THRIFT-1227 - erlang implementation of thrift json protocol

git-svn-id: https://svn.apache.org/repos/asf/thrift/trunk@1172199 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 89 insertions, 0 deletions

diff --git a/tutorial/erl/json_client.erl b/tutorial/erl/json_client.erl
new file mode 100644
index 000000000..524e9aea7
--- /dev/null
+++ b/tutorial/erl/json_client.erl
@@ -0,0 +1,89 @@
+%%
+%% Licensed to the Apache Software Foundation (ASF) under one
+%% or more contributor license agreements. See the NOTICE file
+%% distributed with this work for additional information
+%% regarding copyright ownership. The ASF licenses this file
+%% to you under the Apache License, Version 2.0 (the
+%% "License"); you may not use this file except in compliance
+%% with the License. You may obtain a copy of the License at
+%%
+%%   http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing,
+%% software distributed under the License is distributed on an
+%% "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+%% KIND, either express or implied. See the License for the
+%% specific language governing permissions and limitations
+%% under the License.
+%%
+%% The JSON protocol over HTTP implementation was created by
+%% Peter Neumark <neumark.peter@gmail.com> based on
+%% the binary protocol + socket tutorial. Use with the same server
+%% that the Javascript tutorial uses!
+
+-module(json_client).
+
+-include("calculator_thrift.hrl").
+
+-export([t/0]).
+
+%% Client constructor for the common-case of socket transports
+%% with the binary protocol
+new_client(Host, Path, Service, _Options) ->
+    {ProtoOpts, TransOpts} = {[],[]},
+    TransportFactory = fun() -> thrift_http_transport:new(Host, Path, TransOpts) end,
+    {ok, ProtocolFactory} = thrift_json_protocol:new_protocol_factory(
+                              TransportFactory, ProtoOpts),
+    {ok, Protocol} = ProtocolFactory(),
+    thrift_client:new(Protocol, Service).
+
+p(X) ->
+    io:format("~p~n", [X]),
+    ok.
+
+t() ->
+    inets:start(),
+    {ok, Client0} = new_client("127.0.0.1:8088", "/thrift/service/tutorial/",
+                                           calculator_thrift,
+                                           []),
+    {Client1, {ok, ok}} = thrift_client:call(Client0, ping, []),
+    io:format("ping~n", []),
+
+    {Client2, {ok, Sum}} = thrift_client:call(Client1, add,  [1, 1]),
+    io:format("1+1=~p~n", [Sum]),
+
+    {Client3, {ok, Sum1}} = thrift_client:call(Client2, add, [1, 4]),
+    io:format("1+4=~p~n", [Sum1]),
+
+    Work = #work{op=?tutorial_Operation_SUBTRACT,
+                 num1=15,
+                 num2=10},
+    {Client4, {ok, Diff}} = thrift_client:call(Client3, calculate, [1, Work]),
+    io:format("15-10=~p~n", [Diff]),
+
+    {Client5, {ok, Log}} = thrift_client:call(Client4, getStruct, [1]),
+    io:format("Log: ~p~n", [Log]),
+
+    Client6 =
+        try
+            Work1 = #work{op=?tutorial_Operation_DIVIDE,
+                          num1=1,
+                          num2=0},
+            {ClientS1, {ok, _Quot}} = thrift_client:call(Client5, calculate, [2, Work1]),
+
+            io:format("LAME: exception handling is broken~n", []),
+            ClientS1
+        catch
+            throw:{ClientS2, Z} ->
+                io:format("Got exception where expecting - the " ++
+                          "following is NOT a problem!!!~n"),
+                p(Z),
+                ClientS2
+        end,
+
+
+    {Client7, {ok, ok}} = thrift_client:call(Client6, zip, []),
+    io:format("zip~n", []),
+
+    {_Client8, ok} = thrift_client:close(Client7),
+    ok.