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add basic authentication support

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Gered 2014-08-29 09:50:36 -04:00
parent 5ea1673530
commit 35cc2eda99
2 changed files with 44 additions and 15 deletions
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32
src/clj_hl7_fhir/core.clj
View file

@ -6,6 +6,27 @@
(:use [camel-snake-kebab]
[clj-hl7-fhir.util]))
; HACK: using this dynamic/"with"-wrapping type of API design is arguably a "lazy" design.
; in the future I intend to explore reworking the API so as to not require this if
; authentication support is needed, but I didn't want to get too held up on it right
; now. the problem at the moment is that passing authentication info to the main
; FHIR operation functions is that it only works well in the simple cases. usage
; of functions like fetch-next-page, fetch-all and get-relative-resource becomes
; a little bit messy (have to pass in server/auth info where before none of it
; was necessary... kind of gross in my opinion, would rather come up with
; something cleaner if at all possible)
(def ^:dynamic *server-auth* nil)
(defmacro with-auth
"wraps code that performs FHIR operations such that each will have authentication info
added to the HTTP requests made. auth should be a map containing one entry where the
key is one of :basic-auth, :digest-auth or :oauth-token (authentication headers that
clj-http supports)"
[auth & body]
`(binding [*server-auth* (select-keys ~auth [:basic-auth :digest-auth :oauth-token])]
~@body))
(defn- ->fhir-resource-name [x]
(name (->CamelCase x)))
@ -15,16 +36,17 @@
(defn- fhir-request [type base-url resource-url & {:keys [params body params-as-body? follow-location?]}]
(let [query (map->query-string params)
auth *server-auth*
url (build-url base-url resource-url (if-not params-as-body? query))
body (if params-as-body? query body)
follow-location? (if (nil? follow-location?) true follow-location?)]
(try
(let [response (case type
:get (http-get-json url)
:form-post (http-post-form url body)
:post (http-post-json url body)
:put (http-put-json url body)
:delete (http-delete-json url body))
:get (http-get-json url auth)
:form-post (http-post-form url auth body)
:post (http-post-json url auth body)
:put (http-put-json url auth body)
:delete (http-delete-json url auth body))
response-body (:body response)
location (get-in response [:headers "Location"])]
(if location

27
src/clj_hl7_fhir/util.clj
View file

@ -66,35 +66,42 @@
(defn- http-request [f url & [params]]
(f url (merge {:accept "application/json+fhir"} params)))
(defn http-get-json [url]
(http-request http/get url))
(defn http-get-json [url params]
(http-request http/get url params))
(defn http-post-json [url body]
(defn http-post-json [url params body]
(http-request
http/post url
(merge
{:content-type "application/json+fhir"}
(cond
(map? body) {:body (json/generate-string body)}
(string? body) {:body body}))))
(string? body) {:body body})
params)))
(defn http-post-form [url body]
(defn http-post-form [url params body]
(http-request
http/post url
(merge
{:content-type "application/x-www-form-urlencoded"}
(cond
(map? body) {:body (json/generate-string body)}
(string? body) {:body body}))))
(string? body) {:body body})
params)))
(defn http-put-json [url body]
(defn http-put-json [url params body]
(http-request
http/put url
(merge
{:content-type "application/json+fhir"}
(cond
(map? body) {:body (json/generate-string body)}
(string? body) {:body body}))))
(string? body) {:body body})
params)))
(defn http-delete-json [url body]
(http-request http/delete url (if body {:body body})))
(defn http-delete-json [url params body]
(http-request
http/delete url
(merge
(if body {:body body})
params)))