From efdfd2413bab91fffe2c52154c832f77198093a3 Mon Sep 17 00:00:00 2001
From: Magnus Ahltorp <map@kth.se>
Date: Mon, 2 Mar 2015 11:40:17 +0100
Subject: Add http request function to http_util

---
 src/http_util.erl | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++
 src/plop.erl      | 48 ++++--------------------------------------------
 2 files changed, 54 insertions(+), 44 deletions(-)
 create mode 100644 src/http_util.erl

(limited to 'src')

diff --git a/src/http_util.erl b/src/http_util.erl
new file mode 100644
index 0000000..53dd2bb
--- /dev/null
+++ b/src/http_util.erl
@@ -0,0 +1,50 @@
+%%% Copyright (c) 2014, NORDUnet A/S.
+%%% See LICENSE for licensing information.
+%%%
+
+-module(http_util).
+-export([request/4]).
+-include_lib("hackney/include/hackney_lib.hrl").
+
+get_auth_header(Headers) ->
+    case hackney_headers:get_value("X-Catlfish-Auth", Headers) of
+        undefined ->
+            undefined;
+        Result when is_binary(Result) ->
+            lager:debug("received auth header: ~p", [Result]),
+            binary_to_list(Result)
+    end.
+
+add_auth(Method, Path, Headers, Data) ->
+    AuthHeader = http_auth:create_auth(Method, Path, Data),
+    lager:debug("sent auth header: ~p", [AuthHeader]),
+    [{"X-Catlfish-Auth", AuthHeader} | Headers].
+
+request(DebugTag, URL, Headers, RequestBody) ->
+    Starttime = os:timestamp(),
+    ParsedURL = hackney_url:parse_url(URL),
+    CACertFile = application:get_env(catlfish, https_cacertfile, none),
+    #hackney_url{path = Path} = ParsedURL,
+    lager:debug("~s: sending http request to ~p",
+                [DebugTag, URL]),
+    {ok, ConnRef} = hackney:connect(ParsedURL, [{ssl_options, [{cacertfile, CACertFile}]}]),
+    lager:debug("~s: connected to ~p",
+                [DebugTag, URL]),
+    {ok, StatusCode, RespHeaders, ClientRef} =
+        hackney:send_request(ConnRef,
+                             {post, Path,
+                              add_auth("POST", Path, Headers,
+                                       RequestBody),
+                              RequestBody}),
+    lager:debug("~s: received headers for ~p: ~p",
+                [DebugTag, URL, RespHeaders]),
+    {ok, Body} = hackney:body(ClientRef),
+    Stoptime = os:timestamp(),
+    hackney:close(ClientRef),
+    lager:debug("~s: received body for ~p: time ~p",
+                [DebugTag, URL, timer:now_diff(Stoptime, Starttime)]),
+    StatusLine = {none, StatusCode, none},
+    AuthHeader = get_auth_header(hackney_headers:new(RespHeaders)),
+    {http_auth:verify_auth(AuthHeader, "REPLY",
+                           binary_to_list(Path), Body),
+     StatusLine, RespHeaders, Body}.
diff --git a/src/plop.erl b/src/plop.erl
index 6ff65f8..0b95faa 100644
--- a/src/plop.erl
+++ b/src/plop.erl
@@ -39,7 +39,6 @@
 %%-include("db.hrl").
 -include_lib("public_key/include/public_key.hrl").
 -include_lib("eunit/include/eunit.hrl").
--include_lib("hackney/include/hackney_lib.hrl").
 
 %%%%% moved from plop.hrl, maybe remove
 -define(PLOPVERSION, 0).
@@ -194,58 +193,19 @@ storage_nodes_quorum() ->
     {ok, Value} = application:get_env(plop, storage_nodes_quorum),
     Value.
 
-add_auth(Method, Path, Headers, Data) ->
-    AuthHeader = http_auth:create_auth(Method, Path, Data),
-    lager:debug("sent auth header: ~p", [AuthHeader]),
-    [{"X-Catlfish-Auth", AuthHeader} | Headers].
-
-get_auth_header(Headers) ->
-    case hackney_headers:get_value("X-Catlfish-Auth", Headers) of
-        undefined ->
-            undefined;
-        Result when is_binary(Result) ->
-            lager:debug("received auth header: ~p", [Result]),
-            binary_to_list(Result)
-    end.
-
 send_http_request(TreeLeafHash, URL, Headers, RequestBody) ->
     ParentPid = self(),
     RequestId = make_ref(),
-    CACertFile = application:get_env(catlfish, https_cacertfile, none),
     spawn(fun () ->
-                  Starttime = os:timestamp(),
-                  ParsedURL = hackney_url:parse_url(URL),
-                  #hackney_url{path = Path} = ParsedURL,
-                  lager:debug("leafhash ~s: sending http request to ~p",
-                              [mochihex:to_hex(TreeLeafHash), URL]),
-                  {ok, ConnRef} = hackney:connect(ParsedURL, [{ssl_options, [{cacertfile, CACertFile}]}]),
-                  lager:debug("leafhash ~s: connected to ~p",
-                              [mochihex:to_hex(TreeLeafHash), URL]),
-                  {ok, StatusCode, RespHeaders, ClientRef} =
-                      hackney:send_request(ConnRef,
-                                           {post, Path,
-                                            add_auth("POST", Path, Headers,
-                                                     RequestBody),
-                                            RequestBody}),
-                  lager:debug("leafhash ~s: received headers for ~p: ~p",
-                              [mochihex:to_hex(TreeLeafHash), URL, RespHeaders]),
-                  {ok, Body} = hackney:body(ClientRef),
-                  Stoptime = os:timestamp(),
-                  hackney:close(ClientRef),
-                  lager:debug("leafhash ~s: received body for ~p: time ~p",
-                              [mochihex:to_hex(TreeLeafHash), URL, timer:now_diff(Stoptime, Starttime)]),
-                  StatusLine = {none, StatusCode, none},
-                  AuthHeader = get_auth_header(hackney_headers:new(RespHeaders)),
-                  case http_auth:verify_auth(AuthHeader, "REPLY",
-                                             binary_to_list(Path), Body) of
-                      failure ->
+                  case http_util:request("leafhash " ++ mochihex:to_hex(TreeLeafHash), URL, Headers, RequestBody) of
+                      {failure, StatusLine, RespHeaders, Body}  ->
                           lager:debug("auth check failed"),
                           drop;
-                      success ->
+                      {success, StatusLine, RespHeaders, Body} ->
                           lager:debug("auth check succeeded"),
                           ParentPid ! {http, {RequestId,
                                               {StatusLine, RespHeaders, Body}}};
-                      noauth ->
+                      {noauth, StatusLine, RespHeaders, Body} ->
                           lager:debug("no auth"),
                           ParentPid ! {http, {RequestId,
                                               {StatusLine, RespHeaders, Body}}}
-- 
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