}}
["/:db" {:parameters {:db String}}
["/drop" ::drop-db]
["/stats" ::db-stats]]]]]))
@ -233,7 +235,7 @@ Route trees should not have multiple routes that match to a single (request) pat
## Ring
[Ring](https://github.com/ring-clojure/ring)-router adds support for ring [handlers](https://github.com/ring-clojure/ring/wiki/Concepts#handlers), [middleware](https://github.com/ring-clojure/ring/wiki/Concepts#middleware) and routing based on `:request-method`. Ring-router is created with `reitit.ring/router` function. It validates that all paths have a `:handler` defined and expands `:middleware` to create accumulated handlers for all request-methods. `reitit.ring/ring-handler` creates an actual ring handler out of a ring-router.
[Ring](https://github.com/ring-clojure/ring)-router adds support for ring concepts like [handlers](https://github.com/ring-clojure/ring/wiki/Concepts#handlers), [middleware](https://github.com/ring-clojure/ring/wiki/Concepts#middleware) and routing based on `:request-method`. Ring-router is created with `reitit.ring/router` function. It runs a custom route compiler, creating a optimized stucture for handling route matches, with compiled middleware chain & handlers for all request methods. It also ensures that all routes have a `:handler` defined.
Simple Ring app:
@ -249,13 +251,6 @@ Simple Ring app:
["/ping" handler])))
```
The expanded routes:
```clj
(-> app (ring/get-router) (reitit/routes))
; [["/ping" {:handler #object[...]}]]
```
Applying the handler:
```clj
@ -266,8 +261,23 @@ Applying the handler:
; {:status 200, :body "ok"}
```
The expanded routes:
```clj
(-> app (ring/get-router) (reitit/routes))
; [["/ping"
; {:handler #object[...]}
; #Methods{:any #Endpoint{:meta {:handler #object[...]},
; :handler #object[...],
; :middleware []}}]]
```
Note that the compiled resuts as third element in the route vector.
### Request-method based routing
Handler are also looked under request-method keys: `:get`, `:head`, `:patch`, `:delete`, `:options`, `:post` or `:put`. Top-level handler is used if request-method based handler is not found.
```clj
(def app
(ring/ring-handler
@ -295,21 +305,18 @@ Reverse routing:
### Middleware
`:middleware` should be a vector of either of the following (expanded via the `reitit.middleware/ExpandMiddleware`:
Middleware can be added with a `:middleware` key, with a vector value of the following:
1. a ring middleware function of `handler -> request -> response`
2. a vector of middleware function (`handler args -> request -> response`) and it's args - actial middleware is created by applying function with handler and args
1. ring middleware function `handler -> request -> response`
2. vector of middleware function `handler ?args -> request -> response` and optinally it's args.
Let's define some middleware and a handler:
A middleware and a handler:
```clj
(defn wrap [handler id]
(fn [request]
(handler (update request ::acc (fnil conj []) id))))
(defn wrap-api [handler]
(wrap handler :api))
(defn handler [{:keys [::acc]}]
{:status 200, :body (conj acc :handler)})
```
@ -320,7 +327,7 @@ App with nested middleware:
(def app
(ring/ring-handler
(ring/router
["/api" {:middleware [wrap-api]}
["/api" {:middleware [#(wrap % :api)]}
["/ping" handler]
["/admin" {:middleware [[wrap :admin]]}
["/db" {:middleware [[wrap :db]]
@ -342,57 +349,48 @@ Middleware is applied correctly:
### Middleware Records
Besides just being opaque functions, middleware can be presented as first-class data entries, `reitit.middleware/Middleware` records. They are created with `reitit.middleware/create` function and must have a `:name` and either `:wrap` or `:gen` key with the actual middleware function or a [middleware generator function](#compiling-middleware).
Reitit supports first-class data-driven middleware via `reitit.middleware/Middleware` records, created with `reitit.middleware/create` function. The following keys have special purpose:
When routes are compiled, middleware records are unwrapped into normal middleware functions producing no runtime performance penalty. Thanks to the `ExpandMiddleware` protocol, plain clojure(script) maps can also be used - they get expanded into middleware records.
| key | description |
| -----------|-------------|
| `:name` | Name of the middleware as qualified keyword (optional,recommended for libs)
| `:wrap` | The actual middleware function of `handler args? => request => response`
| `:gen` | Middleware compile function, see [compiling middleware](#compiling-middleware).
The previous middleware re-written as records:
When routes are compiled, all middleware are expanded (and optionally compiled) into `Middleware` and stored in compilation results for later use (api-docs etc). For actual request processing, they are unwrapped into normal middleware functions producing zero runtime performance penalty. Middleware expansion is backed by `reitit.middleware/IntoMiddleware` protocol, enabling plain clojure(script) maps to be used.
A Record:
```clj
(require '[reitit.middleware :as middleware])
(def wrap2
(middleware/create
{:name ::wrap
{:name ::wrap2
:description "a nice little mw, takes 1 arg."
:wrap wrap}))
(def wrap2-api
{:name ::wrap-api
:description "a nice little mw, :api as arg"
:wrap (fn [handler]
(wrap handler :api))})
```
Or as maps:
As plain map:
```clj
(require '[reitit.middleware :as middleware])
;; plain map
(def wrap3
{:name ::wrap
:description "a nice little mw, takes 1 arg."
:wrap wrap})
(def wrap3-api
{:name ::wrap-api
{:name ::wrap3
:description "a nice little mw, :api as arg"
:wrap (fn [handler]
(wrap handler :api))})
```
### Async Ring
All built-in middleware provide both the 2 and 3-arity, so they work with [Async Ring](https://www.booleanknot.com/blog/2016/07/15/asynchronous-ring.html) too.
All built-in middleware provide both 2 and 3-arity and are compiled for both Clojure & ClojureScript, so they work with [Async Ring](https://www.booleanknot.com/blog/2016/07/15/asynchronous-ring.html) and [Node.js](https://nodejs.org) too.
### Meta-data based extensions
The routing `Match` is injected into a request and can be extracted with `reitit.ring/get-match`. It can be used to build dynamic extensions to the system.
`ring-handler` injects the `Match` into a request and it can be extracted at runtime with `reitit.ring/get-match`. This can be used to build dynamic extensions to the system.
A middleware to guard routes:
Example middleware to guard routes based on user roles:
```clj
(require '[clojure.set :as set])
@ -443,12 +441,12 @@ Authorized access to guarded route:
## Parameter coercion
Reitit ships with pluggable parameter coercion via `reitit.coercion.protocol/Coercion` protocol. `reitit.coercion.spec/SpecCoercion` provides implements it for [clojure.spec](https://clojure.org/about/spec) & [data-specs](https://github.com/metosin/spec-tools#data-specs).
Reitit provides pluggable parameter coercion via `reitit.coercion.protocol/Coercion` protocol, originally introduced in [compojure-api](https://clojars.org/metosin/compojure-api). Reitit ships with `reitit.coercion.spec/SpecCoercion` providing implemenation for [clojure.spec](https://clojure.org/about/spec) and [data-specs](https://github.com/metosin/spec-tools#data-specs).
**NOTE**: to use the spec-coercion, one needs to add the following dependencies manually to the project:
**NOTE**: Before Clojure 1.9.0 is shipped, to use the spec-coercion, one needs to add the following dependencies manually to the project:
```clj
[org.clojure/clojure "1.9.0-alpha19"]
[org.clojure/clojure "1.9.0-alpha20"]
[org.clojure/spec.alpha "0.1.123"]
[metosin/spec-tools "0.3.3"]
```
@ -536,13 +534,13 @@ If either request or response coercion fails, an descriptive error is thrown.
## Compiling Middleware
The [meta-data extensions](#meta-data-based-extensions) are a easy way to extend the system. Routes meta-data can be trasnformed into any shape (records, functions etc.) in route compilation, enabling easy access at request-time.
The [meta-data extensions](#meta-data-based-extensions) are a easy way to extend the system. Routes meta-data can be transformed into any shape (records, functions etc.) in route compilation, enabling fast access at request-time.
Still, we can do better. As we know the exact route interceptor/middleware is linked to, we can pass the (compiled) route information into the interceptor/middleware at creation-time. It can extract and transform relevant data just for it and pass it into the actual request-handler via a closure. We can do all the static local computations forehand, yielding faster runtime processing.
Still, we can do better. As we know the exact route that interceptor/middleware is linked to, we can pass the (compiled) route information into the interceptor/middleware at creation-time. It can extract and transform relevant data just for it and pass it into the actual request-handler via a closure - yielding faster runtime processing.
To do this we use [middleware records](#middleware-records) `:gen` hook instead of the normal `:wrap`. `:gen` expects a function of `route-meta router-opts => wrap`. Instead of returning the actual middleware function, the middleware record can also decide no to mount itsef byt returning `nil`. Why mount `wrap-enforce-roles` for a route if there are no roles required for it?
To do this we use [middleware records](#middleware-records) `:gen` hook instead of the normal `:wrap`. `:gen` expects a function of `route-meta router-opts => wrap`. Middleware can also return `nil`, which effective unmounts the middleware. Why mount a `wrap-enforce-roles` middleware for a route if there are no roles required for it?
To demonstrate the two approaches, below are response coercion middleware written as normal ring middleware function and as middleware record with `:gen`. The actual codes are from `reitit.coercion`:
To demonstrate the two approaches, below are response coercion middleware written as normal ring middleware function and as middleware record with `:gen`. These are the actual codes are from [`reitit.coercion`](https://github.com/metosin/reitit/blob/master/src/reitit/coercion.cljc):
### Naive
@ -552,7 +550,7 @@ To demonstrate the two approaches, below are response coercion middleware writte
(defn wrap-coerce-response
"Pluggable response coercion middleware.
Expects a :coercion of type `reitit.coercion.protocol/Coercion`
and :responeses from route meta, otherwise does not mount."
and :responses from route meta, otherwise does not mount."
[handler]
(fn
([request]
@ -605,7 +603,7 @@ To demonstrate the two approaches, below are response coercion middleware writte
(handler request #(respond (coerce-response coercers request %)) raise)))))))}))
```
The `:gen` -version is both much easier to understand but also 2-4x faster on basic perf tests.
The `:gen` -version has 50% less code, is easier to reason about and is 2-4x faster on basic perf tests.
## Merging route-trees
@ -644,6 +642,10 @@ To all Clojure(Script) routing libs out there, expecially to
[Ataraxy](https://github.com/weavejester/ataraxy), [Bide](https://github.com/funcool/bide), [Bidi](https://github.com/juxt/bidi), [Compojure](https://github.com/weavejester/compojure) and
[Pedestal](https://github.com/pedestal/pedestal/tree/master/route).
Also to [Compojure-api](https://github.com/metosin/compojure-api), [Kekkonen](https://github.com/metosin/kekkonen) and [Ring-swagger](https://github.com/metosin/ring-swagger) and for the data-driven syntax, coercion & stuff.
And some [Yada](https://github.com/juxt/yada) too.
## License
Copyright © 2017 [Metosin Oy](http://www.metosin.fi)

2
perf-test/clj/reitit/coercion_perf_test.clj
View file

@ -33,7 +33,7 @@
(s/def ::y (s/and (s/conformer #(if (string? %) (Long/parseLong %) %) identity) int?))
(s/def ::k (s/keys :req-un [::x ::y]))
(let [spec (spec/specify {:x int?, :y int?} ::jeah)
(let [spec (spec/into-spec {:x int?, :y int?} ::jeah)
coercers (#'coercion/request-coercers spec/coercion {:body spec})
params {:x "1", :y "2"}
request {:body-params {:x "1", :y "2"}}]

8
src/reitit/coercion.cljc
View file

@ -115,7 +115,7 @@
match (ring/get-match request)
parameters (-> match :result method :meta :parameters)
coercion (-> match :meta :coercion)]
(if coercion
(if (and coercion parameters)
(let [coercers (request-coercers coercion parameters)
coerced (coerce-parameters coercers request)]
(handler (impl/fast-assoc request :parameters coerced)))
@ -125,7 +125,7 @@
match (ring/get-match request)
parameters (-> match :result method :meta :parameters)
coercion (-> match :meta :coercion)]
(if coercion
(if (and coercion parameters)
(let [coercers (request-coercers coercion parameters)
coerced (coerce-parameters coercers request)]
(handler (impl/fast-assoc request :parameters coerced) respond raise)))))))
@ -161,7 +161,7 @@
responses (-> match :result method :meta :responses)
coercion (-> match :meta :coercion)
opts (-> match :meta :opts)]
(if coercion
(if (and coercion responses)
(let [coercers (response-coercers coercion responses opts)
coerced (coerce-response coercers request response)]
(coerce-response coercers request (handler request)))
@ -173,7 +173,7 @@
responses (-> match :result method :meta :responses)
coercion (-> match :meta :coercion)
opts (-> match :meta :opts)]
(if coercion
(if (and coercion responses)
(let [coercers (response-coercers coercion responses opts)
coerced (coerce-response coercers request response)]
(handler request #(respond (coerce-response coercers request %))))

33
src/reitit/coercion/spec.cljc
View file

@ -23,31 +23,32 @@
(def default-conforming
::default)
(defprotocol Specify
(specify [this name]))
(defprotocol IntoSpec
(into-spec [this name]))
(extend-protocol Specify
(extend-protocol IntoSpec
#?(:clj clojure.lang.PersistentArrayMap
:cljs cljs.core.PersistentArrayMap)
(specify [this name]
(into-spec [this name]
(ds/spec name this))
#?(:clj clojure.lang.PersistentHashMap
:cljs cljs.core.PersistentHashMap)
(specify [this name]
(into-spec [this name]
(ds/spec name this))
Spec
(specify [this _] this)
(into-spec [this _] this)
Object
(specify [this _]
#?(:clj Object
:cljs default)
(into-spec [this _]
(st/create-spec {:spec this})))
;; TODO: proper name!
(def memoized-specify
(memoize #(specify %1 (gensym "spec"))))
(def memoized-into-spec
(memoize #(into-spec %1 (gensym "spec"))))
(defmulti coerce-response? identity :default ::default)
(defmethod coerce-response? ::default [_] true)
@ -58,7 +59,7 @@
(get-name [_] name)
(compile [_ model _]
(memoized-specify model))
(memoized-into-spec model))
(get-apidocs [_ _ {:keys [parameters responses] :as info}]
(cond-> (dissoc info :parameters :responses)
@ -67,13 +68,13 @@
(into
(empty parameters)
(for [[k v] parameters]
[k memoized-specify])))
[k memoized-into-spec])))
responses (assoc
::swagger/responses
(into
(empty responses)
(for [[k response] responses]
[k (update response :schema memoized-specify)])))))
[k (update response :schema memoized-into-spec)])))))
(make-open [_ spec] spec)
@ -81,7 +82,7 @@
(update error :spec (comp str s/form)))
(request-coercer [_ type spec]
(let [spec (memoized-specify spec)
(let [spec (memoized-into-spec spec)
{:keys [formats default]} (conforming type)]
(fn [value format]
(if-let [conforming (or (get formats format) default)]
@ -101,9 +102,7 @@
(def default-options
{:coerce-response? coerce-response?
:conforming {:body {:default default-conforming
:formats {"application/json" json-conforming
"application/msgpack" json-conforming
"application/x-yaml" json-conforming}}
:formats {"application/json" json-conforming}}
:string {:default string-conforming}
:response {:default default-conforming}}})

21
src/reitit/core.cljc
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@ -89,11 +89,14 @@
(defn find-names [routes opts]
(into [] (keep #(-> % second :name)) routes))
(defn compile-route [[p m :as route] {:keys [compile] :as opts}]
(defn- compile-route [[p m :as route] {:keys [compile] :as opts}]
[p m (if compile (compile route opts))])
(defn- compile-routes [routes opts]
(into [] (keep #(compile-route % opts) routes)))
(defprotocol Router
(router-type [this])
(router-name [this])
(routes [this])
(options [this])
(route-names [this])
@ -132,7 +135,7 @@
([routes]
(linear-router routes {}))
([routes opts]
(let [compiled (map #(compile-route % opts) routes)
(let [compiled (compile-routes routes opts)
names (find-names routes opts)
[data lookup] (reduce
(fn [[data lookup] [p {:keys [name] :as meta} result]]
@ -146,10 +149,10 @@
lookup (impl/fast-map lookup)]
(reify
Router
(router-type [_]
(router-name [_]
:linear-router)
(routes [_]
routes)
compiled)
(options [_]
opts)
(route-names [_]
@ -179,7 +182,7 @@
(str "can't create LookupRouter with wildcard routes: " wilds)
{:wilds wilds
:routes routes})))
(let [compiled (map #(compile-route % opts) routes)
(let [compiled (compile-routes routes opts)
names (find-names routes opts)
[data lookup] (reduce
(fn [[data lookup] [p {:keys [name] :as meta} result]]
@ -190,10 +193,10 @@
data (impl/fast-map data)
lookup (impl/fast-map lookup)]
(reify Router
(router-type [_]
(router-name [_]
:lookup-router)
(routes [_]
routes)
compiled)
(options [_]
opts)
(route-names [_]
@ -220,7 +223,7 @@
lookup-router (lookup-router lookup opts)
names (find-names routes opts)]
(reify Router
(router-type [_]
(router-name [_]
:mixed-router)
(routes [_]
routes)

86
src/reitit/middleware.cljc
View file

@ -2,56 +2,55 @@
(:require [meta-merge.core :refer [meta-merge]]
[reitit.core :as reitit]))
(defprotocol ExpandMiddleware
(expand-middleware [this meta opts]))
(defprotocol IntoMiddleware
(into-middleware [this meta opts]))
(defrecord Middleware [name wrap create])
(defrecord Middleware [name wrap])
(defrecord Endpoint [meta handler middleware])
(defn create [{:keys [name gen wrap] :as m}]
(when-not name
(throw
(ex-info
(str "Middleware must have :name defined " m) m)))
(when (and gen wrap)
(throw
(ex-info
(str "Middleware can't both :wrap and :gen defined " m) m)))
(map->Middleware m))
(extend-protocol ExpandMiddleware
(extend-protocol IntoMiddleware
#?(:clj clojure.lang.APersistentVector
:cljs cljs.core.PersistentVector)
(expand-middleware [[f & args] meta opts]
(if-let [mw (expand-middleware f meta opts)]
(fn [handler]
(apply mw handler args))))
(into-middleware [[f & args] meta opts]
(if-let [{:keys [wrap] :as mw} (into-middleware f meta opts)]
(assoc mw :wrap #(apply wrap % args))))
#?(:clj clojure.lang.Fn
:cljs function)
(expand-middleware [this _ _] this)
(into-middleware [this _ _]
(map->Middleware
{:wrap this}))
#?(:clj clojure.lang.PersistentArrayMap
:cljs cljs.core.PersistentArrayMap)
(expand-middleware [this meta opts]
(expand-middleware (create this) meta opts))
(into-middleware [this meta opts]
(into-middleware (create this) meta opts))
#?(:clj clojure.lang.PersistentHashMap
:cljs cljs.core.PersistentHashMap)
(expand-middleware [this meta opts]
(expand-middleware (create this) meta opts))
(into-middleware [this meta opts]
(into-middleware (create this) meta opts))
Middleware
(expand-middleware [{:keys [wrap gen]} meta opts]
(if gen
(into-middleware [{:keys [wrap gen] :as this} meta opts]
(if-not gen
this
(if-let [wrap (gen meta opts)]
(fn [handler & args]
(apply wrap handler args)))
(fn [handler & args]
(apply wrap handler args))))
(map->Middleware
(-> this
(dissoc :gen)
(assoc :wrap wrap))))))
nil
(expand-middleware [_ _ _]))
(into-middleware [_ _ _]))
(defn- ensure-handler! [path meta scope]
(when-not (:handler meta)
@ -61,23 +60,44 @@
(merge {:path path, :meta meta}
(if scope {:scope scope}))))))
(defn compose-middleware [middleware meta opts]
(defn expand [middleware meta opts]
(->> middleware
(keep identity)
(map #(expand-middleware % meta opts))
(keep identity)
(apply comp identity)))
(keep #(into-middleware % meta opts))
(into [])))
(defn compile-handler
(defn compile-handler [middleware handler]
((apply comp identity (keep :wrap middleware)) handler))
(compile-handler
[(map->Middleware
{:wrap
(fn [handler]
(fn [request]
(handler request)))})] identity)
(defn compile-result
([route opts]
(compile-handler route opts nil))
(compile-result route opts nil))
([[path {:keys [middleware handler] :as meta}] opts scope]
(ensure-handler! path meta scope)
((compose-middleware middleware meta opts) handler)))
(let [middleware (expand middleware meta opts)]
(map->Endpoint
{:handler (compile-handler middleware handler)
:middleware middleware
:meta meta}))))
(defn router
([data]
(router data nil))
([data opts]
(let [opts (meta-merge {:compile compile-handler} opts)]
(let [opts (meta-merge {:compile compile-result} opts)]
(reitit/router data opts))))
(defn middleware-handler [router]
(with-meta
(fn [path]
(some->> path
(reitit/match-by-path router)
:result
:handler))
{::router router}))

29
src/reitit/ring.cljc
View file

@ -6,7 +6,6 @@
(def http-methods #{:get :head :patch :delete :options :post :put})
(defrecord Methods [get head post put delete trace options connect patch any])
(defrecord Endpoint [meta handler])
(defn- group-keys [meta]
(reduce-kv
@ -28,7 +27,7 @@
(if handler
(handler
(cond-> (impl/fast-assoc request ::match match)
params (impl/fast-assoc :path-params params)))))))
(seq params) (impl/fast-assoc :path-params params)))))))
([request respond raise]
(if-let [match (reitit/match-by-path router (:uri request))]
(let [method (:request-method request :any)
@ -39,7 +38,7 @@
(if handler
(handler
(cond-> (impl/fast-assoc request ::match match)
params (impl/fast-assoc :path-params params))
(seq params) (impl/fast-assoc :path-params params))
respond raise))))))
{::router router}))
@ -56,30 +55,22 @@
(update acc method expand opts)
acc)) meta http-methods)])
(defn compile-handler [[path meta] opts]
(defn compile-result [[path meta] opts]
(let [[top childs] (group-keys meta)]
(if-not (seq childs)
(map->Methods
{:any (map->Endpoint
{:handler (middleware/compile-handler [path top] opts)
:meta top})})
(let [any-handler (if (:handler top) (middleware/compile-handler [path meta] opts))]
(let [middleware (middleware/compile-result [path top] opts)]
(map->Methods {:any (middleware/compile-result [path top] opts)}))
(let [any-handler (if (:handler top) (middleware/compile-result [path meta] opts))]
(reduce-kv
(fn [acc method meta]
(let [meta (meta-merge top meta)
handler (middleware/compile-handler [path meta] opts method)]
(assoc acc method (map->Endpoint
{:handler handler
:meta meta}))))
(map->Methods
{:any (map->Endpoint
{:handler (if (:handler top) (middleware/compile-handler [path meta] opts))
:meta top})})
(let [meta (meta-merge top meta)]
(assoc acc method (middleware/compile-result [path meta] opts method))))
(map->Methods {:any any-handler})
childs)))))
(defn router
([data]
(router data nil))
([data opts]
(let [opts (meta-merge {:coerce coerce-handler, :compile compile-handler} opts)]
(let [opts (meta-merge {:coerce coerce-handler, :compile compile-result} opts)]
(reitit/router data opts))))

3
src/reitit/spec.cljc
View file

@ -26,7 +26,8 @@
(s/def ::route
(s/cat :path ::path
:meta ::meta))
:meta ::meta
:result (s/? any?)))
(s/def ::routes
(s/or :route ::route

20
test/cljc/reitit/core_test.cljc
View file

@ -9,8 +9,8 @@
(testing "linear-router"
(let [router (reitit/router ["/api" ["/ipa" ["/:size" ::beer]]])]
(is (= :linear-router (reitit/router-type router)))
(is (= [["/api/ipa/:size" {:name ::beer}]]
(is (= :linear-router (reitit/router-name router)))
(is (= [["/api/ipa/:size" {:name ::beer} nil]]
(reitit/routes router)))
(is (= true (map? (reitit/options router))))
(is (= (reitit/map->Match
@ -27,6 +27,7 @@
(reitit/match-by-name router ::beer {:size "large"})))
(is (= nil (reitit/match-by-name router "ILLEGAL")))
(is (= [::beer] (reitit/route-names router)))
(testing "name-based routing with missing parameters"
(is (= (reitit/map->PartialMatch
{:template "/api/ipa/:size"
@ -42,8 +43,8 @@
(testing "lookup-router"
(let [router (reitit/router ["/api" ["/ipa" ["/large" ::beer]]])]
(is (= :lookup-router (reitit/router-type router)))
(is (= [["/api/ipa/large" {:name ::beer}]]
(is (= :lookup-router (reitit/router-name router)))
(is (= [["/api/ipa/large" {:name ::beer} nil]]
(reitit/routes router)))
(is (= true (map? (reitit/options router))))
(is (= (reitit/map->Match
@ -60,6 +61,7 @@
(reitit/match-by-name router ::beer {:size "large"})))
(is (= nil (reitit/match-by-name router "ILLEGAL")))
(is (= [::beer] (reitit/route-names router)))
(testing "can't be created with wildcard routes"
(is (thrown-with-msg?
ExceptionInfo
@ -69,6 +71,7 @@
["/api/:version/ping"] {})))))))
(testing "route coercion & compilation"
(testing "custom compile"
(let [compile-times (atom 0)
coerce (fn [[path meta] _]
@ -86,6 +89,7 @@
["/crap"]]]
{:coerce coerce
:compile compile})]
(testing "routes are coerced"
(is (= [["/api/ping" {:name ::ping
:path "/api/ping",
@ -93,13 +97,15 @@
["/api/pong" {:name ::pong
:path "/api/pong",
:roles #{:admin}}]]
(reitit/routes router))))
(map butlast (reitit/routes router)))))
(testing "route match contains compiled handler"
(is (= 2 @compile-times))
(let [{:keys [result]} (reitit/match-by-path router "/api/pong")]
(is result)
(is (= "/api/pong" (result)))
(is (= 2 @compile-times))))))
(testing "default compile"
(let [router (reitit/router ["/ping" (constantly "ok")])]
(let [{:keys [result]} (reitit/match-by-path router "/ping")]
@ -109,9 +115,9 @@
(testing "custom router"
(let [router (reitit/router ["/ping"] {:router (fn [_ _]
(reify Router
(reitit/router-type [_]
(reitit/router-name [_]
::custom)))})]
(is (= ::custom (reitit/router-type router)))))
(is (= ::custom (reitit/router-name router)))))
(testing "bide sample"
(let [routes [["/auth/login" :auth/login]

167
test/cljc/reitit/middleware_test.cljc
View file

@ -6,37 +6,10 @@
#?(:clj
(:import (clojure.lang ExceptionInfo))))
(defn mw [handler name]
(fn
([request]
(-> request
(update ::mw (fnil conj []) name)
(handler)
(update :body (fnil conj []) name)))
([request respond raise]
(handler
(update request ::mw (fnil conj []) name)
#(respond (update % :body (fnil conj []) name))
raise))))
(defn handler
([{:keys [::mw]}]
{:status 200 :body (conj mw :ok)})
([request respond raise]
(respond (handler request))))
(deftest expand-middleware-test
(testing "middleware records"
(testing ":name is mandatory"
(is (thrown-with-msg?
ExceptionInfo
#"Middleware must have :name defined"
(middleware/create
{:wrap identity
:gen (constantly identity)}))))
(testing ":wrap & :gen are exclusive"
(is (thrown-with-msg?
ExceptionInfo
@ -46,78 +19,93 @@
:wrap identity
:gen (constantly identity)}))))
(testing ":wrap"
(testing "middleware"
(let [calls (atom 0)
data {:name ::test
:wrap (fn [handler value]
wrap (fn [handler value]
(swap! calls inc)
(fn [request]
[value request]))}]
[value request]))
->app (fn [ast handler]
(middleware/compile-handler
(middleware/expand ast :meta {})
handler))]
(testing "as middleware function"
(reset! calls 0)
(let [app (->app [[#(wrap % :value)]] identity)]
(dotimes [_ 10]
(is (= [:value :request] (app :request)))
(is (= 1 @calls)))))
(testing "as middleware vector"
(reset! calls 0)
(let [app (->app [[wrap :value]] identity)]
(dotimes [_ 10]
(is (= [:value :request] (app :request)))
(is (= 1 @calls)))))
(testing "as map"
(reset! calls 0)
(let [app ((middleware/compose-middleware [data] :meta {}) identity :value)]
(let [app (->app [[{:wrap #(wrap % :value)}]] identity)]
(dotimes [_ 10]
(is (= [:value :request] (app :request)))
(is (= 1 @calls)))))
(testing "direct"
(testing "as map vector"
(reset! calls 0)
(let [app ((middleware/compose-middleware [(middleware/create data)] :meta {}) identity :value)]
(let [app (->app [[{:wrap wrap} :value]] identity)]
(dotimes [_ 10]
(is (= [:value :request] (app :request)))
(is (= 1 @calls)))))
(testing "vector"
(testing "as Middleware"
(reset! calls 0)
(let [app ((middleware/compose-middleware [[(middleware/create data) :value]] :meta {}) identity)]
(let [app (->app [[(middleware/create {:wrap #(wrap % :value)})]] identity)]
(dotimes [_ 10]
(is (= [:value :request] (app :request)))
(is (= 1 @calls)))))
(testing "as Middleware vector"
(reset! calls 0)
(let [app (->app [[(middleware/create {:wrap wrap}) :value]] identity)]
(dotimes [_ 10]
(is (= [:value :request] (app :request)))
(is (= 1 @calls)))))))
(testing ":gen"
(testing "compiled Middleware"
(let [calls (atom 0)
data {:name ::test
:gen (fn [meta _]
mw {:gen (fn [meta _]
(swap! calls inc)
(fn [handler value]
(swap! calls inc)
(fn [request]
[meta value request])))}]
[meta value request])))}
->app (fn [ast handler]
(middleware/compile-handler
(middleware/expand ast :meta {})
handler))]
(testing "as map"
(reset! calls 0)
(let [app ((middleware/compose-middleware [data] :meta {}) identity :value)]
(let [app (->app [[mw :value]] identity)]
(dotimes [_ 10]
(is (= [:meta :value :request] (app :request)))
(is (= 2 @calls)))))
(testing "direct"
(testing "as Middleware"
(reset! calls 0)
(let [app ((middleware/compose-middleware [(middleware/create data)] :meta {}) identity :value)]
(dotimes [_ 10]
(is (= [:meta :value :request] (app :request)))
(is (= 2 @calls)))))
(testing "vector"
(reset! calls 0)
(let [app ((middleware/compose-middleware [[(middleware/create data) :value]] :meta {}) identity)]
(is (= [:meta :value :request] (app :request)))
(let [app (->app [[(middleware/create mw) :value]] identity)]
(dotimes [_ 10]
(is (= [:meta :value :request] (app :request)))
(is (= 2 @calls)))))
(testing "nil unmounts the middleware"
(reset! calls 0)
(let [syntax [[(middleware/create
{:name ::test
:gen (fn [meta _])}) :value]]
app ((middleware/compose-middleware syntax :meta {}) identity)]
(is (= :request (app :request)))
(let [app (->app [{:gen (constantly nil)}
{:gen (constantly nil)}] identity)]
(dotimes [_ 10]
(is (= :request (app :request))))))))))
(deftest middleware-router-test
(deftest middleware-handler-test
(testing "all paths should have a handler"
(is (thrown-with-msg?
@ -125,40 +113,59 @@
#"path \"/ping\" doesn't have a :handler defined"
(middleware/router ["/ping"]))))
(testing "ring-handler"
(let [api-mw #(mw % :api)
(testing "middleware-handler"
(let [mw (fn [handler value]
(fn [request]
(conj (handler (conj request value)) value)))
api-mw #(mw % :api)
handler #(conj % :ok)
router (middleware/router
[["/ping" handler]
["/api" {:middleware [api-mw]}
["/ping" handler]
["/admin" {:middleware [[mw :admin]]}
["/ping" handler]]]])
app (fn
([{:keys [uri] :as request}]
(if-let [handler (:result (reitit/match-by-path router uri))]
(handler request)))
([{:keys [uri] :as request} respond raise]
(if-let [handler (:result (reitit/match-by-path router uri))]
(handler request respond raise))))]
->app (fn [router]
(let [h (middleware/middleware-handler router)]
(fn [path]
(if-let [f (h path)]
(f [])))))
app (->app router)]
(testing "not found"
(is (= nil (app {:uri "/favicon.ico"}))))
(is (= nil (app "/favicon.ico"))))
(testing "normal handler"
(is (= {:status 200, :body [:ok]}
(app {:uri "/ping"}))))
(is (= [:ok] (app "/ping"))))
(testing "with middleware"
(is (= {:status 200, :body [:api :ok :api]}
(app {:uri "/api/ping"}))))
(is (= [:api :ok :api] (app "/api/ping"))))
(testing "with nested middleware"
(is (= {:status 200, :body [:api :admin :ok :admin :api]}
(app {:uri "/api/admin/ping"}))))
(is (= [:api :admin :ok :admin :api] (app "/api/admin/ping"))))
(testing "3-arity"
(let [result (atom nil)
respond (partial reset! result), raise ::not-called]
(app {:uri "/api/admin/ping"} respond raise)
(is (= {:status 200, :body [:api :admin :ok :admin :api]}
@result)))))))
(testing ":gen middleware can be unmounted at creation-time"
(let [mw1 {:name ::mw1, :gen (constantly #(mw % ::mw1))}
mw2 {:name ::mw2, :gen (constantly nil)}
mw3 {:name ::mw3, :wrap #(mw % ::mw3)}
router (middleware/router
["/api" {:name ::api
:middleware [mw1 mw2 mw3 mw2]
:handler handler}])
app (->app router)]
(is (= [::mw1 ::mw3 :ok ::mw3 ::mw1] (app "/api")))
(testing "routes contain list of actually applied mw"
(is (= [::mw1 ::mw3] (->> (reitit/routes router)
first
last
:middleware
(map :name)))))
(testing "match contains list of actually applied mw"
(is (= [::mw1 ::mw3] (->> "/api"
(reitit/match-by-path router)
:result
:middleware
(map :name))))))))))

7
test/cljc/reitit/spec_test.cljc
View file

@ -1,13 +1,13 @@
(ns reitit.spec-test
(:require [clojure.test :refer [deftest testing is are]]
[clojure.spec.test.alpha :as stest]
[#?(:clj clojure.spec.test.alpha :cljs cljs.spec.test.alpha) :as stest]
[clojure.spec.alpha :as s]
[reitit.core :as reitit]
[reitit.spec :as spec])
#?(:clj
(:import (clojure.lang ExceptionInfo))))
(stest/instrument `reitit/router)
(stest/instrument `reitit/router `reitit/routes)
(deftest router-spec-test
@ -44,6 +44,9 @@
["/api" []
["/ipa"]])))
(testing "routes conform to spec (can't spec protocol functions)"
(is (= true (s/valid? ::spec/routes (reitit/routes (reitit/router ["/ping"]))))))
(testing "options"
(are [opts]

12
test/cljs/reitit/doo_runner.cljs
View file

@ -1,9 +1,15 @@
(ns reitit.doo-runner
(:require [doo.runner :refer-macros [doo-tests]]
reitit.coercion-test
reitit.core-test
reitit.ring-test))
reitit.middleware-test
reitit.ring-test
#_reitit.spec-test))
(enable-console-print!)
(doo-tests 'reitit.core-test
'reitit.ring-test)
(doo-tests 'reitit.coercion-test
'reitit.core-test
'reitit.middleware-test
'reitit.ring-test
#_'reitit.spec-test)