Create RedisService + create test

.dart_tool/pub/bin/sdk-version

@@ -0,0 +1 @@
+2.0.0

lib/angel_redis.dart

@@ -0,0 +1 @@
+export 'src/redis_service.dart';

lib/src/redis_service.dart

@@ -0,0 +1,46 @@
+import 'dart:async';
+import 'dart:convert';
+import 'package:angel_framework/angel_framework.dart';
+import 'package:resp_client/resp_commands.dart';
+
+class RedisService extends Service<String, Map<String, dynamic>> {
+  final RespCommands respCommands;
+
+  /// An optional string prefixed to keys before they are inserted into Redis.
+  ///
+  /// Consider using this if you are using several different Redis collections
+  /// within a single application.
+  final String prefix;
+
+  RedisService(this.respCommands, {this.prefix});
+
+  String _applyPrefix(String id) => prefix == null ? id : '$prefix:$id';
+
+  @override
+  Future<Map<String, dynamic>> read(String id,
+      [Map<String, dynamic> params]) async {
+    var value = await respCommands.get(_applyPrefix(id));
+
+    if (value == null) {
+      throw new AngelHttpException.notFound(
+          message: 'No record found for ID $id');
+    } else {
+      return json.decode(value);
+    }
+  }
+
+  @override
+  Future<Map<String, dynamic>> update(String id, Map<String, dynamic> data,
+      [Map<String, dynamic> params]) async {
+    data = new Map<String, dynamic>.from(data)..['id'] = id;
+    await respCommands.set(_applyPrefix(id), json.encode(data));
+    return data;
+  }
+
+  @override
+  Future<Map<String, dynamic>> remove(String id,
+      [Map<String, dynamic> params]) async {
+    var client = respCommands.client;
+    throw await client.writeArrayOfBulk(['MULTI']);
+  }
+}

pubspec.yaml

@@ -2,3 +2,5 @@ name: angel_redis
 dependencies:
   angel_framework: ^2.0.0-alpha
   resp_client: ^0.1.6
+dev_dependencies:
+  test: ^1.0.0

test/all_test.dart

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+import 'package:angel_redis/angel_redis.dart';
+import 'package:resp_client/resp_client.dart';
+import 'package:resp_client/resp_commands.dart';
+import 'package:test/test.dart';
+
+main() async {
+  RespServerConnection connection;
+  RedisService service;
+
+  setUp(() async {
+    connection = await connectSocket('localhost');
+    service = new RedisService(new RespCommands(new RespClient(connection)),
+        prefix: 'angel_redis_test');
+  });
+
+  tearDown(() => connection.close());
+
+  test('create with id', () async {
+    var input = {'id': 'foo', 'bar': 'baz'};
+    var output = await service.create(input);
+    expect(input, output);
+  });
+}